3 * Copyright (c) 2001-2003 The ffmpeg Project
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 * First version by Francois Revol (revol@free.fr)
25 * Fringe ADPCM codecs (e.g., DK3, DK4, Westwood)
26 * by Mike Melanson (melanson@pcisys.net)
27 * CD-ROM XA ADPCM codec by BERO
29 * Features and limitations:
31 * Reference documents:
32 * http://www.pcisys.net/~melanson/codecs/simpleaudio.html
33 * http://www.geocities.com/SiliconValley/8682/aud3.txt
34 * http://openquicktime.sourceforge.net/plugins.htm
35 * XAnim sources (xa_codec.c) http://www.rasnaimaging.com/people/lapus/download.html
36 * http://www.cs.ucla.edu/~leec/mediabench/applications.html
37 * SoX source code http://home.sprynet.com/~cbagwell/sox.html
40 * http://ku-www.ss.titech.ac.jp/~yatsushi/xaadpcm.html
41 * vagpack & depack http://homepages.compuserve.de/bITmASTER32/psx-index.html
42 * readstr http://www.geocities.co.jp/Playtown/2004/
47 #define CLAMP_TO_SHORT(value) \
50 else if (value < -32768) \
53 /* step_table[] and index_table[] are from the ADPCM reference source */
54 /* This is the index table: */
55 static const int index_table[16] = {
56 -1, -1, -1, -1, 2, 4, 6, 8,
57 -1, -1, -1, -1, 2, 4, 6, 8,
61 * This is the step table. Note that many programs use slight deviations from
62 * this table, but such deviations are negligible:
64 static const int step_table[89] = {
65 7, 8, 9, 10, 11, 12, 13, 14, 16, 17,
66 19, 21, 23, 25, 28, 31, 34, 37, 41, 45,
67 50, 55, 60, 66, 73, 80, 88, 97, 107, 118,
68 130, 143, 157, 173, 190, 209, 230, 253, 279, 307,
69 337, 371, 408, 449, 494, 544, 598, 658, 724, 796,
70 876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066,
71 2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358,
72 5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899,
73 15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767
76 /* These are for MS-ADPCM */
77 /* AdaptationTable[], AdaptCoeff1[], and AdaptCoeff2[] are from libsndfile */
78 static const int AdaptationTable[] = {
79 230, 230, 230, 230, 307, 409, 512, 614,
80 768, 614, 512, 409, 307, 230, 230, 230
83 static const int AdaptCoeff1[] = {
84 256, 512, 0, 192, 240, 460, 392
87 static const int AdaptCoeff2[] = {
88 0, -256, 0, 64, 0, -208, -232
91 /* These are for CD-ROM XA ADPCM */
92 static const int xa_adpcm_table[5][2] = {
102 typedef struct ADPCMChannelStatus {
104 short int step_index;
115 } ADPCMChannelStatus;
117 typedef struct ADPCMContext {
118 int channel; /* for stereo MOVs, decode left, then decode right, then tell it's decoded */
119 ADPCMChannelStatus status[2];
120 short sample_buffer[32]; /* hold left samples while waiting for right samples */
123 /* XXX: implement encoding */
125 #ifdef CONFIG_ENCODERS
126 static int adpcm_encode_init(AVCodecContext *avctx)
128 if (avctx->channels > 2)
129 return -1; /* only stereo or mono =) */
130 switch(avctx->codec->id) {
131 case CODEC_ID_ADPCM_IMA_QT:
132 fprintf(stderr, "ADPCM: codec admcp_ima_qt unsupported for encoding !\n");
133 avctx->frame_size = 64; /* XXX: can multiple of avctx->channels * 64 (left and right blocks are interleaved) */
136 case CODEC_ID_ADPCM_IMA_WAV:
137 avctx->frame_size = (BLKSIZE - 4 * avctx->channels) * 8 / (4 * avctx->channels) + 1; /* each 16 bits sample gives one nibble */
138 /* and we have 4 bytes per channel overhead */
139 avctx->block_align = BLKSIZE;
