1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2000,2001,2002,2003,2004,2005,2006 Josh Coalson
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * - Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * - Neither the name of the Xiph.org Foundation nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 #include <string.h> /* for strlen() */
38 #include "private/stream_encoder_framing.h"
39 #include "private/crc.h"
40 #include "FLAC/assert.h"
45 #define max(x,y) ((x)>(y)?(x):(y))
47 static FLAC__bool add_entropy_coding_method_(FLAC__BitBuffer *bb, const FLAC__EntropyCodingMethod *method);
48 static FLAC__bool add_residual_partitioned_rice_(FLAC__BitBuffer *bb, const FLAC__int32 residual[], const unsigned residual_samples, const unsigned predictor_order, const unsigned rice_parameters[], const unsigned raw_bits[], const unsigned partition_order);
50 FLAC__bool FLAC__add_metadata_block(const FLAC__StreamMetadata *metadata, FLAC__BitBuffer *bb)
53 const unsigned vendor_string_length = (unsigned)strlen(FLAC__VENDOR_STRING);
55 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->is_last, FLAC__STREAM_METADATA_IS_LAST_LEN))
58 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->type, FLAC__STREAM_METADATA_TYPE_LEN))
62 * First, for VORBIS_COMMENTs, adjust the length to reflect our vendor string
65 if(metadata->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
66 FLAC__ASSERT(metadata->data.vorbis_comment.vendor_string.length == 0 || 0 != metadata->data.vorbis_comment.vendor_string.entry);
67 i -= metadata->data.vorbis_comment.vendor_string.length;
68 i += vendor_string_length;
70 FLAC__ASSERT(i < (1u << FLAC__STREAM_METADATA_LENGTH_LEN));
71 if(!FLAC__bitbuffer_write_raw_uint32(bb, 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__bitbuffer_write_raw_uint32(bb, 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__bitbuffer_write_raw_uint32(bb, 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__bitbuffer_write_raw_uint32(bb, 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__bitbuffer_write_raw_uint32(bb, 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__bitbuffer_write_raw_uint32(bb, 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__bitbuffer_write_raw_uint32(bb, 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__bitbuffer_write_raw_uint32(bb, metadata->data.stream_info.bits_per_sample-1, FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN))
99 if(!FLAC__bitbuffer_write_raw_uint64(bb, metadata->data.stream_info.total_samples, FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN))
101 if(!FLAC__bitbuffer_write_byte_block(bb, metadata->data.stream_info.md5sum, 16))
104 case FLAC__METADATA_TYPE_PADDING:
105 if(!FLAC__bitbuffer_write_zeroes(bb, metadata->length * 8))
108 case FLAC__METADATA_TYPE_APPLICATION:
109 if(!FLAC__bitbuffer_write_byte_block(bb, metadata->data.application.id, FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8))
111 if(!FLAC__bitbuffer_write_byte_block(bb, metadata->data.application.data, metadata->length - (FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8)))
114 case FLAC__METADATA_TYPE_SEEKTABLE:
115 for(i = 0; i < metadata->data.seek_table.num_points; i++) {
116 if(!FLAC__bitbuffer_write_raw_uint64(bb, metadata->data.seek_table.points[i].sample_number, FLAC__STREAM_METADATA_SEEKPOINT_SAMPLE_NUMBER_LEN))
118 if(!FLAC__bitbuffer_write_raw_uint64(bb, metadata->data.seek_table.points[i].stream_offset, FLAC__STREAM_METADATA_SEEKPOINT_STREAM_OFFSET_LEN))
120 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.seek_table.points[i].frame_samples, FLAC__STREAM_METADATA_SEEKPOINT_FRAME_SAMPLES_LEN))
124 case FLAC__METADATA_TYPE_VORBIS_COMMENT:
125 if(!FLAC__bitbuffer_write_raw_uint32_little_endian(bb, vendor_string_length))
127 if(!FLAC__bitbuffer_write_byte_block(bb, (const FLAC__byte*)FLAC__VENDOR_STRING, vendor_string_length))
129 if(!FLAC__bitbuffer_write_raw_uint32_little_endian(bb, metadata->data.vorbis_comment.num_comments))
131 for(i = 0; i < metadata->data.vorbis_comment.num_comments; i++) {
132 if(!FLAC__bitbuffer_write_raw_uint32_little_endian(bb, metadata->data.vorbis_comment.comments[i].length))
