| 1 | /* libFLAC - Free Lossless Audio Codec library |
| 2 | * Copyright (C) 2000-2009 Josh Coalson |
| 3 | * Copyright (C) 2011-2016 Xiph.Org Foundation |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * |
| 12 | * - Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * - Neither the name of the Xiph.org Foundation nor the names of its |
| 17 | * contributors may be used to endorse or promote products derived from |
| 18 | * this software without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 23 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
| 24 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 26 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 27 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 28 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 29 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 30 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | #ifdef HAVE_CONFIG_H |
| 34 | # include <config.h> |
| 35 | #endif |
| 36 | |
| 37 | #include <limits.h> |
| 38 | #include <stdio.h> |
| 39 | #include <stdlib.h> /* for malloc() */ |
| 40 | #include <string.h> /* for memcpy() */ |
| 41 | #include <sys/types.h> /* for off_t */ |
| 42 | #ifdef _WIN32 |
| 43 | #include <windows.h> /* for GetFileType() */ |
| 44 | #include <io.h> /* for _get_osfhandle() */ |
| 45 | #endif |
| 46 | #include "share/compat.h" |
| 47 | #include "FLAC/assert.h" |
| 48 | #include "FLAC/stream_decoder.h" |
| 49 | #include "protected/stream_encoder.h" |
| 50 | #include "private/bitwriter.h" |
| 51 | #include "private/bitmath.h" |
| 52 | #include "private/crc.h" |
| 53 | #include "private/cpu.h" |
| 54 | #include "private/fixed.h" |
| 55 | #include "private/format.h" |
| 56 | #include "private/lpc.h" |
| 57 | #include "private/md5.h" |
| 58 | #include "private/memory.h" |
| 59 | #include "private/macros.h" |
| 60 | #if FLAC__HAS_OGG |
| 61 | #include "private/ogg_helper.h" |
| 62 | #include "private/ogg_mapping.h" |
| 63 | #endif |
| 64 | #include "private/stream_encoder.h" |
| 65 | #include "private/stream_encoder_framing.h" |
| 66 | #include "private/window.h" |
| 67 | #include "share/alloc.h" |
| 68 | #include "share/private.h" |
| 69 | |
| 70 | |
| 71 | /* Exact Rice codeword length calculation is off by default. The simple |
| 72 | * (and fast) estimation (of how many bits a residual value will be |
| 73 | * encoded with) in this encoder is very good, almost always yielding |
| 74 | * compression within 0.1% of exact calculation. |
| 75 | */ |
| 76 | #undef EXACT_RICE_BITS_CALCULATION |
| 77 | /* Rice parameter searching is off by default. The simple (and fast) |
| 78 | * parameter estimation in this encoder is very good, almost always |
| 79 | * yielding compression within 0.1% of the optimal parameters. |
| 80 | */ |
| 81 | #undef ENABLE_RICE_PARAMETER_SEARCH |
| 82 | |
| 83 | |
| 84 | typedef struct { |
| 85 | FLAC__int32 *data[FLAC__MAX_CHANNELS]; |
| 86 | unsigned size; /* of each data[] in samples */ |
| 87 | unsigned tail; |
| 88 | } verify_input_fifo; |
| 89 | |
| 90 | typedef struct { |
| 91 | const FLAC__byte *data; |
| 92 | unsigned capacity; |
| 93 | unsigned bytes; |
| 94 | } verify_output; |
| 95 | |
| 96 | typedef enum { |
| 97 | ENCODER_IN_MAGIC = 0, |
| 98 | ENCODER_IN_METADATA = 1, |
| 99 | ENCODER_IN_AUDIO = 2 |
| 100 | } EncoderStateHint; |
| 101 | |
| 102 | static struct CompressionLevels { |
| 103 | FLAC__bool do_mid_side_stereo; |
| 104 | FLAC__bool loose_mid_side_stereo; |
| 105 | unsigned max_lpc_order; |
| 106 | unsigned qlp_coeff_precision; |
| 107 | FLAC__bool do_qlp_coeff_prec_search; |
| 108 | FLAC__bool do_escape_coding; |
| 109 | FLAC__bool do_exhaustive_model_search; |
| 110 | unsigned min_residual_partition_order; |
| 111 | unsigned max_residual_partition_order; |
| 112 | unsigned rice_parameter_search_dist; |
| 113 | const char *apodization; |
| 114 | } compression_levels_[] = { |
| 115 | { false, false, 0, 0, false, false, false, 0, 3, 0, "tukey(5e-1)" }, |
| 116 | { true , true , 0, 0, false, false, false, 0, 3, 0, "tukey(5e-1)" }, |
| 117 | { true , false, 0, 0, false, false, false, 0, 3, 0, "tukey(5e-1)" }, |
| 118 | { false, false, 6, 0, false, false, false, 0, 4, 0, "tukey(5e-1)" }, |
| 119 | { true , true , 8, 0, false, false, false, 0, 4, 0, "tukey(5e-1)" }, |
| 120 | { true , false, 8, 0, false, false, false, 0, 5, 0, "tukey(5e-1)" }, |
| 121 | { true , false, 8, 0, false, false, false, 0, 6, 0, "tukey(5e-1);partial_tukey(2)" }, |
| 122 | { true , false, 12, 0, false, false, false, 0, 6, 0, "tukey(5e-1);partial_tukey(2)" }, |
| 123 | { true , false, 12, 0, false, false, false, 0, 6, 0, "tukey(5e-1);partial_tukey(2);punchout_tukey(3)" } |
| 124 | /* here we use locale-independent 5e-1 instead of 0.5 or 0,5 */ |
| 125 | }; |
| 126 | |
| 127 | |
| 128 | /*********************************************************************** |
| 129 | * |
| 130 | * Private class method prototypes |
| 131 | * |
| 132 | ***********************************************************************/ |
| 133 | |
| 134 | static void set_defaults_(FLAC__StreamEncoder *encoder); |
| 135 | static void free_(FLAC__StreamEncoder *encoder); |
| 136 | static FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize); |
| 137 | static FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block); |
| 138 | static FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block); |
| 139 | static void update_metadata_(const FLAC__StreamEncoder *encoder); |
| 140 | #if FLAC__HAS_OGG |
| 141 | static void update_ogg_metadata_(FLAC__StreamEncoder *encoder); |
| 142 | #endif |
| 143 | static FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block); |
| 144 | static FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block); |
| 145 | |
| 146 | static FLAC__bool process_subframe_( |
| 147 | FLAC__StreamEncoder *encoder, |
| 148 | unsigned min_partition_order, |
| 149 | unsigned max_partition_order, |
| 150 | const FLAC__FrameHeader *frame_header, |
| 151 | unsigned subframe_bps, |
| 152 | const FLAC__int32 integer_signal[], |
| 153 | FLAC__Subframe *subframe[2], |
| 154 | FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2], |
| 155 | FLAC__int32 *residual[2], |
| 156 | unsigned *best_subframe, |
| 157 | unsigned *best_bits |
| 158 | ); |
| 159 | |
| 160 | static FLAC__bool add_subframe_( |
| 161 | FLAC__StreamEncoder *encoder, |
| 162 | unsigned blocksize, |
| 163 | unsigned subframe_bps, |
| 164 | const FLAC__Subframe *subframe, |
| 165 | FLAC__BitWriter *frame |
| 166 | ); |
| 167 | |
| 168 | static unsigned evaluate_constant_subframe_( |
| 169 | FLAC__StreamEncoder *encoder, |
| 170 | const FLAC__int32 signal, |
| 171 | unsigned blocksize, |
| 172 | unsigned subframe_bps, |
| 173 | FLAC__Subframe *subframe |
| 174 | ); |
| 175 | |
| 176 | static unsigned evaluate_fixed_subframe_( |
| 177 | FLAC__StreamEncoder *encoder, |
| 178 | const FLAC__int32 signal[], |
| 179 | FLAC__int32 residual[], |
| 180 | FLAC__uint64 abs_residual_partition_sums[], |
| 181 | unsigned raw_bits_per_partition[], |
| 182 | unsigned blocksize, |
| 183 | unsigned subframe_bps, |
| 184 | unsigned order, |
| 185 | unsigned rice_parameter, |
| 186 | unsigned rice_parameter_limit, |
| 187 | unsigned min_partition_order, |
| 188 | unsigned max_partition_order, |
| 189 | FLAC__bool do_escape_coding, |
| 190 | unsigned rice_parameter_search_dist, |
| 191 | FLAC__Subframe *subframe, |
| 192 | FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents |
| 193 | ); |
| 194 | |
| 195 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 196 | static unsigned evaluate_lpc_subframe_( |
| 197 | FLAC__StreamEncoder *encoder, |
| 198 | const FLAC__int32 signal[], |
| 199 | FLAC__int32 residual[], |
| 200 | FLAC__uint64 abs_residual_partition_sums[], |
| 201 | unsigned raw_bits_per_partition[], |
| 202 | const FLAC__real lp_coeff[], |
| 203 | unsigned blocksize, |
| 204 | unsigned subframe_bps, |
| 205 | unsigned order, |
| 206 | unsigned qlp_coeff_precision, |
| 207 | unsigned rice_parameter, |
| 208 | unsigned rice_parameter_limit, |
| 209 | unsigned min_partition_order, |
| 210 | unsigned max_partition_order, |
| 211 | FLAC__bool do_escape_coding, |
| 212 | unsigned rice_parameter_search_dist, |
| 213 | FLAC__Subframe *subframe, |
| 214 | FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents |
| 215 | ); |
| 216 | #endif |
| 217 | |
| 218 | static unsigned evaluate_verbatim_subframe_( |
| 219 | FLAC__StreamEncoder *encoder, |
| 220 | const FLAC__int32 signal[], |
| 221 | unsigned blocksize, |
| 222 | unsigned subframe_bps, |
| 223 | FLAC__Subframe *subframe |
| 224 | ); |
| 225 | |
| 226 | static unsigned find_best_partition_order_( |
| 227 | struct FLAC__StreamEncoderPrivate *private_, |
| 228 | const FLAC__int32 residual[], |
| 229 | FLAC__uint64 abs_residual_partition_sums[], |
| 230 | unsigned raw_bits_per_partition[], |
| 231 | unsigned residual_samples, |
| 232 | unsigned predictor_order, |
| 233 | unsigned rice_parameter, |
| 234 | unsigned rice_parameter_limit, |
| 235 | unsigned min_partition_order, |
| 236 | unsigned max_partition_order, |
| 237 | unsigned bps, |
| 238 | FLAC__bool do_escape_coding, |
| 239 | unsigned rice_parameter_search_dist, |
| 240 | FLAC__EntropyCodingMethod *best_ecm |
| 241 | ); |
| 242 | |
| 243 | static void precompute_partition_info_sums_( |
| 244 | const FLAC__int32 residual[], |
| 245 | FLAC__uint64 abs_residual_partition_sums[], |
| 246 | unsigned residual_samples, |
| 247 | unsigned predictor_order, |
| 248 | unsigned min_partition_order, |
| 249 | unsigned max_partition_order, |
| 250 | unsigned bps |
| 251 | ); |
| 252 | |
| 253 | static void precompute_partition_info_escapes_( |
| 254 | const FLAC__int32 residual[], |
| 255 | unsigned raw_bits_per_partition[], |
| 256 | unsigned residual_samples, |
| 257 | unsigned predictor_order, |
| 258 | unsigned min_partition_order, |
| 259 | unsigned max_partition_order |
| 260 | ); |
| 261 | |
| 262 | static FLAC__bool set_partitioned_rice_( |
| 263 | #ifdef EXACT_RICE_BITS_CALCULATION |
| 264 | const FLAC__int32 residual[], |
| 265 | #endif |
| 266 | const FLAC__uint64 abs_residual_partition_sums[], |
| 267 | const unsigned raw_bits_per_partition[], |
| 268 | const unsigned residual_samples, |
| 269 | const unsigned predictor_order, |
| 270 | const unsigned suggested_rice_parameter, |
| 271 | const unsigned rice_parameter_limit, |
| 272 | const unsigned rice_parameter_search_dist, |
| 273 | const unsigned partition_order, |
| 274 | const FLAC__bool search_for_escapes, |
| 275 | FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents, |
| 276 | unsigned *bits |
| 277 | ); |
| 278 | |
| 279 | static unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples); |
| 280 | |
| 281 | /* verify-related routines: */ |
| 282 | static void append_to_verify_fifo_( |
| 283 | verify_input_fifo *fifo, |
| 284 | const FLAC__int32 * const input[], |
| 285 | unsigned input_offset, |
| 286 | unsigned channels, |
| 287 | unsigned wide_samples |
| 288 | ); |
| 289 | |
| 290 | static void append_to_verify_fifo_interleaved_( |
| 291 | verify_input_fifo *fifo, |
| 292 | const FLAC__int32 input[], |
| 293 | unsigned input_offset, |
| 294 | unsigned channels, |
| 295 | unsigned wide_samples |
| 296 | ); |
| 297 | |
| 298 | static FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data); |
| 299 | static FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data); |
| 300 | static void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data); |
| 301 | static void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data); |
| 302 | |
| 303 | static FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data); |
| 304 | static FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data); |
| 305 | static FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data); |
| 306 | static FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data); |
| 307 | static FILE *get_binary_stdout_(void); |
| 308 | |
| 309 | |
| 310 | /*********************************************************************** |
| 311 | * |
| 312 | * Private class data |
| 313 | * |
| 314 | ***********************************************************************/ |
| 315 | |
| 316 | typedef struct FLAC__StreamEncoderPrivate { |
| 317 | unsigned input_capacity; /* current size (in samples) of the signal and residual buffers */ |
| 318 | FLAC__int32 *integer_signal[FLAC__MAX_CHANNELS]; /* the integer version of the input signal */ |
| 319 | FLAC__int32 *integer_signal_mid_side[2]; /* the integer version of the mid-side input signal (stereo only) */ |
| 320 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 321 | FLAC__real *real_signal[FLAC__MAX_CHANNELS]; /* (@@@ currently unused) the floating-point version of the input signal */ |
| 322 | FLAC__real *real_signal_mid_side[2]; /* (@@@ currently unused) the floating-point version of the mid-side input signal (stereo only) */ |
| 323 | FLAC__real *window[FLAC__MAX_APODIZATION_FUNCTIONS]; /* the pre-computed floating-point window for each apodization function */ |
| 324 | FLAC__real *windowed_signal; /* the integer_signal[] * current window[] */ |
| 325 | #endif |
| 326 | unsigned subframe_bps[FLAC__MAX_CHANNELS]; /* the effective bits per sample of the input signal (stream bps - wasted bits) */ |
| 327 | unsigned subframe_bps_mid_side[2]; /* the effective bits per sample of the mid-side input signal (stream bps - wasted bits + 0/1) */ |
| 328 | FLAC__int32 *residual_workspace[FLAC__MAX_CHANNELS][2]; /* each channel has a candidate and best workspace where the subframe residual signals will be stored */ |
| 329 | FLAC__int32 *residual_workspace_mid_side[2][2]; |
| 330 | FLAC__Subframe subframe_workspace[FLAC__MAX_CHANNELS][2]; |
| 331 | FLAC__Subframe subframe_workspace_mid_side[2][2]; |
| 332 | FLAC__Subframe *subframe_workspace_ptr[FLAC__MAX_CHANNELS][2]; |
| 333 | FLAC__Subframe *subframe_workspace_ptr_mid_side[2][2]; |
| 334 | FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace[FLAC__MAX_CHANNELS][2]; |
| 335 | FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_workspace_mid_side[FLAC__MAX_CHANNELS][2]; |
| 336 | FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr[FLAC__MAX_CHANNELS][2]; |
| 337 | FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents_workspace_ptr_mid_side[FLAC__MAX_CHANNELS][2]; |
| 338 | unsigned best_subframe[FLAC__MAX_CHANNELS]; /* index (0 or 1) into 2nd dimension of the above workspaces */ |
| 339 | unsigned best_subframe_mid_side[2]; |
| 340 | unsigned best_subframe_bits[FLAC__MAX_CHANNELS]; /* size in bits of the best subframe for each channel */ |
| 341 | unsigned best_subframe_bits_mid_side[2]; |
| 342 | FLAC__uint64 *abs_residual_partition_sums; /* workspace where the sum of abs(candidate residual) for each partition is stored */ |
| 343 | unsigned *raw_bits_per_partition; /* workspace where the sum of silog2(candidate residual) for each partition is stored */ |
| 344 | FLAC__BitWriter *frame; /* the current frame being worked on */ |
| 345 | unsigned loose_mid_side_stereo_frames; /* rounded number of frames the encoder will use before trying both independent and mid/side frames again */ |
| 346 | unsigned loose_mid_side_stereo_frame_count; /* number of frames using the current channel assignment */ |
| 347 | FLAC__ChannelAssignment last_channel_assignment; |
| 348 | FLAC__StreamMetadata streaminfo; /* scratchpad for STREAMINFO as it is built */ |
| 349 | FLAC__StreamMetadata_SeekTable *seek_table; /* pointer into encoder->protected_->metadata_ where the seek table is */ |
| 350 | unsigned current_sample_number; |
| 351 | unsigned current_frame_number; |
| 352 | FLAC__MD5Context md5context; |
| 353 | FLAC__CPUInfo cpuinfo; |
| 354 | void (*local_precompute_partition_info_sums)(const FLAC__int32 residual[], FLAC__uint64 abs_residual_partition_sums[], unsigned residual_samples, unsigned predictor_order, unsigned min_partition_order, unsigned max_partition_order, unsigned bps); |
| 355 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 356 | unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); |
| 357 | unsigned (*local_fixed_compute_best_predictor_wide)(const FLAC__int32 data[], unsigned data_len, float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); |
| 358 | #else |
| 359 | unsigned (*local_fixed_compute_best_predictor)(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); |
| 360 | unsigned (*local_fixed_compute_best_predictor_wide)(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); |
| 361 | #endif |
| 362 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 363 | void (*local_lpc_compute_autocorrelation)(const FLAC__real data[], unsigned data_len, unsigned lag, FLAC__real autoc[]); |
| 364 | void (*local_lpc_compute_residual_from_qlp_coefficients)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]); |
| 365 | void (*local_lpc_compute_residual_from_qlp_coefficients_64bit)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]); |
| 366 | void (*local_lpc_compute_residual_from_qlp_coefficients_16bit)(const FLAC__int32 *data, unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 residual[]); |
| 367 | #endif |
| 368 | FLAC__bool disable_constant_subframes; |
| 369 | FLAC__bool disable_fixed_subframes; |
| 370 | FLAC__bool disable_verbatim_subframes; |
| 371 | FLAC__bool is_ogg; |
| 372 | FLAC__StreamEncoderReadCallback read_callback; /* currently only needed for Ogg FLAC */ |
| 373 | FLAC__StreamEncoderSeekCallback seek_callback; |
| 374 | FLAC__StreamEncoderTellCallback tell_callback; |
| 375 | FLAC__StreamEncoderWriteCallback write_callback; |
| 376 | FLAC__StreamEncoderMetadataCallback metadata_callback; |
| 377 | FLAC__StreamEncoderProgressCallback progress_callback; |
| 378 | void *client_data; |
| 379 | unsigned first_seekpoint_to_check; |
| 380 | FILE *file; /* only used when encoding to a file */ |
| 381 | FLAC__uint64 bytes_written; |
| 382 | FLAC__uint64 samples_written; |
| 383 | unsigned frames_written; |
| 384 | unsigned total_frames_estimate; |
| 385 | /* unaligned (original) pointers to allocated data */ |
| 386 | FLAC__int32 *integer_signal_unaligned[FLAC__MAX_CHANNELS]; |
| 387 | FLAC__int32 *integer_signal_mid_side_unaligned[2]; |
| 388 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 389 | FLAC__real *real_signal_unaligned[FLAC__MAX_CHANNELS]; /* (@@@ currently unused) */ |
| 390 | FLAC__real *real_signal_mid_side_unaligned[2]; /* (@@@ currently unused) */ |
| 391 | FLAC__real *window_unaligned[FLAC__MAX_APODIZATION_FUNCTIONS]; |
| 392 | FLAC__real *windowed_signal_unaligned; |
| 393 | #endif |
| 394 | FLAC__int32 *residual_workspace_unaligned[FLAC__MAX_CHANNELS][2]; |
| 395 | FLAC__int32 *residual_workspace_mid_side_unaligned[2][2]; |
| 396 | FLAC__uint64 *abs_residual_partition_sums_unaligned; |
| 397 | unsigned *raw_bits_per_partition_unaligned; |
| 398 | /* |
| 399 | * These fields have been moved here from private function local |
| 400 | * declarations merely to save stack space during encoding. |
| 401 | */ |
| 402 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 403 | FLAC__real lp_coeff[FLAC__MAX_LPC_ORDER][FLAC__MAX_LPC_ORDER]; /* from process_subframe_() */ |
| 404 | #endif |
| 405 | FLAC__EntropyCodingMethod_PartitionedRiceContents partitioned_rice_contents_extra[2]; /* from find_best_partition_order_() */ |
| 406 | /* |
| 407 | * The data for the verify section |
| 408 | */ |
| 409 | struct { |
| 410 | FLAC__StreamDecoder *decoder; |
| 411 | EncoderStateHint state_hint; |
| 412 | FLAC__bool needs_magic_hack; |
| 413 | verify_input_fifo input_fifo; |
| 414 | verify_output output; |
| 415 | struct { |
| 416 | FLAC__uint64 absolute_sample; |
| 417 | unsigned frame_number; |
| 418 | unsigned channel; |
| 419 | unsigned sample; |
| 420 | FLAC__int32 expected; |
| 421 | FLAC__int32 got; |
| 422 | } error_stats; |
| 423 | } verify; |
| 424 | FLAC__bool is_being_deleted; /* if true, call to ..._finish() from ..._delete() will not call the callbacks */ |
| 425 | } FLAC__StreamEncoderPrivate; |
| 426 | |
| 427 | /*********************************************************************** |
| 428 | * |
| 429 | * Public static class data |
| 430 | * |
| 431 | ***********************************************************************/ |
| 432 | |
| 433 | FLAC_API const char * const FLAC__StreamEncoderStateString[] = { |
| 434 | "FLAC__STREAM_ENCODER_OK", |
| 435 | "FLAC__STREAM_ENCODER_UNINITIALIZED", |
| 436 | "FLAC__STREAM_ENCODER_OGG_ERROR", |
| 437 | "FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR", |
| 438 | "FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA", |
| 439 | "FLAC__STREAM_ENCODER_CLIENT_ERROR", |
| 440 | "FLAC__STREAM_ENCODER_IO_ERROR", |
| 441 | "FLAC__STREAM_ENCODER_FRAMING_ERROR", |
| 442 | "FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR" |
| 443 | }; |
| 444 | |
| 445 | FLAC_API const char * const FLAC__StreamEncoderInitStatusString[] = { |
| 446 | "FLAC__STREAM_ENCODER_INIT_STATUS_OK", |
| 447 | "FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR", |
| 448 | "FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER", |
| 449 | "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS", |
| 450 | "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS", |
| 451 | "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE", |
| 452 | "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE", |
| 453 | "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE", |
| 454 | "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER", |
| 455 | "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION", |
| 456 | "FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER", |
| 457 | "FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE", |
| 458 | "FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA", |
| 459 | "FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED" |
| 460 | }; |
| 461 | |
| 462 | FLAC_API const char * const FLAC__StreamEncoderReadStatusString[] = { |
| 463 | "FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE", |
| 464 | "FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM", |
| 465 | "FLAC__STREAM_ENCODER_READ_STATUS_ABORT", |
| 466 | "FLAC__STREAM_ENCODER_READ_STATUS_UNSUPPORTED" |
| 467 | }; |
| 468 | |
| 469 | FLAC_API const char * const FLAC__StreamEncoderWriteStatusString[] = { |
| 470 | "FLAC__STREAM_ENCODER_WRITE_STATUS_OK", |
| 471 | "FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR" |
| 472 | }; |
| 473 | |
| 474 | FLAC_API const char * const FLAC__StreamEncoderSeekStatusString[] = { |
| 475 | "FLAC__STREAM_ENCODER_SEEK_STATUS_OK", |
| 476 | "FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR", |
| 477 | "FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED" |
| 478 | }; |
| 479 | |
| 480 | FLAC_API const char * const FLAC__StreamEncoderTellStatusString[] = { |
| 481 | "FLAC__STREAM_ENCODER_TELL_STATUS_OK", |
| 482 | "FLAC__STREAM_ENCODER_TELL_STATUS_ERROR", |
| 483 | "FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED" |
| 484 | }; |
| 485 | |
| 486 | /* Number of samples that will be overread to watch for end of stream. By |
| 487 | * 'overread', we mean that the FLAC__stream_encoder_process*() calls will |
| 488 | * always try to read blocksize+1 samples before encoding a block, so that |
| 489 | * even if the stream has a total sample count that is an integral multiple |
| 490 | * of the blocksize, we will still notice when we are encoding the last |
| 491 | * block. This is needed, for example, to correctly set the end-of-stream |
| 492 | * marker in Ogg FLAC. |
| 493 | * |
| 494 | * WATCHOUT: some parts of the code assert that OVERREAD_ == 1 and there's |
| 495 | * not really any reason to change it. |
| 496 | */ |
| 497 | static const unsigned OVERREAD_ = 1; |
| 498 | |
| 499 | /*********************************************************************** |
| 500 | * |
| 501 | * Class constructor/destructor |
| 502 | * |
| 503 | */ |
| 504 | FLAC_API FLAC__StreamEncoder *FLAC__stream_encoder_new(void) |
| 505 | { |
| 506 | FLAC__StreamEncoder *encoder; |
| 507 | unsigned i; |
| 508 | |
| 509 | FLAC__ASSERT(sizeof(int) >= 4); /* we want to die right away if this is not true */ |
| 510 | |
| 511 | encoder = calloc(1, sizeof(FLAC__StreamEncoder)); |
| 512 | if(encoder == 0) { |
| 513 | return 0; |
| 514 | } |
| 515 | |
| 516 | encoder->protected_ = calloc(1, sizeof(FLAC__StreamEncoderProtected)); |
| 517 | if(encoder->protected_ == 0) { |
| 518 | free(encoder); |
| 519 | return 0; |
| 520 | } |
| 521 | |
| 522 | encoder->private_ = calloc(1, sizeof(FLAC__StreamEncoderPrivate)); |
| 523 | if(encoder->private_ == 0) { |
| 524 | free(encoder->protected_); |
| 525 | free(encoder); |
| 526 | return 0; |
| 527 | } |
| 528 | |
| 529 | encoder->private_->frame = FLAC__bitwriter_new(); |
| 530 | if(encoder->private_->frame == 0) { |
| 531 | free(encoder->private_); |
| 532 | free(encoder->protected_); |
| 533 | free(encoder); |
| 534 | return 0; |
| 535 | } |
| 536 | |
| 537 | encoder->private_->file = 0; |
| 538 | |
| 539 | set_defaults_(encoder); |
| 540 | |
| 541 | encoder->private_->is_being_deleted = false; |
| 542 | |
| 543 | for(i = 0; i < FLAC__MAX_CHANNELS; i++) { |
| 544 | encoder->private_->subframe_workspace_ptr[i][0] = &encoder->private_->subframe_workspace[i][0]; |
| 545 | encoder->private_->subframe_workspace_ptr[i][1] = &encoder->private_->subframe_workspace[i][1]; |
| 546 | } |
| 547 | for(i = 0; i < 2; i++) { |
| 548 | encoder->private_->subframe_workspace_ptr_mid_side[i][0] = &encoder->private_->subframe_workspace_mid_side[i][0]; |
| 549 | encoder->private_->subframe_workspace_ptr_mid_side[i][1] = &encoder->private_->subframe_workspace_mid_side[i][1]; |
| 550 | } |
| 551 | for(i = 0; i < FLAC__MAX_CHANNELS; i++) { |
| 552 | encoder->private_->partitioned_rice_contents_workspace_ptr[i][0] = &encoder->private_->partitioned_rice_contents_workspace[i][0]; |
| 553 | encoder->private_->partitioned_rice_contents_workspace_ptr[i][1] = &encoder->private_->partitioned_rice_contents_workspace[i][1]; |
| 554 | } |
| 555 | for(i = 0; i < 2; i++) { |
| 556 | encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][0] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]; |
| 557 | encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[i][1] = &encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]; |
| 558 | } |
| 559 | |
| 560 | for(i = 0; i < FLAC__MAX_CHANNELS; i++) { |
| 561 | FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][0]); |
| 562 | FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace[i][1]); |
| 563 | } |
| 564 | for(i = 0; i < 2; i++) { |
| 565 | FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]); |
| 566 | FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]); |
| 567 | } |
| 568 | for(i = 0; i < 2; i++) |
| 569 | FLAC__format_entropy_coding_method_partitioned_rice_contents_init(&encoder->private_->partitioned_rice_contents_extra[i]); |
| 570 | |
| 571 | encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED; |
| 572 | |
| 573 | return encoder; |
| 574 | } |
| 575 | |
| 576 | FLAC_API void FLAC__stream_encoder_delete(FLAC__StreamEncoder *encoder) |
| 577 | { |
| 578 | unsigned i; |
| 579 | |
