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)
16 * This file is part of FFmpeg.
18 * FFmpeg is free software; you can redistribute it and/or
19 * modify it under the terms of the GNU Lesser General Public
20 * License as published by the Free Software Foundation; either
21 * version 2.1 of the License, or (at your option) any later version.
23 * FFmpeg is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
26 * Lesser General Public License for more details.
28 * You should have received a copy of the GNU Lesser General Public
29 * License along with FFmpeg; if not, write to the Free Software
30 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
34 #include "bytestream.h"
36 #include "adpcm_data.h"
42 * Features and limitations:
44 * Reference documents:
45 * http://wiki.multimedia.cx/index.php?title=Category:ADPCM_Audio_Codecs
46 * http://www.pcisys.net/~melanson/codecs/simpleaudio.html [dead]
47 * http://www.geocities.com/SiliconValley/8682/aud3.txt [dead]
48 * http://openquicktime.sourceforge.net/
49 * XAnim sources (xa_codec.c) http://xanim.polter.net/
50 * http://www.cs.ucla.edu/~leec/mediabench/applications.html [dead]
51 * SoX source code http://sox.sourceforge.net/
54 * http://ku-www.ss.titech.ac.jp/~yatsushi/xaadpcm.html [dead]
55 * vagpack & depack http://homepages.compuserve.de/bITmASTER32/psx-index.html [dead]
56 * readstr http://www.geocities.co.jp/Playtown/2004/
59 /* These are for CD-ROM XA ADPCM */
60 static const int8_t xa_adpcm_table[5][2] = {
68 static const int16_t ea_adpcm_table[] = {
76 // padded to zero where table size is less then 16
77 static const int8_t swf_index_tables[4][16] = {
79 /*3*/ { -1, -1, 2, 4 },
80 /*4*/ { -1, -1, -1, -1, 2, 4, 6, 8 },
81 /*5*/ { -1, -1, -1, -1, -1, -1, -1, -1, 1, 2, 4, 6, 8, 10, 13, 16 }
86 typedef struct ADPCMDecodeContext {
87 ADPCMChannelStatus status[14];
88 int vqa_version; /**< VQA version. Used for ADPCM_IMA_WS */
92 static av_cold int adpcm_decode_init(AVCodecContext * avctx)
94 ADPCMDecodeContext *c = avctx->priv_data;
95 unsigned int min_channels = 1;
96 unsigned int max_channels = 2;
98 switch(avctx->codec->id) {
99 case AV_CODEC_ID_ADPCM_DTK:
100 case AV_CODEC_ID_ADPCM_EA:
103 case AV_CODEC_ID_ADPCM_AFC:
104 case AV_CODEC_ID_ADPCM_EA_R1:
105 case AV_CODEC_ID_ADPCM_EA_R2:
106 case AV_CODEC_ID_ADPCM_EA_R3:
107 case AV_CODEC_ID_ADPCM_EA_XAS:
108 case AV_CODEC_ID_ADPCM_MS:
111 case AV_CODEC_ID_ADPCM_MTAF:
114 if (avctx->channels & 1) {
115 avpriv_request_sample(avctx, "channel count %d\n", avctx->channels);
116 return AVERROR_PATCHWELCOME;
119 case AV_CODEC_ID_ADPCM_PSX:
122 case AV_CODEC_ID_ADPCM_IMA_DAT4:
123 case AV_CODEC_ID_ADPCM_THP:
124 case AV_CODEC_ID_ADPCM_THP_LE:
128 if (avctx->channels < min_channels || avctx->channels > max_channels) {
129 av_log(avctx, AV_LOG_ERROR, "Invalid number of channels\n");
130 return AVERROR(EINVAL);
133 switch(avctx->codec->id) {
134 case AV_CODEC_ID_ADPCM_CT:
135 c->status[0].step = c->status[1].step = 511;
137 case AV_CODEC_ID_ADPCM_IMA_WAV:
138 if (avctx->bits_per_coded_sample < 2 || avctx->bits_per_coded_sample > 5)
139 return AVERROR_INVALIDDATA;
141 case AV_CODEC_ID_ADPCM_IMA_APC:
142 if (avctx->extradata && avctx->extradata_size >= 8) {
143 c->status[0].predictor = AV_RL32(avctx->extradata);
144 c->status[1].predictor = AV_RL32(avctx->extradata + 4);
147 case AV_CODEC_ID_ADPCM_IMA_WS:
148 if (avctx->extradata && avctx->extradata_size >= 2)
149 c->vqa_version = AV_RL16(avctx->extradata);
155 switch(avctx->codec->id) {
156 case AV_CODEC_ID_ADPCM_AICA:
157 case AV_CODEC_ID_ADPCM_IMA_DAT4:
158 case AV_CODEC_ID_ADPCM_IMA_QT:
159 case AV_CODEC_ID_ADPCM_IMA_WAV:
160 case AV_CODEC_ID_ADPCM_4XM:
161 case AV_CODEC_ID_ADPCM_XA:
162 case AV_CODEC_ID_ADPCM_EA_R1:
163 case AV_CODEC_ID_ADPCM_EA_R2:
164 case AV_CODEC_ID_ADPCM_EA_R3:
165 case AV_CODEC_ID_ADPCM_EA_XAS:
166 case AV_CODEC_ID_ADPCM_THP:
167 case AV_CODEC_ID_ADPCM_THP_LE:
168 case AV_CODEC_ID_ADPCM_AFC:
169 case AV_CODEC_ID_ADPCM_DTK:
170 case AV_CODEC_ID_ADPCM_PSX:
171 case AV_CODEC_ID_ADPCM_MTAF:
172 avctx->sample_fmt = AV_SAMPLE_FMT_S16P;
174 case AV_CODEC_ID_ADPCM_IMA_WS:
175 avctx->sample_fmt = c->vqa_version == 3 ? AV_SAMPLE_FMT_S16P :
178 case AV_CODEC_ID_ADPCM_MS:
179 avctx->sample_fmt = avctx->channels > 2 ? AV_SAMPLE_FMT_S16P :
183 avctx->sample_fmt = AV_SAMPLE_FMT_S16;
189 static inline int16_t adpcm_agm_expand_nibble(ADPCMChannelStatus *c, int8_t nibble)
191 int delta, pred, step, add;
196 add = (delta * 2 + 1) * step;
200 if ((nibble & 8) == 0)
201 pred = av_clip(pred + (add >> 3), -32767, 32767);
203 pred = av_clip(pred - (add >> 3), -32767, 32767);
210 c->step = av_clip(c->step * 2, 127, 24576);
228 c->step = av_clip(c->step, 127, 24576);
233 static inline int16_t adpcm_ima_expand_nibble(ADPCMChannelStatus *c, int8_t nibble, int shift)
237 int sign, delta, diff, step;
239 step = ff_adpcm_step_table[c->step_index];
240 step_index = c->step_index + ff_adpcm_index_table[(unsigned)nibble];
241 step_index = av_clip(step_index, 0, 88);
245 /* perform direct multiplication instead of series of jumps proposed by
246 * the reference ADPCM implementation since modern CPUs can do the mults
248 diff = ((2 * delta + 1) * step) >> shift;
249 predictor = c->predictor;
250 if (sign) predictor -= diff;
251 else predictor += diff;
253 c->predictor = av_clip_int16(predictor);
254 c->step_index = step_index;
256 return (int16_t)c->predictor;
259 static inline int16_t adpcm_ima_wav_expand_nibble(ADPCMChannelStatus *c, GetBitContext *gb, int bps)
261 int nibble, step_index, predictor, sign, delta, diff, step, shift;
264 nibble = get_bits_le(gb, bps),
265 step = ff_adpcm_step_table[c->step_index];
266 step_index = c->step_index + ff_adpcm_index_tables[bps - 2][nibble];
267 step_index = av_clip(step_index, 0, 88);
269 sign = nibble & (1 << shift);
270 delta = av_mod_uintp2(nibble, shift);
271 diff = ((2 * delta + 1) * step) >> shift;
272 predictor = c->predictor;
273 if (sign) predictor -= diff;
274 else predictor += diff;
276 c->predictor = av_clip_int16(predictor);
277 c->step_index = step_index;
279 return (int16_t)c->predictor;
282 static inline int adpcm_ima_qt_expand_nibble(ADPCMChannelStatus *c, int nibble, int shift)
288 step = ff_adpcm_step_table[c->step_index];
