FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/vorbisenc.c
Date: 2024-04-12 08:31:17
Exec Total Coverage
Lines: 676 756 89.4%
Functions: 23 23 100.0%
Branches: 337 444 75.9%

Line Branch Exec Source
1 /*
2 * copyright (c) 2006 Oded Shimon <ods15@ods15.dyndns.org>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 /**
22 * @file
23 * Native Vorbis encoder.
24 * @author Oded Shimon <ods15@ods15.dyndns.org>
25 */
26
27 #include <float.h>
28 #include "libavutil/float_dsp.h"
29 #include "libavutil/mem.h"
30 #include "libavutil/tx.h"
31
32 #include "avcodec.h"
33 #include "codec_internal.h"
34 #include "encode.h"
35 #include "mathops.h"
36 #include "vorbis.h"
37 #include "vorbis_data.h"
38 #include "vorbis_enc_data.h"
39
40 #include "audio_frame_queue.h"
41 #include "libavfilter/bufferqueue.h"
42
43 #define BITSTREAM_WRITER_LE
44 #include "put_bits.h"
45
46 #undef NDEBUG
47 #include <assert.h>
48
49 typedef struct vorbis_enc_codebook {
50 int nentries;
51 uint8_t *lens;
52 uint32_t *codewords;
53 int ndimensions;
54 float min;
55 float delta;
56 int seq_p;
57 int lookup;
58 int *quantlist;
59 float *dimensions;
60 float *pow2;
61 } vorbis_enc_codebook;
62
63 typedef struct vorbis_enc_floor_class {
64 int dim;
65 int subclass;
66 int masterbook;
67 int *books;
68 } vorbis_enc_floor_class;
69
70 typedef struct vorbis_enc_floor {
71 int partitions;
72 int *partition_to_class;
73 int nclasses;
74 vorbis_enc_floor_class *classes;
75 int multiplier;
76 int rangebits;
77 int values;
78 vorbis_floor1_entry *list;
79 } vorbis_enc_floor;
80
81 typedef struct vorbis_enc_residue {
82 int type;
83 int begin;
84 int end;
85 int partition_size;
86 int classifications;
87 int classbook;
88 int8_t (*books)[8];
89 float (*maxes)[2];
90 } vorbis_enc_residue;
91
92 typedef struct vorbis_enc_mapping {
93 int submaps;
94 int *mux;
95 int *floor;
96 int *residue;
97 int coupling_steps;
98 int *magnitude;
99 int *angle;
100 } vorbis_enc_mapping;
101
102 typedef struct vorbis_enc_mode {
103 int blockflag;
104 int mapping;
105 } vorbis_enc_mode;
106
107 typedef struct vorbis_enc_context {
108 int channels;
109 int sample_rate;
110 int log2_blocksize[2];
111 AVTXContext *mdct[2];
112 av_tx_fn mdct_fn[2];
113 const float *win[2];
114 int have_saved;
115 float *saved;
116 float *samples;
117 float *floor; // also used for tmp values for mdct
118 float *coeffs; // also used for residue after floor
119 float *scratch; // used for tmp values for psy model
120 float quality;
121
122 AudioFrameQueue afq;
123 struct FFBufQueue bufqueue;
124
125 int ncodebooks;
126 vorbis_enc_codebook *codebooks;
127
128 int nfloors;
129 vorbis_enc_floor *floors;
130
131 int nresidues;
132 vorbis_enc_residue *residues;
133
134 int nmappings;
135 vorbis_enc_mapping *mappings;
136
137 int nmodes;
138 vorbis_enc_mode *modes;
139
140 int64_t next_pts;
141
142 AVFloatDSPContext *fdsp;
143 } vorbis_enc_context;
144
145 #define MAX_CHANNELS 2
146 #define MAX_CODEBOOK_DIM 8
147
148 #define MAX_FLOOR_CLASS_DIM 4
149 #define NUM_FLOOR_PARTITIONS 8
150 #define MAX_FLOOR_VALUES (MAX_FLOOR_CLASS_DIM*NUM_FLOOR_PARTITIONS+2)
151
152 #define RESIDUE_SIZE 1600
153 #define RESIDUE_PART_SIZE 32
154 #define NUM_RESIDUE_PARTITIONS (RESIDUE_SIZE/RESIDUE_PART_SIZE)
155
156 399604 static inline int put_codeword(PutBitContext *pb, vorbis_enc_codebook *cb,
157 int entry)
158 {
159 av_assert2(entry >= 0);
160 av_assert2(entry < cb->nentries);
161 av_assert2(cb->lens[entry]);
162
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399604 if (put_bits_left(pb) < cb->lens[entry])
163 return AVERROR(EINVAL);
164 399604 put_bits(pb, cb->lens[entry], cb->codewords[entry]);
165 399604 return 0;
166 }
167
168 39 static int cb_lookup_vals(int lookup, int dimensions, int entries)
169 {
170
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39 if (lookup == 1)
171 39 return ff_vorbis_nth_root(entries, dimensions);
172 else if (lookup == 2)
173 return dimensions *entries;
174 return 0;
175 }
176
177 29 static int ready_codebook(vorbis_enc_codebook *cb)
178 {
179 int i;
180
181 29 ff_vorbis_len2vlc(cb->lens, cb->codewords, cb->nentries);
182
183
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29 if (!cb->lookup) {
184 16 cb->pow2 = cb->dimensions = NULL;
185 } else {
186 13 int vals = cb_lookup_vals(cb->lookup, cb->ndimensions, cb->nentries);
187 13 cb->dimensions = av_malloc_array(cb->nentries, sizeof(float) * cb->ndimensions);
188 13 cb->pow2 = av_calloc(cb->nentries, sizeof(*cb->pow2));
189
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13 if (!cb->dimensions || !cb->pow2)
190 return AVERROR(ENOMEM);
191
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9354 for (i = 0; i < cb->nentries; i++) {
192 9341 float last = 0;
193 int j;
194 9341 int div = 1;
195
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70051 for (j = 0; j < cb->ndimensions; j++) {
196 int off;
197
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60710 if (cb->lookup == 1)
198 60710 off = (i / div) % vals; // lookup type 1
199 else
200 off = i * cb->ndimensions + j; // lookup type 2
201
202 60710 cb->dimensions[i * cb->ndimensions + j] = last + cb->min + cb->quantlist[off] * cb->delta;
203
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60710 if (cb->seq_p)
204 last = cb->dimensions[i * cb->ndimensions + j];
205 60710 cb->pow2[i] += cb->dimensions[i * cb->ndimensions + j] * cb->dimensions[i * cb->ndimensions + j];
206 60710 div *= vals;
207 }
208 9341 cb->pow2[i] /= 2.0;
209 }
210 }
211 29 return 0;
212 }
213
214 1 static int ready_residue(vorbis_enc_residue *rc, vorbis_enc_context *venc)
215 {
216 int i;
217
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1 av_assert0(rc->type == 2);
218 1 rc->maxes = av_calloc(rc->classifications, sizeof(*rc->maxes));
219
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1 if (!rc->maxes)
220 return AVERROR(ENOMEM);
221
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11 for (i = 0; i < rc->classifications; i++) {