| 580 | if (encoder == NULL) |
| 581 | return ; |
| 582 | |
| 583 | FLAC__ASSERT(0 != encoder->protected_); |
| 584 | FLAC__ASSERT(0 != encoder->private_); |
| 585 | FLAC__ASSERT(0 != encoder->private_->frame); |
| 586 | |
| 587 | encoder->private_->is_being_deleted = true; |
| 588 | |
| 589 | (void)FLAC__stream_encoder_finish(encoder); |
| 590 | |
| 591 | if(0 != encoder->private_->verify.decoder) |
| 592 | FLAC__stream_decoder_delete(encoder->private_->verify.decoder); |
| 593 | |
| 594 | for(i = 0; i < FLAC__MAX_CHANNELS; i++) { |
| 595 | FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][0]); |
| 596 | FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace[i][1]); |
| 597 | } |
| 598 | for(i = 0; i < 2; i++) { |
| 599 | FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][0]); |
| 600 | FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_workspace_mid_side[i][1]); |
| 601 | } |
| 602 | for(i = 0; i < 2; i++) |
| 603 | FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(&encoder->private_->partitioned_rice_contents_extra[i]); |
| 604 | |
| 605 | FLAC__bitwriter_delete(encoder->private_->frame); |
| 606 | free(encoder->private_); |
| 607 | free(encoder->protected_); |
| 608 | free(encoder); |
| 609 | } |
| 610 | |
| 611 | /*********************************************************************** |
| 612 | * |
| 613 | * Public class methods |
| 614 | * |
| 615 | ***********************************************************************/ |
| 616 | |
| 617 | static FLAC__StreamEncoderInitStatus init_stream_internal_( |
| 618 | FLAC__StreamEncoder *encoder, |
| 619 | FLAC__StreamEncoderReadCallback read_callback, |
| 620 | FLAC__StreamEncoderWriteCallback write_callback, |
| 621 | FLAC__StreamEncoderSeekCallback seek_callback, |
| 622 | FLAC__StreamEncoderTellCallback tell_callback, |
| 623 | FLAC__StreamEncoderMetadataCallback metadata_callback, |
| 624 | void *client_data, |
| 625 | FLAC__bool is_ogg |
| 626 | ) |
| 627 | { |
| 628 | unsigned i; |
| 629 | FLAC__bool metadata_has_seektable, metadata_has_vorbis_comment, metadata_picture_has_type1, metadata_picture_has_type2; |
| 630 | |
| 631 | FLAC__ASSERT(0 != encoder); |
| 632 | |
| 633 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 634 | return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED; |
| 635 | |
| 636 | if(FLAC__HAS_OGG == 0 && is_ogg) |
| 637 | return FLAC__STREAM_ENCODER_INIT_STATUS_UNSUPPORTED_CONTAINER; |
| 638 | |
| 639 | if(0 == write_callback || (seek_callback && 0 == tell_callback)) |
| 640 | return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_CALLBACKS; |
| 641 | |
| 642 | if(encoder->protected_->channels == 0 || encoder->protected_->channels > FLAC__MAX_CHANNELS) |
| 643 | return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_NUMBER_OF_CHANNELS; |
| 644 | |
| 645 | if(encoder->protected_->channels != 2) { |
| 646 | encoder->protected_->do_mid_side_stereo = false; |
| 647 | encoder->protected_->loose_mid_side_stereo = false; |
| 648 | } |
| 649 | else if(!encoder->protected_->do_mid_side_stereo) |
| 650 | encoder->protected_->loose_mid_side_stereo = false; |
| 651 | |
| 652 | if(encoder->protected_->bits_per_sample >= 32) |
| 653 | encoder->protected_->do_mid_side_stereo = false; /* since we currenty do 32-bit math, the side channel would have 33 bps and overflow */ |
| 654 | |
| 655 | if(encoder->protected_->bits_per_sample < FLAC__MIN_BITS_PER_SAMPLE || encoder->protected_->bits_per_sample > FLAC__REFERENCE_CODEC_MAX_BITS_PER_SAMPLE) |
| 656 | return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BITS_PER_SAMPLE; |
| 657 | |
| 658 | if(!FLAC__format_sample_rate_is_valid(encoder->protected_->sample_rate)) |
| 659 | return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_SAMPLE_RATE; |
| 660 | |
| 661 | if(encoder->protected_->blocksize == 0) { |
| 662 | if(encoder->protected_->max_lpc_order == 0) |
| 663 | encoder->protected_->blocksize = 1152; |
| 664 | else |
| 665 | encoder->protected_->blocksize = 4096; |
| 666 | } |
| 667 | |
| 668 | if(encoder->protected_->blocksize < FLAC__MIN_BLOCK_SIZE || encoder->protected_->blocksize > FLAC__MAX_BLOCK_SIZE) |
| 669 | return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_BLOCK_SIZE; |
| 670 | |
| 671 | if(encoder->protected_->max_lpc_order > FLAC__MAX_LPC_ORDER) |
| 672 | return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_MAX_LPC_ORDER; |
| 673 | |
| 674 | if(encoder->protected_->blocksize < encoder->protected_->max_lpc_order) |
| 675 | return FLAC__STREAM_ENCODER_INIT_STATUS_BLOCK_SIZE_TOO_SMALL_FOR_LPC_ORDER; |
| 676 | |
| 677 | if(encoder->protected_->qlp_coeff_precision == 0) { |
| 678 | if(encoder->protected_->bits_per_sample < 16) { |
| 679 | /* @@@ need some data about how to set this here w.r.t. blocksize and sample rate */ |
| 680 | /* @@@ until then we'll make a guess */ |
| 681 | encoder->protected_->qlp_coeff_precision = flac_max(FLAC__MIN_QLP_COEFF_PRECISION, 2 + encoder->protected_->bits_per_sample / 2); |
| 682 | } |
| 683 | else if(encoder->protected_->bits_per_sample == 16) { |
| 684 | if(encoder->protected_->blocksize <= 192) |
| 685 | encoder->protected_->qlp_coeff_precision = 7; |
| 686 | else if(encoder->protected_->blocksize <= 384) |
| 687 | encoder->protected_->qlp_coeff_precision = 8; |
| 688 | else if(encoder->protected_->blocksize <= 576) |
| 689 | encoder->protected_->qlp_coeff_precision = 9; |
| 690 | else if(encoder->protected_->blocksize <= 1152) |
| 691 | encoder->protected_->qlp_coeff_precision = 10; |
| 692 | else if(encoder->protected_->blocksize <= 2304) |
| 693 | encoder->protected_->qlp_coeff_precision = 11; |
| 694 | else if(encoder->protected_->blocksize <= 4608) |
| 695 | encoder->protected_->qlp_coeff_precision = 12; |
| 696 | else |
| 697 | encoder->protected_->qlp_coeff_precision = 13; |
| 698 | } |
| 699 | else { |
| 700 | if(encoder->protected_->blocksize <= 384) |
| 701 | encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-2; |
| 702 | else if(encoder->protected_->blocksize <= 1152) |
| 703 | encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION-1; |
| 704 | else |
| 705 | encoder->protected_->qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION; |
| 706 | } |
| 707 | FLAC__ASSERT(encoder->protected_->qlp_coeff_precision <= FLAC__MAX_QLP_COEFF_PRECISION); |
| 708 | } |
| 709 | else if(encoder->protected_->qlp_coeff_precision < FLAC__MIN_QLP_COEFF_PRECISION || encoder->protected_->qlp_coeff_precision > FLAC__MAX_QLP_COEFF_PRECISION) |
| 710 | return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_QLP_COEFF_PRECISION; |
| 711 | |
| 712 | if(encoder->protected_->streamable_subset) { |
| 713 | if(!FLAC__format_blocksize_is_subset(encoder->protected_->blocksize, encoder->protected_->sample_rate)) |
| 714 | return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE; |
| 715 | if(!FLAC__format_sample_rate_is_subset(encoder->protected_->sample_rate)) |
| 716 | return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE; |
| 717 | if( |
| 718 | encoder->protected_->bits_per_sample != 8 && |
| 719 | encoder->protected_->bits_per_sample != 12 && |
| 720 | encoder->protected_->bits_per_sample != 16 && |
| 721 | encoder->protected_->bits_per_sample != 20 && |
| 722 | encoder->protected_->bits_per_sample != 24 |
| 723 | ) |
| 724 | return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE; |
| 725 | if(encoder->protected_->max_residual_partition_order > FLAC__SUBSET_MAX_RICE_PARTITION_ORDER) |
| 726 | return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE; |
| 727 | if( |
| 728 | encoder->protected_->sample_rate <= 48000 && |
| 729 | ( |
| 730 | encoder->protected_->blocksize > FLAC__SUBSET_MAX_BLOCK_SIZE_48000HZ || |
| 731 | encoder->protected_->max_lpc_order > FLAC__SUBSET_MAX_LPC_ORDER_48000HZ |
| 732 | ) |
| 733 | ) { |
| 734 | return FLAC__STREAM_ENCODER_INIT_STATUS_NOT_STREAMABLE; |
| 735 | } |
| 736 | } |
| 737 | |
| 738 | if(encoder->protected_->max_residual_partition_order >= (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN)) |
| 739 | encoder->protected_->max_residual_partition_order = (1u << FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN) - 1; |
| 740 | if(encoder->protected_->min_residual_partition_order >= encoder->protected_->max_residual_partition_order) |
| 741 | encoder->protected_->min_residual_partition_order = encoder->protected_->max_residual_partition_order; |
| 742 | |
| 743 | #if FLAC__HAS_OGG |
| 744 | /* reorder metadata if necessary to ensure that any VORBIS_COMMENT is the first, according to the mapping spec */ |
| 745 | if(is_ogg && 0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 1) { |
| 746 | unsigned i1; |
| 747 | for(i1 = 1; i1 < encoder->protected_->num_metadata_blocks; i1++) { |
| 748 | if(0 != encoder->protected_->metadata[i1] && encoder->protected_->metadata[i1]->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) { |
| 749 | FLAC__StreamMetadata *vc = encoder->protected_->metadata[i1]; |
| 750 | for( ; i1 > 0; i1--) |
| 751 | encoder->protected_->metadata[i1] = encoder->protected_->metadata[i1-1]; |
| 752 | encoder->protected_->metadata[0] = vc; |
| 753 | break; |
| 754 | } |
| 755 | } |
| 756 | } |
| 757 | #endif |
| 758 | /* keep track of any SEEKTABLE block */ |
| 759 | if(0 != encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0) { |
| 760 | unsigned i2; |
| 761 | for(i2 = 0; i2 < encoder->protected_->num_metadata_blocks; i2++) { |
| 762 | if(0 != encoder->protected_->metadata[i2] && encoder->protected_->metadata[i2]->type == FLAC__METADATA_TYPE_SEEKTABLE) { |
| 763 | encoder->private_->seek_table = &encoder->protected_->metadata[i2]->data.seek_table; |
| 764 | break; /* take only the first one */ |
| 765 | } |
| 766 | } |
| 767 | } |
| 768 | |
| 769 | /* validate metadata */ |
| 770 | if(0 == encoder->protected_->metadata && encoder->protected_->num_metadata_blocks > 0) |
| 771 | return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; |
| 772 | metadata_has_seektable = false; |
| 773 | metadata_has_vorbis_comment = false; |
| 774 | metadata_picture_has_type1 = false; |
| 775 | metadata_picture_has_type2 = false; |
| 776 | for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) { |
| 777 | const FLAC__StreamMetadata *m = encoder->protected_->metadata[i]; |
| 778 | if(m->type == FLAC__METADATA_TYPE_STREAMINFO) |
| 779 | return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; |
| 780 | else if(m->type == FLAC__METADATA_TYPE_SEEKTABLE) { |
| 781 | if(metadata_has_seektable) /* only one is allowed */ |
| 782 | return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; |
| 783 | metadata_has_seektable = true; |
| 784 | if(!FLAC__format_seektable_is_legal(&m->data.seek_table)) |
| 785 | return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; |
| 786 | } |
| 787 | else if(m->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) { |
| 788 | if(metadata_has_vorbis_comment) /* only one is allowed */ |
| 789 | return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; |
| 790 | metadata_has_vorbis_comment = true; |
| 791 | } |
| 792 | else if(m->type == FLAC__METADATA_TYPE_CUESHEET) { |
| 793 | if(!FLAC__format_cuesheet_is_legal(&m->data.cue_sheet, m->data.cue_sheet.is_cd, /*violation=*/0)) |
| 794 | return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; |
| 795 | } |
| 796 | else if(m->type == FLAC__METADATA_TYPE_PICTURE) { |
| 797 | if(!FLAC__format_picture_is_legal(&m->data.picture, /*violation=*/0)) |
| 798 | return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; |
| 799 | if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD) { |
| 800 | if(metadata_picture_has_type1) /* there should only be 1 per stream */ |
| 801 | return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; |
| 802 | metadata_picture_has_type1 = true; |
| 803 | /* standard icon must be 32x32 pixel PNG */ |
| 804 | if( |
| 805 | m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD && |
| 806 | ( |
| 807 | (strcmp(m->data.picture.mime_type, "image/png") && strcmp(m->data.picture.mime_type, "-->")) || |
| 808 | m->data.picture.width != 32 || |
| 809 | m->data.picture.height != 32 |
| 810 | ) |
| 811 | ) |
| 812 | return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; |
| 813 | } |
| 814 | else if(m->data.picture.type == FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON) { |
| 815 | if(metadata_picture_has_type2) /* there should only be 1 per stream */ |
| 816 | return FLAC__STREAM_ENCODER_INIT_STATUS_INVALID_METADATA; |
| 817 | metadata_picture_has_type2 = true; |
| 818 | } |
| 819 | } |
| 820 | } |
| 821 | |
| 822 | encoder->private_->input_capacity = 0; |
| 823 | for(i = 0; i < encoder->protected_->channels; i++) { |
| 824 | encoder->private_->integer_signal_unaligned[i] = encoder->private_->integer_signal[i] = 0; |
| 825 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 826 | encoder->private_->real_signal_unaligned[i] = encoder->private_->real_signal[i] = 0; |
| 827 | #endif |
| 828 | } |
| 829 | for(i = 0; i < 2; i++) { |
| 830 | encoder->private_->integer_signal_mid_side_unaligned[i] = encoder->private_->integer_signal_mid_side[i] = 0; |
| 831 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 832 | encoder->private_->real_signal_mid_side_unaligned[i] = encoder->private_->real_signal_mid_side[i] = 0; |
| 833 | #endif |
| 834 | } |
| 835 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 836 | for(i = 0; i < encoder->protected_->num_apodizations; i++) |
| 837 | encoder->private_->window_unaligned[i] = encoder->private_->window[i] = 0; |
| 838 | encoder->private_->windowed_signal_unaligned = encoder->private_->windowed_signal = 0; |
| 839 | #endif |
| 840 | for(i = 0; i < encoder->protected_->channels; i++) { |
| 841 | encoder->private_->residual_workspace_unaligned[i][0] = encoder->private_->residual_workspace[i][0] = 0; |
| 842 | encoder->private_->residual_workspace_unaligned[i][1] = encoder->private_->residual_workspace[i][1] = 0; |
| 843 | encoder->private_->best_subframe[i] = 0; |
| 844 | } |
| 845 | for(i = 0; i < 2; i++) { |
| 846 | encoder->private_->residual_workspace_mid_side_unaligned[i][0] = encoder->private_->residual_workspace_mid_side[i][0] = 0; |
| 847 | encoder->private_->residual_workspace_mid_side_unaligned[i][1] = encoder->private_->residual_workspace_mid_side[i][1] = 0; |
| 848 | encoder->private_->best_subframe_mid_side[i] = 0; |
| 849 | } |
| 850 | encoder->private_->abs_residual_partition_sums_unaligned = encoder->private_->abs_residual_partition_sums = 0; |
| 851 | encoder->private_->raw_bits_per_partition_unaligned = encoder->private_->raw_bits_per_partition = 0; |
| 852 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 853 | encoder->private_->loose_mid_side_stereo_frames = (unsigned)((double)encoder->protected_->sample_rate * 0.4 / (double)encoder->protected_->blocksize + 0.5); |
| 854 | #else |
| 855 | /* 26214 is the approximate fixed-point equivalent to 0.4 (0.4 * 2^16) */ |
| 856 | /* sample rate can be up to 655350 Hz, and thus use 20 bits, so we do the multiply÷ by hand */ |
| 857 | FLAC__ASSERT(FLAC__MAX_SAMPLE_RATE <= 655350); |
| 858 | FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535); |
| 859 | FLAC__ASSERT(encoder->protected_->sample_rate <= 655350); |
| 860 | FLAC__ASSERT(encoder->protected_->blocksize <= 65535); |
| 861 | encoder->private_->loose_mid_side_stereo_frames = (unsigned)FLAC__fixedpoint_trunc((((FLAC__uint64)(encoder->protected_->sample_rate) * (FLAC__uint64)(26214)) << 16) / (encoder->protected_->blocksize<<16) + FLAC__FP_ONE_HALF); |
| 862 | #endif |
| 863 | if(encoder->private_->loose_mid_side_stereo_frames == 0) |
| 864 | encoder->private_->loose_mid_side_stereo_frames = 1; |
| 865 | encoder->private_->loose_mid_side_stereo_frame_count = 0; |
| 866 | encoder->private_->current_sample_number = 0; |
| 867 | encoder->private_->current_frame_number = 0; |
| 868 | |
| 869 | /* |
| 870 | * get the CPU info and set the function pointers |
| 871 | */ |
| 872 | FLAC__cpu_info(&encoder->private_->cpuinfo); |
| 873 | /* first default to the non-asm routines */ |
| 874 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 875 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation; |
| 876 | #endif |
| 877 | encoder->private_->local_precompute_partition_info_sums = precompute_partition_info_sums_; |
| 878 | encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor; |
| 879 | encoder->private_->local_fixed_compute_best_predictor_wide = FLAC__fixed_compute_best_predictor_wide; |
| 880 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 881 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients; |
| 882 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide; |
| 883 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients; |
| 884 | #endif |
| 885 | /* now override with asm where appropriate */ |
| 886 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 887 | # ifndef FLAC__NO_ASM |
| 888 | if(encoder->private_->cpuinfo.use_asm) { |
| 889 | # ifdef FLAC__CPU_IA32 |
| 890 | FLAC__ASSERT(encoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_IA32); |
| 891 | # ifdef FLAC__HAS_NASM |
| 892 | if(encoder->private_->cpuinfo.ia32.sse) { |
| 893 | if(encoder->protected_->max_lpc_order < 4) |
| 894 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_4_old; |
| 895 | else if(encoder->protected_->max_lpc_order < 8) |
| 896 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_8_old; |
| 897 | else if(encoder->protected_->max_lpc_order < 12) |
| 898 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_12_old; |
| 899 | else if(encoder->protected_->max_lpc_order < 16) |
| 900 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32_sse_lag_16_old; |
| 901 | else |
| 902 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32; |
| 903 | } |
| 904 | else |
| 905 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_asm_ia32; |
| 906 | |
| 907 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide_asm_ia32; /* OPT_IA32: was really necessary for GCC < 4.9 */ |
| 908 | if(encoder->private_->cpuinfo.ia32.mmx) { |
| 909 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32; |
| 910 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx; |
| 911 | } |
| 912 | else { |
| 913 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32; |
| 914 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32; |
| 915 | } |
| 916 | |
| 917 | if(encoder->private_->cpuinfo.ia32.mmx && encoder->private_->cpuinfo.ia32.cmov) |
| 918 | encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_asm_ia32_mmx_cmov; |
| 919 | # endif /* FLAC__HAS_NASM */ |
| 920 | # if FLAC__HAS_X86INTRIN |
| 921 | # if defined FLAC__SSE_SUPPORTED |
| 922 | if(encoder->private_->cpuinfo.ia32.sse) { |
| 923 | if(encoder->private_->cpuinfo.ia32.sse42 || !encoder->private_->cpuinfo.ia32.intel) { /* use new autocorrelation functions */ |
| 924 | if(encoder->protected_->max_lpc_order < 4) |
| 925 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_4_new; |
| 926 | else if(encoder->protected_->max_lpc_order < 8) |
| 927 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_8_new; |
| 928 | else if(encoder->protected_->max_lpc_order < 12) |
| 929 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_12_new; |
| 930 | else if(encoder->protected_->max_lpc_order < 16) |
| 931 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_16_new; |
| 932 | else |
| 933 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation; |
| 934 | } |
| 935 | else { /* use old autocorrelation functions */ |
| 936 | if(encoder->protected_->max_lpc_order < 4) |
| 937 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_4_old; |
| 938 | else if(encoder->protected_->max_lpc_order < 8) |
| 939 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_8_old; |
| 940 | else if(encoder->protected_->max_lpc_order < 12) |
| 941 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_12_old; |
| 942 | else if(encoder->protected_->max_lpc_order < 16) |
| 943 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_16_old; |
| 944 | else |
| 945 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation; |
| 946 | } |
| 947 | } |
| 948 | # endif |
| 949 | |
| 950 | # ifdef FLAC__SSE2_SUPPORTED |
| 951 | if(encoder->private_->cpuinfo.ia32.sse2) { |
| 952 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_intrin_sse2; |
| 953 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_16_intrin_sse2; |
| 954 | } |
| 955 | # endif |
| 956 | # ifdef FLAC__SSE4_1_SUPPORTED |
| 957 | if(encoder->private_->cpuinfo.ia32.sse41) { |
| 958 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_intrin_sse41; |
| 959 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide_intrin_sse41; |
| 960 | } |
| 961 | # endif |
| 962 | # ifdef FLAC__AVX2_SUPPORTED |
| 963 | if(encoder->private_->cpuinfo.ia32.avx2) { |
| 964 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_16_intrin_avx2; |
| 965 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_intrin_avx2; |
| 966 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide_intrin_avx2; |
| 967 | } |
| 968 | # endif |
| 969 | |
| 970 | # ifdef FLAC__SSE2_SUPPORTED |
| 971 | if (encoder->private_->cpuinfo.ia32.sse2) { |
| 972 | encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_intrin_sse2; |
| 973 | encoder->private_->local_fixed_compute_best_predictor_wide = FLAC__fixed_compute_best_predictor_wide_intrin_sse2; |
| 974 | } |
| 975 | # endif |
| 976 | # ifdef FLAC__SSSE3_SUPPORTED |
| 977 | if (encoder->private_->cpuinfo.ia32.ssse3) { |
| 978 | encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_intrin_ssse3; |
| 979 | encoder->private_->local_fixed_compute_best_predictor_wide = FLAC__fixed_compute_best_predictor_wide_intrin_ssse3; |
| 980 | } |
| 981 | # endif |
| 982 | # endif /* FLAC__HAS_X86INTRIN */ |
| 983 | # elif defined FLAC__CPU_X86_64 |
| 984 | FLAC__ASSERT(encoder->private_->cpuinfo.type == FLAC__CPUINFO_TYPE_X86_64); |
| 985 | # if FLAC__HAS_X86INTRIN |
| 986 | # ifdef FLAC__SSE_SUPPORTED |
| 987 | if(encoder->private_->cpuinfo.x86.sse42 || !encoder->private_->cpuinfo.x86.intel) { /* use new autocorrelation functions */ |
| 988 | if(encoder->protected_->max_lpc_order < 4) |
| 989 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_4_new; |
| 990 | else if(encoder->protected_->max_lpc_order < 8) |
| 991 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_8_new; |
| 992 | else if(encoder->protected_->max_lpc_order < 12) |
| 993 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_12_new; |
| 994 | else if(encoder->protected_->max_lpc_order < 16) |
| 995 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_16_new; |
| 996 | } |
| 997 | else { |
| 998 | if(encoder->protected_->max_lpc_order < 4) |
| 999 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_4_old; |
| 1000 | else if(encoder->protected_->max_lpc_order < 8) |
| 1001 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_8_old; |
| 1002 | else if(encoder->protected_->max_lpc_order < 12) |
| 1003 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_12_old; |
| 1004 | else if(encoder->protected_->max_lpc_order < 16) |
| 1005 | encoder->private_->local_lpc_compute_autocorrelation = FLAC__lpc_compute_autocorrelation_intrin_sse_lag_16_old; |
| 1006 | } |
| 1007 | # endif |
| 1008 | |
| 1009 | # ifdef FLAC__SSE2_SUPPORTED |
| 1010 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_16_intrin_sse2; |
| 1011 | # endif |
| 1012 | # ifdef FLAC__SSE4_1_SUPPORTED |
| 1013 | if(encoder->private_->cpuinfo.x86.sse41) { |
| 1014 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_intrin_sse41; |
| 1015 | } |
| 1016 | # endif |
| 1017 | # ifdef FLAC__AVX2_SUPPORTED |
| 1018 | if(encoder->private_->cpuinfo.x86.avx2) { |
| 1019 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit = FLAC__lpc_compute_residual_from_qlp_coefficients_16_intrin_avx2; |
| 1020 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients = FLAC__lpc_compute_residual_from_qlp_coefficients_intrin_avx2; |
| 1021 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit = FLAC__lpc_compute_residual_from_qlp_coefficients_wide_intrin_avx2; |
| 1022 | } |
| 1023 | # endif |
| 1024 | |
| 1025 | # ifdef FLAC__SSE2_SUPPORTED |
| 1026 | encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_intrin_sse2; |
| 1027 | encoder->private_->local_fixed_compute_best_predictor_wide = FLAC__fixed_compute_best_predictor_wide_intrin_sse2; |
| 1028 | # endif |
| 1029 | # ifdef FLAC__SSSE3_SUPPORTED |
| 1030 | if (encoder->private_->cpuinfo.x86.ssse3) { |
| 1031 | encoder->private_->local_fixed_compute_best_predictor = FLAC__fixed_compute_best_predictor_intrin_ssse3; |
| 1032 | encoder->private_->local_fixed_compute_best_predictor_wide = FLAC__fixed_compute_best_predictor_wide_intrin_ssse3; |
| 1033 | } |
| 1034 | # endif |
| 1035 | # endif /* FLAC__HAS_X86INTRIN */ |
| 1036 | # endif /* FLAC__CPU_... */ |
| 1037 | } |
| 1038 | # endif /* !FLAC__NO_ASM */ |
| 1039 | #endif /* !FLAC__INTEGER_ONLY_LIBRARY */ |
| 1040 | #if !defined FLAC__NO_ASM && FLAC__HAS_X86INTRIN |
| 1041 | if(encoder->private_->cpuinfo.use_asm) { |
| 1042 | # if defined FLAC__CPU_IA32 |
| 1043 | # ifdef FLAC__SSE2_SUPPORTED |
| 1044 | if(encoder->private_->cpuinfo.ia32.sse2) |
| 1045 | encoder->private_->local_precompute_partition_info_sums = FLAC__precompute_partition_info_sums_intrin_sse2; |
| 1046 | # endif |
| 1047 | # ifdef FLAC__SSSE3_SUPPORTED |
| 1048 | if(encoder->private_->cpuinfo.ia32.ssse3) |
| 1049 | encoder->private_->local_precompute_partition_info_sums = FLAC__precompute_partition_info_sums_intrin_ssse3; |
| 1050 | # endif |
| 1051 | # ifdef FLAC__AVX2_SUPPORTED |
| 1052 | if(encoder->private_->cpuinfo.ia32.avx2) |
| 1053 | encoder->private_->local_precompute_partition_info_sums = FLAC__precompute_partition_info_sums_intrin_avx2; |
| 1054 | # endif |
| 1055 | # elif defined FLAC__CPU_X86_64 |
| 1056 | # ifdef FLAC__SSE2_SUPPORTED |
| 1057 | encoder->private_->local_precompute_partition_info_sums = FLAC__precompute_partition_info_sums_intrin_sse2; |
| 1058 | # endif |
| 1059 | # ifdef FLAC__SSSE3_SUPPORTED |
| 1060 | if(encoder->private_->cpuinfo.x86.ssse3) |
| 1061 | encoder->private_->local_precompute_partition_info_sums = FLAC__precompute_partition_info_sums_intrin_ssse3; |
| 1062 | # endif |
| 1063 | # ifdef FLAC__AVX2_SUPPORTED |
| 1064 | if(encoder->private_->cpuinfo.x86.avx2) |
| 1065 | encoder->private_->local_precompute_partition_info_sums = FLAC__precompute_partition_info_sums_intrin_avx2; |
| 1066 | # endif |
| 1067 | # endif /* FLAC__CPU_... */ |
| 1068 | } |
| 1069 | #endif /* !FLAC__NO_ASM && FLAC__HAS_X86INTRIN */ |
| 1070 | |
| 1071 | /* set state to OK; from here on, errors are fatal and we'll override the state then */ |
| 1072 | encoder->protected_->state = FLAC__STREAM_ENCODER_OK; |
| 1073 | |
| 1074 | #if FLAC__HAS_OGG |
| 1075 | encoder->private_->is_ogg = is_ogg; |
| 1076 | if(is_ogg && !FLAC__ogg_encoder_aspect_init(&encoder->protected_->ogg_encoder_aspect)) { |
| 1077 | encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR; |
| 1078 | return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; |
| 1079 | } |
| 1080 | #endif |
| 1081 | |
| 1082 | encoder->private_->read_callback = read_callback; |