289 step_index = c->step_index + ff_adpcm_index_table[nibble];
290 step_index = av_clip(step_index, 0, 88);
293 if (nibble & 4) diff += step;
294 if (nibble & 2) diff += step >> 1;
295 if (nibble & 1) diff += step >> 2;
298 predictor = c->predictor - diff;
300 predictor = c->predictor + diff;
302 c->predictor = av_clip_int16(predictor);
303 c->step_index = step_index;
308 static inline int16_t adpcm_ms_expand_nibble(ADPCMChannelStatus *c, int nibble)
312 predictor = (((c->sample1) * (c->coeff1)) + ((c->sample2) * (c->coeff2))) / 64;
313 predictor += ((nibble & 0x08)?(nibble - 0x10):(nibble)) * c->idelta;
315 c->sample2 = c->sample1;
316 c->sample1 = av_clip_int16(predictor);
317 c->idelta = (ff_adpcm_AdaptationTable[(int)nibble] * c->idelta) >> 8;
318 if (c->idelta < 16) c->idelta = 16;
319 if (c->idelta > INT_MAX/768) {
320 av_log(NULL, AV_LOG_WARNING, "idelta overflow\n");
321 c->idelta = INT_MAX/768;
327 static inline int16_t adpcm_ima_oki_expand_nibble(ADPCMChannelStatus *c, int nibble)
329 int step_index, predictor, sign, delta, diff, step;
331 step = ff_adpcm_oki_step_table[c->step_index];
332 step_index = c->step_index + ff_adpcm_index_table[(unsigned)nibble];
333 step_index = av_clip(step_index, 0, 48);
337 diff = ((2 * delta + 1) * step) >> 3;
338 predictor = c->predictor;
339 if (sign) predictor -= diff;
340 else predictor += diff;
342 c->predictor = av_clip_intp2(predictor, 11);
343 c->step_index = step_index;
345 return c->predictor << 4;
348 static inline int16_t adpcm_ct_expand_nibble(ADPCMChannelStatus *c, int8_t nibble)
350 int sign, delta, diff;
355 /* perform direct multiplication instead of series of jumps proposed by
356 * the reference ADPCM implementation since modern CPUs can do the mults
358 diff = ((2 * delta + 1) * c->step) >> 3;
359 /* predictor update is not so trivial: predictor is multiplied on 254/256 before updating */
360 c->predictor = ((c->predictor * 254) >> 8) + (sign ? -diff : diff);
361 c->predictor = av_clip_int16(c->predictor);
362 /* calculate new step and clamp it to range 511..32767 */
363 new_step = (ff_adpcm_AdaptationTable[nibble & 7] * c->step) >> 8;
364 c->step = av_clip(new_step, 511, 32767);
366 return (int16_t)c->predictor;
369 static inline int16_t adpcm_sbpro_expand_nibble(ADPCMChannelStatus *c, int8_t nibble, int size, int shift)
371 int sign, delta, diff;
373 sign = nibble & (1<<(size-1));
374 delta = nibble & ((1<<(size-1))-1);
375 diff = delta << (7 + c->step + shift);
378 c->predictor = av_clip(c->predictor + (sign ? -diff : diff), -16384,16256);
380 /* calculate new step */
381 if (delta >= (2*size - 3) && c->step < 3)
383 else if (delta == 0 && c->step > 0)
386 return (int16_t) c->predictor;
389 static inline int16_t adpcm_yamaha_expand_nibble(ADPCMChannelStatus *c, uint8_t nibble)
396 c->predictor += (c->step * ff_adpcm_yamaha_difflookup[nibble]) / 8;
397 c->predictor = av_clip_int16(c->predictor);
398 c->step = (c->step * ff_adpcm_yamaha_indexscale[nibble]) >> 8;
399 c->step = av_clip(c->step, 127, 24576);
403 static inline int16_t adpcm_mtaf_expand_nibble(ADPCMChannelStatus *c, uint8_t nibble)
405 c->predictor += ff_adpcm_mtaf_stepsize[c->step][nibble];
406 c->predictor = av_clip_int16(c->predictor);
407 c->step += ff_adpcm_index_table[nibble];
408 c->step = av_clip_uintp2(c->step, 5);
412 static int xa_decode(AVCodecContext *avctx, int16_t *out0, int16_t *out1,
413 const uint8_t *in, ADPCMChannelStatus *left,
414 ADPCMChannelStatus *right, int channels, int sample_offset)
417 int shift,filter,f0,f1;
421 out0 += sample_offset;
425 out1 += sample_offset;
428 shift = 12 - (in[4+i*2] & 15);
429 filter = in[4+i*2] >> 4;
430 if (filter >= FF_ARRAY_ELEMS(xa_adpcm_table)) {
431 avpriv_request_sample(avctx, "unknown XA-ADPCM filter %d", filter);
434 f0 = xa_adpcm_table[filter][0];
435 f1 = xa_adpcm_table[filter][1];
443 t = sign_extend(d, 4);
444 s = ( t<<shift ) + ((s_1*f0 + s_2*f1+32)>>6);
446 s_1 = av_clip_int16(s);
453 s_1 = right->sample1;
454 s_2 = right->sample2;
457 shift = 12 - (in[5+i*2] & 15);
458 filter = in[5+i*2] >> 4;
459 if (filter >= FF_ARRAY_ELEMS(xa_adpcm_table)) {
460 avpriv_request_sample(avctx, "unknown XA-ADPCM filter %d", filter);
464 f0 = xa_adpcm_table[filter][0];
465 f1 = xa_adpcm_table[filter][1];
470 t = sign_extend(d >> 4, 4);
471 s = ( t<<shift ) + ((s_1*f0 + s_2*f1+32)>>6);
473 s_1 = av_clip_int16(s);
478 right->sample1 = s_1;
479 right->sample2 = s_2;
485 out0 += 28 * (3 - channels);
486 out1 += 28 * (3 - channels);
492 static void adpcm_swf_decode(AVCodecContext *avctx, const uint8_t *buf, int buf_size, int16_t *samples)
494 ADPCMDecodeContext *c = avctx->priv_data;
497 int k0, signmask, nb_bits, count;
498 int size = buf_size*8;
501 init_get_bits(&gb, buf, size);
503 //read bits & initial values
504 nb_bits = get_bits(&gb, 2)+2;
505 table = swf_index_tables[nb_bits-2];
506 k0 = 1 << (nb_bits-2);
507 signmask = 1 << (nb_bits-1);
509 while (get_bits_count(&gb) <= size - 22*avctx->channels) {
510 for (i = 0; i < avctx->channels; i++) {
511 *samples++ = c->status[i].predictor = get_sbits(&gb, 16);
512 c->status[i].step_index = get_bits(&gb, 6);
515 for (count = 0; get_bits_count(&gb) <= size - nb_bits*avctx->channels && count < 4095; count++) {
518 for (i = 0; i < avctx->channels; i++) {
519 // similar to IMA adpcm
520 int delta = get_bits(&gb, nb_bits);
521 int step = ff_adpcm_step_table[c->status[i].step_index];
522 int vpdiff = 0; // vpdiff = (delta+0.5)*step/4
533 if (delta & signmask)
534 c->status[i].predictor -= vpdiff;
536 c->status[i].predictor += vpdiff;
538 c->status[i].step_index += table[delta & (~signmask)];
540 c->status[i].step_index = av_clip(c->status[i].step_index, 0, 88);
541 c->status[i].predictor = av_clip_int16(c->status[i].predictor);
543 *samples++ = c->status[i].predictor;
550 * Get the number of samples that will be decoded from the packet.
551 * In one case, this is actually the maximum number of samples possible to
552 * decode with the given buf_size.
554 * @param[out] coded_samples set to the number of samples as coded in the
555 * packet, or 0 if the codec does not encode the
556 * number of samples in each frame.
557 * @param[out] approx_nb_samples set to non-zero if the number of samples
558 * returned is an approximation.
