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Diffstat (limited to 'apps/codecs/libFLAC/stream_encoder_framing.c')
-rw-r--r--apps/codecs/libFLAC/stream_encoder_framing.c499
1 files changed, 0 insertions, 499 deletions
diff --git a/apps/codecs/libFLAC/stream_encoder_framing.c b/apps/codecs/libFLAC/stream_encoder_framing.c
deleted file mode 100644
index 36bf952456..0000000000
--- a/apps/codecs/libFLAC/stream_encoder_framing.c
+++ /dev/null
@@ -1,499 +0,0 @@
1/* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2000,2001,2002,2003,2004,2005 Josh Coalson
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * - Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
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.
14 *
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.
18 *
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.
30 */
31
32#include <stdio.h>
33#include <string.h> /* for strlen() */
34#include "private/stream_encoder_framing.h"
35#include "private/crc.h"
36#include "FLAC/assert.h"
37
38#ifdef max
39#undef max
40#endif
41#define max(x,y) ((x)>(y)?(x):(y))
42
43static FLAC__bool add_entropy_coding_method_(FLAC__BitBuffer *bb, const FLAC__EntropyCodingMethod *method);
44static 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);
45
46FLAC__bool FLAC__add_metadata_block(const FLAC__StreamMetadata *metadata, FLAC__BitBuffer *bb)
47{
48 unsigned i, j;
49 const unsigned vendor_string_length = (unsigned)strlen(FLAC__VENDOR_STRING);
50
51 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->is_last, FLAC__STREAM_METADATA_IS_LAST_LEN))
52 return false;
53
54 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->type, FLAC__STREAM_METADATA_TYPE_LEN))
55 return false;
56
57 /*
58 * First, for VORBIS_COMMENTs, adjust the length to reflect our vendor string
59 */
60 i = metadata->length;
61 if(metadata->type == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
62 FLAC__ASSERT(metadata->data.vorbis_comment.vendor_string.length == 0 || 0 != metadata->data.vorbis_comment.vendor_string.entry);
63 i -= metadata->data.vorbis_comment.vendor_string.length;
64 i += vendor_string_length;
65 }
66 FLAC__ASSERT(i < (1u << FLAC__STREAM_METADATA_LENGTH_LEN));
67 if(!FLAC__bitbuffer_write_raw_uint32(bb, i, FLAC__STREAM_METADATA_LENGTH_LEN))
68 return false;
69
70 switch(metadata->type) {
71 case FLAC__METADATA_TYPE_STREAMINFO:
72 FLAC__ASSERT(metadata->data.stream_info.min_blocksize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN));
73 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.stream_info.min_blocksize, FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN))
74 return false;
75 FLAC__ASSERT(metadata->data.stream_info.max_blocksize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN));
76 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.stream_info.max_blocksize, FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN))
77 return false;
78 FLAC__ASSERT(metadata->data.stream_info.min_framesize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN));
79 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.stream_info.min_framesize, FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN))
80 return false;
81 FLAC__ASSERT(metadata->data.stream_info.max_framesize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN));
82 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.stream_info.max_framesize, FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN))
83 return false;
84 FLAC__ASSERT(FLAC__format_sample_rate_is_valid(metadata->data.stream_info.sample_rate));
85 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.stream_info.sample_rate, FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN))
86 return false;
87 FLAC__ASSERT(metadata->data.stream_info.channels > 0);
88 FLAC__ASSERT(metadata->data.stream_info.channels <= (1u << FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN));
89 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.stream_info.channels-1, FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN))