| 1083 | encoder->private_->write_callback = write_callback; |
| 1084 | encoder->private_->seek_callback = seek_callback; |
| 1085 | encoder->private_->tell_callback = tell_callback; |
| 1086 | encoder->private_->metadata_callback = metadata_callback; |
| 1087 | encoder->private_->client_data = client_data; |
| 1088 | |
| 1089 | if(!resize_buffers_(encoder, encoder->protected_->blocksize)) { |
| 1090 | /* the above function sets the state for us in case of an error */ |
| 1091 | return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; |
| 1092 | } |
| 1093 | |
| 1094 | if(!FLAC__bitwriter_init(encoder->private_->frame)) { |
| 1095 | encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; |
| 1096 | return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; |
| 1097 | } |
| 1098 | |
| 1099 | /* |
| 1100 | * Set up the verify stuff if necessary |
| 1101 | */ |
| 1102 | if(encoder->protected_->verify) { |
| 1103 | /* |
| 1104 | * First, set up the fifo which will hold the |
| 1105 | * original signal to compare against |
| 1106 | */ |
| 1107 | encoder->private_->verify.input_fifo.size = encoder->protected_->blocksize+OVERREAD_; |
| 1108 | for(i = 0; i < encoder->protected_->channels; i++) { |
| 1109 | if(0 == (encoder->private_->verify.input_fifo.data[i] = safe_malloc_mul_2op_p(sizeof(FLAC__int32), /*times*/encoder->private_->verify.input_fifo.size))) { |
| 1110 | encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; |
| 1111 | return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; |
| 1112 | } |
| 1113 | } |
| 1114 | encoder->private_->verify.input_fifo.tail = 0; |
| 1115 | |
| 1116 | /* |
| 1117 | * Now set up a stream decoder for verification |
| 1118 | */ |
| 1119 | if(0 == encoder->private_->verify.decoder) { |
| 1120 | encoder->private_->verify.decoder = FLAC__stream_decoder_new(); |
| 1121 | if(0 == encoder->private_->verify.decoder) { |
| 1122 | encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR; |
| 1123 | return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; |
| 1124 | } |
| 1125 | } |
| 1126 | |
| 1127 | if(FLAC__stream_decoder_init_stream(encoder->private_->verify.decoder, verify_read_callback_, /*seek_callback=*/0, /*tell_callback=*/0, /*length_callback=*/0, /*eof_callback=*/0, verify_write_callback_, verify_metadata_callback_, verify_error_callback_, /*client_data=*/encoder) != FLAC__STREAM_DECODER_INIT_STATUS_OK) { |
| 1128 | encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR; |
| 1129 | return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; |
| 1130 | } |
| 1131 | } |
| 1132 | encoder->private_->verify.error_stats.absolute_sample = 0; |
| 1133 | encoder->private_->verify.error_stats.frame_number = 0; |
| 1134 | encoder->private_->verify.error_stats.channel = 0; |
| 1135 | encoder->private_->verify.error_stats.sample = 0; |
| 1136 | encoder->private_->verify.error_stats.expected = 0; |
| 1137 | encoder->private_->verify.error_stats.got = 0; |
| 1138 | |
| 1139 | /* |
| 1140 | * These must be done before we write any metadata, because that |
| 1141 | * calls the write_callback, which uses these values. |
| 1142 | */ |
| 1143 | encoder->private_->first_seekpoint_to_check = 0; |
| 1144 | encoder->private_->samples_written = 0; |
| 1145 | encoder->protected_->streaminfo_offset = 0; |
| 1146 | encoder->protected_->seektable_offset = 0; |
| 1147 | encoder->protected_->audio_offset = 0; |
| 1148 | |
| 1149 | /* |
| 1150 | * write the stream header |
| 1151 | */ |
| 1152 | if(encoder->protected_->verify) |
| 1153 | encoder->private_->verify.state_hint = ENCODER_IN_MAGIC; |
| 1154 | if(!FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, FLAC__STREAM_SYNC, FLAC__STREAM_SYNC_LEN)) { |
| 1155 | encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; |
| 1156 | return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; |
| 1157 | } |
| 1158 | if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) { |
| 1159 | /* the above function sets the state for us in case of an error */ |
| 1160 | return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; |
| 1161 | } |
| 1162 | |
| 1163 | /* |
| 1164 | * write the STREAMINFO metadata block |
| 1165 | */ |
| 1166 | if(encoder->protected_->verify) |
| 1167 | encoder->private_->verify.state_hint = ENCODER_IN_METADATA; |
| 1168 | encoder->private_->streaminfo.type = FLAC__METADATA_TYPE_STREAMINFO; |
| 1169 | encoder->private_->streaminfo.is_last = false; /* we will have at a minimum a VORBIS_COMMENT afterwards */ |
| 1170 | encoder->private_->streaminfo.length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH; |
| 1171 | encoder->private_->streaminfo.data.stream_info.min_blocksize = encoder->protected_->blocksize; /* this encoder uses the same blocksize for the whole stream */ |
| 1172 | encoder->private_->streaminfo.data.stream_info.max_blocksize = encoder->protected_->blocksize; |
| 1173 | encoder->private_->streaminfo.data.stream_info.min_framesize = 0; /* we don't know this yet; have to fill it in later */ |
| 1174 | encoder->private_->streaminfo.data.stream_info.max_framesize = 0; /* we don't know this yet; have to fill it in later */ |
| 1175 | encoder->private_->streaminfo.data.stream_info.sample_rate = encoder->protected_->sample_rate; |
| 1176 | encoder->private_->streaminfo.data.stream_info.channels = encoder->protected_->channels; |
| 1177 | encoder->private_->streaminfo.data.stream_info.bits_per_sample = encoder->protected_->bits_per_sample; |
| 1178 | encoder->private_->streaminfo.data.stream_info.total_samples = encoder->protected_->total_samples_estimate; /* we will replace this later with the real total */ |
| 1179 | memset(encoder->private_->streaminfo.data.stream_info.md5sum, 0, 16); /* we don't know this yet; have to fill it in later */ |
| 1180 | if(encoder->protected_->do_md5) |
| 1181 | FLAC__MD5Init(&encoder->private_->md5context); |
| 1182 | if(!FLAC__add_metadata_block(&encoder->private_->streaminfo, encoder->private_->frame)) { |
| 1183 | encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; |
| 1184 | return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; |
| 1185 | } |
| 1186 | if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) { |
| 1187 | /* the above function sets the state for us in case of an error */ |
| 1188 | return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; |
| 1189 | } |
| 1190 | |
| 1191 | /* |
| 1192 | * Now that the STREAMINFO block is written, we can init this to an |
| 1193 | * absurdly-high value... |
| 1194 | */ |
| 1195 | encoder->private_->streaminfo.data.stream_info.min_framesize = (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN) - 1; |
| 1196 | /* ... and clear this to 0 */ |
| 1197 | encoder->private_->streaminfo.data.stream_info.total_samples = 0; |
| 1198 | |
| 1199 | /* |
| 1200 | * Check to see if the supplied metadata contains a VORBIS_COMMENT; |
| 1201 | * if not, we will write an empty one (FLAC__add_metadata_block() |
| 1202 | * automatically supplies the vendor string). |
| 1203 | * |
| 1204 | * WATCHOUT: the Ogg FLAC mapping requires us to write this block after |
| 1205 | * the STREAMINFO. (In the case that metadata_has_vorbis_comment is |
| 1206 | * true it will have already insured that the metadata list is properly |
| 1207 | * ordered.) |
| 1208 | */ |
| 1209 | if(!metadata_has_vorbis_comment) { |
| 1210 | FLAC__StreamMetadata vorbis_comment; |
| 1211 | vorbis_comment.type = FLAC__METADATA_TYPE_VORBIS_COMMENT; |
| 1212 | vorbis_comment.is_last = (encoder->protected_->num_metadata_blocks == 0); |
| 1213 | vorbis_comment.length = 4 + 4; /* MAGIC NUMBER */ |
| 1214 | vorbis_comment.data.vorbis_comment.vendor_string.length = 0; |
| 1215 | vorbis_comment.data.vorbis_comment.vendor_string.entry = 0; |
| 1216 | vorbis_comment.data.vorbis_comment.num_comments = 0; |
| 1217 | vorbis_comment.data.vorbis_comment.comments = 0; |
| 1218 | if(!FLAC__add_metadata_block(&vorbis_comment, encoder->private_->frame)) { |
| 1219 | encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; |
| 1220 | return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; |
| 1221 | } |
| 1222 | if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) { |
| 1223 | /* the above function sets the state for us in case of an error */ |
| 1224 | return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; |
| 1225 | } |
| 1226 | } |
| 1227 | |
| 1228 | /* |
| 1229 | * write the user's metadata blocks |
| 1230 | */ |
| 1231 | for(i = 0; i < encoder->protected_->num_metadata_blocks; i++) { |
| 1232 | encoder->protected_->metadata[i]->is_last = (i == encoder->protected_->num_metadata_blocks - 1); |
| 1233 | if(!FLAC__add_metadata_block(encoder->protected_->metadata[i], encoder->private_->frame)) { |
| 1234 | encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; |
| 1235 | return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; |
| 1236 | } |
| 1237 | if(!write_bitbuffer_(encoder, 0, /*is_last_block=*/false)) { |
| 1238 | /* the above function sets the state for us in case of an error */ |
| 1239 | return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; |
| 1240 | } |
| 1241 | } |
| 1242 | |
| 1243 | /* now that all the metadata is written, we save the stream offset */ |
| 1244 | if(encoder->private_->tell_callback && encoder->private_->tell_callback(encoder, &encoder->protected_->audio_offset, encoder->private_->client_data) == FLAC__STREAM_ENCODER_TELL_STATUS_ERROR) { /* FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED just means we didn't get the offset; no error */ |
| 1245 | encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; |
| 1246 | return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; |
| 1247 | } |
| 1248 | |
| 1249 | if(encoder->protected_->verify) |
| 1250 | encoder->private_->verify.state_hint = ENCODER_IN_AUDIO; |
| 1251 | |
| 1252 | return FLAC__STREAM_ENCODER_INIT_STATUS_OK; |
| 1253 | } |
| 1254 | |
| 1255 | FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_stream( |
| 1256 | FLAC__StreamEncoder *encoder, |
| 1257 | FLAC__StreamEncoderWriteCallback write_callback, |
| 1258 | FLAC__StreamEncoderSeekCallback seek_callback, |
| 1259 | FLAC__StreamEncoderTellCallback tell_callback, |
| 1260 | FLAC__StreamEncoderMetadataCallback metadata_callback, |
| 1261 | void *client_data |
| 1262 | ) |
| 1263 | { |
| 1264 | return init_stream_internal_( |
| 1265 | encoder, |
| 1266 | /*read_callback=*/0, |
| 1267 | write_callback, |
| 1268 | seek_callback, |
| 1269 | tell_callback, |
| 1270 | metadata_callback, |
| 1271 | client_data, |
| 1272 | /*is_ogg=*/false |
| 1273 | ); |
| 1274 | } |
| 1275 | |
| 1276 | FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_stream( |
| 1277 | FLAC__StreamEncoder *encoder, |
| 1278 | FLAC__StreamEncoderReadCallback read_callback, |
| 1279 | FLAC__StreamEncoderWriteCallback write_callback, |
| 1280 | FLAC__StreamEncoderSeekCallback seek_callback, |
| 1281 | FLAC__StreamEncoderTellCallback tell_callback, |
| 1282 | FLAC__StreamEncoderMetadataCallback metadata_callback, |
| 1283 | void *client_data |
| 1284 | ) |
| 1285 | { |
| 1286 | return init_stream_internal_( |
| 1287 | encoder, |
| 1288 | read_callback, |
| 1289 | write_callback, |
| 1290 | seek_callback, |
| 1291 | tell_callback, |
| 1292 | metadata_callback, |
| 1293 | client_data, |
| 1294 | /*is_ogg=*/true |
| 1295 | ); |
| 1296 | } |
| 1297 | |
| 1298 | static FLAC__StreamEncoderInitStatus init_FILE_internal_( |
| 1299 | FLAC__StreamEncoder *encoder, |
| 1300 | FILE *file, |
| 1301 | FLAC__StreamEncoderProgressCallback progress_callback, |
| 1302 | void *client_data, |
| 1303 | FLAC__bool is_ogg |
| 1304 | ) |
| 1305 | { |
| 1306 | FLAC__StreamEncoderInitStatus init_status; |
| 1307 | |
| 1308 | FLAC__ASSERT(0 != encoder); |
| 1309 | FLAC__ASSERT(0 != file); |
| 1310 | |
| 1311 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1312 | return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED; |
| 1313 | |
| 1314 | /* double protection */ |
| 1315 | if(file == 0) { |
| 1316 | encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR; |
| 1317 | return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; |
| 1318 | } |
| 1319 | |
| 1320 | /* |
| 1321 | * To make sure that our file does not go unclosed after an error, we |
| 1322 | * must assign the FILE pointer before any further error can occur in |
| 1323 | * this routine. |
| 1324 | */ |
| 1325 | if(file == stdout) |
| 1326 | file = get_binary_stdout_(); /* just to be safe */ |
| 1327 | |
| 1328 | #ifdef _WIN32 |
| 1329 | /* |
| 1330 | * Windows can suffer quite badly from disk fragmentation. This can be |
| 1331 | * reduced significantly by setting the output buffer size to be 10MB. |
| 1332 | */ |
| 1333 | if(GetFileType((HANDLE)_get_osfhandle(_fileno(file))) == FILE_TYPE_DISK) |
| 1334 | setvbuf(file, NULL, _IOFBF, 10*1024*1024); |
| 1335 | #endif |
| 1336 | encoder->private_->file = file; |
| 1337 | |
| 1338 | encoder->private_->progress_callback = progress_callback; |
| 1339 | encoder->private_->bytes_written = 0; |
| 1340 | encoder->private_->samples_written = 0; |
| 1341 | encoder->private_->frames_written = 0; |
| 1342 | |
| 1343 | init_status = init_stream_internal_( |
| 1344 | encoder, |
| 1345 | encoder->private_->file == stdout? 0 : is_ogg? file_read_callback_ : 0, |
| 1346 | file_write_callback_, |
| 1347 | encoder->private_->file == stdout? 0 : file_seek_callback_, |
| 1348 | encoder->private_->file == stdout? 0 : file_tell_callback_, |
| 1349 | /*metadata_callback=*/0, |
| 1350 | client_data, |
| 1351 | is_ogg |
| 1352 | ); |
| 1353 | if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) { |
| 1354 | /* the above function sets the state for us in case of an error */ |
| 1355 | return init_status; |
| 1356 | } |
| 1357 | |
| 1358 | { |
| 1359 | unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder); |
| 1360 | |
| 1361 | FLAC__ASSERT(blocksize != 0); |
| 1362 | encoder->private_->total_frames_estimate = (unsigned)((FLAC__stream_encoder_get_total_samples_estimate(encoder) + blocksize - 1) / blocksize); |
| 1363 | } |
| 1364 | |
| 1365 | return init_status; |
| 1366 | } |
| 1367 | |
| 1368 | FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_FILE( |
| 1369 | FLAC__StreamEncoder *encoder, |
| 1370 | FILE *file, |
| 1371 | FLAC__StreamEncoderProgressCallback progress_callback, |
| 1372 | void *client_data |
| 1373 | ) |
| 1374 | { |
| 1375 | return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/false); |
| 1376 | } |
| 1377 | |
| 1378 | FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_FILE( |
| 1379 | FLAC__StreamEncoder *encoder, |
| 1380 | FILE *file, |
| 1381 | FLAC__StreamEncoderProgressCallback progress_callback, |
| 1382 | void *client_data |
| 1383 | ) |
| 1384 | { |
| 1385 | return init_FILE_internal_(encoder, file, progress_callback, client_data, /*is_ogg=*/true); |
| 1386 | } |
| 1387 | |
| 1388 | static FLAC__StreamEncoderInitStatus init_file_internal_( |
| 1389 | FLAC__StreamEncoder *encoder, |
| 1390 | const char *filename, |
| 1391 | FLAC__StreamEncoderProgressCallback progress_callback, |
| 1392 | void *client_data, |
| 1393 | FLAC__bool is_ogg |
| 1394 | ) |
| 1395 | { |
| 1396 | FILE *file; |
| 1397 | |
| 1398 | FLAC__ASSERT(0 != encoder); |
| 1399 | |
| 1400 | /* |
| 1401 | * To make sure that our file does not go unclosed after an error, we |
| 1402 | * have to do the same entrance checks here that are later performed |
| 1403 | * in FLAC__stream_encoder_init_FILE() before the FILE* is assigned. |
| 1404 | */ |
| 1405 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1406 | return FLAC__STREAM_ENCODER_INIT_STATUS_ALREADY_INITIALIZED; |
| 1407 | |
| 1408 | file = filename? flac_fopen(filename, "w+b") : stdout; |
| 1409 | |
| 1410 | if(file == 0) { |
| 1411 | encoder->protected_->state = FLAC__STREAM_ENCODER_IO_ERROR; |
| 1412 | return FLAC__STREAM_ENCODER_INIT_STATUS_ENCODER_ERROR; |
| 1413 | } |
| 1414 | |
| 1415 | return init_FILE_internal_(encoder, file, progress_callback, client_data, is_ogg); |
| 1416 | } |
| 1417 | |
| 1418 | FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_file( |
| 1419 | FLAC__StreamEncoder *encoder, |
| 1420 | const char *filename, |
| 1421 | FLAC__StreamEncoderProgressCallback progress_callback, |
| 1422 | void *client_data |
| 1423 | ) |
| 1424 | { |
| 1425 | return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/false); |
| 1426 | } |
| 1427 | |
| 1428 | FLAC_API FLAC__StreamEncoderInitStatus FLAC__stream_encoder_init_ogg_file( |
| 1429 | FLAC__StreamEncoder *encoder, |
| 1430 | const char *filename, |
| 1431 | FLAC__StreamEncoderProgressCallback progress_callback, |
| 1432 | void *client_data |
| 1433 | ) |
| 1434 | { |
| 1435 | return init_file_internal_(encoder, filename, progress_callback, client_data, /*is_ogg=*/true); |
| 1436 | } |
| 1437 | |
| 1438 | FLAC_API FLAC__bool FLAC__stream_encoder_finish(FLAC__StreamEncoder *encoder) |
| 1439 | { |
| 1440 | FLAC__bool error = false; |
| 1441 | |
| 1442 | FLAC__ASSERT(0 != encoder); |
| 1443 | FLAC__ASSERT(0 != encoder->private_); |
| 1444 | FLAC__ASSERT(0 != encoder->protected_); |
| 1445 | |
| 1446 | if(encoder->protected_->state == FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1447 | return true; |
| 1448 | |
| 1449 | if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK && !encoder->private_->is_being_deleted) { |
| 1450 | if(encoder->private_->current_sample_number != 0) { |
| 1451 | const FLAC__bool is_fractional_block = encoder->protected_->blocksize != encoder->private_->current_sample_number; |
| 1452 | encoder->protected_->blocksize = encoder->private_->current_sample_number; |
| 1453 | if(!process_frame_(encoder, is_fractional_block, /*is_last_block=*/true)) |
| 1454 | error = true; |
| 1455 | } |
| 1456 | } |
| 1457 | |
| 1458 | if(encoder->protected_->do_md5) |
| 1459 | FLAC__MD5Final(encoder->private_->streaminfo.data.stream_info.md5sum, &encoder->private_->md5context); |
| 1460 | |
| 1461 | if(!encoder->private_->is_being_deleted) { |
| 1462 | if(encoder->protected_->state == FLAC__STREAM_ENCODER_OK) { |
| 1463 | if(encoder->private_->seek_callback) { |
| 1464 | #if FLAC__HAS_OGG |
| 1465 | if(encoder->private_->is_ogg) |
| 1466 | update_ogg_metadata_(encoder); |
| 1467 | else |
| 1468 | #endif |
| 1469 | update_metadata_(encoder); |
| 1470 | |
| 1471 | /* check if an error occurred while updating metadata */ |
| 1472 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_OK) |
| 1473 | error = true; |
| 1474 | } |
| 1475 | if(encoder->private_->metadata_callback) |
| 1476 | encoder->private_->metadata_callback(encoder, &encoder->private_->streaminfo, encoder->private_->client_data); |
| 1477 | } |
| 1478 | |
| 1479 | if(encoder->protected_->verify && 0 != encoder->private_->verify.decoder && !FLAC__stream_decoder_finish(encoder->private_->verify.decoder)) { |
| 1480 | if(!error) |
| 1481 | encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA; |
| 1482 | error = true; |
| 1483 | } |
| 1484 | } |
| 1485 | |
| 1486 | if(0 != encoder->private_->file) { |
| 1487 | if(encoder->private_->file != stdout) |
| 1488 | fclose(encoder->private_->file); |
| 1489 | encoder->private_->file = 0; |
| 1490 | } |
| 1491 | |
| 1492 | #if FLAC__HAS_OGG |
| 1493 | if(encoder->private_->is_ogg) |
| 1494 | FLAC__ogg_encoder_aspect_finish(&encoder->protected_->ogg_encoder_aspect); |
| 1495 | #endif |
| 1496 | |
| 1497 | free_(encoder); |
| 1498 | set_defaults_(encoder); |
| 1499 | |
| 1500 | if(!error) |
| 1501 | encoder->protected_->state = FLAC__STREAM_ENCODER_UNINITIALIZED; |
| 1502 | |
| 1503 | return !error; |
| 1504 | } |
| 1505 | |
| 1506 | FLAC_API FLAC__bool FLAC__stream_encoder_set_ogg_serial_number(FLAC__StreamEncoder *encoder, long value) |
| 1507 | { |
| 1508 | FLAC__ASSERT(0 != encoder); |
| 1509 | FLAC__ASSERT(0 != encoder->private_); |
| 1510 | FLAC__ASSERT(0 != encoder->protected_); |
| 1511 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1512 | return false; |
| 1513 | #if FLAC__HAS_OGG |
| 1514 | /* can't check encoder->private_->is_ogg since that's not set until init time */ |
| 1515 | FLAC__ogg_encoder_aspect_set_serial_number(&encoder->protected_->ogg_encoder_aspect, value); |
| 1516 | return true; |
| 1517 | #else |
| 1518 | (void)value; |
| 1519 | return false; |
| 1520 | #endif |
| 1521 | } |
| 1522 | |
| 1523 | FLAC_API FLAC__bool FLAC__stream_encoder_set_verify(FLAC__StreamEncoder *encoder, FLAC__bool value) |
| 1524 | { |
| 1525 | FLAC__ASSERT(0 != encoder); |
| 1526 | FLAC__ASSERT(0 != encoder->private_); |
| 1527 | FLAC__ASSERT(0 != encoder->protected_); |
| 1528 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1529 | return false; |
| 1530 | #ifndef FLAC__MANDATORY_VERIFY_WHILE_ENCODING |
| 1531 | encoder->protected_->verify = value; |
| 1532 | #endif |
| 1533 | return true; |
| 1534 | } |
| 1535 | |
| 1536 | FLAC_API FLAC__bool FLAC__stream_encoder_set_streamable_subset(FLAC__StreamEncoder *encoder, FLAC__bool value) |
| 1537 | { |
| 1538 | FLAC__ASSERT(0 != encoder); |
| 1539 | FLAC__ASSERT(0 != encoder->private_); |
| 1540 | FLAC__ASSERT(0 != encoder->protected_); |
| 1541 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1542 | return false; |
| 1543 | encoder->protected_->streamable_subset = value; |
| 1544 | return true; |
| 1545 | } |
| 1546 | |
| 1547 | FLAC_API FLAC__bool FLAC__stream_encoder_set_do_md5(FLAC__StreamEncoder *encoder, FLAC__bool value) |
| 1548 | { |
| 1549 | FLAC__ASSERT(0 != encoder); |
| 1550 | FLAC__ASSERT(0 != encoder->private_); |
| 1551 | FLAC__ASSERT(0 != encoder->protected_); |
| 1552 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1553 | return false; |
| 1554 | encoder->protected_->do_md5 = value; |
| 1555 | return true; |
| 1556 | } |
| 1557 | |
| 1558 | FLAC_API FLAC__bool FLAC__stream_encoder_set_channels(FLAC__StreamEncoder *encoder, unsigned value) |
| 1559 | { |
| 1560 | FLAC__ASSERT(0 != encoder); |
| 1561 | FLAC__ASSERT(0 != encoder->private_); |
| 1562 | FLAC__ASSERT(0 != encoder->protected_); |
| 1563 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1564 | return false; |
| 1565 | encoder->protected_->channels = value; |
| 1566 | return true; |
| 1567 | } |
| 1568 | |
| 1569 | FLAC_API FLAC__bool FLAC__stream_encoder_set_bits_per_sample(FLAC__StreamEncoder *encoder, unsigned value) |
| 1570 | { |
| 1571 | FLAC__ASSERT(0 != encoder); |
| 1572 | FLAC__ASSERT(0 != encoder->private_); |
| 1573 | FLAC__ASSERT(0 != encoder->protected_); |
| 1574 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1575 | return false; |
| 1576 | encoder->protected_->bits_per_sample = value; |
| 1577 | return true; |
| 1578 | } |
| 1579 | |
| 1580 | FLAC_API FLAC__bool FLAC__stream_encoder_set_sample_rate(FLAC__StreamEncoder *encoder, unsigned value) |
| 1581 | { |
| 1582 | FLAC__ASSERT(0 != encoder); |
| 1583 | FLAC__ASSERT(0 != encoder->private_); |
| 1584 | FLAC__ASSERT(0 != encoder->protected_); |
| 1585 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1586 | return false; |
| 1587 | encoder->protected_->sample_rate = value; |
| 1588 | return true; |
| 1589 | } |
| 1590 | |
| 1591 | FLAC_API FLAC__bool FLAC__stream_encoder_set_compression_level(FLAC__StreamEncoder *encoder, unsigned value) |
| 1592 | { |
| 1593 | FLAC__bool ok = true; |
| 1594 | FLAC__ASSERT(0 != encoder); |
| 1595 | FLAC__ASSERT(0 != encoder->private_); |
| 1596 | FLAC__ASSERT(0 != encoder->protected_); |
| 1597 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1598 | return false; |
| 1599 | if(value >= sizeof(compression_levels_)/sizeof(compression_levels_[0])) |
| 1600 | value = sizeof(compression_levels_)/sizeof(compression_levels_[0]) - 1; |
| 1601 | ok &= FLAC__stream_encoder_set_do_mid_side_stereo (encoder, compression_levels_[value].do_mid_side_stereo); |
| 1602 | ok &= FLAC__stream_encoder_set_loose_mid_side_stereo (encoder, compression_levels_[value].loose_mid_side_stereo); |
| 1603 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 1604 | #if 1 |
| 1605 | ok &= FLAC__stream_encoder_set_apodization (encoder, compression_levels_[value].apodization); |
| 1606 | #else |
| 1607 | /* equivalent to -A tukey(0.5) */ |
| 1608 | encoder->protected_->num_apodizations = 1; |
| 1609 | encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY; |
| 1610 | encoder->protected_->apodizations[0].parameters.tukey.p = 0.5; |
| 1611 | #endif |
| 1612 | #endif |
| 1613 | ok &= FLAC__stream_encoder_set_max_lpc_order (encoder, compression_levels_[value].max_lpc_order); |
| 1614 | ok &= FLAC__stream_encoder_set_qlp_coeff_precision (encoder, compression_levels_[value].qlp_coeff_precision); |
| 1615 | ok &= FLAC__stream_encoder_set_do_qlp_coeff_prec_search (encoder, compression_levels_[value].do_qlp_coeff_prec_search); |
| 1616 | ok &= FLAC__stream_encoder_set_do_escape_coding (encoder, compression_levels_[value].do_escape_coding); |
| 1617 | ok &= FLAC__stream_encoder_set_do_exhaustive_model_search (encoder, compression_levels_[value].do_exhaustive_model_search); |
| 1618 | ok &= FLAC__stream_encoder_set_min_residual_partition_order(encoder, compression_levels_[value].min_residual_partition_order); |
| 1619 | ok &= FLAC__stream_encoder_set_max_residual_partition_order(encoder, compression_levels_[value].max_residual_partition_order); |
| 1620 | ok &= FLAC__stream_encoder_set_rice_parameter_search_dist (encoder, compression_levels_[value].rice_parameter_search_dist); |
| 1621 | return ok; |
| 1622 | } |
| 1623 | |
| 1624 | FLAC_API FLAC__bool FLAC__stream_encoder_set_blocksize(FLAC__StreamEncoder *encoder, unsigned value) |
| 1625 | { |
| 1626 | FLAC__ASSERT(0 != encoder); |
| 1627 | FLAC__ASSERT(0 != encoder->private_); |
| 1628 | FLAC__ASSERT(0 != encoder->protected_); |
| 1629 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1630 | return false; |
| 1631 | encoder->protected_->blocksize = value; |
| 1632 | return true; |
| 1633 | } |
| 1634 | |
| 1635 | FLAC_API FLAC__bool FLAC__stream_encoder_set_do_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value) |
| 1636 | { |
| 1637 | FLAC__ASSERT(0 != encoder); |
| 1638 | FLAC__ASSERT(0 != encoder->private_); |
| 1639 | FLAC__ASSERT(0 != encoder->protected_); |
| 1640 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1641 | return false; |
| 1642 | encoder->protected_->do_mid_side_stereo = value; |
| 1643 | return true; |
| 1644 | } |
| 1645 | |
| 1646 | FLAC_API FLAC__bool FLAC__stream_encoder_set_loose_mid_side_stereo(FLAC__StreamEncoder *encoder, FLAC__bool value) |
| 1647 | { |
| 1648 | FLAC__ASSERT(0 != encoder); |
| 1649 | FLAC__ASSERT(0 != encoder->private_); |
| 1650 | FLAC__ASSERT(0 != encoder->protected_); |
| 1651 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1652 | return false; |
| 1653 | encoder->protected_->loose_mid_side_stereo = value; |
| 1654 | return true; |
| 1655 | } |
| 1656 | |
| 1657 | /*@@@@add to tests*/ |
| 1658 | FLAC_API FLAC__bool FLAC__stream_encoder_set_apodization(FLAC__StreamEncoder *encoder, const char *specification) |
| 1659 | { |
| 1660 | FLAC__ASSERT(0 != encoder); |
| 1661 | FLAC__ASSERT(0 != encoder->private_); |
| 1662 | FLAC__ASSERT(0 != encoder->protected_); |
| 1663 | FLAC__ASSERT(0 != specification); |
| 1664 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1665 | return false; |