222 int j;
223 vorbis_enc_codebook * cb;
224
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30 for (j = 0; j < 8; j++)
225
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29 if (rc->books[i][j] != -1)
226 9 break;
227
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10 if (j == 8) // zero
228 1 continue;
229 9 cb = &venc->codebooks[rc->books[i][j]];
230
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9 assert(cb->ndimensions >= 2);
231
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9 assert(cb->lookup);
232
233
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8690 for (j = 0; j < cb->nentries; j++) {
234 float a;
235
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8681 if (!cb->lens[j])
236 7798 continue;
237 883 a = fabs(cb->dimensions[j * cb->ndimensions]);
238
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883 if (a > rc->maxes[i][0])
239 31 rc->maxes[i][0] = a;
240 883 a = fabs(cb->dimensions[j * cb->ndimensions + 1]);
241
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883 if (a > rc->maxes[i][1])
242 31 rc->maxes[i][1] = a;
243 }
244 }
245 // small bias
246
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11 for (i = 0; i < rc->classifications; i++) {
247 10 rc->maxes[i][0] += 0.8;
248 10 rc->maxes[i][1] += 0.8;
249 }
250 1 return 0;
251 }
252
253 1 static av_cold int dsp_init(AVCodecContext *avctx, vorbis_enc_context *venc)
254 {
255 1 int ret = 0;
256 1 float scale = 1.0f;
257
258 1 venc->fdsp = avpriv_float_dsp_alloc(avctx->flags & AV_CODEC_FLAG_BITEXACT);
259
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1 if (!venc->fdsp)
260 return AVERROR(ENOMEM);
261
262 // init windows
263 1 venc->win[0] = ff_vorbis_vwin[venc->log2_blocksize[0] - 6];
264 1 venc->win[1] = ff_vorbis_vwin[venc->log2_blocksize[1] - 6];
265
266
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1 if ((ret = av_tx_init(&venc->mdct[0], &venc->mdct_fn[0], AV_TX_FLOAT_MDCT,
267 1 0, 1 << (venc->log2_blocksize[0] - 1), &scale, 0)) < 0)
268 return ret;
269
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1 if ((ret = av_tx_init(&venc->mdct[1], &venc->mdct_fn[1], AV_TX_FLOAT_MDCT,
270 1 0, 1 << (venc->log2_blocksize[1] - 1), &scale, 0)) < 0)
271 return ret;
272
273 1 return 0;
274 }
275
276 1 static int create_vorbis_context(vorbis_enc_context *venc,
277 AVCodecContext *avctx)
278 {
279 vorbis_enc_floor *fc;
280 vorbis_enc_residue *rc;
281 vorbis_enc_mapping *mc;
282 const uint8_t *clens, *quant;
283 int i, book, ret;
284
285 1 venc->channels = avctx->ch_layout.nb_channels;
286 1 venc->sample_rate = avctx->sample_rate;
287 1 venc->log2_blocksize[0] = venc->log2_blocksize[1] = 11;
288
289 1 venc->ncodebooks = FF_ARRAY_ELEMS(cvectors);
290 1 venc->codebooks = av_mallocz(sizeof(vorbis_enc_codebook) * venc->ncodebooks);
291
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1 if (!venc->codebooks)
292 return AVERROR(ENOMEM);
293
294 // codebook 0..14 - floor1 book, values 0..255
295 // codebook 15 residue masterbook
296 // codebook 16..29 residue
297 1 clens = codebooks;
298 1 quant = quant_tables;
299
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30 for (book = 0; book < venc->ncodebooks; book++) {
300 29 vorbis_enc_codebook *cb = &venc->codebooks[book];
301 int vals;
302 29 cb->ndimensions = cvectors[book].dim;
303 29 cb->nentries = cvectors[book].real_len;
304 29 cb->min = cvectors[book].min;
305 29 cb->delta = cvectors[book].delta;
306 29 cb->lookup = cvectors[book].lookup;
307 29 cb->seq_p = 0;
308
309 29 cb->lens = av_malloc_array(cb->nentries, sizeof(uint8_t));
310 29 cb->codewords = av_malloc_array(cb->nentries, sizeof(uint32_t));
311
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29 if (!cb->lens || !cb->codewords)
312 return AVERROR(ENOMEM);
313 29 memcpy(cb->lens, clens, cvectors[book].len);
314 29 memset(cb->lens + cvectors[book].len, 0, cb->nentries - cvectors[book].len);
315 29 clens += cvectors[book].len;
316
317
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29 if (cb->lookup) {
318 13 vals = cb_lookup_vals(cb->lookup, cb->ndimensions, cb->nentries);
319 13 cb->quantlist = av_malloc_array(vals, sizeof(int));
320
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13 if (!cb->quantlist)
321 return AVERROR(ENOMEM);
322
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138 for (i = 0; i < vals; i++)
323 125 cb->quantlist[i] = *quant++;
324 } else {
325 16 cb->quantlist = NULL;
326 }
327
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29 if ((ret = ready_codebook(cb)) < 0)
328 return ret;
329 }
330
331 1 venc->nfloors = 1;
332 1 venc->floors = av_mallocz(sizeof(vorbis_enc_floor) * venc->nfloors);
333
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1 if (!venc->floors)
334 return AVERROR(ENOMEM);
335
336 // just 1 floor
337 1 fc = &venc->floors[0];
338 1 fc->partitions = NUM_FLOOR_PARTITIONS;
339 1 fc->partition_to_class = av_malloc(sizeof(int) * fc->partitions);
340
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1 if (!fc->partition_to_class)
341 return AVERROR(ENOMEM);
342 1 fc->nclasses = 0;
343
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9 for (i = 0; i < fc->partitions; i++) {
344 static const int a[] = {0, 1, 2, 2, 3, 3, 4, 4};
345 8 fc->partition_to_class[i] = a[i];
346 8 fc->nclasses = FFMAX(fc->nclasses, fc->partition_to_class[i]);
347 }
348 1 fc->nclasses++;
349 1 fc->classes = av_calloc(fc->nclasses, sizeof(vorbis_enc_floor_class));
350
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1 if (!fc->classes)
351 return AVERROR(ENOMEM);
352
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6 for (i = 0; i < fc->nclasses; i++) {
353 5 vorbis_enc_floor_class * c = &fc->classes[i];
354 int j, books;
355 5 c->dim = floor_classes[i].dim;
356 5 c->subclass = floor_classes[i].subclass;
357 5 c->masterbook = floor_classes[i].masterbook;
358 5 books = (1 << c->subclass);
359 5 c->books = av_malloc_array(books, sizeof(int));
360