140 /* seems frame_size isn't taken into account... have to buffer the samples :-( */
142 case CODEC_ID_ADPCM_MS:
143 fprintf(stderr, "ADPCM: codec admcp_ms unsupported for encoding !\n");
151 avctx->coded_frame= avcodec_alloc_frame();
152 avctx->coded_frame->key_frame= 1;
157 static int adpcm_encode_close(AVCodecContext *avctx)
159 av_freep(&avctx->coded_frame);
165 static inline unsigned char adpcm_ima_compress_sample(ADPCMChannelStatus *c, short sample)
168 unsigned char nibble;
170 int sign = 0; /* sign bit of the nibble (MSB) */
171 int delta, predicted_delta;
173 delta = sample - c->prev_sample;
180 step_index = c->step_index;
182 /* nibble = 4 * delta / step_table[step_index]; */
183 nibble = (delta << 2) / step_table[step_index];
188 step_index += index_table[nibble];
194 /* what the decoder will find */
195 predicted_delta = ((step_table[step_index] * nibble) / 4) + (step_table[step_index] / 8);
198 c->prev_sample -= predicted_delta;
200 c->prev_sample += predicted_delta;
202 CLAMP_TO_SHORT(c->prev_sample);
205 nibble += sign << 3; /* sign * 8 */
208 c->step_index = step_index;
213 static int adpcm_encode_frame(AVCodecContext *avctx,
214 unsigned char *frame, int buf_size, void *data)
219 ADPCMContext *c = avctx->priv_data;
222 samples = (short *)data;
223 /* n = (BLKSIZE - 4 * avctx->channels) / (2 * 8 * avctx->channels); */
225 switch(avctx->codec->id) {
226 case CODEC_ID_ADPCM_IMA_QT: /* XXX: can't test until we get .mov writer */
228 case CODEC_ID_ADPCM_IMA_WAV:
229 n = avctx->frame_size / 8;
230 c->status[0].prev_sample = (signed short)samples[0]; /* XXX */
231 /* c->status[0].step_index = 0; *//* XXX: not sure how to init the state machine */
232 *dst++ = (c->status[0].prev_sample) & 0xFF; /* little endian */
233 *dst++ = (c->status[0].prev_sample >> 8) & 0xFF;
234 *dst++ = (unsigned char)c->status[0].step_index;
235 *dst++ = 0; /* unknown */
237 if (avctx->channels == 2) {
238 c->status[1].prev_sample = (signed short)samples[1];
239 /* c->status[1].step_index = 0; */
240 *dst++ = (c->status[1].prev_sample) & 0xFF;
241 *dst++ = (c->status[1].prev_sample >> 8) & 0xFF;
242 *dst++ = (unsigned char)c->status[1].step_index;
247 /* stereo: 4 bytes (8 samples) for left, 4 bytes for right, 4 bytes left, ... */
249 *dst = adpcm_ima_compress_sample(&c->status[0], samples[0]) & 0x0F;
250 *dst |= (adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels]) << 4) & 0xF0;
252 *dst = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 2]) & 0x0F;
253 *dst |= (adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 3]) << 4) & 0xF0;
255 *dst = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 4]) & 0x0F;
256 *dst |= (adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 5]) << 4) & 0xF0;
258 *dst = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 6]) & 0x0F;
259 *dst |= (adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 7]) << 4) & 0xF0;
262 if (avctx->channels == 2) {
263 *dst = adpcm_ima_compress_sample(&c->status[1], samples[1]);
264 *dst |= adpcm_ima_compress_sample(&c->status[1], samples[3]) << 4;
266 *dst = adpcm_ima_compress_sample(&c->status[1], samples[5]);
267 *dst |= adpcm_ima_compress_sample(&c->status[1], samples[7]) << 4;
269 *dst = adpcm_ima_compress_sample(&c->status[1], samples[9]);
270 *dst |= adpcm_ima_compress_sample(&c->status[1], samples[11]) << 4;
