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 Libav.
18 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
30 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
34 #include "bitstream.h"
36 #include "bytestream.h"
38 #include "adpcm_data.h"
44 * Features and limitations:
46 * Reference documents:
47 * http://wiki.multimedia.cx/index.php?title=Category:ADPCM_Audio_Codecs
48 * http://www.pcisys.net/~melanson/codecs/simpleaudio.html [dead]
49 * http://www.geocities.com/SiliconValley/8682/aud3.txt [dead]
50 * http://openquicktime.sourceforge.net/
51 * XAnim sources (xa_codec.c) http://xanim.polter.net/
52 * http://www.cs.ucla.edu/~leec/mediabench/applications.html [dead]
53 * SoX source code http://sox.sourceforge.net/
56 * http://ku-www.ss.titech.ac.jp/~yatsushi/xaadpcm.html [dead]
57 * vagpack & depack http://homepages.compuserve.de/bITmASTER32/psx-index.html [dead]
58 * readstr http://www.geocities.co.jp/Playtown/2004/
61 /* These are for CD-ROM XA ADPCM */
62 static const int xa_adpcm_table[5][2] = {
70 static const int ea_adpcm_table[] = {
78 // padded to zero where table size is less then 16
79 static const int swf_index_tables[4][16] = {
81 /*3*/ { -1, -1, 2, 4 },
82 /*4*/ { -1, -1, -1, -1, 2, 4, 6, 8 },
83 /*5*/ { -1, -1, -1, -1, -1, -1, -1, -1, 1, 2, 4, 6, 8, 10, 13, 16 }
88 typedef struct ADPCMDecodeContext {
89 ADPCMChannelStatus status[6];
90 int vqa_version; /**< VQA version. Used for ADPCM_IMA_WS */
93 static av_cold int adpcm_decode_init(AVCodecContext * avctx)
95 ADPCMDecodeContext *c = avctx->priv_data;
96 unsigned int min_channels = 1;
97 unsigned int max_channels = 2;
99 switch(avctx->codec->id) {
100 case AV_CODEC_ID_ADPCM_EA:
103 case AV_CODEC_ID_ADPCM_EA_R1:
104 case AV_CODEC_ID_ADPCM_EA_R2:
105 case AV_CODEC_ID_ADPCM_EA_R3:
106 case AV_CODEC_ID_ADPCM_EA_XAS:
110 if (avctx->channels < min_channels || avctx->channels > max_channels) {
111 av_log(avctx, AV_LOG_ERROR, "Invalid number of channels\n");
112 return AVERROR(EINVAL);
115 switch(avctx->codec->id) {
116 case AV_CODEC_ID_ADPCM_CT:
117 c->status[0].step = c->status[1].step = 511;
119 case AV_CODEC_ID_ADPCM_IMA_WAV:
120 if (avctx->bits_per_coded_sample != 4) {
121 av_log(avctx, AV_LOG_ERROR, "Only 4-bit ADPCM IMA WAV files are supported\n");
125 case AV_CODEC_ID_ADPCM_IMA_APC:
126 if (avctx->extradata && avctx->extradata_size >= 8) {
127 c->status[0].predictor = AV_RL32(avctx->extradata);
128 c->status[1].predictor = AV_RL32(avctx->extradata + 4);
131 case AV_CODEC_ID_ADPCM_IMA_WS:
132 if (avctx->extradata && avctx->extradata_size >= 2)
133 c->vqa_version = AV_RL16(avctx->extradata);
139 switch(avctx->codec->id) {
140 case AV_CODEC_ID_ADPCM_IMA_QT:
141 case AV_CODEC_ID_ADPCM_IMA_WAV:
142 case AV_CODEC_ID_ADPCM_4XM:
143 case AV_CODEC_ID_ADPCM_XA:
144 case AV_CODEC_ID_ADPCM_EA_R1:
145 case AV_CODEC_ID_ADPCM_EA_R2:
146 case AV_CODEC_ID_ADPCM_EA_R3:
147 case AV_CODEC_ID_ADPCM_EA_XAS:
148 case AV_CODEC_ID_ADPCM_THP:
149 avctx->sample_fmt = AV_SAMPLE_FMT_S16P;
151 case AV_CODEC_ID_ADPCM_IMA_WS:
152 avctx->sample_fmt = c->vqa_version == 3 ? AV_SAMPLE_FMT_S16P :
156 avctx->sample_fmt = AV_SAMPLE_FMT_S16;
162 static inline short adpcm_ima_expand_nibble(ADPCMChannelStatus *c, char nibble, int shift)
166 int sign, delta, diff, step;
168 step = ff_adpcm_step_table[c->step_index];
169 step_index = c->step_index + ff_adpcm_index_table[(unsigned)nibble];
170 step_index = av_clip(step_index, 0, 88);
174 /* perform direct multiplication instead of series of jumps proposed by
175 * the reference ADPCM implementation since modern CPUs can do the mults
177 diff = ((2 * delta + 1) * step) >> shift;
178 predictor = c->predictor;
179 if (sign) predictor -= diff;
180 else predictor += diff;
182 c->predictor = av_clip_int16(predictor);
183 c->step_index = step_index;
185 return (short)c->predictor;
188 static inline int adpcm_ima_qt_expand_nibble(ADPCMChannelStatus *c, int nibble, int shift)
194 step = ff_adpcm_step_table[c->step_index];
195 step_index = c->step_index + ff_adpcm_index_table[nibble];
196 step_index = av_clip(step_index, 0, 88);
199 if (nibble & 4) diff += step;
200 if (nibble & 2) diff += step >> 1;
201 if (nibble & 1) diff += step >> 2;
204 predictor = c->predictor - diff;
206 predictor = c->predictor + diff;
208 c->predictor = av_clip_int16(predictor);
209 c->step_index = step_index;
214 static inline short adpcm_ms_expand_nibble(ADPCMChannelStatus *c, int nibble)
218 predictor = (((c->sample1) * (c->coeff1)) + ((c->sample2) * (c->coeff2))) / 64;
219 predictor += ((nibble & 0x08)?(nibble - 0x10):(nibble)) * c->idelta;