134 if(!FLAC__bitbuffer_write_byte_block(bb, metadata->data.vorbis_comment.comments[i].entry, metadata->data.vorbis_comment.comments[i].length))
138 case FLAC__METADATA_TYPE_CUESHEET:
139 FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN % 8 == 0);
140 if(!FLAC__bitbuffer_write_byte_block(bb, (const FLAC__byte*)metadata->data.cue_sheet.media_catalog_number, FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN/8))
142 if(!FLAC__bitbuffer_write_raw_uint64(bb, metadata->data.cue_sheet.lead_in, FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN))
144 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.cue_sheet.is_cd? 1 : 0, FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN))
146 if(!FLAC__bitbuffer_write_zeroes(bb, FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN))
148 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.cue_sheet.num_tracks, FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN))
150 for(i = 0; i < metadata->data.cue_sheet.num_tracks; i++) {
151 const FLAC__StreamMetadata_CueSheet_Track *track = metadata->data.cue_sheet.tracks + i;
153 if(!FLAC__bitbuffer_write_raw_uint64(bb, track->offset, FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN))
155 if(!FLAC__bitbuffer_write_raw_uint32(bb, track->number, FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN))
157 FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN % 8 == 0);
158 if(!FLAC__bitbuffer_write_byte_block(bb, (const FLAC__byte*)track->isrc, FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN/8))
160 if(!FLAC__bitbuffer_write_raw_uint32(bb, track->type, FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN))
162 if(!FLAC__bitbuffer_write_raw_uint32(bb, track->pre_emphasis, FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN))
164 if(!FLAC__bitbuffer_write_zeroes(bb, FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN))
166 if(!FLAC__bitbuffer_write_raw_uint32(bb, track->num_indices, FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN))
168 for(j = 0; j < track->num_indices; j++) {
169 const FLAC__StreamMetadata_CueSheet_Index *index = track->indices + j;
171 if(!FLAC__bitbuffer_write_raw_uint64(bb, index->offset, FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN))
173 if(!FLAC__bitbuffer_write_raw_uint32(bb, index->number, FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN))
175 if(!FLAC__bitbuffer_write_zeroes(bb, FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN))
180 case FLAC__METADATA_TYPE_PICTURE:
183 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.picture.type, FLAC__STREAM_METADATA_PICTURE_TYPE_LEN))
185 len = strlen(metadata->data.picture.mime_type);
186 if(!FLAC__bitbuffer_write_raw_uint32(bb, len, FLAC__STREAM_METADATA_PICTURE_MIME_TYPE_LENGTH_LEN))
188 if(!FLAC__bitbuffer_write_byte_block(bb, (const FLAC__byte*)metadata->data.picture.mime_type, len))
190 len = strlen((const char *)metadata->data.picture.description);
191 if(!FLAC__bitbuffer_write_raw_uint32(bb, len, FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_LEN))
193 if(!FLAC__bitbuffer_write_byte_block(bb, metadata->data.picture.description, len))
195 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.picture.width, FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN))
197 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.picture.height, FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN))
199 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.picture.depth, FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN))
201 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.picture.colors, FLAC__STREAM_METADATA_PICTURE_COLORS_LEN))
203 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.picture.data_length, FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN))
205 if(!FLAC__bitbuffer_write_byte_block(bb, metadata->data.picture.data, metadata->data.picture.data_length))
210 if(!FLAC__bitbuffer_write_byte_block(bb, metadata->data.unknown.data, metadata->length))
215 FLAC__ASSERT(FLAC__bitbuffer_is_byte_aligned(bb));
