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 //av_log(NULL,AV_LOG_INFO,"nb_bits: %d\n", nb_bits);
357 table = swf_index_tables[nb_bits-2];
358 k0 = 1 << (nb_bits-2);
359 signmask = 1 << (nb_bits-1);
361 while (get_bits_count(&gb) <= size - 22*avctx->channels) {
362 for (i = 0; i < avctx->channels; i++) {
363 *samples++ = c->status[i].predictor = get_sbits(&gb, 16);
364 c->status[i].step_index = get_bits(&gb, 6);
367 for (count = 0; get_bits_count(&gb) <= size - nb_bits*avctx->channels && count < 4095; count++) {
370 for (i = 0; i < avctx->channels; i++) {
371 // similar to IMA adpcm
372 int delta = get_bits(&gb, nb_bits);
373 int step = ff_adpcm_step_table[c->status[i].step_index];
374 long vpdiff = 0; // vpdiff = (delta+0.5)*step/4
385 if (delta & signmask)
386 c->status[i].predictor -= vpdiff;
388 c->status[i].predictor += vpdiff;
390 c->status[i].step_index += table[delta & (~signmask)];
392 c->status[i].step_index = av_clip(c->status[i].step_index, 0, 88);
393 c->status[i].predictor = av_clip_int16(c->status[i].predictor);
395 *samples++ = c->status[i].predictor;
402 * Get the number of samples that will be decoded from the packet.
403 * In one case, this is actually the maximum number of samples possible to
404 * decode with the given buf_size.
406 * @param[out] coded_samples set to the number of samples as coded in the
407 * packet, or 0 if the codec does not encode the
408 * number of samples in each frame.
410 static int get_nb_samples(AVCodecContext *avctx, GetByteContext *gb,
411 int buf_size, int *coded_samples)
413 ADPCMDecodeContext *s = avctx->priv_data;
415 int ch = avctx->channels;
416 int has_coded_samples = 0;
424 switch (avctx->codec->id) {
425 /* constant, only check buf_size */
426 case AV_CODEC_ID_ADPCM_EA_XAS:
427 if (buf_size < 76 * ch)
431 case AV_CODEC_ID_ADPCM_IMA_QT:
432 if (buf_size < 34 * ch)
436 /* simple 4-bit adpcm */
437 case AV_CODEC_ID_ADPCM_CT:
438 case AV_CODEC_ID_ADPCM_IMA_APC:
439 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
440 case AV_CODEC_ID_ADPCM_IMA_WS:
441 case AV_CODEC_ID_ADPCM_YAMAHA:
442 nb_samples = buf_size * 2 / ch;
448 /* simple 4-bit adpcm, with header */
450 switch (avctx->codec->id) {
451 case AV_CODEC_ID_ADPCM_4XM:
452 case AV_CODEC_ID_ADPCM_IMA_ISS: header_size = 4 * ch; break;
453 case AV_CODEC_ID_ADPCM_IMA_AMV: header_size = 8; break;
454 case AV_CODEC_ID_ADPCM_IMA_SMJPEG: header_size = 4; break;
457 return (buf_size - header_size) * 2 / ch;
459 /* more complex formats */
460 switch (avctx->codec->id) {
461 case AV_CODEC_ID_ADPCM_EA:
462 has_coded_samples = 1;
463 *coded_samples = bytestream2_get_le32(gb);
464 *coded_samples -= *coded_samples % 28;
465 nb_samples = (buf_size - 12) / 30 * 28;
467 case AV_CODEC_ID_ADPCM_IMA_EA_EACS:
468 has_coded_samples = 1;
469 *coded_samples = bytestream2_get_le32(gb);
470 nb_samples = (buf_size - (4 + 8 * ch)) * 2 / ch;
472 case AV_CODEC_ID_ADPCM_EA_MAXIS_XA:
473 nb_samples = (buf_size - ch) / ch * 2;
475 case AV_CODEC_ID_ADPCM_EA_R1:
476 case AV_CODEC_ID_ADPCM_EA_R2:
477 case AV_CODEC_ID_ADPCM_EA_R3:
478 /* maximum number of samples */
479 /* has internal offsets and a per-frame switch to signal raw 16-bit */
480 has_coded_samples = 1;
481 switch (avctx->codec->id) {
482 case AV_CODEC_ID_ADPCM_EA_R1:
483 header_size = 4 + 9 * ch;
484 *coded_samples = bytestream2_get_le32(gb);
486 case AV_CODEC_ID_ADPCM_EA_R2:
487 header_size = 4 + 5 * ch;
488 *coded_samples = bytestream2_get_le32(gb);
490 case AV_CODEC_ID_ADPCM_EA_R3:
