FFmpeg

Commit Graph

Author	SHA1	Message	Date
Mans Rullgard	90540c2d5a	x86: swscale: fix fragile memory accesses To access data at multiple fixed offsets from a base address, this code uses a single "m" operand and code of the form "32%0", relying on the memory operand instantiation having no displacement, giving a final result of the form "32(%rax)". If the compiler uses a register and displacement, e.g. "64(%rax)", the end result becomes "3264(%rax)", which obviously does not work. Replacing the "m" operands with "r" operands allows safe addition of a displacement. In theory, multiple memory operands could use a shared base register with different index registers, "(%rax,%rbx)", potentially making more efficient use of registers. In the cases at hand, no such sharing is possible since the addresses involved are entirely unrelated. After this change, the code somewhat rudely accesses memory without using a corresponding memory operand, which in some cases can lead to unwanted "optimisations" of surrounding code. However, the original code also accesses memory not covered by a memory operand, so this is not adding any defect not already present. It is also hightly unlikely that any such optimisations could be performed here since the memory locations in questions are not accessed elsewhere in the same functions. This fixes crashes with suncc. Signed-off-by: Mans Rullgard <mans@mansr.com>	12 years ago
Mans Rullgard	10b83cb653	x86: swscale: remove disabled code This code has been disabled since 2003. Nobody will ever look at it again. Signed-off-by: Mans Rullgard <mans@mansr.com>	12 years ago
Mans Rullgard	c318626ce2	x86: rename libavutil/x86_cpu.h to libavutil/x86/asm.h This puts x86-specific things in the x86/ subdirectory where they belong. Signed-off-by: Mans Rullgard <mans@mansr.com>	12 years ago
Diego Biurrun	239fdf1b4a	x86: build: replace mmx2 by mmxext Refactoring mmx2/mmxext YASM code with cpuflags will force renames. So switching to a consistent naming scheme beforehand is sensible. The name "mmxext" is more official and widespread and also the name of the CPU flag, as reported e.g. by the Linux kernel.	12 years ago
Diego Biurrun	5a6e3c039c	swscale: Mark all init functions as av_cold	13 years ago
Diego Biurrun	16d2a1a51c	swscale: x86: Drop pointless _mmx suffix from filenames The files do not contain only MMX code.	13 years ago
Ronald S. Bultje	b2668c85e9	x86: swscale: Place inline assembly code under appropriate #ifdefs Fixes compilation for compilers that do not support gcc inline assembly. Signed-off-by: Diego Biurrun <diego@biurrun.de>	13 years ago
Michael Niedermayer	9b2b57681c	sws/x86: add av_assert() to ensure 16bit code is used with 16bit data Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	a32032b508	sws/x86: add some forgotten 12bit planar yuv cases Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	fa36f33422	sws: support 12&14 bit planar colorspaces Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Martin Storsjö	557519189f	swscale: yuv2planeX 8bit >=sse2 functions need aligned stack on x86-32. Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>	13 years ago
Michael Bradshaw	1b27b8bf6c	MANGLEd swscale x86 asm to save registers register starvation caused gcc4.2 to fail building 32 bit shared libs on 64 bit OS X Signed-off-by: Michael Bradshaw <mbradshaw@sorensonmedia.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Diego Biurrun	baaab6069a	build: Move all arch OBJS declarations into arch subdirectory Makefiles.	13 years ago
Henrik Gramner	729f90e268	x86inc improvements for 64-bit Add support for all x86-64 registers Prefer caller-saved register over callee-saved on WIN64 Support up to 15 function arguments Also (by Ronald S. Bultje) Fix up our asm to work with new x86inc.asm. Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com> Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>	13 years ago
Ronald S. Bultje	45fdcc8e2d	swscale: convert hscale() to use named arguments.	13 years ago
Ronald S. Bultje	aba7a827aa	swscale: convert hscale to cpuflags().	13 years ago
Ronald S. Bultje	2254b559cb	swscale: make filterPos 32bit. Fixes overflows for large image sizes. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org	13 years ago
Ronald S. Bultje	dccb2cd3f9	swscale: make %rep unconditional. Fixes pre-processing with latest versions of nasm.	13 years ago
Ronald S. Bultje	8249a23fc1	swscale: remove now unnecessary hack.	13 years ago
Ronald S. Bultje	1d8c4af396	swscale: take first/lastline over/underflows into account for MMX. Fixes crashes for extremely large resizes (several 100-fold). Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org	13 years ago