219 FLAC__bool FLAC__frame_add_header(const FLAC__FrameHeader *header, FLAC__bool streamable_subset, FLAC__BitBuffer *bb)
221 unsigned u, blocksize_hint, sample_rate_hint;
223 FLAC__ASSERT(FLAC__bitbuffer_is_byte_aligned(bb));
225 if(!FLAC__bitbuffer_write_raw_uint32(bb, FLAC__FRAME_HEADER_SYNC, FLAC__FRAME_HEADER_SYNC_LEN))
228 if(!FLAC__bitbuffer_write_raw_uint32(bb, 0, FLAC__FRAME_HEADER_RESERVED_LEN))
231 FLAC__ASSERT(header->blocksize > 0 && header->blocksize <= FLAC__MAX_BLOCK_SIZE);
232 /* when this assertion holds true, any legal blocksize can be expressed in the frame header */
233 FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535u);
235 switch(header->blocksize) {
236 case 192: u = 1; break;
237 case 576: u = 2; break;
238 case 1152: u = 3; break;
239 case 2304: u = 4; break;
240 case 4608: u = 5; break;
241 case 256: u = 8; break;
242 case 512: u = 9; break;
243 case 1024: u = 10; break;
244 case 2048: u = 11; break;
245 case 4096: u = 12; break;
246 case 8192: u = 13; break;
247 case 16384: u = 14; break;
248 case 32768: u = 15; break;
250 if(header->blocksize <= 0x100)
251 blocksize_hint = u = 6;
252 else if(header->blocksize <= 0x10000)
253 blocksize_hint = u = 7;
260 if(!FLAC__bitbuffer_write_raw_uint32(bb, u, FLAC__FRAME_HEADER_BLOCK_SIZE_LEN))
263 FLAC__ASSERT(FLAC__format_sample_rate_is_valid(header->sample_rate));
264 sample_rate_hint = 0;
265 switch(header->sample_rate) {
266 case 8000: u = 4; break;
267 case 16000: u = 5; break;
268 case 22050: u = 6; break;
269 case 24000: u = 7; break;
270 case 32000: u = 8; break;
271 case 44100: u = 9; break;
272 case 48000: u = 10; break;
273 case 96000: u = 11; break;
275 if(header->sample_rate <= 255000 && header->sample_rate % 1000 == 0)
276 sample_rate_hint = u = 12;
277 else if(header->sample_rate % 10 == 0)
278 sample_rate_hint = u = 14;
279 else if(header->sample_rate <= 0xffff)
280 sample_rate_hint = u = 13;
281 else if(streamable_subset) {
289 if(!FLAC__bitbuffer_write_raw_uint32(bb, 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__bitbuffer_write_raw_uint32(bb, 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__bitbuffer_write_raw_uint32(bb, u, FLAC__FRAME_HEADER_BITS_PER_SAMPLE_LEN))
327 if(!FLAC__bitbuffer_write_raw_uint32(bb, 0, FLAC__FRAME_HEADER_ZERO_PAD_LEN))
330 FLAC__ASSERT(header->number_type == FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER);
331 if(!FLAC__bitbuffer_write_utf8_uint32(bb, header->number.frame_number))
335 if(!FLAC__bitbuffer_write_raw_uint32(bb, header->blocksize-1, (blocksize_hint==6)? 8:16))
338 switch(sample_rate_hint) {
340 if(!FLAC__bitbuffer_write_raw_uint32(bb, header->sample_rate / 1000, 8))
344 if(!FLAC__bitbuffer_write_raw_uint32(bb, header->sample_rate, 16))
348 if(!FLAC__bitbuffer_write_raw_uint32(bb, header->sample_rate / 10, 16))
354 if(!FLAC__bitbuffer_write_raw_uint32(bb, FLAC__bitbuffer_get_write_crc8(bb), FLAC__FRAME_HEADER_CRC_LEN))
360 FLAC__bool FLAC__subframe_add_constant(const FLAC__Subframe_Constant *subframe, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitBuffer *bb)
365 FLAC__bitbuffer_write_raw_uint32(bb, 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) &&
366 (wasted_bits? FLAC__bitbuffer_write_unary_unsigned(bb, wasted_bits-1) : true) &&
367 FLAC__bitbuffer_write_raw_int32(bb, subframe->value, subframe_bps)
373 FLAC__bool FLAC__subframe_add_fixed(const FLAC__Subframe_Fixed *subframe, unsigned residual_samples, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitBuffer *bb)
377 if(!FLAC__bitbuffer_write_raw_uint32(bb, 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))
380 if(!FLAC__bitbuffer_write_unary_unsigned(bb, wasted_bits-1))
383 for(i = 0; i < subframe->order; i++)
384 if(!FLAC__bitbuffer_write_raw_int32(bb, subframe->warmup[i], subframe_bps))
387 if(!add_entropy_coding_method_(bb, &subframe->entropy_coding_method))
389 switch(subframe->entropy_coding_method.type) {
390 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
391 if(!add_residual_partitioned_rice_(bb, subframe->residual, residual_samples, subframe->order, subframe->entropy_coding_method.data.partitioned_rice.contents->parameters, subframe->entropy_coding_method.data.partitioned_rice.contents->raw_bits, subframe->entropy_coding_method.data.partitioned_rice.order))
