1 /* libFLAC - Free Lossless Audio Codec library
2 * Copyright (C) 2000-2009 Josh Coalson
3 * Copyright (C) 2011-2022 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 <stdio.h>
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"
43
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 uint32_t residual_samples, const uint32_t predictor_order, const uint32_t rice_parameters[], const uint32_t raw_bits[], const uint32_t partition_order, const FLAC__bool is_extended);
46
FLAC__add_metadata_block(const FLAC__StreamMetadata * metadata,FLAC__BitWriter * bw)47 FLAC__bool FLAC__add_metadata_block(const FLAC__StreamMetadata *metadata, FLAC__BitWriter *bw)
48 {
49 uint32_t i, j, metadata_length;
50 const uint32_t vendor_string_length = (uint32_t)strlen(FLAC__VENDOR_STRING);
51 const uint32_t start_bits = FLAC__bitwriter_get_input_bits_unconsumed(bw);
52
53 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(bw));
54
55 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->is_last, FLAC__STREAM_METADATA_IS_LAST_LEN))
56 return false;
57
58 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->type, FLAC__STREAM_METADATA_TYPE_LEN))
59 return false;
60
61 /*
62 * First, for VORBIS_COMMENTs, adjust the length to reflect our vendor string
63 */
64 metadata_length = metadata->length;
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 metadata_length -= metadata->data.vorbis_comment.vendor_string.length;
68 metadata_length += vendor_string_length;
69 }
70 FLAC__ASSERT(metadata_length < (1u << FLAC__STREAM_METADATA_LENGTH_LEN));
71 /* double protection */
72 if(metadata_length >= (1u << FLAC__STREAM_METADATA_LENGTH_LEN))
73 return false;
74 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata_length, FLAC__STREAM_METADATA_LENGTH_LEN))
75 return false;
76
77 switch(metadata->type) {
78 case FLAC__METADATA_TYPE_STREAMINFO:
79 FLAC__ASSERT(metadata->data.stream_info.min_blocksize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN));
80 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.min_blocksize, FLAC__STREAM_METADATA_STREAMINFO_MIN_BLOCK_SIZE_LEN))
81 return false;
82 FLAC__ASSERT(metadata->data.stream_info.max_blocksize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN));
83 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.max_blocksize, FLAC__STREAM_METADATA_STREAMINFO_MAX_BLOCK_SIZE_LEN))
84 return false;
85 FLAC__ASSERT(metadata->data.stream_info.min_framesize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN));
86 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.min_framesize, FLAC__STREAM_METADATA_STREAMINFO_MIN_FRAME_SIZE_LEN))
87 return false;
88 FLAC__ASSERT(metadata->data.stream_info.max_framesize < (1u << FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN));
89 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.max_framesize, FLAC__STREAM_METADATA_STREAMINFO_MAX_FRAME_SIZE_LEN))
90 return false;
91 FLAC__ASSERT(FLAC__format_sample_rate_is_valid(metadata->data.stream_info.sample_rate));
92 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.sample_rate, FLAC__STREAM_METADATA_STREAMINFO_SAMPLE_RATE_LEN))
93 return false;
94 FLAC__ASSERT(metadata->data.stream_info.channels > 0);
95 FLAC__ASSERT(metadata->data.stream_info.channels <= (1u << FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN));
96 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.channels-1, FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN))
97 return false;