491 header_size = 4 + 5 * ch;
492 *coded_samples = bytestream2_get_be32(gb);
495 *coded_samples -= *coded_samples % 28;
496 nb_samples = (buf_size - header_size) * 2 / ch;
497 nb_samples -= nb_samples % 28;
499 case AV_CODEC_ID_ADPCM_IMA_DK3:
500 if (avctx->block_align > 0)
501 buf_size = FFMIN(buf_size, avctx->block_align);
502 nb_samples = ((buf_size - 16) * 2 / 3 * 4) / ch;
504 case AV_CODEC_ID_ADPCM_IMA_DK4:
505 if (avctx->block_align > 0)
506 buf_size = FFMIN(buf_size, avctx->block_align);
507 nb_samples = 1 + (buf_size - 4 * ch) * 2 / ch;
509 case AV_CODEC_ID_ADPCM_IMA_WAV:
510 if (avctx->block_align > 0)
511 buf_size = FFMIN(buf_size, avctx->block_align);
512 nb_samples = 1 + (buf_size - 4 * ch) / (4 * ch) * 8;
514 case AV_CODEC_ID_ADPCM_MS:
515 if (avctx->block_align > 0)
516 buf_size = FFMIN(buf_size, avctx->block_align);
517 nb_samples = 2 + (buf_size - 7 * ch) * 2 / ch;
519 case AV_CODEC_ID_ADPCM_SBPRO_2:
520 case AV_CODEC_ID_ADPCM_SBPRO_3:
521 case AV_CODEC_ID_ADPCM_SBPRO_4:
523 int samples_per_byte;
524 switch (avctx->codec->id) {
525 case AV_CODEC_ID_ADPCM_SBPRO_2: samples_per_byte = 4; break;
526 case AV_CODEC_ID_ADPCM_SBPRO_3: samples_per_byte = 3; break;
527 case AV_CODEC_ID_ADPCM_SBPRO_4: samples_per_byte = 2; break;
529 if (!s->status[0].step_index) {
533 nb_samples += buf_size * samples_per_byte / ch;
536 case AV_CODEC_ID_ADPCM_SWF:
538 int buf_bits = buf_size * 8 - 2;
539 int nbits = (bytestream2_get_byte(gb) >> 6) + 2;
540 int block_hdr_size = 22 * ch;
541 int block_size = block_hdr_size + nbits * ch * 4095;
542 int nblocks = buf_bits / block_size;
543 int bits_left = buf_bits - nblocks * block_size;
544 nb_samples = nblocks * 4096;
545 if (bits_left >= block_hdr_size)
546 nb_samples += 1 + (bits_left - block_hdr_size) / (nbits * ch);
549 case AV_CODEC_ID_ADPCM_THP:
550 has_coded_samples = 1;
551 bytestream2_skip(gb, 4); // channel size
552 *coded_samples = bytestream2_get_be32(gb);
553 *coded_samples -= *coded_samples % 14;
554 nb_samples = (buf_size - 80) / (8 * ch) * 14;
556 case AV_CODEC_ID_ADPCM_XA:
557 nb_samples = (buf_size / 128) * 224 / ch;
561 /* validate coded sample count */
562 if (has_coded_samples && (*coded_samples <= 0 || *coded_samples > nb_samples))
563 return AVERROR_INVALIDDATA;
568 static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
569 int *got_frame_ptr, AVPacket *avpkt)
571 const uint8_t *buf = avpkt->data;
572 int buf_size = avpkt->size;
573 ADPCMDecodeContext *c = avctx->priv_data;
574 ADPCMChannelStatus *cs;
575 int n, m, channel, i;
579 int nb_samples, coded_samples, ret;
582 bytestream2_init(&gb, buf, buf_size);
583 nb_samples = get_nb_samples(avctx, &gb, buf_size, &coded_samples);
584 if (nb_samples <= 0) {
585 av_log(avctx, AV_LOG_ERROR, "invalid number of samples in packet\n");
586 return AVERROR_INVALIDDATA;
589 /* get output buffer */
590 c->frame.nb_samples = nb_samples;
591 if ((ret = avctx->get_buffer(avctx, &c->frame)) < 0) {
592 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
595 samples = (short *)c->frame.data[0];
597 /* use coded_samples when applicable */
598 /* it is always <= nb_samples, so the output buffer will be large enough */
600 if (coded_samples != nb_samples)
601 av_log(avctx, AV_LOG_WARNING, "mismatch in coded sample count\n");
602 c->frame.nb_samples = nb_samples = coded_samples;
605 st = avctx->channels == 2 ? 1 : 0;
607 switch(avctx->codec->id) {
608 case AV_CODEC_ID_ADPCM_IMA_QT:
609 /* In QuickTime, IMA is encoded by chunks of 34 bytes (=64 samples).
