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 <stdlib.h> /* for qsort() */
39 #include <string.h> /* for memset() */
40 #include "FLAC/assert.h"
41 #include "FLAC/format.h"
42 #include "share/alloc.h"
43 #include "share/compat.h"
44 #include "private/format.h"
45 #include "private/macros.h"
47 /* PACKAGE_VERSION should come from configure */
48 FLAC_API const char *FLAC__VERSION_STRING = PACKAGE_VERSION;
50 FLAC_API const char *FLAC__VENDOR_STRING = "reference libFLAC " PACKAGE_VERSION " 20170101";
52 FLAC_API const FLAC__byte FLAC__STREAM_SYNC_STRING[4] = { 'f','L','a','C' };
53 FLAC_API const unsigned FLAC__STREAM_SYNC = 0x664C6143;
54 FLAC_API const unsigned FLAC__STREAM_SYNC_LEN = 32; /* bits */
56 FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN = 16; /* bits */
57 FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN = 16; /* bits */
58 FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN = 24; /* bits */
59 FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN = 24; /* bits */
60 FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN = 20; /* bits */
61 FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN = 3; /* bits */
62 FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN = 5; /* bits */
63 FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN = 36; /* bits */
64 FLAC_API const unsigned FLAC__STREAM_METADATA_STREAMINFO_MD5SUM_LEN = 128; /* bits */
66 FLAC_API const unsigned FLAC__STREAM_METADATA_APPLICATION_ID_LEN = 32; /* bits */
68 FLAC_API const unsigned FLAC__STREAM_METADATA_SEEKPOINT_SAMPLE_NUMBER_LEN = 64; /* bits */
69 FLAC_API const unsigned FLAC__STREAM_METADATA_SEEKPOINT_STREAM_OFFSET_LEN = 64; /* bits */
70 FLAC_API const unsigned FLAC__STREAM_METADATA_SEEKPOINT_FRAME_SAMPLES_LEN = 16; /* bits */
72 FLAC_API const FLAC__uint64 FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER = FLAC__U64L(0xffffffffffffffff);
74 FLAC_API const unsigned FLAC__STREAM_METADATA_VORBIS_COMMENT_ENTRY_LENGTH_LEN = 32; /* bits */
75 FLAC_API const unsigned FLAC__STREAM_METADATA_VORBIS_COMMENT_NUM_COMMENTS_LEN = 32; /* bits */
77 FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN = 64; /* bits */
78 FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN = 8; /* bits */
79 FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN = 3*8; /* bits */
81 FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN = 64; /* bits */
82 FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN = 8; /* bits */
83 FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN = 12*8; /* bits */
84 FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN = 1; /* bit */
85 FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN = 1; /* bit */
86 FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN = 6+13*8; /* bits */
87 FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN = 8; /* bits */
89 FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN = 128*8; /* bits */
90 FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN = 64; /* bits */
91 FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN = 1; /* bit */
92 FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN = 7+258*8; /* bits */
93 FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN = 8; /* bits */
95 FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_TYPE_LEN = 32; /* bits */
96 FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_MIME_TYPE_LENGTH_LEN = 32; /* bits */
97 FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_LEN = 32; /* bits */
