2 * Copyright (c) 2001-2003 The ffmpeg Project
4 * This file is part of Libav.
6 * Libav 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 * Libav 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 Libav; 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);
138 switch(avctx->codec->id) {
139 case AV_CODEC_ID_ADPCM_IMA_QT:
140 case AV_CODEC_ID_ADPCM_IMA_WAV:
141 case AV_CODEC_ID_ADPCM_4XM:
142 avctx->sample_fmt = AV_SAMPLE_FMT_S16P;
145 avctx->sample_fmt = AV_SAMPLE_FMT_S16;
148 avcodec_get_frame_defaults(&c->frame);
149 avctx->coded_frame = &c->frame;
154 static inline short adpcm_ima_expand_nibble(ADPCMChannelStatus *c, char nibble, int shift)
158 int sign, delta, diff, step;
160 step = ff_adpcm_step_table[c->step_index];
161 step_index = c->step_index + ff_adpcm_index_table[(unsigned)nibble];
162 step_index = av_clip(step_index, 0, 88);
166 /* perform direct multiplication instead of series of jumps proposed by
167 * the reference ADPCM implementation since modern CPUs can do the mults
169 diff = ((2 * delta + 1) * step) >> shift;
170 predictor = c->predictor;
171 if (sign) predictor -= diff;
172 else predictor += diff;
174 c->predictor = av_clip_int16(predictor);
175 c->step_index = step_index;
177 return (short)c->predictor;
180 static inline int adpcm_ima_qt_expand_nibble(ADPCMChannelStatus *c, int nibble, int shift)
186 step = ff_adpcm_step_table[c->step_index];
187 step_index = c->step_index + ff_adpcm_index_table[nibble];
188 step_index = av_clip(step_index, 0, 88);
191 if (nibble & 4) diff += step;
192 if (nibble & 2) diff += step >> 1;
193 if (nibble & 1) diff += step >> 2;
196 predictor = c->predictor - diff;
198 predictor = c->predictor + diff;
200 c->predictor = av_clip_int16(predictor);
201 c->step_index = step_index;
206 static inline short adpcm_ms_expand_nibble(ADPCMChannelStatus *c, int nibble)
210 predictor = (((c->sample1) * (c->coeff1)) + ((c->sample2) * (c->coeff2))) / 64;
211 predictor += ((nibble & 0x08)?(nibble - 0x10):(nibble)) * c->idelta;
213 c->sample2 = c->sample1;
214 c->sample1 = av_clip_int16(predictor);
215 c->idelta = (ff_adpcm_AdaptationTable[(int)nibble] * c->idelta) >> 8;
216 if (c->idelta < 16) c->idelta = 16;
221 static inline short adpcm_ct_expand_nibble(ADPCMChannelStatus *c, char nibble)
223 int sign, delta, diff;
228 /* perform direct multiplication instead of series of jumps proposed by
229 * the reference ADPCM implementation since modern CPUs can do the mults
231 diff = ((2 * delta + 1) * c->step) >> 3;
232 /* predictor update is not so trivial: predictor is multiplied on 254/256 before updating */
233 c->predictor = ((c->predictor * 254) >> 8) + (sign ? -diff : diff);
234 c->predictor = av_clip_int16(c->predictor);
235 /* calculate new step and clamp it to range 511..32767 */
236 new_step = (ff_adpcm_AdaptationTable[nibble & 7] * c->step) >> 8;
237 c->step = av_clip(new_step, 511, 32767);
239 return (short)c->predictor;
242 static inline short adpcm_sbpro_expand_nibble(ADPCMChannelStatus *c, char nibble, int size, int shift)
244 int sign, delta, diff;
246 sign = nibble & (1<<(size-1));
247 delta = nibble & ((1<<(size-1))-1);
248 diff = delta << (7 + c->step + shift);