221 c->sample2 = c->sample1;
222 c->sample1 = av_clip_int16(predictor);
223 c->idelta = (ff_adpcm_AdaptationTable[(int)nibble] * c->idelta) >> 8;
224 if (c->idelta < 16) c->idelta = 16;
229 static inline short adpcm_ct_expand_nibble(ADPCMChannelStatus *c, char nibble)
231 int sign, delta, diff;
236 /* perform direct multiplication instead of series of jumps proposed by
237 * the reference ADPCM implementation since modern CPUs can do the mults
239 diff = ((2 * delta + 1) * c->step) >> 3;
240 /* predictor update is not so trivial: predictor is multiplied on 254/256 before updating */
241 c->predictor = ((c->predictor * 254) >> 8) + (sign ? -diff : diff);
242 c->predictor = av_clip_int16(c->predictor);
243 /* calculate new step and clamp it to range 511..32767 */
244 new_step = (ff_adpcm_AdaptationTable[nibble & 7] * c->step) >> 8;
245 c->step = av_clip(new_step, 511, 32767);
247 return (short)c->predictor;
250 static inline short adpcm_sbpro_expand_nibble(ADPCMChannelStatus *c, char nibble, int size, int shift)
252 int sign, delta, diff;
254 sign = nibble & (1<<(size-1));
255 delta = nibble & ((1<<(size-1))-1);
256 diff = delta << (7 + c->step + shift);
259 c->predictor = av_clip(c->predictor + (sign ? -diff : diff), -16384,16256);
261 /* calculate new step */
262 if (delta >= (2*size - 3) && c->step < 3)
264 else if (delta == 0 && c->step > 0)
267 return (short) c->predictor;
270 static inline short adpcm_yamaha_expand_nibble(ADPCMChannelStatus *c, unsigned char nibble)
277 c->predictor += (c->step * ff_adpcm_yamaha_difflookup[nibble]) / 8;
278 c->predictor = av_clip_int16(c->predictor);
279 c->step = (c->step * ff_adpcm_yamaha_indexscale[nibble]) >> 8;
280 c->step = av_clip(c->step, 127, 24567);
284 static int xa_decode(AVCodecContext *avctx, int16_t *out0, int16_t *out1,
285 const uint8_t *in, ADPCMChannelStatus *left,
286 ADPCMChannelStatus *right, int channels, int sample_offset)
289 int shift,filter,f0,f1;
293 out0 += sample_offset;
297 out1 += sample_offset;
300 shift = 12 - (in[4+i*2] & 15);
301 filter = in[4+i*2] >> 4;
303 av_log(avctx, AV_LOG_ERROR,
304 "Invalid XA-ADPCM filter %d (max. allowed is 4)\n",
306 return AVERROR_INVALIDDATA;
308 f0 = xa_adpcm_table[filter][0];
309 f1 = xa_adpcm_table[filter][1];
317 t = sign_extend(d, 4);
318 s = ( t<<shift ) + ((s_1*f0 + s_2*f1+32)>>6);
320 s_1 = av_clip_int16(s);
327 s_1 = right->sample1;
328 s_2 = right->sample2;
331 shift = 12 - (in[5+i*2] & 15);
332 filter = in[5+i*2] >> 4;
334 av_log(avctx, AV_LOG_ERROR,
335 "Invalid XA-ADPCM filter %d (max. allowed is 4)\n",
337 return AVERROR_INVALIDDATA;
339 f0 = xa_adpcm_table[filter][0];
340 f1 = xa_adpcm_table[filter][1];
345 t = sign_extend(d >> 4, 4);
346 s = ( t<<shift ) + ((s_1*f0 + s_2*f1+32)>>6);
348 s_1 = av_clip_int16(s);
353 right->sample1 = s_1;
354 right->sample2 = s_2;
360 out0 += 28 * (3 - channels);
361 out1 += 28 * (3 - channels);
367 static void adpcm_swf_decode(AVCodecContext *avctx, const uint8_t *buf, int buf_size, int16_t *samples)
369 ADPCMDecodeContext *c = avctx->priv_data;
372 int k0, signmask, nb_bits, count;
373 int size = buf_size*8;
376 bitstream_init(&bc, buf, size);
378 //read bits & initial values
379 nb_bits = bitstream_read(&bc, 2)+2;
380 table = swf_index_tables[nb_bits-2];
381 k0 = 1 << (nb_bits-2);
382 signmask = 1 << (nb_bits-1);
384 while (bitstream_tell(&bc) <= size - 22 * avctx->channels) {
385 for (i = 0; i < avctx->channels; i++) {
387 c->status[i].predictor = bitstream_read_signed(&bc, 16);
388 c->status[i].step_index = bitstream_read(&bc, 6);
391 for (count = 0; bitstream_tell(&bc) <= size - nb_bits * avctx->channels && count < 4095; count++) {
394 for (i = 0; i < avctx->channels; i++) {
395 // similar to IMA adpcm
396 int delta = bitstream_read(&bc, nb_bits);
397 int step = ff_adpcm_step_table[c->status[i].step_index];
398 long vpdiff = 0; // vpdiff = (delta+0.5)*step/4
409 if (delta & signmask)
410 c->status[i].predictor -= vpdiff;
412 c->status[i].predictor += vpdiff;
414 c->status[i].step_index += table[delta & (~signmask)];
416 c->status[i].step_index = av_clip(c->status[i].step_index, 0, 88);
417 c->status[i].predictor = av_clip_int16(c->status[i].predictor);
419 *samples++ = c->status[i].predictor;
426 * Get the number of samples that will be decoded from the packet.
427 * In one case, this is actually the maximum number of samples possible to
428 * decode with the given buf_size.
430 * @param[out] coded_samples set to the number of samples as coded in the
431 * packet, or 0 if the codec does not encode the
432 * number of samples in each frame.
