2 * Copyright (c) 2001-2003 The FFmpeg project
4 * first version by Francois Revol (revol@free.fr)
5 * fringe ADPCM codecs (e.g., DK3, DK4, Westwood)
6 * by Mike Melanson (melanson@pcisys.net)
7 * CD-ROM XA ADPCM codec by BERO
8 * EA ADPCM decoder by Robin Kay (komadori@myrealbox.com)
9 * EA ADPCM R1/R2/R3 decoder by Peter Ross (pross@xvid.org)
10 * EA IMA EACS decoder by Peter Ross (pross@xvid.org)
11 * EA IMA SEAD decoder by Peter Ross (pross@xvid.org)
12 * EA ADPCM XAS decoder by Peter Ross (pross@xvid.org)
13 * MAXIS EA ADPCM decoder by Robert Marston (rmarston@gmail.com)
14 * THP ADPCM decoder by Marco Gerards (mgerards@xs4all.nl)
15 * Argonaut Games ADPCM decoder by Zane van Iperen (zane@zanevaniperen.com)
16 * Simon & Schuster Interactive ADPCM decoder by Zane van Iperen (zane@zanevaniperen.com)
17 * Ubisoft ADPCM decoder by Zane van Iperen (zane@zanevaniperen.com)
18 * High Voltage Software ALP decoder by Zane van Iperen (zane@zanevaniperen.com)
20 * This file is part of FFmpeg.
22 * FFmpeg is free software; you can redistribute it and/or
23 * modify it under the terms of the GNU Lesser General Public
24 * License as published by the Free Software Foundation; either
25 * version 2.1 of the License, or (at your option) any later version.
27 * FFmpeg is distributed in the hope that it will be useful,
28 * but WITHOUT ANY WARRANTY; without even the implied warranty of
29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
30 * Lesser General Public License for more details.
32 * You should have received a copy of the GNU Lesser General Public
33 * License along with FFmpeg; if not, write to the Free Software
34 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
38 #include "bytestream.h"
40 #include "adpcm_data.h"
46 * Features and limitations:
48 * Reference documents:
49 * http://wiki.multimedia.cx/index.php?title=Category:ADPCM_Audio_Codecs
50 * http://www.pcisys.net/~melanson/codecs/simpleaudio.html [dead]
51 * http://www.geocities.com/SiliconValley/8682/aud3.txt [dead]
52 * http://openquicktime.sourceforge.net/
53 * XAnim sources (xa_codec.c) http://xanim.polter.net/
54 * http://www.cs.ucla.edu/~leec/mediabench/applications.html [dead]
55 * SoX source code http://sox.sourceforge.net/
58 * http://ku-www.ss.titech.ac.jp/~yatsushi/xaadpcm.html [dead]
59 * vagpack & depack http://homepages.compuserve.de/bITmASTER32/psx-index.html [dead]
60 * readstr http://www.geocities.co.jp/Playtown/2004/
63 /* These are for CD-ROM XA ADPCM */
64 static const int8_t xa_adpcm_table[5][2] = {
72 static const int16_t ea_adpcm_table[] = {
80 // padded to zero where table size is less then 16
81 static const int8_t swf_index_tables[4][16] = {
83 /*3*/ { -1, -1, 2, 4 },
84 /*4*/ { -1, -1, -1, -1, 2, 4, 6, 8 },
85 /*5*/ { -1, -1, -1, -1, -1, -1, -1, -1, 1, 2, 4, 6, 8, 10, 13, 16 }
88 static const int8_t zork_index_table[8] = {
89 -1, -1, -1, 1, 4, 7, 10, 12,
92 static const int8_t mtf_index_table[16] = {
93 8, 6, 4, 2, -1, -1, -1, -1,
94 -1, -1, -1, -1, 2, 4, 6, 8,
99 typedef struct ADPCMDecodeContext {
100 ADPCMChannelStatus status[14];
101 int vqa_version; /**< VQA version. Used for ADPCM_IMA_WS */
103 } ADPCMDecodeContext;
105 static av_cold int adpcm_decode_init(AVCodecContext * avctx)
107 ADPCMDecodeContext *c = avctx->priv_data;
108 unsigned int min_channels = 1;
109 unsigned int max_channels = 2;
111 switch(avctx->codec->id) {
112 case AV_CODEC_ID_ADPCM_DTK:
113 case AV_CODEC_ID_ADPCM_EA:
116 case AV_CODEC_ID_ADPCM_AFC:
117 case AV_CODEC_ID_ADPCM_EA_R1:
118 case AV_CODEC_ID_ADPCM_EA_R2:
119 case AV_CODEC_ID_ADPCM_EA_R3:
120 case AV_CODEC_ID_ADPCM_EA_XAS:
121 case AV_CODEC_ID_ADPCM_MS:
124 case AV_CODEC_ID_ADPCM_MTAF:
127 if (avctx->channels & 1) {
128 avpriv_request_sample(avctx, "channel count %d\n", avctx->channels);
129 return AVERROR_PATCHWELCOME;
132 case AV_CODEC_ID_ADPCM_PSX:
135 case AV_CODEC_ID_ADPCM_IMA_DAT4:
136 case AV_CODEC_ID_ADPCM_THP:
137 case AV_CODEC_ID_ADPCM_THP_LE:
141 if (avctx->channels < min_channels || avctx->channels > max_channels) {
142 av_log(avctx, AV_LOG_ERROR, "Invalid number of channels\n");
143 return AVERROR(EINVAL);
146 switch(avctx->codec->id) {
147 case AV_CODEC_ID_ADPCM_CT:
148 c->status[0].step = c->status[1].step = 511;
150 case AV_CODEC_ID_ADPCM_IMA_WAV:
151 if (avctx->bits_per_coded_sample < 2 || avctx->bits_per_coded_sample > 5)
152 return AVERROR_INVALIDDATA;
154 case AV_CODEC_ID_ADPCM_IMA_APC:
155 if (avctx->extradata && avctx->extradata_size >= 8) {
156 c->status[0].predictor = av_clip_intp2(AV_RL32(avctx->extradata ), 18);
157 c->status[1].predictor = av_clip_intp2(AV_RL32(avctx->extradata + 4), 18);
160 case AV_CODEC_ID_ADPCM_IMA_APM:
161 if (avctx->extradata && avctx->extradata_size >= 16) {
162 c->status[0].predictor = AV_RL32(avctx->extradata + 0);
163 c->status[0].step_index = av_clip(AV_RL32(avctx->extradata + 4), 0, 88);
164 c->status[1].predictor = AV_RL32(avctx->extradata + 8);
165 c->status[1].step_index = av_clip(AV_RL32(avctx->extradata + 12), 0, 88);
168 case AV_CODEC_ID_ADPCM_IMA_WS:
169 if (avctx->extradata && avctx->extradata_size >= 2)
170 c->vqa_version = AV_RL16(avctx->extradata);
172 case AV_CODEC_ID_ADPCM_ARGO:
173 if (avctx->bits_per_coded_sample != 4)
174 return AVERROR_INVALIDDATA;
176 case AV_CODEC_ID_ADPCM_ZORK:
177 if (avctx->bits_per_coded_sample != 8)
178 return AVERROR_INVALIDDATA;
184 switch (avctx->codec->id) {
185 case AV_CODEC_ID_ADPCM_AICA:
186 case AV_CODEC_ID_ADPCM_IMA_DAT4:
187 case AV_CODEC_ID_ADPCM_IMA_QT:
188 case AV_CODEC_ID_ADPCM_IMA_WAV:
189 case AV_CODEC_ID_ADPCM_4XM:
190 case AV_CODEC_ID_ADPCM_XA:
191 case AV_CODEC_ID_ADPCM_EA_R1:
192 case AV_CODEC_ID_ADPCM_EA_R2:
193 case AV_CODEC_ID_ADPCM_EA_R3:
194 case AV_CODEC_ID_ADPCM_EA_XAS:
195 case AV_CODEC_ID_ADPCM_THP:
196 case AV_CODEC_ID_ADPCM_THP_LE:
197 case AV_CODEC_ID_ADPCM_AFC:
198 case AV_CODEC_ID_ADPCM_DTK:
199 case AV_CODEC_ID_ADPCM_PSX:
200 case AV_CODEC_ID_ADPCM_MTAF:
201 case AV_CODEC_ID_ADPCM_ARGO:
202 avctx->sample_fmt = AV_SAMPLE_FMT_S16P;
204 case AV_CODEC_ID_ADPCM_IMA_WS:
205 avctx->sample_fmt = c->vqa_version == 3 ? AV_SAMPLE_FMT_S16P :
208 case AV_CODEC_ID_ADPCM_MS:
209 avctx->sample_fmt = avctx->channels > 2 ? AV_SAMPLE_FMT_S16P :
213 avctx->sample_fmt = AV_SAMPLE_FMT_S16;
219 static inline int16_t adpcm_agm_expand_nibble(ADPCMChannelStatus *c, int8_t nibble)
221 int delta, pred, step, add;
226 add = (delta * 2 + 1) * step;
230 if ((nibble & 8) == 0)
231 pred = av_clip(pred + (add >> 3), -32767, 32767);
233 pred = av_clip(pred - (add >> 3), -32767, 32767);
240 c->step = av_clip(c->step * 2, 127, 24576);
258 c->step = av_clip(c->step, 127, 24576);
263 static inline int16_t adpcm_ima_expand_nibble(ADPCMChannelStatus *c, int8_t nibble, int shift)
267 int sign, delta, diff, step;
269 step = ff_adpcm_step_table[c->step_index];
270 step_index = c->step_index + ff_adpcm_index_table[(unsigned)nibble];
271 step_index = av_clip(step_index, 0, 88);
275 /* perform direct multiplication instead of series of jumps proposed by
276 * the reference ADPCM implementation since modern CPUs can do the mults
278 diff = ((2 * delta + 1) * step) >> shift;
279 predictor = c->predictor;
280 if (sign) predictor -= diff;
281 else predictor += diff;
283 c->predictor = av_clip_int16(predictor);
284 c->step_index = step_index;
286 return (int16_t)c->predictor;
289 static inline int16_t adpcm_ima_alp_expand_nibble(ADPCMChannelStatus *c, int8_t nibble, int shift)
293 int sign, delta, diff, step;
295 step = ff_adpcm_step_table[c->step_index];
296 step_index = c->step_index + ff_adpcm_index_table[(unsigned)nibble];
297 step_index = av_clip(step_index, 0, 88);
301 diff = (delta * step) >> shift;
302 predictor = c->predictor;
303 if (sign) predictor -= diff;
304 else predictor += diff;
306 c->predictor = av_clip_int16(predictor);
307 c->step_index = step_index;
309 return (int16_t)c->predictor;
312 static inline int16_t adpcm_ima_mtf_expand_nibble(ADPCMChannelStatus *c, int nibble)
314 int step_index, step, delta, predictor;
