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use mpeg4audio common code 

Originally committed as revision 12988 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2008-04-26 13:56:52 +00:00
parent 86c90cc7a6
commit b61d2782f3
1 changed files with 9 additions and 5 deletions
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14
libavcodec/mpegaudiodec.c
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@ -2475,9 +2475,11 @@ static int decode_frame_adu(AVCodecContext * avctx,
#endif /* CONFIG_MP3ADU_DECODER */
#ifdef CONFIG_MP3ON4_DECODER
#include "mpeg4audio.h"
/* Next 3 arrays are indexed by channel config number (passed via codecdata) */
static const uint8_t mp3Frames[16] = {0,1,1,2,3,3,4,5,2}; /* number of mp3 decoder instances */
static const uint8_t mp3Channels[16] = {0,1,2,3,4,5,6,8,4}; /* total output channels */
/* offsets into output buffer, assume output order is FL FR BL BR C LFE */
static const uint8_t chan_offset[9][5] = {
{0},
@ -2495,6 +2497,7 @@ static const uint8_t chan_offset[9][5] = {
static int decode_init_mp3on4(AVCodecContext * avctx)
{
MP3On4DecodeContext *s = avctx->priv_data;
MPEG4AudioConfig cfg;
int i;
if ((avctx->extradata_size < 2) || (avctx->extradata == NULL)) {
@ -2502,13 +2505,14 @@ static int decode_init_mp3on4(AVCodecContext * avctx)
return -1;
}
s->chan_cfg = (((unsigned char *)avctx->extradata)[1] >> 3) & 0x0f;
s->frames = mp3Frames[s->chan_cfg];
if(!s->frames) {
ff_mpeg4audio_get_config(&cfg, avctx->extradata, avctx->extradata_size);
if (!cfg.chan_config || cfg.chan_config > 7) {
av_log(avctx, AV_LOG_ERROR, "Invalid channel config number.\n");
return -1;
}
avctx->channels = mp3Channels[s->chan_cfg];
s->chan_cfg = cfg.chan_config;
s->frames = mp3Frames[s->chan_cfg];
avctx->channels = ff_mpeg4audio_channels[s->chan_cfg];
/* Init the first mp3 decoder in standard way, so that all tables get builded
* We replace avctx->priv_data with the context of the first decoder so that