610 Channel data is interleaved per-chunk. */
611 for (channel = 0; channel < avctx->channels; channel++) {
614 cs = &(c->status[channel]);
615 /* (pppppp) (piiiiiii) */
617 /* Bits 15-7 are the _top_ 9 bits of the 16-bit initial predictor value */
618 predictor = sign_extend(bytestream2_get_be16u(&gb), 16);
619 step_index = predictor & 0x7F;
622 if (cs->step_index == step_index) {
623 int diff = predictor - cs->predictor;
630 cs->step_index = step_index;
631 cs->predictor = predictor;
634 if (cs->step_index > 88u){
635 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
636 channel, cs->step_index);
637 return AVERROR_INVALIDDATA;
640 samples = (short *)c->frame.data[0] + channel;
642 for (m = 0; m < 32; m++) {
643 int byte = bytestream2_get_byteu(&gb);
644 *samples = adpcm_ima_qt_expand_nibble(cs, byte & 0x0F, 3);
645 samples += avctx->channels;
646 *samples = adpcm_ima_qt_expand_nibble(cs, byte >> 4 , 3);
647 samples += avctx->channels;
651 case AV_CODEC_ID_ADPCM_IMA_WAV:
652 for(i=0; i<avctx->channels; i++){
653 cs = &(c->status[i]);
654 cs->predictor = *samples++ = sign_extend(bytestream2_get_le16u(&gb), 16);
656 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
657 if (cs->step_index > 88u){
658 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
660 return AVERROR_INVALIDDATA;
664 for (n = (nb_samples - 1) / 8; n > 0; n--) {
665 for (i = 0; i < avctx->channels; i++) {
667 for (m = 0; m < 4; m++) {
668 int v = bytestream2_get_byteu(&gb);
669 *samples = adpcm_ima_expand_nibble(cs, v & 0x0F, 3);
670 samples += avctx->channels;
671 *samples = adpcm_ima_expand_nibble(cs, v >> 4 , 3);
672 samples += avctx->channels;
674 samples -= 8 * avctx->channels - 1;
676 samples += 7 * avctx->channels;
679 case AV_CODEC_ID_ADPCM_4XM:
680 for (i = 0; i < avctx->channels; i++)
681 c->status[i].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
683 for (i = 0; i < avctx->channels; i++) {
684 c->status[i].step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
685 if (c->status[i].step_index > 88u) {
686 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
687 i, c->status[i].step_index);
688 return AVERROR_INVALIDDATA;
692 for (i = 0; i < avctx->channels; i++) {
693 samples = (short *)c->frame.data[0] + i;
695 for (n = nb_samples >> 1; n > 0; n--) {
696 int v = bytestream2_get_byteu(&gb);
697 *samples = adpcm_ima_expand_nibble(cs, v & 0x0F, 4);
698 samples += avctx->channels;
699 *samples = adpcm_ima_expand_nibble(cs, v >> 4 , 4);
700 samples += avctx->channels;
704 case AV_CODEC_ID_ADPCM_MS:
708 block_predictor = bytestream2_get_byteu(&gb);
709 if (block_predictor > 6) {
710 av_log(avctx, AV_LOG_ERROR, "ERROR: block_predictor[0] = %d\n",
712 return AVERROR_INVALIDDATA;
714 c->status[0].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
715 c->status[0].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
717 block_predictor = bytestream2_get_byteu(&gb);
718 if (block_predictor > 6) {
719 av_log(avctx, AV_LOG_ERROR, "ERROR: block_predictor[1] = %d\n",
721 return AVERROR_INVALIDDATA;
723 c->status[1].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
724 c->status[1].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
726 c->status[0].idelta = sign_extend(bytestream2_get_le16u(&gb), 16);
728 c->status[1].idelta = sign_extend(bytestream2_get_le16u(&gb), 16);
731 c->status[0].sample1 = sign_extend(bytestream2_get_le16u(&gb), 16);
732 if (st) c->status[1].sample1 = sign_extend(bytestream2_get_le16u(&gb), 16);
733 c->status[0].sample2 = sign_extend(bytestream2_get_le16u(&gb), 16);
734 if (st) c->status[1].sample2 = sign_extend(bytestream2_get_le16u(&gb), 16);
736 *samples++ = c->status[0].sample2;
737 if (st) *samples++ = c->status[1].sample2;
738 *samples++ = c->status[0].sample1;
739 if (st) *samples++ = c->status[1].sample1;
740 for(n = (nb_samples - 2) >> (1 - st); n > 0; n--) {
