2 * Copyright (c) 2001-2003 The ffmpeg Project
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "bytestream.h"
25 #include "adpcm_data.h"
30 * First version by Francois Revol (revol@free.fr)
31 * Fringe ADPCM codecs (e.g., DK3, DK4, Westwood)
32 * by Mike Melanson (melanson@pcisys.net)
33 * CD-ROM XA ADPCM codec by BERO
34 * EA ADPCM decoder by Robin Kay (komadori@myrealbox.com)
35 * EA ADPCM R1/R2/R3 decoder by Peter Ross (pross@xvid.org)
36 * EA IMA EACS decoder by Peter Ross (pross@xvid.org)
37 * EA IMA SEAD decoder by Peter Ross (pross@xvid.org)
38 * EA ADPCM XAS decoder by Peter Ross (pross@xvid.org)
39 * MAXIS EA ADPCM decoder by Robert Marston (rmarston@gmail.com)
40 * THP ADPCM decoder by Marco Gerards (mgerards@xs4all.nl)
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 int xa_adpcm_table[5][2] = {
68 static const int ea_adpcm_table[] = {
76 // padded to zero where table size is less then 16
77 static const int 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 {
88 ADPCMChannelStatus status[6];
89 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_EA:
102 case AV_CODEC_ID_ADPCM_EA_R1:
103 case AV_CODEC_ID_ADPCM_EA_R2:
104 case AV_CODEC_ID_ADPCM_EA_R3:
105 case AV_CODEC_ID_ADPCM_EA_XAS:
109 if (avctx->channels < min_channels || avctx->channels > max_channels) {
110 av_log(avctx, AV_LOG_ERROR, "Invalid number of channels\n");
111 return AVERROR(EINVAL);
114 switch(avctx->codec->id) {
115 case AV_CODEC_ID_ADPCM_CT:
116 c->status[0].step = c->status[1].step = 511;
118 case AV_CODEC_ID_ADPCM_IMA_WAV:
119 if (avctx->bits_per_coded_sample != 4) {
120 av_log(avctx, AV_LOG_ERROR, "Only 4-bit ADPCM IMA WAV files are supported\n");
124 case AV_CODEC_ID_ADPCM_IMA_APC:
125 if (avctx->extradata && avctx->extradata_size >= 8) {
126 c->status[0].predictor = AV_RL32(avctx->extradata);
127 c->status[1].predictor = AV_RL32(avctx->extradata + 4);
130 case AV_CODEC_ID_ADPCM_IMA_WS:
131 if (avctx->extradata && avctx->extradata_size >= 2)
132 c->vqa_version = AV_RL16(avctx->extradata);
137 avctx->sample_fmt = AV_SAMPLE_FMT_S16;
139 avcodec_get_frame_defaults(&c->frame);
140 avctx->coded_frame = &c->frame;
145 static inline short adpcm_ima_expand_nibble(ADPCMChannelStatus *c, char nibble, int shift)
149 int sign, delta, diff, step;
151 step = ff_adpcm_step_table[c->step_index];
152 step_index = c->step_index + ff_adpcm_index_table[(unsigned)nibble];
153 step_index = av_clip(step_index, 0, 88);
157 /* perform direct multiplication instead of series of jumps proposed by
158 * the reference ADPCM implementation since modern CPUs can do the mults
160 diff = ((2 * delta + 1) * step) >> shift;
161 predictor = c->predictor;
162 if (sign) predictor -= diff;
163 else predictor += diff;
165 c->predictor = av_clip_int16(predictor);
166 c->step_index = step_index;
168 return (short)c->predictor;
171 static inline int adpcm_ima_qt_expand_nibble(ADPCMChannelStatus *c, int nibble, int shift)
177 step = ff_adpcm_step_table[c->step_index];
178 step_index = c->step_index + ff_adpcm_index_table[nibble];
179 step_index = av_clip(step_index, 0, 88);
182 if (nibble & 4) diff += step;
183 if (nibble & 2) diff += step >> 1;
184 if (nibble & 1) diff += step >> 2;
187 predictor = c->predictor - diff;
189 predictor = c->predictor + diff;
191 c->predictor = av_clip_int16(predictor);
192 c->step_index = step_index;
197 static inline short adpcm_ms_expand_nibble(ADPCMChannelStatus *c, int nibble)
201 predictor = (((c->sample1) * (c->coeff1)) + ((c->sample2) * (c->coeff2))) / 64;
202 predictor += ((nibble & 0x08)?(nibble - 0x10):(nibble)) * c->idelta;
204 c->sample2 = c->sample1;
205 c->sample1 = av_clip_int16(predictor);
206 c->idelta = (ff_adpcm_AdaptationTable[(int)nibble] * c->idelta) >> 8;
207 if (c->idelta < 16) c->idelta = 16;
212 static inline short adpcm_ct_expand_nibble(ADPCMChannelStatus *c, char nibble)
214 int sign, delta, diff;
219 /* perform direct multiplication instead of series of jumps proposed by
220 * the reference ADPCM implementation since modern CPUs can do the mults