434 static int get_nb_samples(AVCodecContext *avctx, GetByteContext *gb,
435 int buf_size, int *coded_samples)
437 ADPCMDecodeContext *s = avctx->priv_data;
439 int ch = avctx->channels;
440 int has_coded_samples = 0;
445 switch (avctx->codec->id) {
446 /* constant, only check buf_size */
447 case AV_CODEC_ID_ADPCM_EA_XAS:
448 if (buf_size < 76 * ch)
452 case AV_CODEC_ID_ADPCM_IMA_QT:
453 if (buf_size < 34 * ch)
457 /* simple 4-bit adpcm */
458 case AV_CODEC_ID_ADPCM_CT:
459 case AV_CODEC_ID_ADPCM_IMA_APC:
460 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
461 case AV_CODEC_ID_ADPCM_IMA_WS:
462 case AV_CODEC_ID_ADPCM_YAMAHA:
463 nb_samples = buf_size * 2 / ch;
469 /* simple 4-bit adpcm, with header */
471 switch (avctx->codec->id) {
472 case AV_CODEC_ID_ADPCM_4XM:
473 case AV_CODEC_ID_ADPCM_IMA_ISS: header_size = 4 * ch; break;
474 case AV_CODEC_ID_ADPCM_IMA_AMV: header_size = 8; break;
475 case AV_CODEC_ID_ADPCM_IMA_SMJPEG: header_size = 4; break;
478 return (buf_size - header_size) * 2 / ch;
480 /* more complex formats */
481 switch (avctx->codec->id) {
482 case AV_CODEC_ID_ADPCM_EA:
483 has_coded_samples = 1;
484 *coded_samples = bytestream2_get_le32(gb);
485 *coded_samples -= *coded_samples % 28;
486 nb_samples = (buf_size - 12) / 30 * 28;
488 case AV_CODEC_ID_ADPCM_IMA_EA_EACS:
489 has_coded_samples = 1;
490 *coded_samples = bytestream2_get_le32(gb);
491 nb_samples = (buf_size - (4 + 8 * ch)) * 2 / ch;
493 case AV_CODEC_ID_ADPCM_EA_MAXIS_XA:
494 nb_samples = (buf_size - ch) / ch * 2;
496 case AV_CODEC_ID_ADPCM_EA_R1:
497 case AV_CODEC_ID_ADPCM_EA_R2:
498 case AV_CODEC_ID_ADPCM_EA_R3:
499 /* maximum number of samples */
500 /* has internal offsets and a per-frame switch to signal raw 16-bit */
501 has_coded_samples = 1;
502 switch (avctx->codec->id) {
503 case AV_CODEC_ID_ADPCM_EA_R1:
504 header_size = 4 + 9 * ch;
505 *coded_samples = bytestream2_get_le32(gb);
507 case AV_CODEC_ID_ADPCM_EA_R2:
508 header_size = 4 + 5 * ch;
509 *coded_samples = bytestream2_get_le32(gb);
511 case AV_CODEC_ID_ADPCM_EA_R3:
512 header_size = 4 + 5 * ch;
513 *coded_samples = bytestream2_get_be32(gb);
516 *coded_samples -= *coded_samples % 28;
517 nb_samples = (buf_size - header_size) * 2 / ch;
518 nb_samples -= nb_samples % 28;
520 case AV_CODEC_ID_ADPCM_IMA_DK3:
521 if (avctx->block_align > 0)
522 buf_size = FFMIN(buf_size, avctx->block_align);
523 nb_samples = ((buf_size - 16) * 2 / 3 * 4) / ch;
525 case AV_CODEC_ID_ADPCM_IMA_DK4:
526 if (avctx->block_align > 0)
527 buf_size = FFMIN(buf_size, avctx->block_align);
528 nb_samples = 1 + (buf_size - 4 * ch) * 2 / ch;
530 case AV_CODEC_ID_ADPCM_IMA_WAV:
531 if (avctx->block_align > 0)
532 buf_size = FFMIN(buf_size, avctx->block_align);
533 nb_samples = 1 + (buf_size - 4 * ch) / (4 * ch) * 8;
535 case AV_CODEC_ID_ADPCM_MS:
536 if (avctx->block_align > 0)
537 buf_size = FFMIN(buf_size, avctx->block_align);
538 nb_samples = 2 + (buf_size - 7 * ch) * 2 / ch;
540 case AV_CODEC_ID_ADPCM_SBPRO_2:
541 case AV_CODEC_ID_ADPCM_SBPRO_3:
542 case AV_CODEC_ID_ADPCM_SBPRO_4:
544 int samples_per_byte;
545 switch (avctx->codec->id) {
546 case AV_CODEC_ID_ADPCM_SBPRO_2: samples_per_byte = 4; break;
547 case AV_CODEC_ID_ADPCM_SBPRO_3: samples_per_byte = 3; break;
548 case AV_CODEC_ID_ADPCM_SBPRO_4: samples_per_byte = 2; break;
550 if (!s->status[0].step_index) {
554 nb_samples += buf_size * samples_per_byte / ch;
557 case AV_CODEC_ID_ADPCM_SWF:
559 int buf_bits = buf_size * 8 - 2;
560 int nbits = (bytestream2_get_byte(gb) >> 6) + 2;
561 int block_hdr_size = 22 * ch;
562 int block_size = block_hdr_size + nbits * ch * 4095;
563 int nblocks = buf_bits / block_size;
564 int bits_left = buf_bits - nblocks * block_size;
565 nb_samples = nblocks * 4096;
566 if (bits_left >= block_hdr_size)
567 nb_samples += 1 + (bits_left - block_hdr_size) / (nbits * ch);
570 case AV_CODEC_ID_ADPCM_THP:
571 has_coded_samples = 1;
572 bytestream2_skip(gb, 4); // channel size
573 *coded_samples = bytestream2_get_be32(gb);
574 *coded_samples -= *coded_samples % 14;
575 nb_samples = (buf_size - 80) / (8 * ch) * 14;
577 case AV_CODEC_ID_ADPCM_XA:
578 nb_samples = (buf_size / 128) * 224 / ch;
582 /* validate coded sample count */
583 if (has_coded_samples && (*coded_samples <= 0 || *coded_samples > nb_samples))
584 return AVERROR_INVALIDDATA;
589 static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
590 int *got_frame_ptr, AVPacket *avpkt)
592 AVFrame *frame = data;
593 const uint8_t *buf = avpkt->data;
594 int buf_size = avpkt->size;
595 ADPCMDecodeContext *c = avctx->priv_data;
596 ADPCMChannelStatus *cs;
597 int n, m, channel, i;
602 int nb_samples, coded_samples, ret;
605 bytestream2_init(&gb, buf, buf_size);
606 nb_samples = get_nb_samples(avctx, &gb, buf_size, &coded_samples);
607 if (nb_samples <= 0) {
608 av_log(avctx, AV_LOG_ERROR, "invalid number of samples in packet\n");
609 return AVERROR_INVALIDDATA;
612 /* get output buffer */
613 frame->nb_samples = nb_samples;
614 if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
615 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
618 samples = (short *)frame->data[0];
619 samples_p = (int16_t **)frame->extended_data;
621 /* use coded_samples when applicable */
622 /* it is always <= nb_samples, so the output buffer will be large enough */
624 if (coded_samples != nb_samples)
625 av_log(avctx, AV_LOG_WARNING, "mismatch in coded sample count\n");
626 frame->nb_samples = nb_samples = coded_samples;
629 st = avctx->channels == 2 ? 1 : 0;
631 switch(avctx->codec->id) {
632 case AV_CODEC_ID_ADPCM_IMA_QT:
633 /* In QuickTime, IMA is encoded by chunks of 34 bytes (=64 samples).