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5 if (!c->books)
361 return AVERROR(ENOMEM);
362
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18 for (j = 0; j < books; j++)
363 13 c->books[j] = floor_classes[i].nbooks[j];
364 }
365 1 fc->multiplier = 2;
366 1 fc->rangebits = venc->log2_blocksize[1] - 1;
367
368 1 fc->values = 2;
369
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9 for (i = 0; i < fc->partitions; i++)
370 8 fc->values += fc->classes[fc->partition_to_class[i]].dim;
371
372 1 fc->list = av_malloc_array(fc->values, sizeof(vorbis_floor1_entry));
373
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1 if (!fc->list)
374 return AVERROR(ENOMEM);
375 1 fc->list[0].x = 0;
376 1 fc->list[1].x = 1 << fc->rangebits;
377
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28 for (i = 2; i < fc->values; i++) {
378 static const int a[] = {
379 93, 23,372, 6, 46,186,750, 14, 33, 65,
380 130,260,556, 3, 10, 18, 28, 39, 55, 79,
381 111,158,220,312,464,650,850
382 };
383 27 fc->list[i].x = a[i - 2];
384 }
385
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1 if (ff_vorbis_ready_floor1_list(avctx, fc->list, fc->values))
386 return AVERROR_BUG;
387
388 1 venc->nresidues = 1;
389 1 venc->residues = av_mallocz(sizeof(vorbis_enc_residue) * venc->nresidues);
390
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1 if (!venc->residues)
391 return AVERROR(ENOMEM);
392
393 // single residue
394 1 rc = &venc->residues[0];
395 1 rc->type = 2;
396 1 rc->begin = 0;
397 1 rc->end = 1600;
398 1 rc->partition_size = 32;
399 1 rc->classifications = 10;
400 1 rc->classbook = 15;
401 1 rc->books = av_malloc(sizeof(*rc->books) * rc->classifications);
402
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1 if (!rc->books)
403 return AVERROR(ENOMEM);
404 {
405 static const int8_t a[10][8] = {
406 { -1, -1, -1, -1, -1, -1, -1, -1, },
407 { -1, -1, 16, -1, -1, -1, -1, -1, },
408 { -1, -1, 17, -1, -1, -1, -1, -1, },
409 { -1, -1, 18, -1, -1, -1, -1, -1, },
410 { -1, -1, 19, -1, -1, -1, -1, -1, },
411 { -1, -1, 20, -1, -1, -1, -1, -1, },
412 { -1, -1, 21, -1, -1, -1, -1, -1, },
413 { 22, 23, -1, -1, -1, -1, -1, -1, },
414 { 24, 25, -1, -1, -1, -1, -1, -1, },
415 { 26, 27, 28, -1, -1, -1, -1, -1, },
416 };
417 1 memcpy(rc->books, a, sizeof a);
418 }
419
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1 if ((ret = ready_residue(rc, venc)) < 0)
420 return ret;
421
422 1 venc->nmappings = 1;
423 1 venc->mappings = av_mallocz(sizeof(vorbis_enc_mapping) * venc->nmappings);
424
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1 if (!venc->mappings)
425 return AVERROR(ENOMEM);
426
427 // single mapping
428 1 mc = &venc->mappings[0];
429 1 mc->submaps = 1;
430 1 mc->mux = av_malloc(sizeof(int) * venc->channels);
431
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1 if (!mc->mux)
432 return AVERROR(ENOMEM);
433
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3 for (i = 0; i < venc->channels; i++)
434 2 mc->mux[i] = 0;
435 1 mc->floor = av_malloc(sizeof(int) * mc->submaps);
436 1 mc->residue = av_malloc(sizeof(int) * mc->submaps);
437
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1 if (!mc->floor || !mc->residue)
438 return AVERROR(ENOMEM);
439
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2 for (i = 0; i < mc->submaps; i++) {
440 1 mc->floor[i] = 0;
441 1 mc->residue[i] = 0;
442 }
443 1 mc->coupling_steps = venc->channels == 2 ? 1 : 0;
444 1 mc->magnitude = av_malloc(sizeof(int) * mc->coupling_steps);
445 1 mc->angle = av_malloc(sizeof(int) * mc->coupling_steps);
446
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1 if (!mc->magnitude || !mc->angle)
447 return AVERROR(ENOMEM);
448
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1 if (mc->coupling_steps) {
449 1 mc->magnitude[0] = 0;
450 1 mc->angle[0] = 1;
451 }
452
453 1 venc->nmodes = 2;
454 1 venc->modes = av_malloc(sizeof(vorbis_enc_mode) * venc->nmodes);
455
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1 if (!venc->modes)
456 return AVERROR(ENOMEM);
457
458 // Short block
459 1 venc->modes[0].blockflag = 0;
460 1 venc->modes[0].mapping = 0;
461 // Long block
462 1 venc->modes[1].blockflag = 1;
463 1 venc->modes[1].mapping = 0;
464
465 1 venc->have_saved = 0;
466 1 venc->saved = av_malloc_array(sizeof(float) * venc->channels, (1 << venc->log2_blocksize[1]) / 2);
467 1 venc->samples = av_malloc_array(sizeof(float) * venc->channels, (1 << venc->log2_blocksize[1]));
468 1 venc->floor = av_malloc_array(sizeof(float) * venc->channels, (1 << venc->log2_blocksize[1]) / 2);
469 1 venc->coeffs = av_malloc_array(sizeof(float) * venc->channels, (1 << venc->log2_blocksize[1]) / 2);
470 1 venc->scratch = av_malloc_array(sizeof(float) * venc->channels, (1 << venc->log2_blocksize[1]));
471
472
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1 if (!venc->saved || !venc->samples || !venc->floor || !venc->coeffs || !venc->scratch)
473 return AVERROR(ENOMEM);
474
475
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1 if ((ret = dsp_init(avctx, venc)) < 0)
476 return ret;
477
478 1 return 0;
479 }
480
481 26 static void put_float(PutBitContext *pb, float f)
482 {
483 int exp, mant;
484 26 uint32_t res = 0;
485 26 mant = (int)ldexp(frexp(f, &exp), 20);
486 26 exp += 788 - 20;
487
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26 if (mant < 0) {
488 13 res |= (1U << 31);
489 13 mant = -mant;
490 }
491 26 res |= mant | (exp << 21);
492 26 put_bits32(pb, res);
493 26 }
494
495 29 static void put_codebook_header(PutBitContext *pb, vorbis_enc_codebook *cb)
496 {
497 int i;
498 29 int ordered = 0;
499
500 29 put_bits(pb, 24, 0x564342); //magic
501 29 put_bits(pb, 16, cb->ndimensions);
502 29 put_bits(pb, 24, cb->nentries);
503
504
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161 for (i = 1; i < cb->nentries; i++)
505
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161 if (cb->lens[i] < cb->lens[i-1])
506 29 break;
507
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29 if (i == cb->nentries)