741 int byte = bytestream2_get_byteu(&gb);
742 *samples++ = adpcm_ms_expand_nibble(&c->status[0 ], byte >> 4 );
743 *samples++ = adpcm_ms_expand_nibble(&c->status[st], byte & 0x0F);
747 case AV_CODEC_ID_ADPCM_IMA_DK4:
748 for (channel = 0; channel < avctx->channels; channel++) {
749 cs = &c->status[channel];
750 cs->predictor = *samples++ = sign_extend(bytestream2_get_le16u(&gb), 16);
751 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
752 if (cs->step_index > 88u){
753 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
754 channel, cs->step_index);
755 return AVERROR_INVALIDDATA;
758 for (n = nb_samples >> (1 - st); n > 0; n--) {
759 int v = bytestream2_get_byteu(&gb);
760 *samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v >> 4 , 3);
761 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
764 case AV_CODEC_ID_ADPCM_IMA_DK3:
768 int decode_top_nibble_next = 0;
770 const int16_t *samples_end = samples + avctx->channels * nb_samples;
772 bytestream2_skipu(&gb, 10);
773 c->status[0].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
774 c->status[1].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
775 c->status[0].step_index = bytestream2_get_byteu(&gb);
776 c->status[1].step_index = bytestream2_get_byteu(&gb);
777 if (c->status[0].step_index > 88u || c->status[1].step_index > 88u){
778 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i/%i\n",
779 c->status[0].step_index, c->status[1].step_index);
780 return AVERROR_INVALIDDATA;
782 /* sign extend the predictors */
783 diff_channel = c->status[1].predictor;
785 /* DK3 ADPCM support macro */
786 #define DK3_GET_NEXT_NIBBLE() \
787 if (decode_top_nibble_next) { \
788 nibble = last_byte >> 4; \
789 decode_top_nibble_next = 0; \
791 last_byte = bytestream2_get_byteu(&gb); \
792 nibble = last_byte & 0x0F; \
793 decode_top_nibble_next = 1; \
796 while (samples < samples_end) {
798 /* for this algorithm, c->status[0] is the sum channel and
799 * c->status[1] is the diff channel */
801 /* process the first predictor of the sum channel */
802 DK3_GET_NEXT_NIBBLE();
803 adpcm_ima_expand_nibble(&c->status[0], nibble, 3);
805 /* process the diff channel predictor */
806 DK3_GET_NEXT_NIBBLE();
807 adpcm_ima_expand_nibble(&c->status[1], nibble, 3);
809 /* process the first pair of stereo PCM samples */
810 diff_channel = (diff_channel + c->status[1].predictor) / 2;
811 *samples++ = c->status[0].predictor + c->status[1].predictor;
812 *samples++ = c->status[0].predictor - c->status[1].predictor;
814 /* process the second predictor of the sum channel */
815 DK3_GET_NEXT_NIBBLE();
816 adpcm_ima_expand_nibble(&c->status[0], nibble, 3);
818 /* process the second pair of stereo PCM samples */
819 diff_channel = (diff_channel + c->status[1].predictor) / 2;
820 *samples++ = c->status[0].predictor + c->status[1].predictor;
821 *samples++ = c->status[0].predictor - c->status[1].predictor;
825 case AV_CODEC_ID_ADPCM_IMA_ISS:
826 for (channel = 0; channel < avctx->channels; channel++) {
827 cs = &c->status[channel];
828 cs->predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
829 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
830 if (cs->step_index > 88u){
831 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
832 channel, cs->step_index);
833 return AVERROR_INVALIDDATA;
837 for (n = nb_samples >> (1 - st); n > 0; n--) {
839 int v = bytestream2_get_byteu(&gb);
840 /* nibbles are swapped for mono */
848 *samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v1, 3);
849 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v2, 3);
852 case AV_CODEC_ID_ADPCM_IMA_APC:
853 while (bytestream2_get_bytes_left(&gb) > 0) {
854 int v = bytestream2_get_byteu(&gb);
855 *samples++ = adpcm_ima_expand_nibble(&c->status[0], v >> 4 , 3);
856 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