634 Channel data is interleaved per-chunk. */
635 for (channel = 0; channel < avctx->channels; channel++) {
638 cs = &(c->status[channel]);
639 /* (pppppp) (piiiiiii) */
641 /* Bits 15-7 are the _top_ 9 bits of the 16-bit initial predictor value */
642 predictor = sign_extend(bytestream2_get_be16u(&gb), 16);
643 step_index = predictor & 0x7F;
646 if (cs->step_index == step_index) {
647 int diff = predictor - cs->predictor;
654 cs->step_index = step_index;
655 cs->predictor = predictor;
658 if (cs->step_index > 88u){
659 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
660 channel, cs->step_index);
661 return AVERROR_INVALIDDATA;
664 samples = samples_p[channel];
666 for (m = 0; m < 64; m += 2) {
667 int byte = bytestream2_get_byteu(&gb);
668 samples[m ] = adpcm_ima_qt_expand_nibble(cs, byte & 0x0F, 3);
669 samples[m + 1] = adpcm_ima_qt_expand_nibble(cs, byte >> 4 , 3);
673 case AV_CODEC_ID_ADPCM_IMA_WAV:
674 for(i=0; i<avctx->channels; i++){
675 cs = &(c->status[i]);
676 cs->predictor = samples_p[i][0] = sign_extend(bytestream2_get_le16u(&gb), 16);
678 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
679 if (cs->step_index > 88u){
680 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
682 return AVERROR_INVALIDDATA;
686 for (n = 0; n < (nb_samples - 1) / 8; n++) {
687 for (i = 0; i < avctx->channels; i++) {
689 samples = &samples_p[i][1 + n * 8];
690 for (m = 0; m < 8; m += 2) {
691 int v = bytestream2_get_byteu(&gb);
692 samples[m ] = adpcm_ima_expand_nibble(cs, v & 0x0F, 3);
693 samples[m + 1] = adpcm_ima_expand_nibble(cs, v >> 4 , 3);
698 case AV_CODEC_ID_ADPCM_4XM:
699 for (i = 0; i < avctx->channels; i++)
700 c->status[i].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
702 for (i = 0; i < avctx->channels; i++) {
703 c->status[i].step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
704 if (c->status[i].step_index > 88u) {
705 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
706 i, c->status[i].step_index);
707 return AVERROR_INVALIDDATA;
711 for (i = 0; i < avctx->channels; i++) {
712 samples = (int16_t *)frame->data[i];
714 for (n = nb_samples >> 1; n > 0; n--) {
715 int v = bytestream2_get_byteu(&gb);
716 *samples++ = adpcm_ima_expand_nibble(cs, v & 0x0F, 4);
717 *samples++ = adpcm_ima_expand_nibble(cs, v >> 4 , 4);
721 case AV_CODEC_ID_ADPCM_MS:
725 block_predictor = bytestream2_get_byteu(&gb);
726 if (block_predictor > 6) {
727 av_log(avctx, AV_LOG_ERROR, "ERROR: block_predictor[0] = %d\n",
729 return AVERROR_INVALIDDATA;
731 c->status[0].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
732 c->status[0].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
734 block_predictor = bytestream2_get_byteu(&gb);
735 if (block_predictor > 6) {
736 av_log(avctx, AV_LOG_ERROR, "ERROR: block_predictor[1] = %d\n",
738 return AVERROR_INVALIDDATA;
740 c->status[1].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
741 c->status[1].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
743 c->status[0].idelta = sign_extend(bytestream2_get_le16u(&gb), 16);
745 c->status[1].idelta = sign_extend(bytestream2_get_le16u(&gb), 16);
748 c->status[0].sample1 = sign_extend(bytestream2_get_le16u(&gb), 16);
749 if (st) c->status[1].sample1 = sign_extend(bytestream2_get_le16u(&gb), 16);
750 c->status[0].sample2 = sign_extend(bytestream2_get_le16u(&gb), 16);
751 if (st) c->status[1].sample2 = sign_extend(bytestream2_get_le16u(&gb), 16);
753 *samples++ = c->status[0].sample2;
754 if (st) *samples++ = c->status[1].sample2;
755 *samples++ = c->status[0].sample1;
756 if (st) *samples++ = c->status[1].sample1;
757 for(n = (nb_samples - 2) >> (1 - st); n > 0; n--) {
758 int byte = bytestream2_get_byteu(&gb);
759 *samples++ = adpcm_ms_expand_nibble(&c->status[0 ], byte >> 4 );
760 *samples++ = adpcm_ms_expand_nibble(&c->status[st], byte & 0x0F);
764 case AV_CODEC_ID_ADPCM_IMA_DK4:
765 for (channel = 0; channel < avctx->channels; channel++) {
766 cs = &c->status[channel];
767 cs->predictor = *samples++ = sign_extend(bytestream2_get_le16u(&gb), 16);
768 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
769 if (cs->step_index > 88u){
770 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
771 channel, cs->step_index);
772 return AVERROR_INVALIDDATA;
775 for (n = (nb_samples >> (1 - st)) - 1; n > 0; n--) {
776 int v = bytestream2_get_byteu(&gb);
777 *samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v >> 4 , 3);
778 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
781 case AV_CODEC_ID_ADPCM_IMA_DK3:
785 int decode_top_nibble_next = 0;
787 const int16_t *samples_end = samples + avctx->channels * nb_samples;
789 bytestream2_skipu(&gb, 10);
790 c->status[0].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