316 step = ff_adpcm_step_table[c->step_index];
318 delta = step * (2 * nibble - 15);
319 predictor = c->predictor + delta;
321 step_index = c->step_index + mtf_index_table[(unsigned)nibble];
322 c->predictor = av_clip_int16(predictor >> 4);
323 c->step_index = av_clip(step_index, 0, 88);
325 return (int16_t)c->predictor;
328 static inline int16_t adpcm_ima_wav_expand_nibble(ADPCMChannelStatus *c, GetBitContext *gb, int bps)
330 int nibble, step_index, predictor, sign, delta, diff, step, shift;
333 nibble = get_bits_le(gb, bps),
334 step = ff_adpcm_step_table[c->step_index];
335 step_index = c->step_index + ff_adpcm_index_tables[bps - 2][nibble];
336 step_index = av_clip(step_index, 0, 88);
338 sign = nibble & (1 << shift);
339 delta = av_mod_uintp2(nibble, shift);
340 diff = ((2 * delta + 1) * step) >> shift;
341 predictor = c->predictor;
342 if (sign) predictor -= diff;
343 else predictor += diff;
345 c->predictor = av_clip_int16(predictor);
346 c->step_index = step_index;
348 return (int16_t)c->predictor;
351 static inline int adpcm_ima_qt_expand_nibble(ADPCMChannelStatus *c, int nibble, int shift)
357 step = ff_adpcm_step_table[c->step_index];
358 step_index = c->step_index + ff_adpcm_index_table[nibble];
359 step_index = av_clip(step_index, 0, 88);
362 if (nibble & 4) diff += step;
363 if (nibble & 2) diff += step >> 1;
364 if (nibble & 1) diff += step >> 2;
367 predictor = c->predictor - diff;
369 predictor = c->predictor + diff;
371 c->predictor = av_clip_int16(predictor);
372 c->step_index = step_index;
377 static inline int16_t adpcm_ms_expand_nibble(ADPCMChannelStatus *c, int nibble)
381 predictor = (((c->sample1) * (c->coeff1)) + ((c->sample2) * (c->coeff2))) / 64;
382 predictor += ((nibble & 0x08)?(nibble - 0x10):(nibble)) * c->idelta;
384 c->sample2 = c->sample1;
385 c->sample1 = av_clip_int16(predictor);
386 c->idelta = (ff_adpcm_AdaptationTable[(int)nibble] * c->idelta) >> 8;
387 if (c->idelta < 16) c->idelta = 16;
388 if (c->idelta > INT_MAX/768) {
389 av_log(NULL, AV_LOG_WARNING, "idelta overflow\n");
390 c->idelta = INT_MAX/768;
396 static inline int16_t adpcm_ima_oki_expand_nibble(ADPCMChannelStatus *c, int nibble)
398 int step_index, predictor, sign, delta, diff, step;
400 step = ff_adpcm_oki_step_table[c->step_index];
401 step_index = c->step_index + ff_adpcm_index_table[(unsigned)nibble];
402 step_index = av_clip(step_index, 0, 48);
406 diff = ((2 * delta + 1) * step) >> 3;
407 predictor = c->predictor;
408 if (sign) predictor -= diff;
409 else predictor += diff;
411 c->predictor = av_clip_intp2(predictor, 11);
412 c->step_index = step_index;
414 return c->predictor * 16;
417 static inline int16_t adpcm_ct_expand_nibble(ADPCMChannelStatus *c, int8_t nibble)
419 int sign, delta, diff;
424 /* perform direct multiplication instead of series of jumps proposed by
425 * the reference ADPCM implementation since modern CPUs can do the mults
427 diff = ((2 * delta + 1) * c->step) >> 3;
428 /* predictor update is not so trivial: predictor is multiplied on 254/256 before updating */
429 c->predictor = ((c->predictor * 254) >> 8) + (sign ? -diff : diff);
430 c->predictor = av_clip_int16(c->predictor);
431 /* calculate new step and clamp it to range 511..32767 */
432 new_step = (ff_adpcm_AdaptationTable[nibble & 7] * c->step) >> 8;
433 c->step = av_clip(new_step, 511, 32767);
435 return (int16_t)c->predictor;
438 static inline int16_t adpcm_sbpro_expand_nibble(ADPCMChannelStatus *c, int8_t nibble, int size, int shift)
440 int sign, delta, diff;
442 sign = nibble & (1<<(size-1));
443 delta = nibble & ((1<<(size-1))-1);
444 diff = delta << (7 + c->step + shift);
447 c->predictor = av_clip(c->predictor + (sign ? -diff : diff), -16384,16256);
449 /* calculate new step */
450 if (delta >= (2*size - 3) && c->step < 3)
452 else if (delta == 0 && c->step > 0)
455 return (int16_t) c->predictor;
458 static inline int16_t adpcm_yamaha_expand_nibble(ADPCMChannelStatus *c, uint8_t nibble)
465 c->predictor += (c->step * ff_adpcm_yamaha_difflookup[nibble]) / 8;
466 c->predictor = av_clip_int16(c->predictor);
467 c->step = (c->step * ff_adpcm_yamaha_indexscale[nibble]) >> 8;
468 c->step = av_clip(c->step, 127, 24576);
472 static inline int16_t adpcm_mtaf_expand_nibble(ADPCMChannelStatus *c, uint8_t nibble)
474 c->predictor += ff_adpcm_mtaf_stepsize[c->step][nibble];
475 c->predictor = av_clip_int16(c->predictor);
476 c->step += ff_adpcm_index_table[nibble];
477 c->step = av_clip_uintp2(c->step, 5);
481 static inline int16_t adpcm_zork_expand_nibble(ADPCMChannelStatus *c, uint8_t nibble)
483 int16_t index = c->step_index;
484 uint32_t lookup_sample = ff_adpcm_step_table[index];
488 sample += lookup_sample;
490 sample += lookup_sample >> 1;
492 sample += lookup_sample >> 2;
494 sample += lookup_sample >> 3;
496 sample += lookup_sample >> 4;
498 sample += lookup_sample >> 5;
500 sample += lookup_sample >> 6;
504 sample += c->predictor;
505 sample = av_clip_int16(sample);
507 index += zork_index_table[(nibble >> 4) & 7];
508 index = av_clip(index, 0, 88);
510 c->predictor = sample;
511 c->step_index = index;
516 static int xa_decode(AVCodecContext *avctx, int16_t *out0, int16_t *out1,
517 const uint8_t *in, ADPCMChannelStatus *left,
518 ADPCMChannelStatus *right, int channels, int sample_offset)
521 int shift,filter,f0,f1;
525 out0 += sample_offset;
529 out1 += sample_offset;
532 shift = 12 - (in[4+i*2] & 15);
533 filter = in[4+i*2] >> 4;
534 if (filter >= FF_ARRAY_ELEMS(xa_adpcm_table)) {
535 avpriv_request_sample(avctx, "unknown XA-ADPCM filter %d", filter);
538 f0 = xa_adpcm_table[filter][0];
539 f1 = xa_adpcm_table[filter][1];
547 t = sign_extend(d, 4);
548 s = t*(1<<shift) + ((s_1*f0 + s_2*f1+32)>>6);
550 s_1 = av_clip_int16(s);
557 s_1 = right->sample1;
558 s_2 = right->sample2;
561 shift = 12 - (in[5+i*2] & 15);
562 filter = in[5+i*2] >> 4;
563 if (filter >= FF_ARRAY_ELEMS(xa_adpcm_table)) {
564 avpriv_request_sample(avctx, "unknown XA-ADPCM filter %d", filter);
568 f0 = xa_adpcm_table[filter][0];
569 f1 = xa_adpcm_table[filter][1];
574 t = sign_extend(d >> 4, 4);
575 s = t*(1<<shift) + ((s_1*f0 + s_2*f1+32)>>6);
577 s_1 = av_clip_int16(s);
582 right->sample1 = s_1;
583 right->sample2 = s_2;
589 out0 += 28 * (3 - channels);
590 out1 += 28 * (3 - channels);
596 static void adpcm_swf_decode(AVCodecContext *avctx, const uint8_t *buf, int buf_size, int16_t *samples)
598 ADPCMDecodeContext *c = avctx->priv_data;
601 int k0, signmask, nb_bits, count;
602 int size = buf_size*8;
605 init_get_bits(&gb, buf, size);
607 //read bits & initial values
608 nb_bits = get_bits(&gb, 2)+2;
609 table = swf_index_tables[nb_bits-2];
610 k0 = 1 << (nb_bits-2);
611 signmask = 1 << (nb_bits-1);
613 while (get_bits_count(&gb) <= size - 22*avctx->channels) {
614 for (i = 0; i < avctx->channels; i++) {
615 *samples++ = c->status[i].predictor = get_sbits(&gb, 16);
616 c->status[i].step_index = get_bits(&gb, 6);
619 for (count = 0; get_bits_count(&gb) <= size - nb_bits*avctx->channels && count < 4095; count++) {
622 for (i = 0; i < avctx->channels; i++) {
623 // similar to IMA adpcm
624 int delta = get_bits(&gb, nb_bits);
625 int step = ff_adpcm_step_table[c->status[i].step_index];
626 int vpdiff = 0; // vpdiff = (delta+0.5)*step/4
637 if (delta & signmask)
638 c->status[i].predictor -= vpdiff;
640 c->status[i].predictor += vpdiff;
642 c->status[i].step_index += table[delta & (~signmask)];
644 c->status[i].step_index = av_clip(c->status[i].step_index, 0, 88);
645 c->status[i].predictor = av_clip_int16(c->status[i].predictor);
647 *samples++ = c->status[i].predictor;
653 static inline int16_t adpcm_argo_expand_nibble(ADPCMChannelStatus *cs, int nibble, int control, int shift)
655 int sample = nibble * (1 << shift);
658 sample += (8 * cs->sample1) - (4 * cs->sample2);
660 sample += 4 * cs->sample1;
662 sample = av_clip_int16(sample >> 2);
664 cs->sample2 = cs->sample1;
665 cs->sample1 = sample;
671 * Get the number of samples that will be decoded from the packet.