98 FLAC__ASSERT(metadata->data.stream_info.bits_per_sample > 0);
99 FLAC__ASSERT(metadata->data.stream_info.bits_per_sample <= (1u << FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN));
100 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.stream_info.bits_per_sample-1, FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN))
101 return false;
102 if(metadata->data.stream_info.total_samples >= (FLAC__U64L(1) << FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN)){
103 if(!FLAC__bitwriter_write_raw_uint64(bw, 0, FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN))
104 return false;
105 }else{
106 if(!FLAC__bitwriter_write_raw_uint64(bw, metadata->data.stream_info.total_samples, FLAC__STREAM_METADATA_STREAMINFO_TOTAL_SAMPLES_LEN))
107 return false;
108 }
109 if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.stream_info.md5sum, 16))
110 return false;
111 break;
112 case FLAC__METADATA_TYPE_PADDING:
113 if(!FLAC__bitwriter_write_zeroes(bw, metadata->length * 8))
114 return false;
115 break;
116 case FLAC__METADATA_TYPE_APPLICATION:
117 if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.application.id, FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8))
118 return false;
119 if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.application.data, metadata->length - (FLAC__STREAM_METADATA_APPLICATION_ID_LEN / 8)))
120 return false;
121 break;
122 case FLAC__METADATA_TYPE_SEEKTABLE:
123 for(i = 0; i < metadata->data.seek_table.num_points; i++) {
124 if(!FLAC__bitwriter_write_raw_uint64(bw, metadata->data.seek_table.points[i].sample_number, FLAC__STREAM_METADATA_SEEKPOINT_SAMPLE_NUMBER_LEN))
125 return false;
126 if(!FLAC__bitwriter_write_raw_uint64(bw, metadata->data.seek_table.points[i].stream_offset, FLAC__STREAM_METADATA_SEEKPOINT_STREAM_OFFSET_LEN))
127 return false;
128 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.seek_table.points[i].frame_samples, FLAC__STREAM_METADATA_SEEKPOINT_FRAME_SAMPLES_LEN))
129 return false;
130 }
131 break;
132 case FLAC__METADATA_TYPE_VORBIS_COMMENT:
133 if(!FLAC__bitwriter_write_raw_uint32_little_endian(bw, vendor_string_length))
134 return false;
135 if(!FLAC__bitwriter_write_byte_block(bw, (const FLAC__byte*)FLAC__VENDOR_STRING, vendor_string_length))
136 return false;
137 if(!FLAC__bitwriter_write_raw_uint32_little_endian(bw, metadata->data.vorbis_comment.num_comments))
138 return false;
139 for(i = 0; i < metadata->data.vorbis_comment.num_comments; i++) {
140 if(!FLAC__bitwriter_write_raw_uint32_little_endian(bw, metadata->data.vorbis_comment.comments[i].length))
141 return false;
142 if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.vorbis_comment.comments[i].entry, metadata->data.vorbis_comment.comments[i].length))
143 return false;
144 }
145 break;
146 case FLAC__METADATA_TYPE_CUESHEET:
147 FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_MEDIA_CATALOG_NUMBER_LEN % 8 == 0);
148 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))
149 return false;
150 if(!FLAC__bitwriter_write_raw_uint64(bw, metadata->data.cue_sheet.lead_in, FLAC__STREAM_METADATA_CUESHEET_LEAD_IN_LEN))
151 return false;
152 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.cue_sheet.is_cd? 1 : 0, FLAC__STREAM_METADATA_CUESHEET_IS_CD_LEN))
153 return false;
154 if(!FLAC__bitwriter_write_zeroes(bw, FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN))
155 return false;
156 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.cue_sheet.num_tracks, FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN))
