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avformat/yuv4mpegdec: Don't call avio_tell() twice

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Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-08-26 10:52:04 +02:00
parent 9634e6b0b0
commit 9abf0e0419
1 changed files with 3 additions and 2 deletions
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5
libavformat/yuv4mpegdec.c
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@ -44,6 +44,7 @@ static int yuv4_read_header(AVFormatContext *s)
enum AVFieldOrder field_order = AV_FIELD_UNKNOWN;
enum AVColorRange color_range = AVCOL_RANGE_UNSPECIFIED;
AVStream *st;
int64_t data_offset;
for (i = 0; i < MAX_YUV4_HEADER; i++) {
header[i] = avio_r8(pb);
@ -254,9 +255,9 @@ static int yuv4_read_header(AVFormatContext *s)
s->packet_size = av_image_get_buffer_size(st->codecpar->format, width, height, 1) + Y4M_FRAME_MAGIC_LEN;
if ((int) s->packet_size < 0)
return s->packet_size;
s->internal->data_offset = avio_tell(pb);
s->internal->data_offset = data_offset = avio_tell(pb);
st->duration = (avio_size(pb) - avio_tell(pb)) / s->packet_size;
st->duration = (avio_size(pb) - data_offset) / s->packet_size;
return 0;
}