672 * In one case, this is actually the maximum number of samples possible to
673 * decode with the given buf_size.
675 * @param[out] coded_samples set to the number of samples as coded in the
676 * packet, or 0 if the codec does not encode the
677 * number of samples in each frame.
678 * @param[out] approx_nb_samples set to non-zero if the number of samples
679 * returned is an approximation.
681 static int get_nb_samples(AVCodecContext *avctx, GetByteContext *gb,
682 int buf_size, int *coded_samples, int *approx_nb_samples)
684 ADPCMDecodeContext *s = avctx->priv_data;
686 int ch = avctx->channels;
687 int has_coded_samples = 0;
691 *approx_nb_samples = 0;
696 switch (avctx->codec->id) {
697 /* constant, only check buf_size */
698 case AV_CODEC_ID_ADPCM_EA_XAS:
699 if (buf_size < 76 * ch)
703 case AV_CODEC_ID_ADPCM_IMA_QT:
704 if (buf_size < 34 * ch)
708 case AV_CODEC_ID_ADPCM_ARGO:
709 if (buf_size < 17 * ch)
713 /* simple 4-bit adpcm */
714 case AV_CODEC_ID_ADPCM_CT:
715 case AV_CODEC_ID_ADPCM_IMA_APC:
716 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
717 case AV_CODEC_ID_ADPCM_IMA_OKI:
718 case AV_CODEC_ID_ADPCM_IMA_WS:
719 case AV_CODEC_ID_ADPCM_YAMAHA:
720 case AV_CODEC_ID_ADPCM_AICA:
721 case AV_CODEC_ID_ADPCM_IMA_SSI:
722 case AV_CODEC_ID_ADPCM_IMA_APM:
723 case AV_CODEC_ID_ADPCM_IMA_ALP:
724 case AV_CODEC_ID_ADPCM_IMA_MTF:
725 nb_samples = buf_size * 2 / ch;
731 /* simple 4-bit adpcm, with header */
733 switch (avctx->codec->id) {
734 case AV_CODEC_ID_ADPCM_4XM:
735 case AV_CODEC_ID_ADPCM_AGM:
736 case AV_CODEC_ID_ADPCM_IMA_DAT4:
737 case AV_CODEC_ID_ADPCM_IMA_ISS: header_size = 4 * ch; break;
738 case AV_CODEC_ID_ADPCM_IMA_AMV: header_size = 8; break;
739 case AV_CODEC_ID_ADPCM_IMA_SMJPEG: header_size = 4 * ch; break;
742 return (buf_size - header_size) * 2 / ch;
744 /* more complex formats */
745 switch (avctx->codec->id) {
746 case AV_CODEC_ID_ADPCM_EA:
747 has_coded_samples = 1;
748 *coded_samples = bytestream2_get_le32(gb);
749 *coded_samples -= *coded_samples % 28;
750 nb_samples = (buf_size - 12) / 30 * 28;
752 case AV_CODEC_ID_ADPCM_IMA_EA_EACS:
753 has_coded_samples = 1;
754 *coded_samples = bytestream2_get_le32(gb);
755 nb_samples = (buf_size - (4 + 8 * ch)) * 2 / ch;
757 case AV_CODEC_ID_ADPCM_EA_MAXIS_XA:
758 nb_samples = (buf_size - ch) / ch * 2;
760 case AV_CODEC_ID_ADPCM_EA_R1:
761 case AV_CODEC_ID_ADPCM_EA_R2:
762 case AV_CODEC_ID_ADPCM_EA_R3:
763 /* maximum number of samples */
764 /* has internal offsets and a per-frame switch to signal raw 16-bit */
765 has_coded_samples = 1;
766 switch (avctx->codec->id) {
767 case AV_CODEC_ID_ADPCM_EA_R1:
768 header_size = 4 + 9 * ch;
769 *coded_samples = bytestream2_get_le32(gb);
771 case AV_CODEC_ID_ADPCM_EA_R2:
772 header_size = 4 + 5 * ch;
773 *coded_samples = bytestream2_get_le32(gb);
775 case AV_CODEC_ID_ADPCM_EA_R3:
776 header_size = 4 + 5 * ch;
777 *coded_samples = bytestream2_get_be32(gb);
780 *coded_samples -= *coded_samples % 28;
781 nb_samples = (buf_size - header_size) * 2 / ch;
782 nb_samples -= nb_samples % 28;
783 *approx_nb_samples = 1;
785 case AV_CODEC_ID_ADPCM_IMA_DK3:
786 if (avctx->block_align > 0)
787 buf_size = FFMIN(buf_size, avctx->block_align);
788 nb_samples = ((buf_size - 16) * 2 / 3 * 4) / ch;
790 case AV_CODEC_ID_ADPCM_IMA_DK4:
791 if (avctx->block_align > 0)
792 buf_size = FFMIN(buf_size, avctx->block_align);
793 if (buf_size < 4 * ch)
794 return AVERROR_INVALIDDATA;
795 nb_samples = 1 + (buf_size - 4 * ch) * 2 / ch;
797 case AV_CODEC_ID_ADPCM_IMA_RAD:
798 if (avctx->block_align > 0)
799 buf_size = FFMIN(buf_size, avctx->block_align);
800 nb_samples = (buf_size - 4 * ch) * 2 / ch;
802 case AV_CODEC_ID_ADPCM_IMA_WAV:
804 int bsize = ff_adpcm_ima_block_sizes[avctx->bits_per_coded_sample - 2];
805 int bsamples = ff_adpcm_ima_block_samples[avctx->bits_per_coded_sample - 2];
806 if (avctx->block_align > 0)
807 buf_size = FFMIN(buf_size, avctx->block_align);
808 if (buf_size < 4 * ch)
809 return AVERROR_INVALIDDATA;
810 nb_samples = 1 + (buf_size - 4 * ch) / (bsize * ch) * bsamples;
813 case AV_CODEC_ID_ADPCM_MS:
814 if (avctx->block_align > 0)
815 buf_size = FFMIN(buf_size, avctx->block_align);
816 nb_samples = (buf_size - 6 * ch) * 2 / ch;
818 case AV_CODEC_ID_ADPCM_MTAF:
819 if (avctx->block_align > 0)
820 buf_size = FFMIN(buf_size, avctx->block_align);
821 nb_samples = (buf_size - 16 * (ch / 2)) * 2 / ch;
823 case AV_CODEC_ID_ADPCM_SBPRO_2:
824 case AV_CODEC_ID_ADPCM_SBPRO_3:
825 case AV_CODEC_ID_ADPCM_SBPRO_4:
827 int samples_per_byte;
828 switch (avctx->codec->id) {
829 case AV_CODEC_ID_ADPCM_SBPRO_2: samples_per_byte = 4; break;
830 case AV_CODEC_ID_ADPCM_SBPRO_3: samples_per_byte = 3; break;
831 case AV_CODEC_ID_ADPCM_SBPRO_4: samples_per_byte = 2; break;
833 if (!s->status[0].step_index) {
835 return AVERROR_INVALIDDATA;
839 nb_samples += buf_size * samples_per_byte / ch;
842 case AV_CODEC_ID_ADPCM_SWF:
844 int buf_bits = buf_size * 8 - 2;
845 int nbits = (bytestream2_get_byte(gb) >> 6) + 2;
846 int block_hdr_size = 22 * ch;
847 int block_size = block_hdr_size + nbits * ch * 4095;
848 int nblocks = buf_bits / block_size;
849 int bits_left = buf_bits - nblocks * block_size;
850 nb_samples = nblocks * 4096;
851 if (bits_left >= block_hdr_size)
852 nb_samples += 1 + (bits_left - block_hdr_size) / (nbits * ch);
855 case AV_CODEC_ID_ADPCM_THP:
856 case AV_CODEC_ID_ADPCM_THP_LE:
857 if (avctx->extradata) {
858 nb_samples = buf_size * 14 / (8 * ch);
861 has_coded_samples = 1;
862 bytestream2_skip(gb, 4); // channel size
863 *coded_samples = (avctx->codec->id == AV_CODEC_ID_ADPCM_THP_LE) ?