222 diff = ((2 * delta + 1) * c->step) >> 3;
223 /* predictor update is not so trivial: predictor is multiplied on 254/256 before updating */
224 c->predictor = ((c->predictor * 254) >> 8) + (sign ? -diff : diff);
225 c->predictor = av_clip_int16(c->predictor);
226 /* calculate new step and clamp it to range 511..32767 */
227 new_step = (ff_adpcm_AdaptationTable[nibble & 7] * c->step) >> 8;
228 c->step = av_clip(new_step, 511, 32767);
230 return (short)c->predictor;
233 static inline short adpcm_sbpro_expand_nibble(ADPCMChannelStatus *c, char nibble, int size, int shift)
235 int sign, delta, diff;
237 sign = nibble & (1<<(size-1));
238 delta = nibble & ((1<<(size-1))-1);
239 diff = delta << (7 + c->step + shift);
242 c->predictor = av_clip(c->predictor + (sign ? -diff : diff), -16384,16256);
244 /* calculate new step */
245 if (delta >= (2*size - 3) && c->step < 3)
247 else if (delta == 0 && c->step > 0)
250 return (short) c->predictor;
253 static inline short adpcm_yamaha_expand_nibble(ADPCMChannelStatus *c, unsigned char nibble)
260 c->predictor += (c->step * ff_adpcm_yamaha_difflookup[nibble]) / 8;
261 c->predictor = av_clip_int16(c->predictor);
262 c->step = (c->step * ff_adpcm_yamaha_indexscale[nibble]) >> 8;
263 c->step = av_clip(c->step, 127, 24567);
267 static int xa_decode(AVCodecContext *avctx,
268 short *out, const unsigned char *in,
269 ADPCMChannelStatus *left, ADPCMChannelStatus *right, int inc)
272 int shift,filter,f0,f1;
278 shift = 12 - (in[4+i*2] & 15);
279 filter = in[4+i*2] >> 4;
280 if (filter >= FF_ARRAY_ELEMS(xa_adpcm_table)) {
281 av_log_ask_for_sample(avctx, "unknown XA-ADPCM filter %d\n", filter);
284 f0 = xa_adpcm_table[filter][0];
285 f1 = xa_adpcm_table[filter][1];
293 t = sign_extend(d, 4);
294 s = ( t<<shift ) + ((s_1*f0 + s_2*f1+32)>>6);
296 s_1 = av_clip_int16(s);
301 if (inc==2) { /* stereo */
304 s_1 = right->sample1;
305 s_2 = right->sample2;
306 out = out + 1 - 28*2;
309 shift = 12 - (in[5+i*2] & 15);
310 filter = in[5+i*2] >> 4;
311 if (filter >= FF_ARRAY_ELEMS(xa_adpcm_table)) {
312 av_log_ask_for_sample(avctx, "unknown XA-ADPCM filter %d\n", filter);
316 f0 = xa_adpcm_table[filter][0];
317 f1 = xa_adpcm_table[filter][1];
322 t = sign_extend(d >> 4, 4);
323 s = ( t<<shift ) + ((s_1*f0 + s_2*f1+32)>>6);
325 s_1 = av_clip_int16(s);
330 if (inc==2) { /* stereo */
331 right->sample1 = s_1;
332 right->sample2 = s_2;
343 static void adpcm_swf_decode(AVCodecContext *avctx, const uint8_t *buf, int buf_size, int16_t *samples)
345 ADPCMDecodeContext *c = avctx->priv_data;
348 int k0, signmask, nb_bits, count;
349 int size = buf_size*8;
352 init_get_bits(&gb, buf, size);
354 //read bits & initial values
355 nb_bits = get_bits(&gb, 2)+2;
356 table = swf_index_tables[nb_bits-2];
357 k0 = 1 << (nb_bits-2);
358 signmask = 1 << (nb_bits-1);
360 while (get_bits_count(&gb) <= size - 22*avctx->channels) {
361 for (i = 0; i < avctx->channels; i++) {
362 *samples++ = c->status[i].predictor = get_sbits(&gb, 16);
363 c->status[i].step_index = get_bits(&gb, 6);
366 for (count = 0; get_bits_count(&gb) <= size - nb_bits*avctx->channels && count < 4095; count++) {
369 for (i = 0; i < avctx->channels; i++) {
370 // similar to IMA adpcm
371 int delta = get_bits(&gb, nb_bits);
372 int step = ff_adpcm_step_table[c->status[i].step_index];
373 long vpdiff = 0; // vpdiff = (delta+0.5)*step/4
384 if (delta & signmask)
385 c->status[i].predictor -= vpdiff;
387 c->status[i].predictor += vpdiff;
389 c->status[i].step_index += table[delta & (~signmask)];
391 c->status[i].step_index = av_clip(c->status[i].step_index, 0, 88);
392 c->status[i].predictor = av_clip_int16(c->status[i].predictor);
394 *samples++ = c->status[i].predictor;
401 * Get the number of samples that will be decoded from the packet.
402 * In one case, this is actually the maximum number of samples possible to
403 * decode with the given buf_size.
405 * @param[out] coded_samples set to the number of samples as coded in the
406 * packet, or 0 if the codec does not encode the
407 * number of samples in each frame.