560 static int get_nb_samples(AVCodecContext *avctx, GetByteContext *gb,
561 int buf_size, int *coded_samples, int *approx_nb_samples)
563 ADPCMDecodeContext *s = avctx->priv_data;
565 int ch = avctx->channels;
566 int has_coded_samples = 0;
570 *approx_nb_samples = 0;
575 switch (avctx->codec->id) {
576 /* constant, only check buf_size */
577 case AV_CODEC_ID_ADPCM_EA_XAS:
578 if (buf_size < 76 * ch)
582 case AV_CODEC_ID_ADPCM_IMA_QT:
583 if (buf_size < 34 * ch)
587 /* simple 4-bit adpcm */
588 case AV_CODEC_ID_ADPCM_CT:
589 case AV_CODEC_ID_ADPCM_IMA_APC:
590 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
591 case AV_CODEC_ID_ADPCM_IMA_OKI:
592 case AV_CODEC_ID_ADPCM_IMA_WS:
593 case AV_CODEC_ID_ADPCM_YAMAHA:
594 case AV_CODEC_ID_ADPCM_AICA:
595 nb_samples = buf_size * 2 / ch;
601 /* simple 4-bit adpcm, with header */
603 switch (avctx->codec->id) {
604 case AV_CODEC_ID_ADPCM_4XM:
605 case AV_CODEC_ID_ADPCM_AGM:
606 case AV_CODEC_ID_ADPCM_IMA_DAT4:
607 case AV_CODEC_ID_ADPCM_IMA_ISS: header_size = 4 * ch; break;
608 case AV_CODEC_ID_ADPCM_IMA_AMV: header_size = 8; break;
609 case AV_CODEC_ID_ADPCM_IMA_SMJPEG: header_size = 4 * ch; break;
612 return (buf_size - header_size) * 2 / ch;
614 /* more complex formats */
615 switch (avctx->codec->id) {
616 case AV_CODEC_ID_ADPCM_EA:
617 has_coded_samples = 1;
618 *coded_samples = bytestream2_get_le32(gb);
619 *coded_samples -= *coded_samples % 28;
620 nb_samples = (buf_size - 12) / 30 * 28;
622 case AV_CODEC_ID_ADPCM_IMA_EA_EACS:
623 has_coded_samples = 1;
624 *coded_samples = bytestream2_get_le32(gb);
625 nb_samples = (buf_size - (4 + 8 * ch)) * 2 / ch;
627 case AV_CODEC_ID_ADPCM_EA_MAXIS_XA:
628 nb_samples = (buf_size - ch) / ch * 2;
630 case AV_CODEC_ID_ADPCM_EA_R1:
631 case AV_CODEC_ID_ADPCM_EA_R2:
632 case AV_CODEC_ID_ADPCM_EA_R3:
633 /* maximum number of samples */
634 /* has internal offsets and a per-frame switch to signal raw 16-bit */
635 has_coded_samples = 1;
636 switch (avctx->codec->id) {
637 case AV_CODEC_ID_ADPCM_EA_R1:
638 header_size = 4 + 9 * ch;
639 *coded_samples = bytestream2_get_le32(gb);
641 case AV_CODEC_ID_ADPCM_EA_R2:
642 header_size = 4 + 5 * ch;
643 *coded_samples = bytestream2_get_le32(gb);
645 case AV_CODEC_ID_ADPCM_EA_R3:
646 header_size = 4 + 5 * ch;
647 *coded_samples = bytestream2_get_be32(gb);
650 *coded_samples -= *coded_samples % 28;
651 nb_samples = (buf_size - header_size) * 2 / ch;
652 nb_samples -= nb_samples % 28;
653 *approx_nb_samples = 1;
655 case AV_CODEC_ID_ADPCM_IMA_DK3:
656 if (avctx->block_align > 0)
657 buf_size = FFMIN(buf_size, avctx->block_align);
658 nb_samples = ((buf_size - 16) * 2 / 3 * 4) / ch;
660 case AV_CODEC_ID_ADPCM_IMA_DK4:
661 if (avctx->block_align > 0)
662 buf_size = FFMIN(buf_size, avctx->block_align);
663 if (buf_size < 4 * ch)
664 return AVERROR_INVALIDDATA;
665 nb_samples = 1 + (buf_size - 4 * ch) * 2 / ch;
667 case AV_CODEC_ID_ADPCM_IMA_RAD:
668 if (avctx->block_align > 0)
669 buf_size = FFMIN(buf_size, avctx->block_align);
670 nb_samples = (buf_size - 4 * ch) * 2 / ch;
672 case AV_CODEC_ID_ADPCM_IMA_WAV:
674 int bsize = ff_adpcm_ima_block_sizes[avctx->bits_per_coded_sample - 2];
675 int bsamples = ff_adpcm_ima_block_samples[avctx->bits_per_coded_sample - 2];
676 if (avctx->block_align > 0)
677 buf_size = FFMIN(buf_size, avctx->block_align);
678 if (buf_size < 4 * ch)
679 return AVERROR_INVALIDDATA;
680 nb_samples = 1 + (buf_size - 4 * ch) / (bsize * ch) * bsamples;
683 case AV_CODEC_ID_ADPCM_MS:
684 if (avctx->block_align > 0)
685 buf_size = FFMIN(buf_size, avctx->block_align);
686 nb_samples = (buf_size - 6 * ch) * 2 / ch;
688 case AV_CODEC_ID_ADPCM_MTAF:
689 if (avctx->block_align > 0)
690 buf_size = FFMIN(buf_size, avctx->block_align);
691 nb_samples = (buf_size - 16 * (ch / 2)) * 2 / ch;
693 case AV_CODEC_ID_ADPCM_SBPRO_2:
694 case AV_CODEC_ID_ADPCM_SBPRO_3:
695 case AV_CODEC_ID_ADPCM_SBPRO_4:
697 int samples_per_byte;
698 switch (avctx->codec->id) {
699 case AV_CODEC_ID_ADPCM_SBPRO_2: samples_per_byte = 4; break;
700 case AV_CODEC_ID_ADPCM_SBPRO_3: samples_per_byte = 3; break;
701 case AV_CODEC_ID_ADPCM_SBPRO_4: samples_per_byte = 2; break;
703 if (!s->status[0].step_index) {
705 return AVERROR_INVALIDDATA;
709 nb_samples += buf_size * samples_per_byte / ch;
712 case AV_CODEC_ID_ADPCM_SWF:
714 int buf_bits = buf_size * 8 - 2;
715 int nbits = (bytestream2_get_byte(gb) >> 6) + 2;
716 int block_hdr_size = 22 * ch;
717 int block_size = block_hdr_size + nbits * ch * 4095;
718 int nblocks = buf_bits / block_size;
719 int bits_left = buf_bits - nblocks * block_size;
720 nb_samples = nblocks * 4096;
721 if (bits_left >= block_hdr_size)
722 nb_samples += 1 + (bits_left - block_hdr_size) / (nbits * ch);
725 case AV_CODEC_ID_ADPCM_THP:
726 case AV_CODEC_ID_ADPCM_THP_LE:
727 if (avctx->extradata) {
728 nb_samples = buf_size * 14 / (8 * ch);
731 has_coded_samples = 1;
732 bytestream2_skip(gb, 4); // channel size
733 *coded_samples = (avctx->codec->id == AV_CODEC_ID_ADPCM_THP_LE) ?
734 bytestream2_get_le32(gb) :
735 bytestream2_get_be32(gb);
736 buf_size -= 8 + 36 * ch;
738 nb_samples = buf_size / 8 * 14;
739 if (buf_size % 8 > 1)
740 nb_samples += (buf_size % 8 - 1) * 2;
741 *approx_nb_samples = 1;
743 case AV_CODEC_ID_ADPCM_AFC:
744 nb_samples = buf_size / (9 * ch) * 16;
746 case AV_CODEC_ID_ADPCM_XA:
747 nb_samples = (buf_size / 128) * 224 / ch;
749 case AV_CODEC_ID_ADPCM_DTK:
750 case AV_CODEC_ID_ADPCM_PSX:
751 nb_samples = buf_size / (16 * ch) * 28;
755 /* validate coded sample count */
756 if (has_coded_samples && (*coded_samples <= 0 || *coded_samples > nb_samples))
757 return AVERROR_INVALIDDATA;
762 static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
763 int *got_frame_ptr, AVPacket *avpkt)
765 AVFrame *frame = data;
766 const uint8_t *buf = avpkt->data;
767 int buf_size = avpkt->size;
768 ADPCMDecodeContext *c = avctx->priv_data;
769 ADPCMChannelStatus *cs;
770 int n, m, channel, i;
775 int nb_samples, coded_samples, approx_nb_samples, ret;
778 bytestream2_init(&gb, buf, buf_size);
779 nb_samples = get_nb_samples(avctx, &gb, buf_size, &coded_samples, &approx_nb_samples);
780 if (nb_samples <= 0) {
781 av_log(avctx, AV_LOG_ERROR, "invalid number of samples in packet\n");
782 return AVERROR_INVALIDDATA;
785 /* get output buffer */
786 frame->nb_samples = nb_samples;
787 if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
789 samples = (int16_t *)frame->data[0];
790 samples_p = (int16_t **)frame->extended_data;
792 /* use coded_samples when applicable */
793 /* it is always <= nb_samples, so the output buffer will be large enough */
795 if (!approx_nb_samples && coded_samples != nb_samples)
796 av_log(avctx, AV_LOG_WARNING, "mismatch in coded sample count\n");
797 frame->nb_samples = nb_samples = coded_samples;
800 st = avctx->channels == 2 ? 1 : 0;
802 switch(avctx->codec->id) {
803 case AV_CODEC_ID_ADPCM_IMA_QT:
804 /* In QuickTime, IMA is encoded by chunks of 34 bytes (=64 samples).