157 return false;
158 for(i = 0; i < metadata->data.cue_sheet.num_tracks; i++) {
159 const FLAC__StreamMetadata_CueSheet_Track *track = metadata->data.cue_sheet.tracks + i;
160
161 if(!FLAC__bitwriter_write_raw_uint64(bw, track->offset, FLAC__STREAM_METADATA_CUESHEET_TRACK_OFFSET_LEN))
162 return false;
163 if(!FLAC__bitwriter_write_raw_uint32(bw, track->number, FLAC__STREAM_METADATA_CUESHEET_TRACK_NUMBER_LEN))
164 return false;
165 FLAC__ASSERT(FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN % 8 == 0);
166 if(!FLAC__bitwriter_write_byte_block(bw, (const FLAC__byte*)track->isrc, FLAC__STREAM_METADATA_CUESHEET_TRACK_ISRC_LEN/8))
167 return false;
168 if(!FLAC__bitwriter_write_raw_uint32(bw, track->type, FLAC__STREAM_METADATA_CUESHEET_TRACK_TYPE_LEN))
169 return false;
170 if(!FLAC__bitwriter_write_raw_uint32(bw, track->pre_emphasis, FLAC__STREAM_METADATA_CUESHEET_TRACK_PRE_EMPHASIS_LEN))
171 return false;
172 if(!FLAC__bitwriter_write_zeroes(bw, FLAC__STREAM_METADATA_CUESHEET_TRACK_RESERVED_LEN))
173 return false;
174 if(!FLAC__bitwriter_write_raw_uint32(bw, track->num_indices, FLAC__STREAM_METADATA_CUESHEET_TRACK_NUM_INDICES_LEN))
175 return false;
176 for(j = 0; j < track->num_indices; j++) {
177 const FLAC__StreamMetadata_CueSheet_Index *indx = track->indices + j;
178
179 if(!FLAC__bitwriter_write_raw_uint64(bw, indx->offset, FLAC__STREAM_METADATA_CUESHEET_INDEX_OFFSET_LEN))
180 return false;
181 if(!FLAC__bitwriter_write_raw_uint32(bw, indx->number, FLAC__STREAM_METADATA_CUESHEET_INDEX_NUMBER_LEN))
182 return false;
183 if(!FLAC__bitwriter_write_zeroes(bw, FLAC__STREAM_METADATA_CUESHEET_INDEX_RESERVED_LEN))
184 return false;
185 }
186 }
187 break;
188 case FLAC__METADATA_TYPE_PICTURE:
189 {
190 size_t len;
191 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.type, FLAC__STREAM_METADATA_PICTURE_TYPE_LEN))
192 return false;
193 len = strlen(metadata->data.picture.mime_type);
194 if(!FLAC__bitwriter_write_raw_uint32(bw, len, FLAC__STREAM_METADATA_PICTURE_MIME_TYPE_LENGTH_LEN))
195 return false;
196 if(!FLAC__bitwriter_write_byte_block(bw, (const FLAC__byte*)metadata->data.picture.mime_type, len))
197 return false;
198 len = strlen((const char *)metadata->data.picture.description);
199 if(!FLAC__bitwriter_write_raw_uint32(bw, len, FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_LEN))
200 return false;
201 if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.picture.description, len))
202 return false;
203 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.width, FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN))
204 return false;
205 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.height, FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN))
206 return false;
207 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.depth, FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN))
208 return false;
209 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.colors, FLAC__STREAM_METADATA_PICTURE_COLORS_LEN))
210 return false;
211 if(!FLAC__bitwriter_write_raw_uint32(bw, metadata->data.picture.data_length, FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN))
212 return false;
213 if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.picture.data, metadata->data.picture.data_length))
214 return false;
215 }
216 break;
217 default:
218 if(!FLAC__bitwriter_write_byte_block(bw, metadata->data.unknown.data, metadata->length))