508 ordered = 1;
509
510 29 put_bits(pb, 1, ordered);
511
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29 if (ordered) {
512 int len = cb->lens[0];
513 put_bits(pb, 5, len - 1);
514 i = 0;
515 while (i < cb->nentries) {
516 int j;
517 for (j = 0; j+i < cb->nentries; j++)
518 if (cb->lens[j+i] != len)
519 break;
520 put_bits(pb, ilog(cb->nentries - i), j);
521 i += j;
522 len++;
523 }
524 } else {
525 29 int sparse = 0;
526
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2102 for (i = 0; i < cb->nentries; i++)
527
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2080 if (!cb->lens[i])
528 7 break;
529
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29 if (i != cb->nentries)
530 7 sparse = 1;
531 29 put_bits(pb, 1, sparse);
532
533
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10452 for (i = 0; i < cb->nentries; i++) {
534
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10423 if (sparse)
535 8431 put_bits(pb, 1, !!cb->lens[i]);
536
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10423 if (cb->lens[i])
537 2625 put_bits(pb, 5, cb->lens[i] - 1);
538 }
539 }
540
541 29 put_bits(pb, 4, cb->lookup);
542
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29 if (cb->lookup) {
543 13 int tmp = cb_lookup_vals(cb->lookup, cb->ndimensions, cb->nentries);
544 13 int bits = ilog(cb->quantlist[0]);
545
546
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125 for (i = 1; i < tmp; i++)
547 112 bits = FFMAX(bits, ilog(cb->quantlist[i]));
548
549 13 put_float(pb, cb->min);
550 13 put_float(pb, cb->delta);
551
552 13 put_bits(pb, 4, bits - 1);
553 13 put_bits(pb, 1, cb->seq_p);
554
555
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138 for (i = 0; i < tmp; i++)
556 125 put_bits(pb, bits, cb->quantlist[i]);
557 }
558 29 }
559
560 1 static void put_floor_header(PutBitContext *pb, vorbis_enc_floor *fc)
561 {
562 int i;
563
564 1 put_bits(pb, 16, 1); // type, only floor1 is supported
565
566 1 put_bits(pb, 5, fc->partitions);
567
568
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9 for (i = 0; i < fc->partitions; i++)
569 8 put_bits(pb, 4, fc->partition_to_class[i]);
570
571
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6 for (i = 0; i < fc->nclasses; i++) {
572 int j, books;
573
574 5 put_bits(pb, 3, fc->classes[i].dim - 1);
575 5 put_bits(pb, 2, fc->classes[i].subclass);
576
577
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5 if (fc->classes[i].subclass)
578 4 put_bits(pb, 8, fc->classes[i].masterbook);
579
580 5 books = (1 << fc->classes[i].subclass);
581
582
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18 for (j = 0; j < books; j++)
583 13 put_bits(pb, 8, fc->classes[i].books[j] + 1);
584 }
585
586 1 put_bits(pb, 2, fc->multiplier - 1);
587 1 put_bits(pb, 4, fc->rangebits);
588
589
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28 for (i = 2; i < fc->values; i++)
590 27 put_bits(pb, fc->rangebits, fc->list[i].x);
591 1 }
592
593 1 static void put_residue_header(PutBitContext *pb, vorbis_enc_residue *rc)
594 {
595 int i;
596
597 1 put_bits(pb, 16, rc->type);
598
599 1 put_bits(pb, 24, rc->begin);
600 1 put_bits(pb, 24, rc->end);
601 1 put_bits(pb, 24, rc->partition_size - 1);
602 1 put_bits(pb, 6, rc->classifications - 1);
603 1 put_bits(pb, 8, rc->classbook);
604
605
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11 for (i = 0; i < rc->classifications; i++) {
606 10 int j, tmp = 0;
607
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90 for (j = 0; j < 8; j++)
608 80 tmp |= (rc->books[i][j] != -1) << j;
609
610 10 put_bits(pb, 3, tmp & 7);
611 10 put_bits(pb, 1, tmp > 7);
612
613
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10 if (tmp > 7)
614 put_bits(pb, 5, tmp >> 3);
615 }
616
617
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11 for (i = 0; i < rc->classifications; i++) {
618 int j;
619
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90 for (j = 0; j < 8; j++)
620
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80 if (rc->books[i][j] != -1)
621 13 put_bits(pb, 8, rc->books[i][j]);
622 }
623 1 }
624
625 1 static int put_main_header(vorbis_enc_context *venc, uint8_t **out)
626 {
627 int i;
628 PutBitContext pb;
629 int len, hlens[3];
630 1 int buffer_len = 50000;
631 1 uint8_t *buffer = av_mallocz(buffer_len), *p = buffer;
632
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1 if (!buffer)
633 return AVERROR(ENOMEM);
634
635 // identification header
636 1 init_put_bits(&pb, p, buffer_len);
637 1 put_bits(&pb, 8, 1); //magic
638
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7 for (i = 0; "vorbis"[i]; i++)
639 6 put_bits(&pb, 8, "vorbis"[i]);
640 1 put_bits32(&pb, 0); // version
641 1 put_bits(&pb, 8, venc->channels);
642 1 put_bits32(&pb, venc->sample_rate);
643 1 put_bits32(&pb, 0); // bitrate
644 1 put_bits32(&pb, 0); // bitrate
645 1 put_bits32(&pb, 0); // bitrate
646 1 put_bits(&pb, 4, venc->log2_blocksize[0]);
647 1 put_bits(&pb, 4, venc->log2_blocksize[1]);
648 1 put_bits(&pb, 1, 1); // framing
649
650 1 flush_put_bits(&pb);
651 1 hlens[0] = put_bytes_output(&pb);
652 1 buffer_len -= hlens[0];
653 1 p += hlens[0];
654
655 // comment header
656 1 init_put_bits(&pb, p, buffer_len);
657 1 put_bits(&pb, 8, 3); //magic
658
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7 for (i = 0; "vorbis"[i]; i++)
659 6 put_bits(&pb, 8, "vorbis"[i]);
660 1 put_bits32(&pb, 0); // vendor length TODO
661 1 put_bits32(&pb, 0); // amount of comments
662 1 put_bits(&pb, 1, 1); // framing
663
664 1 flush_put_bits(&pb);
665 1 hlens[1] = put_bytes_output(&pb);
666 1 buffer_len -= hlens[1];
667 1 p += hlens[1];
668
669 // setup header
670 1 init_put_bits(&pb, p, buffer_len);
671 1 put_bits(&pb, 8, 5); //magic
672
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7 for (i = 0; "vorbis"[i]; i++)
673 6 put_bits(&pb, 8, "vorbis"[i]);
674
675 // codebooks
676 1 put_bits(&pb, 8, venc->ncodebooks - 1);
677
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30 for (i = 0; i < venc->ncodebooks; i++)
