/*
- * ADPCM codecs
* Copyright (c) 2001-2003 The ffmpeg Project
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
#include "get_bits.h"
#include "put_bits.h"
#include "bytestream.h"
+#include "adpcm.h"
+#include "adpcm_data.h"
/**
* @file
- * ADPCM codecs.
+ * ADPCM decoders
* First version by Francois Revol (revol@free.fr)
* Fringe ADPCM codecs (e.g., DK3, DK4, Westwood)
* by Mike Melanson (melanson@pcisys.net)
* Features and limitations:
*
* Reference documents:
- * http://www.pcisys.net/~melanson/codecs/simpleaudio.html
- * http://www.geocities.com/SiliconValley/8682/aud3.txt
- * http://openquicktime.sourceforge.net/plugins.htm
- * XAnim sources (xa_codec.c) http://www.rasnaimaging.com/people/lapus/download.html
- * http://www.cs.ucla.edu/~leec/mediabench/applications.html
- * SoX source code http://home.sprynet.com/~cbagwell/sox.html
+ * http://wiki.multimedia.cx/index.php?title=Category:ADPCM_Audio_Codecs
+ * http://www.pcisys.net/~melanson/codecs/simpleaudio.html [dead]
+ * http://www.geocities.com/SiliconValley/8682/aud3.txt [dead]
+ * http://openquicktime.sourceforge.net/
+ * XAnim sources (xa_codec.c) http://xanim.polter.net/
+ * http://www.cs.ucla.edu/~leec/mediabench/applications.html [dead]
+ * SoX source code http://sox.sourceforge.net/
*
* CD-ROM XA:
- * http://ku-www.ss.titech.ac.jp/~yatsushi/xaadpcm.html
- * vagpack & depack http://homepages.compuserve.de/bITmASTER32/psx-index.html
+ * http://ku-www.ss.titech.ac.jp/~yatsushi/xaadpcm.html [dead]
+ * vagpack & depack http://homepages.compuserve.de/bITmASTER32/psx-index.html [dead]
* readstr http://www.geocities.co.jp/Playtown/2004/
*/
-#define BLKSIZE 1024
-
-/* step_table[] and index_table[] are from the ADPCM reference source */
-/* This is the index table: */
-static const int index_table[16] = {
- -1, -1, -1, -1, 2, 4, 6, 8,
- -1, -1, -1, -1, 2, 4, 6, 8,
-};
-
-/**
- * This is the step table. Note that many programs use slight deviations from
- * this table, but such deviations are negligible:
- */
-static const int step_table[89] = {
- 7, 8, 9, 10, 11, 12, 13, 14, 16, 17,
- 19, 21, 23, 25, 28, 31, 34, 37, 41, 45,
- 50, 55, 60, 66, 73, 80, 88, 97, 107, 118,
- 130, 143, 157, 173, 190, 209, 230, 253, 279, 307,
- 337, 371, 408, 449, 494, 544, 598, 658, 724, 796,
- 876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066,
- 2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358,
- 5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899,
- 15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767
-};
-
-/* These are for MS-ADPCM */
-/* AdaptationTable[], AdaptCoeff1[], and AdaptCoeff2[] are from libsndfile */
-static const int AdaptationTable[] = {
- 230, 230, 230, 230, 307, 409, 512, 614,
- 768, 614, 512, 409, 307, 230, 230, 230
-};
-
-/** Divided by 4 to fit in 8-bit integers */
-static const uint8_t AdaptCoeff1[] = {
- 64, 128, 0, 48, 60, 115, 98
-};
-
-/** Divided by 4 to fit in 8-bit integers */
-static const int8_t AdaptCoeff2[] = {
- 0, -64, 0, 16, 0, -52, -58
-};
-
/* These are for CD-ROM XA ADPCM */
static const int xa_adpcm_table[5][2] = {
- { 0, 0 },
- { 60, 0 },
- { 115, -52 },
- { 98, -55 },
- { 122, -60 }
+ { 0, 0 },
+ { 60, 0 },
+ { 115, -52 },
+ { 98, -55 },
+ { 122, -60 }
};
static const int ea_adpcm_table[] = {
- 0, 240, 460, 392, 0, 0, -208, -220, 0, 1,
- 3, 4, 7, 8, 10, 11, 0, -1, -3, -4
+ 0, 240, 460, 392,
+ 0, 0, -208, -220,
+ 0, 1, 3, 4,
+ 7, 8, 10, 11,
+ 0, -1, -3, -4
};
// padded to zero where table size is less then 16
/*5*/ { -1, -1, -1, -1, -1, -1, -1, -1, 1, 2, 4, 6, 8, 10, 13, 16 }
};
-static const int yamaha_indexscale[] = {
- 230, 230, 230, 230, 307, 409, 512, 614,
- 230, 230, 230, 230, 307, 409, 512, 614
-};
-
-static const int yamaha_difflookup[] = {
- 1, 3, 5, 7, 9, 11, 13, 15,
- -1, -3, -5, -7, -9, -11, -13, -15
-};
-
/* end of tables */
-typedef struct ADPCMChannelStatus {
- int predictor;
- short int step_index;
- int step;
- /* for encoding */
- int prev_sample;
-
- /* MS version */
- short sample1;
- short sample2;
- int coeff1;
- int coeff2;
- int idelta;
-} ADPCMChannelStatus;
-
-typedef struct TrellisPath {
- int nibble;
- int prev;
-} TrellisPath;
-
-typedef struct TrellisNode {
- uint32_t ssd;
- int path;
- int sample1;
- int sample2;
- int step;
-} TrellisNode;
-
-typedef struct ADPCMContext {
+typedef struct ADPCMDecodeContext {
ADPCMChannelStatus status[6];
- TrellisPath *paths;
- TrellisNode *node_buf;
- TrellisNode **nodep_buf;
- uint8_t *trellis_hash;
-} ADPCMContext;
-
-#define FREEZE_INTERVAL 128
-
-/* XXX: implement encoding */
-
-#if CONFIG_ENCODERS
-static av_cold int adpcm_encode_init(AVCodecContext *avctx)
-{
- ADPCMContext *s = avctx->priv_data;
- uint8_t *extradata;
- int i;
- if (avctx->channels > 2)
- return -1; /* only stereo or mono =) */
-
- if(avctx->trellis && (unsigned)avctx->trellis > 16U){
- av_log(avctx, AV_LOG_ERROR, "invalid trellis size\n");
- return -1;
- }
-
- if (avctx->trellis) {