90 return false;
91 FLAC__ASSERT(metadata->data.stream_info.bits_per_sample > 0);
92 FLAC__ASSERT(metadata->data.stream_info.bits_per_sample <= (1u << FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN));
93 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.stream_info.bits_per_sample-1, FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN))
94 return false;
95 if(!FLAC__bitbuffer_write_raw_uint64(bb, metadata->data.stream_info.total_samples, FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN))
96 return false;
97 if(!FLAC__bitbuffer_write_byte_block(bb, metadata->data.stream_info.md5sum, 16))
98 return false;
99 break;
100 case FLAC__METADATA_TYPE_PADDING:
101 if(!FLAC__bitbuffer_write_zeroes(bb, metadata->length * 8))
102 return false;
103 break;
104 case FLAC__METADATA_TYPE_APPLICATION:
105 if(!FLAC__bitbuffer_write_byte_block(bb, metadata->data.application.id, FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8))
106 return false;
107 if(!FLAC__bitbuffer_write_byte_block(bb, metadata->data.application.data, metadata->length - (FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8)))
108 return false;
109 break;
110 case FLAC__METADATA_TYPE_SEEKTABLE:
111 for(i = 0; i < metadata->data.seek_table.num_points; i++) {
112 if(!FLAC__bitbuffer_write_raw_uint64(bb, metadata->data.seek_table.points[i].sample_number, FLAC__STREAM_METADATA_SEEKPOINT_SAMPLE_NUMBER_LEN))
113 return false;
114 if(!FLAC__bitbuffer_write_raw_uint64(bb, metadata->data.seek_table.points[i].stream_offset, FLAC__STREAM_METADATA_SEEKPOINT_STREAM_OFFSET_LEN))
115 return false;
116 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.seek_table.points[i].frame_samples, FLAC__STREAM_METADATA_SEEKPOINT_FRAME_SAMPLES_LEN))
117 return false;
118 }
119 break;
120 case FLAC__METADATA_TYPE_VORBIS_COMMENT:
121 if(!FLAC__bitbuffer_write_raw_uint32_little_endian(bb, vendor_string_length))
122 return false;
123 if(!FLAC__bitbuffer_write_byte_block(bb, (const FLAC__byte*)FLAC__VENDOR_STRING, vendor_string_length))
124 return false;
125 if(!FLAC__bitbuffer_write_raw_uint32_little_endian(bb, metadata->data.vorbis_comment.num_comments))
126 return false;
127 for(i = 0; i < metadata->data.vorbis_comment.num_comments; i++) {
128 if(!FLAC__bitbuffer_write_raw_uint32_little_endian(bb, metadata->data.vorbis_comment.comments[i].length))
129 return false;
130 if(!FLAC__bitbuffer_write_byte_block(bb, metadata->data.vorbis_comment.comments[i].entry, metadata->data.vorbis_comment.comments[i].length))
131 return false;
132 }
133 break;
134 case FLAC__METADATA_TYPE_CUESHEET:
135 FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN % 8 == 0);
136 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))
137 return false;
138 if(!FLAC__bitbuffer_write_raw_uint64(bb, metadata->data.cue_sheet.lead_in, FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN))
139 return false;
140 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.cue_sheet.is_cd? 1 : 0, FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN))
141 return false;
142 if(!FLAC__bitbuffer_write_zeroes(bb, FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN))
143 return false;
144 if(!FLAC__bitbuffer_write_raw_uint32(bb, metadata->data.cue_sheet.num_tracks, FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN))
145 return false;
146 for(i = 0; i < metadata->data.cue_sheet.num_tracks; i++) {
147 const FLAC__StreamMetadata_CueSheet_Track *track = metadata->data.cue_sheet.tracks + i;
148
149 if(!FLAC__bitbuffer_write_raw_uint64(bb, track->offset, FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN))
150 return false;
151 if(!FLAC__bitbuffer_write_raw_uint32(bb, track->number, FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN))
152 return false;
153 FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN % 8 == 0);
154 if(!FLAC__bitbuffer_write_byte_block(bb, (const FLAC__byte*)track->isrc, FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN/8))
