Add av_sat_sub32 and av_sat_dsub32 as the subtraction analogues to
av_sat_add32/av_sat_dadd32.
Also clarify the formulas for dadd32/dsub32.
Signed-off-by: Andrew D'Addesio <modchipv12@gmail.com>
The macro was added in 43171a2a73, but I forgot to add it to the DJGPP architecture in that change.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Drivers can support a format for surfaces without also supporting it for
images, so we can't assume that sw_format is usable for transfer. This
would previously hit an assert in cases where it isn't.
Makes the uninit function re-entrable, which can be a common case
when an API user first tries to initialize its context, fails, and
then finally unrefs the AVHWDevice.
Fixes a crash reported by sm2345 on IRC.
This was added for compatibility with libav, by leaving a space for
formats added in libav to be merged. Since that feature has been
removed, we don't need a gap here.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
This was added in early 2013 and abandoned several months later; as far as
I can tell, there are no external users. Future OpenCL use will be via
hwcontext, which requires neither special OpenCL-only API nor global state
in libavutil.
All internal users are also deleted - this is just the unsharp filter
(replaced by unsharp_opencl, which is more flexible) and the deshake filter
(no replacement).
Using cl_arm_import_memory. Unfortunately, despite this not being a
standard extension, the function clImportMemoryARM() is not accessible
via clGetExtensionFunctionAddressForPlatform(). This means that it has
to be linked directly to the ARM OpenCL binary, so making a portable
binary is not possible as it is with all other mapping extensions.
Fixes build warning of "variable 's' is declared but not used"
Signed-off-by: Zhong Li <zhong.li@intel.com>
Signed-off-by: Mark Thompson <sw@jkqxz.net>
* commit '3152058bf1dca318898550efacf0286f4836cae6':
libavcodec: Don't use dllexport, only dllimport when building DLLs
Merged-by: James Almer <jamrial@gmail.com>
The macros for ICC and MSVC correctly push and pop the diagnostic
state of the compiler when disabling deprecation warnings. The
ones for clang/gcc should do the same. Without this, if a blanket
deprecation warning is applied to the code base it'll be flipped
back on incorrectly with FF_ENABLE_DEPRECATION_WARNINGS.
Signed-off-by: Dale Curtis <dalecurtis@chromium.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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>
* commit '7ac092d05de487d088bc96ab4a7bd6207fbfa98c':
build: CryptGenRandom --> wincrypt, it is a better name
Merged-by: James Almer <jamrial@gmail.com>
* commit 'ccbb31c14b766ef666ef2daa8c467e478183a957':
qsv: Make sure the session is set with the latest version
Merged-by: James Almer <jamrial@gmail.com>
* commit 'accb06120c13a4ead442464d96f2fa318fa07a4e':
configure: Use dllexport/dllimport for data symbols across DLLs with mingw
Merged-by: James Almer <jamrial@gmail.com>
* commit 'abf1c058d1bd0ed1b820ea5e501a4484756f00b0':
msvc: Properly specify dllexport for data symbols shared across dll boundaries
Merged-by: James Almer <jamrial@gmail.com>
This gives FFmpeg libs a field that they can freely and safely use.
Avoiding the need of wrapping of a users opaque_ref field and its issues.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
The user-supplied value for timecode_rate in drawtext is rounded
to nearest integer. So, a supplied value of 0.49 or lower is rounded to 0.
This throws a misleading error message which says "Timecode frame rate must be
specified". Changed message to account for values under one.
Also noted supported framerates for drop TC.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
* commit '97cfe1d8bd1968143e2ba9aa46ebe9504a835e24':
Convert all AVClass struct declarations to designated initializers.
Merged-by: James Almer <jamrial@gmail.com>