805 Channel data is interleaved per-chunk. */
806 for (channel = 0; channel < avctx->channels; channel++) {
809 cs = &(c->status[channel]);
810 /* (pppppp) (piiiiiii) */
812 /* Bits 15-7 are the _top_ 9 bits of the 16-bit initial predictor value */
813 predictor = sign_extend(bytestream2_get_be16u(&gb), 16);
814 step_index = predictor & 0x7F;
817 if (cs->step_index == step_index) {
818 int diff = predictor - cs->predictor;
825 cs->step_index = step_index;
826 cs->predictor = predictor;
829 if (cs->step_index > 88u){
830 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
831 channel, cs->step_index);
832 return AVERROR_INVALIDDATA;
835 samples = samples_p[channel];
837 for (m = 0; m < 64; m += 2) {
838 int byte = bytestream2_get_byteu(&gb);
839 samples[m ] = adpcm_ima_qt_expand_nibble(cs, byte & 0x0F, 3);
840 samples[m + 1] = adpcm_ima_qt_expand_nibble(cs, byte >> 4 , 3);
844 case AV_CODEC_ID_ADPCM_IMA_WAV:
845 for(i=0; i<avctx->channels; i++){
846 cs = &(c->status[i]);
847 cs->predictor = samples_p[i][0] = sign_extend(bytestream2_get_le16u(&gb), 16);
849 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
850 if (cs->step_index > 88u){
851 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
853 return AVERROR_INVALIDDATA;
857 if (avctx->bits_per_coded_sample != 4) {
858 int samples_per_block = ff_adpcm_ima_block_samples[avctx->bits_per_coded_sample - 2];
859 int block_size = ff_adpcm_ima_block_sizes[avctx->bits_per_coded_sample - 2];
860 uint8_t temp[20 + AV_INPUT_BUFFER_PADDING_SIZE] = { 0 };
863 for (n = 0; n < (nb_samples - 1) / samples_per_block; n++) {
864 for (i = 0; i < avctx->channels; i++) {
868 samples = &samples_p[i][1 + n * samples_per_block];
869 for (j = 0; j < block_size; j++) {
870 temp[j] = buf[4 * avctx->channels + block_size * n * avctx->channels +
871 (j % 4) + (j / 4) * (avctx->channels * 4) + i * 4];
873 ret = init_get_bits8(&g, (const uint8_t *)&temp, block_size);
876 for (m = 0; m < samples_per_block; m++) {
877 samples[m] = adpcm_ima_wav_expand_nibble(cs, &g,
878 avctx->bits_per_coded_sample);
882 bytestream2_skip(&gb, avctx->block_align - avctx->channels * 4);
884 for (n = 0; n < (nb_samples - 1) / 8; n++) {
885 for (i = 0; i < avctx->channels; i++) {
887 samples = &samples_p[i][1 + n * 8];
888 for (m = 0; m < 8; m += 2) {
889 int v = bytestream2_get_byteu(&gb);
890 samples[m ] = adpcm_ima_expand_nibble(cs, v & 0x0F, 3);
891 samples[m + 1] = adpcm_ima_expand_nibble(cs, v >> 4 , 3);
897 case AV_CODEC_ID_ADPCM_4XM:
898 for (i = 0; i < avctx->channels; i++)
899 c->status[i].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
901 for (i = 0; i < avctx->channels; i++) {
902 c->status[i].step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
903 if (c->status[i].step_index > 88u) {
904 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
905 i, c->status[i].step_index);
906 return AVERROR_INVALIDDATA;
910 for (i = 0; i < avctx->channels; i++) {
911 samples = (int16_t *)frame->data[i];
913 for (n = nb_samples >> 1; n > 0; n--) {
914 int v = bytestream2_get_byteu(&gb);
915 *samples++ = adpcm_ima_expand_nibble(cs, v & 0x0F, 4);
916 *samples++ = adpcm_ima_expand_nibble(cs, v >> 4 , 4);
920 case AV_CODEC_ID_ADPCM_AGM:
921 for (i = 0; i < avctx->channels; i++)
922 c->status[i].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
923 for (i = 0; i < avctx->channels; i++)
924 c->status[i].step = sign_extend(bytestream2_get_le16u(&gb), 16);
926 for (n = 0; n < nb_samples >> (1 - st); n++) {
927 int v = bytestream2_get_byteu(&gb);
928 *samples++ = adpcm_agm_expand_nibble(&c->status[0], v & 0xF);
929 *samples++ = adpcm_agm_expand_nibble(&c->status[st], v >> 4 );
932 case AV_CODEC_ID_ADPCM_MS:
936 if (avctx->channels > 2) {
937 for (channel = 0; channel < avctx->channels; channel++) {
938 samples = samples_p[channel];
939 block_predictor = bytestream2_get_byteu(&gb);
940 if (block_predictor > 6) {
941 av_log(avctx, AV_LOG_ERROR, "ERROR: block_predictor[%d] = %d\n",
942 channel, block_predictor);
943 return AVERROR_INVALIDDATA;
945 c->status[channel].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
946 c->status[channel].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
947 c->status[channel].idelta = sign_extend(bytestream2_get_le16u(&gb), 16);
948 c->status[channel].sample1 = sign_extend(bytestream2_get_le16u(&gb), 16);
949 c->status[channel].sample2 = sign_extend(bytestream2_get_le16u(&gb), 16);
950 *samples++ = c->status[channel].sample2;
951 *samples++ = c->status[channel].sample1;
952 for(n = (nb_samples - 2) >> 1; n > 0; n--) {
953 int byte = bytestream2_get_byteu(&gb);
954 *samples++ = adpcm_ms_expand_nibble(&c->status[channel], byte >> 4 );
955 *samples++ = adpcm_ms_expand_nibble(&c->status[channel], byte & 0x0F);
959 block_predictor = bytestream2_get_byteu(&gb);
960 if (block_predictor > 6) {
961 av_log(avctx, AV_LOG_ERROR, "ERROR: block_predictor[0] = %d\n",
963 return AVERROR_INVALIDDATA;
965 c->status[0].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
966 c->status[0].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
968 block_predictor = bytestream2_get_byteu(&gb);
969 if (block_predictor > 6) {
970 av_log(avctx, AV_LOG_ERROR, "ERROR: block_predictor[1] = %d\n",
972 return AVERROR_INVALIDDATA;
974 c->status[1].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
975 c->status[1].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
977 c->status[0].idelta = sign_extend(bytestream2_get_le16u(&gb), 16);
979 c->status[1].idelta = sign_extend(bytestream2_get_le16u(&gb), 16);
982 c->status[0].sample1 = sign_extend(bytestream2_get_le16u(&gb), 16);
983 if (st) c->status[1].sample1 = sign_extend(bytestream2_get_le16u(&gb), 16);
984 c->status[0].sample2 = sign_extend(bytestream2_get_le16u(&gb), 16);
985 if (st) c->status[1].sample2 = sign_extend(bytestream2_get_le16u(&gb), 16);
987 *samples++ = c->status[0].sample2;
988 if (st) *samples++ = c->status[1].sample2;
989 *samples++ = c->status[0].sample1;
990 if (st) *samples++ = c->status[1].sample1;
991 for(n = (nb_samples - 2) >> (1 - st); n > 0; n--) {
992 int byte = bytestream2_get_byteu(&gb);
993 *samples++ = adpcm_ms_expand_nibble(&c->status[0 ], byte >> 4 );
994 *samples++ = adpcm_ms_expand_nibble(&c->status[st], byte & 0x0F);
999 case AV_CODEC_ID_ADPCM_MTAF:
1000 for (channel = 0; channel < avctx->channels; channel+=2) {
1001 bytestream2_skipu(&gb, 4);
1002 c->status[channel ].step = bytestream2_get_le16u(&gb) & 0x1f;
1003 c->status[channel + 1].step = bytestream2_get_le16u(&gb) & 0x1f;
1004 c->status[channel ].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1005 bytestream2_skipu(&gb, 2);
1006 c->status[channel + 1].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1007 bytestream2_skipu(&gb, 2);
1008 for (n = 0; n < nb_samples; n+=2) {
1009 int v = bytestream2_get_byteu(&gb);
1010 samples_p[channel][n ] = adpcm_mtaf_expand_nibble(&c->status[channel], v & 0x0F);
1011 samples_p[channel][n + 1] = adpcm_mtaf_expand_nibble(&c->status[channel], v >> 4 );
1013 for (n = 0; n < nb_samples; n+=2) {
1014 int v = bytestream2_get_byteu(&gb);
1015 samples_p[channel + 1][n ] = adpcm_mtaf_expand_nibble(&c->status[channel + 1], v & 0x0F);