- int frontier = 1 << avctx->trellis;
- int max_paths = frontier * FREEZE_INTERVAL;
- FF_ALLOC_OR_GOTO(avctx, s->paths, max_paths * sizeof(*s->paths), error);
- FF_ALLOC_OR_GOTO(avctx, s->node_buf, 2 * frontier * sizeof(*s->node_buf), error);
- FF_ALLOC_OR_GOTO(avctx, s->nodep_buf, 2 * frontier * sizeof(*s->nodep_buf), error);
- FF_ALLOC_OR_GOTO(avctx, s->trellis_hash, 65536 * sizeof(*s->trellis_hash), error);
- }
-
- switch(avctx->codec->id) {
- case CODEC_ID_ADPCM_IMA_WAV:
- avctx->frame_size = (BLKSIZE - 4 * avctx->channels) * 8 / (4 * avctx->channels) + 1; /* each 16 bits sample gives one nibble */
- /* and we have 4 bytes per channel overhead */
- avctx->block_align = BLKSIZE;
- /* seems frame_size isn't taken into account... have to buffer the samples :-( */
- break;
- case CODEC_ID_ADPCM_IMA_QT:
- avctx->frame_size = 64;
- avctx->block_align = 34 * avctx->channels;
- break;
- case CODEC_ID_ADPCM_MS:
- avctx->frame_size = (BLKSIZE - 7 * avctx->channels) * 2 / avctx->channels + 2; /* each 16 bits sample gives one nibble */
- /* and we have 7 bytes per channel overhead */
- avctx->block_align = BLKSIZE;
- avctx->extradata_size = 32;
- extradata = avctx->extradata = av_malloc(avctx->extradata_size);
- if (!extradata)
- return AVERROR(ENOMEM);
- bytestream_put_le16(&extradata, avctx->frame_size);
- bytestream_put_le16(&extradata, 7); /* wNumCoef */
- for (i = 0; i < 7; i++) {
- bytestream_put_le16(&extradata, AdaptCoeff1[i] * 4);
- bytestream_put_le16(&extradata, AdaptCoeff2[i] * 4);
- }
- break;
- case CODEC_ID_ADPCM_YAMAHA:
- avctx->frame_size = BLKSIZE * avctx->channels;
- avctx->block_align = BLKSIZE;
- break;
- case CODEC_ID_ADPCM_SWF:
- if (avctx->sample_rate != 11025 &&
- avctx->sample_rate != 22050 &&
- avctx->sample_rate != 44100) {
- av_log(avctx, AV_LOG_ERROR, "Sample rate must be 11025, 22050 or 44100\n");
- goto error;
- }
- avctx->frame_size = 512 * (avctx->sample_rate / 11025);
- break;
- default:
- goto error;
- }
-
- avctx->coded_frame= avcodec_alloc_frame();
- avctx->coded_frame->key_frame= 1;
-
- return 0;
-error:
- av_freep(&s->paths);
- av_freep(&s->node_buf);
- av_freep(&s->nodep_buf);
- av_freep(&s->trellis_hash);
- return -1;
-}
-
-static av_cold int adpcm_encode_close(AVCodecContext *avctx)
-{
- ADPCMContext *s = avctx->priv_data;
- av_freep(&avctx->coded_frame);
- av_freep(&s->paths);
- av_freep(&s->node_buf);
- av_freep(&s->nodep_buf);
- av_freep(&s->trellis_hash);
-
- return 0;
-}
-
-
-static inline unsigned char adpcm_ima_compress_sample(ADPCMChannelStatus *c, short sample)
-{
- int delta = sample - c->prev_sample;
- int nibble = FFMIN(7, abs(delta)*4/step_table[c->step_index]) + (delta<0)*8;
- c->prev_sample += ((step_table[c->step_index] * yamaha_difflookup[nibble]) / 8);
- c->prev_sample = av_clip_int16(c->prev_sample);
- c->step_index = av_clip(c->step_index + index_table[nibble], 0, 88);
- return nibble;
-}
-
-static inline unsigned char adpcm_ms_compress_sample(ADPCMChannelStatus *c, short sample)
-{
- int predictor, nibble, bias;
-
- predictor = (((c->sample1) * (c->coeff1)) + ((c->sample2) * (c->coeff2))) / 64;
-
- nibble= sample - predictor;
- if(nibble>=0) bias= c->idelta/2;
- else bias=-c->idelta/2;
-
- nibble= (nibble + bias) / c->idelta;
- nibble= av_clip(nibble, -8, 7)&0x0F;
-
- predictor += (signed)((nibble & 0x08)?(nibble - 0x10):(nibble)) * c->idelta;
-
- c->sample2 = c->sample1;
- c->sample1 = av_clip_int16(predictor);
-
- c->idelta = (AdaptationTable[(int)nibble] * c->idelta) >> 8;
- if (c->idelta < 16) c->idelta = 16;
-
- return nibble;
-}
-
-static inline unsigned char adpcm_yamaha_compress_sample(ADPCMChannelStatus *c, short sample)
-{
- int nibble, delta;
-
- if(!c->step) {
- c->predictor = 0;
- c->step = 127;
- }
-
- delta = sample - c->predictor;
-
- nibble = FFMIN(7, abs(delta)*4/c->step) + (delta<0)*8;
-
- c->predictor += ((c->step * yamaha_difflookup[nibble]) / 8);
- c->predictor = av_clip_int16(c->predictor);
- c->step = (c->step * yamaha_indexscale[nibble]) >> 8;
- c->step = av_clip(c->step, 127, 24567);
-
- return nibble;
-}
-
-static void adpcm_compress_trellis(AVCodecContext *avctx, const short *samples,
- uint8_t *dst, ADPCMChannelStatus *c, int n)
-{
- //FIXME 6% faster if frontier is a compile-time constant
- ADPCMContext *s = avctx->priv_data;
- const int frontier = 1 << avctx->trellis;
- const int stride = avctx->channels;
- const int version = avctx->codec->id;
- TrellisPath *paths = s->paths, *p;
- TrellisNode *node_buf = s->node_buf;
- TrellisNode **nodep_buf = s->nodep_buf;
- TrellisNode **nodes = nodep_buf; // nodes[] is always sorted by .ssd
- TrellisNode **nodes_next = nodep_buf + frontier;
- int pathn = 0, froze = -1, i, j, k, generation = 0;
- uint8_t *hash = s->trellis_hash;
- memset(hash, 0xff, 65536 * sizeof(*hash));
-
- memset(nodep_buf, 0, 2 * frontier * sizeof(*nodep_buf));
- nodes[0] = node_buf + frontier;
- nodes[0]->ssd = 0;
- nodes[0]->path = 0;