864 bytestream2_get_le32(gb) :
865 bytestream2_get_be32(gb);
866 buf_size -= 8 + 36 * ch;
868 nb_samples = buf_size / 8 * 14;
869 if (buf_size % 8 > 1)
870 nb_samples += (buf_size % 8 - 1) * 2;
871 *approx_nb_samples = 1;
873 case AV_CODEC_ID_ADPCM_AFC:
874 nb_samples = buf_size / (9 * ch) * 16;
876 case AV_CODEC_ID_ADPCM_XA:
877 nb_samples = (buf_size / 128) * 224 / ch;
879 case AV_CODEC_ID_ADPCM_DTK:
880 case AV_CODEC_ID_ADPCM_PSX:
881 nb_samples = buf_size / (16 * ch) * 28;
883 case AV_CODEC_ID_ADPCM_ZORK:
884 nb_samples = buf_size / ch;
888 /* validate coded sample count */
889 if (has_coded_samples && (*coded_samples <= 0 || *coded_samples > nb_samples))
890 return AVERROR_INVALIDDATA;
895 static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
896 int *got_frame_ptr, AVPacket *avpkt)
898 AVFrame *frame = data;
899 const uint8_t *buf = avpkt->data;
900 int buf_size = avpkt->size;
901 ADPCMDecodeContext *c = avctx->priv_data;
902 ADPCMChannelStatus *cs;
903 int n, m, channel, i;
908 int nb_samples, coded_samples, approx_nb_samples, ret;
911 bytestream2_init(&gb, buf, buf_size);
912 nb_samples = get_nb_samples(avctx, &gb, buf_size, &coded_samples, &approx_nb_samples);
913 if (nb_samples <= 0) {
914 av_log(avctx, AV_LOG_ERROR, "invalid number of samples in packet\n");
915 return AVERROR_INVALIDDATA;
918 /* get output buffer */
919 frame->nb_samples = nb_samples;
920 if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
922 samples = (int16_t *)frame->data[0];
923 samples_p = (int16_t **)frame->extended_data;
925 /* use coded_samples when applicable */
926 /* it is always <= nb_samples, so the output buffer will be large enough */
928 if (!approx_nb_samples && coded_samples != nb_samples)
929 av_log(avctx, AV_LOG_WARNING, "mismatch in coded sample count\n");
930 frame->nb_samples = nb_samples = coded_samples;
933 st = avctx->channels == 2 ? 1 : 0;
935 switch(avctx->codec->id) {
936 case AV_CODEC_ID_ADPCM_IMA_QT:
937 /* In QuickTime, IMA is encoded by chunks of 34 bytes (=64 samples).
938 Channel data is interleaved per-chunk. */
939 for (channel = 0; channel < avctx->channels; channel++) {
942 cs = &(c->status[channel]);
943 /* (pppppp) (piiiiiii) */
945 /* Bits 15-7 are the _top_ 9 bits of the 16-bit initial predictor value */
946 predictor = sign_extend(bytestream2_get_be16u(&gb), 16);
947 step_index = predictor & 0x7F;
950 if (cs->step_index == step_index) {
951 int diff = predictor - cs->predictor;
958 cs->step_index = step_index;
959 cs->predictor = predictor;
962 if (cs->step_index > 88u){
963 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
964 channel, cs->step_index);
965 return AVERROR_INVALIDDATA;
968 samples = samples_p[channel];
970 for (m = 0; m < 64; m += 2) {
971 int byte = bytestream2_get_byteu(&gb);
972 samples[m ] = adpcm_ima_qt_expand_nibble(cs, byte & 0x0F, 3);
973 samples[m + 1] = adpcm_ima_qt_expand_nibble(cs, byte >> 4 , 3);
977 case AV_CODEC_ID_ADPCM_IMA_WAV:
978 for(i=0; i<avctx->channels; i++){
979 cs = &(c->status[i]);
980 cs->predictor = samples_p[i][0] = sign_extend(bytestream2_get_le16u(&gb), 16);
982 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
983 if (cs->step_index > 88u){
984 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
986 return AVERROR_INVALIDDATA;
990 if (avctx->bits_per_coded_sample != 4) {
991 int samples_per_block = ff_adpcm_ima_block_samples[avctx->bits_per_coded_sample - 2];
992 int block_size = ff_adpcm_ima_block_sizes[avctx->bits_per_coded_sample - 2];
993 uint8_t temp[20 + AV_INPUT_BUFFER_PADDING_SIZE] = { 0 };
996 for (n = 0; n < (nb_samples - 1) / samples_per_block; n++) {
997 for (i = 0; i < avctx->channels; i++) {
1001 samples = &samples_p[i][1 + n * samples_per_block];
1002 for (j = 0; j < block_size; j++) {
1003 temp[j] = buf[4 * avctx->channels + block_size * n * avctx->channels +
1004 (j % 4) + (j / 4) * (avctx->channels * 4) + i * 4];
1006 ret = init_get_bits8(&g, (const uint8_t *)&temp, block_size);
1009 for (m = 0; m < samples_per_block; m++) {
1010 samples[m] = adpcm_ima_wav_expand_nibble(cs, &g,
1011 avctx->bits_per_coded_sample);
1015 bytestream2_skip(&gb, avctx->block_align - avctx->channels * 4);
1017 for (n = 0; n < (nb_samples - 1) / 8; n++) {
1018 for (i = 0; i < avctx->channels; i++) {
1020 samples = &samples_p[i][1 + n * 8];
1021 for (m = 0; m < 8; m += 2) {
1022 int v = bytestream2_get_byteu(&gb);
1023 samples[m ] = adpcm_ima_expand_nibble(cs, v & 0x0F, 3);
1024 samples[m + 1] = adpcm_ima_expand_nibble(cs, v >> 4 , 3);
1030 case AV_CODEC_ID_ADPCM_4XM:
1031 for (i = 0; i < avctx->channels; i++)
1032 c->status[i].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1034 for (i = 0; i < avctx->channels; i++) {
1035 c->status[i].step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
1036 if (c->status[i].step_index > 88u) {
1037 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1038 i, c->status[i].step_index);
1039 return AVERROR_INVALIDDATA;
1043 for (i = 0; i < avctx->channels; i++) {
1044 samples = (int16_t *)frame->data[i];
1046 for (n = nb_samples >> 1; n > 0; n--) {
1047 int v = bytestream2_get_byteu(&gb);
1048 *samples++ = adpcm_ima_expand_nibble(cs, v & 0x0F, 4);
1049 *samples++ = adpcm_ima_expand_nibble(cs, v >> 4 , 4);
1053 case AV_CODEC_ID_ADPCM_AGM:
1054 for (i = 0; i < avctx->channels; i++)
1055 c->status[i].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1056 for (i = 0; i < avctx->channels; i++)
1057 c->status[i].step = sign_extend(bytestream2_get_le16u(&gb), 16);
1059 for (n = 0; n < nb_samples >> (1 - st); n++) {
1060 int v = bytestream2_get_byteu(&gb);
1061 *samples++ = adpcm_agm_expand_nibble(&c->status[0], v & 0xF);
1062 *samples++ = adpcm_agm_expand_nibble(&c->status[st], v >> 4 );
1065 case AV_CODEC_ID_ADPCM_MS:
1067 int block_predictor;
1069 if (avctx->channels > 2) {
1070 for (channel = 0; channel < avctx->channels; channel++) {
1071 samples = samples_p[channel];
1072 block_predictor = bytestream2_get_byteu(&gb);
1073 if (block_predictor > 6) {
1074 av_log(avctx, AV_LOG_ERROR, "ERROR: block_predictor[%d] = %d\n",
1075 channel, block_predictor);
1076 return AVERROR_INVALIDDATA;
1078 c->status[channel].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
1079 c->status[channel].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
1080 c->status[channel].idelta = sign_extend(bytestream2_get_le16u(&gb), 16);
1081 c->status[channel].sample1 = sign_extend(bytestream2_get_le16u(&gb), 16);
1082 c->status[channel].sample2 = sign_extend(bytestream2_get_le16u(&gb), 16);
1083 *samples++ = c->status[channel].sample2;
1084 *samples++ = c->status[channel].sample1;
1085 for(n = (nb_samples - 2) >> 1; n > 0; n--) {
1086 int byte = bytestream2_get_byteu(&gb);
1087 *samples++ = adpcm_ms_expand_nibble(&c->status[channel], byte >> 4 );
1088 *samples++ = adpcm_ms_expand_nibble(&c->status[channel], byte & 0x0F);
1092 block_predictor = bytestream2_get_byteu(&gb);
1093 if (block_predictor > 6) {
1094 av_log(avctx, AV_LOG_ERROR, "ERROR: block_predictor[0] = %d\n",
1096 return AVERROR_INVALIDDATA;
1098 c->status[0].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
1099 c->status[0].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
1101 block_predictor = bytestream2_get_byteu(&gb);
1102 if (block_predictor > 6) {
1103 av_log(avctx, AV_LOG_ERROR, "ERROR: block_predictor[1] = %d\n",
1105 return AVERROR_INVALIDDATA;
1107 c->status[1].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
1108 c->status[1].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
1110 c->status[0].idelta = sign_extend(bytestream2_get_le16u(&gb), 16);
1112 c->status[1].idelta = sign_extend(bytestream2_get_le16u(&gb), 16);
1115 c->status[0].sample1 = sign_extend(bytestream2_get_le16u(&gb), 16);
1116 if (st) c->status[1].sample1 = sign_extend(bytestream2_get_le16u(&gb), 16);
1117 c->status[0].sample2 = sign_extend(bytestream2_get_le16u(&gb), 16);
1118 if (st) c->status[1].sample2 = sign_extend(bytestream2_get_le16u(&gb), 16);
1120 *samples++ = c->status[0].sample2;
1121 if (st) *samples++ = c->status[1].sample2;
1122 *samples++ = c->status[0].sample1;
1123 if (st) *samples++ = c->status[1].sample1;
1124 for(n = (nb_samples - 2) >> (1 - st); n > 0; n--) {
1125 int byte = bytestream2_get_byteu(&gb);
1126 *samples++ = adpcm_ms_expand_nibble(&c->status[0 ], byte >> 4 );
1127 *samples++ = adpcm_ms_expand_nibble(&c->status[st], byte & 0x0F);
1132 case AV_CODEC_ID_ADPCM_MTAF:
1133 for (channel = 0; channel < avctx->channels; channel+=2) {