1016 samples_p[channel + 1][n + 1] = adpcm_mtaf_expand_nibble(&c->status[channel + 1], v >> 4 );
1020 case AV_CODEC_ID_ADPCM_IMA_DK4:
1021 for (channel = 0; channel < avctx->channels; channel++) {
1022 cs = &c->status[channel];
1023 cs->predictor = *samples++ = sign_extend(bytestream2_get_le16u(&gb), 16);
1024 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
1025 if (cs->step_index > 88u){
1026 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1027 channel, cs->step_index);
1028 return AVERROR_INVALIDDATA;
1031 for (n = (nb_samples - 1) >> (1 - st); n > 0; n--) {
1032 int v = bytestream2_get_byteu(&gb);
1033 *samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v >> 4 , 3);
1034 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
1037 case AV_CODEC_ID_ADPCM_IMA_DK3:
1041 int decode_top_nibble_next = 0;
1043 const int16_t *samples_end = samples + avctx->channels * nb_samples;
1045 bytestream2_skipu(&gb, 10);
1046 c->status[0].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1047 c->status[1].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1048 c->status[0].step_index = bytestream2_get_byteu(&gb);
1049 c->status[1].step_index = bytestream2_get_byteu(&gb);
1050 if (c->status[0].step_index > 88u || c->status[1].step_index > 88u){
1051 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i/%i\n",
1052 c->status[0].step_index, c->status[1].step_index);
1053 return AVERROR_INVALIDDATA;
1055 /* sign extend the predictors */
1056 diff_channel = c->status[1].predictor;
1058 /* DK3 ADPCM support macro */
1059 #define DK3_GET_NEXT_NIBBLE() \
1060 if (decode_top_nibble_next) { \
1061 nibble = last_byte >> 4; \
1062 decode_top_nibble_next = 0; \
1064 last_byte = bytestream2_get_byteu(&gb); \
1065 nibble = last_byte & 0x0F; \
1066 decode_top_nibble_next = 1; \
1069 while (samples < samples_end) {
1071 /* for this algorithm, c->status[0] is the sum channel and
1072 * c->status[1] is the diff channel */
1074 /* process the first predictor of the sum channel */
1075 DK3_GET_NEXT_NIBBLE();
1076 adpcm_ima_expand_nibble(&c->status[0], nibble, 3);
1078 /* process the diff channel predictor */
1079 DK3_GET_NEXT_NIBBLE();
1080 adpcm_ima_expand_nibble(&c->status[1], nibble, 3);
1082 /* process the first pair of stereo PCM samples */
1083 diff_channel = (diff_channel + c->status[1].predictor) / 2;
1084 *samples++ = c->status[0].predictor + c->status[1].predictor;
1085 *samples++ = c->status[0].predictor - c->status[1].predictor;
1087 /* process the second predictor of the sum channel */
1088 DK3_GET_NEXT_NIBBLE();
1089 adpcm_ima_expand_nibble(&c->status[0], nibble, 3);
1091 /* process the second pair of stereo PCM samples */
1092 diff_channel = (diff_channel + c->status[1].predictor) / 2;
1093 *samples++ = c->status[0].predictor + c->status[1].predictor;
1094 *samples++ = c->status[0].predictor - c->status[1].predictor;
1097 if ((bytestream2_tell(&gb) & 1))
1098 bytestream2_skip(&gb, 1);
1101 case AV_CODEC_ID_ADPCM_IMA_ISS:
1102 for (channel = 0; channel < avctx->channels; channel++) {
1103 cs = &c->status[channel];
1104 cs->predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1105 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
1106 if (cs->step_index > 88u){
1107 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1108 channel, cs->step_index);
1109 return AVERROR_INVALIDDATA;
1113 for (n = nb_samples >> (1 - st); n > 0; n--) {
1115 int v = bytestream2_get_byteu(&gb);
1116 /* nibbles are swapped for mono */
1124 *samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v1, 3);
1125 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v2, 3);
1128 case AV_CODEC_ID_ADPCM_IMA_DAT4:
1129 for (channel = 0; channel < avctx->channels; channel++) {
1130 cs = &c->status[channel];
1131 samples = samples_p[channel];
1132 bytestream2_skip(&gb, 4);
1133 for (n = 0; n < nb_samples; n += 2) {
1134 int v = bytestream2_get_byteu(&gb);
1135 *samples++ = adpcm_ima_expand_nibble(cs, v >> 4 , 3);
1136 *samples++ = adpcm_ima_expand_nibble(cs, v & 0x0F, 3);
1140 case AV_CODEC_ID_ADPCM_IMA_APC:
1141 while (bytestream2_get_bytes_left(&gb) > 0) {
1142 int v = bytestream2_get_byteu(&gb);
1143 *samples++ = adpcm_ima_expand_nibble(&c->status[0], v >> 4 , 3);
1144 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
1147 case AV_CODEC_ID_ADPCM_IMA_OKI:
1148 while (bytestream2_get_bytes_left(&gb) > 0) {
1149 int v = bytestream2_get_byteu(&gb);
1150 *samples++ = adpcm_ima_oki_expand_nibble(&c->status[0], v >> 4 );
1151 *samples++ = adpcm_ima_oki_expand_nibble(&c->status[st], v & 0x0F);
1154 case AV_CODEC_ID_ADPCM_IMA_RAD:
1155 for (channel = 0; channel < avctx->channels; channel++) {
1156 cs = &c->status[channel];
1157 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
1158 cs->predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1159 if (cs->step_index > 88u){
1160 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1161 channel, cs->step_index);
1162 return AVERROR_INVALIDDATA;
1165 for (n = 0; n < nb_samples / 2; n++) {
1168 byte[0] = bytestream2_get_byteu(&gb);
1170 byte[1] = bytestream2_get_byteu(&gb);
1171 for(channel = 0; channel < avctx->channels; channel++) {
1172 *samples++ = adpcm_ima_expand_nibble(&c->status[channel], byte[channel] & 0x0F, 3);
1174 for(channel = 0; channel < avctx->channels; channel++) {
1175 *samples++ = adpcm_ima_expand_nibble(&c->status[channel], byte[channel] >> 4 , 3);
1179 case AV_CODEC_ID_ADPCM_IMA_WS:
1180 if (c->vqa_version == 3) {
1181 for (channel = 0; channel < avctx->channels; channel++) {
1182 int16_t *smp = samples_p[channel];
1184 for (n = nb_samples / 2; n > 0; n--) {
1185 int v = bytestream2_get_byteu(&gb);
1186 *smp++ = adpcm_ima_expand_nibble(&c->status[channel], v >> 4 , 3);
1187 *smp++ = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
1191 for (n = nb_samples / 2; n > 0; n--) {
1192 for (channel = 0; channel < avctx->channels; channel++) {
1193 int v = bytestream2_get_byteu(&gb);
1194 *samples++ = adpcm_ima_expand_nibble(&c->status[channel], v >> 4 , 3);
1195 samples[st] = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
1197 samples += avctx->channels;
1200 bytestream2_seek(&gb, 0, SEEK_END);
1202 case AV_CODEC_ID_ADPCM_XA:
1204 int16_t *out0 = samples_p[0];
1205 int16_t *out1 = samples_p[1];
1206 int samples_per_block = 28 * (3 - avctx->channels) * 4;
1207 int sample_offset = 0;
1208 int bytes_remaining;
1209 while (bytestream2_get_bytes_left(&gb) >= 128) {
1210 if ((ret = xa_decode(avctx, out0, out1, buf + bytestream2_tell(&gb),
1211 &c->status[0], &c->status[1],
1212 avctx->channels, sample_offset)) < 0)
1214 bytestream2_skipu(&gb, 128);
1215 sample_offset += samples_per_block;
1217 /* Less than a full block of data left, e.g. when reading from
1218 * 2324 byte per sector XA; the remainder is padding */
1219 bytes_remaining = bytestream2_get_bytes_left(&gb);
1220 if (bytes_remaining > 0) {
1221 bytestream2_skip(&gb, bytes_remaining);
1225 case AV_CODEC_ID_ADPCM_IMA_EA_EACS:
1226 for (i=0; i<=st; i++) {
1227 c->status[i].step_index = bytestream2_get_le32u(&gb);
1228 if (c->status[i].step_index > 88u) {
1229 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1230 i, c->status[i].step_index);