- nodes[0]->step = c->step_index;
- nodes[0]->sample1 = c->sample1;
- nodes[0]->sample2 = c->sample2;
- if((version == CODEC_ID_ADPCM_IMA_WAV) || (version == CODEC_ID_ADPCM_IMA_QT) || (version == CODEC_ID_ADPCM_SWF))
- nodes[0]->sample1 = c->prev_sample;
- if(version == CODEC_ID_ADPCM_MS)
- nodes[0]->step = c->idelta;
- if(version == CODEC_ID_ADPCM_YAMAHA) {
- if(c->step == 0) {
- nodes[0]->step = 127;
- nodes[0]->sample1 = 0;
- } else {
- nodes[0]->step = c->step;
- nodes[0]->sample1 = c->predictor;
- }
- }
-
- for(i=0; i<n; i++) {
- TrellisNode *t = node_buf + frontier*(i&1);
- TrellisNode **u;
- int sample = samples[i*stride];
- int heap_pos = 0;
- memset(nodes_next, 0, frontier*sizeof(TrellisNode*));
- for(j=0; j<frontier && nodes[j]; j++) {
- // higher j have higher ssd already, so they're likely to yield a suboptimal next sample too
- const int range = (j < frontier/2) ? 1 : 0;
- const int step = nodes[j]->step;
- int nidx;
- if(version == CODEC_ID_ADPCM_MS) {
- const int predictor = ((nodes[j]->sample1 * c->coeff1) + (nodes[j]->sample2 * c->coeff2)) / 64;
- const int div = (sample - predictor) / step;
- const int nmin = av_clip(div-range, -8, 6);
- const int nmax = av_clip(div+range, -7, 7);
- for(nidx=nmin; nidx<=nmax; nidx++) {
- const int nibble = nidx & 0xf;
- int dec_sample = predictor + nidx * step;
-#define STORE_NODE(NAME, STEP_INDEX)\
- int d;\
- uint32_t ssd;\
- int pos;\
- TrellisNode *u;\
- uint8_t *h;\
- dec_sample = av_clip_int16(dec_sample);\
- d = sample - dec_sample;\
- ssd = nodes[j]->ssd + d*d;\
- /* Collapse any two states with the same previous sample value. \
- * One could also distinguish states by step and by 2nd to last
- * sample, but the effects of that are negligible.
- * Since nodes in the previous generation are iterated
- * through a heap, they're roughly ordered from better to
- * worse, but not strictly ordered. Therefore, an earlier
- * node with the same sample value is better in most cases
- * (and thus the current is skipped), but not strictly
- * in all cases. Only skipping samples where ssd >=
- * ssd of the earlier node with the same sample gives
- * slightly worse quality, though, for some reason. */ \
- h = &hash[(uint16_t) dec_sample];\
- if (*h == generation)\
- goto next_##NAME;\
- if (heap_pos < frontier) {\
- pos = heap_pos++;\
- } else {\
- /* Try to replace one of the leaf nodes with the new \
- * one, but try a different slot each time. */\
- pos = (frontier >> 1) + (heap_pos & ((frontier >> 1) - 1));\
- if (ssd > nodes_next[pos]->ssd)\
- goto next_##NAME;\
- heap_pos++;\
- }\
- *h = generation;\
- u = nodes_next[pos];\
- if(!u) {\
- assert(pathn < FREEZE_INTERVAL<<avctx->trellis);\
- u = t++;\
- nodes_next[pos] = u;\
- u->path = pathn++;\
- }\
- u->ssd = ssd;\
- u->step = STEP_INDEX;\
- u->sample2 = nodes[j]->sample1;\
- u->sample1 = dec_sample;\
- paths[u->path].nibble = nibble;\
- paths[u->path].prev = nodes[j]->path;\
- /* Sift the newly inserted node up in the heap to \
- * restore the heap property. */\
- while (pos > 0) {\
- int parent = (pos - 1) >> 1;\
- if (nodes_next[parent]->ssd <= ssd)\
- break;\
- FFSWAP(TrellisNode*, nodes_next[parent], nodes_next[pos]);\
- pos = parent;\
- }\
- next_##NAME:;
- STORE_NODE(ms, FFMAX(16, (AdaptationTable[nibble] * step) >> 8));
- }
- } else if((version == CODEC_ID_ADPCM_IMA_WAV)|| (version == CODEC_ID_ADPCM_IMA_QT)|| (version == CODEC_ID_ADPCM_SWF)) {
-#define LOOP_NODES(NAME, STEP_TABLE, STEP_INDEX)\
- const int predictor = nodes[j]->sample1;\
- const int div = (sample - predictor) * 4 / STEP_TABLE;\
- int nmin = av_clip(div-range, -7, 6);\
- int nmax = av_clip(div+range, -6, 7);\
- if(nmin<=0) nmin--; /* distinguish -0 from +0 */\
- if(nmax<0) nmax--;\
- for(nidx=nmin; nidx<=nmax; nidx++) {\
- const int nibble = nidx<0 ? 7-nidx : nidx;\
- int dec_sample = predictor + (STEP_TABLE * yamaha_difflookup[nibble]) / 8;\
- STORE_NODE(NAME, STEP_INDEX);\
- }
- LOOP_NODES(ima, step_table[step], av_clip(step + index_table[nibble], 0, 88));
- } else { //CODEC_ID_ADPCM_YAMAHA
- LOOP_NODES(yamaha, step, av_clip((step * yamaha_indexscale[nibble]) >> 8, 127, 24567));
-#undef LOOP_NODES
-#undef STORE_NODE
- }
- }
-
- u = nodes;
- nodes = nodes_next;
- nodes_next = u;
-
- generation++;
- if (generation == 255) {
- memset(hash, 0xff, 65536 * sizeof(*hash));
- generation = 0;
- }
-
- // prevent overflow
- if(nodes[0]->ssd > (1<<28)) {
- for(j=1; j<frontier && nodes[j]; j++)
- nodes[j]->ssd -= nodes[0]->ssd;
- nodes[0]->ssd = 0;
- }
-
- // merge old paths to save memory
- if(i == froze + FREEZE_INTERVAL) {
- p = &paths[nodes[0]->path];
- for(k=i; k>froze; k--) {
- dst[k] = p->nibble;
- p = &paths[p->prev];
- }
- froze = i;
- pathn = 0;
- // other nodes might use paths that don't coincide with the frozen one.
- // checking which nodes do so is too slow, so just kill them all.
- // this also slightly improves quality, but I don't know why.
