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It does not make sense in the vast majority of use cases, no currently
defined AV_OPT_TYPE_FLAGS options in Libav set the range to anything
nontrivial, and many of those get it wrong (the "correct" range is
INT_MIN to INT_MAX so that the builtin constant "all" works).
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Signed-off-by: Anton Khirnov <anton@khirnov.net>
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size_t is guaranteed to be unsigned
Signed-off-by: Anton Khirnov <anton@khirnov.net>
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Patch based on x264's AVX2 detection
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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libavutil/avstring.c:278:9: warning: passing argument 1 of ‘av_free’ discards ‘const’ qualifier from pointer target type
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This makes sure that pointers from av_strdup are reallocable,
which is used in av_dict_set if the AV_DICT_APPEND flag is set.
Nothing should rely on pointers from av_strdup being aligned.
Signed-off-by: Martin Storsjö <martin@martin.st>
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Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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This is so we can sync to x264's version of FMA4 support.
This partialy reverts commit 79687079a97a039c325ab79d7a95920d800b791f.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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Automatically use VEX-encoding in AVX/AVX2/XOP/FMA3/FMA4
functions for all instructions that exists in a VEX-encoded
version.
This change makes it easier to extend existing code to use AVX2.
Also add support for AVX emulation of a few instructions that
were missing before.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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The Mach-O bug was fixed in yasm 0.8.0 and we don't
support versions that old anymore.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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Prevents a crash if the misaligned exception mask bit is
cleared for some reason.
Misaligned SSE functions are only used on AMD Phenom CPUs
and the benefit is miniscule. They also require modifying
the MXCSR control register and by removing those functions
we can get rid of that complexity altogether.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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Small backports that sneaked into other asm commits in x264.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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This is also a valid value for WIN64.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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Store XMM6 and XMM7 in the shadow space in functions that
clobbers them. This way we don't have to adjust the stack
pointer as often, reducing the number of instructions as
well as code size.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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For when we want to mix simd sizes within one function.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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SWAP with >=3 named (rather than numbered) args
PERMUTE followed by SWAP with 2 named args
used to produce the wrong permutation
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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Reduces code size because movaps/movups is one byte
shorter than movdqa/movdqu.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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Now RET checks whether it immediately follows a branch, so the
programmer dosen't have to keep track of that condition. REP_RET
is still needed manually when it's a branch target, but that's
much rarer.
The implementation involves lots of spurious labels, but that's OK
because we strip them.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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Provide some information for every function and add a group.
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They were inconsistent (overlapping fields and wrong sizes)
Signed-off-by: Anton Khirnov <anton@khirnov.net>
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Because of -Werror=implicit-function-declaration the build will fail.
Signed-off-by: Martin Storsjö <martin@martin.st>
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Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
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Previously this did a double free (and returned an error).
Reported-by: Justin Ruggles
Signed-off-by: Martin Storsjö <martin@martin.st>
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Signed-off-by: Martin Storsjö <martin@martin.st>
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Prior to this on msvc/icl there was no handling of deprecated functions
and the deprecated warning was disabled.
After enabling there are a number of warnings relating to the CRT and
the use of the non-secure versions of several functions. Defining
_CRT_SECURE_NO_WARNINGS silences these warnings.
Signed-off-by: Martin Storsjö <martin@martin.st>
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realloc() does not accept pointers from memalign().
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Add one copy of the function into each of the libraries, similarly
to what we do for log2_tab. When using static libs, only one
copy of the file_open.o object file gets included, while when
using shared libraries, each of them get a copy of its own.
This fixes DLL builds with a statically linked C runtime, where
each DLL effectively has got its own instance of the C runtime,
where file descriptors can't be shared across runtimes.
On systems not using msvcrt, the function is not duplicated.
Signed-off-by: Martin Storsjö <martin@martin.st>
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Signed-off-by: Martin Storsjö <martin@martin.st>
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well
This used to only be necessary in static builds (when using the
dynamically linked C runtime), since the _imp prefixed symbols do
exist when linking to the actual DLL. When building testprogs,
however, the current library (e.g. libavutil for some of the testprogs)
is linked statically.
This fixes make fate on DLL builds when using the dynamically
linked C runtime.
Signed-off-by: Martin Storsjö <martin@martin.st>
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When libavformat was changed to use the new avpriv_open function
in 51eb213d001, this silently bypassed the existing wrapper for
win32. Move the win32 wrapper into libavutil/file.c to make sure
it gets called everywhere (not just in the libavformat case).
This makes sure that non-ascii file names gets opened properly
(where file names internally are stored as utf8, but they get
converted to wchar_t and opened with _wsopen).
Signed-off-by: Martin Storsjö <martin@martin.st>
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Not all platforms have the function.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Martin Storsjö <martin@martin.st>
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Signed-off-by: Anton Khirnov <anton@khirnov.net>
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Signed-off-by: Anton Khirnov <anton@khirnov.net>
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