859 case AV_CODEC_ID_ADPCM_IMA_WS:
860 if (c->vqa_version == 3) {
861 for (channel = 0; channel < avctx->channels; channel++) {
862 int16_t *smp = samples + channel;
864 for (n = nb_samples / 2; n > 0; n--) {
865 int v = bytestream2_get_byteu(&gb);
866 *smp = adpcm_ima_expand_nibble(&c->status[channel], v >> 4 , 3);
867 smp += avctx->channels;
868 *smp = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
869 smp += avctx->channels;
873 for (n = nb_samples / 2; n > 0; n--) {
874 for (channel = 0; channel < avctx->channels; channel++) {
875 int v = bytestream2_get_byteu(&gb);
876 *samples++ = adpcm_ima_expand_nibble(&c->status[channel], v >> 4 , 3);
877 samples[st] = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
879 samples += avctx->channels;
882 bytestream2_seek(&gb, 0, SEEK_END);
884 case AV_CODEC_ID_ADPCM_XA:
885 while (bytestream2_get_bytes_left(&gb) >= 128) {
886 if ((ret = xa_decode(avctx, samples, buf + bytestream2_tell(&gb), &c->status[0],
887 &c->status[1], avctx->channels)) < 0)
889 bytestream2_skipu(&gb, 128);
893 case AV_CODEC_ID_ADPCM_IMA_EA_EACS:
894 for (i=0; i<=st; i++) {
895 c->status[i].step_index = bytestream2_get_le32u(&gb);
896 if (c->status[i].step_index > 88u) {
897 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
898 i, c->status[i].step_index);
899 return AVERROR_INVALIDDATA;
902 for (i=0; i<=st; i++)
903 c->status[i].predictor = bytestream2_get_le32u(&gb);
905 for (n = nb_samples >> (1 - st); n > 0; n--) {
906 int byte = bytestream2_get_byteu(&gb);
907 *samples++ = adpcm_ima_expand_nibble(&c->status[0], byte >> 4, 3);
908 *samples++ = adpcm_ima_expand_nibble(&c->status[st], byte & 0x0F, 3);
911 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
912 for (n = nb_samples >> (1 - st); n > 0; n--) {
913 int byte = bytestream2_get_byteu(&gb);
914 *samples++ = adpcm_ima_expand_nibble(&c->status[0], byte >> 4, 6);
915 *samples++ = adpcm_ima_expand_nibble(&c->status[st], byte & 0x0F, 6);
918 case AV_CODEC_ID_ADPCM_EA:
920 int previous_left_sample, previous_right_sample;
921 int current_left_sample, current_right_sample;
922 int next_left_sample, next_right_sample;
923 int coeff1l, coeff2l, coeff1r, coeff2r;
924 int shift_left, shift_right;
926 /* Each EA ADPCM frame has a 12-byte header followed by 30-byte pieces,
927 each coding 28 stereo samples. */
929 if(avctx->channels != 2)
930 return AVERROR_INVALIDDATA;
932 current_left_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
933 previous_left_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
934 current_right_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
935 previous_right_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
937 for (count1 = 0; count1 < nb_samples / 28; count1++) {
938 int byte = bytestream2_get_byteu(&gb);
939 coeff1l = ea_adpcm_table[ byte >> 4 ];
940 coeff2l = ea_adpcm_table[(byte >> 4 ) + 4];
941 coeff1r = ea_adpcm_table[ byte & 0x0F];
942 coeff2r = ea_adpcm_table[(byte & 0x0F) + 4];
944 byte = bytestream2_get_byteu(&gb);
945 shift_left = 20 - (byte >> 4);
946 shift_right = 20 - (byte & 0x0F);
948 for (count2 = 0; count2 < 28; count2++) {
949 byte = bytestream2_get_byteu(&gb);
950 next_left_sample = sign_extend(byte >> 4, 4) << shift_left;
951 next_right_sample = sign_extend(byte, 4) << shift_right;
953 next_left_sample = (next_left_sample +
954 (current_left_sample * coeff1l) +
955 (previous_left_sample * coeff2l) + 0x80) >> 8;
956 next_right_sample = (next_right_sample +
957 (current_right_sample * coeff1r) +
958 (previous_right_sample * coeff2r) + 0x80) >> 8;
960 previous_left_sample = current_left_sample;
961 current_left_sample = av_clip_int16(next_left_sample);
962 previous_right_sample = current_right_sample;
963 current_right_sample = av_clip_int16(next_right_sample);
964 *samples++ = current_left_sample;
965 *samples++ = current_right_sample;
