The base class may have set the DISCONT flag on the first buffer pushed
out. We need to clear that when recycling buffers back into the buffer
pool, otherwise we constantly push out buffers with the discont flag
set, which might upset downstream elements, esp. for compressed
formats like mpeg-ts.
Make sure we always call munmap() with the same size we called mmap()
with before.
Current v4l2src uses the same structure for VIDIOC_QUERYBUF, VIDIOC_QBUF
and v4l2_munmap calls. The problem is that the video buffer size (length)
may vary for compressed or emulated bufs. VIDIOC_QBUF will change it if
we pass the pointer of a v4l2_buffer. This is why we should avoid using
same variable for mmap and video buffers.
https://bugzilla.gnome.org/show_bug.cgi?id=671126
... rather than from bits per sample, since spec states values are already
left justified w.r.t. bits per sample but not w.r.t. bytes per sample
(and so the latter determines the normalization, or indicated depth).
If downstream didn't answer our SEEKING query and told us
it's seekable, default to streaming=true. We couldn't do
this in 0.10 for backwards compatibility reasons, but we
can in 0.11. Play it safe.
Ignore the "streamable" property setting and create streamable
output if downstream is known not to be seekable (as queried
via a SEEKABLE query).
Fixes pipelines like qtmux ! appsink possibly creating seemingly
corrupted output if streamable has not been set to true.
Ignore the "streamable" property setting and create streamable
output if downstream is known not to be seekable (as queried
via a SEEKABLE query).
Fixes pipelines like flvmux ! appsink possibly creating seemingly
corrupted output if streamable has not been set to true.
Ignore the "streamable" property setting and create streamable
output if downstream is known not to be seekable (as queried
via a SEEKABLE query).
Fixes pipelines like webmmux ! appsink creating seemingly
corrupted output if streamable has not been set to true.
Set channels and channel-layout on the right structure; that is, the
structure we are going to append to the caps we are building, and not
the structure we are using as a template for all the structures. Fixes
first structure of the returned caps not having any channel info set
on it.
