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set correct first gop closed value

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Originally committed as revision 6043 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2006-08-21 15:49:08 +00:00
parent 2b7e230b10
commit afbbe5e34f
1 changed files with 4 additions and 3 deletions
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7
libavformat/gxfenc.c
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@ -181,7 +181,7 @@ static int gxf_write_mpeg_auxiliary(ByteIOContext *pb, GXFStreamContext *ctx)
size = snprintf(buffer, 1024, "Ver 1\nBr %.6f\nIpg 1\nPpi %d\nBpiop %d\n"
"Pix 0\nCf %d\nCg %d\nSl 7\nnl16 %d\nVi 1\nf1 1\n",
(float)ctx->codec->bit_rate, ctx->p_per_gop, ctx->b_per_gop,
ctx->codec->pix_fmt == PIX_FMT_YUV422P ? 2 : 1, ctx->first_gop_closed,
ctx->codec->pix_fmt == PIX_FMT_YUV422P ? 2 : 1, ctx->first_gop_closed == 1,
ctx->codec->height / 16);
put_byte(pb, 0x4F);
put_byte(pb, size + 1);
@ -418,7 +418,7 @@ static int gxf_write_umf_media_mpeg(ByteIOContext *pb, GXFStreamContext *stream)
put_le32(pb, 2);
else
put_le32(pb, 1); /* default to 420 */
put_le32(pb, stream->first_gop_closed); /* closed = 1, open = 0, unknown = 255 */
put_le32(pb, stream->first_gop_closed == 1); /* closed = 1, open = 0, unknown = 255 */
put_le32(pb, 3); /* top = 1, bottom = 2, frame = 3, unknown = 0 */
put_le32(pb, 1); /* I picture per GOP */
put_le32(pb, stream->p_per_gop);
@ -625,6 +625,7 @@ static int gxf_write_header(AVFormatContext *s)
sc->fields = 2; /* interlaced */
switch (sc->codec->codec_id) {
case CODEC_ID_MPEG2VIDEO:
sc->first_gop_closed = -1;
sc->track_type = 4;
gxf->mpeg_tracks++;
gxf->flags |= 0x00008000;
@ -692,7 +693,7 @@ static int gxf_parse_mpeg_frame(GXFStreamContext *sc, const uint8_t *buf, int si
int i;
for(i=0; i<size-4 && c!=0x100; i++){
c = (c<<8) + buf[i];
if(c == 0x1B8) /* GOP start code */
if(c == 0x1B8 && sc->first_gop_closed == -1) /* GOP start code */
sc->first_gop_closed= (buf[i+4]>>6)&1;
}
return (buf[i+1]>>3)&7;