1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2000-2009 Josh Coalson
3 * Copyright (C) 2011-2016 Xiph.Org Foundation
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
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.
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.
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.
38 #include <string.h> /* for strlen() */
39 #include "private/stream_encoder_framing.h"
40 #include "private/crc.h"
41 #include "FLAC/assert.h"
42 #include "share/compat.h"
44 static FLAC__bool add_entropy_coding_method_(FLAC__BitWriter *bw, const FLAC__EntropyCodingMethod *method);
45 static FLAC__bool add_residual_partitioned_rice_(FLAC__BitWriter *bw, const FLAC__int32 residual[], const unsigned residual_samples, const unsigned predictor_order, const unsigned rice_parameters[], const unsigned raw_bits[], const unsigned partition_order, const FLAC__bool is_extended);
47 FLAC__bool FLAC__add_metadata_block(const FLAC__StreamMetadata *metadata, FLAC__BitWriter *bw)
50 const unsigned vendor_string_length = (unsigned)strlen(FLAC__VENDOR_STRING);
52 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->is_last, FLAC__STREAM_METADATA_IS_LAST_LEN))
55 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->type, FLAC__STREAM_METADATA_TYPE_LEN))
59 * First, for VORBIS_COMMENTs, adjust the length to reflect our vendor string
62 if(metadata->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
63 FLAC__ASSERT(metadata->data.vorbis_comment.vendor_string.length == 0 || 0 != metadata->data.vorbis_comment.vendor_string.entry);
64 i -= metadata->data.vorbis_comment.vendor_string.length;
65 i += vendor_string_length;
67 FLAC__ASSERT(i < (1u << FLAC__STREAM_METADATA_LENGTH_LEN));
68 /* double protection */
69 if(i >= (1u << FLAC__STREAM_METADATA_LENGTH_LEN))
71 if(!FLAC__bitwriter_write_raw_uint32(bw, i, FLAC__STREAM_METADATA_LENGTH_LEN))
74 switch(metadata->type) {
75 case FLAC__METADATA_TYPE_STREAMINFO:
76 FLAC__ASSERT(metadata->data.stream_info.min_blocksize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN));
77 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.min_blocksize, FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN))
79 FLAC__ASSERT(metadata->data.stream_info.max_blocksize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN));
80 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.max_blocksize, FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN))
82 FLAC__ASSERT(metadata->data.stream_info.min_framesize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN));
83 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.min_framesize, FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN))
85 FLAC__ASSERT(metadata->data.stream_info.max_framesize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN));
86 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.max_framesize, FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN))
88 FLAC__ASSERT(FLAC__format_sample_rate_is_valid(metadata->data.stream_info.sample_rate));
89 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.sample_rate, FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN))
91 FLAC__ASSERT(metadata->data.stream_info.channels > 0);
92 FLAC__ASSERT(metadata->data.stream_info.channels <= (1u << FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN));
93 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.channels-1, FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN))
95 FLAC__ASSERT(metadata->data.stream_info.bits_per_sample > 0);
96 FLAC__ASSERT(metadata->data.stream_info.bits_per_sample <= (1u << FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN));
97 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.bits_per_sample-1, FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN))
99 FLAC__ASSERT(metadata->data.stream_info.total_samples < (FLAC__U64L(1) << FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN));
100 if(!FLAC__bitwriter_write_raw_uint64(bw, metadata->data.stream_info.total_samples, FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN))