678 29 put_codebook_header(&pb, &venc->codebooks[i]);
679
680 // time domain, reserved, zero
681 1 put_bits(&pb, 6, 0);
682 1 put_bits(&pb, 16, 0);
683
684 // floors
685 1 put_bits(&pb, 6, venc->nfloors - 1);
686
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2 for (i = 0; i < venc->nfloors; i++)
687 1 put_floor_header(&pb, &venc->floors[i]);
688
689 // residues
690 1 put_bits(&pb, 6, venc->nresidues - 1);
691
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2 for (i = 0; i < venc->nresidues; i++)
692 1 put_residue_header(&pb, &venc->residues[i]);
693
694 // mappings
695 1 put_bits(&pb, 6, venc->nmappings - 1);
696
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2 for (i = 0; i < venc->nmappings; i++) {
697 1 vorbis_enc_mapping *mc = &venc->mappings[i];
698 int j;
699 1 put_bits(&pb, 16, 0); // mapping type
700
701 1 put_bits(&pb, 1, mc->submaps > 1);
702
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1 if (mc->submaps > 1)
703 put_bits(&pb, 4, mc->submaps - 1);
704
705 1 put_bits(&pb, 1, !!mc->coupling_steps);
706
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1 if (mc->coupling_steps) {
707 1 put_bits(&pb, 8, mc->coupling_steps - 1);
708
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2 for (j = 0; j < mc->coupling_steps; j++) {
709 1 put_bits(&pb, ilog(venc->channels - 1), mc->magnitude[j]);
710 1 put_bits(&pb, ilog(venc->channels - 1), mc->angle[j]);
711 }
712 }
713
714 1 put_bits(&pb, 2, 0); // reserved
715
716
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1 if (mc->submaps > 1)
717 for (j = 0; j < venc->channels; j++)
718 put_bits(&pb, 4, mc->mux[j]);
719
720
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2 for (j = 0; j < mc->submaps; j++) {
721 1 put_bits(&pb, 8, 0); // reserved time configuration
722 1 put_bits(&pb, 8, mc->floor[j]);
723 1 put_bits(&pb, 8, mc->residue[j]);
724 }
725 }
726
727 // modes
728 1 put_bits(&pb, 6, venc->nmodes - 1);
729
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3 for (i = 0; i < venc->nmodes; i++) {
730 2 put_bits(&pb, 1, venc->modes[i].blockflag);
731 2 put_bits(&pb, 16, 0); // reserved window type
732 2 put_bits(&pb, 16, 0); // reserved transform type
733 2 put_bits(&pb, 8, venc->modes[i].mapping);
734 }
735
736 1 put_bits(&pb, 1, 1); // framing
737
738 1 flush_put_bits(&pb);
739 1 hlens[2] = put_bytes_output(&pb);
740
741 1 len = hlens[0] + hlens[1] + hlens[2];
742 1 p = *out = av_mallocz(64 + len + len/255);
743
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1 if (!p)
744 return AVERROR(ENOMEM);
745
746 1 *p++ = 2;
747 1 p += av_xiphlacing(p, hlens[0]);
748 1 p += av_xiphlacing(p, hlens[1]);
749 1 buffer_len = 0;
750
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4 for (i = 0; i < 3; i++) {
751 3 memcpy(p, buffer + buffer_len, hlens[i]);
752 3 p += hlens[i];
753 3 buffer_len += hlens[i];
754 }
755
756 1 av_freep(&buffer);
757 1 return p - *out;
758 }
759
760 23838 static float get_floor_average(vorbis_enc_floor * fc, float *coeffs, int i)
761 {
762
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23838 int begin = fc->list[fc->list[FFMAX(i-1, 0)].sort].x;
763
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23838 int end = fc->list[fc->list[FFMIN(i+1, fc->values - 1)].sort].x;
764 int j;
765 23838 float average = 0;
766
767
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1707294 for (j = begin; j < end; j++)
768 1683456 average += fabs(coeffs[j]);
769 23838 return average / (end - begin);
770 }
771
772 822 static void floor_fit(vorbis_enc_context *venc, vorbis_enc_floor *fc,
773 float *coeffs, uint16_t *posts, int samples)
774 {
775 822 int range = 255 / fc->multiplier + 1;
776 int i;
777 822 float tot_average = 0.0;
778 float averages[MAX_FLOOR_VALUES];
779
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24660 for (i = 0; i < fc->values; i++) {
780 23838 averages[i] = get_floor_average(fc, coeffs, i);
781 23838 tot_average += averages[i];
782 }
783 822 tot_average /= fc->values;
784 822 tot_average /= venc->quality;
785
786
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24660 for (i = 0; i < fc->values; i++) {
787 23838 int position = fc->list[fc->list[i].sort].x;
788 23838 float average = averages[i];
789 int j;
790
791 23838 average = sqrt(tot_average * average) * pow(1.25f, position*0.005f); // MAGIC!
792
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1577852 for (j = 0; j < range - 1; j++)
793
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1577852 if (ff_vorbis_floor1_inverse_db_table[j * fc->multiplier] > average)
794 23838 break;
795 23838 posts[fc->list[i].sort] = j;
796 }
797 822 }
798
799 22194 static int render_point(int x0, int y0, int x1, int y1, int x)
800 {
801 22194 return y0 + (x - x0) * (y1 - y0) / (x1 - x0);
802 }
803
804 822 static int floor_encode(vorbis_enc_context *venc, vorbis_enc_floor *fc,
805 PutBitContext *pb, uint16_t *posts,
806 float *floor, int samples)
807 {
808 822 int range = 255 / fc->multiplier + 1;
809 int coded[MAX_FLOOR_VALUES]; // first 2 values are unused
810 int i, counter;
811
812
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822 if (put_bits_left(pb) < 1 + 2 * ilog(range - 1))
813 return AVERROR(EINVAL);
814 822 put_bits(pb, 1, 1); // non zero
815 822 put_bits(pb, ilog(range - 1), posts[0]);
816 822 put_bits(pb, ilog(range - 1), posts[1]);
817 822 coded[0] = coded[1] = 1;
818
819
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23016 for (i = 2; i < fc->values; i++) {
820 22194 int predicted = render_point(fc->list[fc->list[i].low].x,
821 22194 posts[fc->list[i].low],
822 22194 fc->list[fc->list[i].high].x,
823 22194 posts[fc->list[i].high],
824 22194 fc->list[i].x);
825 22194 int highroom = range - predicted;
826 22194 int lowroom = predicted;
827 22194 int room = FFMIN(highroom, lowroom);
828
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22194 if (predicted == posts[i]) {
829 5981 coded[i] = 0; // must be used later as flag!
