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avcodec/dpx: extract frame rate 

Fixes part of Ticket3511

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-04-25 23:13:17 +02:00
parent af165acefa
commit e0e60c9211
1 changed files with 11 additions and 0 deletions
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11
libavcodec/dpx.c
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@ -20,6 +20,7 @@
*/
#include "libavutil/intreadwrite.h"
#include "libavutil/intfloat_readwrite.h"
#include "libavutil/imgutils.h"
#include "bytestream.h"
#include "avcodec.h"
@ -146,6 +147,16 @@ static int decode_frame(AVCodecContext *avctx,
else
avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
if (offset >= 1724 + 4) {
buf = avpkt->data + 1724;
i = read32(&buf, endian);
if(i) {
AVRational q = av_d2q(av_int2flt(i), 4096);
if (q.num > 0 && q.den > 0)
avctx->time_base = av_inv_q(q);
}
}
switch (descriptor) {
case 6: // Y
elements = 1;