969 bytestream2_skip(&gb, 2); // Skip terminating 0x0000
973 case AV_CODEC_ID_ADPCM_EA_MAXIS_XA:
975 int coeff[2][2], shift[2];
977 for(channel = 0; channel < avctx->channels; channel++) {
978 int byte = bytestream2_get_byteu(&gb);
980 coeff[channel][i] = ea_adpcm_table[(byte >> 4) + 4*i];
981 shift[channel] = 20 - (byte & 0x0F);
983 for (count1 = 0; count1 < nb_samples / 2; count1++) {
986 byte[0] = bytestream2_get_byteu(&gb);
987 if (st) byte[1] = bytestream2_get_byteu(&gb);
988 for(i = 4; i >= 0; i-=4) { /* Pairwise samples LL RR (st) or LL LL (mono) */
989 for(channel = 0; channel < avctx->channels; channel++) {
990 int sample = sign_extend(byte[channel] >> i, 4) << shift[channel];
992 c->status[channel].sample1 * coeff[channel][0] +
993 c->status[channel].sample2 * coeff[channel][1] + 0x80) >> 8;
994 c->status[channel].sample2 = c->status[channel].sample1;
995 c->status[channel].sample1 = av_clip_int16(sample);
996 *samples++ = c->status[channel].sample1;
1000 bytestream2_seek(&gb, 0, SEEK_END);
1003 case AV_CODEC_ID_ADPCM_EA_R1:
1004 case AV_CODEC_ID_ADPCM_EA_R2:
1005 case AV_CODEC_ID_ADPCM_EA_R3: {
1006 /* channel numbering
1008 4chan: 0=fl, 1=rl, 2=fr, 3=rr
1009 6chan: 0=fl, 1=c, 2=fr, 3=rl, 4=rr, 5=sub */
1010 const int big_endian = avctx->codec->id == AV_CODEC_ID_ADPCM_EA_R3;
1011 int previous_sample, current_sample, next_sample;
1014 unsigned int channel;
1019 for (channel=0; channel<avctx->channels; channel++)
1020 offsets[channel] = (big_endian ? bytestream2_get_be32(&gb) :
1021 bytestream2_get_le32(&gb)) +
1022 (avctx->channels + 1) * 4;
1024 for (channel=0; channel<avctx->channels; channel++) {
1025 bytestream2_seek(&gb, offsets[channel], SEEK_SET);
1026 samplesC = samples + channel;
1028 if (avctx->codec->id == AV_CODEC_ID_ADPCM_EA_R1) {
1029 current_sample = sign_extend(bytestream2_get_le16(&gb), 16);
1030 previous_sample = sign_extend(bytestream2_get_le16(&gb), 16);
1032 current_sample = c->status[channel].predictor;
1033 previous_sample = c->status[channel].prev_sample;
1036 for (count1 = 0; count1 < nb_samples / 28; count1++) {
1037 int byte = bytestream2_get_byte(&gb);
1038 if (byte == 0xEE) { /* only seen in R2 and R3 */
1039 current_sample = sign_extend(bytestream2_get_be16(&gb), 16);
1040 previous_sample = sign_extend(bytestream2_get_be16(&gb), 16);
1042 for (count2=0; count2<28; count2++) {
1043 *samplesC = sign_extend(bytestream2_get_be16(&gb), 16);
1044 samplesC += avctx->channels;
1047 coeff1 = ea_adpcm_table[ byte >> 4 ];
1048 coeff2 = ea_adpcm_table[(byte >> 4) + 4];
1049 shift = 20 - (byte & 0x0F);
1051 for (count2=0; count2<28; count2++) {
1053 next_sample = sign_extend(byte, 4) << shift;
1055 byte = bytestream2_get_byte(&gb);
1056 next_sample = sign_extend(byte >> 4, 4) << shift;
1059 next_sample += (current_sample * coeff1) +
1060 (previous_sample * coeff2);
1061 next_sample = av_clip_int16(next_sample >> 8);
1063 previous_sample = current_sample;
1064 current_sample = next_sample;
1065 *samplesC = current_sample;
1066 samplesC += avctx->channels;
1072 } else if (count != count1) {
1073 av_log(avctx, AV_LOG_WARNING, "per-channel sample count mismatch\n");
1074 count = FFMAX(count, count1);
1077 if (avctx->codec->id != AV_CODEC_ID_ADPCM_EA_R1) {
1078 c->status[channel].predictor = current_sample;
1079 c->status[channel].prev_sample = previous_sample;
1083 c->frame.nb_samples = count * 28;
1084 bytestream2_seek(&gb, 0, SEEK_END);
1087 case AV_CODEC_ID_ADPCM_EA_XAS:
1088 for (channel=0; channel<avctx->channels; channel++) {
1089 int coeff[2][4], shift[4];
1090 short *s2, *s = &samples[channel];
1091 for (n=0; n<4; n++, s+=32*avctx->channels) {
1092 int val = sign_extend(bytestream2_get_le16u(&gb), 16);
1094 coeff[i][n] = ea_adpcm_table[(val&0x0F)+4*i];
1097 val = sign_extend(bytestream2_get_le16u(&gb), 16);
1098 shift[n] = 20 - (val & 0x0F);