1134 bytestream2_skipu(&gb, 4);
1135 c->status[channel ].step = bytestream2_get_le16u(&gb) & 0x1f;
1136 c->status[channel + 1].step = bytestream2_get_le16u(&gb) & 0x1f;
1137 c->status[channel ].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1138 bytestream2_skipu(&gb, 2);
1139 c->status[channel + 1].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1140 bytestream2_skipu(&gb, 2);
1141 for (n = 0; n < nb_samples; n+=2) {
1142 int v = bytestream2_get_byteu(&gb);
1143 samples_p[channel][n ] = adpcm_mtaf_expand_nibble(&c->status[channel], v & 0x0F);
1144 samples_p[channel][n + 1] = adpcm_mtaf_expand_nibble(&c->status[channel], v >> 4 );
1146 for (n = 0; n < nb_samples; n+=2) {
1147 int v = bytestream2_get_byteu(&gb);
1148 samples_p[channel + 1][n ] = adpcm_mtaf_expand_nibble(&c->status[channel + 1], v & 0x0F);
1149 samples_p[channel + 1][n + 1] = adpcm_mtaf_expand_nibble(&c->status[channel + 1], v >> 4 );
1153 case AV_CODEC_ID_ADPCM_IMA_DK4:
1154 for (channel = 0; channel < avctx->channels; channel++) {
1155 cs = &c->status[channel];
1156 cs->predictor = *samples++ = sign_extend(bytestream2_get_le16u(&gb), 16);
1157 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
1158 if (cs->step_index > 88u){
1159 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1160 channel, cs->step_index);
1161 return AVERROR_INVALIDDATA;
1164 for (n = (nb_samples - 1) >> (1 - st); n > 0; n--) {
1165 int v = bytestream2_get_byteu(&gb);
1166 *samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v >> 4 , 3);
1167 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
1170 case AV_CODEC_ID_ADPCM_IMA_DK3:
1174 int decode_top_nibble_next = 0;
1176 const int16_t *samples_end = samples + avctx->channels * nb_samples;
1178 bytestream2_skipu(&gb, 10);
1179 c->status[0].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1180 c->status[1].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1181 c->status[0].step_index = bytestream2_get_byteu(&gb);
1182 c->status[1].step_index = bytestream2_get_byteu(&gb);
1183 if (c->status[0].step_index > 88u || c->status[1].step_index > 88u){
1184 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i/%i\n",
1185 c->status[0].step_index, c->status[1].step_index);
1186 return AVERROR_INVALIDDATA;
1188 /* sign extend the predictors */
1189 diff_channel = c->status[1].predictor;
1191 /* DK3 ADPCM support macro */
1192 #define DK3_GET_NEXT_NIBBLE() \
1193 if (decode_top_nibble_next) { \
1194 nibble = last_byte >> 4; \
1195 decode_top_nibble_next = 0; \
1197 last_byte = bytestream2_get_byteu(&gb); \
1198 nibble = last_byte & 0x0F; \
1199 decode_top_nibble_next = 1; \
1202 while (samples < samples_end) {
1204 /* for this algorithm, c->status[0] is the sum channel and
1205 * c->status[1] is the diff channel */
1207 /* process the first predictor of the sum channel */
1208 DK3_GET_NEXT_NIBBLE();
1209 adpcm_ima_expand_nibble(&c->status[0], nibble, 3);
1211 /* process the diff channel predictor */
1212 DK3_GET_NEXT_NIBBLE();
1213 adpcm_ima_expand_nibble(&c->status[1], nibble, 3);
1215 /* process the first pair of stereo PCM samples */
1216 diff_channel = (diff_channel + c->status[1].predictor) / 2;
1217 *samples++ = c->status[0].predictor + c->status[1].predictor;
1218 *samples++ = c->status[0].predictor - c->status[1].predictor;
1220 /* process the second predictor of the sum channel */
1221 DK3_GET_NEXT_NIBBLE();
1222 adpcm_ima_expand_nibble(&c->status[0], nibble, 3);
1224 /* process the second pair of stereo PCM samples */
1225 diff_channel = (diff_channel + c->status[1].predictor) / 2;
1226 *samples++ = c->status[0].predictor + c->status[1].predictor;
1227 *samples++ = c->status[0].predictor - c->status[1].predictor;
1230 if ((bytestream2_tell(&gb) & 1))
1231 bytestream2_skip(&gb, 1);
1234 case AV_CODEC_ID_ADPCM_IMA_ISS:
1235 for (channel = 0; channel < avctx->channels; channel++) {
1236 cs = &c->status[channel];
1237 cs->predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1238 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
1239 if (cs->step_index > 88u){
1240 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1241 channel, cs->step_index);
1242 return AVERROR_INVALIDDATA;
1246 for (n = nb_samples >> (1 - st); n > 0; n--) {
1248 int v = bytestream2_get_byteu(&gb);
1249 /* nibbles are swapped for mono */
1257 *samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v1, 3);
1258 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v2, 3);
1261 case AV_CODEC_ID_ADPCM_IMA_DAT4:
1262 for (channel = 0; channel < avctx->channels; channel++) {
1263 cs = &c->status[channel];
1264 samples = samples_p[channel];
1265 bytestream2_skip(&gb, 4);
1266 for (n = 0; n < nb_samples; n += 2) {
1267 int v = bytestream2_get_byteu(&gb);
1268 *samples++ = adpcm_ima_expand_nibble(cs, v >> 4 , 3);
1269 *samples++ = adpcm_ima_expand_nibble(cs, v & 0x0F, 3);
1273 case AV_CODEC_ID_ADPCM_IMA_APC:
1274 while (bytestream2_get_bytes_left(&gb) > 0) {
1275 int v = bytestream2_get_byteu(&gb);
1276 *samples++ = adpcm_ima_expand_nibble(&c->status[0], v >> 4 , 3);
1277 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
1280 case AV_CODEC_ID_ADPCM_IMA_SSI:
1281 while (bytestream2_get_bytes_left(&gb) > 0) {
1282 int v = bytestream2_get_byteu(&gb);
1283 *samples++ = adpcm_ima_qt_expand_nibble(&c->status[0], v >> 4 , 3);
1284 *samples++ = adpcm_ima_qt_expand_nibble(&c->status[st], v & 0x0F, 3);
1287 case AV_CODEC_ID_ADPCM_IMA_APM:
1288 for (n = nb_samples / 2; n > 0; n--) {
1289 for (channel = 0; channel < avctx->channels; channel++) {
1290 int v = bytestream2_get_byteu(&gb);
1291 *samples++ = adpcm_ima_qt_expand_nibble(&c->status[channel], v >> 4 , 3);
1292 samples[st] = adpcm_ima_qt_expand_nibble(&c->status[channel], v & 0x0F, 3);
1294 samples += avctx->channels;
1297 case AV_CODEC_ID_ADPCM_IMA_ALP:
1298 for (n = nb_samples / 2; n > 0; n--) {
1299 for (channel = 0; channel < avctx->channels; channel++) {
1300 int v = bytestream2_get_byteu(&gb);
1301 *samples++ = adpcm_ima_alp_expand_nibble(&c->status[channel], v >> 4 , 2);
1302 samples[st] = adpcm_ima_alp_expand_nibble(&c->status[channel], v & 0x0F, 2);
1304 samples += avctx->channels;
1307 case AV_CODEC_ID_ADPCM_IMA_OKI:
1308 while (bytestream2_get_bytes_left(&gb) > 0) {
1309 int v = bytestream2_get_byteu(&gb);
1310 *samples++ = adpcm_ima_oki_expand_nibble(&c->status[0], v >> 4 );
1311 *samples++ = adpcm_ima_oki_expand_nibble(&c->status[st], v & 0x0F);
1314 case AV_CODEC_ID_ADPCM_IMA_RAD:
1315 for (channel = 0; channel < avctx->channels; channel++) {
1316 cs = &c->status[channel];
1317 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
1318 cs->predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1319 if (cs->step_index > 88u){
1320 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1321 channel, cs->step_index);
1322 return AVERROR_INVALIDDATA;
1325 for (n = 0; n < nb_samples / 2; n++) {
1328 byte[0] = bytestream2_get_byteu(&gb);
1330 byte[1] = bytestream2_get_byteu(&gb);
1331 for(channel = 0; channel < avctx->channels; channel++) {
1332 *samples++ = adpcm_ima_expand_nibble(&c->status[channel], byte[channel] & 0x0F, 3);
1334 for(channel = 0; channel < avctx->channels; channel++) {
1335 *samples++ = adpcm_ima_expand_nibble(&c->status[channel], byte[channel] >> 4 , 3);
1339 case AV_CODEC_ID_ADPCM_IMA_WS:
1340 if (c->vqa_version == 3) {
1341 for (channel = 0; channel < avctx->channels; channel++) {
1342 int16_t *smp = samples_p[channel];
1344 for (n = nb_samples / 2; n > 0; n--) {
1345 int v = bytestream2_get_byteu(&gb);
1346 *smp++ = adpcm_ima_expand_nibble(&c->status[channel], v >> 4 , 3);
1347 *smp++ = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
1351 for (n = nb_samples / 2; n > 0; n--) {
1352 for (channel = 0; channel < avctx->channels; channel++) {
1353 int v = bytestream2_get_byteu(&gb);
1354 *samples++ = adpcm_ima_expand_nibble(&c->status[channel], v >> 4 , 3);
1355 samples[st] = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
1357 samples += avctx->channels;
1360 bytestream2_seek(&gb, 0, SEEK_END);
1362 case AV_CODEC_ID_ADPCM_XA:
1364 int16_t *out0 = samples_p[0];
1365 int16_t *out1 = samples_p[1];
1366 int samples_per_block = 28 * (3 - avctx->channels) * 4;
1367 int sample_offset = 0;
1368 int bytes_remaining;
1369 while (bytestream2_get_bytes_left(&gb) >= 128) {
1370 if ((ret = xa_decode(avctx, out0, out1, buf + bytestream2_tell(&gb),
1371 &c->status[0], &c->status[1],
1372 avctx->channels, sample_offset)) < 0)
1374 bytestream2_skipu(&gb, 128);