| 1666 | #ifdef FLAC__INTEGER_ONLY_LIBRARY |
| 1667 | (void)specification; /* silently ignore since we haven't integerized; will always use a rectangular window */ |
| 1668 | #else |
| 1669 | encoder->protected_->num_apodizations = 0; |
| 1670 | while(1) { |
| 1671 | const char *s = strchr(specification, ';'); |
| 1672 | const size_t n = s? (size_t)(s - specification) : strlen(specification); |
| 1673 | if (n==8 && 0 == strncmp("bartlett" , specification, n)) |
| 1674 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT; |
| 1675 | else if(n==13 && 0 == strncmp("bartlett_hann", specification, n)) |
| 1676 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BARTLETT_HANN; |
| 1677 | else if(n==8 && 0 == strncmp("blackman" , specification, n)) |
| 1678 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN; |
| 1679 | else if(n==26 && 0 == strncmp("blackman_harris_4term_92db", specification, n)) |
| 1680 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE; |
| 1681 | else if(n==6 && 0 == strncmp("connes" , specification, n)) |
| 1682 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_CONNES; |
| 1683 | else if(n==7 && 0 == strncmp("flattop" , specification, n)) |
| 1684 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_FLATTOP; |
| 1685 | else if(n>7 && 0 == strncmp("gauss(" , specification, 6)) { |
| 1686 | FLAC__real stddev = (FLAC__real)strtod(specification+6, 0); |
| 1687 | if (stddev > 0.0 && stddev <= 0.5) { |
| 1688 | encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.gauss.stddev = stddev; |
| 1689 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_GAUSS; |
| 1690 | } |
| 1691 | } |
| 1692 | else if(n==7 && 0 == strncmp("hamming" , specification, n)) |
| 1693 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HAMMING; |
| 1694 | else if(n==4 && 0 == strncmp("hann" , specification, n)) |
| 1695 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_HANN; |
| 1696 | else if(n==13 && 0 == strncmp("kaiser_bessel", specification, n)) |
| 1697 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_KAISER_BESSEL; |
| 1698 | else if(n==7 && 0 == strncmp("nuttall" , specification, n)) |
| 1699 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_NUTTALL; |
| 1700 | else if(n==9 && 0 == strncmp("rectangle" , specification, n)) |
| 1701 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_RECTANGLE; |
| 1702 | else if(n==8 && 0 == strncmp("triangle" , specification, n)) |
| 1703 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TRIANGLE; |
| 1704 | else if(n>7 && 0 == strncmp("tukey(" , specification, 6)) { |
| 1705 | FLAC__real p = (FLAC__real)strtod(specification+6, 0); |
| 1706 | if (p >= 0.0 && p <= 1.0) { |
| 1707 | encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.tukey.p = p; |
| 1708 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TUKEY; |
| 1709 | } |
| 1710 | } |
| 1711 | else if(n>15 && 0 == strncmp("partial_tukey(" , specification, 14)) { |
| 1712 | FLAC__int32 tukey_parts = (FLAC__int32)strtod(specification+14, 0); |
| 1713 | const char *si_1 = strchr(specification, '/'); |
| 1714 | FLAC__real overlap = si_1?flac_min((FLAC__real)strtod(si_1+1, 0),0.99f):0.1f; |
| 1715 | FLAC__real overlap_units = 1.0f/(1.0f - overlap) - 1.0f; |
| 1716 | const char *si_2 = strchr((si_1?(si_1+1):specification), '/'); |
| 1717 | FLAC__real tukey_p = si_2?(FLAC__real)strtod(si_2+1, 0):0.2f; |
| 1718 | |
| 1719 | if (tukey_parts <= 1) { |
| 1720 | encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.tukey.p = tukey_p; |
| 1721 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TUKEY; |
| 1722 | }else if (encoder->protected_->num_apodizations + tukey_parts < 32){ |
| 1723 | FLAC__int32 m; |
| 1724 | for(m = 0; m < tukey_parts; m++){ |
| 1725 | encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.multiple_tukey.p = tukey_p; |
| 1726 | encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.multiple_tukey.start = m/(tukey_parts+overlap_units); |
| 1727 | encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.multiple_tukey.end = (m+1+overlap_units)/(tukey_parts+overlap_units); |
| 1728 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_PARTIAL_TUKEY; |
| 1729 | } |
| 1730 | } |
| 1731 | } |
| 1732 | else if(n>16 && 0 == strncmp("punchout_tukey(" , specification, 15)) { |
| 1733 | FLAC__int32 tukey_parts = (FLAC__int32)strtod(specification+15, 0); |
| 1734 | const char *si_1 = strchr(specification, '/'); |
| 1735 | FLAC__real overlap = si_1?flac_min((FLAC__real)strtod(si_1+1, 0),0.99f):0.2f; |
| 1736 | FLAC__real overlap_units = 1.0f/(1.0f - overlap) - 1.0f; |
| 1737 | const char *si_2 = strchr((si_1?(si_1+1):specification), '/'); |
| 1738 | FLAC__real tukey_p = si_2?(FLAC__real)strtod(si_2+1, 0):0.2f; |
| 1739 | |
| 1740 | if (tukey_parts <= 1) { |
| 1741 | encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.tukey.p = tukey_p; |
| 1742 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_TUKEY; |
| 1743 | }else if (encoder->protected_->num_apodizations + tukey_parts < 32){ |
| 1744 | FLAC__int32 m; |
| 1745 | for(m = 0; m < tukey_parts; m++){ |
| 1746 | encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.multiple_tukey.p = tukey_p; |
| 1747 | encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.multiple_tukey.start = m/(tukey_parts+overlap_units); |
| 1748 | encoder->protected_->apodizations[encoder->protected_->num_apodizations].parameters.multiple_tukey.end = (m+1+overlap_units)/(tukey_parts+overlap_units); |
| 1749 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_PUNCHOUT_TUKEY; |
| 1750 | } |
| 1751 | } |
| 1752 | } |
| 1753 | else if(n==5 && 0 == strncmp("welch" , specification, n)) |
| 1754 | encoder->protected_->apodizations[encoder->protected_->num_apodizations++].type = FLAC__APODIZATION_WELCH; |
| 1755 | if (encoder->protected_->num_apodizations == 32) |
| 1756 | break; |
| 1757 | if (s) |
| 1758 | specification = s+1; |
| 1759 | else |
| 1760 | break; |
| 1761 | } |
| 1762 | if(encoder->protected_->num_apodizations == 0) { |
| 1763 | encoder->protected_->num_apodizations = 1; |
| 1764 | encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY; |
| 1765 | encoder->protected_->apodizations[0].parameters.tukey.p = 0.5; |
| 1766 | } |
| 1767 | #endif |
| 1768 | return true; |
| 1769 | } |
| 1770 | |
| 1771 | FLAC_API FLAC__bool FLAC__stream_encoder_set_max_lpc_order(FLAC__StreamEncoder *encoder, unsigned value) |
| 1772 | { |
| 1773 | FLAC__ASSERT(0 != encoder); |
| 1774 | FLAC__ASSERT(0 != encoder->private_); |
| 1775 | FLAC__ASSERT(0 != encoder->protected_); |
| 1776 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1777 | return false; |
| 1778 | encoder->protected_->max_lpc_order = value; |
| 1779 | return true; |
| 1780 | } |
| 1781 | |
| 1782 | FLAC_API FLAC__bool FLAC__stream_encoder_set_qlp_coeff_precision(FLAC__StreamEncoder *encoder, unsigned value) |
| 1783 | { |
| 1784 | FLAC__ASSERT(0 != encoder); |
| 1785 | FLAC__ASSERT(0 != encoder->private_); |
| 1786 | FLAC__ASSERT(0 != encoder->protected_); |
| 1787 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1788 | return false; |
| 1789 | encoder->protected_->qlp_coeff_precision = value; |
| 1790 | return true; |
| 1791 | } |
| 1792 | |
| 1793 | FLAC_API FLAC__bool FLAC__stream_encoder_set_do_qlp_coeff_prec_search(FLAC__StreamEncoder *encoder, FLAC__bool value) |
| 1794 | { |
| 1795 | FLAC__ASSERT(0 != encoder); |
| 1796 | FLAC__ASSERT(0 != encoder->private_); |
| 1797 | FLAC__ASSERT(0 != encoder->protected_); |
| 1798 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1799 | return false; |
| 1800 | encoder->protected_->do_qlp_coeff_prec_search = value; |
| 1801 | return true; |
| 1802 | } |
| 1803 | |
| 1804 | FLAC_API FLAC__bool FLAC__stream_encoder_set_do_escape_coding(FLAC__StreamEncoder *encoder, FLAC__bool value) |
| 1805 | { |
| 1806 | FLAC__ASSERT(0 != encoder); |
| 1807 | FLAC__ASSERT(0 != encoder->private_); |
| 1808 | FLAC__ASSERT(0 != encoder->protected_); |
| 1809 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1810 | return false; |
| 1811 | #if 0 |
| 1812 | /*@@@ deprecated: */ |
| 1813 | encoder->protected_->do_escape_coding = value; |
| 1814 | #else |
| 1815 | (void)value; |
| 1816 | #endif |
| 1817 | return true; |
| 1818 | } |
| 1819 | |
| 1820 | FLAC_API FLAC__bool FLAC__stream_encoder_set_do_exhaustive_model_search(FLAC__StreamEncoder *encoder, FLAC__bool value) |
| 1821 | { |
| 1822 | FLAC__ASSERT(0 != encoder); |
| 1823 | FLAC__ASSERT(0 != encoder->private_); |
| 1824 | FLAC__ASSERT(0 != encoder->protected_); |
| 1825 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1826 | return false; |
| 1827 | encoder->protected_->do_exhaustive_model_search = value; |
| 1828 | return true; |
| 1829 | } |
| 1830 | |
| 1831 | FLAC_API FLAC__bool FLAC__stream_encoder_set_min_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value) |
| 1832 | { |
| 1833 | FLAC__ASSERT(0 != encoder); |
| 1834 | FLAC__ASSERT(0 != encoder->private_); |
| 1835 | FLAC__ASSERT(0 != encoder->protected_); |
| 1836 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1837 | return false; |
| 1838 | encoder->protected_->min_residual_partition_order = value; |
| 1839 | return true; |
| 1840 | } |
| 1841 | |
| 1842 | FLAC_API FLAC__bool FLAC__stream_encoder_set_max_residual_partition_order(FLAC__StreamEncoder *encoder, unsigned value) |
| 1843 | { |
| 1844 | FLAC__ASSERT(0 != encoder); |
| 1845 | FLAC__ASSERT(0 != encoder->private_); |
| 1846 | FLAC__ASSERT(0 != encoder->protected_); |
| 1847 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1848 | return false; |
| 1849 | encoder->protected_->max_residual_partition_order = value; |
| 1850 | return true; |
| 1851 | } |
| 1852 | |
| 1853 | FLAC_API FLAC__bool FLAC__stream_encoder_set_rice_parameter_search_dist(FLAC__StreamEncoder *encoder, unsigned value) |
| 1854 | { |
| 1855 | FLAC__ASSERT(0 != encoder); |
| 1856 | FLAC__ASSERT(0 != encoder->private_); |
| 1857 | FLAC__ASSERT(0 != encoder->protected_); |
| 1858 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1859 | return false; |
| 1860 | #if 0 |
| 1861 | /*@@@ deprecated: */ |
| 1862 | encoder->protected_->rice_parameter_search_dist = value; |
| 1863 | #else |
| 1864 | (void)value; |
| 1865 | #endif |
| 1866 | return true; |
| 1867 | } |
| 1868 | |
| 1869 | FLAC_API FLAC__bool FLAC__stream_encoder_set_total_samples_estimate(FLAC__StreamEncoder *encoder, FLAC__uint64 value) |
| 1870 | { |
| 1871 | FLAC__ASSERT(0 != encoder); |
| 1872 | FLAC__ASSERT(0 != encoder->private_); |
| 1873 | FLAC__ASSERT(0 != encoder->protected_); |
| 1874 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1875 | return false; |
| 1876 | value = flac_min(value, (FLAC__U64L(1) << FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN) - 1); |
| 1877 | encoder->protected_->total_samples_estimate = value; |
| 1878 | return true; |
| 1879 | } |
| 1880 | |
| 1881 | FLAC_API FLAC__bool FLAC__stream_encoder_set_metadata(FLAC__StreamEncoder *encoder, FLAC__StreamMetadata **metadata, unsigned num_blocks) |
| 1882 | { |
| 1883 | FLAC__ASSERT(0 != encoder); |
| 1884 | FLAC__ASSERT(0 != encoder->private_); |
| 1885 | FLAC__ASSERT(0 != encoder->protected_); |
| 1886 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1887 | return false; |
| 1888 | if(0 == metadata) |
| 1889 | num_blocks = 0; |
| 1890 | if(0 == num_blocks) |
| 1891 | metadata = 0; |
| 1892 | /* realloc() does not do exactly what we want so... */ |
| 1893 | if(encoder->protected_->metadata) { |
| 1894 | free(encoder->protected_->metadata); |
| 1895 | encoder->protected_->metadata = 0; |
| 1896 | encoder->protected_->num_metadata_blocks = 0; |
| 1897 | } |
| 1898 | if(num_blocks) { |
| 1899 | FLAC__StreamMetadata **m; |
| 1900 | if(0 == (m = safe_malloc_mul_2op_p(sizeof(m[0]), /*times*/num_blocks))) |
| 1901 | return false; |
| 1902 | memcpy(m, metadata, sizeof(m[0]) * num_blocks); |
| 1903 | encoder->protected_->metadata = m; |
| 1904 | encoder->protected_->num_metadata_blocks = num_blocks; |
| 1905 | } |
| 1906 | #if FLAC__HAS_OGG |
| 1907 | if(!FLAC__ogg_encoder_aspect_set_num_metadata(&encoder->protected_->ogg_encoder_aspect, num_blocks)) |
| 1908 | return false; |
| 1909 | #endif |
| 1910 | return true; |
| 1911 | } |
| 1912 | |
| 1913 | /* |
| 1914 | * These three functions are not static, but not publically exposed in |
| 1915 | * include/FLAC/ either. They are used by the test suite. |
| 1916 | */ |
| 1917 | FLAC_API FLAC__bool FLAC__stream_encoder_disable_constant_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value) |
| 1918 | { |
| 1919 | FLAC__ASSERT(0 != encoder); |
| 1920 | FLAC__ASSERT(0 != encoder->private_); |
| 1921 | FLAC__ASSERT(0 != encoder->protected_); |
| 1922 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1923 | return false; |
| 1924 | encoder->private_->disable_constant_subframes = value; |
| 1925 | return true; |
| 1926 | } |
| 1927 | |
| 1928 | FLAC_API FLAC__bool FLAC__stream_encoder_disable_fixed_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value) |
| 1929 | { |
| 1930 | FLAC__ASSERT(0 != encoder); |
| 1931 | FLAC__ASSERT(0 != encoder->private_); |
| 1932 | FLAC__ASSERT(0 != encoder->protected_); |
| 1933 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1934 | return false; |
| 1935 | encoder->private_->disable_fixed_subframes = value; |
| 1936 | return true; |
| 1937 | } |
| 1938 | |
| 1939 | FLAC_API FLAC__bool FLAC__stream_encoder_disable_verbatim_subframes(FLAC__StreamEncoder *encoder, FLAC__bool value) |
| 1940 | { |
| 1941 | FLAC__ASSERT(0 != encoder); |
| 1942 | FLAC__ASSERT(0 != encoder->private_); |
| 1943 | FLAC__ASSERT(0 != encoder->protected_); |
| 1944 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_UNINITIALIZED) |
| 1945 | return false; |
| 1946 | encoder->private_->disable_verbatim_subframes = value; |
| 1947 | return true; |
| 1948 | } |
| 1949 | |
| 1950 | FLAC_API FLAC__StreamEncoderState FLAC__stream_encoder_get_state(const FLAC__StreamEncoder *encoder) |
| 1951 | { |
| 1952 | FLAC__ASSERT(0 != encoder); |
| 1953 | FLAC__ASSERT(0 != encoder->private_); |
| 1954 | FLAC__ASSERT(0 != encoder->protected_); |
| 1955 | return encoder->protected_->state; |
| 1956 | } |
| 1957 | |
| 1958 | FLAC_API FLAC__StreamDecoderState FLAC__stream_encoder_get_verify_decoder_state(const FLAC__StreamEncoder *encoder) |
| 1959 | { |
| 1960 | FLAC__ASSERT(0 != encoder); |
| 1961 | FLAC__ASSERT(0 != encoder->private_); |
| 1962 | FLAC__ASSERT(0 != encoder->protected_); |
| 1963 | if(encoder->protected_->verify) |
| 1964 | return FLAC__stream_decoder_get_state(encoder->private_->verify.decoder); |
| 1965 | else |
| 1966 | return FLAC__STREAM_DECODER_UNINITIALIZED; |
| 1967 | } |
| 1968 | |
| 1969 | FLAC_API const char *FLAC__stream_encoder_get_resolved_state_string(const FLAC__StreamEncoder *encoder) |
| 1970 | { |
| 1971 | FLAC__ASSERT(0 != encoder); |
| 1972 | FLAC__ASSERT(0 != encoder->private_); |
| 1973 | FLAC__ASSERT(0 != encoder->protected_); |
| 1974 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR) |
| 1975 | return FLAC__StreamEncoderStateString[encoder->protected_->state]; |
| 1976 | else |
| 1977 | return FLAC__stream_decoder_get_resolved_state_string(encoder->private_->verify.decoder); |
| 1978 | } |
| 1979 | |
| 1980 | FLAC_API void FLAC__stream_encoder_get_verify_decoder_error_stats(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_sample, unsigned *frame_number, unsigned *channel, unsigned *sample, FLAC__int32 *expected, FLAC__int32 *got) |
| 1981 | { |
| 1982 | FLAC__ASSERT(0 != encoder); |
| 1983 | FLAC__ASSERT(0 != encoder->private_); |
| 1984 | FLAC__ASSERT(0 != encoder->protected_); |
| 1985 | if(0 != absolute_sample) |
| 1986 | *absolute_sample = encoder->private_->verify.error_stats.absolute_sample; |
| 1987 | if(0 != frame_number) |
| 1988 | *frame_number = encoder->private_->verify.error_stats.frame_number; |
| 1989 | if(0 != channel) |
| 1990 | *channel = encoder->private_->verify.error_stats.channel; |
| 1991 | if(0 != sample) |
| 1992 | *sample = encoder->private_->verify.error_stats.sample; |
| 1993 | if(0 != expected) |
| 1994 | *expected = encoder->private_->verify.error_stats.expected; |
| 1995 | if(0 != got) |
| 1996 | *got = encoder->private_->verify.error_stats.got; |
| 1997 | } |
| 1998 | |
| 1999 | FLAC_API FLAC__bool FLAC__stream_encoder_get_verify(const FLAC__StreamEncoder *encoder) |
| 2000 | { |
| 2001 | FLAC__ASSERT(0 != encoder); |
| 2002 | FLAC__ASSERT(0 != encoder->private_); |
| 2003 | FLAC__ASSERT(0 != encoder->protected_); |
| 2004 | return encoder->protected_->verify; |
| 2005 | } |
| 2006 | |
| 2007 | FLAC_API FLAC__bool FLAC__stream_encoder_get_streamable_subset(const FLAC__StreamEncoder *encoder) |
| 2008 | { |
| 2009 | FLAC__ASSERT(0 != encoder); |
| 2010 | FLAC__ASSERT(0 != encoder->private_); |
| 2011 | FLAC__ASSERT(0 != encoder->protected_); |
| 2012 | return encoder->protected_->streamable_subset; |
| 2013 | } |
| 2014 | |
| 2015 | FLAC_API FLAC__bool FLAC__stream_encoder_get_do_md5(const FLAC__StreamEncoder *encoder) |
| 2016 | { |
| 2017 | FLAC__ASSERT(0 != encoder); |
| 2018 | FLAC__ASSERT(0 != encoder->private_); |
| 2019 | FLAC__ASSERT(0 != encoder->protected_); |
| 2020 | return encoder->protected_->do_md5; |
| 2021 | } |
| 2022 | |
| 2023 | FLAC_API unsigned FLAC__stream_encoder_get_channels(const FLAC__StreamEncoder *encoder) |
| 2024 | { |
| 2025 | FLAC__ASSERT(0 != encoder); |
| 2026 | FLAC__ASSERT(0 != encoder->private_); |
| 2027 | FLAC__ASSERT(0 != encoder->protected_); |
| 2028 | return encoder->protected_->channels; |
| 2029 | } |
| 2030 | |
| 2031 | FLAC_API unsigned FLAC__stream_encoder_get_bits_per_sample(const FLAC__StreamEncoder *encoder) |
| 2032 | { |
| 2033 | FLAC__ASSERT(0 != encoder); |
| 2034 | FLAC__ASSERT(0 != encoder->private_); |
| 2035 | FLAC__ASSERT(0 != encoder->protected_); |
| 2036 | return encoder->protected_->bits_per_sample; |
| 2037 | } |
| 2038 | |
| 2039 | FLAC_API unsigned FLAC__stream_encoder_get_sample_rate(const FLAC__StreamEncoder *encoder) |
| 2040 | { |
| 2041 | FLAC__ASSERT(0 != encoder); |
| 2042 | FLAC__ASSERT(0 != encoder->private_); |
| 2043 | FLAC__ASSERT(0 != encoder->protected_); |
| 2044 | return encoder->protected_->sample_rate; |
| 2045 | } |
| 2046 | |
| 2047 | FLAC_API unsigned FLAC__stream_encoder_get_blocksize(const FLAC__StreamEncoder *encoder) |
| 2048 | { |
| 2049 | FLAC__ASSERT(0 != encoder); |
| 2050 | FLAC__ASSERT(0 != encoder->private_); |
| 2051 | FLAC__ASSERT(0 != encoder->protected_); |
| 2052 | return encoder->protected_->blocksize; |
| 2053 | } |
| 2054 | |
| 2055 | FLAC_API FLAC__bool FLAC__stream_encoder_get_do_mid_side_stereo(const FLAC__StreamEncoder *encoder) |
| 2056 | { |
| 2057 | FLAC__ASSERT(0 != encoder); |
| 2058 | FLAC__ASSERT(0 != encoder->private_); |
| 2059 | FLAC__ASSERT(0 != encoder->protected_); |
| 2060 | return encoder->protected_->do_mid_side_stereo; |
| 2061 | } |
| 2062 | |
| 2063 | FLAC_API FLAC__bool FLAC__stream_encoder_get_loose_mid_side_stereo(const FLAC__StreamEncoder *encoder) |
| 2064 | { |
| 2065 | FLAC__ASSERT(0 != encoder); |
| 2066 | FLAC__ASSERT(0 != encoder->private_); |
| 2067 | FLAC__ASSERT(0 != encoder->protected_); |
| 2068 | return encoder->protected_->loose_mid_side_stereo; |
| 2069 | } |
| 2070 | |
| 2071 | FLAC_API unsigned FLAC__stream_encoder_get_max_lpc_order(const FLAC__StreamEncoder *encoder) |
| 2072 | { |
| 2073 | FLAC__ASSERT(0 != encoder); |
| 2074 | FLAC__ASSERT(0 != encoder->private_); |
| 2075 | FLAC__ASSERT(0 != encoder->protected_); |
| 2076 | return encoder->protected_->max_lpc_order; |
| 2077 | } |
| 2078 | |
| 2079 | FLAC_API unsigned FLAC__stream_encoder_get_qlp_coeff_precision(const FLAC__StreamEncoder *encoder) |
| 2080 | { |
| 2081 | FLAC__ASSERT(0 != encoder); |
| 2082 | FLAC__ASSERT(0 != encoder->private_); |
| 2083 | FLAC__ASSERT(0 != encoder->protected_); |
| 2084 | return encoder->protected_->qlp_coeff_precision; |
| 2085 | } |
| 2086 | |
| 2087 | FLAC_API FLAC__bool FLAC__stream_encoder_get_do_qlp_coeff_prec_search(const FLAC__StreamEncoder *encoder) |
| 2088 | { |
| 2089 | FLAC__ASSERT(0 != encoder); |
| 2090 | FLAC__ASSERT(0 != encoder->private_); |
| 2091 | FLAC__ASSERT(0 != encoder->protected_); |
| 2092 | return encoder->protected_->do_qlp_coeff_prec_search; |
| 2093 | } |
| 2094 | |
| 2095 | FLAC_API FLAC__bool FLAC__stream_encoder_get_do_escape_coding(const FLAC__StreamEncoder *encoder) |
| 2096 | { |
| 2097 | FLAC__ASSERT(0 != encoder); |
| 2098 | FLAC__ASSERT(0 != encoder->private_); |
| 2099 | FLAC__ASSERT(0 != encoder->protected_); |
| 2100 | return encoder->protected_->do_escape_coding; |
| 2101 | } |
| 2102 | |
| 2103 | FLAC_API FLAC__bool FLAC__stream_encoder_get_do_exhaustive_model_search(const FLAC__StreamEncoder *encoder) |
| 2104 | { |
| 2105 | FLAC__ASSERT(0 != encoder); |
| 2106 | FLAC__ASSERT(0 != encoder->private_); |
| 2107 | FLAC__ASSERT(0 != encoder->protected_); |
| 2108 | return encoder->protected_->do_exhaustive_model_search; |
| 2109 | } |
| 2110 | |
| 2111 | FLAC_API unsigned FLAC__stream_encoder_get_min_residual_partition_order(const FLAC__StreamEncoder *encoder) |
| 2112 | { |
| 2113 | FLAC__ASSERT(0 != encoder); |
| 2114 | FLAC__ASSERT(0 != encoder->private_); |
| 2115 | FLAC__ASSERT(0 != encoder->protected_); |
| 2116 | return encoder->protected_->min_residual_partition_order; |
| 2117 | } |
| 2118 | |
| 2119 | FLAC_API unsigned FLAC__stream_encoder_get_max_residual_partition_order(const FLAC__StreamEncoder *encoder) |
| 2120 | { |
| 2121 | FLAC__ASSERT(0 != encoder); |
| 2122 | FLAC__ASSERT(0 != encoder->private_); |
| 2123 | FLAC__ASSERT(0 != encoder->protected_); |
| 2124 | return encoder->protected_->max_residual_partition_order; |
| 2125 | } |
| 2126 | |
| 2127 | FLAC_API unsigned FLAC__stream_encoder_get_rice_parameter_search_dist(const FLAC__StreamEncoder *encoder) |
| 2128 | { |
| 2129 | FLAC__ASSERT(0 != encoder); |
| 2130 | FLAC__ASSERT(0 != encoder->private_); |
| 2131 | FLAC__ASSERT(0 != encoder->protected_); |
| 2132 | return encoder->protected_->rice_parameter_search_dist; |
| 2133 | } |
| 2134 | |
| 2135 | FLAC_API FLAC__uint64 FLAC__stream_encoder_get_total_samples_estimate(const FLAC__StreamEncoder *encoder) |
| 2136 | { |
| 2137 | FLAC__ASSERT(0 != encoder); |
| 2138 | FLAC__ASSERT(0 != encoder->private_); |
| 2139 | FLAC__ASSERT(0 != encoder->protected_); |
| 2140 | return encoder->protected_->total_samples_estimate; |
| 2141 | } |
| 2142 | |
| 2143 | FLAC_API FLAC__bool FLAC__stream_encoder_process(FLAC__StreamEncoder *encoder, const FLAC__int32 * const buffer[], unsigned samples) |
| 2144 | { |
| 2145 | unsigned i, j = 0, channel; |
| 2146 | const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize; |
| 2147 | |
| 2148 | FLAC__ASSERT(0 != encoder); |
| 2149 | FLAC__ASSERT(0 != encoder->private_); |
| 2150 | FLAC__ASSERT(0 != encoder->protected_); |
| 2151 | FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK); |
| 2152 | |
| 2153 | do { |
| 2154 | const unsigned n = flac_min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j); |
| 2155 | |
| 2156 | if(encoder->protected_->verify) |
| 2157 | append_to_verify_fifo_(&encoder->private_->verify.input_fifo, buffer, j, channels, n); |
| 2158 | |
| 2159 | for(channel = 0; channel < channels; channel++) { |
| 2160 | if (buffer[channel] == NULL) { |
| 2161 | return false; |
| 2162 | } |
| 2163 | memcpy(&encoder->private_->integer_signal[channel][encoder->private_->current_sample_number], &buffer[channel][j], sizeof(buffer[channel][0]) * n); |
| 2164 | } |
| 2165 | |
| 2166 | if(encoder->protected_->do_mid_side_stereo) { |
| 2167 | FLAC__ASSERT(channels == 2); |
| 2168 | /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */ |
| 2169 | for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) { |
| 2170 | encoder->private_->integer_signal_mid_side[1][i] = buffer[0][j] - buffer[1][j]; |
| 2171 | encoder->private_->integer_signal_mid_side[0][i] = (buffer[0][j] + buffer[1][j]) >> 1; /* NOTE: not the same as 'mid = (buffer[0][j] + buffer[1][j]) / 2' ! */ |
| 2172 | } |
| 2173 | } |
| 2174 | else |
| 2175 | j += n; |
| 2176 | |
| 2177 | encoder->private_->current_sample_number += n; |
| 2178 | |
| 2179 | /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */ |
| 2180 | if(encoder->private_->current_sample_number > blocksize) { |
| 2181 | FLAC__ASSERT(encoder->private_->current_sample_number == blocksize+OVERREAD_); |
| 2182 | FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */ |
| 2183 | if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false)) |
| 2184 | return false; |
| 2185 | /* move unprocessed overread samples to beginnings of arrays */ |
| 2186 | for(channel = 0; channel < channels; channel++) |
| 2187 | encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][blocksize]; |
| 2188 | if(encoder->protected_->do_mid_side_stereo) { |
| 2189 | encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][blocksize]; |
| 2190 | encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][blocksize]; |
| 2191 | } |
| 2192 | encoder->private_->current_sample_number = 1; |
| 2193 | } |
| 2194 | } while(j < samples); |
| 2195 | |
| 2196 | return true; |
| 2197 | } |
| 2198 | |
| 2199 | FLAC_API FLAC__bool FLAC__stream_encoder_process_interleaved(FLAC__StreamEncoder *encoder, const FLAC__int32 buffer[], unsigned samples) |
| 2200 | { |
| 2201 | unsigned i, j, k, channel; |
| 2202 | FLAC__int32 x, mid, side; |
| 2203 | const unsigned channels = encoder->protected_->channels, blocksize = encoder->protected_->blocksize; |
| 2204 | |
| 2205 | FLAC__ASSERT(0 != encoder); |
| 2206 | FLAC__ASSERT(0 != encoder->private_); |
| 2207 | FLAC__ASSERT(0 != encoder->protected_); |
| 2208 | FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK); |
| 2209 | |
| 2210 | j = k = 0; |
| 2211 | /* |
| 2212 | * we have several flavors of the same basic loop, optimized for |
| 2213 | * different conditions: |
| 2214 | */ |
| 2215 | if(encoder->protected_->do_mid_side_stereo && channels == 2) { |
| 2216 | /* |
| 2217 | * stereo coding: unroll channel loop |
| 2218 | */ |
| 2219 | do { |
| 2220 | if(encoder->protected_->verify) |
| 2221 | append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, flac_min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j)); |
| 2222 | |
| 2223 | /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */ |
| 2224 | for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) { |
| 2225 | encoder->private_->integer_signal[0][i] = mid = side = buffer[k++]; |
| 2226 | x = buffer[k++]; |
| 2227 | encoder->private_->integer_signal[1][i] = x; |
| 2228 | mid += x; |
| 2229 | side -= x; |
| 2230 | mid >>= 1; /* NOTE: not the same as 'mid = (left + right) / 2' ! */ |
| 2231 | encoder->private_->integer_signal_mid_side[1][i] = side; |
| 2232 | encoder->private_->integer_signal_mid_side[0][i] = mid; |
| 2233 | } |
| 2234 | encoder->private_->current_sample_number = i; |
| 2235 | /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */ |
| 2236 | if(i > blocksize) { |
| 2237 | if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false)) |
| 2238 | return false; |
| 2239 | /* move unprocessed overread samples to beginnings of arrays */ |