791 c->status[1].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
792 c->status[0].step_index = bytestream2_get_byteu(&gb);
793 c->status[1].step_index = bytestream2_get_byteu(&gb);
794 if (c->status[0].step_index > 88u || c->status[1].step_index > 88u){
795 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i/%i\n",
796 c->status[0].step_index, c->status[1].step_index);
797 return AVERROR_INVALIDDATA;
799 /* sign extend the predictors */
800 diff_channel = c->status[1].predictor;
802 /* DK3 ADPCM support macro */
803 #define DK3_GET_NEXT_NIBBLE() \
804 if (decode_top_nibble_next) { \
805 nibble = last_byte >> 4; \
806 decode_top_nibble_next = 0; \
808 last_byte = bytestream2_get_byteu(&gb); \
809 nibble = last_byte & 0x0F; \
810 decode_top_nibble_next = 1; \
813 while (samples < samples_end) {
815 /* for this algorithm, c->status[0] is the sum channel and
816 * c->status[1] is the diff channel */
818 /* process the first predictor of the sum channel */
819 DK3_GET_NEXT_NIBBLE();
820 adpcm_ima_expand_nibble(&c->status[0], nibble, 3);
822 /* process the diff channel predictor */
823 DK3_GET_NEXT_NIBBLE();
824 adpcm_ima_expand_nibble(&c->status[1], nibble, 3);
826 /* process the first pair of stereo PCM samples */
827 diff_channel = (diff_channel + c->status[1].predictor) / 2;
828 *samples++ = c->status[0].predictor + c->status[1].predictor;
829 *samples++ = c->status[0].predictor - c->status[1].predictor;
831 /* process the second predictor of the sum channel */
832 DK3_GET_NEXT_NIBBLE();
833 adpcm_ima_expand_nibble(&c->status[0], nibble, 3);
835 /* process the second pair of stereo PCM samples */
836 diff_channel = (diff_channel + c->status[1].predictor) / 2;
837 *samples++ = c->status[0].predictor + c->status[1].predictor;
838 *samples++ = c->status[0].predictor - c->status[1].predictor;
842 case AV_CODEC_ID_ADPCM_IMA_ISS:
843 for (channel = 0; channel < avctx->channels; channel++) {
844 cs = &c->status[channel];
845 cs->predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
846 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
847 if (cs->step_index > 88u){
848 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
849 channel, cs->step_index);
850 return AVERROR_INVALIDDATA;
854 for (n = nb_samples >> (1 - st); n > 0; n--) {
856 int v = bytestream2_get_byteu(&gb);
857 /* nibbles are swapped for mono */
865 *samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v1, 3);
866 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v2, 3);
869 case AV_CODEC_ID_ADPCM_IMA_APC:
870 while (bytestream2_get_bytes_left(&gb) > 0) {
871 int v = bytestream2_get_byteu(&gb);
872 *samples++ = adpcm_ima_expand_nibble(&c->status[0], v >> 4 , 3);
873 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
876 case AV_CODEC_ID_ADPCM_IMA_WS:
877 if (c->vqa_version == 3) {
878 for (channel = 0; channel < avctx->channels; channel++) {
879 int16_t *smp = samples_p[channel];
881 for (n = nb_samples / 2; n > 0; n--) {
882 int v = bytestream2_get_byteu(&gb);
883 *smp++ = adpcm_ima_expand_nibble(&c->status[channel], v >> 4 , 3);
884 *smp++ = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
888 for (n = nb_samples / 2; n > 0; n--) {
889 for (channel = 0; channel < avctx->channels; channel++) {
890 int v = bytestream2_get_byteu(&gb);
891 *samples++ = adpcm_ima_expand_nibble(&c->status[channel], v >> 4 , 3);
892 samples[st] = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
894 samples += avctx->channels;
897 bytestream2_seek(&gb, 0, SEEK_END);
899 case AV_CODEC_ID_ADPCM_XA:
901 int16_t *out0 = samples_p[0];
902 int16_t *out1 = samples_p[1];
903 int samples_per_block = 28 * (3 - avctx->channels) * 4;
904 int sample_offset = 0;
905 while (bytestream2_get_bytes_left(&gb) >= 128) {
906 if ((ret = xa_decode(avctx, out0, out1, buf + bytestream2_tell(&gb),
907 &c->status[0], &c->status[1],
908 avctx->channels, sample_offset)) < 0)
910 bytestream2_skipu(&gb, 128);
911 sample_offset += samples_per_block;
915 case AV_CODEC_ID_ADPCM_IMA_EA_EACS:
916 for (i=0; i<=st; i++) {
917 c->status[i].step_index = bytestream2_get_le32u(&gb);
918 if (c->status[i].step_index > 88u) {
919 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
920 i, c->status[i].step_index);
921 return AVERROR_INVALIDDATA;
924 for (i=0; i<=st; i++)
925 c->status[i].predictor = bytestream2_get_le32u(&gb);
927 for (n = nb_samples >> (1 - st); n > 0; n--) {
928 int byte = bytestream2_get_byteu(&gb);
929 *samples++ = adpcm_ima_expand_nibble(&c->status[0], byte >> 4, 3);
930 *samples++ = adpcm_ima_expand_nibble(&c->status[st], byte & 0x0F, 3);
933 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
934 for (n = nb_samples >> (1 - st); n > 0; n--) {
935 int byte = bytestream2_get_byteu(&gb);
936 *samples++ = adpcm_ima_expand_nibble(&c->status[0], byte >> 4, 6);