1375 sample_offset += samples_per_block;
1377 /* Less than a full block of data left, e.g. when reading from
1378 * 2324 byte per sector XA; the remainder is padding */
1379 bytes_remaining = bytestream2_get_bytes_left(&gb);
1380 if (bytes_remaining > 0) {
1381 bytestream2_skip(&gb, bytes_remaining);
1385 case AV_CODEC_ID_ADPCM_IMA_EA_EACS:
1386 for (i=0; i<=st; i++) {
1387 c->status[i].step_index = bytestream2_get_le32u(&gb);
1388 if (c->status[i].step_index > 88u) {
1389 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1390 i, c->status[i].step_index);
1391 return AVERROR_INVALIDDATA;
1394 for (i=0; i<=st; i++) {
1395 c->status[i].predictor = bytestream2_get_le32u(&gb);
1396 if (FFABS((int64_t)c->status[i].predictor) > (1<<16))
1397 return AVERROR_INVALIDDATA;
1400 for (n = nb_samples >> (1 - st); n > 0; n--) {
1401 int byte = bytestream2_get_byteu(&gb);
1402 *samples++ = adpcm_ima_expand_nibble(&c->status[0], byte >> 4, 3);
1403 *samples++ = adpcm_ima_expand_nibble(&c->status[st], byte & 0x0F, 3);
1406 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1407 for (n = nb_samples >> (1 - st); n > 0; n--) {
1408 int byte = bytestream2_get_byteu(&gb);
1409 *samples++ = adpcm_ima_expand_nibble(&c->status[0], byte >> 4, 6);
1410 *samples++ = adpcm_ima_expand_nibble(&c->status[st], byte & 0x0F, 6);
1413 case AV_CODEC_ID_ADPCM_EA:
1415 int previous_left_sample, previous_right_sample;
1416 int current_left_sample, current_right_sample;
1417 int next_left_sample, next_right_sample;
1418 int coeff1l, coeff2l, coeff1r, coeff2r;
1419 int shift_left, shift_right;
1421 /* Each EA ADPCM frame has a 12-byte header followed by 30-byte pieces,
1422 each coding 28 stereo samples. */
1424 if(avctx->channels != 2)
1425 return AVERROR_INVALIDDATA;
1427 current_left_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
1428 previous_left_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
1429 current_right_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
1430 previous_right_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
1432 for (count1 = 0; count1 < nb_samples / 28; count1++) {
1433 int byte = bytestream2_get_byteu(&gb);
1434 coeff1l = ea_adpcm_table[ byte >> 4 ];
1435 coeff2l = ea_adpcm_table[(byte >> 4 ) + 4];
1436 coeff1r = ea_adpcm_table[ byte & 0x0F];
1437 coeff2r = ea_adpcm_table[(byte & 0x0F) + 4];
1439 byte = bytestream2_get_byteu(&gb);
1440 shift_left = 20 - (byte >> 4);
1441 shift_right = 20 - (byte & 0x0F);
1443 for (count2 = 0; count2 < 28; count2++) {
1444 byte = bytestream2_get_byteu(&gb);
1445 next_left_sample = sign_extend(byte >> 4, 4) * (1 << shift_left);
1446 next_right_sample = sign_extend(byte, 4) * (1 << shift_right);
1448 next_left_sample = (next_left_sample +
1449 (current_left_sample * coeff1l) +
1450 (previous_left_sample * coeff2l) + 0x80) >> 8;
1451 next_right_sample = (next_right_sample +
1452 (current_right_sample * coeff1r) +
1453 (previous_right_sample * coeff2r) + 0x80) >> 8;
1455 previous_left_sample = current_left_sample;
1456 current_left_sample = av_clip_int16(next_left_sample);
1457 previous_right_sample = current_right_sample;
1458 current_right_sample = av_clip_int16(next_right_sample);
1459 *samples++ = current_left_sample;
1460 *samples++ = current_right_sample;
1464 bytestream2_skip(&gb, 2); // Skip terminating 0x0000
1468 case AV_CODEC_ID_ADPCM_EA_MAXIS_XA:
1470 int coeff[2][2], shift[2];
1472 for(channel = 0; channel < avctx->channels; channel++) {
1473 int byte = bytestream2_get_byteu(&gb);
1475 coeff[channel][i] = ea_adpcm_table[(byte >> 4) + 4*i];
1476 shift[channel] = 20 - (byte & 0x0F);
1478 for (count1 = 0; count1 < nb_samples / 2; count1++) {
1481 byte[0] = bytestream2_get_byteu(&gb);
1482 if (st) byte[1] = bytestream2_get_byteu(&gb);
1483 for(i = 4; i >= 0; i-=4) { /* Pairwise samples LL RR (st) or LL LL (mono) */
1484 for(channel = 0; channel < avctx->channels; channel++) {
1485 int sample = sign_extend(byte[channel] >> i, 4) * (1 << shift[channel]);
1487 c->status[channel].sample1 * coeff[channel][0] +
1488 c->status[channel].sample2 * coeff[channel][1] + 0x80) >> 8;
1489 c->status[channel].sample2 = c->status[channel].sample1;
1490 c->status[channel].sample1 = av_clip_int16(sample);
1491 *samples++ = c->status[channel].sample1;
1495 bytestream2_seek(&gb, 0, SEEK_END);
1498 case AV_CODEC_ID_ADPCM_EA_R1:
1499 case AV_CODEC_ID_ADPCM_EA_R2:
1500 case AV_CODEC_ID_ADPCM_EA_R3: {
1501 /* channel numbering
1503 4chan: 0=fl, 1=rl, 2=fr, 3=rr
1504 6chan: 0=fl, 1=c, 2=fr, 3=rl, 4=rr, 5=sub */
1505 const int big_endian = avctx->codec->id == AV_CODEC_ID_ADPCM_EA_R3;
1506 int previous_sample, current_sample, next_sample;
1509 unsigned int channel;
1514 for (channel=0; channel<avctx->channels; channel++)
1515 offsets[channel] = (big_endian ? bytestream2_get_be32(&gb) :
1516 bytestream2_get_le32(&gb)) +
1517 (avctx->channels + 1) * 4;
1519 for (channel=0; channel<avctx->channels; channel++) {
1520 bytestream2_seek(&gb, offsets[channel], SEEK_SET);
1521 samplesC = samples_p[channel];
1523 if (avctx->codec->id == AV_CODEC_ID_ADPCM_EA_R1) {
1524 current_sample = sign_extend(bytestream2_get_le16(&gb), 16);
1525 previous_sample = sign_extend(bytestream2_get_le16(&gb), 16);
1527 current_sample = c->status[channel].predictor;
1528 previous_sample = c->status[channel].prev_sample;
1531 for (count1 = 0; count1 < nb_samples / 28; count1++) {
1532 int byte = bytestream2_get_byte(&gb);
1533 if (byte == 0xEE) { /* only seen in R2 and R3 */
1534 current_sample = sign_extend(bytestream2_get_be16(&gb), 16);
1535 previous_sample = sign_extend(bytestream2_get_be16(&gb), 16);
1537 for (count2=0; count2<28; count2++)
1538 *samplesC++ = sign_extend(bytestream2_get_be16(&gb), 16);
1540 coeff1 = ea_adpcm_table[ byte >> 4 ];
1541 coeff2 = ea_adpcm_table[(byte >> 4) + 4];
1542 shift = 20 - (byte & 0x0F);
1544 for (count2=0; count2<28; count2++) {
1546 next_sample = (unsigned)sign_extend(byte, 4) << shift;
1548 byte = bytestream2_get_byte(&gb);
1549 next_sample = (unsigned)sign_extend(byte >> 4, 4) << shift;
1552 next_sample += (current_sample * coeff1) +
1553 (previous_sample * coeff2);
1554 next_sample = av_clip_int16(next_sample >> 8);
1556 previous_sample = current_sample;
1557 current_sample = next_sample;
1558 *samplesC++ = current_sample;
1564 } else if (count != count1) {
1565 av_log(avctx, AV_LOG_WARNING, "per-channel sample count mismatch\n");
1566 count = FFMAX(count, count1);
1569 if (avctx->codec->id != AV_CODEC_ID_ADPCM_EA_R1) {
1570 c->status[channel].predictor = current_sample;
1571 c->status[channel].prev_sample = previous_sample;
1575 frame->nb_samples = count * 28;
1576 bytestream2_seek(&gb, 0, SEEK_END);
1579 case AV_CODEC_ID_ADPCM_EA_XAS:
1580 for (channel=0; channel<avctx->channels; channel++) {
1581 int coeff[2][4], shift[4];
1582 int16_t *s = samples_p[channel];
1583 for (n = 0; n < 4; n++, s += 32) {
1584 int val = sign_extend(bytestream2_get_le16u(&gb), 16);
1586 coeff[i][n] = ea_adpcm_table[(val&0x0F)+4*i];
1589 val = sign_extend(bytestream2_get_le16u(&gb), 16);
1590 shift[n] = 20 - (val & 0x0F);
1594 for (m=2; m<32; m+=2) {
1595 s = &samples_p[channel][m];
1596 for (n = 0; n < 4; n++, s += 32) {
1598 int byte = bytestream2_get_byteu(&gb);
1600 level = sign_extend(byte >> 4, 4) * (1 << shift[n]);
1601 pred = s[-1] * coeff[0][n] + s[-2] * coeff[1][n];
1602 s[0] = av_clip_int16((level + pred + 0x80) >> 8);
1604 level = sign_extend(byte, 4) * (1 << shift[n]);
1605 pred = s[0] * coeff[0][n] + s[-1] * coeff[1][n];
1606 s[1] = av_clip_int16((level + pred + 0x80) >> 8);
1611 case AV_CODEC_ID_ADPCM_IMA_AMV:
1612 c->status[0].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1613 c->status[0].step_index = bytestream2_get_byteu(&gb);
1614 bytestream2_skipu(&gb, 5);
1615 if (c->status[0].step_index > 88u) {
1616 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i\n",
1617 c->status[0].step_index);
1618 return AVERROR_INVALIDDATA;
1621 for (n = nb_samples >> (1 - st); n > 0; n--) {
1622 int v = bytestream2_get_byteu(&gb);
1624 *samples++ = adpcm_ima_expand_nibble(&c->status[0], v >> 4, 3);
1625 *samples++ = adpcm_ima_expand_nibble(&c->status[0], v & 0xf, 3);
1628 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
1629 for (i = 0; i < avctx->channels; i++) {
1630 c->status[i].predictor = sign_extend(bytestream2_get_be16u(&gb), 16);
1631 c->status[i].step_index = bytestream2_get_byteu(&gb);
1632 bytestream2_skipu(&gb, 1);
1633 if (c->status[i].step_index > 88u) {
