lavd/v4l2: copy frames into normally allocated packets whenever there is just one buffer left available

This will avoid the possibility that we dequeue more buffers than we
have obtained from the v4l2 driver.

Fixes ticket #1570
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This is needed for av_dict_*
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Overreads can not happen as header size of 512 bytes is required.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

Libsoxr 0.1.1 will be out very soon; no changes planned beyond what's currently in git.
It includes a couple of fixes (not affecting FFmpeg's current usage) and a minor API change (but remains ABI compatible).
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

* qatar/master:
  lls: Do not return from void functions
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '4da950c0':
  lls: #ifndef --> #if in FF_API_ version guard
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'e8c52271':
  Revert "Move H264/QPEL specific asm from dsputil.asm to h264_qpel_*.asm."

Conflicts:
	libavcodec/x86/dsputil.asm
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '399663be':
  lls: mark max_order as unsigned short
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '9d4da474':
  lls: move to the private namespace

Conflicts:
	libavutil/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '7ac6d242':
  lls: K&R formatting cosmetics
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'df0229a7':
  avconv: Apply codec options to streams that are copied as well
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'cb6f8245':
  cmdutils: Allow calling filter_codec_opts without a set encoder
  pnm: Use av_pix_fmt_desc_get instead of accessing the array directly
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This reverts commit f90ff772.

The code should be put back in h264_qpel_8bit.asm, but unfortunately
it is unconditionally used from dsputil_mmx.c since 71155d7b.

This ensures that fps and other values are estimated correctly,
the probesize also is intended to limit disk/protocol reads which
does not apply to lavfi inputs at all.

Fixes Ticket1051

Something similar could be usefull to other input devices
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

This only happens with missing chlist attribute from header.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

Previous naming was misleading.

Also fix wrong message about missing
support for 32-bit unsigned int pixel type.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

Needed for proper decoding of channels with subsampling
and also for remaining compression methods.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

If the first "special" character in a filename is a comma,
it can introduce protocol options, but only if there is a
colon at the end. Otherwise, it is just a filename with a
comma.

Fix trac ticket #2303.

If the channel layout is unknown, lswr will internally use
the default one for the corresponding number of channels.

Fix trac ticket #2300 because the duration of the segments
was computed using the timestamp of the last packet plus its
duration using the 1/90000 default time base instead of using
the chained muxer time base.