219 return false;
220 break;
221 }
222
223 /* Now check whether metadata block length was correct */
224 {
225 uint32_t length_in_bits = FLAC__bitwriter_get_input_bits_unconsumed(bw);
226 if(length_in_bits < start_bits)
227 return false;
228 length_in_bits -= start_bits;
229 if(length_in_bits % 8 != 0 || length_in_bits != (metadata_length*8+32))
230 return false;
231 }
232
233 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(bw));
234 return true;
235 }
236
FLAC__frame_add_header(const FLAC__FrameHeader * header,FLAC__BitWriter * bw)237 FLAC__bool FLAC__frame_add_header(const FLAC__FrameHeader *header, FLAC__BitWriter *bw)
238 {
239 uint32_t u, blocksize_hint, sample_rate_hint;
240 FLAC__byte crc;
241
242 FLAC__ASSERT(FLAC__bitwriter_is_byte_aligned(bw));
243
244 if(!FLAC__bitwriter_write_raw_uint32(bw, FLAC__FRAME_HEADER_SYNC, FLAC__FRAME_HEADER_SYNC_LEN))
245 return false;
246
247 if(!FLAC__bitwriter_write_raw_uint32(bw, 0, FLAC__FRAME_HEADER_RESERVED_LEN))
248 return false;
249
250 if(!FLAC__bitwriter_write_raw_uint32(bw, (header->number_type == FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER)? 0 : 1, FLAC__FRAME_HEADER_BLOCKING_STRATEGY_LEN))
251 return false;
252
253 FLAC__ASSERT(header->blocksize > 0 && header->blocksize <= FLAC__MAX_BLOCK_SIZE);
254 /* when this assertion holds true, any legal blocksize can be expressed in the frame header */
255 FLAC__ASSERT(FLAC__MAX_BLOCK_SIZE <= 65535u);
256 blocksize_hint = 0;
257 switch(header->blocksize) {
258 case 192: u = 1; break;
259 case 576: u = 2; break;
260 case 1152: u = 3; break;
261 case 2304: u = 4; break;
262 case 4608: u = 5; break;
263 case 256: u = 8; break;
264 case 512: u = 9; break;
265 case 1024: u = 10; break;
266 case 2048: u = 11; break;
267 case 4096: u = 12; break;
268 case 8192: u = 13; break;
269 case 16384: u = 14; break;
270 case 32768: u = 15; break;
271 default:
272 if(header->blocksize <= 0x100)
273 blocksize_hint = u = 6;
274 else
275 blocksize_hint = u = 7;
276 break;
277 }
278 if(!FLAC__bitwriter_write_raw_uint32(bw, u, FLAC__FRAME_HEADER_BLOCK_SIZE_LEN))
279 return false;
280
281 FLAC__ASSERT(FLAC__format_sample_rate_is_valid(header->sample_rate));
282 sample_rate_hint = 0;
283 switch(header->sample_rate) {
284 case 88200: u = 1; break;
285 case 176400: u = 2; break;
286 case 192000: u = 3; break;
287 case 8000: u = 4; break;
288 case 16000: u = 5; break;
289 case 22050: u = 6; break;
290 case 24000: u = 7; break;
291 case 32000: u = 8; break;
292 case 44100: u = 9; break;
293 case 48000: u = 10; break;
294 case 96000: u = 11; break;
295 default:
296 if(header->sample_rate <= 255000 && header->sample_rate % 1000 == 0)
297 sample_rate_hint = u = 12;
298 else if(header->sample_rate <= 655350 && header->sample_rate % 10 == 0)
299 sample_rate_hint = u = 14;
300 else if(header->sample_rate <= 0xffff)
301 sample_rate_hint = u = 13;
302 else
303 u = 0;
304 break;
305 }
306 if(!FLAC__bitwriter_write_raw_uint32(bw, u, FLAC__FRAME_HEADER_SAMPLE_RATE_LEN))
307 return false;
308
309 FLAC__ASSERT(header->channels > 0 && header->channels <= (1u << FLAC__STREAM_METADATA_STREAMINFO_CHANNELS_LEN) && header->channels <= FLAC__MAX_CHANNELS);
310 switch(header->channel_assignment) {
311 case FLAC__CHANNEL_ASSIGNMENT_INDEPENDENT:
312 u = header->channels - 1;
313 break;
314 case FLAC__CHANNEL_ASSIGNMENT_LEFT_SIDE:
315 FLAC__ASSERT(header->channels == 2);
316 u = 8;
317 break;
318 case FLAC__CHANNEL_ASSIGNMENT_RIGHT_SIDE:
319 FLAC__ASSERT(header->channels == 2);
320 u = 9;
321 break;
322 case FLAC__CHANNEL_ASSIGNMENT_MID_SIDE:
323 FLAC__ASSERT(header->channels == 2);
324 u = 10;
325 break;
326 default:
327 FLAC__ASSERT(0);
328 }
329 if(!FLAC__bitwriter_write_raw_uint32(bw, u, FLAC__FRAME_HEADER_CHANNEL_ASSIGNMENT_LEN))
330 return false;
331
332 FLAC__ASSERT(header->bits_per_sample > 0 && header->bits_per_sample <= (1u << FLAC__STREAM_METADATA_STREAMINFO_BITS_PER_SAMPLE_LEN));
333 switch(header->bits_per_sample) {
334 case 8 : u = 1; break;
335 case 12: u = 2; break;
336 case 16: u = 4; break;
337 case 20: u = 5; break;
338 case 24: u = 6; break;
339 case 32: u = 7; break;
340 default: u = 0; break;
341 }
342 if(!FLAC__bitwriter_write_raw_uint32(bw, u, FLAC__FRAME_HEADER_BITS_PER_SAMPLE_LEN))
343 return false;
344
345 if(!FLAC__bitwriter_write_raw_uint32(bw, 0, FLAC__FRAME_HEADER_ZERO_PAD_LEN))
346 return false;
347
348 if(header->number_type == FLAC__FRAME_NUMBER_TYPE_FRAME_NUMBER) {
349 if(!FLAC__bitwriter_write_utf8_uint32(bw, header->number.frame_number))
350 return false;
351 }
352 else {
353 if(!FLAC__bitwriter_write_utf8_uint64(bw, header->number.sample_number))
354 return false;
355 }
356
357 if(blocksize_hint)
358 if(!FLAC__bitwriter_write_raw_uint32(bw, header->blocksize-1, (blocksize_hint==6)? 8:16))
359 return false;
360
361 switch(sample_rate_hint) {
362 case 12:
363 if(!FLAC__bitwriter_write_raw_uint32(bw, header->sample_rate / 1000, 8))
364 return false;
365 break;
366 case 13:
367 if(!FLAC__bitwriter_write_raw_uint32(bw, header->sample_rate, 16))
368 return false;
369 break;
370 case 14:
371 if(!FLAC__bitwriter_write_raw_uint32(bw, header->sample_rate / 10, 16))
372 return false;
373 break;
374 }
375
376 /* write the CRC */
377 if(!FLAC__bitwriter_get_write_crc8(bw, &crc))
378 return false;
379 if(!FLAC__bitwriter_write_raw_uint32(bw, crc, FLAC__FRAME_HEADER_CRC_LEN))
380 return false;
381
382 return true;
383 }
384
FLAC__subframe_add_constant(const FLAC__Subframe_Constant * subframe,uint32_t subframe_bps,uint32_t wasted_bits,FLAC__BitWriter * bw)385 FLAC__bool FLAC__subframe_add_constant(const FLAC__Subframe_Constant *subframe, uint32_t subframe_bps, uint32_t wasted_bits, FLAC__BitWriter *bw)
386 {
387 FLAC__bool ok;
388
389 ok =
390 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) &&
391 (wasted_bits? FLAC__bitwriter_write_unary_unsigned(bw, wasted_bits-1) : true) &&
392 FLAC__bitwriter_write_raw_int64(bw, subframe->value, subframe_bps)
393 ;
394
395 return ok;
396 }
397
FLAC__subframe_add_fixed(const FLAC__Subframe_Fixed * subframe,uint32_t residual_samples,uint32_t subframe_bps,uint32_t wasted_bits,FLAC__BitWriter * bw)398 FLAC__bool FLAC__subframe_add_fixed(const FLAC__Subframe_Fixed *subframe, uint32_t residual_samples, uint32_t subframe_bps, uint32_t wasted_bits, FLAC__BitWriter *bw)
399 {
400 uint32_t i;
401
402 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))
403 return false;
404 if(wasted_bits)
405 if(!FLAC__bitwriter_write_unary_unsigned(bw, wasted_bits-1))
406 return false;
407
408 for(i = 0; i < subframe->order; i++)
409 if(!FLAC__bitwriter_write_raw_int64(bw, subframe->warmup[i], subframe_bps))
410 return false;
411
412 if(!add_entropy_coding_method_(bw, &subframe->entropy_coding_method))
413 return false;
414 switch(subframe->entropy_coding_method.type) {
415 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
416 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2:
417 if(!add_residual_partitioned_rice_(