1231 return AVERROR_INVALIDDATA;
1234 for (i=0; i<=st; i++) {
1235 c->status[i].predictor = bytestream2_get_le32u(&gb);
1236 if (FFABS(c->status[i].predictor) > (1<<16))
1237 return AVERROR_INVALIDDATA;
1240 for (n = nb_samples >> (1 - st); n > 0; n--) {
1241 int byte = bytestream2_get_byteu(&gb);
1242 *samples++ = adpcm_ima_expand_nibble(&c->status[0], byte >> 4, 3);
1243 *samples++ = adpcm_ima_expand_nibble(&c->status[st], byte & 0x0F, 3);
1246 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
1247 for (n = nb_samples >> (1 - st); n > 0; n--) {
1248 int byte = bytestream2_get_byteu(&gb);
1249 *samples++ = adpcm_ima_expand_nibble(&c->status[0], byte >> 4, 6);
1250 *samples++ = adpcm_ima_expand_nibble(&c->status[st], byte & 0x0F, 6);
1253 case AV_CODEC_ID_ADPCM_EA:
1255 int previous_left_sample, previous_right_sample;
1256 int current_left_sample, current_right_sample;
1257 int next_left_sample, next_right_sample;
1258 int coeff1l, coeff2l, coeff1r, coeff2r;
1259 int shift_left, shift_right;
1261 /* Each EA ADPCM frame has a 12-byte header followed by 30-byte pieces,
1262 each coding 28 stereo samples. */
1264 if(avctx->channels != 2)
1265 return AVERROR_INVALIDDATA;
1267 current_left_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
1268 previous_left_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
1269 current_right_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
1270 previous_right_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
1272 for (count1 = 0; count1 < nb_samples / 28; count1++) {
1273 int byte = bytestream2_get_byteu(&gb);
1274 coeff1l = ea_adpcm_table[ byte >> 4 ];
1275 coeff2l = ea_adpcm_table[(byte >> 4 ) + 4];
1276 coeff1r = ea_adpcm_table[ byte & 0x0F];
1277 coeff2r = ea_adpcm_table[(byte & 0x0F) + 4];
1279 byte = bytestream2_get_byteu(&gb);
1280 shift_left = 20 - (byte >> 4);
1281 shift_right = 20 - (byte & 0x0F);
1283 for (count2 = 0; count2 < 28; count2++) {
1284 byte = bytestream2_get_byteu(&gb);
1285 next_left_sample = sign_extend(byte >> 4, 4) << shift_left;
1286 next_right_sample = sign_extend(byte, 4) << shift_right;
1288 next_left_sample = (next_left_sample +
1289 (current_left_sample * coeff1l) +
1290 (previous_left_sample * coeff2l) + 0x80) >> 8;
1291 next_right_sample = (next_right_sample +
1292 (current_right_sample * coeff1r) +
1293 (previous_right_sample * coeff2r) + 0x80) >> 8;
1295 previous_left_sample = current_left_sample;
1296 current_left_sample = av_clip_int16(next_left_sample);
1297 previous_right_sample = current_right_sample;
1298 current_right_sample = av_clip_int16(next_right_sample);
1299 *samples++ = current_left_sample;
1300 *samples++ = current_right_sample;
1304 bytestream2_skip(&gb, 2); // Skip terminating 0x0000
1308 case AV_CODEC_ID_ADPCM_EA_MAXIS_XA:
1310 int coeff[2][2], shift[2];
1312 for(channel = 0; channel < avctx->channels; channel++) {
1313 int byte = bytestream2_get_byteu(&gb);
1315 coeff[channel][i] = ea_adpcm_table[(byte >> 4) + 4*i];
1316 shift[channel] = 20 - (byte & 0x0F);
1318 for (count1 = 0; count1 < nb_samples / 2; count1++) {
1321 byte[0] = bytestream2_get_byteu(&gb);
1322 if (st) byte[1] = bytestream2_get_byteu(&gb);
1323 for(i = 4; i >= 0; i-=4) { /* Pairwise samples LL RR (st) or LL LL (mono) */
1324 for(channel = 0; channel < avctx->channels; channel++) {
1325 int sample = sign_extend(byte[channel] >> i, 4) << shift[channel];
1327 c->status[channel].sample1 * coeff[channel][0] +
1328 c->status[channel].sample2 * coeff[channel][1] + 0x80) >> 8;
1329 c->status[channel].sample2 = c->status[channel].sample1;
1330 c->status[channel].sample1 = av_clip_int16(sample);
1331 *samples++ = c->status[channel].sample1;
1335 bytestream2_seek(&gb, 0, SEEK_END);
1338 case AV_CODEC_ID_ADPCM_EA_R1:
1339 case AV_CODEC_ID_ADPCM_EA_R2:
1340 case AV_CODEC_ID_ADPCM_EA_R3: {
1341 /* channel numbering
1343 4chan: 0=fl, 1=rl, 2=fr, 3=rr
1344 6chan: 0=fl, 1=c, 2=fr, 3=rl, 4=rr, 5=sub */
1345 const int big_endian = avctx->codec->id == AV_CODEC_ID_ADPCM_EA_R3;
1346 int previous_sample, current_sample, next_sample;
1349 unsigned int channel;
1354 for (channel=0; channel<avctx->channels; channel++)
1355 offsets[channel] = (big_endian ? bytestream2_get_be32(&gb) :
1356 bytestream2_get_le32(&gb)) +
1357 (avctx->channels + 1) * 4;
1359 for (channel=0; channel<avctx->channels; channel++) {
1360 bytestream2_seek(&gb, offsets[channel], SEEK_SET);
1361 samplesC = samples_p[channel];
1363 if (avctx->codec->id == AV_CODEC_ID_ADPCM_EA_R1) {
1364 current_sample = sign_extend(bytestream2_get_le16(&gb), 16);
1365 previous_sample = sign_extend(bytestream2_get_le16(&gb), 16);
1367 current_sample = c->status[channel].predictor;
1368 previous_sample = c->status[channel].prev_sample;
1371 for (count1 = 0; count1 < nb_samples / 28; count1++) {
1372 int byte = bytestream2_get_byte(&gb);
1373 if (byte == 0xEE) { /* only seen in R2 and R3 */
1374 current_sample = sign_extend(bytestream2_get_be16(&gb), 16);
1375 previous_sample = sign_extend(bytestream2_get_be16(&gb), 16);
1377 for (count2=0; count2<28; count2++)
1378 *samplesC++ = sign_extend(bytestream2_get_be16(&gb), 16);
1380 coeff1 = ea_adpcm_table[ byte >> 4 ];
1381 coeff2 = ea_adpcm_table[(byte >> 4) + 4];
1382 shift = 20 - (byte & 0x0F);
1384 for (count2=0; count2<28; count2++) {
1386 next_sample = (unsigned)sign_extend(byte, 4) << shift;
1388 byte = bytestream2_get_byte(&gb);
1389 next_sample = (unsigned)sign_extend(byte >> 4, 4) << shift;
1392 next_sample += (current_sample * coeff1) +
1393 (previous_sample * coeff2);
1394 next_sample = av_clip_int16(next_sample >> 8);
1396 previous_sample = current_sample;
1397 current_sample = next_sample;
1398 *samplesC++ = current_sample;
1404 } else if (count != count1) {
1405 av_log(avctx, AV_LOG_WARNING, "per-channel sample count mismatch\n");
1406 count = FFMAX(count, count1);
1409 if (avctx->codec->id != AV_CODEC_ID_ADPCM_EA_R1) {
1410 c->status[channel].predictor = current_sample;
1411 c->status[channel].prev_sample = previous_sample;
1415 frame->nb_samples = count * 28;
1416 bytestream2_seek(&gb, 0, SEEK_END);
1419 case AV_CODEC_ID_ADPCM_EA_XAS:
1420 for (channel=0; channel<avctx->channels; channel++) {
1421 int coeff[2][4], shift[4];
1422 int16_t *s = samples_p[channel];
1423 for (n = 0; n < 4; n++, s += 32) {
1424 int val = sign_extend(bytestream2_get_le16u(&gb), 16);
1426 coeff[i][n] = ea_adpcm_table[(val&0x0F)+4*i];
1429 val = sign_extend(bytestream2_get_le16u(&gb), 16);
1430 shift[n] = 20 - (val & 0x0F);
1434 for (m=2; m<32; m+=2) {
1435 s = &samples_p[channel][m];
1436 for (n = 0; n < 4; n++, s += 32) {
1438 int byte = bytestream2_get_byteu(&gb);
1440 level = sign_extend(byte >> 4, 4) << shift[n];
1441 pred = s[-1] * coeff[0][n] + s[-2] * coeff[1][n];
1442 s[0] = av_clip_int16((level + pred + 0x80) >> 8);
1444 level = sign_extend(byte, 4) << shift[n];
1445 pred = s[0] * coeff[0][n] + s[-1] * coeff[1][n];
1446 s[1] = av_clip_int16((level + pred + 0x80) >> 8);
1451 case AV_CODEC_ID_ADPCM_IMA_AMV:
1452 c->status[0].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1453 c->status[0].step_index = bytestream2_get_byteu(&gb);
1454 bytestream2_skipu(&gb, 5);
