Avoids a large amount of warnings about cast discarding qualifiers.

Avoids potential warnings on PPC64 systems.

* qatar/master: (27 commits)
  ac3enc: fix LOCAL_ALIGNED usage in count_mantissa_bits()
  ac3dsp: do not use the ff_* prefix when referencing ff_ac3_bap_bits.
  ac3dsp: fix loop condition in ac3_update_bap_counts_c()
  ARM: unbreak build
  ac3enc: modify mantissa bit counting to keep bap counts for all values of bap instead of just 0 to 4.
  ac3enc: split mantissa bit counting into a separate function.
  ac3enc: store per-block/channel bap pointers by reference block in a 2D array rather than in the AC3Block struct.
  get_bits: add av_unused tag to cache variable
  sws: replace all long with int.
  ARM: aacdec: fix constraints on inline asm
  ARM: remove unnecessary volatile from inline asm
  ARM: add "cc" clobbers to inline asm where needed
  ARM: improve FASTDIV asm
  ac3enc: use LOCAL_ALIGNED macro
  APIchanges: fill in git hash for av_get_pix_fmt_name (0420bd7).
  lavu: add av_get_pix_fmt_name() convenience function
  cmdutils: remove OPT_FUNC2
  swscale: fix crash in bilinear scaling.
  vpxenc: add VP8E_SET_STATIC_THRESHOLD mapping
  webm: support stereo videos in matroska/webm muxer
  ...

Conflicts:
	Changelog
	cmdutils.c
	cmdutils.h
	doc/APIchanges
	doc/muxers.texi
	ffmpeg.c
	ffplay.c
	libavcodec/ac3enc.c
	libavcodec/ac3enc_float.c
	libavcodec/avcodec.h
	libavcodec/get_bits.h
	libavcodec/libvpxenc.c
	libavcodec/version.h
	libavdevice/libdc1394.c
	libavformat/matroskaenc.c
	libavutil/avutil.h
	libswscale/rgb2rgb.c
	libswscale/swscale.c
	libswscale/swscale_template.c
	libswscale/x86/swscale_template.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

commit 5a5a0f16
Author: Diego Biurrun <diego@biurrun.de>
Date:   Fri May 27 19:46:39 2011 +0200

    swscale: Remove unused variables in x86 code.

    libswscale/x86/swscale_template.c:2072: warning: unused variable ‘canMMX2BeUsed’
    libswscale/x86/swscale_template.c:2145: warning: unused variable ‘canMMX2BeUsed’
    libswscale/x86/swscale_template.c:2209: warning: unused variable ‘chrVPixBuf’
    libswscale/x86/swscale_template.c:2237: warning: unused variable ‘chrVSrcPtr’

commit 389e2000
Author: Ronald S. Bultje <rsbultje@gmail.com>
Date:   Fri May 27 12:23:32 2011 -0400

    swscale: delay allocation of formatConvBuffer().

    That means it won't be allocated when not needed. Alongside
    this, it fixes valgrind/fate-detected memory leaks.

commit f327bfa6
Author: Ronald S. Bultje <rsbultje@gmail.com>
Date:   Fri May 27 11:36:43 2011 -0400

    swscale: fix build with --disable-swscale-alpha.

commit 9f5d4502
Author: Ronald S. Bultje <rsbultje@gmail.com>
Date:   Fri May 27 09:28:38 2011 -0400

    swscale: fix non-bitexact yuv2yuv[X2]() MMX/MMX2 functions.

    commit 93681fbd
    Author: Ronald S. Bultje <rsbultje@gmail.com>
    Date:   Thu May 26 11:32:32 2011 -0400

        swscale: fix compile on ppc.

    commit e758573a
    Author: Ronald S. Bultje <rsbultje@gmail.com>
    Date:   Thu May 26 10:36:47 2011 -0400

        swscale: fix compile on x86-32.

    commit 0f4eb8b0
    Author: Ronald S. Bultje <rsbultje@gmail.com>
    Date:   Thu May 26 09:17:52 2011 -0400

        swscale: remove VOF/VOFW.

    commit b4a224c5
    Author: Ronald S. Bultje <rsbultje@gmail.com>
    Date:   Wed May 25 14:30:09 2011 -0400

        swscale: split chroma buffers into separate U/V planes.

        Preparatory step to implement support for sizes > VOFW.

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

Floating-Point-Only section was added after the video encoders chapter
in 034fc7bf merge.

Signed-off-by: Mans Rullgard <mans@mansr.com>

this should fix the windows builds
Signed-off-by: Martin Storsjö <martin@martin.st>

This allows to convert between formats of arbitrary width,
regardless of the value of VOF/VOFW.

Avoid a failure with the default value of "NTSC". Not all drivers
support a standard.

Improve readability.

Signed-off-by: Mans Rullgard <mans@mansr.com>

instead of just 0 to 4.

This does all the actual bit counting as a final step.

No speed difference. This is to allow for more flexible bit counting.

rather than in the AC3Block struct.

This will make it easier to access the bap values without having to chase
the reference block pointers each time.

Also deprecate avcodec_get_pix_fmt_name() in its favor.

Make ff* tools only accept opt_* functions taking two arguments.

The distinction between functions with one and two arguments is quite
pointless. Simplify parse_options() code.

This silences numerous compiler warnings from skip_bits(),
where the cache variable is not used.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

This adds output operands for modified memory allowing the
volatile qualifiers to be dropped.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Mans Rullgard <mans@mansr.com>

This uses one register less.  Also add missing "cc" clobber.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Aligned local variables must use the LOCAL_ALIGNED macro to ensure
correct alignment on all systems.  The unusual size argument to
memset is required since the implementation of LOCAL_ALIGNED may
use a pointer to an array.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Also deprecate avcodec_get_pix_fmt_name() in its favor.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Make ff* tools only accept opt_* functions taking two arguments.

The distinction between functions with one and two arguments is quite
pointless. Simplify parse_options() code.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

via the equivalent AVCodecContext::mb_threshold
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Create a stereo_mode metadata tag to specify the stereo 3d video layout
using the StereoMode tag in a matroska/webm video track.

Many functions have such a prefix, but do not actually use any
instructions or features from that set, thus giving the false
impression that swscale is highly optimized for a particular
system, whereas in reality it is not.