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Code Issues Releases Activity

compute media info in write_header

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Originally committed as revision 17889 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2009-03-08 22:23:44 +00:00
parent cd34fd9c8c
commit 33605366ee
1 changed files with 19 additions and 17 deletions
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36
libavformat/gxfenc.c
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@ -416,26 +416,11 @@ static int gxf_write_umf_track_description(AVFormatContext *s)
ByteIOContext *pb = s->pb;
GXFContext *gxf = s->priv_data;
int64_t pos = url_ftell(pb);
int tracks[255]={0};
int i;
gxf->umf_track_offset = pos - gxf->umf_start_offset;
for (i = 0; i < s->nb_streams; ++i) {
AVStream *st = s->streams[i];
GXFStreamContext *sc = st->priv_data;
int id = 0;
switch (st->codec->codec_id) {
case CODEC_ID_MPEG1VIDEO: id= 'L'; break;
case CODEC_ID_MPEG2VIDEO: id= 'M'; break;
case CODEC_ID_PCM_S16LE: id= 'A'; break;
case CODEC_ID_DVVIDEO: id= sc->track_type == 6 ? 'E' : 'D'; break;
case CODEC_ID_MJPEG: id= 'V'; break;
default: break;
}
sc->media_info= id << 8;
/* FIXME first 10 audio tracks are 0 to 9 next 22 are A to V */
sc->media_info |= '0' + (tracks[id]++);
GXFStreamContext *sc = s->streams[i]->priv_data;
put_le16(pb, sc->media_info);
put_le16(pb, 1);
}
@ -593,7 +578,8 @@ static int gxf_write_header(AVFormatContext *s)
{
ByteIOContext *pb = s->pb;
GXFContext *gxf = s->priv_data;
int i;
uint8_t tracks[255] = {0};
int i, media_info = 0;
gxf->flags |= 0x00080000; /* material is simple clip */
for (i = 0; i < s->nb_streams; ++i) {
@ -626,6 +612,7 @@ static int gxf_write_header(AVFormatContext *s)
sc->fields = -2;
gxf->audio_tracks++;
gxf->flags |= 0x04000000; /* audio is 16 bit pcm */
media_info = 'A';
} else if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
/* FIXME check from time_base ? */
if (st->codec->height == 480 || st->codec->height == 512) { /* NTSC or NTSC+VBI */
@ -645,20 +632,33 @@ static int gxf_write_header(AVFormatContext *s)
sc->sample_size = st->codec->bit_rate;
sc->fields = 2; /* interlaced */
switch (st->codec->codec_id) {
case CODEC_ID_MJPEG:
sc->track_type = 1;
gxf->flags |= 0x00004000;
media_info = 'J';
break;
case CODEC_ID_MPEG1VIDEO:
sc->track_type = 9;
gxf->mpeg_tracks++;
media_info = 'L';
break;
case CODEC_ID_MPEG2VIDEO:
sc->first_gop_closed = -1;
sc->track_type = 4;
gxf->mpeg_tracks++;
gxf->flags |= 0x00008000;
media_info = 'M';
break;
case CODEC_ID_DVVIDEO:
if (st->codec->pix_fmt == PIX_FMT_YUV422P) {
sc->media_type += 2;
sc->track_type = 6;
gxf->flags |= 0x00002000;
media_info = 'E';
} else {
sc->track_type = 5;
gxf->flags |= 0x00001000;
media_info = 'D';
}
break;
default:
@ -666,6 +666,8 @@ static int gxf_write_header(AVFormatContext *s)
return -1;
}
}
/* FIXME first 10 audio tracks are 0 to 9 next 22 are A to V */
sc->media_info = media_info<<8 | ('0'+tracks[media_info]++);
}
if (ff_audio_interleave_init(s, GXF_samples_per_frame, (AVRational){ 1, 48000 }) < 0)