1634 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i\n",
1635 c->status[i].step_index);
1636 return AVERROR_INVALIDDATA;
1640 for (n = nb_samples >> (1 - st); n > 0; n--) {
1641 int v = bytestream2_get_byteu(&gb);
1643 *samples++ = adpcm_ima_qt_expand_nibble(&c->status[0 ], v >> 4, 3);
1644 *samples++ = adpcm_ima_qt_expand_nibble(&c->status[st], v & 0xf, 3);
1647 case AV_CODEC_ID_ADPCM_CT:
1648 for (n = nb_samples >> (1 - st); n > 0; n--) {
1649 int v = bytestream2_get_byteu(&gb);
1650 *samples++ = adpcm_ct_expand_nibble(&c->status[0 ], v >> 4 );
1651 *samples++ = adpcm_ct_expand_nibble(&c->status[st], v & 0x0F);
1654 case AV_CODEC_ID_ADPCM_SBPRO_4:
1655 case AV_CODEC_ID_ADPCM_SBPRO_3:
1656 case AV_CODEC_ID_ADPCM_SBPRO_2:
1657 if (!c->status[0].step_index) {
1658 /* the first byte is a raw sample */
1659 *samples++ = 128 * (bytestream2_get_byteu(&gb) - 0x80);
1661 *samples++ = 128 * (bytestream2_get_byteu(&gb) - 0x80);
1662 c->status[0].step_index = 1;
1665 if (avctx->codec->id == AV_CODEC_ID_ADPCM_SBPRO_4) {
1666 for (n = nb_samples >> (1 - st); n > 0; n--) {
1667 int byte = bytestream2_get_byteu(&gb);
1668 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1670 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1673 } else if (avctx->codec->id == AV_CODEC_ID_ADPCM_SBPRO_3) {
1674 for (n = (nb_samples<<st) / 3; n > 0; n--) {
1675 int byte = bytestream2_get_byteu(&gb);
1676 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1678 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1679 (byte >> 2) & 0x07, 3, 0);
1680 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1684 for (n = nb_samples >> (2 - st); n > 0; n--) {
1685 int byte = bytestream2_get_byteu(&gb);
1686 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1688 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1689 (byte >> 4) & 0x03, 2, 2);
1690 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1691 (byte >> 2) & 0x03, 2, 2);
1692 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1697 case AV_CODEC_ID_ADPCM_SWF:
1698 adpcm_swf_decode(avctx, buf, buf_size, samples);
1699 bytestream2_seek(&gb, 0, SEEK_END);
1701 case AV_CODEC_ID_ADPCM_YAMAHA:
1702 for (n = nb_samples >> (1 - st); n > 0; n--) {
1703 int v = bytestream2_get_byteu(&gb);
1704 *samples++ = adpcm_yamaha_expand_nibble(&c->status[0 ], v & 0x0F);
1705 *samples++ = adpcm_yamaha_expand_nibble(&c->status[st], v >> 4 );
1708 case AV_CODEC_ID_ADPCM_AICA:
1709 if (!c->has_status) {
1710 for (channel = 0; channel < avctx->channels; channel++)
1711 c->status[channel].step = 0;
1714 for (channel = 0; channel < avctx->channels; channel++) {
1715 samples = samples_p[channel];
1716 for (n = nb_samples >> 1; n > 0; n--) {
1717 int v = bytestream2_get_byteu(&gb);
1718 *samples++ = adpcm_yamaha_expand_nibble(&c->status[channel], v & 0x0F);
1719 *samples++ = adpcm_yamaha_expand_nibble(&c->status[channel], v >> 4 );
1723 case AV_CODEC_ID_ADPCM_AFC:
1725 int samples_per_block;
1728 if (avctx->extradata && avctx->extradata_size == 1 && avctx->extradata[0]) {
1729 samples_per_block = avctx->extradata[0] / 16;
1730 blocks = nb_samples / avctx->extradata[0];
1732 samples_per_block = nb_samples / 16;
1736 for (m = 0; m < blocks; m++) {
1737 for (channel = 0; channel < avctx->channels; channel++) {
1738 int prev1 = c->status[channel].sample1;
1739 int prev2 = c->status[channel].sample2;
1741 samples = samples_p[channel] + m * 16;
1742 /* Read in every sample for this channel. */
1743 for (i = 0; i < samples_per_block; i++) {
1744 int byte = bytestream2_get_byteu(&gb);
1745 int scale = 1 << (byte >> 4);
1746 int index = byte & 0xf;
1747 int factor1 = ff_adpcm_afc_coeffs[0][index];
1748 int factor2 = ff_adpcm_afc_coeffs[1][index];
1750 /* Decode 16 samples. */
1751 for (n = 0; n < 16; n++) {
1755 sampledat = sign_extend(byte, 4);
1757 byte = bytestream2_get_byteu(&gb);
1758 sampledat = sign_extend(byte >> 4, 4);
1761 sampledat = ((prev1 * factor1 + prev2 * factor2) >> 11) +
1763 *samples = av_clip_int16(sampledat);
1769 c->status[channel].sample1 = prev1;
1770 c->status[channel].sample2 = prev2;
1773 bytestream2_seek(&gb, 0, SEEK_END);
1776 case AV_CODEC_ID_ADPCM_THP:
1777 case AV_CODEC_ID_ADPCM_THP_LE:
1782 #define THP_GET16(g) \
1784 avctx->codec->id == AV_CODEC_ID_ADPCM_THP_LE ? \
1785 bytestream2_get_le16u(&(g)) : \
1786 bytestream2_get_be16u(&(g)), 16)
1788 if (avctx->extradata) {
1790 if (avctx->extradata_size < 32 * avctx->channels) {
1791 av_log(avctx, AV_LOG_ERROR, "Missing coeff table\n");
1792 return AVERROR_INVALIDDATA;
1795 bytestream2_init(&tb, avctx->extradata, avctx->extradata_size);
1796 for (i = 0; i < avctx->channels; i++)
1797 for (n = 0; n < 16; n++)
1798 table[i][n] = THP_GET16(tb);
1800 for (i = 0; i < avctx->channels; i++)
1801 for (n = 0; n < 16; n++)
1802 table[i][n] = THP_GET16(gb);
1804 if (!c->has_status) {
1805 /* Initialize the previous sample. */
1806 for (i = 0; i < avctx->channels; i++) {
1807 c->status[i].sample1 = THP_GET16(gb);
1808 c->status[i].sample2 = THP_GET16(gb);
1812 bytestream2_skip(&gb, avctx->channels * 4);
1816 for (ch = 0; ch < avctx->channels; ch++) {
1817 samples = samples_p[ch];
1819 /* Read in every sample for this channel. */
1820 for (i = 0; i < (nb_samples + 13) / 14; i++) {
1821 int byte = bytestream2_get_byteu(&gb);
1822 int index = (byte >> 4) & 7;
1823 unsigned int exp = byte & 0x0F;
1824 int factor1 = table[ch][index * 2];
1825 int factor2 = table[ch][index * 2 + 1];
1827 /* Decode 14 samples. */
1828 for (n = 0; n < 14 && (i * 14 + n < nb_samples); n++) {
1832 sampledat = sign_extend(byte, 4);
1834 byte = bytestream2_get_byteu(&gb);
1835 sampledat = sign_extend(byte >> 4, 4);
1838 sampledat = ((c->status[ch].sample1 * factor1
1839 + c->status[ch].sample2 * factor2) >> 11) + sampledat * (1 << exp);
1840 *samples = av_clip_int16(sampledat);
1841 c->status[ch].sample2 = c->status[ch].sample1;
1842 c->status[ch].sample1 = *samples++;
1848 case AV_CODEC_ID_ADPCM_DTK:
1849 for (channel = 0; channel < avctx->channels; channel++) {
1850 samples = samples_p[channel];
1852 /* Read in every sample for this channel. */
1853 for (i = 0; i < nb_samples / 28; i++) {
1856 bytestream2_skipu(&gb, 1);
1857 header = bytestream2_get_byteu(&gb);
1858 bytestream2_skipu(&gb, 3 - channel);
1860 /* Decode 28 samples. */
1861 for (n = 0; n < 28; n++) {
1862 int32_t sampledat, prev;
1864 switch (header >> 4) {
1866 prev = (c->status[channel].sample1 * 0x3c);
1869 prev = (c->status[channel].sample1 * 0x73) - (c->status[channel].sample2 * 0x34);
1872 prev = (c->status[channel].sample1 * 0x62) - (c->status[channel].sample2 * 0x37);
1878 prev = av_clip_intp2((prev + 0x20) >> 6, 21);
1880 byte = bytestream2_get_byteu(&gb);
1882 sampledat = sign_extend(byte, 4);
1884 sampledat = sign_extend(byte >> 4, 4);
1886 sampledat = ((sampledat * (1 << 12)) >> (header & 0xf)) * (1 << 6) + prev;
1887 *samples++ = av_clip_int16(sampledat >> 6);
1888 c->status[channel].sample2 = c->status[channel].sample1;
1889 c->status[channel].sample1 = sampledat;
1893 bytestream2_seek(&gb, 0, SEEK_SET);
1896 case AV_CODEC_ID_ADPCM_PSX:
1897 for (channel = 0; channel < avctx->channels; channel++) {
1898 samples = samples_p[channel];
1900 /* Read in every sample for this channel. */
1901 for (i = 0; i < nb_samples / 28; i++) {
1902 int filter, shift, flag, byte;
1904 filter = bytestream2_get_byteu(&gb);
1905 shift = filter & 0xf;
1906 filter = filter >> 4;
1907 if (filter >= FF_ARRAY_ELEMS(xa_adpcm_table))
1908 return AVERROR_INVALIDDATA;
1909 flag = bytestream2_get_byteu(&gb);
1911 /* Decode 28 samples. */
1912 for (n = 0; n < 28; n++) {
1913 int sample = 0, scale;
1917 scale = sign_extend(byte >> 4, 4);
1919 byte = bytestream2_get_byteu(&gb);
1920 scale = sign_extend(byte, 4);
1923 scale = scale * (1 << 12);
1924 sample = (int)((scale >> shift) + (c->status[channel].sample1 * xa_adpcm_table[filter][0] + c->status[channel].sample2 * xa_adpcm_table[filter][1]) / 64);
1926 *samples++ = av_clip_int16(sample);
1927 c->status[channel].sample2 = c->status[channel].sample1;
1928 c->status[channel].sample1 = sample;
1933 case AV_CODEC_ID_ADPCM_ARGO:
1935 * The format of each block:
1936 * uint8_t left_control;
1937 * uint4_t left_samples[nb_samples];
1938 * ---- and if stereo ----
1939 * uint8_t right_control;
1940 * uint4_t right_samples[nb_samples];
1942 * Format of the control byte:
1943 * MSB [SSSSDRRR] LSB
1944 * S = (Shift Amount - 2)
1948 * Each block relies on the previous two samples of each channel.