409 static int get_nb_samples(AVCodecContext *avctx, GetByteContext *gb,
410 int buf_size, int *coded_samples)
412 ADPCMDecodeContext *s = avctx->priv_data;
414 int ch = avctx->channels;
415 int has_coded_samples = 0;
423 switch (avctx->codec->id) {
424 /* constant, only check buf_size */
425 case AV_CODEC_ID_ADPCM_EA_XAS:
426 if (buf_size < 76 * ch)
430 case AV_CODEC_ID_ADPCM_IMA_QT:
431 if (buf_size < 34 * ch)
435 /* simple 4-bit adpcm */
436 case AV_CODEC_ID_ADPCM_CT:
437 case AV_CODEC_ID_ADPCM_IMA_APC:
438 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
439 case AV_CODEC_ID_ADPCM_IMA_WS:
440 case AV_CODEC_ID_ADPCM_YAMAHA:
441 nb_samples = buf_size * 2 / ch;
447 /* simple 4-bit adpcm, with header */
449 switch (avctx->codec->id) {
450 case AV_CODEC_ID_ADPCM_4XM:
451 case AV_CODEC_ID_ADPCM_IMA_ISS: header_size = 4 * ch; break;
452 case AV_CODEC_ID_ADPCM_IMA_AMV: header_size = 8; break;
453 case AV_CODEC_ID_ADPCM_IMA_SMJPEG: header_size = 4; break;
456 return (buf_size - header_size) * 2 / ch;
458 /* more complex formats */
459 switch (avctx->codec->id) {
460 case AV_CODEC_ID_ADPCM_EA:
461 has_coded_samples = 1;
462 *coded_samples = bytestream2_get_le32(gb);
463 *coded_samples -= *coded_samples % 28;
464 nb_samples = (buf_size - 12) / 30 * 28;
466 case AV_CODEC_ID_ADPCM_IMA_EA_EACS:
467 has_coded_samples = 1;
468 *coded_samples = bytestream2_get_le32(gb);
469 nb_samples = (buf_size - (4 + 8 * ch)) * 2 / ch;
471 case AV_CODEC_ID_ADPCM_EA_MAXIS_XA:
472 nb_samples = (buf_size - ch) / ch * 2;
474 case AV_CODEC_ID_ADPCM_EA_R1:
475 case AV_CODEC_ID_ADPCM_EA_R2:
476 case AV_CODEC_ID_ADPCM_EA_R3:
477 /* maximum number of samples */
478 /* has internal offsets and a per-frame switch to signal raw 16-bit */
479 has_coded_samples = 1;
480 switch (avctx->codec->id) {
481 case AV_CODEC_ID_ADPCM_EA_R1:
482 header_size = 4 + 9 * ch;
483 *coded_samples = bytestream2_get_le32(gb);
485 case AV_CODEC_ID_ADPCM_EA_R2:
486 header_size = 4 + 5 * ch;
487 *coded_samples = bytestream2_get_le32(gb);
489 case AV_CODEC_ID_ADPCM_EA_R3:
490 header_size = 4 + 5 * ch;
491 *coded_samples = bytestream2_get_be32(gb);
494 *coded_samples -= *coded_samples % 28;
495 nb_samples = (buf_size - header_size) * 2 / ch;
496 nb_samples -= nb_samples % 28;
498 case AV_CODEC_ID_ADPCM_IMA_DK3:
499 if (avctx->block_align > 0)
500 buf_size = FFMIN(buf_size, avctx->block_align);
501 nb_samples = ((buf_size - 16) * 2 / 3 * 4) / ch;
503 case AV_CODEC_ID_ADPCM_IMA_DK4:
504 if (avctx->block_align > 0)
505 buf_size = FFMIN(buf_size, avctx->block_align);
506 nb_samples = 1 + (buf_size - 4 * ch) * 2 / ch;
508 case AV_CODEC_ID_ADPCM_IMA_WAV:
509 if (avctx->block_align > 0)
510 buf_size = FFMIN(buf_size, avctx->block_align);
511 nb_samples = 1 + (buf_size - 4 * ch) / (4 * ch) * 8;
513 case AV_CODEC_ID_ADPCM_MS:
514 if (avctx->block_align > 0)
515 buf_size = FFMIN(buf_size, avctx->block_align);
516 nb_samples = 2 + (buf_size - 7 * ch) * 2 / ch;
518 case AV_CODEC_ID_ADPCM_SBPRO_2:
519 case AV_CODEC_ID_ADPCM_SBPRO_3:
520 case AV_CODEC_ID_ADPCM_SBPRO_4:
522 int samples_per_byte;
523 switch (avctx->codec->id) {
524 case AV_CODEC_ID_ADPCM_SBPRO_2: samples_per_byte = 4; break;
525 case AV_CODEC_ID_ADPCM_SBPRO_3: samples_per_byte = 3; break;
526 case AV_CODEC_ID_ADPCM_SBPRO_4: samples_per_byte = 2; break;
528 if (!s->status[0].step_index) {
532 nb_samples += buf_size * samples_per_byte / ch;
535 case AV_CODEC_ID_ADPCM_SWF:
537 int buf_bits = buf_size * 8 - 2;
538 int nbits = (bytestream2_get_byte(gb) >> 6) + 2;
539 int block_hdr_size = 22 * ch;
540 int block_size = block_hdr_size + nbits * ch * 4095;
541 int nblocks = buf_bits / block_size;
542 int bits_left = buf_bits - nblocks * block_size;
543 nb_samples = nblocks * 4096;
544 if (bits_left >= block_hdr_size)
545 nb_samples += 1 + (bits_left - block_hdr_size) / (nbits * ch);
548 case AV_CODEC_ID_ADPCM_THP:
549 has_coded_samples = 1;
550 bytestream2_skip(gb, 4); // channel size
551 *coded_samples = bytestream2_get_be32(gb);
552 *coded_samples -= *coded_samples % 14;
553 nb_samples = (buf_size - 80) / (8 * ch) * 14;
555 case AV_CODEC_ID_ADPCM_XA:
556 nb_samples = (buf_size / 128) * 224 / ch;
560 /* validate coded sample count */
561 if (has_coded_samples && (*coded_samples <= 0 || *coded_samples > nb_samples))
562 return AVERROR_INVALIDDATA;
567 static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
568 int *got_frame_ptr, AVPacket *avpkt)
570 const uint8_t *buf = avpkt->data;
571 int buf_size = avpkt->size;
572 ADPCMDecodeContext *c = avctx->priv_data;
573 ADPCMChannelStatus *cs;
574 int n, m, channel, i;
578 int nb_samples, coded_samples, ret;
581 bytestream2_init(&gb, buf, buf_size);
582 nb_samples = get_nb_samples(avctx, &gb, buf_size, &coded_samples);
583 if (nb_samples <= 0) {
584 av_log(avctx, AV_LOG_ERROR, "invalid number of samples in packet\n");
585 return AVERROR_INVALIDDATA;
588 /* get output buffer */
589 c->frame.nb_samples = nb_samples;
590 if ((ret = avctx->get_buffer(avctx, &c->frame)) < 0) {
591 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
594 samples = (short *)c->frame.data[0];
596 /* use coded_samples when applicable */
597 /* it is always <= nb_samples, so the output buffer will be large enough */
599 if (coded_samples != nb_samples)
600 av_log(avctx, AV_LOG_WARNING, "mismatch in coded sample count\n");
601 c->frame.nb_samples = nb_samples = coded_samples;
604 st = avctx->channels == 2 ? 1 : 0;
606 switch(avctx->codec->id) {
607 case AV_CODEC_ID_ADPCM_IMA_QT:
608 /* In QuickTime, IMA is encoded by chunks of 34 bytes (=64 samples).
