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Make read_packet fail is the v4l2 driver returns an unexpected frame size

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(driver's bug? If not, we will have to support this in some way)

Originally committed as revision 6756 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Luca Abeni 2006-10-22 09:56:08 +00:00
parent 39a94d24f7
commit 7c7e7464e3
1 changed files with 6 additions and 1 deletions
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7
libavformat/v4l2.c
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@ -308,7 +308,12 @@ static int mmap_read_frame(struct video_data *s, void *frame, int64_t *ts)
return -1;
}
assert (buf.index < s->buffers);
assert(buf.bytesused == s->frame_size);
if (buf.bytesused != s->frame_size) {
av_log(NULL, AV_LOG_ERROR, "The v4l2 frame is %d bytes, but %d bytes are expected\n", buf.bytesused, s->frame_size);
return -1;
}
/* Image is at s->buff_start[buf.index] */
memcpy(frame, s->buf_start[buf.index], buf.bytesused);
*ts = buf.timestamp.tv_sec * int64_t_C(1000000) + buf.timestamp.tv_usec;