1455 if (c->status[0].step_index > 88u) {
1456 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i\n",
1457 c->status[0].step_index);
1458 return AVERROR_INVALIDDATA;
1461 for (n = nb_samples >> (1 - st); n > 0; n--) {
1462 int v = bytestream2_get_byteu(&gb);
1464 *samples++ = adpcm_ima_expand_nibble(&c->status[0], v >> 4, 3);
1465 *samples++ = adpcm_ima_expand_nibble(&c->status[0], v & 0xf, 3);
1468 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
1469 for (i = 0; i < avctx->channels; i++) {
1470 c->status[i].predictor = sign_extend(bytestream2_get_be16u(&gb), 16);
1471 c->status[i].step_index = bytestream2_get_byteu(&gb);
1472 bytestream2_skipu(&gb, 1);
1473 if (c->status[i].step_index > 88u) {
1474 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i\n",
1475 c->status[i].step_index);
1476 return AVERROR_INVALIDDATA;
1480 for (n = nb_samples >> (1 - st); n > 0; n--) {
1481 int v = bytestream2_get_byteu(&gb);
1483 *samples++ = adpcm_ima_qt_expand_nibble(&c->status[0 ], v >> 4, 3);
1484 *samples++ = adpcm_ima_qt_expand_nibble(&c->status[st], v & 0xf, 3);
1487 case AV_CODEC_ID_ADPCM_CT:
1488 for (n = nb_samples >> (1 - st); n > 0; n--) {
1489 int v = bytestream2_get_byteu(&gb);
1490 *samples++ = adpcm_ct_expand_nibble(&c->status[0 ], v >> 4 );
1491 *samples++ = adpcm_ct_expand_nibble(&c->status[st], v & 0x0F);
1494 case AV_CODEC_ID_ADPCM_SBPRO_4:
1495 case AV_CODEC_ID_ADPCM_SBPRO_3:
1496 case AV_CODEC_ID_ADPCM_SBPRO_2:
1497 if (!c->status[0].step_index) {
1498 /* the first byte is a raw sample */
1499 *samples++ = 128 * (bytestream2_get_byteu(&gb) - 0x80);
1501 *samples++ = 128 * (bytestream2_get_byteu(&gb) - 0x80);
1502 c->status[0].step_index = 1;
1505 if (avctx->codec->id == AV_CODEC_ID_ADPCM_SBPRO_4) {
1506 for (n = nb_samples >> (1 - st); n > 0; n--) {
1507 int byte = bytestream2_get_byteu(&gb);
1508 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1510 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1513 } else if (avctx->codec->id == AV_CODEC_ID_ADPCM_SBPRO_3) {
1514 for (n = (nb_samples<<st) / 3; n > 0; n--) {
1515 int byte = bytestream2_get_byteu(&gb);
1516 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1518 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1519 (byte >> 2) & 0x07, 3, 0);
1520 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1524 for (n = nb_samples >> (2 - st); n > 0; n--) {
1525 int byte = bytestream2_get_byteu(&gb);
1526 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1528 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1529 (byte >> 4) & 0x03, 2, 2);
1530 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1531 (byte >> 2) & 0x03, 2, 2);
1532 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1537 case AV_CODEC_ID_ADPCM_SWF:
1538 adpcm_swf_decode(avctx, buf, buf_size, samples);
1539 bytestream2_seek(&gb, 0, SEEK_END);
1541 case AV_CODEC_ID_ADPCM_YAMAHA:
1542 for (n = nb_samples >> (1 - st); n > 0; n--) {
1543 int v = bytestream2_get_byteu(&gb);
1544 *samples++ = adpcm_yamaha_expand_nibble(&c->status[0 ], v & 0x0F);
1545 *samples++ = adpcm_yamaha_expand_nibble(&c->status[st], v >> 4 );
1548 case AV_CODEC_ID_ADPCM_AICA:
1549 if (!c->has_status) {
1550 for (channel = 0; channel < avctx->channels; channel++)
1551 c->status[channel].step = 0;
1554 for (channel = 0; channel < avctx->channels; channel++) {
1555 samples = samples_p[channel];
1556 for (n = nb_samples >> 1; n > 0; n--) {
1557 int v = bytestream2_get_byteu(&gb);
1558 *samples++ = adpcm_yamaha_expand_nibble(&c->status[channel], v & 0x0F);
1559 *samples++ = adpcm_yamaha_expand_nibble(&c->status[channel], v >> 4 );
1563 case AV_CODEC_ID_ADPCM_AFC:
1565 int samples_per_block;
1568 if (avctx->extradata && avctx->extradata_size == 1 && avctx->extradata[0]) {
1569 samples_per_block = avctx->extradata[0] / 16;
1570 blocks = nb_samples / avctx->extradata[0];
1572 samples_per_block = nb_samples / 16;
1576 for (m = 0; m < blocks; m++) {
1577 for (channel = 0; channel < avctx->channels; channel++) {
1578 int prev1 = c->status[channel].sample1;
1579 int prev2 = c->status[channel].sample2;
1581 samples = samples_p[channel] + m * 16;
1582 /* Read in every sample for this channel. */
1583 for (i = 0; i < samples_per_block; i++) {
1584 int byte = bytestream2_get_byteu(&gb);
1585 int scale = 1 << (byte >> 4);
1586 int index = byte & 0xf;
1587 int factor1 = ff_adpcm_afc_coeffs[0][index];
1588 int factor2 = ff_adpcm_afc_coeffs[1][index];
1590 /* Decode 16 samples. */
1591 for (n = 0; n < 16; n++) {
1595 sampledat = sign_extend(byte, 4);
1597 byte = bytestream2_get_byteu(&gb);
1598 sampledat = sign_extend(byte >> 4, 4);
1601 sampledat = ((prev1 * factor1 + prev2 * factor2) +
1602 ((sampledat * scale) << 11)) >> 11;
1603 *samples = av_clip_int16(sampledat);
1609 c->status[channel].sample1 = prev1;
1610 c->status[channel].sample2 = prev2;
1613 bytestream2_seek(&gb, 0, SEEK_END);
1616 case AV_CODEC_ID_ADPCM_THP:
1617 case AV_CODEC_ID_ADPCM_THP_LE:
1622 #define THP_GET16(g) \
1624 avctx->codec->id == AV_CODEC_ID_ADPCM_THP_LE ? \
1625 bytestream2_get_le16u(&(g)) : \
1626 bytestream2_get_be16u(&(g)), 16)
1628 if (avctx->extradata) {
1630 if (avctx->extradata_size < 32 * avctx->channels) {
1631 av_log(avctx, AV_LOG_ERROR, "Missing coeff table\n");
1632 return AVERROR_INVALIDDATA;
1635 bytestream2_init(&tb, avctx->extradata, avctx->extradata_size);
1636 for (i = 0; i < avctx->channels; i++)
1637 for (n = 0; n < 16; n++)
1638 table[i][n] = THP_GET16(tb);
1640 for (i = 0; i < avctx->channels; i++)
1641 for (n = 0; n < 16; n++)
1642 table[i][n] = THP_GET16(gb);
1644 if (!c->has_status) {
1645 /* Initialize the previous sample. */
1646 for (i = 0; i < avctx->channels; i++) {
1647 c->status[i].sample1 = THP_GET16(gb);
1648 c->status[i].sample2 = THP_GET16(gb);
1652 bytestream2_skip(&gb, avctx->channels * 4);
1656 for (ch = 0; ch < avctx->channels; ch++) {
1657 samples = samples_p[ch];
1659 /* Read in every sample for this channel. */
1660 for (i = 0; i < (nb_samples + 13) / 14; i++) {
1661 int byte = bytestream2_get_byteu(&gb);
1662 int index = (byte >> 4) & 7;
1663 unsigned int exp = byte & 0x0F;
1664 int factor1 = table[ch][index * 2];
1665 int factor2 = table[ch][index * 2 + 1];
1667 /* Decode 14 samples. */
1668 for (n = 0; n < 14 && (i * 14 + n < nb_samples); n++) {
1672 sampledat = sign_extend(byte, 4);
1674 byte = bytestream2_get_byteu(&gb);
1675 sampledat = sign_extend(byte >> 4, 4);
1678 sampledat = ((c->status[ch].sample1 * factor1
1679 + c->status[ch].sample2 * factor2) >> 11) + (sampledat << exp);
1680 *samples = av_clip_int16(sampledat);
1681 c->status[ch].sample2 = c->status[ch].sample1;
1682 c->status[ch].sample1 = *samples++;
1688 case AV_CODEC_ID_ADPCM_DTK:
1689 for (channel = 0; channel < avctx->channels; channel++) {
1690 samples = samples_p[channel];
1692 /* Read in every sample for this channel. */
1693 for (i = 0; i < nb_samples / 28; i++) {
1696 bytestream2_skipu(&gb, 1);
1697 header = bytestream2_get_byteu(&gb);
1698 bytestream2_skipu(&gb, 3 - channel);
1700 /* Decode 28 samples. */
1701 for (n = 0; n < 28; n++) {
1702 int32_t sampledat, prev;
1704 switch (header >> 4) {
1706 prev = (c->status[channel].sample1 * 0x3c);
