Signed-off-by: Diego Biurrun <diego@biurrun.de>

Restore alphabetical order in lists, break overly long lines, do some
prettyprinting, add some explanatory section comments, group parts
together that belong together logically.

Based on the original documentation found in mpeg2dec (1995).
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

The new fields can be accessed directly and are more intelligible.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Deprecated in 07/2012.

In Little Endian the vec_ld/vec_st operations work as
expected only for byte-vectors.

Bug-Id: CID 1267890
CC: libav-stable@libav.org
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

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

CC: libav-stable@libav.org
Bug-Id: CID 1267888 / CID 1267890
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

CC: libav-stable@libav.org
Bug-Id: CID 1257779

Only shift limited range luma, and always only shift chroma
for upconversion.

Based off a patch by Michael Niedermayer.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Casting the left-most byte to unsigned avoids an undefined
result of the shift by 24 if bit 7 is set.

yuvPlanartouyvy_c and yuvPlanartoyuy2_c are affected.

CC: libav-stable@libav.org
Bug-Id: CID 732281 / CID 732282

sws_getCachedContext is not a full replacement for the function.

Based on a long debug session with Kostya.

The rationale is that you have a packed format in form
<greyscale sample> <alpha sample> <greyscale sample> <alpha sample>
and shortening greyscale to 'G' might make one thing about Greenscale instead.
An alias pixel format and color space name are provided for compatibility.

Bug-Id: 772
CC: libav-stable@libav.org
Found-By: Justin Ruggles <justin.ruggles@gmail.com>
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Blackfin is a painful platform to work with, no test machines are available
and the range of multimedia applications is dubious. Thus it only represents
a maintenance burden.

Instead of setting FFLIBS in each library Makefile configure
exports FFLIBS-$library in config.mak.

Prevent a division by zero down the codepath.

Sample-Id: 00001721-google
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org

Fixes conversion of pal8 to rgb formats with alpha.

Updated references for 2 FATE tests which previously encoded fully
transparent images.

Based on a patch by Baptiste Coudurier <baptiste.coudurier@gmail.com>

Based on a patch by Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

SPARC is no longer being used in any multimedia-related fields and the
VIS optimizations only represent a maintenance burden.

Signed-off-by: Anton Khirnov <anton@khirnov.net>