251 c->predictor = av_clip(c->predictor + (sign ? -diff : diff), -16384,16256);
253 /* calculate new step */
254 if (delta >= (2*size - 3) && c->step < 3)
256 else if (delta == 0 && c->step > 0)
259 return (short) c->predictor;
262 static inline short adpcm_yamaha_expand_nibble(ADPCMChannelStatus *c, unsigned char nibble)
269 c->predictor += (c->step * ff_adpcm_yamaha_difflookup[nibble]) / 8;
270 c->predictor = av_clip_int16(c->predictor);
271 c->step = (c->step * ff_adpcm_yamaha_indexscale[nibble]) >> 8;
272 c->step = av_clip(c->step, 127, 24567);
276 static int xa_decode(AVCodecContext *avctx,
277 short *out, const unsigned char *in,
278 ADPCMChannelStatus *left, ADPCMChannelStatus *right, int inc)
281 int shift,filter,f0,f1;
287 shift = 12 - (in[4+i*2] & 15);
288 filter = in[4+i*2] >> 4;
290 av_log(avctx, AV_LOG_ERROR,
291 "Invalid XA-ADPCM filter %d (max. allowed is 4)\n",
293 return AVERROR_INVALIDDATA;
295 f0 = xa_adpcm_table[filter][0];
296 f1 = xa_adpcm_table[filter][1];
304 t = sign_extend(d, 4);
305 s = ( t<<shift ) + ((s_1*f0 + s_2*f1+32)>>6);
307 s_1 = av_clip_int16(s);
312 if (inc==2) { /* stereo */
315 s_1 = right->sample1;
316 s_2 = right->sample2;
317 out = out + 1 - 28*2;
320 shift = 12 - (in[5+i*2] & 15);
321 filter = in[5+i*2] >> 4;
323 av_log(avctx, AV_LOG_ERROR,
324 "Invalid XA-ADPCM filter %d (max. allowed is 4)\n",
326 return AVERROR_INVALIDDATA;
328 f0 = xa_adpcm_table[filter][0];
329 f1 = xa_adpcm_table[filter][1];
334 t = sign_extend(d >> 4, 4);
335 s = ( t<<shift ) + ((s_1*f0 + s_2*f1+32)>>6);
337 s_1 = av_clip_int16(s);
342 if (inc==2) { /* stereo */
343 right->sample1 = s_1;
344 right->sample2 = s_2;
355 static void adpcm_swf_decode(AVCodecContext *avctx, const uint8_t *buf, int buf_size, int16_t *samples)
357 ADPCMDecodeContext *c = avctx->priv_data;
360 int k0, signmask, nb_bits, count;
361 int size = buf_size*8;
364 init_get_bits(&gb, buf, size);
366 //read bits & initial values
367 nb_bits = get_bits(&gb, 2)+2;
368 table = swf_index_tables[nb_bits-2];
369 k0 = 1 << (nb_bits-2);
370 signmask = 1 << (nb_bits-1);
372 while (get_bits_count(&gb) <= size - 22*avctx->channels) {
373 for (i = 0; i < avctx->channels; i++) {
374 *samples++ = c->status[i].predictor = get_sbits(&gb, 16);
375 c->status[i].step_index = get_bits(&gb, 6);
378 for (count = 0; get_bits_count(&gb) <= size - nb_bits*avctx->channels && count < 4095; count++) {
381 for (i = 0; i < avctx->channels; i++) {
382 // similar to IMA adpcm
383 int delta = get_bits(&gb, nb_bits);
384 int step = ff_adpcm_step_table[c->status[i].step_index];
385 long vpdiff = 0; // vpdiff = (delta+0.5)*step/4
396 if (delta & signmask)
397 c->status[i].predictor -= vpdiff;
399 c->status[i].predictor += vpdiff;
401 c->status[i].step_index += table[delta & (~signmask)];
403 c->status[i].step_index = av_clip(c->status[i].step_index, 0, 88);
404 c->status[i].predictor = av_clip_int16(c->status[i].predictor);
406 *samples++ = c->status[i].predictor;
413 * Get the number of samples that will be decoded from the packet.
414 * In one case, this is actually the maximum number of samples possible to
415 * decode with the given buf_size.