- memset(nodes+1, 0, (frontier-1)*sizeof(TrellisNode*));
- }
- }
-
- p = &paths[nodes[0]->path];
- for(i=n-1; i>froze; i--) {
- dst[i] = p->nibble;
- p = &paths[p->prev];
- }
-
- c->predictor = nodes[0]->sample1;
- c->sample1 = nodes[0]->sample1;
- c->sample2 = nodes[0]->sample2;
- c->step_index = nodes[0]->step;
- c->step = nodes[0]->step;
- c->idelta = nodes[0]->step;
-}
-
-static int adpcm_encode_frame(AVCodecContext *avctx,
- unsigned char *frame, int buf_size, void *data)
-{
- int n, i, st;
- short *samples;
- unsigned char *dst;
- ADPCMContext *c = avctx->priv_data;
- uint8_t *buf;
-
- dst = frame;
- samples = (short *)data;
- st= avctx->channels == 2;
-/* n = (BLKSIZE - 4 * avctx->channels) / (2 * 8 * avctx->channels); */
-
- switch(avctx->codec->id) {
- case CODEC_ID_ADPCM_IMA_WAV:
- n = avctx->frame_size / 8;
- c->status[0].prev_sample = (signed short)samples[0]; /* XXX */
-/* c->status[0].step_index = 0; *//* XXX: not sure how to init the state machine */
- bytestream_put_le16(&dst, c->status[0].prev_sample);
- *dst++ = (unsigned char)c->status[0].step_index;
- *dst++ = 0; /* unknown */
- samples++;
- if (avctx->channels == 2) {
- c->status[1].prev_sample = (signed short)samples[0];
-/* c->status[1].step_index = 0; */
- bytestream_put_le16(&dst, c->status[1].prev_sample);
- *dst++ = (unsigned char)c->status[1].step_index;
- *dst++ = 0;
- samples++;
- }
-
- /* stereo: 4 bytes (8 samples) for left, 4 bytes for right, 4 bytes left, ... */
- if(avctx->trellis > 0) {
- FF_ALLOC_OR_GOTO(avctx, buf, 2*n*8, error);
- adpcm_compress_trellis(avctx, samples, buf, &c->status[0], n*8);
- if(avctx->channels == 2)
- adpcm_compress_trellis(avctx, samples+1, buf + n*8, &c->status[1], n*8);
- for(i=0; i<n; i++) {
- *dst++ = buf[8*i+0] | (buf[8*i+1] << 4);
- *dst++ = buf[8*i+2] | (buf[8*i+3] << 4);
- *dst++ = buf[8*i+4] | (buf[8*i+5] << 4);
- *dst++ = buf[8*i+6] | (buf[8*i+7] << 4);
- if (avctx->channels == 2) {
- uint8_t *buf1 = buf + n*8;
- *dst++ = buf1[8*i+0] | (buf1[8*i+1] << 4);
- *dst++ = buf1[8*i+2] | (buf1[8*i+3] << 4);
- *dst++ = buf1[8*i+4] | (buf1[8*i+5] << 4);
- *dst++ = buf1[8*i+6] | (buf1[8*i+7] << 4);
- }
- }
- av_free(buf);
- } else
- for (; n>0; n--) {
- *dst = adpcm_ima_compress_sample(&c->status[0], samples[0]);
- *dst |= adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels]) << 4;
- dst++;
- *dst = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 2]);
- *dst |= adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 3]) << 4;
- dst++;
- *dst = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 4]);
- *dst |= adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 5]) << 4;
- dst++;
- *dst = adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 6]);
- *dst |= adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels * 7]) << 4;
- dst++;
- /* right channel */
- if (avctx->channels == 2) {
- *dst = adpcm_ima_compress_sample(&c->status[1], samples[1]);
- *dst |= adpcm_ima_compress_sample(&c->status[1], samples[3]) << 4;
- dst++;
- *dst = adpcm_ima_compress_sample(&c->status[1], samples[5]);
- *dst |= adpcm_ima_compress_sample(&c->status[1], samples[7]) << 4;
- dst++;
- *dst = adpcm_ima_compress_sample(&c->status[1], samples[9]);
- *dst |= adpcm_ima_compress_sample(&c->status[1], samples[11]) << 4;
- dst++;
- *dst = adpcm_ima_compress_sample(&c->status[1], samples[13]);
- *dst |= adpcm_ima_compress_sample(&c->status[1], samples[15]) << 4;
- dst++;
- }
- samples += 8 * avctx->channels;
- }
- break;
- case CODEC_ID_ADPCM_IMA_QT:
- {
- int ch, i;
- PutBitContext pb;
- init_put_bits(&pb, dst, buf_size*8);
-
- for(ch=0; ch<avctx->channels; ch++){
- put_bits(&pb, 9, (c->status[ch].prev_sample + 0x10000) >> 7);
- put_bits(&pb, 7, c->status[ch].step_index);
- if(avctx->trellis > 0) {
- uint8_t buf[64];
- adpcm_compress_trellis(avctx, samples+ch, buf, &c->status[ch], 64);
- for(i=0; i<64; i++)
- put_bits(&pb, 4, buf[i^1]);
- c->status[ch].prev_sample = c->status[ch].predictor & ~0x7F;
- } else {
- for (i=0; i<64; i+=2){
- int t1, t2;
- t1 = adpcm_ima_compress_sample(&c->status[ch], samples[avctx->channels*(i+0)+ch]);
- t2 = adpcm_ima_compress_sample(&c->status[ch], samples[avctx->channels*(i+1)+ch]);
- put_bits(&pb, 4, t2);
- put_bits(&pb, 4, t1);
- }
- c->status[ch].prev_sample &= ~0x7F;
- }
- }
-
- flush_put_bits(&pb);
- dst += put_bits_count(&pb)>>3;
- break;
- }
- case CODEC_ID_ADPCM_SWF:
- {
- int i;
- PutBitContext pb;
- init_put_bits(&pb, dst, buf_size*8);
-
- n = avctx->frame_size-1;
-
- //Store AdpcmCodeSize
- put_bits(&pb, 2, 2); //Set 4bits flash adpcm format
-
- //Init the encoder state
- for(i=0; i<avctx->channels; i++){
- c->status[i].step_index = av_clip(c->status[i].step_index, 0, 63); // clip step so it fits 6 bits
- put_sbits(&pb, 16, samples[i]);
- put_bits(&pb, 6, c->status[i].step_index);
- c->status[i].prev_sample = (signed short)samples[i];
- }
-
- if(avctx->trellis > 0) {
- FF_ALLOC_OR_GOTO(avctx, buf, 2*n, error);
- adpcm_compress_trellis(avctx, samples+2, buf, &c->status[0], n);
- if (avctx->channels == 2)
- adpcm_compress_trellis(avctx, samples+3, buf+n, &c->status[1], n);
- for(i=0; i<n; i++) {
- put_bits(&pb, 4, buf[i]);
- if (avctx->channels == 2)
- put_bits(&pb, 4, buf[n+i]);
- }
- av_free(buf);
- } else {
- for (i=1; i<avctx->frame_size; i++) {
- put_bits(&pb, 4, adpcm_ima_compress_sample(&c->status[0], samples[avctx->channels*i]));