Ronald S. Bultje	b18f8cbf3d	Revert two swscale commits. Revert "swscale: update context offsets after removal of AlpMmxFilter." (commit `a95e3fa90b`) and Revert "swscale: Remove some write-only variables related to alpha handling." (commit `9d03cb9fc5`). They broke alpha handling - it's the evil inline asm that still uses that variable, so it's not truely write-only.	13 years ago
Ronald S. Bultje	1bab6f852c	swscale: make access to filter data conditional on filter type. Prevents crashes on 1-tap filter (unscaled). Also rename "bguf" argument to "vbuf", seems that was a typo.	13 years ago
Ronald S. Bultje	a95e3fa90b	swscale: update context offsets after removal of AlpMmxFilter.	13 years ago
Michael Niedermayer	e7dbfa59f2	swscale: enable some more SIMD functions. They no longer just segfault. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Carl Eugen Hoyos	186923758d	Fix compilation with old yasm that does not support AVX.	13 years ago
Diego Biurrun	9d03cb9fc5	swscale: Remove some write-only variables related to alpha handling.	13 years ago
Ronald S. Bultje	771bab7f57	swscale: fix crashes in yuv2yuvX on x86-32. They were introduced in an earlier commit that introduced use of named arguments. One cause was a typo, a second cause appears to be a bug in x264asm that I work around by not using named arguments.	13 years ago
Ronald S. Bultje	3e23badd83	swscale: convert yuv2yuvX() to using named arguments.	13 years ago
Ronald S. Bultje	8c433d8a03	swscale: rename "dstw" to "w" to prevent name collisions. "dstw" can collide with the word-version of the "dst" argument, causing all kind of weird stuff down the pipe.	13 years ago
Ronald S. Bultje	ef66a0ed2e	swscale: use named registers in yuv2yuv1_plane() place. Most of the function had been converted before, but I forgot this particular location.	13 years ago
Ronald S. Bultje	783487ae44	swscale: sign-extend integer function argument to qword on x86-64.	13 years ago
Ronald S. Bultje	ef1c785f11	swscale: make yuv2yuv1 use named registers.	13 years ago
Ronald S. Bultje	b7542dd3d7	swscale: fix V plane memory location in bilinear/unscaled RGB/YUYV case. Fixes bug 221. CC: libav-stable@libav.org	13 years ago
Ronald S. Bultje	7e4d9d5d45	win64: add a XMM clobber test configure option. This will be useful to test more aggressively for failures to mark XMM registers as clobbered in Win64 builds, and prevent regressions thereof. Based on a patch by Ramiro Polla <ramiro.polla@gmail.com>	13 years ago
Ronald S. Bultje	de53b9068a	swscale: implement MMX, SSE2 and AVX functions for RGB32 input.	13 years ago
Ronald S. Bultje	378c5ef9ae	swscale: enable dithering in MMX functions. This was accidently disabled. Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>	13 years ago
Ronald S. Bultje	212f161caa	swscale: make rgb24 function macros slightly smaller.	13 years ago
Ronald S. Bultje	b5d08c27c3	swscale: convert rgb/bgr24ToY/UV_mmx functions from inline asm to yasm. Also implement sse2/ssse3/avx versions.	13 years ago
Ronald S. Bultje	3b15a6d742	config.asm: change %ifdef directives to %if directives. This allows combining multiple conditionals in a single statement.	13 years ago
Michael Niedermayer	5a840f6364	x86/yuv2rgb_mmx: Remove yuv420 check. This check is not correct, the code supports more yuv variants. Fixes Ticket904 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Ronald S. Bultje	3c172a4106	swscale: change yuv2yuvX code to use cpuflag().	13 years ago
Carl Eugen Hoyos	ef3a19d595	Fix compilation with yasm-0.6.2	13 years ago
Michael Niedermayer	05577aafaa	sws: yuv2rgb asm, add memory clobber. This fixes dithering for rgb555le, it appears gcc had moved the setup of the variables after the asm or something like that. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Ronald S. Bultje	b14fa5572c	swscale: fix crash in fast_bilinear code when compiled with -mred-zone. Additional comments from Måns Rullgard have been integrated by Reinhard Tartler. Signed-off-by: Reinhard Tartler <siretart@tauware.de>	13 years ago
Oka Motofumi	cd44521625	swscale: specify register type. Fixes a compilation failure on win64. Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>	13 years ago
Ronald S. Bultje	2170a0e6ad	swscale: convert yuy2/uyvy/nv12/nv21ToY/UV from inline asm to yasm. Also implement SSE2/AVX variants.	13 years ago
Ronald S. Bultje	6ea64339c5	swscale: split scale.asm. scale.asm keeps horizontal scaling functions, whereas output.asm gets the vertical scaling/output functions.	13 years ago
Diego Biurrun	3c62a71486	swscale_mmx: drop no longer required parameters from VSCALEX macros	13 years ago
Diego Biurrun	52de07e1f1	swscale: Mark yuv2planeX_8_mmx as MMX2; it contains MMX2 instructions.	13 years ago
Mans Rullgard	373211d828	Remove extraneous semicolons These semicolons cause invalid empty top-level declarations. Signed-off-by: Mans Rullgard <mans@mansr.com>	13 years ago

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389 Commits (bdf01a9609e49ff602b38826420252356d98ba2a)