417 * @param[out] coded_samples set to the number of samples as coded in the
418 * packet, or 0 if the codec does not encode the
419 * number of samples in each frame.
421 static int get_nb_samples(AVCodecContext *avctx, GetByteContext *gb,
422 int buf_size, int *coded_samples)
424 ADPCMDecodeContext *s = avctx->priv_data;
426 int ch = avctx->channels;
427 int has_coded_samples = 0;
432 switch (avctx->codec->id) {
433 /* constant, only check buf_size */
434 case AV_CODEC_ID_ADPCM_EA_XAS:
435 if (buf_size < 76 * ch)
439 case AV_CODEC_ID_ADPCM_IMA_QT:
440 if (buf_size < 34 * ch)
444 /* simple 4-bit adpcm */
445 case AV_CODEC_ID_ADPCM_CT:
446 case AV_CODEC_ID_ADPCM_IMA_APC:
447 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
448 case AV_CODEC_ID_ADPCM_IMA_WS:
449 case AV_CODEC_ID_ADPCM_YAMAHA:
450 nb_samples = buf_size * 2 / ch;
456 /* simple 4-bit adpcm, with header */
458 switch (avctx->codec->id) {
459 case AV_CODEC_ID_ADPCM_4XM:
460 case AV_CODEC_ID_ADPCM_IMA_ISS: header_size = 4 * ch; break;
461 case AV_CODEC_ID_ADPCM_IMA_AMV: header_size = 8; break;
462 case AV_CODEC_ID_ADPCM_IMA_SMJPEG: header_size = 4; break;
465 return (buf_size - header_size) * 2 / ch;
467 /* more complex formats */
468 switch (avctx->codec->id) {
469 case AV_CODEC_ID_ADPCM_EA:
470 has_coded_samples = 1;
471 *coded_samples = bytestream2_get_le32(gb);
472 *coded_samples -= *coded_samples % 28;
473 nb_samples = (buf_size - 12) / 30 * 28;
475 case AV_CODEC_ID_ADPCM_IMA_EA_EACS:
476 has_coded_samples = 1;
477 *coded_samples = bytestream2_get_le32(gb);
478 nb_samples = (buf_size - (4 + 8 * ch)) * 2 / ch;
480 case AV_CODEC_ID_ADPCM_EA_MAXIS_XA:
481 nb_samples = (buf_size - ch) / ch * 2;
483 case AV_CODEC_ID_ADPCM_EA_R1:
484 case AV_CODEC_ID_ADPCM_EA_R2:
485 case AV_CODEC_ID_ADPCM_EA_R3:
486 /* maximum number of samples */
487 /* has internal offsets and a per-frame switch to signal raw 16-bit */
488 has_coded_samples = 1;
489 switch (avctx->codec->id) {
490 case AV_CODEC_ID_ADPCM_EA_R1:
491 header_size = 4 + 9 * ch;
492 *coded_samples = bytestream2_get_le32(gb);
494 case AV_CODEC_ID_ADPCM_EA_R2:
495 header_size = 4 + 5 * ch;
496 *coded_samples = bytestream2_get_le32(gb);
498 case AV_CODEC_ID_ADPCM_EA_R3:
499 header_size = 4 + 5 * ch;
500 *coded_samples = bytestream2_get_be32(gb);
503 *coded_samples -= *coded_samples % 28;
504 nb_samples = (buf_size - header_size) * 2 / ch;
505 nb_samples -= nb_samples % 28;
507 case AV_CODEC_ID_ADPCM_IMA_DK3:
508 if (avctx->block_align > 0)
509 buf_size = FFMIN(buf_size, avctx->block_align);
510 nb_samples = ((buf_size - 16) * 2 / 3 * 4) / ch;
512 case AV_CODEC_ID_ADPCM_IMA_DK4:
513 if (avctx->block_align > 0)
514 buf_size = FFMIN(buf_size, avctx->block_align);
515 nb_samples = 1 + (buf_size - 4 * ch) * 2 / ch;
517 case AV_CODEC_ID_ADPCM_IMA_WAV:
518 if (avctx->block_align > 0)
519 buf_size = FFMIN(buf_size, avctx->block_align);