- if (avctx->channels == 2)
- put_bits(&pb, 4, adpcm_ima_compress_sample(&c->status[1], samples[2*i+1]));
- }
- }
- flush_put_bits(&pb);
- dst += put_bits_count(&pb)>>3;
- break;
- }
- case CODEC_ID_ADPCM_MS:
- for(i=0; i<avctx->channels; i++){
- int predictor=0;
-
- *dst++ = predictor;
- c->status[i].coeff1 = AdaptCoeff1[predictor];
- c->status[i].coeff2 = AdaptCoeff2[predictor];
- }
- for(i=0; i<avctx->channels; i++){
- if (c->status[i].idelta < 16)
- c->status[i].idelta = 16;
-
- bytestream_put_le16(&dst, c->status[i].idelta);
- }
- for(i=0; i<avctx->channels; i++){
- c->status[i].sample2= *samples++;
- }
- for(i=0; i<avctx->channels; i++){
- c->status[i].sample1= *samples++;
-
- bytestream_put_le16(&dst, c->status[i].sample1);
- }
- for(i=0; i<avctx->channels; i++)
- bytestream_put_le16(&dst, c->status[i].sample2);
-
- if(avctx->trellis > 0) {
- int n = avctx->block_align - 7*avctx->channels;
- FF_ALLOC_OR_GOTO(avctx, buf, 2*n, error);
- if(avctx->channels == 1) {
- adpcm_compress_trellis(avctx, samples, buf, &c->status[0], n);
- for(i=0; i<n; i+=2)
- *dst++ = (buf[i] << 4) | buf[i+1];
- } else {
- adpcm_compress_trellis(avctx, samples, buf, &c->status[0], n);
- adpcm_compress_trellis(avctx, samples+1, buf+n, &c->status[1], n);
- for(i=0; i<n; i++)
- *dst++ = (buf[i] << 4) | buf[n+i];
- }
- av_free(buf);
- } else
- for(i=7*avctx->channels; i<avctx->block_align; i++) {
- int nibble;
- nibble = adpcm_ms_compress_sample(&c->status[ 0], *samples++)<<4;
- nibble|= adpcm_ms_compress_sample(&c->status[st], *samples++);
- *dst++ = nibble;
- }
- break;
- case CODEC_ID_ADPCM_YAMAHA:
- n = avctx->frame_size / 2;
- if(avctx->trellis > 0) {
- FF_ALLOC_OR_GOTO(avctx, buf, 2*n*2, error);
- n *= 2;
- if(avctx->channels == 1) {
- adpcm_compress_trellis(avctx, samples, buf, &c->status[0], n);
- for(i=0; i<n; i+=2)
- *dst++ = buf[i] | (buf[i+1] << 4);
- } else {
- adpcm_compress_trellis(avctx, samples, buf, &c->status[0], n);
- adpcm_compress_trellis(avctx, samples+1, buf+n, &c->status[1], n);
- for(i=0; i<n; i++)
- *dst++ = buf[i] | (buf[n+i] << 4);
- }
- av_free(buf);
- } else
- for (n *= avctx->channels; n>0; n--) {
- int nibble;
- nibble = adpcm_yamaha_compress_sample(&c->status[ 0], *samples++);
- nibble |= adpcm_yamaha_compress_sample(&c->status[st], *samples++) << 4;
- *dst++ = nibble;
- }
- break;
- default:
- error:
- return -1;
- }
- return dst - frame;
-}
-#endif //CONFIG_ENCODERS
+} ADPCMDecodeContext;
static av_cold int adpcm_decode_init(AVCodecContext * avctx)
{
- ADPCMContext *c = avctx->priv_data;
+ ADPCMDecodeContext *c = avctx->priv_data;
unsigned int max_channels = 2;
switch(avctx->codec->id) {
case CODEC_ID_ADPCM_EA_R1:
case CODEC_ID_ADPCM_EA_R2:
case CODEC_ID_ADPCM_EA_R3:
+ case CODEC_ID_ADPCM_EA_XAS:
max_channels = 6;
break;
}
int predictor;
int sign, delta, diff, step;
- step = step_table[c->step_index];
- step_index = c->step_index + index_table[(unsigned)nibble];
+ step = ff_adpcm_step_table[c->step_index];
+ step_index = c->step_index + ff_adpcm_index_table[(unsigned)nibble];
if (step_index < 0) step_index = 0;
else if (step_index > 88) step_index = 88;
return (short)c->predictor;
}
+static inline int adpcm_ima_qt_expand_nibble(ADPCMChannelStatus *c, int nibble, int shift)
+{
+ int step_index;
+ int predictor;
+ int diff, step;
+
+ step = ff_adpcm_step_table[c->step_index];
+ step_index = c->step_index + ff_adpcm_index_table[nibble];
+ step_index = av_clip(step_index, 0, 88);
+
+ diff = step >> 3;
+ if (nibble & 4) diff += step;
+ if (nibble & 2) diff += step >> 1;
+ if (nibble & 1) diff += step >> 2;
+
+ if (nibble & 8)
+ predictor = c->predictor - diff;
+ else
+ predictor = c->predictor + diff;
+
+ c->predictor = av_clip_int16(predictor);
+ c->step_index = step_index;
+
+ return c->predictor;
+}
+
static inline short adpcm_ms_expand_nibble(ADPCMChannelStatus *c, char nibble)
{
int predictor;
c->sample2 = c->sample1;
c->sample1 = av_clip_int16(predictor);
- c->idelta = (AdaptationTable[(int)nibble] * c->idelta) >> 8;
+ c->idelta = (ff_adpcm_AdaptationTable[(int)nibble] * c->idelta) >> 8;
if (c->idelta < 16) c->idelta = 16;
return c->sample1;
c->predictor = ((c->predictor * 254) >> 8) + (sign ? -diff : diff);
c->predictor = av_clip_int16(c->predictor);
/* calculate new step and clamp it to range 511..32767 */
- new_step = (AdaptationTable[nibble & 7] * c->step) >> 8;
+ new_step = (ff_adpcm_AdaptationTable[nibble & 7] * c->step) >> 8;
c->step = av_clip(new_step, 511, 32767);
return (short)c->predictor;
c->step = 127;
}
- c->predictor += (c->step * yamaha_difflookup[nibble]) / 8;
+ c->predictor += (c->step * ff_adpcm_yamaha_difflookup[nibble]) / 8;
c->predictor = av_clip_int16(c->predictor);
- c->step = (c->step * yamaha_indexscale[nibble]) >> 8;
+ c->step = (c->step * ff_adpcm_yamaha_indexscale[nibble]) >> 8;
c->step = av_clip(c->step, 127, 24567);
return c->predictor;
}
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
- ADPCMContext *c = avctx->priv_data;
+ ADPCMDecodeContext *c = avctx->priv_data;
ADPCMChannelStatus *cs;
int n, m, channel, i;
- int block_predictor[2];
short *samples;
short *samples_end;
const uint8_t *src;
switch(avctx->codec->id) {
case CODEC_ID_ADPCM_IMA_QT:
- n = buf_size - 2*avctx->channels;
+ /* In QuickTime, IMA is encoded by chunks of 34 bytes (=64 samples).