418 bw,
419 subframe->residual,
420 residual_samples,
421 subframe->order,
422 subframe->entropy_coding_method.data.partitioned_rice.contents->parameters,
423 subframe->entropy_coding_method.data.partitioned_rice.contents->raw_bits,
424 subframe->entropy_coding_method.data.partitioned_rice.order,
425 /*is_extended=*/subframe->entropy_coding_method.type == FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2
426 ))
427 return false;
428 break;
429 default:
430 FLAC__ASSERT(0);
431 }
432
433 return true;
434 }
435
FLAC__subframe_add_lpc(const FLAC__Subframe_LPC * subframe,uint32_t residual_samples,uint32_t subframe_bps,uint32_t wasted_bits,FLAC__BitWriter * bw)436 FLAC__bool FLAC__subframe_add_lpc(const FLAC__Subframe_LPC *subframe, uint32_t residual_samples, uint32_t subframe_bps, uint32_t wasted_bits, FLAC__BitWriter *bw)
437 {
438 uint32_t i;
439
440 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))
441 return false;
442 if(wasted_bits)
443 if(!FLAC__bitwriter_write_unary_unsigned(bw, wasted_bits-1))
444 return false;
445
446 for(i = 0; i < subframe->order; i++)
447 if(!FLAC__bitwriter_write_raw_int64(bw, subframe->warmup[i], subframe_bps))
448 return false;
449
450 if(!FLAC__bitwriter_write_raw_uint32(bw, subframe->qlp_coeff_precision-1, FLAC__SUBFRAME_LPC_QLP_COEFF_PRECISION_LEN))
451 return false;
452 if(!FLAC__bitwriter_write_raw_int32(bw, subframe->quantization_level, FLAC__SUBFRAME_LPC_QLP_SHIFT_LEN))
453 return false;
454 for(i = 0; i < subframe->order; i++)
455 if(!FLAC__bitwriter_write_raw_int32(bw, subframe->qlp_coeff[i], subframe->qlp_coeff_precision))
456 return false;
457
458 if(!add_entropy_coding_method_(bw, &subframe->entropy_coding_method))
459 return false;
460 switch(subframe->entropy_coding_method.type) {
461 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
462 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2:
463 if(!add_residual_partitioned_rice_(
464 bw,
465 subframe->residual,
466 residual_samples,
467 subframe->order,
468 subframe->entropy_coding_method.data.partitioned_rice.contents->parameters,
469 subframe->entropy_coding_method.data.partitioned_rice.contents->raw_bits,
470 subframe->entropy_coding_method.data.partitioned_rice.order,
471 /*is_extended=*/subframe->entropy_coding_method.type == FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2
472 ))
473 return false;
474 break;
475 default:
476 FLAC__ASSERT(0);
477 }
478
479 return true;
480 }
481
FLAC__subframe_add_verbatim(const FLAC__Subframe_Verbatim * subframe,uint32_t samples,uint32_t subframe_bps,uint32_t wasted_bits,FLAC__BitWriter * bw)482 FLAC__bool FLAC__subframe_add_verbatim(const FLAC__Subframe_Verbatim *subframe, uint32_t samples, uint32_t subframe_bps, uint32_t wasted_bits, FLAC__BitWriter *bw)
483 {
484 uint32_t i;
485
486 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))
487 return false;
488 if(wasted_bits)
489 if(!FLAC__bitwriter_write_unary_unsigned(bw, wasted_bits-1))
490 return false;
491
492 if(subframe->data_type == FLAC__VERBATIM_SUBFRAME_DATA_TYPE_INT32) {
493 const FLAC__int32 *signal = subframe->data.int32;
494
495 FLAC__ASSERT(subframe_bps < 33);
496
497 for(i = 0; i < samples; i++)
498 if(!FLAC__bitwriter_write_raw_int32(bw, signal[i], subframe_bps))
499 return false;
500 }
501 else {
502 const FLAC__int64 *signal = subframe->data.int64;
503
504 FLAC__ASSERT(subframe_bps == 33);
505
506 for(i = 0; i < samples; i++)
507 if(!FLAC__bitwriter_write_raw_int64(bw, (FLAC__int64)signal[i], subframe_bps))