520 nb_samples = 1 + (buf_size - 4 * ch) / (4 * ch) * 8;
522 case AV_CODEC_ID_ADPCM_MS:
523 if (avctx->block_align > 0)
524 buf_size = FFMIN(buf_size, avctx->block_align);
525 nb_samples = 2 + (buf_size - 7 * ch) * 2 / ch;
527 case AV_CODEC_ID_ADPCM_SBPRO_2:
528 case AV_CODEC_ID_ADPCM_SBPRO_3:
529 case AV_CODEC_ID_ADPCM_SBPRO_4:
531 int samples_per_byte;
532 switch (avctx->codec->id) {
533 case AV_CODEC_ID_ADPCM_SBPRO_2: samples_per_byte = 4; break;
534 case AV_CODEC_ID_ADPCM_SBPRO_3: samples_per_byte = 3; break;
535 case AV_CODEC_ID_ADPCM_SBPRO_4: samples_per_byte = 2; break;
537 if (!s->status[0].step_index) {
541 nb_samples += buf_size * samples_per_byte / ch;
544 case AV_CODEC_ID_ADPCM_SWF:
546 int buf_bits = buf_size * 8 - 2;
547 int nbits = (bytestream2_get_byte(gb) >> 6) + 2;
548 int block_hdr_size = 22 * ch;
549 int block_size = block_hdr_size + nbits * ch * 4095;
550 int nblocks = buf_bits / block_size;
551 int bits_left = buf_bits - nblocks * block_size;
552 nb_samples = nblocks * 4096;
553 if (bits_left >= block_hdr_size)
554 nb_samples += 1 + (bits_left - block_hdr_size) / (nbits * ch);
557 case AV_CODEC_ID_ADPCM_THP:
558 has_coded_samples = 1;
559 bytestream2_skip(gb, 4); // channel size
560 *coded_samples = bytestream2_get_be32(gb);
561 *coded_samples -= *coded_samples % 14;
562 nb_samples = (buf_size - 80) / (8 * ch) * 14;
564 case AV_CODEC_ID_ADPCM_XA:
565 nb_samples = (buf_size / 128) * 224 / ch;
569 /* validate coded sample count */
570 if (has_coded_samples && (*coded_samples <= 0 || *coded_samples > nb_samples))
571 return AVERROR_INVALIDDATA;
576 static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
577 int *got_frame_ptr, AVPacket *avpkt)
579 const uint8_t *buf = avpkt->data;
580 int buf_size = avpkt->size;
581 ADPCMDecodeContext *c = avctx->priv_data;
582 ADPCMChannelStatus *cs;
583 int n, m, channel, i;
588 int nb_samples, coded_samples, ret;
591 bytestream2_init(&gb, buf, buf_size);
592 nb_samples = get_nb_samples(avctx, &gb, buf_size, &coded_samples);
593 if (nb_samples <= 0) {
594 av_log(avctx, AV_LOG_ERROR, "invalid number of samples in packet\n");
595 return AVERROR_INVALIDDATA;
598 /* get output buffer */
599 c->frame.nb_samples = nb_samples;
600 if ((ret = avctx->get_buffer(avctx, &c->frame)) < 0) {
601 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
604 samples = (short *)c->frame.data[0];
605 samples_p = (int16_t **)c->frame.extended_data;
607 /* use coded_samples when applicable */
608 /* it is always <= nb_samples, so the output buffer will be large enough */
610 if (coded_samples != nb_samples)
611 av_log(avctx, AV_LOG_WARNING, "mismatch in coded sample count\n");
612 c->frame.nb_samples = nb_samples = coded_samples;
615 st = avctx->channels == 2 ? 1 : 0;
617 switch(avctx->codec->id) {
618 case AV_CODEC_ID_ADPCM_IMA_QT:
619 /* In QuickTime, IMA is encoded by chunks of 34 bytes (=64 samples).