155 return false;
156 if(!FLAC__bitbuffer_write_raw_uint32(bb, track->type, FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN))
157 return false;
158 if(!FLAC__bitbuffer_write_raw_uint32(bb, track->pre_emphasis, FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN))
159 return false;
160 if(!FLAC__bitbuffer_write_zeroes(bb, FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN))
161 return false;
162 if(!FLAC__bitbuffer_write_raw_uint32(bb, track->num_indices, FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN))
163 return false;
164 for(j = 0; j < track->num_indices; j++) {
165 const FLAC__StreamMetadata_CueSheet_Index *index = track->indices + j;
166
167 if(!FLAC__bitbuffer_write_raw_uint64(bb, index->offset, FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN))
168 return false;
169 if(!FLAC__bitbuffer_write_raw_uint32(bb, index->number, FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN))
170 return false;
171 if(!FLAC__bitbuffer_write_zeroes(bb, FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN))
172 return false;
173 }
174 }
175 break;
176 default:
177 if(!FLAC__bitbuffer_write_byte_block(bb, metadata->data.unknown.data, metadata->length))
178 return false;
179 break;
180 }
181
182 FLAC__ASSERT(FLAC__bitbuffer_is_byte_aligned(bb));
183 return true;
184}
185
186FLAC__bool FLAC__frame_add_header(const FLAC__FrameHeader *header, FLAC__bool streamable_subset, FLAC__BitBuffer *bb)
187{
188 unsigned u, blocksize_hint, sample_rate_hint;
189
190 FLAC__ASSERT(FLAC__bitbuffer_is_byte_aligned(bb));
191
192 if(!FLAC__bitbuffer_write_raw_uint32(bb, FLAC__FRAME_HEADER_SYNC, FLAC__FRAME_HEADER_SYNC_LEN))
193 return false;
194
195 if(!FLAC__bitbuffer_write_raw_uint32(bb, 0, FLAC__FRAME_HEADER_RESERVED_LEN))
196 return false;
197
198 FLAC__ASSERT(header->blocksize > 0 && header->blocksize <= FLAC__MAX_BLOCK_SIZE);
199 /* when this assertion holds true, any legal blocksize can be expressed in the frame header */
200 FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535u);
201 blocksize_hint = 0;
202 switch(header->blocksize) {
203 case 192: u = 1; break;
204 case 576: u = 2; break;
205 case 1152: u = 3; break;
206 case 2304: u = 4; break;
207 case 4608: u = 5; break;
208 case 256: u = 8; break;
209 case 512: u = 9; break;
210 case 1024: u = 10; break;
211 case 2048: u = 11; break;
212 case 4096: u = 12; break;
213 case 8192: u = 13; break;
214 case 16384: u = 14; break;
215 case 32768: u = 15; break;
216 default:
217 if(header->blocksize <= 0x100)
218 blocksize_hint = u = 6;
219 else if(header->blocksize <= 0x10000)
220 blocksize_hint = u = 7;
221 else {
222 FLAC__ASSERT(0);
223 return false;
224 }
225 break;
226 }
227 if(!FLAC__bitbuffer_write_raw_uint32(bb, u, FLAC__FRAME_HEADER_BLOCK_SIZE_LEN))
228 return false;
229
230 FLAC__ASSERT(FLAC__format_sample_rate_is_valid(header->sample_rate));
231 sample_rate_hint = 0;
232 switch(header->sample_rate) {
233 case 8000: u = 4; break;
234 case 16000: u = 5; break;
235 case 22050: u = 6; break;
236 case 24000: u = 7; break;
237 case 32000: u = 8; break;
238 case 44100: u = 9; break;
239 case 48000: u = 10; break;
240 case 96000: u = 11; break;
241 default:
242 if(header->sample_rate <= 255000 && header->sample_rate % 1000 == 0)
243 sample_rate_hint = u = 12;
244 else if(header->sample_rate % 10 == 0)
245 sample_rate_hint = u = 14;
246 else if(header->sample_rate <= 0xffff)
247 sample_rate_hint = u = 13;
248 else if(streamable_subset) {
249 FLAC__ASSERT(0);
250 return false;
251 }
252 else
253 u = 0;
254 break;
255 }
256 if(!FLAC__bitbuffer_write_raw_uint32(bb, u, FLAC__FRAME_HEADER_SAMPLE_RATE_LEN))
257 return false;
258
259 FLAC__ASSERT(header->channels > 0 && header->channels <= (1u << FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN) && header->channels <= FLAC__MAX_CHANNELS);
260 switch(header->channel_assignment) {
261 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
262 u = header->channels - 1;
263 break;
264 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