102 if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.stream_info.md5sum, 16))
105 case FLAC__METADATA_TYPE_PADDING:
106 if(!FLAC__bitwriter_write_zeroes(bw, metadata->length * 8))
109 case FLAC__METADATA_TYPE_APPLICATION:
110 if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.application.id, FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8))
112 if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.application.data, metadata->length - (FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8)))
115 case FLAC__METADATA_TYPE_SEEKTABLE:
116 for(i = 0; i < metadata->data.seek_table.num_points; i++) {
117 if(!FLAC__bitwriter_write_raw_uint64(bw, metadata->data.seek_table.points[i].sample_number, FLAC__STREAM_METADATA_SEEKPOINT_SAMPLE_NUMBER_LEN))
119 if(!FLAC__bitwriter_write_raw_uint64(bw, metadata->data.seek_table.points[i].stream_offset, FLAC__STREAM_METADATA_SEEKPOINT_STREAM_OFFSET_LEN))
121 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.seek_table.points[i].frame_samples, FLAC__STREAM_METADATA_SEEKPOINT_FRAME_SAMPLES_LEN))
125 case FLAC__METADATA_TYPE_VORBIS_COMMENT:
126 if(!FLAC__bitwriter_write_raw_uint32_little_endian(bw, vendor_string_length))
128 if(!FLAC__bitwriter_write_byte_block(bw, (const FLAC__byte*)FLAC__VENDOR_STRING, vendor_string_length))
130 if(!FLAC__bitwriter_write_raw_uint32_little_endian(bw, metadata->data.vorbis_comment.num_comments))
132 for(i = 0; i < metadata->data.vorbis_comment.num_comments; i++) {
133 if(!FLAC__bitwriter_write_raw_uint32_little_endian(bw, metadata->data.vorbis_comment.comments[i].length))
135 if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.vorbis_comment.comments[i].entry, metadata->data.vorbis_comment.comments[i].length))
139 case FLAC__METADATA_TYPE_CUESHEET:
140 FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN % 8 == 0);
141 if(!FLAC__bitwriter_write_byte_block(bw, (const FLAC__byte*)metadata->data.cue_sheet.media_catalog_number, FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN/8))
143 if(!FLAC__bitwriter_write_raw_uint64(bw, metadata->data.cue_sheet.lead_in, FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN))
145 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.cue_sheet.is_cd? 1 : 0, FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN))
147 if(!FLAC__bitwriter_write_zeroes(bw, FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN))
149 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.cue_sheet.num_tracks, FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN))
151 for(i = 0; i < metadata->data.cue_sheet.num_tracks; i++) {
152 const FLAC__StreamMetadata_CueSheet_Track *track = metadata->data.cue_sheet.tracks + i;
154 if(!FLAC__bitwriter_write_raw_uint64(bw, track->offset, FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN))
156 if(!FLAC__bitwriter_write_raw_uint32(bw, track->number, FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN))
158 FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN % 8 == 0);
159 if(!FLAC__bitwriter_write_byte_block(bw, (const FLAC__byte*)track->isrc, FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN/8))
161 if(!FLAC__bitwriter_write_raw_uint32(bw, track->type, FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN))
163 if(!FLAC__bitwriter_write_raw_uint32(bw, track->pre_emphasis, FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN))
165 if(!FLAC__bitwriter_write_zeroes(bw, FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN))
167 if(!FLAC__bitwriter_write_raw_uint32(bw, track->num_indices, FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN))
169 for(j = 0; j < track->num_indices; j++) {
170 const FLAC__StreamMetadata_CueSheet_Index *indx = track->indices + j;
172 if(!FLAC__bitwriter_write_raw_uint64(bw, indx->offset, FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN))
174 if(!FLAC__bitwriter_write_raw_uint32(bw, indx->number, FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN))