98 FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN = 32; /* bits */
99 FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN = 32; /* bits */
100 FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN = 32; /* bits */
101 FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_COLORS_LEN = 32; /* bits */
102 FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN = 32; /* bits */
104 FLAC_API const unsigned FLAC__STREAM_METADATA_IS_LAST_LEN = 1; /* bits */
105 FLAC_API const unsigned FLAC__STREAM_METADATA_TYPE_LEN = 7; /* bits */
106 FLAC_API const unsigned FLAC__STREAM_METADATA_LENGTH_LEN = 24; /* bits */
108 FLAC_API const unsigned FLAC__FRAME_HEADER_SYNC = 0x3ffe;
109 FLAC_API const unsigned FLAC__FRAME_HEADER_SYNC_LEN = 14; /* bits */
110 FLAC_API const unsigned FLAC__FRAME_HEADER_RESERVED_LEN = 1; /* bits */
111 FLAC_API const unsigned FLAC__FRAME_HEADER_BLOCKING_STRATEGY_LEN = 1; /* bits */
112 FLAC_API const unsigned FLAC__FRAME_HEADER_BLOCK_SIZE_LEN = 4; /* bits */
113 FLAC_API const unsigned FLAC__FRAME_HEADER_SAMPLE_RATE_LEN = 4; /* bits */
114 FLAC_API const unsigned FLAC__FRAME_HEADER_CHANNEL_ASSIGNMENT_LEN = 4; /* bits */
115 FLAC_API const unsigned FLAC__FRAME_HEADER_BITS_PER_SAMPLE_LEN = 3; /* bits */
116 FLAC_API const unsigned FLAC__FRAME_HEADER_ZERO_PAD_LEN = 1; /* bits */
117 FLAC_API const unsigned FLAC__FRAME_HEADER_CRC_LEN = 8; /* bits */
119 FLAC_API const unsigned FLAC__FRAME_FOOTER_CRC_LEN = 16; /* bits */
121 FLAC_API const unsigned FLAC__ENTROPY_CODING_METHOD_TYPE_LEN = 2; /* bits */
122 FLAC_API const unsigned FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN = 4; /* bits */
123 FLAC_API const unsigned FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN = 4; /* bits */
124 FLAC_API const unsigned FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN = 5; /* bits */
125 FLAC_API const unsigned FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN = 5; /* bits */
127 FLAC_API const unsigned FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER = 15; /* == (1<<FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN)-1 */
128 FLAC_API const unsigned FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER = 31; /* == (1<<FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN)-1 */
130 FLAC_API const char * const FLAC__EntropyCodingMethodTypeString[] = {
135 FLAC_API const unsigned FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN = 4; /* bits */
136 FLAC_API const unsigned FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN = 5; /* bits */
138 FLAC_API const unsigned FLAC__SUBFRAME_ZERO_PAD_LEN = 1; /* bits */
139 FLAC_API const unsigned FLAC__SUBFRAME_TYPE_LEN = 6; /* bits */
140 FLAC_API const unsigned FLAC__SUBFRAME_WASTED_BITS_FLAG_LEN = 1; /* bits */
142 FLAC_API const unsigned FLAC__SUBFRAME_TYPE_CONSTANT_BYTE_ALIGNED_MASK = 0x00;
143 FLAC_API const unsigned FLAC__SUBFRAME_TYPE_VERBATIM_BYTE_ALIGNED_MASK = 0x02;
144 FLAC_API const unsigned FLAC__SUBFRAME_TYPE_FIXED_BYTE_ALIGNED_MASK = 0x10;
145 FLAC_API const unsigned FLAC__SUBFRAME_TYPE_LPC_BYTE_ALIGNED_MASK = 0x40;
147 FLAC_API const char * const FLAC__SubframeTypeString[] = {
154 FLAC_API const char * const FLAC__ChannelAssignmentString[] = {
161 FLAC_API const char * const FLAC__FrameNumberTypeString[] = {
162 "FRAME_NUMBER_TYPE_FRAME_NUMBER",
163 "FRAME_NUMBER_TYPE_SAMPLE_NUMBER"
166 FLAC_API const char * const FLAC__MetadataTypeString[] = {
176 FLAC_API const char * const FLAC__StreamMetadata_Picture_TypeString[] = {