620 Channel data is interleaved per-chunk. */
621 for (channel = 0; channel < avctx->channels; channel++) {
624 cs = &(c->status[channel]);
625 /* (pppppp) (piiiiiii) */
627 /* Bits 15-7 are the _top_ 9 bits of the 16-bit initial predictor value */
628 predictor = sign_extend(bytestream2_get_be16u(&gb), 16);
629 step_index = predictor & 0x7F;
632 if (cs->step_index == step_index) {
633 int diff = predictor - cs->predictor;
640 cs->step_index = step_index;
641 cs->predictor = predictor;
644 if (cs->step_index > 88u){
645 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
646 channel, cs->step_index);
647 return AVERROR_INVALIDDATA;
650 samples = samples_p[channel];
652 for (m = 0; m < 64; m += 2) {
653 int byte = bytestream2_get_byteu(&gb);
654 samples[m ] = adpcm_ima_qt_expand_nibble(cs, byte & 0x0F, 3);
655 samples[m + 1] = adpcm_ima_qt_expand_nibble(cs, byte >> 4 , 3);
659 case AV_CODEC_ID_ADPCM_IMA_WAV:
660 for(i=0; i<avctx->channels; i++){
661 cs = &(c->status[i]);
662 cs->predictor = samples_p[i][0] = sign_extend(bytestream2_get_le16u(&gb), 16);
664 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
665 if (cs->step_index > 88u){
666 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
668 return AVERROR_INVALIDDATA;
672 for (n = 0; n < (nb_samples - 1) / 8; n++) {
673 for (i = 0; i < avctx->channels; i++) {
675 samples = &samples_p[i][1 + n * 8];
676 for (m = 0; m < 8; m += 2) {
677 int v = bytestream2_get_byteu(&gb);
678 samples[m ] = adpcm_ima_expand_nibble(cs, v & 0x0F, 3);
679 samples[m + 1] = adpcm_ima_expand_nibble(cs, v >> 4 , 3);
684 case AV_CODEC_ID_ADPCM_4XM:
685 for (i = 0; i < avctx->channels; i++)
686 c->status[i].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
688 for (i = 0; i < avctx->channels; i++) {
689 c->status[i].step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
690 if (c->status[i].step_index > 88u) {
691 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
692 i, c->status[i].step_index);
693 return AVERROR_INVALIDDATA;
697 for (i = 0; i < avctx->channels; i++) {
698 samples = (int16_t *)c->frame.data[i];
700 for (n = nb_samples >> 1; n > 0; n--) {
701 int v = bytestream2_get_byteu(&gb);
702 *samples++ = adpcm_ima_expand_nibble(cs, v & 0x0F, 4);
703 *samples++ = adpcm_ima_expand_nibble(cs, v >> 4 , 4);
707 case AV_CODEC_ID_ADPCM_MS:
711 block_predictor = bytestream2_get_byteu(&gb);
712 if (block_predictor > 6) {
713 av_log(avctx, AV_LOG_ERROR, "ERROR: block_predictor[0] = %d\n",
715 return AVERROR_INVALIDDATA;
717 c->status[0].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
718 c->status[0].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
720 block_predictor = bytestream2_get_byteu(&gb);
721 if (block_predictor > 6) {
722 av_log(avctx, AV_LOG_ERROR, "ERROR: block_predictor[1] = %d\n",
724 return AVERROR_INVALIDDATA;
726 c->status[1].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
727 c->status[1].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
729 c->status[0].idelta = sign_extend(bytestream2_get_le16u(&gb), 16);
731 c->status[1].idelta = sign_extend(bytestream2_get_le16u(&gb), 16);
734 c->status[0].sample1 = sign_extend(bytestream2_get_le16u(&gb), 16);
735 if (st) c->status[1].sample1 = sign_extend(bytestream2_get_le16u(&gb), 16);
736 c->status[0].sample2 = sign_extend(bytestream2_get_le16u(&gb), 16);
737 if (st) c->status[1].sample2 = sign_extend(bytestream2_get_le16u(&gb), 16);