830 5981 continue;
831 } else {
832
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16213 if (!coded[fc->list[i].low ])
833 488 coded[fc->list[i].low ] = -1;
834
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16213 if (!coded[fc->list[i].high])
835 1012 coded[fc->list[i].high] = -1;
836 }
837
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16213 if (posts[i] > predicted) {
838
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6159 if (posts[i] - predicted > room)
839 coded[i] = posts[i] - predicted + lowroom;
840 else
841 6159 coded[i] = (posts[i] - predicted) << 1;
842 } else {
843
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10054 if (predicted - posts[i] > room)
844 coded[i] = predicted - posts[i] + highroom - 1;
845 else
846 10054 coded[i] = ((predicted - posts[i]) << 1) - 1;
847 }
848 }
849
850 822 counter = 2;
851
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7398 for (i = 0; i < fc->partitions; i++) {
852 6576 vorbis_enc_floor_class * c = &fc->classes[fc->partition_to_class[i]];
853 6576 int k, cval = 0, csub = 1<<c->subclass;
854
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6576 if (c->subclass) {
855 5754 vorbis_enc_codebook * book = &venc->codebooks[c->masterbook];
856 5754 int cshift = 0;
857
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25482 for (k = 0; k < c->dim; k++) {
858 int l;
859
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27010 for (l = 0; l < csub; l++) {
860 27010 int maxval = 1;
861
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27010 if (c->books[l] != -1)
862 15502 maxval = venc->codebooks[c->books[l]].nentries;
863 // coded could be -1, but this still works, cause that is 0
864
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27010 if (coded[counter + k] < maxval)
865 19728 break;
866 }
867
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19728 assert(l != csub);
868 19728 cval |= l << cshift;
869 19728 cshift += c->subclass;
870 }
871
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5754 if (put_codeword(pb, book, cval))
872 return AVERROR(EINVAL);
873 }
874
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28770 for (k = 0; k < c->dim; k++) {
875 22194 int book = c->books[cval & (csub-1)];
876 22194 int entry = coded[counter++];
877 22194 cval >>= c->subclass;
878
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22194 if (book == -1)
879 4227 continue;
880
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17967 if (entry == -1)
881 1500 entry = 0;
882
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17967 if (put_codeword(pb, &venc->codebooks[book], entry))
883 return AVERROR(EINVAL);
884 }
885 }
886
887 822 ff_vorbis_floor1_render_list(fc->list, fc->values, posts, coded,
888 fc->multiplier, floor, samples);
889
890 822 return 0;
891 }
892
893 365608 static float *put_vector(vorbis_enc_codebook *book, PutBitContext *pb,
894 float *num)
895 {
896 365608 int i, entry = -1;
897 365608 float distance = FLT_MAX;
898
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365608 assert(book->dimensions);
899
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123585104 for (i = 0; i < book->nentries; i++) {
900 123219496 float * vec = book->dimensions + i * book->ndimensions, d = book->pow2[i];
901 int j;
902
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123219496 if (!book->lens[i])
903 78436032 continue;
904
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143288296 for (j = 0; j < book->ndimensions; j++)
905 98504832 d -= vec[j] * num[j];
906
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44783464 if (distance > d) {
907 1516706 entry = i;
908 1516706 distance = d;
909 }
910 }
911
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365608 if (put_codeword(pb, book, entry))
912 return NULL;
913 365608 return &book->dimensions[entry * book->ndimensions];
914 }
915
916 411 static int residue_encode(vorbis_enc_context *venc, vorbis_enc_residue *rc,
917 PutBitContext *pb, float *coeffs, int samples,
918 int real_ch)
919 {
920 int pass, i, j, p, k;
921 411 int psize = rc->partition_size;
922 411 int partitions = (rc->end - rc->begin) / psize;
923
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411 int channels = (rc->type == 2) ? 1 : real_ch;
924 int classes[MAX_CHANNELS][NUM_RESIDUE_PARTITIONS];
925 411 int classwords = venc->codebooks[rc->classbook].ndimensions;
926
927
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411 av_assert0(rc->type == 2);
928
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411 av_assert0(real_ch == 2);
929
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20961 for (p = 0; p < partitions; p++) {
930 20550 float max1 = 0.0, max2 = 0.0;
931 20550 int s = rc->begin + p * psize;
932
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349350 for (k = s; k < s + psize; k += 2) {
933
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328800 max1 = FFMAX(max1, fabs(coeffs[ k / real_ch]));
934
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328800 max2 = FFMAX(max2, fabs(coeffs[samples + k / real_ch]));
935 }
936
937
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121995 for (i = 0; i < rc->classifications - 1; i++)
938
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120752 if (max1 < rc->maxes[i][0] && max2 < rc->maxes[i][1])
939 19307 break;
940 20550 classes[0][p] = i;
941 }
942
943
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3699 for (pass = 0; pass < 8; pass++) {
944 3288 p = 0;
945
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85488 while (p < partitions) {
946
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82200 if (pass == 0)
947
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20550 for (j = 0; j < channels; j++) {
948 10275 vorbis_enc_codebook * book = &venc->codebooks[rc->classbook];
949 10275 int entry = 0;
950
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30825 for (i = 0; i < classwords; i++) {
951 20550 entry *= rc->classifications;
952 20550 entry += classes[j][p + i];
953 }
954
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10275 if (put_codeword(pb, book, entry))
955 return AVERROR(EINVAL);
956 }
957
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246600 for (i = 0; i < classwords && p < partitions; i++, p++) {
958
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328800 for (j = 0; j < channels; j++) {
959 164400 int nbook = rc->books[classes[j][p]][pass];
960 164400 vorbis_enc_codebook * book = &venc->codebooks[nbook];
961 164400 float *buf = coeffs + samples*j + rc->begin + p*psize;
962
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164400 if (nbook == -1)
963 137852 continue;
964
965
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26548 assert(rc->type == 0 || rc->type == 2);
966
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26548 assert(!(psize % book->ndimensions));
967
968
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26548 if (rc->type == 0) {
969 for (k = 0; k < psize; k += book->ndimensions) {
970 int l;
971 float *a = put_vector(book, pb, &buf[k]);
972 if (!a)
973 return AVERROR(EINVAL);
974 for (l = 0; l < book->ndimensions; l++)
975 buf[k + l] -= a[l];
976 }
977 } else {
978 26548 int s = rc->begin + p * psize, a1, b1;
979 26548 a1 = (s % real_ch) * samples;
980 26548 b1 = s / real_ch;
981 26548 s = real_ch * samples;
982
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392156 for (k = 0; k < psize; k += book->ndimensions) {
983 365608 int dim, a2 = a1, b2 = b1;
984 365608 float vec[MAX_CODEBOOK_DIM], *pv = vec;
985
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1215144 for (dim = book->ndimensions; dim--; ) {
986 849536 *pv++ = coeffs[a2 + b2];
987
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✓ Branch 1 taken 424768 times.
849536 if ((a2 += samples) == s) {
988 424768 a2 = 0;
989 424768 b2++;
990 }
991 }
992 365608 pv = put_vector(book, pb, vec);
993
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365608 if (!pv)
994 return AVERROR(EINVAL);
995
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✓ Branch 1 taken 365608 times.
1215144 for (dim = book->ndimensions; dim--; ) {
996 849536 coeffs[a1 + b1] -= *pv++;
997
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✓ Branch 1 taken 424768 times.
