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move stream header writing into its own function 

Originally committed as revision 10014 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2007-08-09 12:25:58 +00:00
parent 97d5eb11db
commit 0809b51e52
1 changed files with 43 additions and 38 deletions
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81
libavformat/nutenc.c
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@ -281,6 +281,48 @@ static void write_mainheader(NUTContext *nut, ByteIOContext *bc){
}
}
static int write_streamheader(NUTContext *nut, ByteIOContext *bc, AVCodecContext *codec, int i){
put_v(bc, i);
switch(codec->codec_type){
case CODEC_TYPE_VIDEO: put_v(bc, 0); break;
case CODEC_TYPE_AUDIO: put_v(bc, 1); break;
// case CODEC_TYPE_TEXT : put_v(bc, 2); break;
default : put_v(bc, 3); break;
}
put_v(bc, 4);
if (codec->codec_tag){
put_le32(bc, codec->codec_tag);
}else
return -1;
put_v(bc, (nut->stream[i].time_base - nut->time_base)/sizeof(AVRational));
put_v(bc, nut->stream[i].msb_pts_shift);
put_v(bc, nut->stream[i].max_pts_distance);
put_v(bc, codec->has_b_frames);
put_byte(bc, 0); /* flags: 0x1 - fixed_fps, 0x2 - index_present */
put_v(bc, codec->extradata_size);
put_buffer(bc, codec->extradata, codec->extradata_size);
switch(codec->codec_type){
case CODEC_TYPE_AUDIO:
put_v(bc, codec->sample_rate);
put_v(bc, 1);
put_v(bc, codec->channels);
break;
case CODEC_TYPE_VIDEO:
put_v(bc, codec->width);
put_v(bc, codec->height);
put_v(bc, codec->sample_aspect_ratio.num);
put_v(bc, codec->sample_aspect_ratio.den);
put_v(bc, 0); /* csp type -- unknown */
break;
default:
break;
}
return 0;
}
static int write_header(AVFormatContext *s){
NUTContext *nut = s->priv_data;
ByteIOContext *bc = &s->pb;
@ -334,44 +376,7 @@ static int write_header(AVFormatContext *s){
put_be64(bc, STREAM_STARTCODE);
put_packetheader(nut, bc, 120/*FIXME check*/ + codec->extradata_size, 1);
put_v(bc, i);
switch(codec->codec_type){
case CODEC_TYPE_VIDEO: put_v(bc, 0); break;
case CODEC_TYPE_AUDIO: put_v(bc, 1); break;
// case CODEC_TYPE_TEXT : put_v(bc, 2); break;
default : put_v(bc, 3); break;
}
put_v(bc, 4);
if (codec->codec_tag){
put_le32(bc, codec->codec_tag);
}else
return -1;
put_v(bc, (nut->stream[i].time_base - nut->time_base)/sizeof(AVRational));
put_v(bc, nut->stream[i].msb_pts_shift);
put_v(bc, nut->stream[i].max_pts_distance);
put_v(bc, codec->has_b_frames);
put_byte(bc, 0); /* flags: 0x1 - fixed_fps, 0x2 - index_present */
put_v(bc, codec->extradata_size);
put_buffer(bc, codec->extradata, codec->extradata_size);
switch(codec->codec_type){
case CODEC_TYPE_AUDIO:
put_v(bc, codec->sample_rate);
put_v(bc, 1);
put_v(bc, codec->channels);
break;
case CODEC_TYPE_VIDEO:
put_v(bc, codec->width);
put_v(bc, codec->height);
put_v(bc, codec->sample_aspect_ratio.num);
put_v(bc, codec->sample_aspect_ratio.den);
put_v(bc, 0); /* csp type -- unknown */
break;
default:
break;
}
write_streamheader(nut, bc, codec, i);
update_packetheader(nut, bc, 0, 1);
}