739 *samples++ = c->status[0].sample2;
740 if (st) *samples++ = c->status[1].sample2;
741 *samples++ = c->status[0].sample1;
742 if (st) *samples++ = c->status[1].sample1;
743 for(n = (nb_samples - 2) >> (1 - st); n > 0; n--) {
744 int byte = bytestream2_get_byteu(&gb);
745 *samples++ = adpcm_ms_expand_nibble(&c->status[0 ], byte >> 4 );
746 *samples++ = adpcm_ms_expand_nibble(&c->status[st], byte & 0x0F);
750 case AV_CODEC_ID_ADPCM_IMA_DK4:
751 for (channel = 0; channel < avctx->channels; channel++) {
752 cs = &c->status[channel];
753 cs->predictor = *samples++ = sign_extend(bytestream2_get_le16u(&gb), 16);
754 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
755 if (cs->step_index > 88u){
756 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
757 channel, cs->step_index);
758 return AVERROR_INVALIDDATA;
761 for (n = nb_samples >> (1 - st); n > 0; n--) {
762 int v = bytestream2_get_byteu(&gb);
763 *samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v >> 4 , 3);
764 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
767 case AV_CODEC_ID_ADPCM_IMA_DK3:
771 int decode_top_nibble_next = 0;
773 const int16_t *samples_end = samples + avctx->channels * nb_samples;
775 bytestream2_skipu(&gb, 10);
776 c->status[0].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
777 c->status[1].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
778 c->status[0].step_index = bytestream2_get_byteu(&gb);
779 c->status[1].step_index = bytestream2_get_byteu(&gb);
780 if (c->status[0].step_index > 88u || c->status[1].step_index > 88u){
781 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i/%i\n",
782 c->status[0].step_index, c->status[1].step_index);
783 return AVERROR_INVALIDDATA;
785 /* sign extend the predictors */
786 diff_channel = c->status[1].predictor;
788 /* DK3 ADPCM support macro */
789 #define DK3_GET_NEXT_NIBBLE() \
790 if (decode_top_nibble_next) { \
791 nibble = last_byte >> 4; \
792 decode_top_nibble_next = 0; \
794 last_byte = bytestream2_get_byteu(&gb); \
795 nibble = last_byte & 0x0F; \
796 decode_top_nibble_next = 1; \
799 while (samples < samples_end) {
801 /* for this algorithm, c->status[0] is the sum channel and
802 * c->status[1] is the diff channel */
804 /* process the first predictor of the sum channel */
805 DK3_GET_NEXT_NIBBLE();
806 adpcm_ima_expand_nibble(&c->status[0], nibble, 3);
808 /* process the diff channel predictor */
809 DK3_GET_NEXT_NIBBLE();
810 adpcm_ima_expand_nibble(&c->status[1], nibble, 3);
812 /* process the first pair of stereo PCM samples */
813 diff_channel = (diff_channel + c->status[1].predictor) / 2;
814 *samples++ = c->status[0].predictor + c->status[1].predictor;
815 *samples++ = c->status[0].predictor - c->status[1].predictor;
817 /* process the second predictor of the sum channel */
818 DK3_GET_NEXT_NIBBLE();
819 adpcm_ima_expand_nibble(&c->status[0], nibble, 3);
821 /* process the second pair of stereo PCM samples */
822 diff_channel = (diff_channel + c->status[1].predictor) / 2;
823 *samples++ = c->status[0].predictor + c->status[1].predictor;
824 *samples++ = c->status[0].predictor - c->status[1].predictor;
828 case AV_CODEC_ID_ADPCM_IMA_ISS:
829 for (channel = 0; channel < avctx->channels; channel++) {
830 cs = &c->status[channel];
831 cs->predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
832 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
833 if (cs->step_index > 88u){