849536 if ((a1 += samples) == s) {
998 424768 a1 = 0;
999 424768 b1++;
1000 }
1001 }
1002 }
1003 }
1004 }
1005 }
1006 }
1007 }
1008 411 return 0;
1009 }
1010
1011 411 static int apply_window_and_mdct(vorbis_enc_context *venc)
1012 {
1013 int channel;
1014 411 const float * win = venc->win[1];
1015 411 int window_len = 1 << (venc->log2_blocksize[1] - 1);
1016 411 float n = (float)(1 << venc->log2_blocksize[1]) / 4.0;
1017 411 AVFloatDSPContext *fdsp = venc->fdsp;
1018
1019
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1233 for (channel = 0; channel < venc->channels; channel++) {
1020 822 float *offset = venc->samples + channel * window_len * 2;
1021
1022 822 fdsp->vector_fmul(offset, offset, win, window_len);
1023 822 fdsp->vector_fmul_scalar(offset, offset, 1/n, window_len);
1024
1025 822 offset += window_len;
1026
1027 822 fdsp->vector_fmul_reverse(offset, offset, win, window_len);
1028 822 fdsp->vector_fmul_scalar(offset, offset, 1/n, window_len);
1029
1030 822 venc->mdct_fn[1](venc->mdct[1], venc->coeffs + channel * window_len,
1031 822 venc->samples + channel * window_len * 2, sizeof(float));
1032 }
1033 411 return 1;
1034 }
1035
1036 /* Used for padding the last encoded packet */
1037 29 static AVFrame *spawn_empty_frame(AVCodecContext *avctx, int channels)
1038 {
1039 29 AVFrame *f = av_frame_alloc();
1040 int ch;
1041
1042
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29 if (!f)
1043 return NULL;
1044
1045 29 f->format = avctx->sample_fmt;
1046 29 f->nb_samples = avctx->frame_size;
1047 29 f->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
1048 29 f->ch_layout.nb_channels = channels;
1049
1050
1/2
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29 if (av_frame_get_buffer(f, 4)) {
1051 av_frame_free(&f);
1052 return NULL;
1053 }
1054
1055
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87 for (ch = 0; ch < channels; ch++) {
1056 58 size_t bps = av_get_bytes_per_sample(f->format);
1057 58 memset(f->extended_data[ch], 0, bps * f->nb_samples);
1058 }
1059 29 return f;
1060 }
1061
1062 /* Set up audio samples for psy analysis and window/mdct */
1063 411 static void move_audio(vorbis_enc_context *venc, int sf_size)
1064 {
1065 411 AVFrame *cur = NULL;
1066 411 int frame_size = 1 << (venc->log2_blocksize[1] - 1);
1067 411 int subframes = frame_size / sf_size;
1068 int sf, ch;
1069
1070 /* Copy samples from last frame into current frame */
1071
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411 if (venc->have_saved)
1072
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1230 for (ch = 0; ch < venc->channels; ch++)
1073 820 memcpy(venc->samples + 2 * ch * frame_size,
1074 820 venc->saved + ch * frame_size, sizeof(float) * frame_size);
1075 else
1076
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3 for (ch = 0; ch < venc->channels; ch++)
1077 2 memset(venc->samples + 2 * ch * frame_size, 0, sizeof(float) * frame_size);
1078
1079
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6987 for (sf = 0; sf < subframes; sf++) {
1080 6576 cur = ff_bufqueue_get(&venc->bufqueue);
1081
1082
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19728 for (ch = 0; ch < venc->channels; ch++) {
1083 13152 float *offset = venc->samples + 2 * ch * frame_size + frame_size;
1084 13152 float *save = venc->saved + ch * frame_size;
1085 13152 const float *input = (float *) cur->extended_data[ch];
1086 13152 const size_t len = cur->nb_samples * sizeof(float);
1087
1088 13152 memcpy(offset + sf*sf_size, input, len);
1089 13152 memcpy(save + sf*sf_size, input, len); // Move samples for next frame
1090 }
1091 6576 av_frame_free(&cur);
1092 }
1093 411 venc->have_saved = 1;
1094 411 memcpy(venc->scratch, venc->samples, 2 * venc->channels * frame_size);
1095 411 }
1096
1097 6550 static int vorbis_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
1098 const AVFrame *frame, int *got_packet_ptr)
1099 {
1100 6550 vorbis_enc_context *venc = avctx->priv_data;
1101 int i, ret, need_more;
1102 6550 int frame_size = 1 << (venc->log2_blocksize[1] - 1);
1103 vorbis_enc_mode *mode;
1104 vorbis_enc_mapping *mapping;
1105 PutBitContext pb;
1106
1107
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6550 if (frame) {
1108 AVFrame *clone;
1109
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6547 if ((ret = ff_af_queue_add(&venc->afq, frame)) < 0)
1110 return ret;
1111 6547 clone = av_frame_clone(frame);
1112
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6547 if (!clone)
1113 return AVERROR(ENOMEM);
1114 6547 ff_bufqueue_add(avctx, &venc->bufqueue, clone);
1115 } else
1116
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3 if (!venc->afq.remaining_samples)
1117 1 return 0;
1118
1119 6549 need_more = venc->bufqueue.available * avctx->frame_size < frame_size;
1120
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6549 need_more = frame && need_more;
1121
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6549 if (need_more)
1122 6138 return 0;
1123
1124 /* Pad the bufqueue with empty frames for encoding the last packet. */
1125
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411 if (!frame) {
1126
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2 if (venc->bufqueue.available * avctx->frame_size < frame_size) {
1127 2 int frames_needed = (frame_size/avctx->frame_size) - venc->bufqueue.available;
1128 int i;
1129
1130
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31 for (i = 0; i < frames_needed; i++) {
1131 29 AVFrame *empty = spawn_empty_frame(avctx, venc->channels);
1132
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29 if (!empty)
1133 return AVERROR(ENOMEM);
1134
1135 29 ff_bufqueue_add(avctx, &venc->bufqueue, empty);
1136 }
1137 }
1138 }
1139
1140 411 move_audio(venc, avctx->frame_size);
1141
1142
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411 if (!apply_window_and_mdct(venc))
1143 return 0;
1144
1145
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411 if ((ret = ff_alloc_packet(avctx, avpkt, 8192)) < 0)
1146 return ret;
1147
1148 411 init_put_bits(&pb, avpkt->data, avpkt->size);
1149
1150 411 put_bits(&pb, 1, 0); // magic bit
1151
1152 411 put_bits(&pb, ilog(venc->nmodes - 1), 1); // Mode for current frame
1153
1154 411 mode = &venc->modes[1];
1155 411 mapping = &venc->mappings[mode->mapping];
1156
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411 if (mode->blockflag) {
1157 411 put_bits(&pb, 1, 1); // Previous windowflag
1158 411 put_bits(&pb, 1, 1); // Next windowflag
1159 }
1160
1161
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1233 for (i = 0; i < venc->channels; i++) {
1162 822 vorbis_enc_floor *fc = &venc->floors[mapping->floor[mapping->mux[i]]];
1163 uint16_t posts[MAX_FLOOR_VALUES];
1164 822 floor_fit(venc, fc, &venc->coeffs[i * frame_size], posts, frame_size);
1165
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822 if (floor_encode(venc, fc, &pb, posts, &venc->floor[i * frame_size], frame_size)) {
1166 av_log(avctx, AV_LOG_ERROR, "output buffer is too small\n");
1167 return AVERROR(EINVAL);
1168 }
1169 }
1170
1171
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842139 for (i = 0; i < venc->channels * frame_size; i++)
1172 841728 venc->coeffs[i] /= venc->floor[i];
1173
1174
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822 for (i = 0; i < mapping->coupling_steps; i++) {
1175 411 float *mag = venc->coeffs + mapping->magnitude[i] * frame_size;
1176 411 float *ang = venc->coeffs + mapping->angle[i] * frame_size;
1177 int j;
1178
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421275 for (j = 0; j < frame_size; j++) {
1179 420864 float a = ang[j];
1180 420864 ang[j] -= mag[j];
1181
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420864 if (mag[j] > 0)
1182 210263 ang[j] = -ang[j];
1183
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✓ Branch 1 taken 254375 times.
