suggested by Carl Eugen Hoyos

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

and checkasm test

Variables used in inline assembly need to be marked with attribute((used)).
Static constants already were, via the define of DECLARE_ASM_CONST.
But DECLARE_ALIGNED does not add this attribute, and some of the variables
defined with it are const only used in inline assembly, and therefore
appeared dead. This change adds a macro DECLARE_ASM_ALIGNED that marks
variables as used.

This change makes FFMPEG work with Clang's ThinLTO.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

None of them are specific to the YASM assembler.

(Cherry-picked from libav commit 39e208f4)
Signed-off-by: James Almer <jamrial@gmail.com>

Also do some small cosmetic changes: Drop pointless _MMX suffix from ABSD2
macro name, drop pointless check for MMX support, we always assume MMX is
available in our SIMD code, fix spelling.

None of them are specific to the YASM assembler.

Configure checks if the ebx register can be used for asm and it has to
be saved if and only if this is not the case.
Without this the build fails when configuring with --toolchain=hardened
--disable-pic on i386 using gcc 4.8:
error: PIC register clobbered by '%ebx' in 'asm'

In that case gcc 4.8 reserves the ebx register for the GOT needed for
PIE, so it can't be used in asm directly.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>

Found-by: Luca Barbato
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>

It is used to select functions that work with 9-15bits.

Make sure the scaling functions for the 9-15bits are used for
9-15bits bit depths correctly.

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>

See merge commit '39d6d361'.

These warnings conflict with system macros on Solaris, producing
truckloads of warnings about macro redefinition.

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

Removed previous swscale code under '#ifndef NEW_FILTER'
and removed unused fields of SwsContext

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

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

Libav, for some reason, merged this as a public API function. This will
aid in future merges.

A define is left for backwards compat, just in case some person
used it, since it is in a public header.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Fixes: 451b3e0cf956c0bd2f27ed753ac24050/asan_heap-oob_2873c01_3231_7ed10a9464d15f0d57277f5917c566a8.AVI

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

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

swscale/x86/rgb2rgb_template: Fallback to mmx in interleaveBytes() if the alignment is insufficient for SSE*

This also as a sideeffect fixes the non aligned case
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes Ticket5013
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

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

+ split color conversion from scaling
- disabled gamma correction, until it's refactored too
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

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

Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Almer <jamrial@gmail.com>

Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Almer <jamrial@gmail.com>

Reviewed-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: James Almer <jamrial@gmail.com>