| 2240 | FLAC__ASSERT(i == blocksize+OVERREAD_); |
| 2241 | FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */ |
| 2242 | encoder->private_->integer_signal[0][0] = encoder->private_->integer_signal[0][blocksize]; |
| 2243 | encoder->private_->integer_signal[1][0] = encoder->private_->integer_signal[1][blocksize]; |
| 2244 | encoder->private_->integer_signal_mid_side[0][0] = encoder->private_->integer_signal_mid_side[0][blocksize]; |
| 2245 | encoder->private_->integer_signal_mid_side[1][0] = encoder->private_->integer_signal_mid_side[1][blocksize]; |
| 2246 | encoder->private_->current_sample_number = 1; |
| 2247 | } |
| 2248 | } while(j < samples); |
| 2249 | } |
| 2250 | else { |
| 2251 | /* |
| 2252 | * independent channel coding: buffer each channel in inner loop |
| 2253 | */ |
| 2254 | do { |
| 2255 | if(encoder->protected_->verify) |
| 2256 | append_to_verify_fifo_interleaved_(&encoder->private_->verify.input_fifo, buffer, j, channels, flac_min(blocksize+OVERREAD_-encoder->private_->current_sample_number, samples-j)); |
| 2257 | |
| 2258 | /* "i <= blocksize" to overread 1 sample; see comment in OVERREAD_ decl */ |
| 2259 | for(i = encoder->private_->current_sample_number; i <= blocksize && j < samples; i++, j++) { |
| 2260 | for(channel = 0; channel < channels; channel++) |
| 2261 | encoder->private_->integer_signal[channel][i] = buffer[k++]; |
| 2262 | } |
| 2263 | encoder->private_->current_sample_number = i; |
| 2264 | /* we only process if we have a full block + 1 extra sample; final block is always handled by FLAC__stream_encoder_finish() */ |
| 2265 | if(i > blocksize) { |
| 2266 | if(!process_frame_(encoder, /*is_fractional_block=*/false, /*is_last_block=*/false)) |
| 2267 | return false; |
| 2268 | /* move unprocessed overread samples to beginnings of arrays */ |
| 2269 | FLAC__ASSERT(i == blocksize+OVERREAD_); |
| 2270 | FLAC__ASSERT(OVERREAD_ == 1); /* assert we only overread 1 sample which simplifies the rest of the code below */ |
| 2271 | for(channel = 0; channel < channels; channel++) |
| 2272 | encoder->private_->integer_signal[channel][0] = encoder->private_->integer_signal[channel][blocksize]; |
| 2273 | encoder->private_->current_sample_number = 1; |
| 2274 | } |
| 2275 | } while(j < samples); |
| 2276 | } |
| 2277 | |
| 2278 | return true; |
| 2279 | } |
| 2280 | |
| 2281 | /*********************************************************************** |
| 2282 | * |
| 2283 | * Private class methods |
| 2284 | * |
| 2285 | ***********************************************************************/ |
| 2286 | |
| 2287 | void set_defaults_(FLAC__StreamEncoder *encoder) |
| 2288 | { |
| 2289 | FLAC__ASSERT(0 != encoder); |
| 2290 | |
| 2291 | #ifdef FLAC__MANDATORY_VERIFY_WHILE_ENCODING |
| 2292 | encoder->protected_->verify = true; |
| 2293 | #else |
| 2294 | encoder->protected_->verify = false; |
| 2295 | #endif |
| 2296 | encoder->protected_->streamable_subset = true; |
| 2297 | encoder->protected_->do_md5 = true; |
| 2298 | encoder->protected_->do_mid_side_stereo = false; |
| 2299 | encoder->protected_->loose_mid_side_stereo = false; |
| 2300 | encoder->protected_->channels = 2; |
| 2301 | encoder->protected_->bits_per_sample = 16; |
| 2302 | encoder->protected_->sample_rate = 44100; |
| 2303 | encoder->protected_->blocksize = 0; |
| 2304 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 2305 | encoder->protected_->num_apodizations = 1; |
| 2306 | encoder->protected_->apodizations[0].type = FLAC__APODIZATION_TUKEY; |
| 2307 | encoder->protected_->apodizations[0].parameters.tukey.p = 0.5; |
| 2308 | #endif |
| 2309 | encoder->protected_->max_lpc_order = 0; |
| 2310 | encoder->protected_->qlp_coeff_precision = 0; |
| 2311 | encoder->protected_->do_qlp_coeff_prec_search = false; |
| 2312 | encoder->protected_->do_exhaustive_model_search = false; |
| 2313 | encoder->protected_->do_escape_coding = false; |
| 2314 | encoder->protected_->min_residual_partition_order = 0; |
| 2315 | encoder->protected_->max_residual_partition_order = 0; |
| 2316 | encoder->protected_->rice_parameter_search_dist = 0; |
| 2317 | encoder->protected_->total_samples_estimate = 0; |
| 2318 | encoder->protected_->metadata = 0; |
| 2319 | encoder->protected_->num_metadata_blocks = 0; |
| 2320 | |
| 2321 | encoder->private_->seek_table = 0; |
| 2322 | encoder->private_->disable_constant_subframes = false; |
| 2323 | encoder->private_->disable_fixed_subframes = false; |
| 2324 | encoder->private_->disable_verbatim_subframes = false; |
| 2325 | encoder->private_->is_ogg = false; |
| 2326 | encoder->private_->read_callback = 0; |
| 2327 | encoder->private_->write_callback = 0; |
| 2328 | encoder->private_->seek_callback = 0; |
| 2329 | encoder->private_->tell_callback = 0; |
| 2330 | encoder->private_->metadata_callback = 0; |
| 2331 | encoder->private_->progress_callback = 0; |
| 2332 | encoder->private_->client_data = 0; |
| 2333 | |
| 2334 | #if FLAC__HAS_OGG |
| 2335 | FLAC__ogg_encoder_aspect_set_defaults(&encoder->protected_->ogg_encoder_aspect); |
| 2336 | #endif |
| 2337 | |
| 2338 | FLAC__stream_encoder_set_compression_level(encoder, 5); |
| 2339 | } |
| 2340 | |
| 2341 | void free_(FLAC__StreamEncoder *encoder) |
| 2342 | { |
| 2343 | unsigned i, channel; |
| 2344 | |
| 2345 | FLAC__ASSERT(0 != encoder); |
| 2346 | if(encoder->protected_->metadata) { |
| 2347 | free(encoder->protected_->metadata); |
| 2348 | encoder->protected_->metadata = 0; |
| 2349 | encoder->protected_->num_metadata_blocks = 0; |
| 2350 | } |
| 2351 | for(i = 0; i < encoder->protected_->channels; i++) { |
| 2352 | if(0 != encoder->private_->integer_signal_unaligned[i]) { |
| 2353 | free(encoder->private_->integer_signal_unaligned[i]); |
| 2354 | encoder->private_->integer_signal_unaligned[i] = 0; |
| 2355 | } |
| 2356 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 2357 | if(0 != encoder->private_->real_signal_unaligned[i]) { |
| 2358 | free(encoder->private_->real_signal_unaligned[i]); |
| 2359 | encoder->private_->real_signal_unaligned[i] = 0; |
| 2360 | } |
| 2361 | #endif |
| 2362 | } |
| 2363 | for(i = 0; i < 2; i++) { |
| 2364 | if(0 != encoder->private_->integer_signal_mid_side_unaligned[i]) { |
| 2365 | free(encoder->private_->integer_signal_mid_side_unaligned[i]); |
| 2366 | encoder->private_->integer_signal_mid_side_unaligned[i] = 0; |
| 2367 | } |
| 2368 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 2369 | if(0 != encoder->private_->real_signal_mid_side_unaligned[i]) { |
| 2370 | free(encoder->private_->real_signal_mid_side_unaligned[i]); |
| 2371 | encoder->private_->real_signal_mid_side_unaligned[i] = 0; |
| 2372 | } |
| 2373 | #endif |
| 2374 | } |
| 2375 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 2376 | for(i = 0; i < encoder->protected_->num_apodizations; i++) { |
| 2377 | if(0 != encoder->private_->window_unaligned[i]) { |
| 2378 | free(encoder->private_->window_unaligned[i]); |
| 2379 | encoder->private_->window_unaligned[i] = 0; |
| 2380 | } |
| 2381 | } |
| 2382 | if(0 != encoder->private_->windowed_signal_unaligned) { |
| 2383 | free(encoder->private_->windowed_signal_unaligned); |
| 2384 | encoder->private_->windowed_signal_unaligned = 0; |
| 2385 | } |
| 2386 | #endif |
| 2387 | for(channel = 0; channel < encoder->protected_->channels; channel++) { |
| 2388 | for(i = 0; i < 2; i++) { |
| 2389 | if(0 != encoder->private_->residual_workspace_unaligned[channel][i]) { |
| 2390 | free(encoder->private_->residual_workspace_unaligned[channel][i]); |
| 2391 | encoder->private_->residual_workspace_unaligned[channel][i] = 0; |
| 2392 | } |
| 2393 | } |
| 2394 | } |
| 2395 | for(channel = 0; channel < 2; channel++) { |
| 2396 | for(i = 0; i < 2; i++) { |
| 2397 | if(0 != encoder->private_->residual_workspace_mid_side_unaligned[channel][i]) { |
| 2398 | free(encoder->private_->residual_workspace_mid_side_unaligned[channel][i]); |
| 2399 | encoder->private_->residual_workspace_mid_side_unaligned[channel][i] = 0; |
| 2400 | } |
| 2401 | } |
| 2402 | } |
| 2403 | if(0 != encoder->private_->abs_residual_partition_sums_unaligned) { |
| 2404 | free(encoder->private_->abs_residual_partition_sums_unaligned); |
| 2405 | encoder->private_->abs_residual_partition_sums_unaligned = 0; |
| 2406 | } |
| 2407 | if(0 != encoder->private_->raw_bits_per_partition_unaligned) { |
| 2408 | free(encoder->private_->raw_bits_per_partition_unaligned); |
| 2409 | encoder->private_->raw_bits_per_partition_unaligned = 0; |
| 2410 | } |
| 2411 | if(encoder->protected_->verify) { |
| 2412 | for(i = 0; i < encoder->protected_->channels; i++) { |
| 2413 | if(0 != encoder->private_->verify.input_fifo.data[i]) { |
| 2414 | free(encoder->private_->verify.input_fifo.data[i]); |
| 2415 | encoder->private_->verify.input_fifo.data[i] = 0; |
| 2416 | } |
| 2417 | } |
| 2418 | } |
| 2419 | FLAC__bitwriter_free(encoder->private_->frame); |
| 2420 | } |
| 2421 | |
| 2422 | FLAC__bool resize_buffers_(FLAC__StreamEncoder *encoder, unsigned new_blocksize) |
| 2423 | { |
| 2424 | FLAC__bool ok; |
| 2425 | unsigned i, channel; |
| 2426 | |
| 2427 | FLAC__ASSERT(new_blocksize > 0); |
| 2428 | FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK); |
| 2429 | FLAC__ASSERT(encoder->private_->current_sample_number == 0); |
| 2430 | |
| 2431 | /* To avoid excessive malloc'ing, we only grow the buffer; no shrinking. */ |
| 2432 | if(new_blocksize <= encoder->private_->input_capacity) |
| 2433 | return true; |
| 2434 | |
| 2435 | ok = true; |
| 2436 | |
| 2437 | /* WATCHOUT: FLAC__lpc_compute_residual_from_qlp_coefficients_asm_ia32_mmx() and ..._intrin_sse2() |
| 2438 | * require that the input arrays (in our case the integer signals) |
| 2439 | * have a buffer of up to 3 zeroes in front (at negative indices) for |
| 2440 | * alignment purposes; we use 4 in front to keep the data well-aligned. |
| 2441 | */ |
| 2442 | |
| 2443 | for(i = 0; ok && i < encoder->protected_->channels; i++) { |
| 2444 | ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4+OVERREAD_, &encoder->private_->integer_signal_unaligned[i], &encoder->private_->integer_signal[i]); |
| 2445 | memset(encoder->private_->integer_signal[i], 0, sizeof(FLAC__int32)*4); |
| 2446 | encoder->private_->integer_signal[i] += 4; |
| 2447 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 2448 | #if 0 /* @@@ currently unused */ |
| 2449 | if(encoder->protected_->max_lpc_order > 0) |
| 2450 | ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize+OVERREAD_, &encoder->private_->real_signal_unaligned[i], &encoder->private_->real_signal[i]); |
| 2451 | #endif |
| 2452 | #endif |
| 2453 | } |
| 2454 | for(i = 0; ok && i < 2; i++) { |
| 2455 | ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize+4+OVERREAD_, &encoder->private_->integer_signal_mid_side_unaligned[i], &encoder->private_->integer_signal_mid_side[i]); |
| 2456 | memset(encoder->private_->integer_signal_mid_side[i], 0, sizeof(FLAC__int32)*4); |
| 2457 | encoder->private_->integer_signal_mid_side[i] += 4; |
| 2458 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 2459 | #if 0 /* @@@ currently unused */ |
| 2460 | if(encoder->protected_->max_lpc_order > 0) |
| 2461 | ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize+OVERREAD_, &encoder->private_->real_signal_mid_side_unaligned[i], &encoder->private_->real_signal_mid_side[i]); |
| 2462 | #endif |
| 2463 | #endif |
| 2464 | } |
| 2465 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 2466 | if(ok && encoder->protected_->max_lpc_order > 0) { |
| 2467 | for(i = 0; ok && i < encoder->protected_->num_apodizations; i++) |
| 2468 | ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->window_unaligned[i], &encoder->private_->window[i]); |
| 2469 | ok = ok && FLAC__memory_alloc_aligned_real_array(new_blocksize, &encoder->private_->windowed_signal_unaligned, &encoder->private_->windowed_signal); |
| 2470 | } |
| 2471 | #endif |
| 2472 | for(channel = 0; ok && channel < encoder->protected_->channels; channel++) { |
| 2473 | for(i = 0; ok && i < 2; i++) { |
| 2474 | ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize, &encoder->private_->residual_workspace_unaligned[channel][i], &encoder->private_->residual_workspace[channel][i]); |
| 2475 | } |
| 2476 | } |
| 2477 | for(channel = 0; ok && channel < 2; channel++) { |
| 2478 | for(i = 0; ok && i < 2; i++) { |
| 2479 | ok = ok && FLAC__memory_alloc_aligned_int32_array(new_blocksize, &encoder->private_->residual_workspace_mid_side_unaligned[channel][i], &encoder->private_->residual_workspace_mid_side[channel][i]); |
| 2480 | } |
| 2481 | } |
| 2482 | /* the *2 is an approximation to the series 1 + 1/2 + 1/4 + ... that sums tree occupies in a flat array */ |
| 2483 | /*@@@ new_blocksize*2 is too pessimistic, but to fix, we need smarter logic because a smaller new_blocksize can actually increase the # of partitions; would require moving this out into a separate function, then checking its capacity against the need of the current blocksize&min/max_partition_order (and maybe predictor order) */ |
| 2484 | ok = ok && FLAC__memory_alloc_aligned_uint64_array(new_blocksize * 2, &encoder->private_->abs_residual_partition_sums_unaligned, &encoder->private_->abs_residual_partition_sums); |
| 2485 | if(encoder->protected_->do_escape_coding) |
| 2486 | ok = ok && FLAC__memory_alloc_aligned_unsigned_array(new_blocksize * 2, &encoder->private_->raw_bits_per_partition_unaligned, &encoder->private_->raw_bits_per_partition); |
| 2487 | |
| 2488 | /* now adjust the windows if the blocksize has changed */ |
| 2489 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 2490 | if(ok && new_blocksize != encoder->private_->input_capacity && encoder->protected_->max_lpc_order > 0) { |
| 2491 | for(i = 0; ok && i < encoder->protected_->num_apodizations; i++) { |
| 2492 | switch(encoder->protected_->apodizations[i].type) { |
| 2493 | case FLAC__APODIZATION_BARTLETT: |
| 2494 | FLAC__window_bartlett(encoder->private_->window[i], new_blocksize); |
| 2495 | break; |
| 2496 | case FLAC__APODIZATION_BARTLETT_HANN: |
| 2497 | FLAC__window_bartlett_hann(encoder->private_->window[i], new_blocksize); |
| 2498 | break; |
| 2499 | case FLAC__APODIZATION_BLACKMAN: |
| 2500 | FLAC__window_blackman(encoder->private_->window[i], new_blocksize); |
| 2501 | break; |
| 2502 | case FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE: |
| 2503 | FLAC__window_blackman_harris_4term_92db_sidelobe(encoder->private_->window[i], new_blocksize); |
| 2504 | break; |
| 2505 | case FLAC__APODIZATION_CONNES: |
| 2506 | FLAC__window_connes(encoder->private_->window[i], new_blocksize); |
| 2507 | break; |
| 2508 | case FLAC__APODIZATION_FLATTOP: |
| 2509 | FLAC__window_flattop(encoder->private_->window[i], new_blocksize); |
| 2510 | break; |
| 2511 | case FLAC__APODIZATION_GAUSS: |
| 2512 | FLAC__window_gauss(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.gauss.stddev); |
| 2513 | break; |
| 2514 | case FLAC__APODIZATION_HAMMING: |
| 2515 | FLAC__window_hamming(encoder->private_->window[i], new_blocksize); |
| 2516 | break; |
| 2517 | case FLAC__APODIZATION_HANN: |
| 2518 | FLAC__window_hann(encoder->private_->window[i], new_blocksize); |
| 2519 | break; |
| 2520 | case FLAC__APODIZATION_KAISER_BESSEL: |
| 2521 | FLAC__window_kaiser_bessel(encoder->private_->window[i], new_blocksize); |
| 2522 | break; |
| 2523 | case FLAC__APODIZATION_NUTTALL: |
| 2524 | FLAC__window_nuttall(encoder->private_->window[i], new_blocksize); |
| 2525 | break; |
| 2526 | case FLAC__APODIZATION_RECTANGLE: |
| 2527 | FLAC__window_rectangle(encoder->private_->window[i], new_blocksize); |
| 2528 | break; |
| 2529 | case FLAC__APODIZATION_TRIANGLE: |
| 2530 | FLAC__window_triangle(encoder->private_->window[i], new_blocksize); |
| 2531 | break; |
| 2532 | case FLAC__APODIZATION_TUKEY: |
| 2533 | FLAC__window_tukey(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.tukey.p); |
| 2534 | break; |
| 2535 | case FLAC__APODIZATION_PARTIAL_TUKEY: |
| 2536 | FLAC__window_partial_tukey(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.multiple_tukey.p, encoder->protected_->apodizations[i].parameters.multiple_tukey.start, encoder->protected_->apodizations[i].parameters.multiple_tukey.end); |
| 2537 | break; |
| 2538 | case FLAC__APODIZATION_PUNCHOUT_TUKEY: |
| 2539 | FLAC__window_punchout_tukey(encoder->private_->window[i], new_blocksize, encoder->protected_->apodizations[i].parameters.multiple_tukey.p, encoder->protected_->apodizations[i].parameters.multiple_tukey.start, encoder->protected_->apodizations[i].parameters.multiple_tukey.end); |
| 2540 | break; |
| 2541 | case FLAC__APODIZATION_WELCH: |
| 2542 | FLAC__window_welch(encoder->private_->window[i], new_blocksize); |
| 2543 | break; |
| 2544 | default: |
| 2545 | FLAC__ASSERT(0); |
| 2546 | /* double protection */ |
| 2547 | FLAC__window_hann(encoder->private_->window[i], new_blocksize); |
| 2548 | break; |
| 2549 | } |
| 2550 | } |
| 2551 | } |
| 2552 | #endif |
| 2553 | |
| 2554 | if(ok) |
| 2555 | encoder->private_->input_capacity = new_blocksize; |
| 2556 | else |
| 2557 | encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; |
| 2558 | |
| 2559 | return ok; |
| 2560 | } |
| 2561 | |
| 2562 | FLAC__bool write_bitbuffer_(FLAC__StreamEncoder *encoder, unsigned samples, FLAC__bool is_last_block) |
| 2563 | { |
| 2564 | const FLAC__byte *buffer; |
| 2565 | size_t bytes; |
| 2566 | |
| 2567 | FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame)); |
| 2568 | |
| 2569 | if(!FLAC__bitwriter_get_buffer(encoder->private_->frame, &buffer, &bytes)) { |
| 2570 | encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; |
| 2571 | return false; |
| 2572 | } |
| 2573 | |
| 2574 | if(encoder->protected_->verify) { |
| 2575 | encoder->private_->verify.output.data = buffer; |
| 2576 | encoder->private_->verify.output.bytes = bytes; |
| 2577 | if(encoder->private_->verify.state_hint == ENCODER_IN_MAGIC) { |
| 2578 | encoder->private_->verify.needs_magic_hack = true; |
| 2579 | } |
| 2580 | else { |
| 2581 | if(!FLAC__stream_decoder_process_single(encoder->private_->verify.decoder)) { |
| 2582 | FLAC__bitwriter_release_buffer(encoder->private_->frame); |
| 2583 | FLAC__bitwriter_clear(encoder->private_->frame); |
| 2584 | if(encoder->protected_->state != FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA) |
| 2585 | encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR; |
| 2586 | return false; |
| 2587 | } |
| 2588 | } |
| 2589 | } |
| 2590 | |
| 2591 | if(write_frame_(encoder, buffer, bytes, samples, is_last_block) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) { |
| 2592 | FLAC__bitwriter_release_buffer(encoder->private_->frame); |
| 2593 | FLAC__bitwriter_clear(encoder->private_->frame); |
| 2594 | encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; |
| 2595 | return false; |
| 2596 | } |
| 2597 | |
| 2598 | FLAC__bitwriter_release_buffer(encoder->private_->frame); |
| 2599 | FLAC__bitwriter_clear(encoder->private_->frame); |
| 2600 | |
| 2601 | if(samples > 0) { |
| 2602 | encoder->private_->streaminfo.data.stream_info.min_framesize = flac_min(bytes, encoder->private_->streaminfo.data.stream_info.min_framesize); |
| 2603 | encoder->private_->streaminfo.data.stream_info.max_framesize = flac_max(bytes, encoder->private_->streaminfo.data.stream_info.max_framesize); |
| 2604 | } |
| 2605 | |
| 2606 | return true; |
| 2607 | } |
| 2608 | |
| 2609 | FLAC__StreamEncoderWriteStatus write_frame_(FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, FLAC__bool is_last_block) |
| 2610 | { |
| 2611 | FLAC__StreamEncoderWriteStatus status; |
| 2612 | FLAC__uint64 output_position = 0; |
| 2613 | |
| 2614 | #if FLAC__HAS_OGG == 0 |
| 2615 | (void)is_last_block; |
| 2616 | #endif |
| 2617 | |
| 2618 | /* FLAC__STREAM_ENCODER_TELL_STATUS_UNSUPPORTED just means we didn't get the offset; no error */ |
| 2619 | if(encoder->private_->tell_callback && encoder->private_->tell_callback(encoder, &output_position, encoder->private_->client_data) == FLAC__STREAM_ENCODER_TELL_STATUS_ERROR) { |
| 2620 | encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; |
| 2621 | return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR; |
| 2622 | } |
| 2623 | |
| 2624 | /* |
| 2625 | * Watch for the STREAMINFO block and first SEEKTABLE block to go by and store their offsets. |
| 2626 | */ |
| 2627 | if(samples == 0) { |
| 2628 | FLAC__MetadataType type = (buffer[0] & 0x7f); |
| 2629 | if(type == FLAC__METADATA_TYPE_STREAMINFO) |
| 2630 | encoder->protected_->streaminfo_offset = output_position; |
| 2631 | else if(type == FLAC__METADATA_TYPE_SEEKTABLE && encoder->protected_->seektable_offset == 0) |
| 2632 | encoder->protected_->seektable_offset = output_position; |
| 2633 | } |
| 2634 | |
| 2635 | /* |
| 2636 | * Mark the current seek point if hit (if audio_offset == 0 that |
| 2637 | * means we're still writing metadata and haven't hit the first |
| 2638 | * frame yet) |
| 2639 | */ |
| 2640 | if(0 != encoder->private_->seek_table && encoder->protected_->audio_offset > 0 && encoder->private_->seek_table->num_points > 0) { |
| 2641 | const unsigned blocksize = FLAC__stream_encoder_get_blocksize(encoder); |
| 2642 | const FLAC__uint64 frame_first_sample = encoder->private_->samples_written; |
| 2643 | const FLAC__uint64 frame_last_sample = frame_first_sample + (FLAC__uint64)blocksize - 1; |
| 2644 | FLAC__uint64 test_sample; |
| 2645 | unsigned i; |
| 2646 | for(i = encoder->private_->first_seekpoint_to_check; i < encoder->private_->seek_table->num_points; i++) { |
| 2647 | test_sample = encoder->private_->seek_table->points[i].sample_number; |
| 2648 | if(test_sample > frame_last_sample) { |
| 2649 | break; |
| 2650 | } |
| 2651 | else if(test_sample >= frame_first_sample) { |
| 2652 | encoder->private_->seek_table->points[i].sample_number = frame_first_sample; |
| 2653 | encoder->private_->seek_table->points[i].stream_offset = output_position - encoder->protected_->audio_offset; |
| 2654 | encoder->private_->seek_table->points[i].frame_samples = blocksize; |
| 2655 | encoder->private_->first_seekpoint_to_check++; |
| 2656 | /* DO NOT: "break;" and here's why: |
| 2657 | * The seektable template may contain more than one target |
| 2658 | * sample for any given frame; we will keep looping, generating |
| 2659 | * duplicate seekpoints for them, and we'll clean it up later, |
| 2660 | * just before writing the seektable back to the metadata. |
| 2661 | */ |
| 2662 | } |
| 2663 | else { |
| 2664 | encoder->private_->first_seekpoint_to_check++; |
| 2665 | } |
| 2666 | } |
| 2667 | } |
| 2668 | |
| 2669 | #if FLAC__HAS_OGG |
| 2670 | if(encoder->private_->is_ogg) { |
| 2671 | status = FLAC__ogg_encoder_aspect_write_callback_wrapper( |
| 2672 | &encoder->protected_->ogg_encoder_aspect, |
| 2673 | buffer, |
| 2674 | bytes, |
| 2675 | samples, |
| 2676 | encoder->private_->current_frame_number, |
| 2677 | is_last_block, |
| 2678 | (FLAC__OggEncoderAspectWriteCallbackProxy)encoder->private_->write_callback, |
| 2679 | encoder, |
| 2680 | encoder->private_->client_data |
| 2681 | ); |
| 2682 | } |
| 2683 | else |
| 2684 | #endif |
| 2685 | status = encoder->private_->write_callback(encoder, buffer, bytes, samples, encoder->private_->current_frame_number, encoder->private_->client_data); |
| 2686 | |
| 2687 | if(status == FLAC__STREAM_ENCODER_WRITE_STATUS_OK) { |
| 2688 | encoder->private_->bytes_written += bytes; |
| 2689 | encoder->private_->samples_written += samples; |
| 2690 | /* we keep a high watermark on the number of frames written because |
| 2691 | * when the encoder goes back to write metadata, 'current_frame' |
| 2692 | * will drop back to 0. |
| 2693 | */ |
| 2694 | encoder->private_->frames_written = flac_max(encoder->private_->frames_written, encoder->private_->current_frame_number+1); |
| 2695 | } |
| 2696 | else |
| 2697 | encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; |
| 2698 | |
| 2699 | return status; |
| 2700 | } |
| 2701 | |
| 2702 | /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */ |
| 2703 | void update_metadata_(const FLAC__StreamEncoder *encoder) |
| 2704 | { |
| 2705 | FLAC__byte b[flac_max(6u, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)]; |
| 2706 | const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo; |
| 2707 | const FLAC__uint64 samples = metadata->data.stream_info.total_samples; |
| 2708 | const unsigned min_framesize = metadata->data.stream_info.min_framesize; |
| 2709 | const unsigned max_framesize = metadata->data.stream_info.max_framesize; |
| 2710 | const unsigned bps = metadata->data.stream_info.bits_per_sample; |
| 2711 | FLAC__StreamEncoderSeekStatus seek_status; |
| 2712 | |
| 2713 | FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO); |
| 2714 | |
| 2715 | /* All this is based on intimate knowledge of the stream header |
| 2716 | * layout, but a change to the header format that would break this |
| 2717 | * would also break all streams encoded in the previous format. |
| 2718 | */ |
| 2719 | |
| 2720 | /* |
| 2721 | * Write MD5 signature |
| 2722 | */ |
| 2723 | { |
| 2724 | const unsigned md5_offset = |
| 2725 | FLAC__STREAM_METADATA_HEADER_LENGTH + |
| 2726 | ( |
| 2727 | FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN + |
| 2728 | FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN + |
| 2729 | FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN + |
| 2730 | FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN + |
| 2731 | FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN + |
| 2732 | FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN + |
| 2733 | FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN + |
| 2734 | FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN |
| 2735 | ) / 8; |
| 2736 | |
| 2737 | if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + md5_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) { |
| 2738 | if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR) |
| 2739 | encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; |
| 2740 | return; |
| 2741 | } |
| 2742 | if(encoder->private_->write_callback(encoder, metadata->data.stream_info.md5sum, 16, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) { |
| 2743 | encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; |
| 2744 | return; |
| 2745 | } |
| 2746 | } |
| 2747 | |
| 2748 | /* |
| 2749 | * Write total samples |
| 2750 | */ |
| 2751 | { |
| 2752 | const unsigned total_samples_byte_offset = |
| 2753 | FLAC__STREAM_METADATA_HEADER_LENGTH + |
| 2754 | ( |
| 2755 | FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN + |
| 2756 | FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN + |
| 2757 | FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN + |
| 2758 | FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN + |
| 2759 | FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN + |
| 2760 | FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN + |
| 2761 | FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN |
| 2762 | - 4 |
| 2763 | ) / 8; |
| 2764 | |
| 2765 | b[0] = ((FLAC__byte)(bps-1) << 4) | (FLAC__byte)((samples >> 32) & 0x0F); |
| 2766 | b[1] = (FLAC__byte)((samples >> 24) & 0xFF); |
| 2767 | b[2] = (FLAC__byte)((samples >> 16) & 0xFF); |