609 Channel data is interleaved per-chunk. */
610 for (channel = 0; channel < avctx->channels; channel++) {
613 cs = &(c->status[channel]);
614 /* (pppppp) (piiiiiii) */
616 /* Bits 15-7 are the _top_ 9 bits of the 16-bit initial predictor value */
617 predictor = sign_extend(bytestream2_get_be16u(&gb), 16);
618 step_index = predictor & 0x7F;
621 if (cs->step_index == step_index) {
622 int diff = predictor - cs->predictor;
629 cs->step_index = step_index;
630 cs->predictor = predictor;
633 if (cs->step_index > 88u){
634 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
635 channel, cs->step_index);
636 return AVERROR_INVALIDDATA;
639 samples = (short *)c->frame.data[0] + channel;
641 for (m = 0; m < 32; m++) {
642 int byte = bytestream2_get_byteu(&gb);
643 *samples = adpcm_ima_qt_expand_nibble(cs, byte & 0x0F, 3);
644 samples += avctx->channels;
645 *samples = adpcm_ima_qt_expand_nibble(cs, byte >> 4 , 3);
646 samples += avctx->channels;
650 case AV_CODEC_ID_ADPCM_IMA_WAV:
651 for(i=0; i<avctx->channels; i++){
652 cs = &(c->status[i]);
653 cs->predictor = *samples++ = sign_extend(bytestream2_get_le16u(&gb), 16);
655 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
656 if (cs->step_index > 88u){
657 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
659 return AVERROR_INVALIDDATA;
663 for (n = (nb_samples - 1) / 8; n > 0; n--) {
664 for (i = 0; i < avctx->channels; i++) {
666 for (m = 0; m < 4; m++) {
667 int v = bytestream2_get_byteu(&gb);
668 *samples = adpcm_ima_expand_nibble(cs, v & 0x0F, 3);
669 samples += avctx->channels;
670 *samples = adpcm_ima_expand_nibble(cs, v >> 4 , 3);
671 samples += avctx->channels;
673 samples -= 8 * avctx->channels - 1;
675 samples += 7 * avctx->channels;
678 case AV_CODEC_ID_ADPCM_4XM:
679 for (i = 0; i < avctx->channels; i++)
680 c->status[i].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
682 for (i = 0; i < avctx->channels; i++) {
683 c->status[i].step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
684 if (c->status[i].step_index > 88u) {
685 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
686 i, c->status[i].step_index);
687 return AVERROR_INVALIDDATA;
691 for (i = 0; i < avctx->channels; i++) {
692 samples = (short *)c->frame.data[0] + i;
694 for (n = nb_samples >> 1; n > 0; n--) {
695 int v = bytestream2_get_byteu(&gb);
696 *samples = adpcm_ima_expand_nibble(cs, v & 0x0F, 4);
697 samples += avctx->channels;
698 *samples = adpcm_ima_expand_nibble(cs, v >> 4 , 4);
699 samples += avctx->channels;
703 case AV_CODEC_ID_ADPCM_MS:
707 block_predictor = bytestream2_get_byteu(&gb);
708 if (block_predictor > 6) {
709 av_log(avctx, AV_LOG_ERROR, "ERROR: block_predictor[0] = %d\n",
711 return AVERROR_INVALIDDATA;
713 c->status[0].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
714 c->status[0].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
716 block_predictor = bytestream2_get_byteu(&gb);
717 if (block_predictor > 6) {
718 av_log(avctx, AV_LOG_ERROR, "ERROR: block_predictor[1] = %d\n",
720 return AVERROR_INVALIDDATA;
722 c->status[1].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
723 c->status[1].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
725 c->status[0].idelta = sign_extend(bytestream2_get_le16u(&gb), 16);
727 c->status[1].idelta = sign_extend(bytestream2_get_le16u(&gb), 16);
730 c->status[0].sample1 = sign_extend(bytestream2_get_le16u(&gb), 16);
731 if (st) c->status[1].sample1 = sign_extend(bytestream2_get_le16u(&gb), 16);
732 c->status[0].sample2 = sign_extend(bytestream2_get_le16u(&gb), 16);
733 if (st) c->status[1].sample2 = sign_extend(bytestream2_get_le16u(&gb), 16);
735 *samples++ = c->status[0].sample2;
736 if (st) *samples++ = c->status[1].sample2;
737 *samples++ = c->status[0].sample1;
738 if (st) *samples++ = c->status[1].sample1;
739 for(n = (nb_samples - 2) >> (1 - st); n > 0; n--) {
740 int byte = bytestream2_get_byteu(&gb);
741 *samples++ = adpcm_ms_expand_nibble(&c->status[0 ], byte >> 4 );
742 *samples++ = adpcm_ms_expand_nibble(&c->status[st], byte & 0x0F);
746 case AV_CODEC_ID_ADPCM_IMA_DK4:
747 for (channel = 0; channel < avctx->channels; channel++) {
748 cs = &c->status[channel];
749 cs->predictor = *samples++ = sign_extend(bytestream2_get_le16u(&gb), 16);
750 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
751 if (cs->step_index > 88u){
752 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
753 channel, cs->step_index);
754 return AVERROR_INVALIDDATA;
757 for (n = nb_samples >> (1 - st); n > 0; n--) {
758 int v = bytestream2_get_byteu(&gb);
759 *samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v >> 4 , 3);
760 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
763 case AV_CODEC_ID_ADPCM_IMA_DK3:
767 int decode_top_nibble_next = 0;