+ Channel data is interleaved per-chunk. */
+ if (buf_size / 34 < avctx->channels) {
+ av_log(avctx, AV_LOG_ERROR, "packet is too small\n");
+ return AVERROR(EINVAL);
+ }
for (channel = 0; channel < avctx->channels; channel++) {
+ int16_t predictor;
+ int step_index;
cs = &(c->status[channel]);
/* (pppppp) (piiiiiii) */
/* Bits 15-7 are the _top_ 9 bits of the 16-bit initial predictor value */
- cs->predictor = (*src++) << 8;
- cs->predictor |= (*src & 0x80);
- cs->predictor &= 0xFF80;
-
- /* sign extension */
- if(cs->predictor & 0x8000)
- cs->predictor -= 0x10000;
-
- cs->predictor = av_clip_int16(cs->predictor);
-
- cs->step_index = (*src++) & 0x7F;
+ predictor = AV_RB16(src);
+ step_index = predictor & 0x7F;
+ predictor &= 0xFF80;
+
+ src += 2;
+
+ if (cs->step_index == step_index) {
+ int diff = (int)predictor - cs->predictor;
+ if (diff < 0)
+ diff = - diff;
+ if (diff > 0x7f)
+ goto update;
+ } else {
+ update:
+ cs->step_index = step_index;
+ cs->predictor = predictor;
+ }
if (cs->step_index > 88){
av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i\n", cs->step_index);
cs->step_index = 88;
}
- cs->step = step_table[cs->step_index];
-
samples = (short*)data + channel;
- for(m=32; n>0 && m>0; n--, m--) { /* in QuickTime, IMA is encoded by chuncks of 34 bytes (=64 samples) */
- *samples = adpcm_ima_expand_nibble(cs, src[0] & 0x0F, 3);
+ for (m = 0; m < 32; m++) {
+ *samples = adpcm_ima_qt_expand_nibble(cs, src[0] & 0x0F, 3);
samples += avctx->channels;
- *samples = adpcm_ima_expand_nibble(cs, src[0] >> 4 , 3);
+ *samples = adpcm_ima_qt_expand_nibble(cs, src[0] >> 4 , 3);
samples += avctx->channels;
src ++;
}
}
while(src < buf + buf_size){
- for(m=0; m<4; m++){
- for(i=0; i<=st; i++)
- *samples++ = adpcm_ima_expand_nibble(&c->status[i], src[4*i] & 0x0F, 3);
- for(i=0; i<=st; i++)
- *samples++ = adpcm_ima_expand_nibble(&c->status[i], src[4*i] >> 4 , 3);
- src++;
+ for (i = 0; i < avctx->channels; i++) {
+ cs = &c->status[i];
+ for (m = 0; m < 4; m++) {
+ uint8_t v = *src++;
+ *samples = adpcm_ima_expand_nibble(cs, v & 0x0F, 3);
+ samples += avctx->channels;
+ *samples = adpcm_ima_expand_nibble(cs, v >> 4 , 3);
+ samples += avctx->channels;
+ }
+ samples -= 8 * avctx->channels - 1;
}
- src += 4*st;
+ samples += 7 * avctx->channels;
}
break;
case CODEC_ID_ADPCM_4XM:
- cs = &(c->status[0]);
- c->status[0].predictor= (int16_t)bytestream_get_le16(&src);
- if(st){
- c->status[1].predictor= (int16_t)bytestream_get_le16(&src);
- }
- c->status[0].step_index= (int16_t)bytestream_get_le16(&src);
- if(st){
- c->status[1].step_index= (int16_t)bytestream_get_le16(&src);
- }
- if (cs->step_index < 0) cs->step_index = 0;
- if (cs->step_index > 88) cs->step_index = 88;
+ for (i = 0; i < avctx->channels; i++)
+ c->status[i].predictor= (int16_t)bytestream_get_le16(&src);
- m= (buf_size - (src - buf))>>st;
- for(i=0; i<m; i++) {
- *samples++ = adpcm_ima_expand_nibble(&c->status[0], src[i] & 0x0F, 4);
- if (st)
- *samples++ = adpcm_ima_expand_nibble(&c->status[1], src[i+m] & 0x0F, 4);
- *samples++ = adpcm_ima_expand_nibble(&c->status[0], src[i] >> 4, 4);
- if (st)
- *samples++ = adpcm_ima_expand_nibble(&c->status[1], src[i+m] >> 4, 4);
+ for (i = 0; i < avctx->channels; i++) {
+ c->status[i].step_index= (int16_t)bytestream_get_le16(&src);
+ c->status[i].step_index = av_clip(c->status[i].step_index, 0, 88);
}
- src += m<<st;
+ m= (buf_size - (src - buf))>>st;
+ for (i = 0; i < avctx->channels; i++) {
+ samples = (short*)data + i;
+ cs = &c->status[i];
+ for (n = 0; n < m; n++) {
+ uint8_t v = *src++;
+ *samples = adpcm_ima_expand_nibble(cs, v & 0x0F, 4);
+ samples += avctx->channels;
+ *samples = adpcm_ima_expand_nibble(cs, v >> 4 , 4);
+ samples += avctx->channels;
+ }
+ }
+ samples -= (avctx->channels - 1);
break;
case CODEC_ID_ADPCM_MS:
+ {
+ int block_predictor;
+
if (avctx->block_align != 0 && buf_size > avctx->block_align)
buf_size = avctx->block_align;
n = buf_size - 7 * avctx->channels;
if (n < 0)
return -1;
- block_predictor[0] = av_clip(*src++, 0, 6);
- block_predictor[1] = 0;
- if (st)
- block_predictor[1] = av_clip(*src++, 0, 6);
+
+ block_predictor = av_clip(*src++, 0, 6);
+ c->status[0].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
+ c->status[0].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
+ if (st) {
+ block_predictor = av_clip(*src++, 0, 6);
+ c->status[1].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
+ c->status[1].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