1099 s[avctx->channels] = val & ~0x0F;
1102 for (m=2; m<32; m+=2) {
1103 s = &samples[m*avctx->channels + channel];
1104 for (n=0; n<4; n++, s+=32*avctx->channels) {
1105 int byte = bytestream2_get_byteu(&gb);
1106 for (s2=s, i=0; i<8; i+=4, s2+=avctx->channels) {
1107 int level = sign_extend(byte >> (4 - i), 4) << shift[n];
1108 int pred = s2[-1*avctx->channels] * coeff[0][n]
1109 + s2[-2*avctx->channels] * coeff[1][n];
1110 s2[0] = av_clip_int16((level + pred + 0x80) >> 8);
1116 case AV_CODEC_ID_ADPCM_IMA_AMV:
1117 case AV_CODEC_ID_ADPCM_IMA_SMJPEG:
1118 if (avctx->codec->id == AV_CODEC_ID_ADPCM_IMA_AMV) {
1119 c->status[0].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1120 c->status[0].step_index = bytestream2_get_le16u(&gb);
1121 bytestream2_skipu(&gb, 4);
1123 c->status[0].predictor = sign_extend(bytestream2_get_be16u(&gb), 16);
1124 c->status[0].step_index = bytestream2_get_byteu(&gb);
1125 bytestream2_skipu(&gb, 1);
1127 if (c->status[0].step_index > 88u) {
1128 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i\n",
1129 c->status[0].step_index);
1130 return AVERROR_INVALIDDATA;
1133 for (n = nb_samples >> (1 - st); n > 0; n--) {
1134 int hi, lo, v = bytestream2_get_byteu(&gb);
1136 if (avctx->codec->id == AV_CODEC_ID_ADPCM_IMA_AMV) {
1144 *samples++ = adpcm_ima_expand_nibble(&c->status[0], lo, 3);
1145 *samples++ = adpcm_ima_expand_nibble(&c->status[0], hi, 3);
1148 case AV_CODEC_ID_ADPCM_CT:
1149 for (n = nb_samples >> (1 - st); n > 0; n--) {
1150 int v = bytestream2_get_byteu(&gb);
1151 *samples++ = adpcm_ct_expand_nibble(&c->status[0 ], v >> 4 );
1152 *samples++ = adpcm_ct_expand_nibble(&c->status[st], v & 0x0F);
1155 case AV_CODEC_ID_ADPCM_SBPRO_4:
1156 case AV_CODEC_ID_ADPCM_SBPRO_3:
1157 case AV_CODEC_ID_ADPCM_SBPRO_2:
1158 if (!c->status[0].step_index) {
1159 /* the first byte is a raw sample */
1160 *samples++ = 128 * (bytestream2_get_byteu(&gb) - 0x80);
1162 *samples++ = 128 * (bytestream2_get_byteu(&gb) - 0x80);
1163 c->status[0].step_index = 1;
1166 if (avctx->codec->id == AV_CODEC_ID_ADPCM_SBPRO_4) {
1167 for (n = nb_samples >> (1 - st); n > 0; n--) {
1168 int byte = bytestream2_get_byteu(&gb);
1169 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1171 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1174 } else if (avctx->codec->id == AV_CODEC_ID_ADPCM_SBPRO_3) {
1175 for (n = nb_samples / 3; n > 0; n--) {
1176 int byte = bytestream2_get_byteu(&gb);
1177 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1179 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1180 (byte >> 2) & 0x07, 3, 0);
1181 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1185 for (n = nb_samples >> (2 - st); n > 0; n--) {
1186 int byte = bytestream2_get_byteu(&gb);
1187 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1189 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1190 (byte >> 4) & 0x03, 2, 2);
1191 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
1192 (byte >> 2) & 0x03, 2, 2);
1193 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
1198 case AV_CODEC_ID_ADPCM_SWF:
1199 adpcm_swf_decode(avctx, buf, buf_size, samples);
1200 bytestream2_seek(&gb, 0, SEEK_END);
1202 case AV_CODEC_ID_ADPCM_YAMAHA:
1203 for (n = nb_samples >> (1 - st); n > 0; n--) {
1204 int v = bytestream2_get_byteu(&gb);
1205 *samples++ = adpcm_yamaha_expand_nibble(&c->status[0 ], v & 0x0F);
1206 *samples++ = adpcm_yamaha_expand_nibble(&c->status[st], v >> 4 );
1209 case AV_CODEC_ID_ADPCM_THP:
1215 for (i = 0; i < 2; i++)
1216 for (n = 0; n < 16; n++)
1217 table[i][n] = sign_extend(bytestream2_get_be16u(&gb), 16);
1219 /* Initialize the previous sample. */
1220 for (i = 0; i < 2; i++)
1221 for (n = 0; n < 2; n++)
1222 prev[i][n] = sign_extend(bytestream2_get_be16u(&gb), 16);
1224 for (ch = 0; ch <= st; ch++) {
1225 samples = (short *)c->frame.data[0] + ch;