178 "32x32 pixels 'file icon' (PNG only)",
183 "Media (e.g. label side of CD)",
184 "Lead artist/lead performer/soloist",
189 "Lyricist/text writer",
190 "Recording Location",
192 "During performance",
193 "Movie/video screen capture",
194 "A bright coloured fish",
196 "Band/artist logotype",
197 "Publisher/Studio logotype"
200 FLAC_API FLAC__bool FLAC__format_sample_rate_is_valid(unsigned sample_rate)
202 if(sample_rate == 0 || sample_rate > FLAC__MAX_SAMPLE_RATE) {
209 FLAC_API FLAC__bool FLAC__format_blocksize_is_subset(unsigned blocksize, unsigned sample_rate)
211 if(blocksize > 16384)
213 else if(sample_rate <= 48000 && blocksize > 4608)
219 FLAC_API FLAC__bool FLAC__format_sample_rate_is_subset(unsigned sample_rate)
222 !FLAC__format_sample_rate_is_valid(sample_rate) ||
224 sample_rate >= (1u << 16) &&
225 !(sample_rate % 1000 == 0 || sample_rate % 10 == 0)
234 /* @@@@ add to unit tests; it is already indirectly tested by the metadata_object tests */
235 FLAC_API FLAC__bool FLAC__format_seektable_is_legal(const FLAC__StreamMetadata_SeekTable *seek_table)
238 FLAC__uint64 prev_sample_number = 0;
239 FLAC__bool got_prev = false;
241 FLAC__ASSERT(0 != seek_table);
243 for(i = 0; i < seek_table->num_points; i++) {
246 seek_table->points[i].sample_number != FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER &&
247 seek_table->points[i].sample_number <= prev_sample_number
251 prev_sample_number = seek_table->points[i].sample_number;
258 /* used as the sort predicate for qsort() */
259 static int seekpoint_compare_(const FLAC__StreamMetadata_SeekPoint *l, const FLAC__StreamMetadata_SeekPoint *r)
261 /* we don't just 'return l->sample_number - r->sample_number' since the result (FLAC__int64) might overflow an 'int' */
262 if(l->sample_number == r->sample_number)
264 else if(l->sample_number < r->sample_number)
270 /* @@@@ add to unit tests; it is already indirectly tested by the metadata_object tests */
271 FLAC_API unsigned FLAC__format_seektable_sort(FLAC__StreamMetadata_SeekTable *seek_table)
276 FLAC__ASSERT(0 != seek_table);
278 if (seek_table->num_points == 0)
281 /* sort the seekpoints */
282 qsort(seek_table->points, seek_table->num_points, sizeof(FLAC__StreamMetadata_SeekPoint), (int (*)(const void *, const void *))seekpoint_compare_);
284 /* uniquify the seekpoints */
286 for(i = j = 0; i < seek_table->num_points; i++) {
287 if(seek_table->points[i].sample_number != FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER) {
289 if(seek_table->points[i].sample_number == seek_table->points[j-1].sample_number)
294 seek_table->points[j++] = seek_table->points[i];
297 for(i = j; i < seek_table->num_points; i++) {
298 seek_table->points[i].sample_number = FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER;
299 seek_table->points[i].stream_offset = 0;
300 seek_table->points[i].frame_samples = 0;
307 * also disallows non-shortest-form encodings, c.f.
308 * http://www.unicode.org/versions/corrigendum1.html
309 * and a more clear explanation at the end of this section:
310 * http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
312 static unsigned utf8len_(const FLAC__byte *utf8)
314 FLAC__ASSERT(0 != utf8);
315 if ((utf8[0] & 0x80) == 0) {
318 else if ((utf8[0] & 0xE0) == 0xC0 && (utf8[1] & 0xC0) == 0x80) {
319 if ((utf8[0] & 0xFE) == 0xC0) /* overlong sequence check */
323 else if ((utf8[0] & 0xF0) == 0xE0 && (utf8[1] & 0xC0) == 0x80 && (utf8[2] & 0xC0) == 0x80) {
324 if (utf8[0] == 0xE0 && (utf8[1] & 0xE0) == 0x80) /* overlong sequence check */
