Prevent out of array accesses

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

After opening the device, the first thing we should do is selecting the
input. This is because the image formats (VIDIOC_ENUM_FMT ioctl) and the
standards (VIDIOC_ENUMSTD ioctl) supported may depend on the selected
input ([1] and [2]).

[1] http://linuxtv.org/downloads/v4l-dvb-apis/vidioc-enum-fmt.html
[2] http://linuxtv.org/downloads/v4l-dvb-apis/vidioc-enumstd.htmlSigned-off-by: Stefano Sabatini <stefasab@gmail.com>

Make device_try_init() return an error value, and allow to properly
report errors which are not due to a wrong pixel/codec configuration.

In particular, report intelligible feedback in case of busy device.

The options have been deprecated and are non-operational since more than
two years.

* qatar/master:
  arm: vp8: Fix the plain-armv6 version of vp8_luma_dc_wht
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '96753bd0':
  dsputil: x86: Correct the number of registers used in put_no_rnd_pixels16_l2
  dsputil: add missing HAVE_YASM guard
  hwaccel: do not offer unsupported pixel formats
  vdpau: add missing pixel format for H.264
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

put_no_rnd_pixels16_l2 allocated 5 instead of 6 registers.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Fix compile error under
"--disable-optimizations --disable-yasm --disable-inline-asm"
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Also fix project name

See git blame/log/show and
commit 826f429a
Author: Michael Niedermayer <michaelni@gmx.at>
Date:   Sun Jan 5 15:57:10 2003 +0000

    qpel in mmx2/3dnow
    qpel refinement quality parameter

    Originally committed as revision 1393 to svn://svn.ffmpeg.org/ffmpeg/trunkSigned-off-by: Michael Niedermayer <michaelni@gmx.at>

This also fixes the project name

Original authors fabrice and nick go back to the initial ffmpeg commit
Others for example contributed in: (for a complete list please use git blame / show / log)

commit e9c0a38f
Author: Zdenek Kabelac <kabi@informatics.muni.cz>
Date:   Tue May 28 16:35:58 2002 +0000

    * optimized avg_* functions (except xy2)
    * minor speedup for put_pixels_x2 & cleanup

    Originally committed as revision 619 to svn://svn.ffmpeg.org/ffmpeg/trunk

commit 607dce96
Author: Michael Niedermayer <michaelni@gmx.at>
Date:   Fri May 17 01:04:14 2002 +0000

    hopefully faster mmx2&3dnow MC

    Originally committed as revision 506 to svn://svn.ffmpeg.org/ffmpeg/trunkSigned-off-by: Michael Niedermayer <michaelni@gmx.at>

* commit '71155d7b':
  dsputil: x86: Convert mpeg4 qpel and dsputil avg to yasm

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

* commit 'f90ff772':
  Move H264/QPEL specific asm from dsputil.asm to h264_qpel_*.asm.
  doc: update the reference for the title
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Regression since 3af3a300.
Fixes Ticket2167.

This makes the plain-armv6 version use the same registers as the
armv6t2 version above.

This fixes fate-vp8 on plain-armv6 devices.
Signed-off-by: Martin Storsjö <martin@martin.st>

Fixes #2193.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

put_no_rnd_pixels16_l2 allocated 5 instead of 6 registers.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Fix compile error under
"--disable-optimizations --disable-yasm --disable-inline-asm"
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Fixes integer & buffer overflow

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This prevents potential crashes and out of memory issues if
the user manually sets such insane values.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Prevent null pointer dereference

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

fixes out of array reads

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

planar rgb formats do not use the table
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

We have to make some symetric changes elsewhere as this increases
the precission with which samples are stored.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This code path is not implemented and makes not much sense to implement
either.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The function doesnt support >8bit currently
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  mpegvideo_enc: fix indentation in load_input_picture()

Conflicts:
	libavcodec/mpegvideo_enc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '3f47d316':
  mpegvideo_enc: do not modify the input frame.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '7bcaeb40':
  mjpegdec: fix indentation
  rawdec: cosmetics, reformat
  mimic: return meaningful error codes.

Conflicts:
	libavcodec/mjpegdec.c
	libavcodec/rawdec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'a0cabd0a':
  mimic: cosmetics, reformat
  iff: drop ff_ prefix from a static function.
  pngdec: cosmetics, reformat.
  dxa: return meaningful error codes.
  eatgq: cosmetics, reformat.

Conflicts:
	libavcodec/dxa.c
	libavcodec/eatgq.c
	libavcodec/iff.c
	libavcodec/mimic.c
	libavcodec/pngdec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

The variable "$section" was replaced by "$chapter".