272 *dst = adpcm_ima_compress_sample(&c->status[1], samples[13]);
273 *dst |= adpcm_ima_compress_sample(&c->status[1], samples[15]) << 4;
276 samples += 8 * avctx->channels;
284 #endif //CONFIG_ENCODERS
286 static int adpcm_decode_init(AVCodecContext * avctx)
288 ADPCMContext *c = avctx->priv_data;
291 c->status[0].predictor = c->status[1].predictor = 0;
292 c->status[0].step_index = c->status[1].step_index = 0;
293 c->status[0].step = c->status[1].step = 0;
295 switch(avctx->codec->id) {
302 static inline short adpcm_ima_expand_nibble(ADPCMChannelStatus *c, char nibble)
306 int sign, delta, diff, step;
308 step = step_table[c->step_index];
309 step_index = c->step_index + index_table[(unsigned)nibble];
310 if (step_index < 0) step_index = 0;
311 else if (step_index > 88) step_index = 88;
315 /* perform direct multiplication instead of series of jumps proposed by
316 * the reference ADPCM implementation since modern CPUs can do the mults
318 diff = ((2 * delta + 1) * step) >> 3;
319 predictor = c->predictor;
320 if (sign) predictor -= diff;
321 else predictor += diff;
323 CLAMP_TO_SHORT(predictor);
324 c->predictor = predictor;
325 c->step_index = step_index;
327 return (short)predictor;
330 static inline short adpcm_4xa_expand_nibble(ADPCMChannelStatus *c, char nibble)
334 int sign, delta, diff, step;
336 step = step_table[c->step_index];
337 step_index = c->step_index + index_table[(unsigned)nibble];
338 if (step_index < 0) step_index = 0;
339 else if (step_index > 88) step_index = 88;
344 diff = (delta*step + (step>>1))>>3; // difference to code above
346 predictor = c->predictor;
347 if (sign) predictor -= diff;
348 else predictor += diff;
350 CLAMP_TO_SHORT(predictor);
351 c->predictor = predictor;
352 c->step_index = step_index;
354 return (short)predictor;
357 static inline short adpcm_ms_expand_nibble(ADPCMChannelStatus *c, char nibble)
361 predictor = (((c->sample1) * (c->coeff1)) + ((c->sample2) * (c->coeff2))) / 256;
362 predictor += (signed)((nibble & 0x08)?(nibble - 0x10):(nibble)) * c->idelta;
363 CLAMP_TO_SHORT(predictor);
365 c->sample2 = c->sample1;
366 c->sample1 = predictor;
367 c->idelta = (AdaptationTable[(int)nibble] * c->idelta) / 256;
368 if (c->idelta < 16) c->idelta = 16;
370 return (short)predictor;
373 static void xa_decode(short *out, const unsigned char *in,
374 ADPCMChannelStatus *left, ADPCMChannelStatus *right, int inc)
377 int shift,filter,f0,f1;
383 shift = 12 - (in[4+i*2] & 15);
384 filter = in[4+i*2] >> 4;
385 f0 = xa_adpcm_table[filter][0];
386 f1 = xa_adpcm_table[filter][1];
394 t = (signed char)(d<<4)>>4;
395 s = ( t<<shift ) + ((s_1*f0 + s_2*f1+32)>>6);
403 if (inc==2) { /* stereo */
406 s_1 = right->sample1;
407 s_2 = right->sample2;
408 out = out + 1 - 28*2;
411 shift = 12 - (in[5+i*2] & 15);
412 filter = in[5+i*2] >> 4;
414 f0 = xa_adpcm_table[filter][0];
415 f1 = xa_adpcm_table[filter][1];
420 t = (signed char)d >> 4;
421 s = ( t<<shift ) + ((s_1*f0 + s_2*f1+32)>>6);
429 if (inc==2) { /* stereo */
430 right->sample1 = s_1;
431 right->sample2 = s_2;
441 /* DK3 ADPCM support macro */
442 #define DK3_GET_NEXT_NIBBLE() \
443 if (decode_top_nibble_next) \
445 nibble = (last_byte >> 4) & 0x0F; \
446 decode_top_nibble_next = 0; \
450 last_byte = *src++; \
451 if (src >= buf + buf_size) break; \
452 nibble = last_byte & 0x0F; \
453 decode_top_nibble_next = 1; \
