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Factorize ff_h264_decode_extradata().

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Patch by Howard Chu, hyc highlandsun com

Originally committed as revision 23340 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Howard Chu 2010-05-26 19:00:59 +00:00 committed by Carl Eugen Hoyos
parent 35f7c39a5d
commit 05e953193d
2 changed files with 47 additions and 35 deletions
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81
libavcodec/h264.c
View File

@ -844,41 +844,11 @@ static av_cold void common_init(H264Context *h){
memset(h->pps.scaling_matrix8, 16, 2*64*sizeof(uint8_t));
}
av_cold int ff_h264_decode_init(AVCodecContext *avctx){
H264Context *h= avctx->priv_data;
MpegEncContext * const s = &h->s;
int ff_h264_decode_extradata(H264Context *h)
{
AVCodecContext *avctx = h->s.avctx;
MPV_decode_defaults(s);
s->avctx = avctx;
common_init(h);
s->out_format = FMT_H264;
s->workaround_bugs= avctx->workaround_bugs;
// set defaults
// s->decode_mb= ff_h263_decode_mb;
s->quarter_sample = 1;
if(!avctx->has_b_frames)
s->low_delay= 1;
avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
ff_h264_decode_init_vlc();
h->thread_context[0] = h;
h->outputed_poc = INT_MIN;
h->prev_poc_msb= 1<<16;
h->x264_build = -1;
ff_h264_reset_sei(h);
if(avctx->codec_id == CODEC_ID_H264){
if(avctx->ticks_per_frame == 1){
s->avctx->time_base.den *=2;
}
avctx->ticks_per_frame = 2;
}
if(avctx->extradata_size > 0 && avctx->extradata && *(char *)avctx->extradata == 1){
if(*(char *)avctx->extradata == 1){
int i, cnt, nalsize;
unsigned char *p = avctx->extradata;
@ -916,9 +886,50 @@ av_cold int ff_h264_decode_init(AVCodecContext *avctx){
h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1;
} else {
h->is_avc = 0;
if(decode_nal_units(h, s->avctx->extradata, s->avctx->extradata_size) < 0)
if(decode_nal_units(h, avctx->extradata, avctx->extradata_size) < 0)
return -1;
}
return 0;
}
av_cold int ff_h264_decode_init(AVCodecContext *avctx){
H264Context *h= avctx->priv_data;
MpegEncContext * const s = &h->s;
MPV_decode_defaults(s);
s->avctx = avctx;
common_init(h);
s->out_format = FMT_H264;
s->workaround_bugs= avctx->workaround_bugs;
// set defaults
// s->decode_mb= ff_h263_decode_mb;
s->quarter_sample = 1;
if(!avctx->has_b_frames)
s->low_delay= 1;
avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
ff_h264_decode_init_vlc();
h->thread_context[0] = h;
h->outputed_poc = INT_MIN;
h->prev_poc_msb= 1<<16;
h->x264_build = -1;
ff_h264_reset_sei(h);
if(avctx->codec_id == CODEC_ID_H264){
if(avctx->ticks_per_frame == 1){
s->avctx->time_base.den *=2;
}
avctx->ticks_per_frame = 2;
}
if(avctx->extradata_size > 0 && avctx->extradata &&
ff_h264_decode_extradata(h))
return -1;
if(h->sps.bitstream_restriction_flag && s->avctx->has_b_frames < h->sps.num_reorder_frames){
s->avctx->has_b_frames = h->sps.num_reorder_frames;
s->low_delay = 0;

1
libavcodec/h264.h
View File

@ -679,6 +679,7 @@ int ff_h264_check_intra_pred_mode(H264Context *h, int mode);
void ff_h264_write_back_intra_pred_mode(H264Context *h);
void ff_h264_hl_decode_mb(H264Context *h);
int ff_h264_frame_start(H264Context *h);
int ff_h264_decode_extradata(H264Context *h);
av_cold int ff_h264_decode_init(AVCodecContext *avctx);
av_cold int ff_h264_decode_end(AVCodecContext *avctx);
av_cold void ff_h264_decode_init_vlc(void);