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jv demuxer: define JV_PREAMBLE_SIZE instead of hard coding the number 

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
This commit is contained in:
Peter Ross 2011-03-12 13:31:40 +11:00 committed by Ronald S. Bultje
parent 20c1281fe3
commit 772cb06281
1 changed files with 5 additions and 3 deletions
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8
libavformat/jvdec.c
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@ -28,6 +28,8 @@
#include "libavutil/intreadwrite.h"
#include "avformat.h"
#define JV_PREAMBLE_SIZE 5
typedef struct {
int audio_size; /** audio packet size (bytes) */
int video_size; /** video packet size (bytes) */
@ -154,15 +156,15 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
jv->state++;
if (jvf->video_size || jvf->palette_size) {
int size = jvf->video_size + jvf->palette_size;
if (av_new_packet(pkt, size + 5))
if (av_new_packet(pkt, size + JV_PREAMBLE_SIZE))
return AVERROR(ENOMEM);
AV_WL32(pkt->data, jvf->video_size);
pkt->data[4] = jvf->video_type;
if (avio_read(pb, pkt->data + 5, size) < 0)
if (avio_read(pb, pkt->data + JV_PREAMBLE_SIZE, size) < 0)
return AVERROR(EIO);
pkt->size = size + 5;
pkt->size = size + JV_PREAMBLE_SIZE;
pkt->stream_index = 1;
pkt->pts = jv->pts;
if (jvf->video_type != 1)