769 const int16_t *samples_end = samples + avctx->channels * nb_samples;
771 bytestream2_skipu(&gb, 10);
772 c->status[0].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
773 c->status[1].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
774 c->status[0].step_index = bytestream2_get_byteu(&gb);
775 c->status[1].step_index = bytestream2_get_byteu(&gb);
776 if (c->status[0].step_index > 88u || c->status[1].step_index > 88u){
777 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i/%i\n",
778 c->status[0].step_index, c->status[1].step_index);
779 return AVERROR_INVALIDDATA;
781 /* sign extend the predictors */
782 diff_channel = c->status[1].predictor;
784 /* DK3 ADPCM support macro */
785 #define DK3_GET_NEXT_NIBBLE() \
786 if (decode_top_nibble_next) { \
787 nibble = last_byte >> 4; \
788 decode_top_nibble_next = 0; \
790 last_byte = bytestream2_get_byteu(&gb); \
791 nibble = last_byte & 0x0F; \
792 decode_top_nibble_next = 1; \
795 while (samples < samples_end) {
797 /* for this algorithm, c->status[0] is the sum channel and
798 * c->status[1] is the diff channel */
800 /* process the first predictor of the sum channel */
801 DK3_GET_NEXT_NIBBLE();
802 adpcm_ima_expand_nibble(&c->status[0], nibble, 3);
804 /* process the diff channel predictor */
805 DK3_GET_NEXT_NIBBLE();
806 adpcm_ima_expand_nibble(&c->status[1], nibble, 3);
808 /* process the first pair of stereo PCM samples */
809 diff_channel = (diff_channel + c->status[1].predictor) / 2;
810 *samples++ = c->status[0].predictor + c->status[1].predictor;
811 *samples++ = c->status[0].predictor - c->status[1].predictor;
813 /* process the second predictor of the sum channel */
814 DK3_GET_NEXT_NIBBLE();
815 adpcm_ima_expand_nibble(&c->status[0], nibble, 3);
817 /* process the second pair of stereo PCM samples */
818 diff_channel = (diff_channel + c->status[1].predictor) / 2;
819 *samples++ = c->status[0].predictor + c->status[1].predictor;
820 *samples++ = c->status[0].predictor - c->status[1].predictor;
824 case AV_CODEC_ID_ADPCM_IMA_ISS:
825 for (channel = 0; channel < avctx->channels; channel++) {
826 cs = &c->status[channel];
827 cs->predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
828 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
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;
836 for (n = nb_samples >> (1 - st); n > 0; n--) {
838 int v = bytestream2_get_byteu(&gb);
839 /* nibbles are swapped for mono */
847 *samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v1, 3);
848 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v2, 3);
851 case AV_CODEC_ID_ADPCM_IMA_APC:
852 while (bytestream2_get_bytes_left(&gb) > 0) {
853 int v = bytestream2_get_byteu(&gb);
854 *samples++ = adpcm_ima_expand_nibble(&c->status[0], v >> 4 , 3);
855 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
858 case AV_CODEC_ID_ADPCM_IMA_WS:
859 if (c->vqa_version == 3) {
860 for (channel = 0; channel < avctx->channels; channel++) {
861 int16_t *smp = samples + channel;
863 for (n = nb_samples / 2; n > 0; n--) {
864 int v = bytestream2_get_byteu(&gb);
865 *smp = adpcm_ima_expand_nibble(&c->status[channel], v >> 4 , 3);
866 smp += avctx->channels;
867 *smp = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
868 smp += avctx->channels;
872 for (n = nb_samples / 2; n > 0; n--) {
873 for (channel = 0; channel < avctx->channels; channel++) {
874 int v = bytestream2_get_byteu(&gb);
875 *samples++ = adpcm_ima_expand_nibble(&c->status[channel], v >> 4 , 3);
876 samples[st] = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
878 samples += avctx->channels;
881 bytestream2_seek(&gb, 0, SEEK_END);
883 case AV_CODEC_ID_ADPCM_XA:
884 while (bytestream2_get_bytes_left(&gb) >= 128) {
885 if ((ret = xa_decode(avctx, samples, buf + bytestream2_tell(&gb), &c->status[0],
886 &c->status[1], avctx->channels)) < 0)
888 bytestream2_skipu(&gb, 128);
892 case AV_CODEC_ID_ADPCM_IMA_EA_EACS:
893 for (i=0; i<=st; i++) {
894 c->status[i].step_index = bytestream2_get_le32u(&gb);
895 if (c->status[i].step_index > 88u) {
896 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
897 i, c->status[i].step_index);
898 return AVERROR_INVALIDDATA;
901 for (i=0; i<=st; i++)
902 c->status[i].predictor = bytestream2_get_le32u(&gb);
904 for (n = nb_samples >> (1 - st); n > 0; n--) {
905 int byte = bytestream2_get_byteu(&gb);
906 *samples++ = adpcm_ima_expand_nibble(&c->status[0], byte >> 4, 3);
907 *samples++ = adpcm_ima_expand_nibble(&c->status[st], byte & 0x0F, 3);
910 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
911 for (n = nb_samples >> (1 - st); n > 0; n--) {
912 int byte = bytestream2_get_byteu(&gb);
913 *samples++ = adpcm_ima_expand_nibble(&c->status[0], byte >> 4, 6);