508 return false;
509 }
510
511 return true;
512 }
513
add_entropy_coding_method_(FLAC__BitWriter * bw,const FLAC__EntropyCodingMethod * method)514 FLAC__bool add_entropy_coding_method_(FLAC__BitWriter *bw, const FLAC__EntropyCodingMethod *method)
515 {
516 if(!FLAC__bitwriter_write_raw_uint32(bw, method->type, FLAC__ENTROPY_CODING_METHOD_TYPE_LEN))
517 return false;
518 switch(method->type) {
519 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE:
520 case FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2:
521 if(!FLAC__bitwriter_write_raw_uint32(bw, method->data.partitioned_rice.order, FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ORDER_LEN))
522 return false;
523 break;
524 default:
525 FLAC__ASSERT(0);
526 }
527 return true;
528 }
529
add_residual_partitioned_rice_(FLAC__BitWriter * bw,const FLAC__int32 residual[],const uint32_t residual_samples,const uint32_t predictor_order,const uint32_t rice_parameters[],const uint32_t raw_bits[],const uint32_t partition_order,const FLAC__bool is_extended)530 FLAC__bool add_residual_partitioned_rice_(FLAC__BitWriter *bw, const FLAC__int32 residual[], const uint32_t residual_samples, const uint32_t predictor_order, const uint32_t rice_parameters[], const uint32_t raw_bits[], const uint32_t partition_order, const FLAC__bool is_extended)
531 {
532 const uint32_t plen = is_extended? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_PARAMETER_LEN : FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_PARAMETER_LEN;
533 const uint32_t pesc = is_extended? FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE2_ESCAPE_PARAMETER : FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_ESCAPE_PARAMETER;
534
535 if(partition_order == 0) {
536 uint32_t i;
537
538 if(raw_bits[0] == 0) {
539 if(!FLAC__bitwriter_write_raw_uint32(bw, rice_parameters[0], plen))
540 return false;
541 if(!FLAC__bitwriter_write_rice_signed_block(bw, residual, residual_samples, rice_parameters[0]))
542 return false;
543 }
544 else {
545 FLAC__ASSERT(rice_parameters[0] == 0);
546 if(!FLAC__bitwriter_write_raw_uint32(bw, pesc, plen))
547 return false;
548 if(!FLAC__bitwriter_write_raw_uint32(bw, raw_bits[0], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN))
549 return false;
550 for(i = 0; i < residual_samples; i++) {
551 if(!FLAC__bitwriter_write_raw_int32(bw, residual[i], raw_bits[0]))
552 return false;
553 }
554 }
555 return true;
556 }
557 else {
558 uint32_t i, j, k = 0, k_last = 0;
559 uint32_t partition_samples;
560 const uint32_t default_partition_samples = (residual_samples+predictor_order) >> partition_order;
561 for(i = 0; i < (1u<<partition_order); i++) {
562 partition_samples = default_partition_samples;
563 if(i == 0)
564 partition_samples -= predictor_order;
565 k += partition_samples;
566 if(raw_bits[i] == 0) {
567 if(!FLAC__bitwriter_write_raw_uint32(bw, rice_parameters[i], plen))
568 return false;
569 if(!FLAC__bitwriter_write_rice_signed_block(bw, residual+k_last, k-k_last, rice_parameters[i]))
570 return false;
571 }
572 else {
573 if(!FLAC__bitwriter_write_raw_uint32(bw, pesc, plen))
574 return false;
575 if(!FLAC__bitwriter_write_raw_uint32(bw, raw_bits[i], FLAC__ENTROPY_CODING_METHOD_PARTITIONED_RICE_RAW_LEN))
576 return false;
577 for(j = k_last; j < k; j++) {
578 if(!FLAC__bitwriter_write_raw_int32(bw, residual[j], raw_bits[i]))
579 return false;
580 }
581 }
582 k_last = k;
583 }
584 return true;
585 }
586 }
587