834 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
835 channel, cs->step_index);
836 return AVERROR_INVALIDDATA;
840 for (n = nb_samples >> (1 - st); n > 0; n--) {
842 int v = bytestream2_get_byteu(&gb);
843 /* nibbles are swapped for mono */
851 *samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v1, 3);
852 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v2, 3);
855 case AV_CODEC_ID_ADPCM_IMA_APC:
856 while (bytestream2_get_bytes_left(&gb) > 0) {
857 int v = bytestream2_get_byteu(&gb);
858 *samples++ = adpcm_ima_expand_nibble(&c->status[0], v >> 4 , 3);
859 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
862 case AV_CODEC_ID_ADPCM_IMA_WS:
863 if (c->vqa_version == 3) {
864 for (channel = 0; channel < avctx->channels; channel++) {
865 int16_t *smp = samples + channel;
867 for (n = nb_samples / 2; n > 0; n--) {
868 int v = bytestream2_get_byteu(&gb);
869 *smp = adpcm_ima_expand_nibble(&c->status[channel], v >> 4 , 3);
870 smp += avctx->channels;
871 *smp = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
872 smp += avctx->channels;
876 for (n = nb_samples / 2; n > 0; n--) {
877 for (channel = 0; channel < avctx->channels; channel++) {
878 int v = bytestream2_get_byteu(&gb);
879 *samples++ = adpcm_ima_expand_nibble(&c->status[channel], v >> 4 , 3);
880 samples[st] = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
882 samples += avctx->channels;
885 bytestream2_seek(&gb, 0, SEEK_END);
887 case AV_CODEC_ID_ADPCM_XA:
888 while (bytestream2_get_bytes_left(&gb) >= 128) {
889 if ((ret = xa_decode(avctx, samples, buf + bytestream2_tell(&gb), &c->status[0],
890 &c->status[1], avctx->channels)) < 0)
892 bytestream2_skipu(&gb, 128);
896 case AV_CODEC_ID_ADPCM_IMA_EA_EACS:
897 for (i=0; i<=st; i++) {
898 c->status[i].step_index = bytestream2_get_le32u(&gb);
899 if (c->status[i].step_index > 88u) {
900 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
901 i, c->status[i].step_index);
902 return AVERROR_INVALIDDATA;
905 for (i=0; i<=st; i++)
906 c->status[i].predictor = bytestream2_get_le32u(&gb);
908 for (n = nb_samples >> (1 - st); n > 0; n--) {
909 int byte = bytestream2_get_byteu(&gb);
910 *samples++ = adpcm_ima_expand_nibble(&c->status[0], byte >> 4, 3);
911 *samples++ = adpcm_ima_expand_nibble(&c->status[st], byte & 0x0F, 3);
914 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
915 for (n = nb_samples >> (1 - st); n > 0; n--) {
916 int byte = bytestream2_get_byteu(&gb);
917 *samples++ = adpcm_ima_expand_nibble(&c->status[0], byte >> 4, 6);
918 *samples++ = adpcm_ima_expand_nibble(&c->status[st], byte & 0x0F, 6);
921 case AV_CODEC_ID_ADPCM_EA:
923 int previous_left_sample, previous_right_sample;
924 int current_left_sample, current_right_sample;
925 int next_left_sample, next_right_sample;
926 int coeff1l, coeff2l, coeff1r, coeff2r;
927 int shift_left, shift_right;
929 /* Each EA ADPCM frame has a 12-byte header followed by 30-byte pieces,
930 each coding 28 stereo samples. */
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 static const enum AVSampleFormat sample_fmts_s16[] = { AV_SAMPLE_FMT_S16,
1273 AV_SAMPLE_FMT_NONE };
1274 static const enum AVSampleFormat sample_fmts_s16p[] = { AV_SAMPLE_FMT_S16,
1275 AV_SAMPLE_FMT_NONE };
1277 #define ADPCM_DECODER(id_, sample_fmts_, name_, long_name_) \
1278 AVCodec ff_ ## name_ ## _decoder = { \
1280 .type = AVMEDIA_TYPE_AUDIO, \
1282 .priv_data_size = sizeof(ADPCMDecodeContext), \