937 *samples++ = adpcm_ima_expand_nibble(&c->status[st], byte & 0x0F, 6);
940 case AV_CODEC_ID_ADPCM_EA:
942 int previous_left_sample, previous_right_sample;
943 int current_left_sample, current_right_sample;
944 int next_left_sample, next_right_sample;
945 int coeff1l, coeff2l, coeff1r, coeff2r;
946 int shift_left, shift_right;
948 /* Each EA ADPCM frame has a 12-byte header followed by 30-byte pieces,
949 each coding 28 stereo samples. */
951 current_left_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
952 previous_left_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
953 current_right_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
954 previous_right_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
956 for (count1 = 0; count1 < nb_samples / 28; count1++) {
957 int byte = bytestream2_get_byteu(&gb);
958 coeff1l = ea_adpcm_table[ byte >> 4 ];
959 coeff2l = ea_adpcm_table[(byte >> 4 ) + 4];
960 coeff1r = ea_adpcm_table[ byte & 0x0F];
961 coeff2r = ea_adpcm_table[(byte & 0x0F) + 4];
963 byte = bytestream2_get_byteu(&gb);
964 shift_left = 20 - (byte >> 4);
965 shift_right = 20 - (byte & 0x0F);
967 for (count2 = 0; count2 < 28; count2++) {
968 byte = bytestream2_get_byteu(&gb);
969 next_left_sample = sign_extend(byte >> 4, 4) << shift_left;
970 next_right_sample = sign_extend(byte, 4) << shift_right;
972 next_left_sample = (next_left_sample +
973 (current_left_sample * coeff1l) +
974 (previous_left_sample * coeff2l) + 0x80) >> 8;
975 next_right_sample = (next_right_sample +
976 (current_right_sample * coeff1r) +
977 (previous_right_sample * coeff2r) + 0x80) >> 8;
979 previous_left_sample = current_left_sample;
980 current_left_sample = av_clip_int16(next_left_sample);
981 previous_right_sample = current_right_sample;
982 current_right_sample = av_clip_int16(next_right_sample);
983 *samples++ = current_left_sample;
984 *samples++ = current_right_sample;
988 bytestream2_skip(&gb, 2); // Skip terminating 0x0000
992 case AV_CODEC_ID_ADPCM_EA_MAXIS_XA:
994 int coeff[2][2], shift[2];
996 for(channel = 0; channel < avctx->channels; channel++) {
997 int byte = bytestream2_get_byteu(&gb);
999 coeff[channel][i] = ea_adpcm_table[(byte >> 4) + 4*i];
1000 shift[channel] = 20 - (byte & 0x0F);
1002 for (count1 = 0; count1 < nb_samples / 2; count1++) {
1005 byte[0] = bytestream2_get_byteu(&gb);
1006 if (st) byte[1] = bytestream2_get_byteu(&gb);
1007 for(i = 4; i >= 0; i-=4) { /* Pairwise samples LL RR (st) or LL LL (mono) */
1008 for(channel = 0; channel < avctx->channels; channel++) {
1009 int sample = sign_extend(byte[channel] >> i, 4) << shift[channel];
1011 c->status[channel].sample1 * coeff[channel][0] +
1012 c->status[channel].sample2 * coeff[channel][1] + 0x80) >> 8;
1013 c->status[channel].sample2 = c->status[channel].sample1;
1014 c->status[channel].sample1 = av_clip_int16(sample);
1015 *samples++ = c->status[channel].sample1;
1019 bytestream2_seek(&gb, 0, SEEK_END);
1022 case AV_CODEC_ID_ADPCM_EA_R1:
1023 case AV_CODEC_ID_ADPCM_EA_R2:
1024 case AV_CODEC_ID_ADPCM_EA_R3: {
1025 /* channel numbering
1027 4chan: 0=fl, 1=rl, 2=fr, 3=rr
1028 6chan: 0=fl, 1=c, 2=fr, 3=rl, 4=rr, 5=sub */
1029 const int big_endian = avctx->codec->id == AV_CODEC_ID_ADPCM_EA_R3;
1030 int previous_sample, current_sample, next_sample;
1033 unsigned int channel;
1038 for (channel=0; channel<avctx->channels; channel++)
1039 offsets[channel] = (big_endian ? bytestream2_get_be32(&gb) :
1040 bytestream2_get_le32(&gb)) +
1041 (avctx->channels + 1) * 4;
1043 for (channel=0; channel<avctx->channels; channel++) {
1044 bytestream2_seek(&gb, offsets[channel], SEEK_SET);
1045 samplesC = samples_p[channel];
1047 if (avctx->codec->id == AV_CODEC_ID_ADPCM_EA_R1) {
1048 current_sample = sign_extend(bytestream2_get_le16(&gb), 16);
1049 previous_sample = sign_extend(bytestream2_get_le16(&gb), 16);
1051 current_sample = c->status[channel].predictor;
1052 previous_sample = c->status[channel].prev_sample;
1055 for (count1 = 0; count1 < nb_samples / 28; count1++) {
1056 int byte = bytestream2_get_byte(&gb);
1057 if (byte == 0xEE) { /* only seen in R2 and R3 */
1058 current_sample = sign_extend(bytestream2_get_be16(&gb), 16);
1059 previous_sample = sign_extend(bytestream2_get_be16(&gb), 16);
1061 for (count2=0; count2<28; count2++)
1062 *samplesC++ = sign_extend(bytestream2_get_be16(&gb), 16);
1064 coeff1 = ea_adpcm_table[ byte >> 4 ];
1065 coeff2 = ea_adpcm_table[(byte >> 4) + 4];
1066 shift = 20 - (byte & 0x0F);
1068 for (count2=0; count2<28; count2++) {
1070 next_sample = sign_extend(byte, 4) << shift;
1072 byte = bytestream2_get_byte(&gb);
1073 next_sample = sign_extend(byte >> 4, 4) << shift;
1076 next_sample += (current_sample * coeff1) +