+ }
c->status[0].idelta = (int16_t)bytestream_get_le16(&src);
if (st){
c->status[1].idelta = (int16_t)bytestream_get_le16(&src);
}
- c->status[0].coeff1 = AdaptCoeff1[block_predictor[0]];
- c->status[0].coeff2 = AdaptCoeff2[block_predictor[0]];
- c->status[1].coeff1 = AdaptCoeff1[block_predictor[1]];
- c->status[1].coeff2 = AdaptCoeff2[block_predictor[1]];
c->status[0].sample1 = bytestream_get_le16(&src);
if (st) c->status[1].sample1 = bytestream_get_le16(&src);
src ++;
}
break;
+ }
case CODEC_ID_ADPCM_IMA_DK4:
if (avctx->block_align != 0 && buf_size > avctx->block_align)
buf_size = avctx->block_align;
- c->status[0].predictor = (int16_t)bytestream_get_le16(&src);
- c->status[0].step_index = *src++;
- src++;
- *samples++ = c->status[0].predictor;
- if (st) {
- c->status[1].predictor = (int16_t)bytestream_get_le16(&src);
- c->status[1].step_index = *src++;
- src++;
- *samples++ = c->status[1].predictor;
+ n = buf_size - 4 * avctx->channels;
+ if (n < 0) {
+ av_log(avctx, AV_LOG_ERROR, "packet is too small\n");
+ return AVERROR(EINVAL);
}
- while (src < buf + buf_size) {
-
- /* take care of the top nibble (always left or mono channel) */
- *samples++ = adpcm_ima_expand_nibble(&c->status[0],
- src[0] >> 4, 3);
-
- /* take care of the bottom nibble, which is right sample for
- * stereo, or another mono sample */
- if (st)
- *samples++ = adpcm_ima_expand_nibble(&c->status[1],
- src[0] & 0x0F, 3);
- else
- *samples++ = adpcm_ima_expand_nibble(&c->status[0],
- src[0] & 0x0F, 3);
+ for (channel = 0; channel < avctx->channels; channel++) {
+ cs = &c->status[channel];
+ cs->predictor = (int16_t)bytestream_get_le16(&src);
+ cs->step_index = *src++;
src++;
+ *samples++ = cs->predictor;
+ }
+ while (n-- > 0) {
+ uint8_t v = *src++;
+ *samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v >> 4 , 3);
+ *samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
}
break;
case CODEC_ID_ADPCM_IMA_DK3:
}
break;
case CODEC_ID_ADPCM_IMA_ISS:
- c->status[0].predictor = (int16_t)AV_RL16(src + 0);
- c->status[0].step_index = src[2];
- src += 4;
- if(st) {
- c->status[1].predictor = (int16_t)AV_RL16(src + 0);
- c->status[1].step_index = src[2];
- src += 4;
+ n = buf_size - 4 * avctx->channels;
+ if (n < 0) {
+ av_log(avctx, AV_LOG_ERROR, "packet is too small\n");
+ return AVERROR(EINVAL);
}
- while (src < buf + buf_size) {
+ for (channel = 0; channel < avctx->channels; channel++) {
+ cs = &c->status[channel];
+ cs->predictor = (int16_t)bytestream_get_le16(&src);
+ cs->step_index = *src++;
+ src++;
+ }
+ while (n-- > 0) {
+ uint8_t v1, v2;
+ uint8_t v = *src++;
+ /* nibbles are swapped for mono */
if (st) {
- *samples++ = adpcm_ima_expand_nibble(&c->status[0],
- src[0] >> 4 , 3);
- *samples++ = adpcm_ima_expand_nibble(&c->status[1],
- src[0] & 0x0F, 3);
+ v1 = v >> 4;
+ v2 = v & 0x0F;
} else {
- *samples++ = adpcm_ima_expand_nibble(&c->status[0],
- src[0] & 0x0F, 3);
- *samples++ = adpcm_ima_expand_nibble(&c->status[0],
- src[0] >> 4 , 3);
+ v2 = v >> 4;
+ v1 = v & 0x0F;
}
-
- src++;
+ *samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v1, 3);
+ *samples++ = adpcm_ima_expand_nibble(&c->status[st], v2, 3);
}
break;
case CODEC_ID_ADPCM_IMA_WS:
- /* no per-block initialization; just start decoding the data */
while (src < buf + buf_size) {
-
- if (st) {
- *samples++ = adpcm_ima_expand_nibble(&c->status[0],
- src[0] >> 4 , 3);
- *samples++ = adpcm_ima_expand_nibble(&c->status[1],
- src[0] & 0x0F, 3);
- } else {
- *samples++ = adpcm_ima_expand_nibble(&c->status[0],
- src[0] >> 4 , 3);
- *samples++ = adpcm_ima_expand_nibble(&c->status[0],
- src[0] & 0x0F, 3);
- }
-
- src++;
+ uint8_t v = *src++;
+ *samples++ = adpcm_ima_expand_nibble(&c->status[0], v >> 4 , 3);
+ *samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
}
break;
case CODEC_ID_ADPCM_XA:
}
break;
case CODEC_ID_ADPCM_EA:
- if (buf_size < 4 || AV_RL32(src) >= ((buf_size - 12) * 2)) {
- src += buf_size;
- break;
+ /* Each EA ADPCM frame has a 12-byte header followed by 30-byte pieces,
+ each coding 28 stereo samples. */
+ if (buf_size < 12) {
+ av_log(avctx, AV_LOG_ERROR, "frame too small\n");
+ return AVERROR(EINVAL);
}
samples_in_chunk = AV_RL32(src);
+ if (samples_in_chunk / 28 > (buf_size - 12) / 30) {
+ av_log(avctx, AV_LOG_ERROR, "invalid frame\n");
+ return AVERROR(EINVAL);
+ }
src += 4;
current_left_sample = (int16_t)bytestream_get_le16(&src);
previous_left_sample = (int16_t)bytestream_get_le16(&src);