914 *samples++ = adpcm_ima_expand_nibble(&c->status[st], byte & 0x0F, 6);
917 case AV_CODEC_ID_ADPCM_EA:
919 int previous_left_sample, previous_right_sample;
920 int current_left_sample, current_right_sample;
921 int next_left_sample, next_right_sample;
922 int coeff1l, coeff2l, coeff1r, coeff2r;
923 int shift_left, shift_right;
925 /* Each EA ADPCM frame has a 12-byte header followed by 30-byte pieces,
926 each coding 28 stereo samples. */
928 if(avctx->channels != 2)
929 return AVERROR_INVALIDDATA;
931 current_left_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
932 previous_left_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
933 current_right_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
934 previous_right_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
936 for (count1 = 0; count1 < nb_samples / 28; count1++) {
937 int byte = bytestream2_get_byteu(&gb);
938 coeff1l = ea_adpcm_table[ byte >> 4 ];
939 coeff2l = ea_adpcm_table[(byte >> 4 ) + 4];
940 coeff1r = ea_adpcm_table[ byte & 0x0F];
941 coeff2r = ea_adpcm_table[(byte & 0x0F) + 4];
943 byte = bytestream2_get_byteu(&gb);
944 shift_left = 20 - (byte >> 4);
945 shift_right = 20 - (byte & 0x0F);
947 for (count2 = 0; count2 < 28; count2++) {
948 byte = bytestream2_get_byteu(&gb);
949 next_left_sample = sign_extend(byte >> 4, 4) << shift_left;
950 next_right_sample = sign_extend(byte, 4) << shift_right;
952 next_left_sample = (next_left_sample +
953 (current_left_sample * coeff1l) +
954 (previous_left_sample * coeff2l) + 0x80) >> 8;
955 next_right_sample = (next_right_sample +
956 (current_right_sample * coeff1r) +
957 (previous_right_sample * coeff2r) + 0x80) >> 8;
959 previous_left_sample = current_left_sample;
960 current_left_sample = av_clip_int16(next_left_sample);
961 previous_right_sample = current_right_sample;
962 current_right_sample = av_clip_int16(next_right_sample);
963 *samples++ = current_left_sample;
964 *samples++ = current_right_sample;
968 bytestream2_skip(&gb, 2); // Skip terminating 0x0000
972 case AV_CODEC_ID_ADPCM_EA_MAXIS_XA:
974 int coeff[2][2], shift[2];
976 for(channel = 0; channel < avctx->channels; channel++) {
977 int byte = bytestream2_get_byteu(&gb);
979 coeff[channel][i] = ea_adpcm_table[(byte >> 4) + 4*i];
980 shift[channel] = 20 - (byte & 0x0F);
982 for (count1 = 0; count1 < nb_samples / 2; count1++) {
985 byte[0] = bytestream2_get_byteu(&gb);
986 if (st) byte[1] = bytestream2_get_byteu(&gb);
987 for(i = 4; i >= 0; i-=4) { /* Pairwise samples LL RR (st) or LL LL (mono) */
988 for(channel = 0; channel < avctx->channels; channel++) {
989 int sample = sign_extend(byte[channel] >> i, 4) << shift[channel];
991 c->status[channel].sample1 * coeff[channel][0] +
992 c->status[channel].sample2 * coeff[channel][1] + 0x80) >> 8;
993 c->status[channel].sample2 = c->status[channel].sample1;
994 c->status[channel].sample1 = av_clip_int16(sample);
995 *samples++ = c->status[channel].sample1;
999 bytestream2_seek(&gb, 0, SEEK_END);
1002 case AV_CODEC_ID_ADPCM_EA_R1:
1003 case AV_CODEC_ID_ADPCM_EA_R2:
1004 case AV_CODEC_ID_ADPCM_EA_R3: {
1005 /* channel numbering
1007 4chan: 0=fl, 1=rl, 2=fr, 3=rr
1008 6chan: 0=fl, 1=c, 2=fr, 3=rl, 4=rr, 5=sub */
1009 const int big_endian = avctx->codec->id == AV_CODEC_ID_ADPCM_EA_R3;
1010 int previous_sample, current_sample, next_sample;
1013 unsigned int channel;
1018 for (channel=0; channel<avctx->channels; channel++)
1019 offsets[channel] = (big_endian ? bytestream2_get_be32(&gb) :
1020 bytestream2_get_le32(&gb)) +
1021 (avctx->channels + 1) * 4;
1023 for (channel=0; channel<avctx->channels; channel++) {
1024 bytestream2_seek(&gb, offsets[channel], SEEK_SET);
1025 samplesC = samples + channel;
1027 if (avctx->codec->id == AV_CODEC_ID_ADPCM_EA_R1) {
1028 current_sample = sign_extend(bytestream2_get_le16(&gb), 16);
1029 previous_sample = sign_extend(bytestream2_get_le16(&gb), 16);
1031 current_sample = c->status[channel].predictor;
1032 previous_sample = c->status[channel].prev_sample;
1035 for (count1 = 0; count1 < nb_samples / 28; count1++) {
1036 int byte = bytestream2_get_byte(&gb);
1037 if (byte == 0xEE) { /* only seen in R2 and R3 */
1038 current_sample = sign_extend(bytestream2_get_be16(&gb), 16);
1039 previous_sample = sign_extend(bytestream2_get_be16(&gb), 16);
1041 for (count2=0; count2<28; count2++) {
1042 *samplesC = sign_extend(bytestream2_get_be16(&gb), 16);
1043 samplesC += avctx->channels;
1046 coeff1 = ea_adpcm_table[ byte >> 4 ];
1047 coeff2 = ea_adpcm_table[(byte >> 4) + 4];
1048 shift = 20 - (byte & 0x0F);
1050 for (count2=0; count2<28; count2++) {
1052 next_sample = sign_extend(byte, 4) << shift;
1054 byte = bytestream2_get_byte(&gb);
1055 next_sample = sign_extend(byte >> 4, 4) << shift;
1058 next_sample += (current_sample * coeff1) +