1709 prev = (c->status[channel].sample1 * 0x73) - (c->status[channel].sample2 * 0x34);
1712 prev = (c->status[channel].sample1 * 0x62) - (c->status[channel].sample2 * 0x37);
1718 prev = av_clip_intp2((prev + 0x20) >> 6, 21);
1720 byte = bytestream2_get_byteu(&gb);
1722 sampledat = sign_extend(byte, 4);
1724 sampledat = sign_extend(byte >> 4, 4);
1726 sampledat = ((sampledat * (1 << 12)) >> (header & 0xf)) * (1 << 6) + prev;
1727 *samples++ = av_clip_int16(sampledat >> 6);
1728 c->status[channel].sample2 = c->status[channel].sample1;
1729 c->status[channel].sample1 = sampledat;
1733 bytestream2_seek(&gb, 0, SEEK_SET);
1736 case AV_CODEC_ID_ADPCM_PSX:
1737 for (channel = 0; channel < avctx->channels; channel++) {
1738 samples = samples_p[channel];
1740 /* Read in every sample for this channel. */
1741 for (i = 0; i < nb_samples / 28; i++) {
1742 int filter, shift, flag, byte;
1744 filter = bytestream2_get_byteu(&gb);
1745 shift = filter & 0xf;
1746 filter = filter >> 4;
1747 if (filter >= FF_ARRAY_ELEMS(xa_adpcm_table))
1748 return AVERROR_INVALIDDATA;
1749 flag = bytestream2_get_byteu(&gb);
1751 /* Decode 28 samples. */
1752 for (n = 0; n < 28; n++) {
1753 int sample = 0, scale;
1757 scale = sign_extend(byte >> 4, 4);
1759 byte = bytestream2_get_byteu(&gb);
1760 scale = sign_extend(byte, 4);
1763 scale = scale << 12;
1764 sample = (int)((scale >> shift) + (c->status[channel].sample1 * xa_adpcm_table[filter][0] + c->status[channel].sample2 * xa_adpcm_table[filter][1]) / 64);
1766 *samples++ = av_clip_int16(sample);
1767 c->status[channel].sample2 = c->status[channel].sample1;
1768 c->status[channel].sample1 = sample;
1775 av_assert0(0); // unsupported codec_id should not happen
1778 if (avpkt->size && bytestream2_tell(&gb) == 0) {
1779 av_log(avctx, AV_LOG_ERROR, "Nothing consumed\n");
1780 return AVERROR_INVALIDDATA;
1785 if (avpkt->size < bytestream2_tell(&gb)) {
1786 av_log(avctx, AV_LOG_ERROR, "Overread of %d < %d\n", avpkt->size, bytestream2_tell(&gb));
1790 return bytestream2_tell(&gb);
1793 static void adpcm_flush(AVCodecContext *avctx)
1795 ADPCMDecodeContext *c = avctx->priv_data;
1800 static const enum AVSampleFormat sample_fmts_s16[] = { AV_SAMPLE_FMT_S16,
1801 AV_SAMPLE_FMT_NONE };
1802 static const enum AVSampleFormat sample_fmts_s16p[] = { AV_SAMPLE_FMT_S16P,
1803 AV_SAMPLE_FMT_NONE };
1804 static const enum AVSampleFormat sample_fmts_both[] = { AV_SAMPLE_FMT_S16,
1806 AV_SAMPLE_FMT_NONE };
1808 #define ADPCM_DECODER(id_, sample_fmts_, name_, long_name_) \
1809 AVCodec ff_ ## name_ ## _decoder = { \
1811 .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
1812 .type = AVMEDIA_TYPE_AUDIO, \
1814 .priv_data_size = sizeof(ADPCMDecodeContext), \
1815 .init = adpcm_decode_init, \
1816 .decode = adpcm_decode_frame, \
1817 .flush = adpcm_flush, \
1818 .capabilities = AV_CODEC_CAP_DR1, \
1819 .sample_fmts = sample_fmts_, \
1822 /* Note: Do not forget to add new entries to the Makefile as well. */
1823 ADPCM_DECODER(AV_CODEC_ID_ADPCM_4XM, sample_fmts_s16p, adpcm_4xm, "ADPCM 4X Movie");
1824 ADPCM_DECODER(AV_CODEC_ID_ADPCM_AFC, sample_fmts_s16p, adpcm_afc, "ADPCM Nintendo Gamecube AFC");
1825 ADPCM_DECODER(AV_CODEC_ID_ADPCM_AGM, sample_fmts_s16, adpcm_agm, "ADPCM AmuseGraphics Movie");
1826 ADPCM_DECODER(AV_CODEC_ID_ADPCM_AICA, sample_fmts_s16p, adpcm_aica, "ADPCM Yamaha AICA");
1827 ADPCM_DECODER(AV_CODEC_ID_ADPCM_CT, sample_fmts_s16, adpcm_ct, "ADPCM Creative Technology");
1828 ADPCM_DECODER(AV_CODEC_ID_ADPCM_DTK, sample_fmts_s16p, adpcm_dtk, "ADPCM Nintendo Gamecube DTK");
1829 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA, sample_fmts_s16, adpcm_ea, "ADPCM Electronic Arts");
1830 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_MAXIS_XA, sample_fmts_s16, adpcm_ea_maxis_xa, "ADPCM Electronic Arts Maxis CDROM XA");
1831 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R1, sample_fmts_s16p, adpcm_ea_r1, "ADPCM Electronic Arts R1");
1832 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R2, sample_fmts_s16p, adpcm_ea_r2, "ADPCM Electronic Arts R2");
1833 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R3, sample_fmts_s16p, adpcm_ea_r3, "ADPCM Electronic Arts R3");
1834 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_XAS, sample_fmts_s16p, adpcm_ea_xas, "ADPCM Electronic Arts XAS");
1835 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_AMV, sample_fmts_s16, adpcm_ima_amv, "ADPCM IMA AMV");
1836 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_APC, sample_fmts_s16, adpcm_ima_apc, "ADPCM IMA CRYO APC");
1837 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DAT4, sample_fmts_s16, adpcm_ima_dat4, "ADPCM IMA Eurocom DAT4");
1838 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK3, sample_fmts_s16, adpcm_ima_dk3, "ADPCM IMA Duck DK3");
1839 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK4, sample_fmts_s16, adpcm_ima_dk4, "ADPCM IMA Duck DK4");
1840 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_EA_EACS, sample_fmts_s16, adpcm_ima_ea_eacs, "ADPCM IMA Electronic Arts EACS");
1841 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_EA_SEAD, sample_fmts_s16, adpcm_ima_ea_sead, "ADPCM IMA Electronic Arts SEAD");
1842 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_ISS, sample_fmts_s16, adpcm_ima_iss, "ADPCM IMA Funcom ISS");
1843 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_OKI, sample_fmts_s16, adpcm_ima_oki, "ADPCM IMA Dialogic OKI");
1844 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_QT, sample_fmts_s16p, adpcm_ima_qt, "ADPCM IMA QuickTime");
1845 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_RAD, sample_fmts_s16, adpcm_ima_rad, "ADPCM IMA Radical");
1846 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_SMJPEG, sample_fmts_s16, adpcm_ima_smjpeg, "ADPCM IMA Loki SDL MJPEG");
1847 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WAV, sample_fmts_s16p, adpcm_ima_wav, "ADPCM IMA WAV");
1848 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WS, sample_fmts_both, adpcm_ima_ws, "ADPCM IMA Westwood");
1849 ADPCM_DECODER(AV_CODEC_ID_ADPCM_MS, sample_fmts_both, adpcm_ms, "ADPCM Microsoft");
1850 ADPCM_DECODER(AV_CODEC_ID_ADPCM_MTAF, sample_fmts_s16p, adpcm_mtaf, "ADPCM MTAF");
1851 ADPCM_DECODER(AV_CODEC_ID_ADPCM_PSX, sample_fmts_s16p, adpcm_psx, "ADPCM Playstation");
1852 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_2, sample_fmts_s16, adpcm_sbpro_2, "ADPCM Sound Blaster Pro 2-bit");
1853 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_3, sample_fmts_s16, adpcm_sbpro_3, "ADPCM Sound Blaster Pro 2.6-bit");
1854 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_4, sample_fmts_s16, adpcm_sbpro_4, "ADPCM Sound Blaster Pro 4-bit");
1855 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SWF, sample_fmts_s16, adpcm_swf, "ADPCM Shockwave Flash");
1856 ADPCM_DECODER(AV_CODEC_ID_ADPCM_THP_LE, sample_fmts_s16p, adpcm_thp_le, "ADPCM Nintendo THP (little-endian)");
1857 ADPCM_DECODER(AV_CODEC_ID_ADPCM_THP, sample_fmts_s16p, adpcm_thp, "ADPCM Nintendo THP");
1858 ADPCM_DECODER(AV_CODEC_ID_ADPCM_XA, sample_fmts_s16p, adpcm_xa, "ADPCM CDROM XA");
1859 ADPCM_DECODER(AV_CODEC_ID_ADPCM_YAMAHA, sample_fmts_s16, adpcm_yamaha, "ADPCM Yamaha");