break;
case CODEC_ID_ADPCM_CT:
while (src < buf + buf_size) {
- if (st) {
- *samples++ = adpcm_ct_expand_nibble(&c->status[0],
- src[0] >> 4);
- *samples++ = adpcm_ct_expand_nibble(&c->status[1],
- src[0] & 0x0F);
- } else {
- *samples++ = adpcm_ct_expand_nibble(&c->status[0],
- src[0] >> 4);
- *samples++ = adpcm_ct_expand_nibble(&c->status[0],
- src[0] & 0x0F);
- }
- src++;
+ uint8_t v = *src++;
+ *samples++ = adpcm_ct_expand_nibble(&c->status[0 ], v >> 4 );
+ *samples++ = adpcm_ct_expand_nibble(&c->status[st], v & 0x0F);
}
break;
case CODEC_ID_ADPCM_SBPRO_4:
for (i = 0; i < avctx->channels; i++) {
// similar to IMA adpcm
int delta = get_bits(&gb, nb_bits);
- int step = step_table[c->status[i].step_index];
+ int step = ff_adpcm_step_table[c->status[i].step_index];
long vpdiff = 0; // vpdiff = (delta+0.5)*step/4
int k = k0;
}
case CODEC_ID_ADPCM_YAMAHA:
while (src < buf + buf_size) {
- if (st) {
- *samples++ = adpcm_yamaha_expand_nibble(&c->status[0],
- src[0] & 0x0F);
- *samples++ = adpcm_yamaha_expand_nibble(&c->status[1],
- src[0] >> 4 );
- } else {
- *samples++ = adpcm_yamaha_expand_nibble(&c->status[0],
- src[0] & 0x0F);
- *samples++ = adpcm_yamaha_expand_nibble(&c->status[0],
- src[0] >> 4 );
- }
- src++;
+ uint8_t v = *src++;
+ *samples++ = adpcm_yamaha_expand_nibble(&c->status[0 ], v & 0x0F);
+ *samples++ = adpcm_yamaha_expand_nibble(&c->status[st], v >> 4 );
}
break;
case CODEC_ID_ADPCM_THP:
}
-
-#if CONFIG_ENCODERS
-#define ADPCM_ENCODER(id,name,long_name_) \
-AVCodec name ## _encoder = { \
- #name, \
- AVMEDIA_TYPE_AUDIO, \
- id, \
- sizeof(ADPCMContext), \
- adpcm_encode_init, \
- adpcm_encode_frame, \
- adpcm_encode_close, \
- NULL, \
- .sample_fmts = (const enum AVSampleFormat[]){AV_SAMPLE_FMT_S16,AV_SAMPLE_FMT_NONE}, \
- .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
-};
-#else
-#define ADPCM_ENCODER(id,name,long_name_)
-#endif
-
-#if CONFIG_DECODERS
-#define ADPCM_DECODER(id,name,long_name_) \
-AVCodec name ## _decoder = { \
- #name, \
- AVMEDIA_TYPE_AUDIO, \
- id, \
- sizeof(ADPCMContext), \
- adpcm_decode_init, \
- NULL, \
- NULL, \
- adpcm_decode_frame, \
- .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
-};
-#else
-#define ADPCM_DECODER(id,name,long_name_)
-#endif
-
-#define ADPCM_CODEC(id,name,long_name_) \
- ADPCM_ENCODER(id,name,long_name_) ADPCM_DECODER(id,name,long_name_)
+#define ADPCM_DECODER(id_, name_, long_name_) \
+AVCodec ff_ ## name_ ## _decoder = { \
+ .name = #name_, \
+ .type = AVMEDIA_TYPE_AUDIO, \
+ .id = id_, \
+ .priv_data_size = sizeof(ADPCMDecodeContext), \
+ .init = adpcm_decode_init, \
+ .decode = adpcm_decode_frame, \
+ .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
+}
/* Note: Do not forget to add new entries to the Makefile as well. */
ADPCM_DECODER(CODEC_ID_ADPCM_4XM, adpcm_4xm, "ADPCM 4X Movie");
ADPCM_DECODER(CODEC_ID_ADPCM_IMA_EA_EACS, adpcm_ima_ea_eacs, "ADPCM IMA Electronic Arts EACS");
ADPCM_DECODER(CODEC_ID_ADPCM_IMA_EA_SEAD, adpcm_ima_ea_sead, "ADPCM IMA Electronic Arts SEAD");
ADPCM_DECODER(CODEC_ID_ADPCM_IMA_ISS, adpcm_ima_iss, "ADPCM IMA Funcom ISS");
-ADPCM_CODEC (CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt, "ADPCM IMA QuickTime");
+ADPCM_DECODER(CODEC_ID_ADPCM_IMA_QT, adpcm_ima_qt, "ADPCM IMA QuickTime");
ADPCM_DECODER(CODEC_ID_ADPCM_IMA_SMJPEG, adpcm_ima_smjpeg, "ADPCM IMA Loki SDL MJPEG");
-ADPCM_CODEC (CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav, "ADPCM IMA WAV");
+ADPCM_DECODER(CODEC_ID_ADPCM_IMA_WAV, adpcm_ima_wav, "ADPCM IMA WAV");
ADPCM_DECODER(CODEC_ID_ADPCM_IMA_WS, adpcm_ima_ws, "ADPCM IMA Westwood");
-ADPCM_CODEC (CODEC_ID_ADPCM_MS, adpcm_ms, "ADPCM Microsoft");
+ADPCM_DECODER(CODEC_ID_ADPCM_MS, adpcm_ms, "ADPCM Microsoft");
ADPCM_DECODER(CODEC_ID_ADPCM_SBPRO_2, adpcm_sbpro_2, "ADPCM Sound Blaster Pro 2-bit");
ADPCM_DECODER(CODEC_ID_ADPCM_SBPRO_3, adpcm_sbpro_3, "ADPCM Sound Blaster Pro 2.6-bit");
ADPCM_DECODER(CODEC_ID_ADPCM_SBPRO_4, adpcm_sbpro_4, "ADPCM Sound Blaster Pro 4-bit");
-ADPCM_CODEC (CODEC_ID_ADPCM_SWF, adpcm_swf, "ADPCM Shockwave Flash");
+ADPCM_DECODER(CODEC_ID_ADPCM_SWF, adpcm_swf, "ADPCM Shockwave Flash");
ADPCM_DECODER(CODEC_ID_ADPCM_THP, adpcm_thp, "ADPCM Nintendo Gamecube THP");
ADPCM_DECODER(CODEC_ID_ADPCM_XA, adpcm_xa, "ADPCM CDROM XA");
-ADPCM_CODEC (CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha, "ADPCM Yamaha");
+ADPCM_DECODER(CODEC_ID_ADPCM_YAMAHA, adpcm_yamaha, "ADPCM Yamaha");
projects / ffmpeg / blobdiff