176 if(!FLAC__bitwriter_write_zeroes(bw, FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN))
181 case FLAC__METADATA_TYPE_PICTURE:
184 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.type, FLAC__STREAM_METADATA_PICTURE_TYPE_LEN))
186 len = strlen(metadata->data.picture.mime_type);
187 if(!FLAC__bitwriter_write_raw_uint32(bw, len, FLAC__STREAM_METADATA_PICTURE_MIME_TYPE_LENGTH_LEN))
189 if(!FLAC__bitwriter_write_byte_block(bw, (const FLAC__byte*)metadata->data.picture.mime_type, len))
191 len = strlen((const char *)metadata->data.picture.description);
192 if(!FLAC__bitwriter_write_raw_uint32(bw, len, FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_LEN))
194 if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.picture.description, len))
196 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.width, FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN))
198 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.height, FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN))
200 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.depth, FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN))
202 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.colors, FLAC__STREAM_METADATA_PICTURE_COLORS_LEN))
204 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.data_length, FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN))
206 if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.picture.data, metadata->data.picture.data_length))
211 if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.unknown.data, metadata->length))
216 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(bw));
220 FLAC__bool FLAC__frame_add_header(const FLAC__FrameHeader *header, FLAC__BitWriter *bw)
222 unsigned u, blocksize_hint, sample_rate_hint;
225 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(bw));
227 if(!FLAC__bitwriter_write_raw_uint32(bw, FLAC__FRAME_HEADER_SYNC, FLAC__FRAME_HEADER_SYNC_LEN))
230 if(!FLAC__bitwriter_write_raw_uint32(bw, 0, FLAC__FRAME_HEADER_RESERVED_LEN))
233 if(!FLAC__bitwriter_write_raw_uint32(bw, (header->number_type == FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER)? 0 : 1, FLAC__FRAME_HEADER_BLOCKING_STRATEGY_LEN))
236 FLAC__ASSERT(header->blocksize > 0 && header->blocksize <= FLAC__MAX_BLOCK_SIZE);
237 /* when this assertion holds true, any legal blocksize can be expressed in the frame header */
238 FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535u);
240 switch(header->blocksize) {
241 case 192: u = 1; break;
242 case 576: u = 2; break;
243 case 1152: u = 3; break;
244 case 2304: u = 4; break;
245 case 4608: u = 5; break;
246 case 256: u = 8; break;
247 case 512: u = 9; break;
248 case 1024: u = 10; break;
249 case 2048: u = 11; break;
250 case 4096: u = 12; break;
251 case 8192: u = 13; break;
252 case 16384: u = 14; break;
253 case 32768: u = 15; break;
255 if(header->blocksize <= 0x100)
256 blocksize_hint = u = 6;
258 blocksize_hint = u = 7;
261 if(!FLAC__bitwriter_write_raw_uint32(bw, u, FLAC__FRAME_HEADER_BLOCK_SIZE_LEN))
264 FLAC__ASSERT(FLAC__format_sample_rate_is_valid(header->sample_rate));
265 sample_rate_hint = 0;
266 switch(header->sample_rate) {
267 case 88200: u = 1; break;
268 case 176400: u = 2; break;
269 case 192000: u = 3; break;
270 case 8000: u = 4; break;
271 case 16000: u = 5; break;
272 case 22050: u = 6; break;
273 case 24000: u = 7; break;
274 case 32000: u = 8; break;
275 case 44100: u = 9; break;
276 case 48000: u = 10; break;
277 case 96000: u = 11; break;
279 if(header->sample_rate <= 255000 && header->sample_rate % 1000 == 0)
280 sample_rate_hint = u = 12;
281 else if(header->sample_rate % 10 == 0)
282 sample_rate_hint = u = 14;
283 else if(header->sample_rate <= 0xffff)
284 sample_rate_hint = u = 13;
289 if(!FLAC__bitwriter_write_raw_uint32(bw, u, FLAC__FRAME_HEADER_SAMPLE_RATE_LEN))
292 FLAC__ASSERT(header->channels > 0 && header->channels <= (1u << FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN) && header->channels <= FLAC__MAX_CHANNELS);