456 static int adpcm_decode_frame(AVCodecContext *avctx,
457 void *data, int *data_size,
458 uint8_t *buf, int buf_size)
460 ADPCMContext *c = avctx->priv_data;
461 ADPCMChannelStatus *cs;
462 int n, m, channel, i;
463 int block_predictor[2];
468 /* DK3 ADPCM accounting variables */
469 unsigned char last_byte = 0;
470 unsigned char nibble;
471 int decode_top_nibble_next = 0;
477 st = avctx->channels == 2;
479 switch(avctx->codec->id) {
480 case CODEC_ID_ADPCM_IMA_QT:
481 n = (buf_size - 2);/* >> 2*avctx->channels;*/
482 channel = c->channel;
483 cs = &(c->status[channel]);
484 /* (pppppp) (piiiiiii) */
486 /* Bits 15-7 are the _top_ 9 bits of the 16-bit initial predictor value */
487 cs->predictor = (*src++) << 8;
488 cs->predictor |= (*src & 0x80);
489 cs->predictor &= 0xFF80;
492 if(cs->predictor & 0x8000)
493 cs->predictor -= 0x10000;
495 CLAMP_TO_SHORT(cs->predictor);
497 cs->step_index = (*src++) & 0x7F;
499 if (cs->step_index > 88) fprintf(stderr, "ERROR: step_index = %i\n", cs->step_index);
500 if (cs->step_index > 88) cs->step_index = 88;
502 cs->step = step_table[cs->step_index];
507 *samples++ = cs->predictor;
510 for(m=32; n>0 && m>0; n--, m--) { /* in QuickTime, IMA is encoded by chuncks of 34 bytes (=64 samples) */
511 *samples = adpcm_ima_expand_nibble(cs, src[0] & 0x0F);
512 samples += avctx->channels;
513 *samples = adpcm_ima_expand_nibble(cs, (src[0] >> 4) & 0x0F);
514 samples += avctx->channels;
518 if(st) { /* handle stereo interlacing */
519 c->channel = (channel + 1) % 2; /* we get one packet for left, then one for right data */
520 if(channel == 0) { /* wait for the other packet before outputing anything */
526 case CODEC_ID_ADPCM_IMA_WAV:
527 if (avctx->block_align != 0 && buf_size > avctx->block_align)
528 buf_size = avctx->block_align;
530 // XXX: do as per-channel loop
531 cs = &(c->status[0]);
532 cs->predictor = (*src++) & 0x0FF;
533 cs->predictor |= ((*src++) << 8) & 0x0FF00;
534 if(cs->predictor & 0x8000)
535 cs->predictor -= 0x10000;
536 CLAMP_TO_SHORT(cs->predictor);
538 // XXX: is this correct ??: *samples++ = cs->predictor;
540 cs->step_index = *src++;
541 if (cs->step_index < 0) cs->step_index = 0;
542 if (cs->step_index > 88) cs->step_index = 88;
543 if (*src++) fprintf(stderr, "unused byte should be null !!\n"); /* unused */
546 cs = &(c->status[1]);
547 cs->predictor = (*src++) & 0x0FF;
548 cs->predictor |= ((*src++) << 8) & 0x0FF00;
549 if(cs->predictor & 0x8000)
550 cs->predictor -= 0x10000;
551 CLAMP_TO_SHORT(cs->predictor);
553 // XXX: is this correct ??: *samples++ = cs->predictor;
555 cs->step_index = *src++;
556 if (cs->step_index < 0) cs->step_index = 0;
557 if (cs->step_index > 88) cs->step_index = 88;
558 src++; /* if != 0 -> out-of-sync */
561 for(m=4; src < (buf + buf_size);) {
562 *samples++ = adpcm_ima_expand_nibble(&c->status[0], src[0] & 0x0F);
564 *samples++ = adpcm_ima_expand_nibble(&c->status[1], src[4] & 0x0F);
565 *samples++ = adpcm_ima_expand_nibble(&c->status[0], (src[0] >> 4) & 0x0F);
567 *samples++ = adpcm_ima_expand_nibble(&c->status[1], (src[4] >> 4) & 0x0F);
576 case CODEC_ID_ADPCM_4XM:
577 cs = &(c->status[0]);
578 c->status[0].predictor= (int16_t)(src[0] + (src[1]<<8)); src+=2;
580 c->status[1].predictor= (int16_t)(src[0] + (src[1]<<8)); src+=2;
582 c->status[0].step_index= (int16_t)(src[0] + (src[1]<<8)); src+=2;