1227 /* Read in every sample for this channel. */
1228 for (i = 0; i < nb_samples / 14; i++) {
1229 int byte = bytestream2_get_byteu(&gb);
1230 int index = (byte >> 4) & 7;
1231 unsigned int exp = byte & 0x0F;
1232 int factor1 = table[ch][index * 2];
1233 int factor2 = table[ch][index * 2 + 1];
1235 /* Decode 14 samples. */
1236 for (n = 0; n < 14; n++) {
1240 sampledat = sign_extend(byte, 4);
1242 byte = bytestream2_get_byteu(&gb);
1243 sampledat = sign_extend(byte >> 4, 4);
1246 sampledat = ((prev[ch][0]*factor1
1247 + prev[ch][1]*factor2) >> 11) + (sampledat << exp);
1248 *samples = av_clip_int16(sampledat);
1249 prev[ch][1] = prev[ch][0];
1250 prev[ch][0] = *samples++;
1252 /* In case of stereo, skip one sample, this sample
1253 is for the other channel. */
1266 *(AVFrame *)data = c->frame;
1268 return bytestream2_tell(&gb);
1272 #define ADPCM_DECODER(id_, name_, long_name_) \
1273 AVCodec ff_ ## name_ ## _decoder = { \
1275 .type = AVMEDIA_TYPE_AUDIO, \
1277 .priv_data_size = sizeof(ADPCMDecodeContext), \
1278 .init = adpcm_decode_init, \
1279 .decode = adpcm_decode_frame, \
1280 .capabilities = CODEC_CAP_DR1, \
1281 .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
1284 /* Note: Do not forget to add new entries to the Makefile as well. */
1285 ADPCM_DECODER(AV_CODEC_ID_ADPCM_4XM, adpcm_4xm, "ADPCM 4X Movie");
1286 ADPCM_DECODER(AV_CODEC_ID_ADPCM_CT, adpcm_ct, "ADPCM Creative Technology");
1287 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA, adpcm_ea, "ADPCM Electronic Arts");
1288 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_MAXIS_XA, adpcm_ea_maxis_xa, "ADPCM Electronic Arts Maxis CDROM XA");
1289 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R1, adpcm_ea_r1, "ADPCM Electronic Arts R1");
1290 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R2, adpcm_ea_r2, "ADPCM Electronic Arts R2");
1291 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R3, adpcm_ea_r3, "ADPCM Electronic Arts R3");
1292 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_XAS, adpcm_ea_xas, "ADPCM Electronic Arts XAS");
1293 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_AMV, adpcm_ima_amv, "ADPCM IMA AMV");
1294 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_APC, adpcm_ima_apc, "ADPCM IMA CRYO APC");
1295 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3, "ADPCM IMA Duck DK3");
1296 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4, "ADPCM IMA Duck DK4");
1297 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_EA_EACS, adpcm_ima_ea_eacs, "ADPCM IMA Electronic Arts EACS");
1298 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_EA_SEAD, adpcm_ima_ea_sead, "ADPCM IMA Electronic Arts SEAD");
1299 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_ISS, adpcm_ima_iss, "ADPCM IMA Funcom ISS");
1300 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt, "ADPCM IMA QuickTime");
1301 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_SMJPEG, adpcm_ima_smjpeg, "ADPCM IMA Loki SDL MJPEG");
1302 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav, "ADPCM IMA WAV");
1303 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws, "ADPCM IMA Westwood");
1304 ADPCM_DECODER(AV_CODEC_ID_ADPCM_MS, adpcm_ms, "ADPCM Microsoft");
1305 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2, "ADPCM Sound Blaster Pro 2-bit");
1306 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3, "ADPCM Sound Blaster Pro 2.6-bit");
1307 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4, "ADPCM Sound Blaster Pro 4-bit");
1308 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SWF, adpcm_swf, "ADPCM Shockwave Flash");
1309 ADPCM_DECODER(AV_CODEC_ID_ADPCM_THP, adpcm_thp, "ADPCM Nintendo Gamecube THP");
1310 ADPCM_DECODER(AV_CODEC_ID_ADPCM_XA, adpcm_xa, "ADPCM CDROM XA");
1311 ADPCM_DECODER(AV_CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha, "ADPCM Yamaha");