#include "bytestream.h"
#include "adpcm.h"
#include "adpcm_data.h"
+#include "internal.h"
/**
* @file
case AV_CODEC_ID_ADPCM_EA:
min_channels = 2;
break;
+ case AV_CODEC_ID_ADPCM_AFC:
case AV_CODEC_ID_ADPCM_EA_R1:
case AV_CODEC_ID_ADPCM_EA_R2:
case AV_CODEC_ID_ADPCM_EA_R3:
case AV_CODEC_ID_ADPCM_EA_XAS:
+ case AV_CODEC_ID_ADPCM_THP:
max_channels = 6;
break;
}
bytestream2_skip(gb, 4); // channel size
*coded_samples = bytestream2_get_be32(gb);
*coded_samples -= *coded_samples % 14;
- nb_samples = (buf_size - 80) / (8 * ch) * 14;
+ nb_samples = (buf_size - (8 + 36 * ch)) / (8 * ch) * 14;
break;
case AV_CODEC_ID_ADPCM_AFC:
nb_samples = buf_size / (9 * ch) * 16;
/* get output buffer */
c->frame.nb_samples = nb_samples;
- if ((ret = avctx->get_buffer(avctx, &c->frame)) < 0) {
+ if ((ret = ff_get_buffer(avctx, &c->frame)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
return AVERROR_INVALIDDATA;
}
}
- for (n = nb_samples >> (1 - st); n > 0; n--) {
+ for (n = (nb_samples - 1) >> (1 - st); n > 0; n--) {
int v = bytestream2_get_byteu(&gb);
*samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v >> 4 , 3);
*samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
}
break;
case AV_CODEC_ID_ADPCM_AFC:
+ {
+ int samples_per_block;
+ int blocks;
+
+ if (avctx->extradata && avctx->extradata_size == 1 && avctx->extradata[0]) {
+ samples_per_block = avctx->extradata[0] / 16;
+ blocks = nb_samples / avctx->extradata[0];
+ } else {
+ samples_per_block = nb_samples / 16;
+ blocks = 1;
+ }
+
+ for (m = 0; m < blocks; m++) {
for (channel = 0; channel < avctx->channels; channel++) {
int prev1 = c->status[channel].sample1;
int prev2 = c->status[channel].sample2;
- samples = samples_p[channel];
+ samples = samples_p[channel] + m * 16;
/* Read in every sample for this channel. */
- for (i = 0; i < nb_samples / 16; i++) {
+ for (i = 0; i < samples_per_block; i++) {
int byte = bytestream2_get_byteu(&gb);
int scale = 1 << (byte >> 4);
int index = byte & 0xf;
c->status[channel].sample1 = prev1;
c->status[channel].sample2 = prev2;
}
+ }
bytestream2_seek(&gb, 0, SEEK_END);
break;
+ }
case AV_CODEC_ID_ADPCM_THP:
{
- int table[2][16];
- int prev[2][2];
+ int table[6][16];
int ch;
- for (i = 0; i < 2; i++)
+ for (i = 0; i < avctx->channels; i++)
for (n = 0; n < 16; n++)
table[i][n] = sign_extend(bytestream2_get_be16u(&gb), 16);
/* Initialize the previous sample. */
- for (i = 0; i < 2; i++)
- for (n = 0; n < 2; n++)
- prev[i][n] = sign_extend(bytestream2_get_be16u(&gb), 16);
+ for (i = 0; i < avctx->channels; i++) {
+ c->status[i].sample1 = sign_extend(bytestream2_get_be16u(&gb), 16);
+ c->status[i].sample2 = sign_extend(bytestream2_get_be16u(&gb), 16);
+ }
- for (ch = 0; ch <= st; ch++) {
+ for (ch = 0; ch < avctx->channels; ch++) {
samples = samples_p[ch];
/* Read in every sample for this channel. */
sampledat = sign_extend(byte >> 4, 4);
}
- sampledat = ((prev[ch][0]*factor1
- + prev[ch][1]*factor2) >> 11) + (sampledat << exp);
+ sampledat = ((c->status[ch].sample1 * factor1
+ + c->status[ch].sample2 * factor2) >> 11) + (sampledat << exp);
*samples = av_clip_int16(sampledat);
- prev[ch][1] = prev[ch][0];
- prev[ch][0] = *samples++;
+ c->status[ch].sample2 = c->status[ch].sample1;
+ c->status[ch].sample1 = *samples++;
}
}
}