401 FLAC__bool FLAC__subframe_add_lpc(const FLAC__Subframe_LPC *subframe, unsigned residual_samples, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitBuffer *bb)
405 if(!FLAC__bitbuffer_write_raw_uint32(bb, 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))
408 if(!FLAC__bitbuffer_write_unary_unsigned(bb, wasted_bits-1))
411 for(i = 0; i < subframe->order; i++)
412 if(!FLAC__bitbuffer_write_raw_int32(bb, subframe->warmup[i], subframe_bps))
415 if(!FLAC__bitbuffer_write_raw_uint32(bb, subframe->qlp_coeff_precision-1, FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN))
417 if(!FLAC__bitbuffer_write_raw_int32(bb, subframe->quantization_level, FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN))
419 for(i = 0; i < subframe->order; i++)
420 if(!FLAC__bitbuffer_write_raw_int32(bb, subframe->qlp_coeff[i], subframe->qlp_coeff_precision))
423 if(!add_entropy_coding_method_(bb, &subframe->entropy_coding_method))
425 switch(subframe->entropy_coding_method.type) {
426 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
427 if(!add_residual_partitioned_rice_(bb, subframe->residual, residual_samples, subframe->order, subframe->entropy_coding_method.data.partitioned_rice.contents->parameters, subframe->entropy_coding_method.data.partitioned_rice.contents->raw_bits, subframe->entropy_coding_method.data.partitioned_rice.order))
437 FLAC__bool FLAC__subframe_add_verbatim(const FLAC__Subframe_Verbatim *subframe, unsigned samples, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitBuffer *bb)
440 const FLAC__int32 *signal = subframe->data;
442 if(!FLAC__bitbuffer_write_raw_uint32(bb, 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))
445 if(!FLAC__bitbuffer_write_unary_unsigned(bb, wasted_bits-1))
448 for(i = 0; i < samples; i++)
449 if(!FLAC__bitbuffer_write_raw_int32(bb, signal[i], subframe_bps))
455 FLAC__bool add_entropy_coding_method_(FLAC__BitBuffer *bb, const FLAC__EntropyCodingMethod *method)
457 if(!FLAC__bitbuffer_write_raw_uint32(bb, method->type, FLAC__ENTROPY_CODING_METHOD_TYPE_LEN))
459 switch(method->type) {
460 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
461 if(!FLAC__bitbuffer_write_raw_uint32(bb, method->data.partitioned_rice.order, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
470 FLAC__bool add_residual_partitioned_rice_(FLAC__BitBuffer *bb, const FLAC__int32 residual[], const unsigned residual_samples, const unsigned predictor_order, const unsigned rice_parameters[], const unsigned raw_bits[], const unsigned partition_order)
472 if(partition_order == 0) {
475 if(!FLAC__bitbuffer_write_raw_uint32(bb, rice_parameters[0], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN))
477 if(rice_parameters[0] < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
478 for(i = 0; i < residual_samples; i++) {
479 if(!FLAC__bitbuffer_write_rice_signed(bb, residual[i], rice_parameters[0]))
484 if(!FLAC__bitbuffer_write_raw_uint32(bb, raw_bits[0], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN))
486 for(i = 0; i < residual_samples; i++) {
487 if(!FLAC__bitbuffer_write_raw_int32(bb, residual[i], raw_bits[0]))
494 unsigned i, j, k = 0, k_last = 0;
495 unsigned partition_samples;
496 const unsigned default_partition_samples = (residual_samples+predictor_order) >> partition_order;
497 for(i = 0; i < (1u<<partition_order); i++) {
498 if(!FLAC__bitbuffer_write_raw_uint32(bb, rice_parameters[i], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN))
500 partition_samples = default_partition_samples;
502 partition_samples -= predictor_order;
503 k += partition_samples;
504 if(rice_parameters[i] < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
505 for(j = k_last; j < k; j++) {
506 if(!FLAC__bitbuffer_write_rice_signed(bb, residual[j], rice_parameters[i]))
511 if(!FLAC__bitbuffer_write_raw_uint32(bb, raw_bits[i], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN))
513 for(j = k_last; j < k; j++) {
514 if(!FLAC__bitbuffer_write_raw_int32(bb, residual[j], raw_bits[i]))