584 c->status[1].step_index= (int16_t)(src[0] + (src[1]<<8)); src+=2;
586 // if (cs->step_index < 0) cs->step_index = 0;
587 // if (cs->step_index > 88) cs->step_index = 88;
589 m= (buf_size - (src - buf))>>st;
590 //printf("%d %d %d %d\n", st, m, c->status[0].predictor, c->status[0].step_index);
591 //FIXME / XXX decode chanels individual & interleave samples
593 *samples++ = adpcm_4xa_expand_nibble(&c->status[0], src[i] & 0x0F);
595 *samples++ = adpcm_4xa_expand_nibble(&c->status[1], src[i+m] & 0x0F);
596 *samples++ = adpcm_4xa_expand_nibble(&c->status[0], src[i] >> 4);
598 *samples++ = adpcm_4xa_expand_nibble(&c->status[1], src[i+m] >> 4);
604 case CODEC_ID_ADPCM_MS:
605 if (avctx->block_align != 0 && buf_size > avctx->block_align)
606 buf_size = avctx->block_align;
607 n = buf_size - 7 * avctx->channels;
610 block_predictor[0] = (*src++); /* should be bound */
611 block_predictor[0] = (block_predictor[0] < 0)?(0):((block_predictor[0] > 7)?(7):(block_predictor[0]));
612 block_predictor[1] = 0;
614 block_predictor[1] = (*src++);
615 block_predictor[1] = (block_predictor[1] < 0)?(0):((block_predictor[1] > 7)?(7):(block_predictor[1]));
616 c->status[0].idelta = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
617 if (c->status[0].idelta & 0x08000)
618 c->status[0].idelta -= 0x10000;
621 c->status[1].idelta = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
622 if (st && c->status[1].idelta & 0x08000)
623 c->status[1].idelta |= 0xFFFF0000;
626 c->status[0].coeff1 = AdaptCoeff1[block_predictor[0]];
627 c->status[0].coeff2 = AdaptCoeff2[block_predictor[0]];
628 c->status[1].coeff1 = AdaptCoeff1[block_predictor[1]];
629 c->status[1].coeff2 = AdaptCoeff2[block_predictor[1]];
631 c->status[0].sample1 = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
633 if (st) c->status[1].sample1 = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
635 c->status[0].sample2 = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
637 if (st) c->status[1].sample2 = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
640 *samples++ = c->status[0].sample1;
641 if (st) *samples++ = c->status[1].sample1;
642 *samples++ = c->status[0].sample2;
643 if (st) *samples++ = c->status[1].sample2;
645 *samples++ = adpcm_ms_expand_nibble(&c->status[0], (src[0] >> 4) & 0x0F);
646 *samples++ = adpcm_ms_expand_nibble(&c->status[st], src[0] & 0x0F);
650 case CODEC_ID_ADPCM_IMA_DK4:
651 if (avctx->block_align != 0 && buf_size > avctx->block_align)
652 buf_size = avctx->block_align;
654 c->status[0].predictor = (src[0] | (src[1] << 8));
655 c->status[0].step_index = src[2];
657 if(c->status[0].predictor & 0x8000)
658 c->status[0].predictor -= 0x10000;
659 *samples++ = c->status[0].predictor;
661 c->status[1].predictor = (src[0] | (src[1] << 8));
662 c->status[1].step_index = src[2];
664 if(c->status[1].predictor & 0x8000)
665 c->status[1].predictor -= 0x10000;
666 *samples++ = c->status[1].predictor;
668 while (src < buf + buf_size) {
670 /* take care of the top nibble (always left or mono channel) */
671 *samples++ = adpcm_ima_expand_nibble(&c->status[0],
672 (src[0] >> 4) & 0x0F);
674 /* take care of the bottom nibble, which is right sample for
675 * stereo, or another mono sample */
677 *samples++ = adpcm_ima_expand_nibble(&c->status[1],
680 *samples++ = adpcm_ima_expand_nibble(&c->status[0],