326 /* illegal surrogates check (U+D800...U+DFFF and U+FFFE...U+FFFF) */
327 if (utf8[0] == 0xED && (utf8[1] & 0xE0) == 0xA0) /* D800-DFFF */
329 if (utf8[0] == 0xEF && utf8[1] == 0xBF && (utf8[2] & 0xFE) == 0xBE) /* FFFE-FFFF */
333 else if ((utf8[0] & 0xF8) == 0xF0 && (utf8[1] & 0xC0) == 0x80 && (utf8[2] & 0xC0) == 0x80 && (utf8[3] & 0xC0) == 0x80) {
334 if (utf8[0] == 0xF0 && (utf8[1] & 0xF0) == 0x80) /* overlong sequence check */
338 else if ((utf8[0] & 0xFC) == 0xF8 && (utf8[1] & 0xC0) == 0x80 && (utf8[2] & 0xC0) == 0x80 && (utf8[3] & 0xC0) == 0x80 && (utf8[4] & 0xC0) == 0x80) {
339 if (utf8[0] == 0xF8 && (utf8[1] & 0xF8) == 0x80) /* overlong sequence check */
343 else if ((utf8[0] & 0xFE) == 0xFC && (utf8[1] & 0xC0) == 0x80 && (utf8[2] & 0xC0) == 0x80 && (utf8[3] & 0xC0) == 0x80 && (utf8[4] & 0xC0) == 0x80 && (utf8[5] & 0xC0) == 0x80) {
344 if (utf8[0] == 0xFC && (utf8[1] & 0xFC) == 0x80) /* overlong sequence check */
353 FLAC_API FLAC__bool FLAC__format_vorbiscomment_entry_name_is_legal(const char *name)
356 for(c = *name; c; c = *(++name))
357 if(c < 0x20 || c == 0x3d || c > 0x7d)
362 FLAC_API FLAC__bool FLAC__format_vorbiscomment_entry_value_is_legal(const FLAC__byte *value, unsigned length)
364 if(length == (unsigned)(-1)) {
366 unsigned n = utf8len_(value);
373 const FLAC__byte *end = value + length;
375 unsigned n = utf8len_(value);
386 FLAC_API FLAC__bool FLAC__format_vorbiscomment_entry_is_legal(const FLAC__byte *entry, unsigned length)
388 const FLAC__byte *s, *end;
390 for(s = entry, end = s + length; s < end && *s != '='; s++) {
391 if(*s < 0x20 || *s > 0x7D)
400 unsigned n = utf8len_(s);
411 /* @@@@ add to unit tests; it is already indirectly tested by the metadata_object tests */
412 FLAC_API FLAC__bool FLAC__format_cuesheet_is_legal(const FLAC__StreamMetadata_CueSheet *cue_sheet, FLAC__bool check_cd_da_subset, const char **violation)
416 if(check_cd_da_subset) {
417 if(cue_sheet->lead_in < 2 * 44100) {
418 if(violation) *violation = "CD-DA cue sheet must have a lead-in length of at least 2 seconds";
421 if(cue_sheet->lead_in % 588 != 0) {
422 if(violation) *violation = "CD-DA cue sheet lead-in length must be evenly divisible by 588 samples";
427 if(cue_sheet->num_tracks == 0) {
428 if(violation) *violation = "cue sheet must have at least one track (the lead-out)";
432 if(check_cd_da_subset && cue_sheet->tracks[cue_sheet->num_tracks-1].number != 170) {
433 if(violation) *violation = "CD-DA cue sheet must have a lead-out track number 170 (0xAA)";
437 for(i = 0; i < cue_sheet->num_tracks; i++) {
438 if(cue_sheet->tracks[i].number == 0) {
439 if(violation) *violation = "cue sheet may not have a track number 0";
443 if(check_cd_da_subset) {
444 if(!((cue_sheet->tracks[i].number >= 1 && cue_sheet->tracks[i].number <= 99) || cue_sheet->tracks[i].number == 170)) {
445 if(violation) *violation = "CD-DA cue sheet track number must be 1-99 or 170";
450 if(check_cd_da_subset && cue_sheet->tracks[i].offset % 588 != 0) {
452 if(i == cue_sheet->num_tracks-1) /* the lead-out track... */
453 *violation = "CD-DA cue sheet lead-out offset must be evenly divisible by 588 samples";
455 *violation = "CD-DA cue sheet track offset must be evenly divisible by 588 samples";
460 if(i < cue_sheet->num_tracks - 1) {
461 if(cue_sheet->tracks[i].num_indices == 0) {
462 if(violation) *violation = "cue sheet track must have at least one index point";
466 if(cue_sheet->tracks[i].indices[0].number > 1) {