265 FLAC__ASSERT(header->channels == 2);
266 u = 8;
267 break;
268 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
269 FLAC__ASSERT(header->channels == 2);
270 u = 9;
271 break;
272 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
273 FLAC__ASSERT(header->channels == 2);
274 u = 10;
275 break;
276 default:
277 FLAC__ASSERT(0);
278 }
279 if(!FLAC__bitbuffer_write_raw_uint32(bb, u, FLAC__FRAME_HEADER_CHANNEL_ASSIGNMENT_LEN))
280 return false;
281
282 FLAC__ASSERT(header->bits_per_sample > 0 && header->bits_per_sample <= (1u << FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN));
283 switch(header->bits_per_sample) {
284 case 8 : u = 1; break;
285 case 12: u = 2; break;
286 case 16: u = 4; break;
287 case 20: u = 5; break;
288 case 24: u = 6; break;
289 default: u = 0; break;
290 }
291 if(!FLAC__bitbuffer_write_raw_uint32(bb, u, FLAC__FRAME_HEADER_BITS_PER_SAMPLE_LEN))
292 return false;
293
294 if(!FLAC__bitbuffer_write_raw_uint32(bb, 0, FLAC__FRAME_HEADER_ZERO_PAD_LEN))
295 return false;
296
297 FLAC__ASSERT(header->number_type == FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER);
298 if(!FLAC__bitbuffer_write_utf8_uint32(bb, header->number.frame_number))
299 return false;
300
301 if(blocksize_hint)
302 if(!FLAC__bitbuffer_write_raw_uint32(bb, header->blocksize-1, (blocksize_hint==6)? 8:16))
303 return false;
304
305 switch(sample_rate_hint) {
306 case 12:
307 if(!FLAC__bitbuffer_write_raw_uint32(bb, header->sample_rate / 1000, 8))
308 return false;
309 break;
310 case 13:
311 if(!FLAC__bitbuffer_write_raw_uint32(bb, header->sample_rate, 16))
312 return false;
313 break;
314 case 14:
315 if(!FLAC__bitbuffer_write_raw_uint32(bb, header->sample_rate / 10, 16))
316 return false;
317 break;
318 }
319
320 /* write the CRC */
321 if(!FLAC__bitbuffer_write_raw_uint32(bb, FLAC__bitbuffer_get_write_crc8(bb), FLAC__FRAME_HEADER_CRC_LEN))
322 return false;
323
324 return true;
325}
326
327FLAC__bool FLAC__subframe_add_constant(const FLAC__Subframe_Constant *subframe, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitBuffer *bb)
328{
329 FLAC__bool ok;
330
331 ok =
332 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) &&
333 (wasted_bits? FLAC__bitbuffer_write_unary_unsigned(bb, wasted_bits-1) : true) &&
334 FLAC__bitbuffer_write_raw_int32(bb, subframe->value, subframe_bps)
335 ;
336
337 return ok;
338}
339
340FLAC__bool FLAC__subframe_add_fixed(const FLAC__Subframe_Fixed *subframe, unsigned residual_samples, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitBuffer *bb)
341{
342 unsigned i;
343
344 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))
345 return false;
346 if(wasted_bits)
347 if(!FLAC__bitbuffer_write_unary_unsigned(bb, wasted_bits-1))
348 return false;
349
350 for(i = 0; i < subframe->order; i++)
351 if(!FLAC__bitbuffer_write_raw_int32(bb, subframe->warmup[i], subframe_bps))
352 return false;
353
354 if(!add_entropy_coding_method_(bb, &subframe->entropy_coding_method))
355 return false;
356 switch(subframe->entropy_coding_method.type) {
357 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
358 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))
359 return false;
360 break;
361 default:
362 FLAC__ASSERT(0);
363 }
364
365 return true;
366}
367
368FLAC__bool FLAC__subframe_add_lpc(const FLAC__Subframe_LPC *subframe, unsigned residual_samples, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitBuffer *bb)
369{
370 unsigned i;
371
372 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))
373 return false;
374 if(wasted_bits)
375 if(!FLAC__bitbuffer_write_unary_unsigned(bb, wasted_bits-1))
376 return false;
377
378 for(i = 0; i < subframe->order; i++)
379 if(!FLAC__bitbuffer_write_raw_int32(bb, subframe->warmup[i], subframe_bps))
380 return false;
381
382 if(!FLAC__bitbuffer_write_raw_uint32(bb, subframe->qlp_coeff_precision-1, FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN))
383 return false;