686 case CODEC_ID_ADPCM_IMA_DK3:
687 if (avctx->block_align != 0 && buf_size > avctx->block_align)
688 buf_size = avctx->block_align;
690 c->status[0].predictor = (src[10] | (src[11] << 8));
691 c->status[1].predictor = (src[12] | (src[13] << 8));
692 c->status[0].step_index = src[14];
693 c->status[1].step_index = src[15];
694 /* sign extend the predictors */
695 if(c->status[0].predictor & 0x8000)
696 c->status[0].predictor -= 0x10000;
697 if(c->status[1].predictor & 0x8000)
698 c->status[1].predictor -= 0x10000;
700 diff_channel = c->status[1].predictor;
702 /* the DK3_GET_NEXT_NIBBLE macro issues the break statement when
703 * the buffer is consumed */
706 /* for this algorithm, c->status[0] is the sum channel and
707 * c->status[1] is the diff channel */
709 /* process the first predictor of the sum channel */
710 DK3_GET_NEXT_NIBBLE();
711 adpcm_ima_expand_nibble(&c->status[0], nibble);
713 /* process the diff channel predictor */
714 DK3_GET_NEXT_NIBBLE();
715 adpcm_ima_expand_nibble(&c->status[1], nibble);
717 /* process the first pair of stereo PCM samples */
718 diff_channel = (diff_channel + c->status[1].predictor) / 2;
719 *samples++ = c->status[0].predictor + c->status[1].predictor;
720 *samples++ = c->status[0].predictor - c->status[1].predictor;
722 /* process the second predictor of the sum channel */
723 DK3_GET_NEXT_NIBBLE();
724 adpcm_ima_expand_nibble(&c->status[0], nibble);
726 /* process the second pair of stereo PCM samples */
727 diff_channel = (diff_channel + c->status[1].predictor) / 2;
728 *samples++ = c->status[0].predictor + c->status[1].predictor;
729 *samples++ = c->status[0].predictor - c->status[1].predictor;
732 case CODEC_ID_ADPCM_IMA_WS:
733 /* no per-block initialization; just start decoding the data */
734 while (src < buf + buf_size) {
737 *samples++ = adpcm_ima_expand_nibble(&c->status[0],
738 (src[0] >> 4) & 0x0F);
739 *samples++ = adpcm_ima_expand_nibble(&c->status[1],
742 *samples++ = adpcm_ima_expand_nibble(&c->status[0],
743 (src[0] >> 4) & 0x0F);
744 *samples++ = adpcm_ima_expand_nibble(&c->status[0],
751 case CODEC_ID_ADPCM_XA:
752 c->status[0].sample1 = c->status[0].sample2 =
753 c->status[1].sample1 = c->status[1].sample2 = 0;
754 while (buf_size >= 128) {
755 xa_decode(samples, src, &c->status[0], &c->status[1],
766 *data_size = (uint8_t *)samples - (uint8_t *)data;
772 #ifdef CONFIG_ENCODERS
773 #define ADPCM_ENCODER(id,name) \
774 AVCodec name ## _encoder = { \
778 sizeof(ADPCMContext), \
780 adpcm_encode_frame, \
781 adpcm_encode_close, \
785 #define ADPCM_ENCODER(id,name)
788 #ifdef CONFIG_DECODERS
789 #define ADPCM_DECODER(id,name) \
790 AVCodec name ## _decoder = { \
794 sizeof(ADPCMContext), \
798 adpcm_decode_frame, \
801 #define ADPCM_DECODER(id,name)
804 #define ADPCM_CODEC(id, name) \
805 ADPCM_ENCODER(id,name) ADPCM_DECODER(id,name)
807 ADPCM_CODEC(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt);
808 ADPCM_CODEC(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav);
809 ADPCM_CODEC(CODEC_ID_ADPCM_IMA_DK3, adpcm_ima_dk3);
810 ADPCM_CODEC(CODEC_ID_ADPCM_IMA_DK4, adpcm_ima_dk4);
811 ADPCM_CODEC(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws);
812 ADPCM_CODEC(CODEC_ID_ADPCM_MS, adpcm_ms);
813 ADPCM_CODEC(CODEC_ID_ADPCM_4XM, adpcm_4xm);
814 ADPCM_CODEC(CODEC_ID_ADPCM_XA, adpcm_xa);
815 ADPCM_CODEC(CODEC_ID_ADPCM_ADX, adpcm_adx);