Add swscale input support for Y210LE, output support and fate
test could be added later if there is requirement for software
CSC to this packed format.
Signed-off-by: Linjie Fu <linjie.fu@intel.com>

Bug #8255 points out a double free error in libwscale/utils.c file.
The double free is because the pointer to cascaded_context of an
sw_context is not set to NULL after freeing it. When the sw_context
is later freed, sws_freeContext is called on the cascaded_context,
causing a double free.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libswscale/utils.c:89:42: warning: adding 'unsigned long' to a string does not append to the string [-Wstring-plus-int]

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Affected the FATE-tests vsynth_lena-dv-411, vsynth1-dv-411,
vsynth2-dv-411 and hevc-paramchange-yuv420p.yuv420p10.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

The implementation is pretty straight-forward. Most of the existing
NV12 codepaths work regardless of subsampling and are re-used as is.
Where necessary I wrote the slightly different NV24 versions.

Finally, the one thing that confused me for a long time was the
asm specific x86 path that did an explicit exclusion check for NV12.
I replaced that with a semi-planar check and also updated the
equivalent PPC code, which Lauri kindly checked.

Based on ab839054 by Luca Barbato.
Signed-off-by: James Almer <jamrial@gmail.com>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

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

To make the best use of existing code, I generalised the wrapper
that currently does yuv420p10 to p010 to support any mixture of
input and output sizes between 10 and 16 bits. This had the side
effect of yielding a working code path for all yuv420p1x formats
to p01x.

We already rely on just mmap() in other places.

Fixes:

    libswscale/utils.c:1632:5: warning: macro expansion producing 'defined' has undefined behavior [-Wexpansion-to-defined]
    #if USE_MMAP
        ^
    libswscale/utils.c:1577:49: note: expanded from macro 'USE_MMAP'
    #define USE_MMAP (HAVE_MMAP && HAVE_MPROTECT && defined MAP_ANONYMOUS)
                                                    ^
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Fixes:

    libswscale/utils.c:1632:5: warning: macro expansion producing 'defined' has undefined behavior [-Wexpansion-to-defined]
    #if USE_MMAP
        ^
    libswscale/utils.c:1577:49: note: expanded from macro 'USE_MMAP'
    #define USE_MMAP (HAVE_MMAP && HAVE_MPROTECT && defined MAP_ANONYMOUS)
                                                    ^
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

glibc introduced _DEFAULT_SOURCE in version 2.19 to replace _BSD_SOURCE and
_SVID_SOURCE, which were deprecated in version 2.20. Add _DEFAULT_SOURCE
where the latter two are used to be forwards-compatible and avoid warnings
about the use of deprecated definitions.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

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

Based on 19be5fb7 by Luca Barbato.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

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

Implemented for AV_PIX_FMT_GBRP12.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

They are internal symbols that should not be exported.

based on a patch by Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Diego Biurrun <diego@biurrun.de>

It is an internal swscale symbol and thus should not be exported.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Diego Biurrun <diego@biurrun.de>

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