1077 (previous_sample * coeff2);
1078 next_sample = av_clip_int16(next_sample >> 8);
1080 previous_sample = current_sample;
1081 current_sample = next_sample;
1082 *samplesC++ = current_sample;
1088 } else if (count != count1) {
1089 av_log(avctx, AV_LOG_WARNING, "per-channel sample count mismatch\n");
1090 count = FFMAX(count, count1);
1093 if (avctx->codec->id != AV_CODEC_ID_ADPCM_EA_R1) {
1094 c->status[channel].predictor = current_sample;
1095 c->status[channel].prev_sample = previous_sample;
1099 frame->nb_samples = count * 28;
1100 bytestream2_seek(&gb, 0, SEEK_END);
1103 case AV_CODEC_ID_ADPCM_EA_XAS:
1104 for (channel=0; channel<avctx->channels; channel++) {
1105 int coeff[2][4], shift[4];
1106 int16_t *s = samples_p[channel];
1107 for (n = 0; n < 4; n++, s += 32) {
1108 int val = sign_extend(bytestream2_get_le16u(&gb), 16);
1110 coeff[i][n] = ea_adpcm_table[(val&0x0F)+4*i];
1113 val = sign_extend(bytestream2_get_le16u(&gb), 16);
1114 shift[n] = 20 - (val & 0x0F);
1118 for (m=2; m<32; m+=2) {
1119 s = &samples_p[channel][m];
1120 for (n = 0; n < 4; n++, s += 32) {
1122 int byte = bytestream2_get_byteu(&gb);
1124 level = sign_extend(byte >> 4, 4) << shift[n];
1125 pred = s[-1] * coeff[0][n] + s[-2] * coeff[1][n];
1126 s[0] = av_clip_int16((level + pred + 0x80) >> 8);
1128 level = sign_extend(byte, 4) << shift[n];
1129 pred = s[0] * coeff[0][n] + s[-1] * coeff[1][n];
1130 s[1] = av_clip_int16((level + pred + 0x80) >> 8);
1135 case AV_CODEC_ID_ADPCM_IMA_AMV:
1136 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
1137 if (avctx->codec->id == AV_CODEC_ID_ADPCM_IMA_AMV) {
1138 c->status[0].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1139 c->status[0].step_index = bytestream2_get_le16u(&gb);
1140 bytestream2_skipu(&gb, 4);
1142 c->status[0].predictor = sign_extend(bytestream2_get_be16u(&gb), 16);
1143 c->status[0].step_index = bytestream2_get_byteu(&gb);
1144 bytestream2_skipu(&gb, 1);
1146 if (c->status[0].step_index > 88u) {
1147 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i\n",
1148 c->status[0].step_index);
1149 return AVERROR_INVALIDDATA;
1152 for (n = nb_samples >> (1 - st); n > 0; n--) {
1153 int hi, lo, v = bytestream2_get_byteu(&gb);
1155 if (avctx->codec->id == AV_CODEC_ID_ADPCM_IMA_AMV) {
1163 *samples++ = adpcm_ima_expand_nibble(&c->status[0], lo, 3);
1164 *samples++ = adpcm_ima_expand_nibble(&c->status[0], hi, 3);
1167 case AV_CODEC_ID_ADPCM_CT:
1168 for (n = nb_samples >> (1 - st); n > 0; n--) {
1169 int v = bytestream2_get_byteu(&gb);
1170 *samples++ = adpcm_ct_expand_nibble(&c->status[0 ], v >> 4 );
1171 *samples++ = adpcm_ct_expand_nibble(&c->status[st], v & 0x0F);
1174 case AV_CODEC_ID_ADPCM_SBPRO_4:
1175 case AV_CODEC_ID_ADPCM_SBPRO_3:
1176 case AV_CODEC_ID_ADPCM_SBPRO_2:
1177 if (!c->status[0].step_index) {
1178 /* the first byte is a raw sample */
1179 *samples++ = 128 * (bytestream2_get_byteu(&gb) - 0x80);
1181 *samples++ = 128 * (bytestream2_get_byteu(&gb) - 0x80);
1182 c->status[0].step_index = 1;
1185 if (avctx->codec->id == AV_CODEC_ID_ADPCM_SBPRO_4) {
1186 for (n = nb_samples >> (1 - st); n > 0; n--) {
1187 int byte = bytestream2_get_byteu(&gb);
1188 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1190 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1193 } else if (avctx->codec->id == AV_CODEC_ID_ADPCM_SBPRO_3) {
1194 for (n = nb_samples / 3; n > 0; n--) {
1195 int byte = bytestream2_get_byteu(&gb);
1196 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1198 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1199 (byte >> 2) & 0x07, 3, 0);
1200 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1204 for (n = nb_samples >> (2 - st); n > 0; n--) {
1205 int byte = bytestream2_get_byteu(&gb);
1206 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1208 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1209 (byte >> 4) & 0x03, 2, 2);
1210 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1211 (byte >> 2) & 0x03, 2, 2);
1212 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1217 case AV_CODEC_ID_ADPCM_SWF:
1218 adpcm_swf_decode(avctx, buf, buf_size, samples);
1219 bytestream2_seek(&gb, 0, SEEK_END);
1221 case AV_CODEC_ID_ADPCM_YAMAHA:
1222 for (n = nb_samples >> (1 - st); n > 0; n--) {
1223 int v = bytestream2_get_byteu(&gb);
1224 *samples++ = adpcm_yamaha_expand_nibble(&c->status[0 ], v & 0x0F);
1225 *samples++ = adpcm_yamaha_expand_nibble(&c->status[st], v >> 4 );
1228 case AV_CODEC_ID_ADPCM_THP:
1234 for (i = 0; i < 2; i++)
1235 for (n = 0; n < 16; n++)
1236 table[i][n] = sign_extend(bytestream2_get_be16u(&gb), 16);
1238 /* Initialize the previous sample. */
1239 for (i = 0; i < 2; i++)
1240 for (n = 0; n < 2; n++)
1241 prev[i][n] = sign_extend(bytestream2_get_be16u(&gb), 16);
