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vp3: Read fps and aspect ratio in the decoder

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Originally committed as revision 22898 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
David Conrad 2010-04-17 02:04:39 +00:00
parent ddc7e438e0
commit 8099d6c985
1 changed files with 10 additions and 4 deletions
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14
libavcodec/vp3.c
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@ -1953,6 +1953,7 @@ static int theora_decode_header(AVCodecContext *avctx, GetBitContext *gb)
Vp3DecodeContext *s = avctx->priv_data;
int visible_width, visible_height, colorspace;
int offset_x = 0, offset_y = 0;
AVRational fps;
s->theora = get_bits_long(gb, 24);
av_log(avctx, AV_LOG_DEBUG, "Theora bitstream version %X\n", s->theora);
@ -1982,10 +1983,15 @@ static int theora_decode_header(AVCodecContext *avctx, GetBitContext *gb)
offset_y = get_bits(gb, 8); /* offset y, from bottom */
}
skip_bits(gb, 32); /* fps numerator */
skip_bits(gb, 32); /* fps denumerator */
skip_bits(gb, 24); /* aspect numerator */
skip_bits(gb, 24); /* aspect denumerator */
fps.num = get_bits_long(gb, 32);
fps.den = get_bits_long(gb, 32);
if (fps.num && fps.den) {
av_reduce(&s->avctx->time_base.num, &s->avctx->time_base.den,
fps.den, fps.num, INT_MAX);
}
avctx->sample_aspect_ratio.num = get_bits_long(gb, 24);
avctx->sample_aspect_ratio.den = get_bits_long(gb, 24);
if (s->theora < 0x030200)
skip_bits(gb, 5); /* keyframe frequency force */