467 if(violation) *violation = "cue sheet track's first index number must be 0 or 1";
472 for(j = 0; j < cue_sheet->tracks[i].num_indices; j++) {
473 if(check_cd_da_subset && cue_sheet->tracks[i].indices[j].offset % 588 != 0) {
474 if(violation) *violation = "CD-DA cue sheet track index offset must be evenly divisible by 588 samples";
479 if(cue_sheet->tracks[i].indices[j].number != cue_sheet->tracks[i].indices[j-1].number + 1) {
480 if(violation) *violation = "cue sheet track index numbers must increase by 1";
490 /* @@@@ add to unit tests; it is already indirectly tested by the metadata_object tests */
491 FLAC_API FLAC__bool FLAC__format_picture_is_legal(const FLAC__StreamMetadata_Picture *picture, const char **violation)
496 for(p = picture->mime_type; *p; p++) {
497 if(*p < 0x20 || *p > 0x7e) {
498 if(violation) *violation = "MIME type string must contain only printable ASCII characters (0x20-0x7e)";
503 for(b = picture->description; *b; ) {
504 unsigned n = utf8len_(b);
506 if(violation) *violation = "description string must be valid UTF-8";
516 * These routines are private to libFLAC
518 unsigned FLAC__format_get_max_rice_partition_order(unsigned blocksize, unsigned predictor_order)
521 FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(
522 FLAC__format_get_max_rice_partition_order_from_blocksize(blocksize),
528 unsigned FLAC__format_get_max_rice_partition_order_from_blocksize(unsigned blocksize)
530 unsigned max_rice_partition_order = 0;
531 while(!(blocksize & 1)) {
532 max_rice_partition_order++;
535 return flac_min(FLAC__MAX_RICE_PARTITION_ORDER, max_rice_partition_order);
538 unsigned FLAC__format_get_max_rice_partition_order_from_blocksize_limited_max_and_predictor_order(unsigned limit, unsigned blocksize, unsigned predictor_order)
540 unsigned max_rice_partition_order = limit;
542 while(max_rice_partition_order > 0 && (blocksize >> max_rice_partition_order) <= predictor_order)
543 max_rice_partition_order--;
546 (max_rice_partition_order == 0 && blocksize >= predictor_order) ||
547 (max_rice_partition_order > 0 && blocksize >> max_rice_partition_order > predictor_order)
550 return max_rice_partition_order;
553 void FLAC__format_entropy_coding_method_partitioned_rice_contents_init(FLAC__EntropyCodingMethod_PartitionedRiceContents *object)
555 FLAC__ASSERT(0 != object);
557 object->parameters = 0;
558 object->raw_bits = 0;
559 object->capacity_by_order = 0;
562 void FLAC__format_entropy_coding_method_partitioned_rice_contents_clear(FLAC__EntropyCodingMethod_PartitionedRiceContents *object)
564 FLAC__ASSERT(0 != object);
566 if(0 != object->parameters)
567 free(object->parameters);
568 if(0 != object->raw_bits)
569 free(object->raw_bits);
570 FLAC__format_entropy_coding_method_partitioned_rice_contents_init(object);
573 FLAC__bool FLAC__format_entropy_coding_method_partitioned_rice_contents_ensure_size(FLAC__EntropyCodingMethod_PartitionedRiceContents *object, unsigned max_partition_order)
575 FLAC__ASSERT(0 != object);
577 FLAC__ASSERT(object->capacity_by_order > 0 || (0 == object->parameters && 0 == object->raw_bits));
579 if(object->capacity_by_order < max_partition_order) {
580 if(0 == (object->parameters = safe_realloc_(object->parameters, sizeof(unsigned)*(1 << max_partition_order))))
582 if(0 == (object->raw_bits = safe_realloc_(object->raw_bits, sizeof(unsigned)*(1 << max_partition_order))))
584 memset(object->raw_bits, 0, sizeof(unsigned)*(1 << max_partition_order));
585 object->capacity_by_order = max_partition_order;