1059 (previous_sample * coeff2);
1060 next_sample = av_clip_int16(next_sample >> 8);
1062 previous_sample = current_sample;
1063 current_sample = next_sample;
1064 *samplesC = current_sample;
1065 samplesC += avctx->channels;
1071 } else if (count != count1) {
1072 av_log(avctx, AV_LOG_WARNING, "per-channel sample count mismatch\n");
1073 count = FFMAX(count, count1);
1076 if (avctx->codec->id != AV_CODEC_ID_ADPCM_EA_R1) {
1077 c->status[channel].predictor = current_sample;
1078 c->status[channel].prev_sample = previous_sample;
1082 c->frame.nb_samples = count * 28;
1083 bytestream2_seek(&gb, 0, SEEK_END);
1086 case AV_CODEC_ID_ADPCM_EA_XAS:
1087 for (channel=0; channel<avctx->channels; channel++) {
1088 int coeff[2][4], shift[4];
1089 short *s2, *s = &samples[channel];
1090 for (n=0; n<4; n++, s+=32*avctx->channels) {
1091 int val = sign_extend(bytestream2_get_le16u(&gb), 16);
1093 coeff[i][n] = ea_adpcm_table[(val&0x0F)+4*i];
1096 val = sign_extend(bytestream2_get_le16u(&gb), 16);
1097 shift[n] = 20 - (val & 0x0F);
1098 s[avctx->channels] = val & ~0x0F;
1101 for (m=2; m<32; m+=2) {
1102 s = &samples[m*avctx->channels + channel];
1103 for (n=0; n<4; n++, s+=32*avctx->channels) {
1104 int byte = bytestream2_get_byteu(&gb);
1105 for (s2=s, i=0; i<8; i+=4, s2+=avctx->channels) {
1106 int level = sign_extend(byte >> (4 - i), 4) << shift[n];
1107 int pred = s2[-1*avctx->channels] * coeff[0][n]
1108 + s2[-2*avctx->channels] * coeff[1][n];
1109 s2[0] = av_clip_int16((level + pred + 0x80) >> 8);
1115 case AV_CODEC_ID_ADPCM_IMA_AMV:
1116 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
1117 if (avctx->codec->id == AV_CODEC_ID_ADPCM_IMA_AMV) {
1118 c->status[0].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1119 c->status[0].step_index = bytestream2_get_le16u(&gb);
1120 bytestream2_skipu(&gb, 4);
1122 c->status[0].predictor = sign_extend(bytestream2_get_be16u(&gb), 16);
1123 c->status[0].step_index = bytestream2_get_byteu(&gb);
1124 bytestream2_skipu(&gb, 1);
1126 if (c->status[0].step_index > 88u) {
1127 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i\n",
1128 c->status[0].step_index);
1129 return AVERROR_INVALIDDATA;
1132 for (n = nb_samples >> (1 - st); n > 0; n--) {
1133 int hi, lo, v = bytestream2_get_byteu(&gb);
1135 if (avctx->codec->id == AV_CODEC_ID_ADPCM_IMA_AMV) {
1143 *samples++ = adpcm_ima_expand_nibble(&c->status[0], lo, 3);
1144 *samples++ = adpcm_ima_expand_nibble(&c->status[0], hi, 3);
1147 case AV_CODEC_ID_ADPCM_CT:
1148 for (n = nb_samples >> (1 - st); n > 0; n--) {
1149 int v = bytestream2_get_byteu(&gb);
1150 *samples++ = adpcm_ct_expand_nibble(&c->status[0 ], v >> 4 );
1151 *samples++ = adpcm_ct_expand_nibble(&c->status[st], v & 0x0F);
1154 case AV_CODEC_ID_ADPCM_SBPRO_4:
1155 case AV_CODEC_ID_ADPCM_SBPRO_3:
1156 case AV_CODEC_ID_ADPCM_SBPRO_2:
1157 if (!c->status[0].step_index) {
1158 /* the first byte is a raw sample */
1159 *samples++ = 128 * (bytestream2_get_byteu(&gb) - 0x80);
1161 *samples++ = 128 * (bytestream2_get_byteu(&gb) - 0x80);
1162 c->status[0].step_index = 1;
1165 if (avctx->codec->id == AV_CODEC_ID_ADPCM_SBPRO_4) {
1166 for (n = nb_samples >> (1 - st); n > 0; n--) {
1167 int byte = bytestream2_get_byteu(&gb);
1168 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1170 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1173 } else if (avctx->codec->id == AV_CODEC_ID_ADPCM_SBPRO_3) {
1174 for (n = nb_samples / 3; n > 0; n--) {
1175 int byte = bytestream2_get_byteu(&gb);
1176 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1178 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1179 (byte >> 2) & 0x07, 3, 0);
1180 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1184 for (n = nb_samples >> (2 - st); n > 0; n--) {
1185 int byte = bytestream2_get_byteu(&gb);
1186 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1188 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1189 (byte >> 4) & 0x03, 2, 2);
1190 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1191 (byte >> 2) & 0x03, 2, 2);
1192 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1197 case AV_CODEC_ID_ADPCM_SWF:
1198 adpcm_swf_decode(avctx, buf, buf_size, samples);
1199 bytestream2_seek(&gb, 0, SEEK_END);
1201 case AV_CODEC_ID_ADPCM_YAMAHA:
1202 for (n = nb_samples >> (1 - st); n > 0; n--) {
1203 int v = bytestream2_get_byteu(&gb);
1204 *samples++ = adpcm_yamaha_expand_nibble(&c->status[0 ], v & 0x0F);
1205 *samples++ = adpcm_yamaha_expand_nibble(&c->status[st], v >> 4 );
1208 case AV_CODEC_ID_ADPCM_THP:
1214 for (i = 0; i < 2; i++)
1215 for (n = 0; n < 16; n++)
1216 table[i][n] = sign_extend(bytestream2_get_be16u(&gb), 16);
1218 /* Initialize the previous sample. */
1219 for (i = 0; i < 2; i++)