| 2768 | b[3] = (FLAC__byte)((samples >> 8) & 0xFF); |
| 2769 | b[4] = (FLAC__byte)(samples & 0xFF); |
| 2770 | if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + total_samples_byte_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) { |
| 2771 | if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR) |
| 2772 | encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; |
| 2773 | return; |
| 2774 | } |
| 2775 | if(encoder->private_->write_callback(encoder, b, 5, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) { |
| 2776 | encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; |
| 2777 | return; |
| 2778 | } |
| 2779 | } |
| 2780 | |
| 2781 | /* |
| 2782 | * Write min/max framesize |
| 2783 | */ |
| 2784 | { |
| 2785 | const unsigned min_framesize_offset = |
| 2786 | FLAC__STREAM_METADATA_HEADER_LENGTH + |
| 2787 | ( |
| 2788 | FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN + |
| 2789 | FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN |
| 2790 | ) / 8; |
| 2791 | |
| 2792 | b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF); |
| 2793 | b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF); |
| 2794 | b[2] = (FLAC__byte)(min_framesize & 0xFF); |
| 2795 | b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF); |
| 2796 | b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF); |
| 2797 | b[5] = (FLAC__byte)(max_framesize & 0xFF); |
| 2798 | if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->streaminfo_offset + min_framesize_offset, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) { |
| 2799 | if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR) |
| 2800 | encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; |
| 2801 | return; |
| 2802 | } |
| 2803 | if(encoder->private_->write_callback(encoder, b, 6, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) { |
| 2804 | encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; |
| 2805 | return; |
| 2806 | } |
| 2807 | } |
| 2808 | |
| 2809 | /* |
| 2810 | * Write seektable |
| 2811 | */ |
| 2812 | if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) { |
| 2813 | unsigned i; |
| 2814 | |
| 2815 | FLAC__format_seektable_sort(encoder->private_->seek_table); |
| 2816 | |
| 2817 | FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table)); |
| 2818 | |
| 2819 | if((seek_status = encoder->private_->seek_callback(encoder, encoder->protected_->seektable_offset + FLAC__STREAM_METADATA_HEADER_LENGTH, encoder->private_->client_data)) != FLAC__STREAM_ENCODER_SEEK_STATUS_OK) { |
| 2820 | if(seek_status == FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR) |
| 2821 | encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; |
| 2822 | return; |
| 2823 | } |
| 2824 | |
| 2825 | for(i = 0; i < encoder->private_->seek_table->num_points; i++) { |
| 2826 | FLAC__uint64 xx; |
| 2827 | unsigned x; |
| 2828 | xx = encoder->private_->seek_table->points[i].sample_number; |
| 2829 | b[7] = (FLAC__byte)xx; xx >>= 8; |
| 2830 | b[6] = (FLAC__byte)xx; xx >>= 8; |
| 2831 | b[5] = (FLAC__byte)xx; xx >>= 8; |
| 2832 | b[4] = (FLAC__byte)xx; xx >>= 8; |
| 2833 | b[3] = (FLAC__byte)xx; xx >>= 8; |
| 2834 | b[2] = (FLAC__byte)xx; xx >>= 8; |
| 2835 | b[1] = (FLAC__byte)xx; xx >>= 8; |
| 2836 | b[0] = (FLAC__byte)xx; xx >>= 8; |
| 2837 | xx = encoder->private_->seek_table->points[i].stream_offset; |
| 2838 | b[15] = (FLAC__byte)xx; xx >>= 8; |
| 2839 | b[14] = (FLAC__byte)xx; xx >>= 8; |
| 2840 | b[13] = (FLAC__byte)xx; xx >>= 8; |
| 2841 | b[12] = (FLAC__byte)xx; xx >>= 8; |
| 2842 | b[11] = (FLAC__byte)xx; xx >>= 8; |
| 2843 | b[10] = (FLAC__byte)xx; xx >>= 8; |
| 2844 | b[9] = (FLAC__byte)xx; xx >>= 8; |
| 2845 | b[8] = (FLAC__byte)xx; xx >>= 8; |
| 2846 | x = encoder->private_->seek_table->points[i].frame_samples; |
| 2847 | b[17] = (FLAC__byte)x; x >>= 8; |
| 2848 | b[16] = (FLAC__byte)x; x >>= 8; |
| 2849 | if(encoder->private_->write_callback(encoder, b, 18, 0, 0, encoder->private_->client_data) != FLAC__STREAM_ENCODER_WRITE_STATUS_OK) { |
| 2850 | encoder->protected_->state = FLAC__STREAM_ENCODER_CLIENT_ERROR; |
| 2851 | return; |
| 2852 | } |
| 2853 | } |
| 2854 | } |
| 2855 | } |
| 2856 | |
| 2857 | #if FLAC__HAS_OGG |
| 2858 | /* Gets called when the encoding process has finished so that we can update the STREAMINFO and SEEKTABLE blocks. */ |
| 2859 | void update_ogg_metadata_(FLAC__StreamEncoder *encoder) |
| 2860 | { |
| 2861 | /* the # of bytes in the 1st packet that precede the STREAMINFO */ |
| 2862 | static const unsigned FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH = |
| 2863 | FLAC__OGG_MAPPING_PACKET_TYPE_LENGTH + |
| 2864 | FLAC__OGG_MAPPING_MAGIC_LENGTH + |
| 2865 | FLAC__OGG_MAPPING_VERSION_MAJOR_LENGTH + |
| 2866 | FLAC__OGG_MAPPING_VERSION_MINOR_LENGTH + |
| 2867 | FLAC__OGG_MAPPING_NUM_HEADERS_LENGTH + |
| 2868 | FLAC__STREAM_SYNC_LENGTH |
| 2869 | ; |
| 2870 | FLAC__byte b[flac_max(6u, FLAC__STREAM_METADATA_SEEKPOINT_LENGTH)]; |
| 2871 | const FLAC__StreamMetadata *metadata = &encoder->private_->streaminfo; |
| 2872 | const FLAC__uint64 samples = metadata->data.stream_info.total_samples; |
| 2873 | const unsigned min_framesize = metadata->data.stream_info.min_framesize; |
| 2874 | const unsigned max_framesize = metadata->data.stream_info.max_framesize; |
| 2875 | ogg_page page; |
| 2876 | |
| 2877 | FLAC__ASSERT(metadata->type == FLAC__METADATA_TYPE_STREAMINFO); |
| 2878 | FLAC__ASSERT(0 != encoder->private_->seek_callback); |
| 2879 | |
| 2880 | /* Pre-check that client supports seeking, since we don't want the |
| 2881 | * ogg_helper code to ever have to deal with this condition. |
| 2882 | */ |
| 2883 | if(encoder->private_->seek_callback(encoder, 0, encoder->private_->client_data) == FLAC__STREAM_ENCODER_SEEK_STATUS_UNSUPPORTED) |
| 2884 | return; |
| 2885 | |
| 2886 | /* All this is based on intimate knowledge of the stream header |
| 2887 | * layout, but a change to the header format that would break this |
| 2888 | * would also break all streams encoded in the previous format. |
| 2889 | */ |
| 2890 | |
| 2891 | /** |
| 2892 | ** Write STREAMINFO stats |
| 2893 | **/ |
| 2894 | simple_ogg_page__init(&page); |
| 2895 | if(!simple_ogg_page__get_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) { |
| 2896 | simple_ogg_page__clear(&page); |
| 2897 | return; /* state already set */ |
| 2898 | } |
| 2899 | |
| 2900 | /* |
| 2901 | * Write MD5 signature |
| 2902 | */ |
| 2903 | { |
| 2904 | const unsigned md5_offset = |
| 2905 | FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH + |
| 2906 | FLAC__STREAM_METADATA_HEADER_LENGTH + |
| 2907 | ( |
| 2908 | FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN + |
| 2909 | FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN + |
| 2910 | FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN + |
| 2911 | FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN + |
| 2912 | FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN + |
| 2913 | FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN + |
| 2914 | FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN + |
| 2915 | FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN |
| 2916 | ) / 8; |
| 2917 | |
| 2918 | if(md5_offset + 16 > (unsigned)page.body_len) { |
| 2919 | encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR; |
| 2920 | simple_ogg_page__clear(&page); |
| 2921 | return; |
| 2922 | } |
| 2923 | memcpy(page.body + md5_offset, metadata->data.stream_info.md5sum, 16); |
| 2924 | } |
| 2925 | |
| 2926 | /* |
| 2927 | * Write total samples |
| 2928 | */ |
| 2929 | { |
| 2930 | const unsigned total_samples_byte_offset = |
| 2931 | FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH + |
| 2932 | FLAC__STREAM_METADATA_HEADER_LENGTH + |
| 2933 | ( |
| 2934 | FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN + |
| 2935 | FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN + |
| 2936 | FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN + |
| 2937 | FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN + |
| 2938 | FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN + |
| 2939 | FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN + |
| 2940 | FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN |
| 2941 | - 4 |
| 2942 | ) / 8; |
| 2943 | |
| 2944 | if(total_samples_byte_offset + 5 > (unsigned)page.body_len) { |
| 2945 | encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR; |
| 2946 | simple_ogg_page__clear(&page); |
| 2947 | return; |
| 2948 | } |
| 2949 | b[0] = (FLAC__byte)page.body[total_samples_byte_offset] & 0xF0; |
| 2950 | b[0] |= (FLAC__byte)((samples >> 32) & 0x0F); |
| 2951 | b[1] = (FLAC__byte)((samples >> 24) & 0xFF); |
| 2952 | b[2] = (FLAC__byte)((samples >> 16) & 0xFF); |
| 2953 | b[3] = (FLAC__byte)((samples >> 8) & 0xFF); |
| 2954 | b[4] = (FLAC__byte)(samples & 0xFF); |
| 2955 | memcpy(page.body + total_samples_byte_offset, b, 5); |
| 2956 | } |
| 2957 | |
| 2958 | /* |
| 2959 | * Write min/max framesize |
| 2960 | */ |
| 2961 | { |
| 2962 | const unsigned min_framesize_offset = |
| 2963 | FIRST_OGG_PACKET_STREAMINFO_PREFIX_LENGTH + |
| 2964 | FLAC__STREAM_METADATA_HEADER_LENGTH + |
| 2965 | ( |
| 2966 | FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN + |
| 2967 | FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN |
| 2968 | ) / 8; |
| 2969 | |
| 2970 | if(min_framesize_offset + 6 > (unsigned)page.body_len) { |
| 2971 | encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR; |
| 2972 | simple_ogg_page__clear(&page); |
| 2973 | return; |
| 2974 | } |
| 2975 | b[0] = (FLAC__byte)((min_framesize >> 16) & 0xFF); |
| 2976 | b[1] = (FLAC__byte)((min_framesize >> 8) & 0xFF); |
| 2977 | b[2] = (FLAC__byte)(min_framesize & 0xFF); |
| 2978 | b[3] = (FLAC__byte)((max_framesize >> 16) & 0xFF); |
| 2979 | b[4] = (FLAC__byte)((max_framesize >> 8) & 0xFF); |
| 2980 | b[5] = (FLAC__byte)(max_framesize & 0xFF); |
| 2981 | memcpy(page.body + min_framesize_offset, b, 6); |
| 2982 | } |
| 2983 | if(!simple_ogg_page__set_at(encoder, encoder->protected_->streaminfo_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) { |
| 2984 | simple_ogg_page__clear(&page); |
| 2985 | return; /* state already set */ |
| 2986 | } |
| 2987 | simple_ogg_page__clear(&page); |
| 2988 | |
| 2989 | /* |
| 2990 | * Write seektable |
| 2991 | */ |
| 2992 | if(0 != encoder->private_->seek_table && encoder->private_->seek_table->num_points > 0 && encoder->protected_->seektable_offset > 0) { |
| 2993 | unsigned i; |
| 2994 | FLAC__byte *p; |
| 2995 | |
| 2996 | FLAC__format_seektable_sort(encoder->private_->seek_table); |
| 2997 | |
| 2998 | FLAC__ASSERT(FLAC__format_seektable_is_legal(encoder->private_->seek_table)); |
| 2999 | |
| 3000 | simple_ogg_page__init(&page); |
| 3001 | if(!simple_ogg_page__get_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->read_callback, encoder->private_->client_data)) { |
| 3002 | simple_ogg_page__clear(&page); |
| 3003 | return; /* state already set */ |
| 3004 | } |
| 3005 | |
| 3006 | if((FLAC__STREAM_METADATA_HEADER_LENGTH + 18*encoder->private_->seek_table->num_points) != (unsigned)page.body_len) { |
| 3007 | encoder->protected_->state = FLAC__STREAM_ENCODER_OGG_ERROR; |
| 3008 | simple_ogg_page__clear(&page); |
| 3009 | return; |
| 3010 | } |
| 3011 | |
| 3012 | for(i = 0, p = page.body + FLAC__STREAM_METADATA_HEADER_LENGTH; i < encoder->private_->seek_table->num_points; i++, p += 18) { |
| 3013 | FLAC__uint64 xx; |
| 3014 | unsigned x; |
| 3015 | xx = encoder->private_->seek_table->points[i].sample_number; |
| 3016 | b[7] = (FLAC__byte)xx; xx >>= 8; |
| 3017 | b[6] = (FLAC__byte)xx; xx >>= 8; |
| 3018 | b[5] = (FLAC__byte)xx; xx >>= 8; |
| 3019 | b[4] = (FLAC__byte)xx; xx >>= 8; |
| 3020 | b[3] = (FLAC__byte)xx; xx >>= 8; |
| 3021 | b[2] = (FLAC__byte)xx; xx >>= 8; |
| 3022 | b[1] = (FLAC__byte)xx; xx >>= 8; |
| 3023 | b[0] = (FLAC__byte)xx; xx >>= 8; |
| 3024 | xx = encoder->private_->seek_table->points[i].stream_offset; |
| 3025 | b[15] = (FLAC__byte)xx; xx >>= 8; |
| 3026 | b[14] = (FLAC__byte)xx; xx >>= 8; |
| 3027 | b[13] = (FLAC__byte)xx; xx >>= 8; |
| 3028 | b[12] = (FLAC__byte)xx; xx >>= 8; |
| 3029 | b[11] = (FLAC__byte)xx; xx >>= 8; |
| 3030 | b[10] = (FLAC__byte)xx; xx >>= 8; |
| 3031 | b[9] = (FLAC__byte)xx; xx >>= 8; |
| 3032 | b[8] = (FLAC__byte)xx; xx >>= 8; |
| 3033 | x = encoder->private_->seek_table->points[i].frame_samples; |
| 3034 | b[17] = (FLAC__byte)x; x >>= 8; |
| 3035 | b[16] = (FLAC__byte)x; x >>= 8; |
| 3036 | memcpy(p, b, 18); |
| 3037 | } |
| 3038 | |
| 3039 | if(!simple_ogg_page__set_at(encoder, encoder->protected_->seektable_offset, &page, encoder->private_->seek_callback, encoder->private_->write_callback, encoder->private_->client_data)) { |
| 3040 | simple_ogg_page__clear(&page); |
| 3041 | return; /* state already set */ |
| 3042 | } |
| 3043 | simple_ogg_page__clear(&page); |
| 3044 | } |
| 3045 | } |
| 3046 | #endif |
| 3047 | |
| 3048 | FLAC__bool process_frame_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block, FLAC__bool is_last_block) |
| 3049 | { |
| 3050 | FLAC__uint16 crc; |
| 3051 | FLAC__ASSERT(encoder->protected_->state == FLAC__STREAM_ENCODER_OK); |
| 3052 | |
| 3053 | /* |
| 3054 | * Accumulate raw signal to the MD5 signature |
| 3055 | */ |
| 3056 | if(encoder->protected_->do_md5 && !FLAC__MD5Accumulate(&encoder->private_->md5context, (const FLAC__int32 * const *)encoder->private_->integer_signal, encoder->protected_->channels, encoder->protected_->blocksize, (encoder->protected_->bits_per_sample+7) / 8)) { |
| 3057 | encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; |
| 3058 | return false; |
| 3059 | } |
| 3060 | |
| 3061 | /* |
| 3062 | * Process the frame header and subframes into the frame bitbuffer |
| 3063 | */ |
| 3064 | if(!process_subframes_(encoder, is_fractional_block)) { |
| 3065 | /* the above function sets the state for us in case of an error */ |
| 3066 | return false; |
| 3067 | } |
| 3068 | |
| 3069 | /* |
| 3070 | * Zero-pad the frame to a byte_boundary |
| 3071 | */ |
| 3072 | if(!FLAC__bitwriter_zero_pad_to_byte_boundary(encoder->private_->frame)) { |
| 3073 | encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; |
| 3074 | return false; |
| 3075 | } |
| 3076 | |
| 3077 | /* |
| 3078 | * CRC-16 the whole thing |
| 3079 | */ |
| 3080 | FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(encoder->private_->frame)); |
| 3081 | if( |
| 3082 | !FLAC__bitwriter_get_write_crc16(encoder->private_->frame, &crc) || |
| 3083 | !FLAC__bitwriter_write_raw_uint32(encoder->private_->frame, crc, FLAC__FRAME_FOOTER_CRC_LEN) |
| 3084 | ) { |
| 3085 | encoder->protected_->state = FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR; |
| 3086 | return false; |
| 3087 | } |
| 3088 | |
| 3089 | /* |
| 3090 | * Write it |
| 3091 | */ |
| 3092 | if(!write_bitbuffer_(encoder, encoder->protected_->blocksize, is_last_block)) { |
| 3093 | /* the above function sets the state for us in case of an error */ |
| 3094 | return false; |
| 3095 | } |
| 3096 | |
| 3097 | /* |
| 3098 | * Get ready for the next frame |
| 3099 | */ |
| 3100 | encoder->private_->current_sample_number = 0; |
| 3101 | encoder->private_->current_frame_number++; |
| 3102 | encoder->private_->streaminfo.data.stream_info.total_samples += (FLAC__uint64)encoder->protected_->blocksize; |
| 3103 | |
| 3104 | return true; |
| 3105 | } |
| 3106 | |
| 3107 | FLAC__bool process_subframes_(FLAC__StreamEncoder *encoder, FLAC__bool is_fractional_block) |
| 3108 | { |
| 3109 | FLAC__FrameHeader frame_header; |
| 3110 | unsigned channel, min_partition_order = encoder->protected_->min_residual_partition_order, max_partition_order; |
| 3111 | FLAC__bool do_independent, do_mid_side; |
| 3112 | |
| 3113 | /* |
| 3114 | * Calculate the min,max Rice partition orders |
| 3115 | */ |
| 3116 | if(is_fractional_block) { |
| 3117 | max_partition_order = 0; |
| 3118 | } |
| 3119 | else { |
| 3120 | max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize(encoder->protected_->blocksize); |
| 3121 | max_partition_order = flac_min(max_partition_order, encoder->protected_->max_residual_partition_order); |
| 3122 | } |
| 3123 | min_partition_order = flac_min(min_partition_order, max_partition_order); |
| 3124 | |
| 3125 | /* |
| 3126 | * Setup the frame |
| 3127 | */ |
| 3128 | frame_header.blocksize = encoder->protected_->blocksize; |
| 3129 | frame_header.sample_rate = encoder->protected_->sample_rate; |
| 3130 | frame_header.channels = encoder->protected_->channels; |
| 3131 | frame_header.channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT; /* the default unless the encoder determines otherwise */ |
| 3132 | frame_header.bits_per_sample = encoder->protected_->bits_per_sample; |
| 3133 | frame_header.number_type = FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER; |
| 3134 | frame_header.number.frame_number = encoder->private_->current_frame_number; |
| 3135 | |
| 3136 | /* |
| 3137 | * Figure out what channel assignments to try |
| 3138 | */ |
| 3139 | if(encoder->protected_->do_mid_side_stereo) { |
| 3140 | if(encoder->protected_->loose_mid_side_stereo) { |
| 3141 | if(encoder->private_->loose_mid_side_stereo_frame_count == 0) { |
| 3142 | do_independent = true; |
| 3143 | do_mid_side = true; |
| 3144 | } |
| 3145 | else { |
| 3146 | do_independent = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT); |
| 3147 | do_mid_side = !do_independent; |
| 3148 | } |
| 3149 | } |
| 3150 | else { |
| 3151 | do_independent = true; |
| 3152 | do_mid_side = true; |
| 3153 | } |
| 3154 | } |
| 3155 | else { |
| 3156 | do_independent = true; |
| 3157 | do_mid_side = false; |
| 3158 | } |
| 3159 | |
| 3160 | FLAC__ASSERT(do_independent || do_mid_side); |
| 3161 | |
| 3162 | /* |
| 3163 | * Check for wasted bits; set effective bps for each subframe |
| 3164 | */ |
| 3165 | if(do_independent) { |
| 3166 | for(channel = 0; channel < encoder->protected_->channels; channel++) { |
| 3167 | unsigned w = get_wasted_bits_(encoder->private_->integer_signal[channel], encoder->protected_->blocksize); |
| 3168 | if (w > encoder->protected_->bits_per_sample) { |
| 3169 | w = encoder->protected_->bits_per_sample; |
| 3170 | } |
| 3171 | encoder->private_->subframe_workspace[channel][0].wasted_bits = encoder->private_->subframe_workspace[channel][1].wasted_bits = w; |
| 3172 | encoder->private_->subframe_bps[channel] = encoder->protected_->bits_per_sample - w; |
| 3173 | } |
| 3174 | } |
| 3175 | if(do_mid_side) { |
| 3176 | FLAC__ASSERT(encoder->protected_->channels == 2); |
| 3177 | for(channel = 0; channel < 2; channel++) { |
| 3178 | unsigned w = get_wasted_bits_(encoder->private_->integer_signal_mid_side[channel], encoder->protected_->blocksize); |
| 3179 | if (w > encoder->protected_->bits_per_sample) { |
| 3180 | w = encoder->protected_->bits_per_sample; |
| 3181 | } |
| 3182 | encoder->private_->subframe_workspace_mid_side[channel][0].wasted_bits = encoder->private_->subframe_workspace_mid_side[channel][1].wasted_bits = w; |
| 3183 | encoder->private_->subframe_bps_mid_side[channel] = encoder->protected_->bits_per_sample - w + (channel==0? 0:1); |
| 3184 | } |
| 3185 | } |
| 3186 | |
| 3187 | /* |
| 3188 | * First do a normal encoding pass of each independent channel |
| 3189 | */ |
| 3190 | if(do_independent) { |
| 3191 | for(channel = 0; channel < encoder->protected_->channels; channel++) { |
| 3192 | if(! |
| 3193 | process_subframe_( |
| 3194 | encoder, |
| 3195 | min_partition_order, |
| 3196 | max_partition_order, |
| 3197 | &frame_header, |
| 3198 | encoder->private_->subframe_bps[channel], |
| 3199 | encoder->private_->integer_signal[channel], |
| 3200 | encoder->private_->subframe_workspace_ptr[channel], |
| 3201 | encoder->private_->partitioned_rice_contents_workspace_ptr[channel], |
| 3202 | encoder->private_->residual_workspace[channel], |
| 3203 | encoder->private_->best_subframe+channel, |
| 3204 | encoder->private_->best_subframe_bits+channel |
| 3205 | ) |
| 3206 | ) |
| 3207 | return false; |
| 3208 | } |
| 3209 | } |
| 3210 | |
| 3211 | /* |
| 3212 | * Now do mid and side channels if requested |
| 3213 | */ |
| 3214 | if(do_mid_side) { |
| 3215 | FLAC__ASSERT(encoder->protected_->channels == 2); |
| 3216 | |
| 3217 | for(channel = 0; channel < 2; channel++) { |
| 3218 | if(! |
| 3219 | process_subframe_( |
| 3220 | encoder, |
| 3221 | min_partition_order, |
| 3222 | max_partition_order, |
| 3223 | &frame_header, |
| 3224 | encoder->private_->subframe_bps_mid_side[channel], |
| 3225 | encoder->private_->integer_signal_mid_side[channel], |
| 3226 | encoder->private_->subframe_workspace_ptr_mid_side[channel], |
| 3227 | encoder->private_->partitioned_rice_contents_workspace_ptr_mid_side[channel], |
| 3228 | encoder->private_->residual_workspace_mid_side[channel], |
| 3229 | encoder->private_->best_subframe_mid_side+channel, |
| 3230 | encoder->private_->best_subframe_bits_mid_side+channel |
| 3231 | ) |
| 3232 | ) |
| 3233 | return false; |
| 3234 | } |
| 3235 | } |
| 3236 | |
| 3237 | /* |
| 3238 | * Compose the frame bitbuffer |
| 3239 | */ |
| 3240 | if(do_mid_side) { |
| 3241 | unsigned left_bps = 0, right_bps = 0; /* initialized only to prevent superfluous compiler warning */ |
| 3242 | FLAC__Subframe *left_subframe = 0, *right_subframe = 0; /* initialized only to prevent superfluous compiler warning */ |
| 3243 | FLAC__ChannelAssignment channel_assignment; |
| 3244 | |
| 3245 | FLAC__ASSERT(encoder->protected_->channels == 2); |
| 3246 | |
| 3247 | if(encoder->protected_->loose_mid_side_stereo && encoder->private_->loose_mid_side_stereo_frame_count > 0) { |
| 3248 | channel_assignment = (encoder->private_->last_channel_assignment == FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT? FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT : FLAC__CHANNEL_ASSIGNMENT_MID_SIDE); |
| 3249 | } |
| 3250 | else { |
| 3251 | unsigned bits[4]; /* WATCHOUT - indexed by FLAC__ChannelAssignment */ |
| 3252 | unsigned min_bits; |
| 3253 | int ca; |
| 3254 | |
| 3255 | FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT == 0); |
| 3256 | FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE == 1); |
| 3257 | FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE == 2); |
| 3258 | FLAC__ASSERT(FLAC__CHANNEL_ASSIGNMENT_MID_SIDE == 3); |
| 3259 | FLAC__ASSERT(do_independent && do_mid_side); |
| 3260 | |
| 3261 | /* We have to figure out which channel assignent results in the smallest frame */ |
| 3262 | bits[FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits [1]; |
| 3263 | bits[FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE ] = encoder->private_->best_subframe_bits [0] + encoder->private_->best_subframe_bits_mid_side[1]; |
| 3264 | bits[FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE ] = encoder->private_->best_subframe_bits [1] + encoder->private_->best_subframe_bits_mid_side[1]; |
| 3265 | bits[FLAC__CHANNEL_ASSIGNMENT_MID_SIDE ] = encoder->private_->best_subframe_bits_mid_side[0] + encoder->private_->best_subframe_bits_mid_side[1]; |
| 3266 | |
| 3267 | channel_assignment = FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT; |
| 3268 | min_bits = bits[channel_assignment]; |
| 3269 | for(ca = 1; ca <= 3; ca++) { |
| 3270 | if(bits[ca] < min_bits) { |
| 3271 | min_bits = bits[ca]; |
| 3272 | channel_assignment = (FLAC__ChannelAssignment)ca; |
| 3273 | } |
| 3274 | } |
| 3275 | } |
| 3276 | |
| 3277 | frame_header.channel_assignment = channel_assignment; |
| 3278 | |
| 3279 | if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) { |
| 3280 | encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; |
| 3281 | return false; |
| 3282 | } |
| 3283 | |
| 3284 | switch(channel_assignment) { |
| 3285 | case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT: |
| 3286 | left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]]; |
| 3287 | right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]]; |
| 3288 | break; |
| 3289 | case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE: |
| 3290 | left_subframe = &encoder->private_->subframe_workspace [0][encoder->private_->best_subframe [0]]; |
| 3291 | right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]]; |
| 3292 | break; |
| 3293 | case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE: |
| 3294 | left_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]]; |
| 3295 | right_subframe = &encoder->private_->subframe_workspace [1][encoder->private_->best_subframe [1]]; |
| 3296 | break; |
| 3297 | case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE: |
| 3298 | left_subframe = &encoder->private_->subframe_workspace_mid_side[0][encoder->private_->best_subframe_mid_side[0]]; |
| 3299 | right_subframe = &encoder->private_->subframe_workspace_mid_side[1][encoder->private_->best_subframe_mid_side[1]]; |
| 3300 | break; |
| 3301 | default: |
| 3302 | FLAC__ASSERT(0); |
| 3303 | } |
| 3304 | |
| 3305 | switch(channel_assignment) { |
| 3306 | case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT: |
| 3307 | left_bps = encoder->private_->subframe_bps [0]; |
| 3308 | right_bps = encoder->private_->subframe_bps [1]; |
| 3309 | break; |
| 3310 | case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE: |
| 3311 | left_bps = encoder->private_->subframe_bps [0]; |
| 3312 | right_bps = encoder->private_->subframe_bps_mid_side[1]; |
| 3313 | break; |
| 3314 | case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE: |
| 3315 | left_bps = encoder->private_->subframe_bps_mid_side[1]; |
| 3316 | right_bps = encoder->private_->subframe_bps [1]; |
| 3317 | break; |
| 3318 | case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE: |
| 3319 | left_bps = encoder->private_->subframe_bps_mid_side[0]; |
| 3320 | right_bps = encoder->private_->subframe_bps_mid_side[1]; |
| 3321 | break; |
| 3322 | default: |
| 3323 | FLAC__ASSERT(0); |
| 3324 | } |
| 3325 | |
| 3326 | /* note that encoder_add_subframe_ sets the state for us in case of an error */ |
| 3327 | if(!add_subframe_(encoder, frame_header.blocksize, left_bps , left_subframe , encoder->private_->frame)) |
| 3328 | return false; |
| 3329 | if(!add_subframe_(encoder, frame_header.blocksize, right_bps, right_subframe, encoder->private_->frame)) |
| 3330 | return false; |
| 3331 | } |
| 3332 | else { |
| 3333 | if(!FLAC__frame_add_header(&frame_header, encoder->private_->frame)) { |
| 3334 | encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; |
| 3335 | return false; |
| 3336 | } |
| 3337 | |
| 3338 | for(channel = 0; channel < encoder->protected_->channels; channel++) { |
| 3339 | if(!add_subframe_(encoder, frame_header.blocksize, encoder->private_->subframe_bps[channel], &encoder->private_->subframe_workspace[channel][encoder->private_->best_subframe[channel]], encoder->private_->frame)) { |
| 3340 | /* the above function sets the state for us in case of an error */ |
| 3341 | return false; |
| 3342 | } |
| 3343 | } |
| 3344 | } |
| 3345 | |
| 3346 | if(encoder->protected_->loose_mid_side_stereo) { |
| 3347 | encoder->private_->loose_mid_side_stereo_frame_count++; |
| 3348 | if(encoder->private_->loose_mid_side_stereo_frame_count >= encoder->private_->loose_mid_side_stereo_frames) |