420864 if (ang[j] < 0)
1184 166489 mag[j] = a;
1185 }
1186 }
1187
1188
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411 if (residue_encode(venc, &venc->residues[mapping->residue[mapping->mux[0]]],
1189 &pb, venc->coeffs, frame_size, venc->channels)) {
1190 av_log(avctx, AV_LOG_ERROR, "output buffer is too small\n");
1191 return AVERROR(EINVAL);
1192 }
1193
1194 411 flush_put_bits(&pb);
1195 411 avpkt->size = put_bytes_output(&pb);
1196
1197 411 ff_af_queue_remove(&venc->afq, frame_size, &avpkt->pts, &avpkt->duration);
1198
1199
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411 if (frame_size > avpkt->duration) {
1200 1 uint8_t *side = av_packet_new_side_data(avpkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1201
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1 if (!side)
1202 return AVERROR(ENOMEM);
1203 1 AV_WL32(&side[4], frame_size - avpkt->duration);
1204 }
1205
1206 411 *got_packet_ptr = 1;
1207 411 return 0;
1208 }
1209
1210
1211 1 static av_cold int vorbis_encode_close(AVCodecContext *avctx)
1212 {
1213 1 vorbis_enc_context *venc = avctx->priv_data;
1214 int i;
1215
1216
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1 if (venc->codebooks)
1217
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30 for (i = 0; i < venc->ncodebooks; i++) {
1218 29 av_freep(&venc->codebooks[i].lens);
1219 29 av_freep(&venc->codebooks[i].codewords);
1220 29 av_freep(&venc->codebooks[i].quantlist);
1221 29 av_freep(&venc->codebooks[i].dimensions);
1222 29 av_freep(&venc->codebooks[i].pow2);
1223 }
1224 1 av_freep(&venc->codebooks);
1225
1226
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1 if (venc->floors)
1227
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2 for (i = 0; i < venc->nfloors; i++) {
1228 int j;
1229
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1 if (venc->floors[i].classes)
1230
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6 for (j = 0; j < venc->floors[i].nclasses; j++)
1231 5 av_freep(&venc->floors[i].classes[j].books);
1232 1 av_freep(&venc->floors[i].classes);
1233 1 av_freep(&venc->floors[i].partition_to_class);
1234 1 av_freep(&venc->floors[i].list);
1235 }
1236 1 av_freep(&venc->floors);
1237
1238
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1 if (venc->residues)
1239
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2 for (i = 0; i < venc->nresidues; i++) {
1240 1 av_freep(&venc->residues[i].books);
1241 1 av_freep(&venc->residues[i].maxes);
1242 }
1243 1 av_freep(&venc->residues);
1244
1245
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1 if (venc->mappings)
1246
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2 for (i = 0; i < venc->nmappings; i++) {
1247 1 av_freep(&venc->mappings[i].mux);
1248 1 av_freep(&venc->mappings[i].floor);
1249 1 av_freep(&venc->mappings[i].residue);
1250 1 av_freep(&venc->mappings[i].magnitude);
1251 1 av_freep(&venc->mappings[i].angle);
1252 }
1253 1 av_freep(&venc->mappings);
1254
1255 1 av_freep(&venc->modes);
1256
1257 1 av_freep(&venc->saved);
1258 1 av_freep(&venc->samples);
1259 1 av_freep(&venc->floor);
1260 1 av_freep(&venc->coeffs);
1261 1 av_freep(&venc->scratch);
1262 1 av_freep(&venc->fdsp);
1263
1264 1 av_tx_uninit(&venc->mdct[0]);
1265 1 av_tx_uninit(&venc->mdct[1]);
1266 1 ff_af_queue_close(&venc->afq);
1267 1 ff_bufqueue_discard_all(&venc->bufqueue);
1268
1269 1 return 0 ;
1270 }
1271
1272 1 static av_cold int vorbis_encode_init(AVCodecContext *avctx)
1273 {
1274 1 vorbis_enc_context *venc = avctx->priv_data;
1275 int ret;
1276
1277
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1 if (avctx->ch_layout.nb_channels != 2) {
1278 av_log(avctx, AV_LOG_ERROR, "Current FFmpeg Vorbis encoder only supports 2 channels.\n");
1279 return -1;
1280 }
1281
1282
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1 if ((ret = create_vorbis_context(venc, avctx)) < 0)
1283 return ret;
1284
1285 1 avctx->bit_rate = 0;
1286
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1 if (avctx->flags & AV_CODEC_FLAG_QSCALE)
1287 venc->quality = avctx->global_quality / (float)FF_QP2LAMBDA;
1288 else
1289 1 venc->quality = 8;
1290 1 venc->quality *= venc->quality;
1291
1292
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1 if ((ret = put_main_header(venc, (uint8_t**)&avctx->extradata)) < 0)
1293 return ret;
1294 1 avctx->extradata_size = ret;
1295
1296 1 avctx->frame_size = 64;
1297 1 avctx->initial_padding = 1 << (venc->log2_blocksize[1] - 1);
1298
1299 1 ff_af_queue_init(avctx, &venc->afq);
1300
1301 1 return 0;
1302 }
1303
1304 const FFCodec ff_vorbis_encoder = {
1305 .p.name = "vorbis",
1306 CODEC_LONG_NAME("Vorbis"),
1307 .p.type = AVMEDIA_TYPE_AUDIO,
1308 .p.id = AV_CODEC_ID_VORBIS,
1309 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
1310 AV_CODEC_CAP_EXPERIMENTAL,
1311 .priv_data_size = sizeof(vorbis_enc_context),
1312 .init = vorbis_encode_init,
1313 FF_CODEC_ENCODE_CB(vorbis_encode_frame),
1314 .close = vorbis_encode_close,
1315 .p.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_FLTP,
1316 AV_SAMPLE_FMT_NONE },
1317 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
1318 };
1319