1220 for (n = 0; n < 2; n++)
1221 prev[i][n] = sign_extend(bytestream2_get_be16u(&gb), 16);
1223 for (ch = 0; ch <= st; ch++) {
1224 samples = (short *)c->frame.data[0] + ch;
1226 /* Read in every sample for this channel. */
1227 for (i = 0; i < nb_samples / 14; i++) {
1228 int byte = bytestream2_get_byteu(&gb);
1229 int index = (byte >> 4) & 7;
1230 unsigned int exp = byte & 0x0F;
1231 int factor1 = table[ch][index * 2];
1232 int factor2 = table[ch][index * 2 + 1];
1234 /* Decode 14 samples. */
1235 for (n = 0; n < 14; n++) {
1239 sampledat = sign_extend(byte, 4);
1241 byte = bytestream2_get_byteu(&gb);
1242 sampledat = sign_extend(byte >> 4, 4);
1245 sampledat = ((prev[ch][0]*factor1
1246 + prev[ch][1]*factor2) >> 11) + (sampledat << exp);
1247 *samples = av_clip_int16(sampledat);
1248 prev[ch][1] = prev[ch][0];
1249 prev[ch][0] = *samples++;
1251 /* In case of stereo, skip one sample, this sample
1252 is for the other channel. */
1265 *(AVFrame *)data = c->frame;
1267 return bytestream2_tell(&gb);
1271 static const enum AVSampleFormat sample_fmts_s16[] = { AV_SAMPLE_FMT_S16,
1272 AV_SAMPLE_FMT_NONE };
1274 #define ADPCM_DECODER(id_, sample_fmts_, name_, long_name_) \
1275 AVCodec ff_ ## name_ ## _decoder = { \
1277 .type = AVMEDIA_TYPE_AUDIO, \
1279 .priv_data_size = sizeof(ADPCMDecodeContext), \
1280 .init = adpcm_decode_init, \
1281 .decode = adpcm_decode_frame, \
1282 .capabilities = CODEC_CAP_DR1, \
1283 .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
1284 .sample_fmts = sample_fmts_, \
1287 /* Note: Do not forget to add new entries to the Makefile as well. */
1288 ADPCM_DECODER(AV_CODEC_ID_ADPCM_4XM, sample_fmts_s16, adpcm_4xm, "ADPCM 4X Movie");
1289 ADPCM_DECODER(AV_CODEC_ID_ADPCM_CT, sample_fmts_s16, adpcm_ct, "ADPCM Creative Technology");
1290 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA, sample_fmts_s16, adpcm_ea, "ADPCM Electronic Arts");
1291 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_MAXIS_XA, sample_fmts_s16, adpcm_ea_maxis_xa, "ADPCM Electronic Arts Maxis CDROM XA");
1292 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R1, sample_fmts_s16, adpcm_ea_r1, "ADPCM Electronic Arts R1");
1293 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R2, sample_fmts_s16, adpcm_ea_r2, "ADPCM Electronic Arts R2");
1294 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R3, sample_fmts_s16, adpcm_ea_r3, "ADPCM Electronic Arts R3");
1295 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_XAS, sample_fmts_s16, adpcm_ea_xas, "ADPCM Electronic Arts XAS");
1296 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_AMV, sample_fmts_s16, adpcm_ima_amv, "ADPCM IMA AMV");
1297 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_APC, sample_fmts_s16, adpcm_ima_apc, "ADPCM IMA CRYO APC");
1298 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK3, sample_fmts_s16, adpcm_ima_dk3, "ADPCM IMA Duck DK3");
1299 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK4, sample_fmts_s16, adpcm_ima_dk4, "ADPCM IMA Duck DK4");
1300 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_EA_EACS, sample_fmts_s16, adpcm_ima_ea_eacs, "ADPCM IMA Electronic Arts EACS");
1301 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_EA_SEAD, sample_fmts_s16, adpcm_ima_ea_sead, "ADPCM IMA Electronic Arts SEAD");
1302 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_ISS, sample_fmts_s16, adpcm_ima_iss, "ADPCM IMA Funcom ISS");
1303 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_QT, sample_fmts_s16, adpcm_ima_qt, "ADPCM IMA QuickTime");
1304 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_SMJPEG, sample_fmts_s16, adpcm_ima_smjpeg, "ADPCM IMA Loki SDL MJPEG");
1305 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WAV, sample_fmts_s16, adpcm_ima_wav, "ADPCM IMA WAV");
1306 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WS, sample_fmts_s16, adpcm_ima_ws, "ADPCM IMA Westwood");
1307 ADPCM_DECODER(AV_CODEC_ID_ADPCM_MS, sample_fmts_s16, adpcm_ms, "ADPCM Microsoft");
1308 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_2, sample_fmts_s16, adpcm_sbpro_2, "ADPCM Sound Blaster Pro 2-bit");
1309 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_3, sample_fmts_s16, adpcm_sbpro_3, "ADPCM Sound Blaster Pro 2.6-bit");
1310 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_4, sample_fmts_s16, adpcm_sbpro_4, "ADPCM Sound Blaster Pro 4-bit");
1311 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SWF, sample_fmts_s16, adpcm_swf, "ADPCM Shockwave Flash");
1312 ADPCM_DECODER(AV_CODEC_ID_ADPCM_THP, sample_fmts_s16, adpcm_thp, "ADPCM Nintendo Gamecube THP");
1313 ADPCM_DECODER(AV_CODEC_ID_ADPCM_XA, sample_fmts_s16, adpcm_xa, "ADPCM CDROM XA");
1314 ADPCM_DECODER(AV_CODEC_ID_ADPCM_YAMAHA, sample_fmts_s16, adpcm_yamaha, "ADPCM Yamaha");