1949 * They should be 0 initially.
1951 for (channel = 0; channel < avctx->channels; channel++) {
1954 samples = samples_p[channel];
1955 cs = c->status + channel;
1957 /* Get the control byte and decode the samples, 2 at a time. */
1958 control = bytestream2_get_byteu(&gb);
1959 shift = (control >> 4) + 2;
1961 for (n = 0; n < nb_samples / 2; n++) {
1962 int sample = bytestream2_get_byteu(&gb);
1963 *samples++ = adpcm_argo_expand_nibble(cs, sign_extend(sample >> 4, 4), control, shift);
1964 *samples++ = adpcm_argo_expand_nibble(cs, sign_extend(sample >> 0, 4), control, shift);
1968 case AV_CODEC_ID_ADPCM_ZORK:
1969 if (!c->has_status) {
1970 for (channel = 0; channel < avctx->channels; channel++) {
1971 c->status[channel].predictor = 0;
1972 c->status[channel].step_index = 0;
1976 for (n = 0; n < nb_samples * avctx->channels; n++) {
1977 int v = bytestream2_get_byteu(&gb);
1978 *samples++ = adpcm_zork_expand_nibble(&c->status[n % avctx->channels], v);
1981 case AV_CODEC_ID_ADPCM_IMA_MTF:
1982 for (n = nb_samples / 2; n > 0; n--) {
1983 for (channel = 0; channel < avctx->channels; channel++) {
1984 int v = bytestream2_get_byteu(&gb);
1985 *samples++ = adpcm_ima_mtf_expand_nibble(&c->status[channel], v >> 4);
1986 samples[st] = adpcm_ima_mtf_expand_nibble(&c->status[channel], v & 0x0F);
1988 samples += avctx->channels;
1992 av_assert0(0); // unsupported codec_id should not happen
1995 if (avpkt->size && bytestream2_tell(&gb) == 0) {
1996 av_log(avctx, AV_LOG_ERROR, "Nothing consumed\n");
1997 return AVERROR_INVALIDDATA;
2002 if (avpkt->size < bytestream2_tell(&gb)) {
2003 av_log(avctx, AV_LOG_ERROR, "Overread of %d < %d\n", avpkt->size, bytestream2_tell(&gb));
2007 return bytestream2_tell(&gb);
2010 static void adpcm_flush(AVCodecContext *avctx)
2012 ADPCMDecodeContext *c = avctx->priv_data;
2017 static const enum AVSampleFormat sample_fmts_s16[] = { AV_SAMPLE_FMT_S16,
2018 AV_SAMPLE_FMT_NONE };
2019 static const enum AVSampleFormat sample_fmts_s16p[] = { AV_SAMPLE_FMT_S16P,
2020 AV_SAMPLE_FMT_NONE };
2021 static const enum AVSampleFormat sample_fmts_both[] = { AV_SAMPLE_FMT_S16,
2023 AV_SAMPLE_FMT_NONE };
2025 #define ADPCM_DECODER(id_, sample_fmts_, name_, long_name_) \
2026 AVCodec ff_ ## name_ ## _decoder = { \
2028 .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
2029 .type = AVMEDIA_TYPE_AUDIO, \
2031 .priv_data_size = sizeof(ADPCMDecodeContext), \
2032 .init = adpcm_decode_init, \
2033 .decode = adpcm_decode_frame, \
2034 .flush = adpcm_flush, \
2035 .capabilities = AV_CODEC_CAP_DR1, \
2036 .sample_fmts = sample_fmts_, \
2039 /* Note: Do not forget to add new entries to the Makefile as well. */
2040 ADPCM_DECODER(AV_CODEC_ID_ADPCM_4XM, sample_fmts_s16p, adpcm_4xm, "ADPCM 4X Movie");
2041 ADPCM_DECODER(AV_CODEC_ID_ADPCM_AFC, sample_fmts_s16p, adpcm_afc, "ADPCM Nintendo Gamecube AFC");
2042 ADPCM_DECODER(AV_CODEC_ID_ADPCM_AGM, sample_fmts_s16, adpcm_agm, "ADPCM AmuseGraphics Movie");
2043 ADPCM_DECODER(AV_CODEC_ID_ADPCM_AICA, sample_fmts_s16p, adpcm_aica, "ADPCM Yamaha AICA");
2044 ADPCM_DECODER(AV_CODEC_ID_ADPCM_ARGO, sample_fmts_s16p, adpcm_argo, "ADPCM Argonaut Games");
2045 ADPCM_DECODER(AV_CODEC_ID_ADPCM_CT, sample_fmts_s16, adpcm_ct, "ADPCM Creative Technology");
2046 ADPCM_DECODER(AV_CODEC_ID_ADPCM_DTK, sample_fmts_s16p, adpcm_dtk, "ADPCM Nintendo Gamecube DTK");
2047 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA, sample_fmts_s16, adpcm_ea, "ADPCM Electronic Arts");
2048 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_MAXIS_XA, sample_fmts_s16, adpcm_ea_maxis_xa, "ADPCM Electronic Arts Maxis CDROM XA");
2049 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R1, sample_fmts_s16p, adpcm_ea_r1, "ADPCM Electronic Arts R1");
2050 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R2, sample_fmts_s16p, adpcm_ea_r2, "ADPCM Electronic Arts R2");
2051 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R3, sample_fmts_s16p, adpcm_ea_r3, "ADPCM Electronic Arts R3");
2052 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_XAS, sample_fmts_s16p, adpcm_ea_xas, "ADPCM Electronic Arts XAS");
2053 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_AMV, sample_fmts_s16, adpcm_ima_amv, "ADPCM IMA AMV");
2054 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_APC, sample_fmts_s16, adpcm_ima_apc, "ADPCM IMA CRYO APC");
2055 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_APM, sample_fmts_s16, adpcm_ima_apm, "ADPCM IMA Ubisoft APM");
2056 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DAT4, sample_fmts_s16, adpcm_ima_dat4, "ADPCM IMA Eurocom DAT4");
2057 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK3, sample_fmts_s16, adpcm_ima_dk3, "ADPCM IMA Duck DK3");
2058 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK4, sample_fmts_s16, adpcm_ima_dk4, "ADPCM IMA Duck DK4");
2059 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_EA_EACS, sample_fmts_s16, adpcm_ima_ea_eacs, "ADPCM IMA Electronic Arts EACS");
2060 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_EA_SEAD, sample_fmts_s16, adpcm_ima_ea_sead, "ADPCM IMA Electronic Arts SEAD");
2061 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_ISS, sample_fmts_s16, adpcm_ima_iss, "ADPCM IMA Funcom ISS");
2062 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_MTF, sample_fmts_s16, adpcm_ima_mtf, "ADPCM IMA Capcom's MT Framework");
2063 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_OKI, sample_fmts_s16, adpcm_ima_oki, "ADPCM IMA Dialogic OKI");
2064 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_QT, sample_fmts_s16p, adpcm_ima_qt, "ADPCM IMA QuickTime");
2065 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_RAD, sample_fmts_s16, adpcm_ima_rad, "ADPCM IMA Radical");
2066 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_SSI, sample_fmts_s16, adpcm_ima_ssi, "ADPCM IMA Simon & Schuster Interactive");
2067 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_SMJPEG, sample_fmts_s16, adpcm_ima_smjpeg, "ADPCM IMA Loki SDL MJPEG");
2068 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_ALP, sample_fmts_s16, adpcm_ima_alp, "ADPCM IMA High Voltage Software ALP");
2069 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WAV, sample_fmts_s16p, adpcm_ima_wav, "ADPCM IMA WAV");
2070 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WS, sample_fmts_both, adpcm_ima_ws, "ADPCM IMA Westwood");
2071 ADPCM_DECODER(AV_CODEC_ID_ADPCM_MS, sample_fmts_both, adpcm_ms, "ADPCM Microsoft");
2072 ADPCM_DECODER(AV_CODEC_ID_ADPCM_MTAF, sample_fmts_s16p, adpcm_mtaf, "ADPCM MTAF");
2073 ADPCM_DECODER(AV_CODEC_ID_ADPCM_PSX, sample_fmts_s16p, adpcm_psx, "ADPCM Playstation");
2074 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_2, sample_fmts_s16, adpcm_sbpro_2, "ADPCM Sound Blaster Pro 2-bit");
2075 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_3, sample_fmts_s16, adpcm_sbpro_3, "ADPCM Sound Blaster Pro 2.6-bit");
2076 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_4, sample_fmts_s16, adpcm_sbpro_4, "ADPCM Sound Blaster Pro 4-bit");
2077 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SWF, sample_fmts_s16, adpcm_swf, "ADPCM Shockwave Flash");
2078 ADPCM_DECODER(AV_CODEC_ID_ADPCM_THP_LE, sample_fmts_s16p, adpcm_thp_le, "ADPCM Nintendo THP (little-endian)");
2079 ADPCM_DECODER(AV_CODEC_ID_ADPCM_THP, sample_fmts_s16p, adpcm_thp, "ADPCM Nintendo THP");
2080 ADPCM_DECODER(AV_CODEC_ID_ADPCM_XA, sample_fmts_s16p, adpcm_xa, "ADPCM CDROM XA");
2081 ADPCM_DECODER(AV_CODEC_ID_ADPCM_YAMAHA, sample_fmts_s16, adpcm_yamaha, "ADPCM Yamaha");
2082 ADPCM_DECODER(AV_CODEC_ID_ADPCM_ZORK, sample_fmts_s16, adpcm_zork, "ADPCM Zork");