384 if(!FLAC__bitbuffer_write_raw_int32(bb, subframe->quantization_level, FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN))
385 return false;
386 for(i = 0; i < subframe->order; i++)
387 if(!FLAC__bitbuffer_write_raw_int32(bb, subframe->qlp_coeff[i], subframe->qlp_coeff_precision))
388 return false;
389
390 if(!add_entropy_coding_method_(bb, &subframe->entropy_coding_method))
391 return false;
392 switch(subframe->entropy_coding_method.type) {
393 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
394 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))
395 return false;
396 break;
397 default:
398 FLAC__ASSERT(0);
399 }
400
401 return true;
402}
403
404FLAC__bool FLAC__subframe_add_verbatim(const FLAC__Subframe_Verbatim *subframe, unsigned samples, unsigned subframe_bps, unsigned wasted_bits, FLAC__BitBuffer *bb)
405{
406 unsigned i;
407 const FLAC__int32 *signal = subframe->data;
408
409 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))
410 return false;
411 if(wasted_bits)
412 if(!FLAC__bitbuffer_write_unary_unsigned(bb, wasted_bits-1))
413 return false;
414
415 for(i = 0; i < samples; i++)
416 if(!FLAC__bitbuffer_write_raw_int32(bb, signal[i], subframe_bps))
417 return false;
418
419 return true;
420}
421
422FLAC__bool add_entropy_coding_method_(FLAC__BitBuffer *bb, const FLAC__EntropyCodingMethod *method)
423{
424 if(!FLAC__bitbuffer_write_raw_uint32(bb, method->type, FLAC__ENTROPY_CODING_METHOD_TYPE_LEN))
425 return false;
426 switch(method->type) {
427 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
428 if(!FLAC__bitbuffer_write_raw_uint32(bb, method->data.partitioned_rice.order, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
429 return false;
430 break;
431 default:
432 FLAC__ASSERT(0);
433 }
434 return true;
435}
436
437FLAC__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)
438{
439 if(partition_order == 0) {
440 unsigned i;
441
442 if(!FLAC__bitbuffer_write_raw_uint32(bb, rice_parameters[0], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN))
443 return false;
444 if(rice_parameters[0] < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
445 for(i = 0; i < residual_samples; i++) {
446#ifdef FLAC__SYMMETRIC_RICE
447 if(!FLAC__bitbuffer_write_symmetric_rice_signed(bb, residual[i], rice_parameters[0]))
448 return false;
449#else
450 if(!FLAC__bitbuffer_write_rice_signed(bb, residual[i], rice_parameters[0]))
451 return false;
452#endif
453 }
454 }
455 else {
456 if(!FLAC__bitbuffer_write_raw_uint32(bb, raw_bits[0], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN))
457 return false;
458 for(i = 0; i < residual_samples; i++) {
459 if(!FLAC__bitbuffer_write_raw_int32(bb, residual[i], raw_bits[0]))
460 return false;
461 }
462 }
463 return true;
464 }
465 else {
466 unsigned i, j, k = 0, k_last = 0;
467 unsigned partition_samples;
468 const unsigned default_partition_samples = (residual_samples+predictor_order) >> partition_order;
469 for(i = 0; i < (1u<<partition_order); i++) {
470 if(!FLAC__bitbuffer_write_raw_uint32(bb, rice_parameters[i], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN))
471 return false;
472 partition_samples = default_partition_samples;
473 if(i == 0)
474 partition_samples -= predictor_order;
475 k += partition_samples;
476 if(rice_parameters[i] < FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER) {
477 for(j = k_last; j < k; j++) {
478#ifdef FLAC__SYMMETRIC_RICE
479 if(!FLAC__bitbuffer_write_symmetric_rice_signed(bb, residual[j], rice_parameters[i]))
480 return false;
481#else
482 if(!FLAC__bitbuffer_write_rice_signed(bb, residual[j], rice_parameters[i]))
483 return false;
484#endif
485 }
486 }
487 else {
488 if(!FLAC__bitbuffer_write_raw_uint32(bb, raw_bits[i], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN))
489 return false;
490 for(j = k_last; j < k; j++) {
491 if(!FLAC__bitbuffer_write_raw_int32(bb, residual[j], raw_bits[i]))
492 return false;
493 }
494 }
495 k_last = k;
496 }
497 return true;
498 }
499}
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-20 01:46:44 +0000