1243 for (ch = 0; ch <= st; ch++) {
1244 samples = samples_p[ch];
1246 /* Read in every sample for this channel. */
1247 for (i = 0; i < nb_samples / 14; i++) {
1248 int byte = bytestream2_get_byteu(&gb);
1249 int index = (byte >> 4) & 7;
1250 unsigned int exp = byte & 0x0F;
1251 int factor1 = table[ch][index * 2];
1252 int factor2 = table[ch][index * 2 + 1];
1254 /* Decode 14 samples. */
1255 for (n = 0; n < 14; n++) {
1259 sampledat = sign_extend(byte, 4);
1261 byte = bytestream2_get_byteu(&gb);
1262 sampledat = sign_extend(byte >> 4, 4);
1265 sampledat = ((prev[ch][0]*factor1
1266 + prev[ch][1]*factor2) >> 11) + (sampledat << exp);
1267 *samples = av_clip_int16(sampledat);
1268 prev[ch][1] = prev[ch][0];
1269 prev[ch][0] = *samples++;
1282 return bytestream2_tell(&gb);
1286 static const enum AVSampleFormat sample_fmts_s16[] = { AV_SAMPLE_FMT_S16,
1287 AV_SAMPLE_FMT_NONE };
1288 static const enum AVSampleFormat sample_fmts_s16p[] = { AV_SAMPLE_FMT_S16,
1289 AV_SAMPLE_FMT_NONE };
1290 static const enum AVSampleFormat sample_fmts_both[] = { AV_SAMPLE_FMT_S16,
1292 AV_SAMPLE_FMT_NONE };
1294 #define ADPCM_DECODER(id_, sample_fmts_, name_, long_name_) \
1295 AVCodec ff_ ## name_ ## _decoder = { \
1297 .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
1298 .type = AVMEDIA_TYPE_AUDIO, \
1300 .priv_data_size = sizeof(ADPCMDecodeContext), \
1301 .init = adpcm_decode_init, \
1302 .decode = adpcm_decode_frame, \
1303 .capabilities = AV_CODEC_CAP_DR1, \
1304 .sample_fmts = sample_fmts_, \
1307 /* Note: Do not forget to add new entries to the Makefile as well. */
1308 ADPCM_DECODER(AV_CODEC_ID_ADPCM_4XM, sample_fmts_s16p, adpcm_4xm, "ADPCM 4X Movie");
1309 ADPCM_DECODER(AV_CODEC_ID_ADPCM_CT, sample_fmts_s16, adpcm_ct, "ADPCM Creative Technology");
1310 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA, sample_fmts_s16, adpcm_ea, "ADPCM Electronic Arts");
1311 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_MAXIS_XA, sample_fmts_s16, adpcm_ea_maxis_xa, "ADPCM Electronic Arts Maxis CDROM XA");
1312 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R1, sample_fmts_s16p, adpcm_ea_r1, "ADPCM Electronic Arts R1");
1313 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R2, sample_fmts_s16p, adpcm_ea_r2, "ADPCM Electronic Arts R2");
1314 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R3, sample_fmts_s16p, adpcm_ea_r3, "ADPCM Electronic Arts R3");
1315 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_XAS, sample_fmts_s16p, adpcm_ea_xas, "ADPCM Electronic Arts XAS");
1316 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_AMV, sample_fmts_s16, adpcm_ima_amv, "ADPCM IMA AMV");
1317 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_APC, sample_fmts_s16, adpcm_ima_apc, "ADPCM IMA CRYO APC");
1318 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK3, sample_fmts_s16, adpcm_ima_dk3, "ADPCM IMA Duck DK3");
1319 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK4, sample_fmts_s16, adpcm_ima_dk4, "ADPCM IMA Duck DK4");
1320 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_EA_EACS, sample_fmts_s16, adpcm_ima_ea_eacs, "ADPCM IMA Electronic Arts EACS");
1321 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_EA_SEAD, sample_fmts_s16, adpcm_ima_ea_sead, "ADPCM IMA Electronic Arts SEAD");
1322 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_ISS, sample_fmts_s16, adpcm_ima_iss, "ADPCM IMA Funcom ISS");
1323 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_QT, sample_fmts_s16p, adpcm_ima_qt, "ADPCM IMA QuickTime");
1324 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_SMJPEG, sample_fmts_s16, adpcm_ima_smjpeg, "ADPCM IMA Loki SDL MJPEG");
1325 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WAV, sample_fmts_s16p, adpcm_ima_wav, "ADPCM IMA WAV");
1326 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WS, sample_fmts_both, adpcm_ima_ws, "ADPCM IMA Westwood");
1327 ADPCM_DECODER(AV_CODEC_ID_ADPCM_MS, sample_fmts_s16, adpcm_ms, "ADPCM Microsoft");
1328 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_2, sample_fmts_s16, adpcm_sbpro_2, "ADPCM Sound Blaster Pro 2-bit");
1329 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_3, sample_fmts_s16, adpcm_sbpro_3, "ADPCM Sound Blaster Pro 2.6-bit");
1330 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_4, sample_fmts_s16, adpcm_sbpro_4, "ADPCM Sound Blaster Pro 4-bit");
1331 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SWF, sample_fmts_s16, adpcm_swf, "ADPCM Shockwave Flash");
1332 ADPCM_DECODER(AV_CODEC_ID_ADPCM_THP, sample_fmts_s16p, adpcm_thp, "ADPCM Nintendo Gamecube THP");
1333 ADPCM_DECODER(AV_CODEC_ID_ADPCM_XA, sample_fmts_s16p, adpcm_xa, "ADPCM CDROM XA");
1334 ADPCM_DECODER(AV_CODEC_ID_ADPCM_YAMAHA, sample_fmts_s16, adpcm_yamaha, "ADPCM Yamaha");