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Support cook multichannel files.

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Originally committed as revision 18685 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Benjamin Larsson 2009-04-25 10:46:07 +00:00
parent 7204850ea9
commit 67da31826f
1 changed files with 31 additions and 3 deletions
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34
libavcodec/cook.c
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@ -1008,6 +1008,13 @@ static int cook_decode_frame(AVCodecContext *avctx,
/* estimate subpacket sizes */
q->subpacket[0].size = avctx->block_align;
if(q->num_subpackets > 1){
for(i=1;i<q->num_subpackets;i++){
q->subpacket[i].size = 2 * buf[avctx->block_align - q->num_subpackets + i];
q->subpacket[0].size -= (q->subpacket[i].size + 1);
}
}
/* decode supbackets */
*data_size = 0;
for(i=0;i<q->num_subpackets;i++){
@ -1076,6 +1083,7 @@ static av_cold int cook_decode_init(AVCodecContext *avctx)
const uint8_t *edata_ptr_end = edata_ptr + avctx->extradata_size;
int extradata_size = avctx->extradata_size;
int s = 0;
unsigned int channel_mask = 0;
q->avctx = avctx;
/* Take care of the codec specific extradata. */
@ -1155,8 +1163,25 @@ static av_cold int cook_decode_init(AVCodecContext *avctx)
}
break;
case MC_COOK:
av_log(avctx,AV_LOG_ERROR,"MC_COOK not supported!\n");
return -1;
av_log(avctx,AV_LOG_DEBUG,"MULTI_CHANNEL\n");
if(extradata_size >= 4)
channel_mask |= q->subpacket[s].channel_mask = bytestream_get_be32(&edata_ptr);
if(cook_count_channels(q->subpacket[s].channel_mask) > 1){
q->subpacket[s].total_subbands = q->subpacket[s].subbands + q->subpacket[s].js_subband_start;
q->subpacket[s].joint_stereo = 1;
q->subpacket[s].num_channels = 2;
q->subpacket[s].samples_per_channel = q->subpacket[s].samples_per_frame >> 1;
if (q->subpacket[s].samples_per_channel > 256) {
q->subpacket[s].log2_numvector_size = 6;
}
if (q->subpacket[s].samples_per_channel > 512) {
q->subpacket[s].log2_numvector_size = 7;
}
}else
q->subpacket[s].samples_per_channel = q->subpacket[s].samples_per_frame;
break;
default:
av_log(avctx,AV_LOG_ERROR,"Unknown Cook version, report sample!\n");
@ -1240,7 +1265,10 @@ static av_cold int cook_decode_init(AVCodecContext *avctx)
}
avctx->sample_fmt = SAMPLE_FMT_S16;
avctx->channel_layout = (avctx->channels==2) ? CH_LAYOUT_STEREO : CH_LAYOUT_MONO;
if (channel_mask)
avctx->channel_layout = channel_mask;
else
avctx->channel_layout = (avctx->channels==2) ? CH_LAYOUT_STEREO : CH_LAYOUT_MONO;
#ifdef COOKDEBUG
dump_cook_context(q);