1283 .init = adpcm_decode_init, \
1284 .decode = adpcm_decode_frame, \
1285 .capabilities = CODEC_CAP_DR1, \
1286 .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
1287 .sample_fmts = sample_fmts_, \
1290 /* Note: Do not forget to add new entries to the Makefile as well. */
1291 ADPCM_DECODER(AV_CODEC_ID_ADPCM_4XM, sample_fmts_s16p, adpcm_4xm, "ADPCM 4X Movie");
1292 ADPCM_DECODER(AV_CODEC_ID_ADPCM_CT, sample_fmts_s16, adpcm_ct, "ADPCM Creative Technology");
1293 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA, sample_fmts_s16, adpcm_ea, "ADPCM Electronic Arts");
1294 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_MAXIS_XA, sample_fmts_s16, adpcm_ea_maxis_xa, "ADPCM Electronic Arts Maxis CDROM XA");
1295 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R1, sample_fmts_s16, adpcm_ea_r1, "ADPCM Electronic Arts R1");
1296 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R2, sample_fmts_s16, adpcm_ea_r2, "ADPCM Electronic Arts R2");
1297 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_R3, sample_fmts_s16, adpcm_ea_r3, "ADPCM Electronic Arts R3");
1298 ADPCM_DECODER(AV_CODEC_ID_ADPCM_EA_XAS, sample_fmts_s16, adpcm_ea_xas, "ADPCM Electronic Arts XAS");
1299 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_AMV, sample_fmts_s16, adpcm_ima_amv, "ADPCM IMA AMV");
1300 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_APC, sample_fmts_s16, adpcm_ima_apc, "ADPCM IMA CRYO APC");
1301 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK3, sample_fmts_s16, adpcm_ima_dk3, "ADPCM IMA Duck DK3");
1302 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_DK4, sample_fmts_s16, adpcm_ima_dk4, "ADPCM IMA Duck DK4");
1303 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_EA_EACS, sample_fmts_s16, adpcm_ima_ea_eacs, "ADPCM IMA Electronic Arts EACS");
1304 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_EA_SEAD, sample_fmts_s16, adpcm_ima_ea_sead, "ADPCM IMA Electronic Arts SEAD");
1305 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_ISS, sample_fmts_s16, adpcm_ima_iss, "ADPCM IMA Funcom ISS");
1306 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_QT, sample_fmts_s16p, adpcm_ima_qt, "ADPCM IMA QuickTime");
1307 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_SMJPEG, sample_fmts_s16, adpcm_ima_smjpeg, "ADPCM IMA Loki SDL MJPEG");
1308 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WAV, sample_fmts_s16p, adpcm_ima_wav, "ADPCM IMA WAV");
1309 ADPCM_DECODER(AV_CODEC_ID_ADPCM_IMA_WS, sample_fmts_s16, adpcm_ima_ws, "ADPCM IMA Westwood");
1310 ADPCM_DECODER(AV_CODEC_ID_ADPCM_MS, sample_fmts_s16, adpcm_ms, "ADPCM Microsoft");
1311 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_2, sample_fmts_s16, adpcm_sbpro_2, "ADPCM Sound Blaster Pro 2-bit");
1312 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_3, sample_fmts_s16, adpcm_sbpro_3, "ADPCM Sound Blaster Pro 2.6-bit");
1313 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SBPRO_4, sample_fmts_s16, adpcm_sbpro_4, "ADPCM Sound Blaster Pro 4-bit");
1314 ADPCM_DECODER(AV_CODEC_ID_ADPCM_SWF, sample_fmts_s16, adpcm_swf, "ADPCM Shockwave Flash");
1315 ADPCM_DECODER(AV_CODEC_ID_ADPCM_THP, sample_fmts_s16, adpcm_thp, "ADPCM Nintendo Gamecube THP");
1316 ADPCM_DECODER(AV_CODEC_ID_ADPCM_XA, sample_fmts_s16, adpcm_xa, "ADPCM CDROM XA");
1317 ADPCM_DECODER(AV_CODEC_ID_ADPCM_YAMAHA, sample_fmts_s16, adpcm_yamaha, "ADPCM Yamaha");