| 3349 | encoder->private_->loose_mid_side_stereo_frame_count = 0; |
| 3350 | } |
| 3351 | |
| 3352 | encoder->private_->last_channel_assignment = frame_header.channel_assignment; |
| 3353 | |
| 3354 | return true; |
| 3355 | } |
| 3356 | |
| 3357 | FLAC__bool process_subframe_( |
| 3358 | FLAC__StreamEncoder *encoder, |
| 3359 | unsigned min_partition_order, |
| 3360 | unsigned max_partition_order, |
| 3361 | const FLAC__FrameHeader *frame_header, |
| 3362 | unsigned subframe_bps, |
| 3363 | const FLAC__int32 integer_signal[], |
| 3364 | FLAC__Subframe *subframe[2], |
| 3365 | FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents[2], |
| 3366 | FLAC__int32 *residual[2], |
| 3367 | unsigned *best_subframe, |
| 3368 | unsigned *best_bits |
| 3369 | ) |
| 3370 | { |
| 3371 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 3372 | float fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]; |
| 3373 | #else |
| 3374 | FLAC__fixedpoint fixed_residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]; |
| 3375 | #endif |
| 3376 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 3377 | double lpc_residual_bits_per_sample; |
| 3378 | FLAC__real autoc[FLAC__MAX_LPC_ORDER+1]; /* WATCHOUT: the size is important even though encoder->protected_->max_lpc_order might be less; some asm and x86 intrinsic routines need all the space */ |
| 3379 | double lpc_error[FLAC__MAX_LPC_ORDER]; |
| 3380 | unsigned min_lpc_order, max_lpc_order, lpc_order; |
| 3381 | unsigned min_qlp_coeff_precision, max_qlp_coeff_precision, qlp_coeff_precision; |
| 3382 | #endif |
| 3383 | unsigned min_fixed_order, max_fixed_order, guess_fixed_order, fixed_order; |
| 3384 | unsigned rice_parameter; |
| 3385 | unsigned _candidate_bits, _best_bits; |
| 3386 | unsigned _best_subframe; |
| 3387 | /* only use RICE2 partitions if stream bps > 16 */ |
| 3388 | const unsigned rice_parameter_limit = FLAC__stream_encoder_get_bits_per_sample(encoder) > 16? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER : FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER; |
| 3389 | |
| 3390 | FLAC__ASSERT(frame_header->blocksize > 0); |
| 3391 | |
| 3392 | /* verbatim subframe is the baseline against which we measure other compressed subframes */ |
| 3393 | _best_subframe = 0; |
| 3394 | if(encoder->private_->disable_verbatim_subframes && frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) |
| 3395 | _best_bits = UINT_MAX; |
| 3396 | else |
| 3397 | _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]); |
| 3398 | |
| 3399 | if(frame_header->blocksize >= FLAC__MAX_FIXED_ORDER) { |
| 3400 | unsigned signal_is_constant = false; |
| 3401 | if(subframe_bps + 4 + FLAC__bitmath_ilog2((frame_header->blocksize-FLAC__MAX_FIXED_ORDER)|1) <= 32) |
| 3402 | guess_fixed_order = encoder->private_->local_fixed_compute_best_predictor(integer_signal+FLAC__MAX_FIXED_ORDER, frame_header->blocksize-FLAC__MAX_FIXED_ORDER, fixed_residual_bits_per_sample); |
| 3403 | else |
| 3404 | guess_fixed_order = encoder->private_->local_fixed_compute_best_predictor_wide(integer_signal+FLAC__MAX_FIXED_ORDER, frame_header->blocksize-FLAC__MAX_FIXED_ORDER, fixed_residual_bits_per_sample); |
| 3405 | /* check for constant subframe */ |
| 3406 | if( |
| 3407 | !encoder->private_->disable_constant_subframes && |
| 3408 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 3409 | fixed_residual_bits_per_sample[1] == 0.0 |
| 3410 | #else |
| 3411 | fixed_residual_bits_per_sample[1] == FLAC__FP_ZERO |
| 3412 | #endif |
| 3413 | ) { |
| 3414 | /* the above means it's possible all samples are the same value; now double-check it: */ |
| 3415 | unsigned i; |
| 3416 | signal_is_constant = true; |
| 3417 | for(i = 1; i < frame_header->blocksize; i++) { |
| 3418 | if(integer_signal[0] != integer_signal[i]) { |
| 3419 | signal_is_constant = false; |
| 3420 | break; |
| 3421 | } |
| 3422 | } |
| 3423 | } |
| 3424 | if(signal_is_constant) { |
| 3425 | _candidate_bits = evaluate_constant_subframe_(encoder, integer_signal[0], frame_header->blocksize, subframe_bps, subframe[!_best_subframe]); |
| 3426 | if(_candidate_bits < _best_bits) { |
| 3427 | _best_subframe = !_best_subframe; |
| 3428 | _best_bits = _candidate_bits; |
| 3429 | } |
| 3430 | } |
| 3431 | else { |
| 3432 | if(!encoder->private_->disable_fixed_subframes || (encoder->protected_->max_lpc_order == 0 && _best_bits == UINT_MAX)) { |
| 3433 | /* encode fixed */ |
| 3434 | if(encoder->protected_->do_exhaustive_model_search) { |
| 3435 | min_fixed_order = 0; |
| 3436 | max_fixed_order = FLAC__MAX_FIXED_ORDER; |
| 3437 | } |
| 3438 | else { |
| 3439 | min_fixed_order = max_fixed_order = guess_fixed_order; |
| 3440 | } |
| 3441 | if(max_fixed_order >= frame_header->blocksize) |
| 3442 | max_fixed_order = frame_header->blocksize - 1; |
| 3443 | for(fixed_order = min_fixed_order; fixed_order <= max_fixed_order; fixed_order++) { |
| 3444 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 3445 | if(fixed_residual_bits_per_sample[fixed_order] >= (float)subframe_bps) |
| 3446 | continue; /* don't even try */ |
| 3447 | rice_parameter = (fixed_residual_bits_per_sample[fixed_order] > 0.0)? (unsigned)(fixed_residual_bits_per_sample[fixed_order]+0.5) : 0; /* 0.5 is for rounding */ |
| 3448 | #else |
| 3449 | if(FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]) >= (int)subframe_bps) |
| 3450 | continue; /* don't even try */ |
| 3451 | rice_parameter = (fixed_residual_bits_per_sample[fixed_order] > FLAC__FP_ZERO)? (unsigned)FLAC__fixedpoint_trunc(fixed_residual_bits_per_sample[fixed_order]+FLAC__FP_ONE_HALF) : 0; /* 0.5 is for rounding */ |
| 3452 | #endif |
| 3453 | rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */ |
| 3454 | if(rice_parameter >= rice_parameter_limit) { |
| 3455 | #ifdef DEBUG_VERBOSE |
| 3456 | fprintf(stderr, "clipping rice_parameter (%u -> %u) @0\n", rice_parameter, rice_parameter_limit - 1); |
| 3457 | #endif |
| 3458 | rice_parameter = rice_parameter_limit - 1; |
| 3459 | } |
| 3460 | _candidate_bits = |
| 3461 | evaluate_fixed_subframe_( |
| 3462 | encoder, |
| 3463 | integer_signal, |
| 3464 | residual[!_best_subframe], |
| 3465 | encoder->private_->abs_residual_partition_sums, |
| 3466 | encoder->private_->raw_bits_per_partition, |
| 3467 | frame_header->blocksize, |
| 3468 | subframe_bps, |
| 3469 | fixed_order, |
| 3470 | rice_parameter, |
| 3471 | rice_parameter_limit, |
| 3472 | min_partition_order, |
| 3473 | max_partition_order, |
| 3474 | encoder->protected_->do_escape_coding, |
| 3475 | encoder->protected_->rice_parameter_search_dist, |
| 3476 | subframe[!_best_subframe], |
| 3477 | partitioned_rice_contents[!_best_subframe] |
| 3478 | ); |
| 3479 | if(_candidate_bits < _best_bits) { |
| 3480 | _best_subframe = !_best_subframe; |
| 3481 | _best_bits = _candidate_bits; |
| 3482 | } |
| 3483 | } |
| 3484 | } |
| 3485 | |
| 3486 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 3487 | /* encode lpc */ |
| 3488 | if(encoder->protected_->max_lpc_order > 0) { |
| 3489 | if(encoder->protected_->max_lpc_order >= frame_header->blocksize) |
| 3490 | max_lpc_order = frame_header->blocksize-1; |
| 3491 | else |
| 3492 | max_lpc_order = encoder->protected_->max_lpc_order; |
| 3493 | if(max_lpc_order > 0) { |
| 3494 | unsigned a; |
| 3495 | for (a = 0; a < encoder->protected_->num_apodizations; a++) { |
| 3496 | FLAC__lpc_window_data(integer_signal, encoder->private_->window[a], encoder->private_->windowed_signal, frame_header->blocksize); |
| 3497 | encoder->private_->local_lpc_compute_autocorrelation(encoder->private_->windowed_signal, frame_header->blocksize, max_lpc_order+1, autoc); |
| 3498 | /* if autoc[0] == 0.0, the signal is constant and we usually won't get here, but it can happen */ |
| 3499 | if(autoc[0] != 0.0) { |
| 3500 | FLAC__lpc_compute_lp_coefficients(autoc, &max_lpc_order, encoder->private_->lp_coeff, lpc_error); |
| 3501 | if(encoder->protected_->do_exhaustive_model_search) { |
| 3502 | min_lpc_order = 1; |
| 3503 | } |
| 3504 | else { |
| 3505 | const unsigned guess_lpc_order = |
| 3506 | FLAC__lpc_compute_best_order( |
| 3507 | lpc_error, |
| 3508 | max_lpc_order, |
| 3509 | frame_header->blocksize, |
| 3510 | subframe_bps + ( |
| 3511 | encoder->protected_->do_qlp_coeff_prec_search? |
| 3512 | FLAC__MIN_QLP_COEFF_PRECISION : /* have to guess; use the min possible size to avoid accidentally favoring lower orders */ |
| 3513 | encoder->protected_->qlp_coeff_precision |
| 3514 | ) |
| 3515 | ); |
| 3516 | min_lpc_order = max_lpc_order = guess_lpc_order; |
| 3517 | } |
| 3518 | if(max_lpc_order >= frame_header->blocksize) |
| 3519 | max_lpc_order = frame_header->blocksize - 1; |
| 3520 | for(lpc_order = min_lpc_order; lpc_order <= max_lpc_order; lpc_order++) { |
| 3521 | lpc_residual_bits_per_sample = FLAC__lpc_compute_expected_bits_per_residual_sample(lpc_error[lpc_order-1], frame_header->blocksize-lpc_order); |
| 3522 | if(lpc_residual_bits_per_sample >= (double)subframe_bps) |
| 3523 | continue; /* don't even try */ |
| 3524 | rice_parameter = (lpc_residual_bits_per_sample > 0.0)? (unsigned)(lpc_residual_bits_per_sample+0.5) : 0; /* 0.5 is for rounding */ |
| 3525 | rice_parameter++; /* to account for the signed->unsigned conversion during rice coding */ |
| 3526 | if(rice_parameter >= rice_parameter_limit) { |
| 3527 | #ifdef DEBUG_VERBOSE |
| 3528 | fprintf(stderr, "clipping rice_parameter (%u -> %u) @1\n", rice_parameter, rice_parameter_limit - 1); |
| 3529 | #endif |
| 3530 | rice_parameter = rice_parameter_limit - 1; |
| 3531 | } |
| 3532 | if(encoder->protected_->do_qlp_coeff_prec_search) { |
| 3533 | min_qlp_coeff_precision = FLAC__MIN_QLP_COEFF_PRECISION; |
| 3534 | /* try to keep qlp coeff precision such that only 32-bit math is required for decode of <=16bps(+1bps for side channel) streams */ |
| 3535 | if(subframe_bps <= 17) { |
| 3536 | max_qlp_coeff_precision = flac_min(32 - subframe_bps - FLAC__bitmath_ilog2(lpc_order), FLAC__MAX_QLP_COEFF_PRECISION); |
| 3537 | max_qlp_coeff_precision = flac_max(max_qlp_coeff_precision, min_qlp_coeff_precision); |
| 3538 | } |
| 3539 | else |
| 3540 | max_qlp_coeff_precision = FLAC__MAX_QLP_COEFF_PRECISION; |
| 3541 | } |
| 3542 | else { |
| 3543 | min_qlp_coeff_precision = max_qlp_coeff_precision = encoder->protected_->qlp_coeff_precision; |
| 3544 | } |
| 3545 | for(qlp_coeff_precision = min_qlp_coeff_precision; qlp_coeff_precision <= max_qlp_coeff_precision; qlp_coeff_precision++) { |
| 3546 | _candidate_bits = |
| 3547 | evaluate_lpc_subframe_( |
| 3548 | encoder, |
| 3549 | integer_signal, |
| 3550 | residual[!_best_subframe], |
| 3551 | encoder->private_->abs_residual_partition_sums, |
| 3552 | encoder->private_->raw_bits_per_partition, |
| 3553 | encoder->private_->lp_coeff[lpc_order-1], |
| 3554 | frame_header->blocksize, |
| 3555 | subframe_bps, |
| 3556 | lpc_order, |
| 3557 | qlp_coeff_precision, |
| 3558 | rice_parameter, |
| 3559 | rice_parameter_limit, |
| 3560 | min_partition_order, |
| 3561 | max_partition_order, |
| 3562 | encoder->protected_->do_escape_coding, |
| 3563 | encoder->protected_->rice_parameter_search_dist, |
| 3564 | subframe[!_best_subframe], |
| 3565 | partitioned_rice_contents[!_best_subframe] |
| 3566 | ); |
| 3567 | if(_candidate_bits > 0) { /* if == 0, there was a problem quantizing the lpcoeffs */ |
| 3568 | if(_candidate_bits < _best_bits) { |
| 3569 | _best_subframe = !_best_subframe; |
| 3570 | _best_bits = _candidate_bits; |
| 3571 | } |
| 3572 | } |
| 3573 | } |
| 3574 | } |
| 3575 | } |
| 3576 | } |
| 3577 | } |
| 3578 | } |
| 3579 | #endif /* !defined FLAC__INTEGER_ONLY_LIBRARY */ |
| 3580 | } |
| 3581 | } |
| 3582 | |
| 3583 | /* under rare circumstances this can happen when all but lpc subframe types are disabled: */ |
| 3584 | if(_best_bits == UINT_MAX) { |
| 3585 | FLAC__ASSERT(_best_subframe == 0); |
| 3586 | _best_bits = evaluate_verbatim_subframe_(encoder, integer_signal, frame_header->blocksize, subframe_bps, subframe[_best_subframe]); |
| 3587 | } |
| 3588 | |
| 3589 | *best_subframe = _best_subframe; |
| 3590 | *best_bits = _best_bits; |
| 3591 | |
| 3592 | return true; |
| 3593 | } |
| 3594 | |
| 3595 | FLAC__bool add_subframe_( |
| 3596 | FLAC__StreamEncoder *encoder, |
| 3597 | unsigned blocksize, |
| 3598 | unsigned subframe_bps, |
| 3599 | const FLAC__Subframe *subframe, |
| 3600 | FLAC__BitWriter *frame |
| 3601 | ) |
| 3602 | { |
| 3603 | switch(subframe->type) { |
| 3604 | case FLAC__SUBFRAME_TYPE_CONSTANT: |
| 3605 | if(!FLAC__subframe_add_constant(&(subframe->data.constant), subframe_bps, subframe->wasted_bits, frame)) { |
| 3606 | encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; |
| 3607 | return false; |
| 3608 | } |
| 3609 | break; |
| 3610 | case FLAC__SUBFRAME_TYPE_FIXED: |
| 3611 | if(!FLAC__subframe_add_fixed(&(subframe->data.fixed), blocksize - subframe->data.fixed.order, subframe_bps, subframe->wasted_bits, frame)) { |
| 3612 | encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; |
| 3613 | return false; |
| 3614 | } |
| 3615 | break; |
| 3616 | case FLAC__SUBFRAME_TYPE_LPC: |
| 3617 | if(!FLAC__subframe_add_lpc(&(subframe->data.lpc), blocksize - subframe->data.lpc.order, subframe_bps, subframe->wasted_bits, frame)) { |
| 3618 | encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; |
| 3619 | return false; |
| 3620 | } |
| 3621 | break; |
| 3622 | case FLAC__SUBFRAME_TYPE_VERBATIM: |
| 3623 | if(!FLAC__subframe_add_verbatim(&(subframe->data.verbatim), blocksize, subframe_bps, subframe->wasted_bits, frame)) { |
| 3624 | encoder->protected_->state = FLAC__STREAM_ENCODER_FRAMING_ERROR; |
| 3625 | return false; |
| 3626 | } |
| 3627 | break; |
| 3628 | default: |
| 3629 | FLAC__ASSERT(0); |
| 3630 | } |
| 3631 | |
| 3632 | return true; |
| 3633 | } |
| 3634 | |
| 3635 | #define SPOTCHECK_ESTIMATE 0 |
| 3636 | #if SPOTCHECK_ESTIMATE |
| 3637 | static void spotcheck_subframe_estimate_( |
| 3638 | FLAC__StreamEncoder *encoder, |
| 3639 | unsigned blocksize, |
| 3640 | unsigned subframe_bps, |
| 3641 | const FLAC__Subframe *subframe, |
| 3642 | unsigned estimate |
| 3643 | ) |
| 3644 | { |
| 3645 | FLAC__bool ret; |
| 3646 | FLAC__BitWriter *frame = FLAC__bitwriter_new(); |
| 3647 | if(frame == 0) { |
| 3648 | fprintf(stderr, "EST: can't allocate frame\n"); |
| 3649 | return; |
| 3650 | } |
| 3651 | if(!FLAC__bitwriter_init(frame)) { |
| 3652 | fprintf(stderr, "EST: can't init frame\n"); |
| 3653 | return; |
| 3654 | } |
| 3655 | ret = add_subframe_(encoder, blocksize, subframe_bps, subframe, frame); |
| 3656 | FLAC__ASSERT(ret); |
| 3657 | { |
| 3658 | const unsigned actual = FLAC__bitwriter_get_input_bits_unconsumed(frame); |
| 3659 | if(estimate != actual) |
| 3660 | fprintf(stderr, "EST: bad, frame#%u sub#%%d type=%8s est=%u, actual=%u, delta=%d\n", encoder->private_->current_frame_number, FLAC__SubframeTypeString[subframe->type], estimate, actual, (int)actual-(int)estimate); |
| 3661 | } |
| 3662 | FLAC__bitwriter_delete(frame); |
| 3663 | } |
| 3664 | #endif |
| 3665 | |
| 3666 | unsigned evaluate_constant_subframe_( |
| 3667 | FLAC__StreamEncoder *encoder, |
| 3668 | const FLAC__int32 signal, |
| 3669 | unsigned blocksize, |
| 3670 | unsigned subframe_bps, |
| 3671 | FLAC__Subframe *subframe |
| 3672 | ) |
| 3673 | { |
| 3674 | unsigned estimate; |
| 3675 | subframe->type = FLAC__SUBFRAME_TYPE_CONSTANT; |
| 3676 | subframe->data.constant.value = signal; |
| 3677 | |
| 3678 | estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + subframe_bps; |
| 3679 | |
| 3680 | #if SPOTCHECK_ESTIMATE |
| 3681 | spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate); |
| 3682 | #else |
| 3683 | (void)encoder, (void)blocksize; |
| 3684 | #endif |
| 3685 | |
| 3686 | return estimate; |
| 3687 | } |
| 3688 | |
| 3689 | unsigned evaluate_fixed_subframe_( |
| 3690 | FLAC__StreamEncoder *encoder, |
| 3691 | const FLAC__int32 signal[], |
| 3692 | FLAC__int32 residual[], |
| 3693 | FLAC__uint64 abs_residual_partition_sums[], |
| 3694 | unsigned raw_bits_per_partition[], |
| 3695 | unsigned blocksize, |
| 3696 | unsigned subframe_bps, |
| 3697 | unsigned order, |
| 3698 | unsigned rice_parameter, |
| 3699 | unsigned rice_parameter_limit, |
| 3700 | unsigned min_partition_order, |
| 3701 | unsigned max_partition_order, |
| 3702 | FLAC__bool do_escape_coding, |
| 3703 | unsigned rice_parameter_search_dist, |
| 3704 | FLAC__Subframe *subframe, |
| 3705 | FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents |
| 3706 | ) |
| 3707 | { |
| 3708 | unsigned i, residual_bits, estimate; |
| 3709 | const unsigned residual_samples = blocksize - order; |
| 3710 | |
| 3711 | FLAC__fixed_compute_residual(signal+order, residual_samples, order, residual); |
| 3712 | |
| 3713 | subframe->type = FLAC__SUBFRAME_TYPE_FIXED; |
| 3714 | |
| 3715 | subframe->data.fixed.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE; |
| 3716 | subframe->data.fixed.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents; |
| 3717 | subframe->data.fixed.residual = residual; |
| 3718 | |
| 3719 | residual_bits = |
| 3720 | find_best_partition_order_( |
| 3721 | encoder->private_, |
| 3722 | residual, |
| 3723 | abs_residual_partition_sums, |
| 3724 | raw_bits_per_partition, |
| 3725 | residual_samples, |
| 3726 | order, |
| 3727 | rice_parameter, |
| 3728 | rice_parameter_limit, |
| 3729 | min_partition_order, |
| 3730 | max_partition_order, |
| 3731 | subframe_bps, |
| 3732 | do_escape_coding, |
| 3733 | rice_parameter_search_dist, |
| 3734 | &subframe->data.fixed.entropy_coding_method |
| 3735 | ); |
| 3736 | |
| 3737 | subframe->data.fixed.order = order; |
| 3738 | for(i = 0; i < order; i++) |
| 3739 | subframe->data.fixed.warmup[i] = signal[i]; |
| 3740 | |
| 3741 | estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (order * subframe_bps) + residual_bits; |
| 3742 | |
| 3743 | #if SPOTCHECK_ESTIMATE |
| 3744 | spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate); |
| 3745 | #endif |
| 3746 | |
| 3747 | return estimate; |
| 3748 | } |
| 3749 | |
| 3750 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 3751 | unsigned evaluate_lpc_subframe_( |
| 3752 | FLAC__StreamEncoder *encoder, |
| 3753 | const FLAC__int32 signal[], |
| 3754 | FLAC__int32 residual[], |
| 3755 | FLAC__uint64 abs_residual_partition_sums[], |
| 3756 | unsigned raw_bits_per_partition[], |
| 3757 | const FLAC__real lp_coeff[], |
| 3758 | unsigned blocksize, |
| 3759 | unsigned subframe_bps, |
| 3760 | unsigned order, |
| 3761 | unsigned qlp_coeff_precision, |
| 3762 | unsigned rice_parameter, |
| 3763 | unsigned rice_parameter_limit, |
| 3764 | unsigned min_partition_order, |
| 3765 | unsigned max_partition_order, |
| 3766 | FLAC__bool do_escape_coding, |
| 3767 | unsigned rice_parameter_search_dist, |
| 3768 | FLAC__Subframe *subframe, |
| 3769 | FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents |
| 3770 | ) |
| 3771 | { |
| 3772 | FLAC__int32 qlp_coeff[FLAC__MAX_LPC_ORDER]; /* WATCHOUT: the size is important; some x86 intrinsic routines need more than lpc order elements */ |
| 3773 | unsigned i, residual_bits, estimate; |
| 3774 | int quantization, ret; |
| 3775 | const unsigned residual_samples = blocksize - order; |
| 3776 | |
| 3777 | /* try to keep qlp coeff precision such that only 32-bit math is required for decode of <=16bps(+1bps for side channel) streams */ |
| 3778 | if(subframe_bps <= 17) { |
| 3779 | FLAC__ASSERT(order > 0); |
| 3780 | FLAC__ASSERT(order <= FLAC__MAX_LPC_ORDER); |
| 3781 | qlp_coeff_precision = flac_min(qlp_coeff_precision, 32 - subframe_bps - FLAC__bitmath_ilog2(order)); |
| 3782 | } |
| 3783 | |
| 3784 | ret = FLAC__lpc_quantize_coefficients(lp_coeff, order, qlp_coeff_precision, qlp_coeff, &quantization); |
| 3785 | if(ret != 0) |
| 3786 | return 0; /* this is a hack to indicate to the caller that we can't do lp at this order on this subframe */ |
| 3787 | |
| 3788 | if(subframe_bps + qlp_coeff_precision + FLAC__bitmath_ilog2(order) <= 32) |
| 3789 | if(subframe_bps <= 16 && qlp_coeff_precision <= 16) |
| 3790 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_16bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual); |
| 3791 | else |
| 3792 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients(signal+order, residual_samples, qlp_coeff, order, quantization, residual); |
| 3793 | else |
| 3794 | encoder->private_->local_lpc_compute_residual_from_qlp_coefficients_64bit(signal+order, residual_samples, qlp_coeff, order, quantization, residual); |
| 3795 | |
| 3796 | subframe->type = FLAC__SUBFRAME_TYPE_LPC; |
| 3797 | |
| 3798 | subframe->data.lpc.entropy_coding_method.type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE; |
| 3799 | subframe->data.lpc.entropy_coding_method.data.partitioned_rice.contents = partitioned_rice_contents; |
| 3800 | subframe->data.lpc.residual = residual; |
| 3801 | |
| 3802 | residual_bits = |
| 3803 | find_best_partition_order_( |
| 3804 | encoder->private_, |
| 3805 | residual, |
| 3806 | abs_residual_partition_sums, |
| 3807 | raw_bits_per_partition, |
| 3808 | residual_samples, |
| 3809 | order, |
| 3810 | rice_parameter, |
| 3811 | rice_parameter_limit, |
| 3812 | min_partition_order, |
| 3813 | max_partition_order, |
| 3814 | subframe_bps, |
| 3815 | do_escape_coding, |
| 3816 | rice_parameter_search_dist, |
| 3817 | &subframe->data.lpc.entropy_coding_method |
| 3818 | ); |
| 3819 | |
| 3820 | subframe->data.lpc.order = order; |
| 3821 | subframe->data.lpc.qlp_coeff_precision = qlp_coeff_precision; |
| 3822 | subframe->data.lpc.quantization_level = quantization; |
| 3823 | memcpy(subframe->data.lpc.qlp_coeff, qlp_coeff, sizeof(FLAC__int32)*FLAC__MAX_LPC_ORDER); |
| 3824 | for(i = 0; i < order; i++) |
| 3825 | subframe->data.lpc.warmup[i] = signal[i]; |
| 3826 | |
| 3827 | estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN + FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN + (order * (qlp_coeff_precision + subframe_bps)) + residual_bits; |
| 3828 | |
| 3829 | #if SPOTCHECK_ESTIMATE |
| 3830 | spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate); |
| 3831 | #endif |
| 3832 | |
| 3833 | return estimate; |
| 3834 | } |
| 3835 | #endif |
| 3836 | |
| 3837 | unsigned evaluate_verbatim_subframe_( |
| 3838 | FLAC__StreamEncoder *encoder, |
| 3839 | const FLAC__int32 signal[], |
| 3840 | unsigned blocksize, |
| 3841 | unsigned subframe_bps, |
| 3842 | FLAC__Subframe *subframe |
| 3843 | ) |
| 3844 | { |
| 3845 | unsigned estimate; |
| 3846 | |
| 3847 | subframe->type = FLAC__SUBFRAME_TYPE_VERBATIM; |
| 3848 | |
| 3849 | subframe->data.verbatim.data = signal; |
| 3850 | |
| 3851 | estimate = FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN + subframe->wasted_bits + (blocksize * subframe_bps); |
| 3852 | |
| 3853 | #if SPOTCHECK_ESTIMATE |
| 3854 | spotcheck_subframe_estimate_(encoder, blocksize, subframe_bps, subframe, estimate); |
| 3855 | #else |
| 3856 | (void)encoder; |
| 3857 | #endif |
| 3858 | |
| 3859 | return estimate; |
| 3860 | } |
| 3861 | |
| 3862 | unsigned find_best_partition_order_( |
| 3863 | FLAC__StreamEncoderPrivate *private_, |
| 3864 | const FLAC__int32 residual[], |
| 3865 | FLAC__uint64 abs_residual_partition_sums[], |
| 3866 | unsigned raw_bits_per_partition[], |
| 3867 | unsigned residual_samples, |
| 3868 | unsigned predictor_order, |
| 3869 | unsigned rice_parameter, |
| 3870 | unsigned rice_parameter_limit, |
| 3871 | unsigned min_partition_order, |
| 3872 | unsigned max_partition_order, |
| 3873 | unsigned bps, |
| 3874 | FLAC__bool do_escape_coding, |
| 3875 | unsigned rice_parameter_search_dist, |
| 3876 | FLAC__EntropyCodingMethod *best_ecm |
| 3877 | ) |
| 3878 | { |
| 3879 | unsigned residual_bits, best_residual_bits = 0; |
| 3880 | unsigned best_parameters_index = 0; |
| 3881 | unsigned best_partition_order = 0; |
| 3882 | const unsigned blocksize = residual_samples + predictor_order; |
| 3883 | |
| 3884 | max_partition_order = FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(max_partition_order, blocksize, predictor_order); |
| 3885 | min_partition_order = flac_min(min_partition_order, max_partition_order); |
| 3886 | |
| 3887 | private_->local_precompute_partition_info_sums(residual, abs_residual_partition_sums, residual_samples, predictor_order, min_partition_order, max_partition_order, bps); |
| 3888 | |
| 3889 | if(do_escape_coding) |
| 3890 | precompute_partition_info_escapes_(residual, raw_bits_per_partition, residual_samples, predictor_order, min_partition_order, max_partition_order); |
| 3891 | |
| 3892 | { |
| 3893 | int partition_order; |
| 3894 | unsigned sum; |
| 3895 | |
| 3896 | for(partition_order = (int)max_partition_order, sum = 0; partition_order >= (int)min_partition_order; partition_order--) { |
| 3897 | if(! |
| 3898 | set_partitioned_rice_( |
| 3899 | #ifdef EXACT_RICE_BITS_CALCULATION |
| 3900 | residual, |
| 3901 | #endif |
| 3902 | abs_residual_partition_sums+sum, |
| 3903 | raw_bits_per_partition+sum, |
| 3904 | residual_samples, |
| 3905 | predictor_order, |
| 3906 | rice_parameter, |
| 3907 | rice_parameter_limit, |
| 3908 | rice_parameter_search_dist, |
| 3909 | (unsigned)partition_order, |
| 3910 | do_escape_coding, |
| 3911 | &private_->partitioned_rice_contents_extra[!best_parameters_index], |
| 3912 | &residual_bits |
| 3913 | ) |
| 3914 | ) |
| 3915 | { |
| 3916 | FLAC__ASSERT(best_residual_bits != 0); |
| 3917 | break; |
| 3918 | } |
| 3919 | sum += 1u << partition_order; |
| 3920 | if(best_residual_bits == 0 || residual_bits < best_residual_bits) { |
| 3921 | best_residual_bits = residual_bits; |
| 3922 | best_parameters_index = !best_parameters_index; |
| 3923 | best_partition_order = partition_order; |
| 3924 | } |
| 3925 | } |
| 3926 | } |
| 3927 | |
| 3928 | best_ecm->data.partitioned_rice.order = best_partition_order; |
| 3929 | |
| 3930 | { |
| 3931 | /* |
| 3932 | * We are allowed to de-const the pointer based on our special |
| 3933 | * knowledge; it is const to the outside world. |
| 3934 | */ |
| 3935 | FLAC__EntropyCodingMethod_PartitionedRiceContents* prc = (FLAC__EntropyCodingMethod_PartitionedRiceContents*)best_ecm->data.partitioned_rice.contents; |
| 3936 | unsigned partition; |
| 3937 | |
| 3938 | /* save best parameters and raw_bits */ |
| 3939 | FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(prc, flac_max(6u, best_partition_order)); |
| 3940 | memcpy(prc->parameters, private_->partitioned_rice_contents_extra[best_parameters_index].parameters, sizeof(unsigned)*(1<<(best_partition_order))); |
| 3941 | if(do_escape_coding) |
| 3942 | memcpy(prc->raw_bits, private_->partitioned_rice_contents_extra[best_parameters_index].raw_bits, sizeof(unsigned)*(1<<(best_partition_order))); |
| 3943 | /* |
| 3944 | * Now need to check if the type should be changed to |
| 3945 | * FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2 based on the |
| 3946 | * size of the rice parameters. |
| 3947 | */ |
| 3948 | for(partition = 0; partition < (1u<<best_partition_order); partition++) { |
| 3949 | if(prc->parameters[partition] >= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) { |
| 3950 | best_ecm->type = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2; |
| 3951 | break; |
| 3952 | } |
