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| author | Diederick Niehorster <dcnieho@gmail.com> | 2021-12-21 14:53:30 +0100 |
|---|---|---|
| committer | Gyan Doshi <ffmpeg@gyani.pro> | 2021-12-24 14:06:27 +0530 |
| commit | 937de260eb293000d1bf043974ef56cf9a1ad4e0 (patch) | |
| tree | a7898caf4889993071706e943bf07f9a48a2e7cd /libavdevice | |
| parent | 271e55987faf41c850dc2c2e719ffb1e097242d9 (diff) | |
| download | ffmpeg-937de260eb293000d1bf043974ef56cf9a1ad4e0.tar.gz | |
avdevice/dshow: set no-seek flags
avdevice/dshow is a realtime device and as such does not support
seeking. Therefore, its demuxer format should define the
AVFMT_NOBINSEARCH, AVFMT_NOGENSEARCH and AVFMT_NO_BYTE_SEEK flags.
With these flags set, attempting to seek (with, e.g.,
avformat_seek_file()) correctly yields -1 (operation not permitted)
instead of -22 (invalid argument).
This actually seems to apply to many other devices, at least the
gdigrab, v4l2, vfwcap, x11grab, fbdev, kmsgrab and android_camera
devices, from reading the source.
Signed-off-by: Diederick Niehorster <dcnieho@gmail.com>
Reviewed-by: Roger Pack <rogerdpack2@gmail.com>
Diffstat (limited to 'libavdevice')
| -rw-r--r-- | libavdevice/dshow.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavdevice/dshow.c b/libavdevice/dshow.c index 5e6eb9c85d..0ef3b3d13e 100644 --- a/libavdevice/dshow.c +++ b/libavdevice/dshow.c @@ -1329,6 +1329,6 @@ const AVInputFormat ff_dshow_demuxer = { .read_header = dshow_read_header, .read_packet = dshow_read_packet, .read_close = dshow_read_close, - .flags = AVFMT_NOFILE, + .flags = AVFMT_NOFILE | AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK, .priv_class = &dshow_class, }; |