293 switch(header->channel_assignment) {
294 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
295 u = header->channels - 1;
297 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
298 FLAC__ASSERT(header->channels == 2);
301 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
302 FLAC__ASSERT(header->channels == 2);
305 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
306 FLAC__ASSERT(header->channels == 2);
312 if(!FLAC__bitwriter_write_raw_uint32(bw, u, FLAC__FRAME_HEADER_CHANNEL_ASSIGNMENT_LEN))
315 FLAC__ASSERT(header->bits_per_sample > 0 && header->bits_per_sample <= (1u << FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN));
316 switch(header->bits_per_sample) {
317 case 8 : u = 1; break;
318 case 12: u = 2; break;
319 case 16: u = 4; break;
320 case 20: u = 5; break;
321 case 24: u = 6; break;
322 default: u = 0; break;
324 if(!FLAC__bitwriter_write_raw_uint32(bw, u, FLAC__FRAME_HEADER_BITS_PER_SAMPLE_LEN))
327 if(!FLAC__bitwriter_write_raw_uint32(bw, 0, FLAC__FRAME_HEADER_ZERO_PAD_LEN))
330 if(header->number_type == FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER) {
331 if(!FLAC__bitwriter_write_utf8_uint32(bw, header->number.frame_number))
335 if(!FLAC__bitwriter_write_utf8_uint64(bw, header->number.sample_number))
340 if(!FLAC__bitwriter_write_raw_uint32(bw, header->blocksize-1, (blocksize_hint==6)? 8:16))
343 switch(sample_rate_hint) {
345 if(!FLAC__bitwriter_write_raw_uint32(bw, header->sample_rate / 1000, 8))
349 if(!FLAC__bitwriter_write_raw_uint32(bw, header->sample_rate, 16))
353 if(!FLAC__bitwriter_write_raw_uint32(bw, header->sample_rate / 10, 16))
359 if(!FLAC__bitwriter_get_write_crc8(bw, &crc))
361 if(!FLAC__bitwriter_write_raw_uint32(bw, crc, FLAC__FRAME_HEADER_CRC_LEN))
367 FLAC__bool FLAC__subframe_add_constant(const FLAC__Subframe_Constant *subframe, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitWriter *bw)
372 FLAC__bitwriter_write_raw_uint32(bw, FLAC__SUBFRAME_TYPE_CONSTANT_BYTE_ALIGNED_MASK | (wasted_bits? 1:0), FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN) &&
373 (wasted_bits? FLAC__bitwriter_write_unary_unsigned(bw, wasted_bits-1) : true) &&
374 FLAC__bitwriter_write_raw_int32(bw, subframe->value, subframe_bps)
380 FLAC__bool FLAC__subframe_add_fixed(const FLAC__Subframe_Fixed *subframe, unsigned residual_samples, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitWriter *bw)
384 if(!FLAC__bitwriter_write_raw_uint32(bw, FLAC__SUBFRAME_TYPE_FIXED_BYTE_ALIGNED_MASK | (subframe->order<<1) | (wasted_bits? 1:0), FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN))
387 if(!FLAC__bitwriter_write_unary_unsigned(bw, wasted_bits-1))
390 for(i = 0; i < subframe->order; i++)
391 if(!FLAC__bitwriter_write_raw_int32(bw, subframe->warmup[i], subframe_bps))
394 if(!add_entropy_coding_method_(bw, &subframe->entropy_coding_method))
396 switch(subframe->entropy_coding_method.type) {
397 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
398 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2:
399 if(!add_residual_partitioned_rice_(
404 subframe->entropy_coding_method.data.partitioned_rice.contents->parameters,
405 subframe->entropy_coding_method.data.partitioned_rice.contents->raw_bits,
406 subframe->entropy_coding_method.data.partitioned_rice.order,
407 /*is_extended=*/subframe->entropy_coding_method.type == FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2
418 FLAC__bool FLAC__subframe_add_lpc(const FLAC__Subframe_LPC *subframe, unsigned residual_samples, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitWriter *bw)
422 if(!FLAC__bitwriter_write_raw_uint32(bw, FLAC__SUBFRAME_TYPE_LPC_BYTE_ALIGNED_MASK | ((subframe->order-1)<<1) | (wasted_bits? 1:0), FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN))
425 if(!FLAC__bitwriter_write_unary_unsigned(bw, wasted_bits-1))
428 for(i = 0; i < subframe->order; i++)
429 if(!FLAC__bitwriter_write_raw_int32(bw, subframe->warmup[i], subframe_bps))
432 if(!FLAC__bitwriter_write_raw_uint32(bw, subframe->qlp_coeff_precision-1, FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN))