| 3953 | } |
| 3954 | } |
| 3955 | |
| 3956 | return best_residual_bits; |
| 3957 | } |
| 3958 | |
| 3959 | void precompute_partition_info_sums_( |
| 3960 | const FLAC__int32 residual[], |
| 3961 | FLAC__uint64 abs_residual_partition_sums[], |
| 3962 | unsigned residual_samples, |
| 3963 | unsigned predictor_order, |
| 3964 | unsigned min_partition_order, |
| 3965 | unsigned max_partition_order, |
| 3966 | unsigned bps |
| 3967 | ) |
| 3968 | { |
| 3969 | const unsigned default_partition_samples = (residual_samples + predictor_order) >> max_partition_order; |
| 3970 | unsigned partitions = 1u << max_partition_order; |
| 3971 | |
| 3972 | FLAC__ASSERT(default_partition_samples > predictor_order); |
| 3973 | |
| 3974 | /* first do max_partition_order */ |
| 3975 | { |
| 3976 | const unsigned threshold = 32 - FLAC__bitmath_ilog2(default_partition_samples); |
| 3977 | unsigned partition, residual_sample, end = (unsigned)(-(int)predictor_order); |
| 3978 | /* WATCHOUT: "bps + FLAC__MAX_EXTRA_RESIDUAL_BPS" is the maximum assumed size of the average residual magnitude */ |
| 3979 | if(bps + FLAC__MAX_EXTRA_RESIDUAL_BPS < threshold) { |
| 3980 | for(partition = residual_sample = 0; partition < partitions; partition++) { |
| 3981 | FLAC__uint32 abs_residual_partition_sum = 0; |
| 3982 | end += default_partition_samples; |
| 3983 | for( ; residual_sample < end; residual_sample++) |
| 3984 | abs_residual_partition_sum += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */ |
| 3985 | abs_residual_partition_sums[partition] = abs_residual_partition_sum; |
| 3986 | } |
| 3987 | } |
| 3988 | else { /* have to pessimistically use 64 bits for accumulator */ |
| 3989 | for(partition = residual_sample = 0; partition < partitions; partition++) { |
| 3990 | FLAC__uint64 abs_residual_partition_sum64 = 0; |
| 3991 | end += default_partition_samples; |
| 3992 | for( ; residual_sample < end; residual_sample++) |
| 3993 | abs_residual_partition_sum64 += abs(residual[residual_sample]); /* abs(INT_MIN) is undefined, but if the residual is INT_MIN we have bigger problems */ |
| 3994 | abs_residual_partition_sums[partition] = abs_residual_partition_sum64; |
| 3995 | } |
| 3996 | } |
| 3997 | } |
| 3998 | |
| 3999 | /* now merge partitions for lower orders */ |
| 4000 | { |
| 4001 | unsigned from_partition = 0, to_partition = partitions; |
| 4002 | int partition_order; |
| 4003 | for(partition_order = (int)max_partition_order - 1; partition_order >= (int)min_partition_order; partition_order--) { |
| 4004 | unsigned i; |
| 4005 | partitions >>= 1; |
| 4006 | for(i = 0; i < partitions; i++) { |
| 4007 | abs_residual_partition_sums[to_partition++] = |
| 4008 | abs_residual_partition_sums[from_partition ] + |
| 4009 | abs_residual_partition_sums[from_partition+1]; |
| 4010 | from_partition += 2; |
| 4011 | } |
| 4012 | } |
| 4013 | } |
| 4014 | } |
| 4015 | |
| 4016 | void precompute_partition_info_escapes_( |
| 4017 | const FLAC__int32 residual[], |
| 4018 | unsigned raw_bits_per_partition[], |
| 4019 | unsigned residual_samples, |
| 4020 | unsigned predictor_order, |
| 4021 | unsigned min_partition_order, |
| 4022 | unsigned max_partition_order |
| 4023 | ) |
| 4024 | { |
| 4025 | int partition_order; |
| 4026 | unsigned from_partition, to_partition = 0; |
| 4027 | const unsigned blocksize = residual_samples + predictor_order; |
| 4028 | |
| 4029 | /* first do max_partition_order */ |
| 4030 | for(partition_order = (int)max_partition_order; partition_order >= 0; partition_order--) { |
| 4031 | FLAC__int32 r; |
| 4032 | FLAC__uint32 rmax; |
| 4033 | unsigned partition, partition_sample, partition_samples, residual_sample; |
| 4034 | const unsigned partitions = 1u << partition_order; |
| 4035 | const unsigned default_partition_samples = blocksize >> partition_order; |
| 4036 | |
| 4037 | FLAC__ASSERT(default_partition_samples > predictor_order); |
| 4038 | |
| 4039 | for(partition = residual_sample = 0; partition < partitions; partition++) { |
| 4040 | partition_samples = default_partition_samples; |
| 4041 | if(partition == 0) |
| 4042 | partition_samples -= predictor_order; |
| 4043 | rmax = 0; |
| 4044 | for(partition_sample = 0; partition_sample < partition_samples; partition_sample++) { |
| 4045 | r = residual[residual_sample++]; |
| 4046 | /* OPT: maybe faster: rmax |= r ^ (r>>31) */ |
| 4047 | if(r < 0) |
| 4048 | rmax |= ~r; |
| 4049 | else |
| 4050 | rmax |= r; |
| 4051 | } |
| 4052 | /* now we know all residual values are in the range [-rmax-1,rmax] */ |
| 4053 | raw_bits_per_partition[partition] = rmax? FLAC__bitmath_ilog2(rmax) + 2 : 1; |
| 4054 | } |
| 4055 | to_partition = partitions; |
| 4056 | break; /*@@@ yuck, should remove the 'for' loop instead */ |
| 4057 | } |
| 4058 | |
| 4059 | /* now merge partitions for lower orders */ |
| 4060 | for(from_partition = 0, --partition_order; partition_order >= (int)min_partition_order; partition_order--) { |
| 4061 | unsigned m; |
| 4062 | unsigned i; |
| 4063 | const unsigned partitions = 1u << partition_order; |
| 4064 | for(i = 0; i < partitions; i++) { |
| 4065 | m = raw_bits_per_partition[from_partition]; |
| 4066 | from_partition++; |
| 4067 | raw_bits_per_partition[to_partition] = flac_max(m, raw_bits_per_partition[from_partition]); |
| 4068 | from_partition++; |
| 4069 | to_partition++; |
| 4070 | } |
| 4071 | } |
| 4072 | } |
| 4073 | |
| 4074 | #ifdef EXACT_RICE_BITS_CALCULATION |
| 4075 | static inline unsigned count_rice_bits_in_partition_( |
| 4076 | const unsigned rice_parameter, |
| 4077 | const unsigned partition_samples, |
| 4078 | const FLAC__int32 *residual |
| 4079 | ) |
| 4080 | { |
| 4081 | unsigned i, partition_bits = |
| 4082 | FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + /* actually could end up being FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN but err on side of 16bps */ |
| 4083 | (1+rice_parameter) * partition_samples /* 1 for unary stop bit + rice_parameter for the binary portion */ |
| 4084 | ; |
| 4085 | for(i = 0; i < partition_samples; i++) |
| 4086 | partition_bits += ( (FLAC__uint32)((residual[i]<<1)^(residual[i]>>31)) >> rice_parameter ); |
| 4087 | return partition_bits; |
| 4088 | } |
| 4089 | #else |
| 4090 | static inline unsigned count_rice_bits_in_partition_( |
| 4091 | const unsigned rice_parameter, |
| 4092 | const unsigned partition_samples, |
| 4093 | const FLAC__uint64 abs_residual_partition_sum |
| 4094 | ) |
| 4095 | { |
| 4096 | return |
| 4097 | FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN + /* actually could end up being FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN but err on side of 16bps */ |
| 4098 | (1+rice_parameter) * partition_samples + /* 1 for unary stop bit + rice_parameter for the binary portion */ |
| 4099 | ( |
| 4100 | rice_parameter? |
| 4101 | (unsigned)(abs_residual_partition_sum >> (rice_parameter-1)) /* rice_parameter-1 because the real coder sign-folds instead of using a sign bit */ |
| 4102 | : (unsigned)(abs_residual_partition_sum << 1) /* can't shift by negative number, so reverse */ |
| 4103 | ) |
| 4104 | - (partition_samples >> 1) |
| 4105 | /* -(partition_samples>>1) to subtract out extra contributions to the abs_residual_partition_sum. |
| 4106 | * The actual number of bits used is closer to the sum(for all i in the partition) of abs(residual[i])>>(rice_parameter-1) |
| 4107 | * By using the abs_residual_partition sum, we also add in bits in the LSBs that would normally be shifted out. |
| 4108 | * So the subtraction term tries to guess how many extra bits were contributed. |
| 4109 | * If the LSBs are randomly distributed, this should average to 0.5 extra bits per sample. |
| 4110 | */ |
| 4111 | ; |
| 4112 | } |
| 4113 | #endif |
| 4114 | |
| 4115 | FLAC__bool set_partitioned_rice_( |
| 4116 | #ifdef EXACT_RICE_BITS_CALCULATION |
| 4117 | const FLAC__int32 residual[], |
| 4118 | #endif |
| 4119 | const FLAC__uint64 abs_residual_partition_sums[], |
| 4120 | const unsigned raw_bits_per_partition[], |
| 4121 | const unsigned residual_samples, |
| 4122 | const unsigned predictor_order, |
| 4123 | const unsigned suggested_rice_parameter, |
| 4124 | const unsigned rice_parameter_limit, |
| 4125 | const unsigned rice_parameter_search_dist, |
| 4126 | const unsigned partition_order, |
| 4127 | const FLAC__bool search_for_escapes, |
| 4128 | FLAC__EntropyCodingMethod_PartitionedRiceContents *partitioned_rice_contents, |
| 4129 | unsigned *bits |
| 4130 | ) |
| 4131 | { |
| 4132 | unsigned rice_parameter, partition_bits; |
| 4133 | unsigned best_partition_bits, best_rice_parameter = 0; |
| 4134 | unsigned bits_ = FLAC__ENTROPY_CODING_METHOD_TYPE_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN; |
| 4135 | unsigned *parameters, *raw_bits; |
| 4136 | #ifdef ENABLE_RICE_PARAMETER_SEARCH |
| 4137 | unsigned min_rice_parameter, max_rice_parameter; |
| 4138 | #else |
| 4139 | (void)rice_parameter_search_dist; |
| 4140 | #endif |
| 4141 | |
| 4142 | FLAC__ASSERT(suggested_rice_parameter < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER); |
| 4143 | FLAC__ASSERT(rice_parameter_limit <= FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER); |
| 4144 | |
| 4145 | FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(partitioned_rice_contents, flac_max(6u, partition_order)); |
| 4146 | parameters = partitioned_rice_contents->parameters; |
| 4147 | raw_bits = partitioned_rice_contents->raw_bits; |
| 4148 | |
| 4149 | if(partition_order == 0) { |
| 4150 | best_partition_bits = (unsigned)(-1); |
| 4151 | #ifdef ENABLE_RICE_PARAMETER_SEARCH |
| 4152 | if(rice_parameter_search_dist) { |
| 4153 | if(suggested_rice_parameter < rice_parameter_search_dist) |
| 4154 | min_rice_parameter = 0; |
| 4155 | else |
| 4156 | min_rice_parameter = suggested_rice_parameter - rice_parameter_search_dist; |
| 4157 | max_rice_parameter = suggested_rice_parameter + rice_parameter_search_dist; |
| 4158 | if(max_rice_parameter >= rice_parameter_limit) { |
| 4159 | #ifdef DEBUG_VERBOSE |
| 4160 | fprintf(stderr, "clipping rice_parameter (%u -> %u) @5\n", max_rice_parameter, rice_parameter_limit - 1); |
| 4161 | #endif |
| 4162 | max_rice_parameter = rice_parameter_limit - 1; |
| 4163 | } |
| 4164 | } |
| 4165 | else |
| 4166 | min_rice_parameter = max_rice_parameter = suggested_rice_parameter; |
| 4167 | |
| 4168 | for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) { |
| 4169 | #else |
| 4170 | rice_parameter = suggested_rice_parameter; |
| 4171 | #endif |
| 4172 | #ifdef EXACT_RICE_BITS_CALCULATION |
| 4173 | partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, residual); |
| 4174 | #else |
| 4175 | partition_bits = count_rice_bits_in_partition_(rice_parameter, residual_samples, abs_residual_partition_sums[0]); |
| 4176 | #endif |
| 4177 | if(partition_bits < best_partition_bits) { |
| 4178 | best_rice_parameter = rice_parameter; |
| 4179 | best_partition_bits = partition_bits; |
| 4180 | } |
| 4181 | #ifdef ENABLE_RICE_PARAMETER_SEARCH |
| 4182 | } |
| 4183 | #endif |
| 4184 | if(search_for_escapes) { |
| 4185 | partition_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[0] * residual_samples; |
| 4186 | if(partition_bits <= best_partition_bits) { |
| 4187 | raw_bits[0] = raw_bits_per_partition[0]; |
| 4188 | best_rice_parameter = 0; /* will be converted to appropriate escape parameter later */ |
| 4189 | best_partition_bits = partition_bits; |
| 4190 | } |
| 4191 | else |
| 4192 | raw_bits[0] = 0; |
| 4193 | } |
| 4194 | parameters[0] = best_rice_parameter; |
| 4195 | bits_ += best_partition_bits; |
| 4196 | } |
| 4197 | else { |
| 4198 | unsigned partition, residual_sample; |
| 4199 | unsigned partition_samples; |
| 4200 | FLAC__uint64 mean, k; |
| 4201 | const unsigned partitions = 1u << partition_order; |
| 4202 | for(partition = residual_sample = 0; partition < partitions; partition++) { |
| 4203 | partition_samples = (residual_samples+predictor_order) >> partition_order; |
| 4204 | if(partition == 0) { |
| 4205 | if(partition_samples <= predictor_order) |
| 4206 | return false; |
| 4207 | else |
| 4208 | partition_samples -= predictor_order; |
| 4209 | } |
| 4210 | mean = abs_residual_partition_sums[partition]; |
| 4211 | /* we are basically calculating the size in bits of the |
| 4212 | * average residual magnitude in the partition: |
| 4213 | * rice_parameter = floor(log2(mean/partition_samples)) |
| 4214 | * 'mean' is not a good name for the variable, it is |
| 4215 | * actually the sum of magnitudes of all residual values |
| 4216 | * in the partition, so the actual mean is |
| 4217 | * mean/partition_samples |
| 4218 | */ |
| 4219 | #if 0 /* old simple code */ |
| 4220 | for(rice_parameter = 0, k = partition_samples; k < mean; rice_parameter++, k <<= 1) |
| 4221 | ; |
| 4222 | #else |
| 4223 | #if defined FLAC__CPU_X86_64 /* and other 64-bit arch, too */ |
| 4224 | if(mean <= 0x80000000/512) { /* 512: more or less optimal for both 16- and 24-bit input */ |
| 4225 | #else |
| 4226 | if(mean <= 0x80000000/8) { /* 32-bit arch: use 32-bit math if possible */ |
| 4227 | #endif |
| 4228 | FLAC__uint32 k2, mean2 = (FLAC__uint32) mean; |
| 4229 | rice_parameter = 0; k2 = partition_samples; |
| 4230 | while(k2*8 < mean2) { /* requires: mean <= (2^31)/8 */ |
| 4231 | rice_parameter += 4; k2 <<= 4; /* tuned for 16-bit input */ |
| 4232 | } |
| 4233 | while(k2 < mean2) { /* requires: mean <= 2^31 */ |
| 4234 | rice_parameter++; k2 <<= 1; |
| 4235 | } |
| 4236 | } |
| 4237 | else { |
| 4238 | rice_parameter = 0; k = partition_samples; |
| 4239 | if(mean <= FLAC__U64L(0x8000000000000000)/128) /* usually mean is _much_ smaller than this value */ |
| 4240 | while(k*128 < mean) { /* requires: mean <= (2^63)/128 */ |
| 4241 | rice_parameter += 8; k <<= 8; /* tuned for 24-bit input */ |
| 4242 | } |
| 4243 | while(k < mean) { /* requires: mean <= 2^63 */ |
| 4244 | rice_parameter++; k <<= 1; |
| 4245 | } |
| 4246 | } |
| 4247 | #endif |
| 4248 | if(rice_parameter >= rice_parameter_limit) { |
| 4249 | #ifdef DEBUG_VERBOSE |
| 4250 | fprintf(stderr, "clipping rice_parameter (%u -> %u) @6\n", rice_parameter, rice_parameter_limit - 1); |
| 4251 | #endif |
| 4252 | rice_parameter = rice_parameter_limit - 1; |
| 4253 | } |
| 4254 | |
| 4255 | best_partition_bits = (unsigned)(-1); |
| 4256 | #ifdef ENABLE_RICE_PARAMETER_SEARCH |
| 4257 | if(rice_parameter_search_dist) { |
| 4258 | if(rice_parameter < rice_parameter_search_dist) |
| 4259 | min_rice_parameter = 0; |
| 4260 | else |
| 4261 | min_rice_parameter = rice_parameter - rice_parameter_search_dist; |
| 4262 | max_rice_parameter = rice_parameter + rice_parameter_search_dist; |
| 4263 | if(max_rice_parameter >= rice_parameter_limit) { |
| 4264 | #ifdef DEBUG_VERBOSE |
| 4265 | fprintf(stderr, "clipping rice_parameter (%u -> %u) @7\n", max_rice_parameter, rice_parameter_limit - 1); |
| 4266 | #endif |
| 4267 | max_rice_parameter = rice_parameter_limit - 1; |
| 4268 | } |
| 4269 | } |
| 4270 | else |
| 4271 | min_rice_parameter = max_rice_parameter = rice_parameter; |
| 4272 | |
| 4273 | for(rice_parameter = min_rice_parameter; rice_parameter <= max_rice_parameter; rice_parameter++) { |
| 4274 | #endif |
| 4275 | #ifdef EXACT_RICE_BITS_CALCULATION |
| 4276 | partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, residual+residual_sample); |
| 4277 | #else |
| 4278 | partition_bits = count_rice_bits_in_partition_(rice_parameter, partition_samples, abs_residual_partition_sums[partition]); |
| 4279 | #endif |
| 4280 | if(partition_bits < best_partition_bits) { |
| 4281 | best_rice_parameter = rice_parameter; |
| 4282 | best_partition_bits = partition_bits; |
| 4283 | } |
| 4284 | #ifdef ENABLE_RICE_PARAMETER_SEARCH |
| 4285 | } |
| 4286 | #endif |
| 4287 | if(search_for_escapes) { |
| 4288 | partition_bits = FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN + FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN + raw_bits_per_partition[partition] * partition_samples; |
| 4289 | if(partition_bits <= best_partition_bits) { |
| 4290 | raw_bits[partition] = raw_bits_per_partition[partition]; |
| 4291 | best_rice_parameter = 0; /* will be converted to appropriate escape parameter later */ |
| 4292 | best_partition_bits = partition_bits; |
| 4293 | } |
| 4294 | else |
| 4295 | raw_bits[partition] = 0; |
| 4296 | } |
| 4297 | parameters[partition] = best_rice_parameter; |
| 4298 | bits_ += best_partition_bits; |
| 4299 | residual_sample += partition_samples; |
| 4300 | } |
| 4301 | } |
| 4302 | |
| 4303 | *bits = bits_; |
| 4304 | return true; |
| 4305 | } |
| 4306 | |
| 4307 | unsigned get_wasted_bits_(FLAC__int32 signal[], unsigned samples) |
| 4308 | { |
| 4309 | unsigned i, shift; |
| 4310 | FLAC__int32 x = 0; |
| 4311 | |
| 4312 | for(i = 0; i < samples && !(x&1); i++) |
| 4313 | x |= signal[i]; |
| 4314 | |
| 4315 | if(x == 0) { |
| 4316 | shift = 0; |
| 4317 | } |
| 4318 | else { |
| 4319 | for(shift = 0; !(x&1); shift++) |
| 4320 | x >>= 1; |
| 4321 | } |
| 4322 | |
| 4323 | if(shift > 0) { |
| 4324 | for(i = 0; i < samples; i++) |
| 4325 | signal[i] >>= shift; |
| 4326 | } |
| 4327 | |
| 4328 | return shift; |
| 4329 | } |
| 4330 | |
| 4331 | void append_to_verify_fifo_(verify_input_fifo *fifo, const FLAC__int32 * const input[], unsigned input_offset, unsigned channels, unsigned wide_samples) |
| 4332 | { |
| 4333 | unsigned channel; |
| 4334 | |
| 4335 | for(channel = 0; channel < channels; channel++) |
| 4336 | memcpy(&fifo->data[channel][fifo->tail], &input[channel][input_offset], sizeof(FLAC__int32) * wide_samples); |
| 4337 | |
| 4338 | fifo->tail += wide_samples; |
| 4339 | |
| 4340 | FLAC__ASSERT(fifo->tail <= fifo->size); |
| 4341 | } |
| 4342 | |
| 4343 | void append_to_verify_fifo_interleaved_(verify_input_fifo *fifo, const FLAC__int32 input[], unsigned input_offset, unsigned channels, unsigned wide_samples) |
| 4344 | { |
| 4345 | unsigned channel; |
| 4346 | unsigned sample, wide_sample; |
| 4347 | unsigned tail = fifo->tail; |
| 4348 | |
| 4349 | sample = input_offset * channels; |
| 4350 | for(wide_sample = 0; wide_sample < wide_samples; wide_sample++) { |
| 4351 | for(channel = 0; channel < channels; channel++) |
| 4352 | fifo->data[channel][tail] = input[sample++]; |
| 4353 | tail++; |
| 4354 | } |
| 4355 | fifo->tail = tail; |
| 4356 | |
| 4357 | FLAC__ASSERT(fifo->tail <= fifo->size); |
| 4358 | } |
| 4359 | |
| 4360 | FLAC__StreamDecoderReadStatus verify_read_callback_(const FLAC__StreamDecoder *decoder, FLAC__byte buffer[], size_t *bytes, void *client_data) |
| 4361 | { |
| 4362 | FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data; |
| 4363 | const size_t encoded_bytes = encoder->private_->verify.output.bytes; |
| 4364 | (void)decoder; |
| 4365 | |
| 4366 | if(encoder->private_->verify.needs_magic_hack) { |
| 4367 | FLAC__ASSERT(*bytes >= FLAC__STREAM_SYNC_LENGTH); |
| 4368 | *bytes = FLAC__STREAM_SYNC_LENGTH; |
| 4369 | memcpy(buffer, FLAC__STREAM_SYNC_STRING, *bytes); |
| 4370 | encoder->private_->verify.needs_magic_hack = false; |
| 4371 | } |
| 4372 | else { |
| 4373 | if(encoded_bytes == 0) { |
| 4374 | /* |
| 4375 | * If we get here, a FIFO underflow has occurred, |
| 4376 | * which means there is a bug somewhere. |
| 4377 | */ |
| 4378 | FLAC__ASSERT(0); |
| 4379 | return FLAC__STREAM_DECODER_READ_STATUS_ABORT; |
| 4380 | } |
| 4381 | else if(encoded_bytes < *bytes) |
| 4382 | *bytes = encoded_bytes; |
| 4383 | memcpy(buffer, encoder->private_->verify.output.data, *bytes); |
| 4384 | encoder->private_->verify.output.data += *bytes; |
| 4385 | encoder->private_->verify.output.bytes -= *bytes; |
| 4386 | } |
| 4387 | |
| 4388 | return FLAC__STREAM_DECODER_READ_STATUS_CONTINUE; |
| 4389 | } |
| 4390 | |
| 4391 | FLAC__StreamDecoderWriteStatus verify_write_callback_(const FLAC__StreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data) |
| 4392 | { |
| 4393 | FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder *)client_data; |
| 4394 | unsigned channel; |
| 4395 | const unsigned channels = frame->header.channels; |
| 4396 | const unsigned blocksize = frame->header.blocksize; |
| 4397 | const unsigned bytes_per_block = sizeof(FLAC__int32) * blocksize; |
| 4398 | |
| 4399 | (void)decoder; |
| 4400 | |
| 4401 | for(channel = 0; channel < channels; channel++) { |
| 4402 | if(0 != memcmp(buffer[channel], encoder->private_->verify.input_fifo.data[channel], bytes_per_block)) { |
| 4403 | unsigned i, sample = 0; |
| 4404 | FLAC__int32 expect = 0, got = 0; |
| 4405 | |
| 4406 | for(i = 0; i < blocksize; i++) { |
| 4407 | if(buffer[channel][i] != encoder->private_->verify.input_fifo.data[channel][i]) { |
| 4408 | sample = i; |
| 4409 | expect = (FLAC__int32)encoder->private_->verify.input_fifo.data[channel][i]; |
| 4410 | got = (FLAC__int32)buffer[channel][i]; |
| 4411 | break; |
| 4412 | } |
| 4413 | } |
| 4414 | FLAC__ASSERT(i < blocksize); |
| 4415 | FLAC__ASSERT(frame->header.number_type == FLAC__FRAME_NUMBER_TYPE_SAMPLE_NUMBER); |
| 4416 | encoder->private_->verify.error_stats.absolute_sample = frame->header.number.sample_number + sample; |
| 4417 | encoder->private_->verify.error_stats.frame_number = (unsigned)(frame->header.number.sample_number / blocksize); |
| 4418 | encoder->private_->verify.error_stats.channel = channel; |
| 4419 | encoder->private_->verify.error_stats.sample = sample; |
| 4420 | encoder->private_->verify.error_stats.expected = expect; |
| 4421 | encoder->private_->verify.error_stats.got = got; |
| 4422 | encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA; |
| 4423 | return FLAC__STREAM_DECODER_WRITE_STATUS_ABORT; |
| 4424 | } |
| 4425 | } |
| 4426 | /* dequeue the frame from the fifo */ |
| 4427 | encoder->private_->verify.input_fifo.tail -= blocksize; |
| 4428 | FLAC__ASSERT(encoder->private_->verify.input_fifo.tail <= OVERREAD_); |
| 4429 | for(channel = 0; channel < channels; channel++) |
| 4430 | memmove(&encoder->private_->verify.input_fifo.data[channel][0], &encoder->private_->verify.input_fifo.data[channel][blocksize], encoder->private_->verify.input_fifo.tail * sizeof(encoder->private_->verify.input_fifo.data[0][0])); |
| 4431 | return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE; |
| 4432 | } |
| 4433 | |
| 4434 | void verify_metadata_callback_(const FLAC__StreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data) |
| 4435 | { |
| 4436 | (void)decoder, (void)metadata, (void)client_data; |
| 4437 | } |
| 4438 | |
| 4439 | void verify_error_callback_(const FLAC__StreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data) |
| 4440 | { |
| 4441 | FLAC__StreamEncoder *encoder = (FLAC__StreamEncoder*)client_data; |
| 4442 | (void)decoder, (void)status; |
| 4443 | encoder->protected_->state = FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR; |
| 4444 | } |
| 4445 | |
| 4446 | FLAC__StreamEncoderReadStatus file_read_callback_(const FLAC__StreamEncoder *encoder, FLAC__byte buffer[], size_t *bytes, void *client_data) |
| 4447 | { |
| 4448 | (void)client_data; |
| 4449 | |
| 4450 | *bytes = fread(buffer, 1, *bytes, encoder->private_->file); |
| 4451 | if (*bytes == 0) { |
| 4452 | if (feof(encoder->private_->file)) |
| 4453 | return FLAC__STREAM_ENCODER_READ_STATUS_END_OF_STREAM; |
| 4454 | else if (ferror(encoder->private_->file)) |
| 4455 | return FLAC__STREAM_ENCODER_READ_STATUS_ABORT; |
| 4456 | } |
| 4457 | return FLAC__STREAM_ENCODER_READ_STATUS_CONTINUE; |
| 4458 | } |
| 4459 | |
| 4460 | FLAC__StreamEncoderSeekStatus file_seek_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data) |
| 4461 | { |
| 4462 | (void)client_data; |
| 4463 | |
| 4464 | if(fseeko(encoder->private_->file, (FLAC__off_t)absolute_byte_offset, SEEK_SET) < 0) |
| 4465 | return FLAC__STREAM_ENCODER_SEEK_STATUS_ERROR; |
| 4466 | else |
| 4467 | return FLAC__STREAM_ENCODER_SEEK_STATUS_OK; |
| 4468 | } |
| 4469 | |
| 4470 | FLAC__StreamEncoderTellStatus file_tell_callback_(const FLAC__StreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data) |
| 4471 | { |
| 4472 | FLAC__off_t offset; |
| 4473 | |
| 4474 | (void)client_data; |
| 4475 | |
| 4476 | offset = ftello(encoder->private_->file); |
| 4477 | |
| 4478 | if(offset < 0) { |
| 4479 | return FLAC__STREAM_ENCODER_TELL_STATUS_ERROR; |
| 4480 | } |
| 4481 | else { |
| 4482 | *absolute_byte_offset = (FLAC__uint64)offset; |
| 4483 | return FLAC__STREAM_ENCODER_TELL_STATUS_OK; |
| 4484 | } |
| 4485 | } |
| 4486 | |
| 4487 | #ifdef FLAC__VALGRIND_TESTING |
| 4488 | static size_t local__fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream) |
| 4489 | { |
| 4490 | size_t ret = fwrite(ptr, size, nmemb, stream); |
| 4491 | if(!ferror(stream)) |
| 4492 | fflush(stream); |
| 4493 | return ret; |
| 4494 | } |
| 4495 | #else |
| 4496 | #define local__fwrite fwrite |
| 4497 | #endif |
| 4498 | |
| 4499 | FLAC__StreamEncoderWriteStatus file_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, unsigned samples, unsigned current_frame, void *client_data) |
| 4500 | { |
| 4501 | (void)client_data, (void)current_frame; |
| 4502 | |
| 4503 | if(local__fwrite(buffer, sizeof(FLAC__byte), bytes, encoder->private_->file) == bytes) { |
| 4504 | FLAC__bool call_it = 0 != encoder->private_->progress_callback && ( |
| 4505 | #if FLAC__HAS_OGG |
| 4506 | /* We would like to be able to use 'samples > 0' in the |
| 4507 | * clause here but currently because of the nature of our |
| 4508 | * Ogg writing implementation, 'samples' is always 0 (see |
| 4509 | * ogg_encoder_aspect.c). The downside is extra progress |
| 4510 | * callbacks. |
| 4511 | */ |
| 4512 | encoder->private_->is_ogg? true : |
| 4513 | #endif |
| 4514 | samples > 0 |
| 4515 | ); |
| 4516 | if(call_it) { |
| 4517 | /* NOTE: We have to add +bytes, +samples, and +1 to the stats |
| 4518 | * because at this point in the callback chain, the stats |
| 4519 | * have not been updated. Only after we return and control |
| 4520 | * gets back to write_frame_() are the stats updated |
| 4521 | */ |
| 4522 | encoder->private_->progress_callback(encoder, encoder->private_->bytes_written+bytes, encoder->private_->samples_written+samples, encoder->private_->frames_written+(samples?1:0), encoder->private_->total_frames_estimate, encoder->private_->client_data); |
| 4523 | } |
| 4524 | return FLAC__STREAM_ENCODER_WRITE_STATUS_OK; |
| 4525 | } |
| 4526 | else |
| 4527 | return FLAC__STREAM_ENCODER_WRITE_STATUS_FATAL_ERROR; |
| 4528 | } |
| 4529 | |
| 4530 | /* |
| 4531 | * This will forcibly set stdout to binary mode (for OSes that require it) |
| 4532 | */ |
| 4533 | FILE *get_binary_stdout_(void) |
| 4534 | { |
| 4535 | /* if something breaks here it is probably due to the presence or |
| 4536 | * absence of an underscore before the identifiers 'setmode', |
| 4537 | * 'fileno', and/or 'O_BINARY'; check your system header files. |
| 4538 | */ |
| 4539 | #if defined _MSC_VER || defined __MINGW32__ |
| 4540 | _setmode(_fileno(stdout), _O_BINARY); |
| 4541 | #elif defined __CYGWIN__ |
| 4542 | /* almost certainly not needed for any modern Cygwin, but let's be safe... */ |
| 4543 | setmode(_fileno(stdout), _O_BINARY); |
| 4544 | #elif defined __EMX__ |
| 4545 | setmode(fileno(stdout), O_BINARY); |
| 4546 | #endif |
| 4547 | |
| 4548 | return stdout; |
| 4549 | } |