768, 614, 512, 409, 307, 230, 230, 230
};
-static const int AdaptCoeff1[] = {
- 256, 512, 0, 192, 240, 460, 392
+static const uint8_t AdaptCoeff1[] = {
+ 64, 128, 0, 48, 60, 115, 98
};
-static const int AdaptCoeff2[] = {
- 0, -256, 0, 64, 0, -208, -232
+static const int8_t AdaptCoeff2[] = {
+ 0, -64, 0, 16, 0, -52, -58
};
/* These are for CD-ROM XA ADPCM */
{
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;
+ }
+
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 */
{
int predictor, nibble, bias;
- predictor = (((c->sample1) * (c->coeff1)) + ((c->sample2) * (c->coeff2))) / 256;
+ predictor = (((c->sample1) * (c->coeff1)) + ((c->sample2) * (c->coeff2))) / 64;
nibble= sample - predictor;
if(nibble>=0) bias= c->idelta/2;
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)) / 256;
+ 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);
//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_bits(&pb, 16, samples[i] & 0xFFFF);
+ put_sbits(&pb, 16, samples[i]);
put_bits(&pb, 6, c->status[i].step_index);
c->status[i].prev_sample = (signed short)samples[i];
}
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++){
- c->status[i].sample2= *samples++;
-
+ 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;
default:
break;
}
+ avctx->sample_fmt = SAMPLE_FMT_S16;
return 0;
}
{
int predictor;
- predictor = (((c->sample1) * (c->coeff1)) + ((c->sample2) * (c->coeff2))) / 256;
+ predictor = (((c->sample1) * (c->coeff1)) + ((c->sample2) * (c->coeff2))) / 64;
predictor += (signed)((nibble & 0x08)?(nibble - 0x10):(nibble)) * c->idelta;
c->sample2 = c->sample1;
for(i=0; i<avctx->channels; i++){
cs = &(c->status[i]);
- cs->predictor = *samples++ = (int16_t)(src[0] + (src[1]<<8));
- src+=2;
+ cs->predictor = *samples++ = (int16_t)bytestream_get_le16(&src);
cs->step_index = *src++;
if (cs->step_index > 88){
break;
case CODEC_ID_ADPCM_4XM:
cs = &(c->status[0]);
- c->status[0].predictor= (int16_t)(src[0] + (src[1]<<8)); src+=2;
+ c->status[0].predictor= (int16_t)bytestream_get_le16(&src);
if(st){
- c->status[1].predictor= (int16_t)(src[0] + (src[1]<<8)); src+=2;
+ c->status[1].predictor= (int16_t)bytestream_get_le16(&src);
}
- c->status[0].step_index= (int16_t)(src[0] + (src[1]<<8)); src+=2;
+ c->status[0].step_index= (int16_t)bytestream_get_le16(&src);
if(st){
- c->status[1].step_index= (int16_t)(src[0] + (src[1]<<8)); src+=2;
+ 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;
n = buf_size - 7 * avctx->channels;
if (n < 0)
return -1;
- block_predictor[0] = av_clip(*src++, 0, 7);
+ block_predictor[0] = av_clip(*src++, 0, 6);
block_predictor[1] = 0;
if (st)
- block_predictor[1] = av_clip(*src++, 0, 7);
- c->status[0].idelta = (int16_t)((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
- src+=2;
+ block_predictor[1] = av_clip(*src++, 0, 6);
+ c->status[0].idelta = (int16_t)bytestream_get_le16(&src);
if (st){
- c->status[1].idelta = (int16_t)((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
- src+=2;
+ 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 = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
- src+=2;
- if (st) c->status[1].sample1 = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
- if (st) src+=2;
- c->status[0].sample2 = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
- src+=2;
- if (st) c->status[1].sample2 = ((*src & 0xFF) | ((src[1] << 8) & 0xFF00));
- if (st) src+=2;
+ c->status[0].sample1 = bytestream_get_le16(&src);
+ if (st) c->status[1].sample1 = bytestream_get_le16(&src);
+ c->status[0].sample2 = bytestream_get_le16(&src);
+ if (st) c->status[1].sample2 = bytestream_get_le16(&src);
- *samples++ = c->status[0].sample1;
- if (st) *samples++ = c->status[1].sample1;
*samples++ = c->status[0].sample2;
if (st) *samples++ = c->status[1].sample2;
+ *samples++ = c->status[0].sample1;
+ if (st) *samples++ = c->status[1].sample1;
for(;n>0;n--) {
*samples++ = adpcm_ms_expand_nibble(&c->status[0 ], src[0] >> 4 );
*samples++ = adpcm_ms_expand_nibble(&c->status[st], src[0] & 0x0F);
if (avctx->block_align != 0 && buf_size > avctx->block_align)
buf_size = avctx->block_align;
- c->status[0].predictor = (int16_t)(src[0] | (src[1] << 8));
- c->status[0].step_index = src[2];
- src += 4;
+ 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)(src[0] | (src[1] << 8));
- c->status[1].step_index = src[2];
- src += 4;
+ c->status[1].predictor = (int16_t)bytestream_get_le16(&src);
+ c->status[1].step_index = *src++;
+ src++;
*samples++ = c->status[1].predictor;
}
while (src < buf + buf_size) {
if(buf_size + 16 > (samples_end - samples)*3/8)
return -1;
- c->status[0].predictor = (int16_t)(src[10] | (src[11] << 8));
- c->status[1].predictor = (int16_t)(src[12] | (src[13] << 8));
+ c->status[0].predictor = (int16_t)AV_RL16(src + 10);
+ c->status[1].predictor = (int16_t)AV_RL16(src + 12);
c->status[0].step_index = src[14];
c->status[1].step_index = src[15];
/* sign extend the predictors */
break;
}
src += 4;
- current_left_sample = (int16_t)AV_RL16(src);
- src += 2;
- previous_left_sample = (int16_t)AV_RL16(src);
- src += 2;
- current_right_sample = (int16_t)AV_RL16(src);
- src += 2;
- previous_right_sample = (int16_t)AV_RL16(src);
- src += 2;
+ current_left_sample = (int16_t)bytestream_get_le16(&src);
+ previous_left_sample = (int16_t)bytestream_get_le16(&src);
+ current_right_sample = (int16_t)bytestream_get_le16(&src);
+ previous_right_sample = (int16_t)bytestream_get_le16(&src);
for (count1 = 0; count1 < samples_in_chunk/28;count1++) {
coeff1l = ea_adpcm_table[ *src >> 4 ];
adpcm_encode_frame, \
adpcm_encode_close, \
NULL, \
- .long_name = long_name_, \
+ .sample_fmts = (enum SampleFormat[]){SAMPLE_FMT_S16,SAMPLE_FMT_NONE}, \
+ .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
};
#else
#define ADPCM_ENCODER(id,name,long_name_)
NULL, \
NULL, \
adpcm_decode_frame, \
- .long_name = long_name_, \
+ .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
};
#else
#define ADPCM_DECODER(id,name,long_name_)
#define ADPCM_CODEC(id,name,long_name_) \
ADPCM_ENCODER(id,name,long_name_) ADPCM_DECODER(id,name,long_name_)
+/* Note: Do not forget to add new entries to the Makefile as well. */
ADPCM_DECODER(CODEC_ID_ADPCM_4XM, adpcm_4xm, "4X Movie ADPCM");
ADPCM_DECODER(CODEC_ID_ADPCM_CT, adpcm_ct, "Creative Technology ADPCM");
ADPCM_DECODER(CODEC_ID_ADPCM_EA, adpcm_ea, "Electronic Arts ADPCM");