434 if(!FLAC__bitwriter_write_raw_int32(bw, subframe->quantization_level, FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN))
436 for(i = 0; i < subframe->order; i++)
437 if(!FLAC__bitwriter_write_raw_int32(bw, subframe->qlp_coeff[i], subframe->qlp_coeff_precision))
440 if(!add_entropy_coding_method_(bw, &subframe->entropy_coding_method))
442 switch(subframe->entropy_coding_method.type) {
443 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
444 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2:
445 if(!add_residual_partitioned_rice_(
450 subframe->entropy_coding_method.data.partitioned_rice.contents->parameters,
451 subframe->entropy_coding_method.data.partitioned_rice.contents->raw_bits,
452 subframe->entropy_coding_method.data.partitioned_rice.order,
453 /*is_extended=*/subframe->entropy_coding_method.type == FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2
464 FLAC__bool FLAC__subframe_add_verbatim(const FLAC__Subframe_Verbatim *subframe, unsigned samples, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitWriter *bw)
467 const FLAC__int32 *signal = subframe->data;
469 if(!FLAC__bitwriter_write_raw_uint32(bw, FLAC__SUBFRAME_TYPE_VERBATIM_BYTE_ALIGNED_MASK | (wasted_bits? 1:0), FLAC__SUBFRAME_ZERO_PAD_LEN + FLAC__SUBFRAME_TYPE_LEN + FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN))
472 if(!FLAC__bitwriter_write_unary_unsigned(bw, wasted_bits-1))
475 for(i = 0; i < samples; i++)
476 if(!FLAC__bitwriter_write_raw_int32(bw, signal[i], subframe_bps))
482 FLAC__bool add_entropy_coding_method_(FLAC__BitWriter *bw, const FLAC__EntropyCodingMethod *method)
484 if(!FLAC__bitwriter_write_raw_uint32(bw, method->type, FLAC__ENTROPY_CODING_METHOD_TYPE_LEN))
486 switch(method->type) {
487 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
488 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2:
489 if(!FLAC__bitwriter_write_raw_uint32(bw, method->data.partitioned_rice.order, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
498 FLAC__bool add_residual_partitioned_rice_(FLAC__BitWriter *bw, const FLAC__int32 residual[], const unsigned residual_samples, const unsigned predictor_order, const unsigned rice_parameters[], const unsigned raw_bits[], const unsigned partition_order, const FLAC__bool is_extended)
500 const unsigned plen = is_extended? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN : FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
501 const unsigned pesc = is_extended? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER : FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
503 if(partition_order == 0) {
506 if(raw_bits[0] == 0) {
507 if(!FLAC__bitwriter_write_raw_uint32(bw, rice_parameters[0], plen))
509 if(!FLAC__bitwriter_write_rice_signed_block(bw, residual, residual_samples, rice_parameters[0]))
513 FLAC__ASSERT(rice_parameters[0] == 0);
514 if(!FLAC__bitwriter_write_raw_uint32(bw, pesc, plen))
516 if(!FLAC__bitwriter_write_raw_uint32(bw, raw_bits[0], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN))
518 for(i = 0; i < residual_samples; i++) {
519 if(!FLAC__bitwriter_write_raw_int32(bw, residual[i], raw_bits[0]))
526 unsigned i, j, k = 0, k_last = 0;
527 unsigned partition_samples;
528 const unsigned default_partition_samples = (residual_samples+predictor_order) >> partition_order;
529 for(i = 0; i < (1u<<partition_order); i++) {
530 partition_samples = default_partition_samples;
532 partition_samples -= predictor_order;
533 k += partition_samples;
534 if(raw_bits[i] == 0) {
535 if(!FLAC__bitwriter_write_raw_uint32(bw, rice_parameters[i], plen))
537 if(!FLAC__bitwriter_write_rice_signed_block(bw, residual+k_last, k-k_last, rice_parameters[i]))
541 if(!FLAC__bitwriter_write_raw_uint32(bw, pesc, plen))
543 if(!FLAC__bitwriter_write_raw_uint32(bw, raw_bits[i], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN))
545 for(j = k_last; j < k; j++) {
546 if(!FLAC__bitwriter_write_raw_int32(bw, residual[j], raw_bits[i]))