From ed72542539fb61dc3a6d6280d8a6a956ac04a071 Mon Sep 17 00:00:00 2001 From: mrlika Date: Mon, 2 Sep 2013 15:10:22 +0300 Subject: [PATCH] lavd/v4l2: do not fail when VIDIOC_ENUMSTD returns EINVAL without a valid match With some (buggy) drivers, the VIDIOC_G_STD ioctl returns a std_id that cannot be matched with any of the enumerated v4l2_standard structures (for example std_id = 0 or std_id = 0xffffff). Do not fail when we reach the end of the enumeration without a valid match. Fixes ticket #2370 Note: This commit message has been modified by Giorgio Vazzana, the original commit message was: "Fixed regression for mandatory VIDIOC_ENUMSTD support by v4l2" Signed-off-by: Michael Niedermayer --- libavdevice/v4l2.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavdevice/v4l2.c b/libavdevice/v4l2.c index 1199f4b8f8..1b2ede4a22 100644 --- a/libavdevice/v4l2.c +++ b/libavdevice/v4l2.c @@ -687,6 +687,10 @@ static int v4l2_set_parameters(AVFormatContext *s1) standard.index = i; if (v4l2_ioctl(s->fd, VIDIOC_ENUMSTD, &standard) < 0) { ret = AVERROR(errno); + if (ret == AVERROR(EINVAL)) { + tpf = &streamparm.parm.capture.timeperframe; + break; + } av_log(s1, AV_LOG_ERROR, "ioctl(VIDIOC_ENUMSTD): %s\n", av_err2str(ret)); return ret; }