FFmpeg

Commit Graph

Author	SHA1	Message	Date
Ramiro Polla	8744764a4c	swscale/x86/yuv2rgb: add ssse3 yuv42{0,2}p -> gbrp unscaled colorspace converters Note: this implementation is limited to x86_64 due to general purpose register pressure. checkasm --bench on an Intel(R) Core(TM) i5-5300U CPU @ 2.30GHz: yuv420p_gbrp_8_c: 118.5 yuv420p_gbrp_8_ssse3: 93.3 yuv420p_gbrp_128_c: 1068.3 yuv420p_gbrp_128_ssse3: 319.3 yuv420p_gbrp_1080_c: 8841.8 yuv420p_gbrp_1080_ssse3: 2211.8 yuv420p_gbrp_1920_c: 15903.8 yuv420p_gbrp_1920_ssse3: 3814.3 yuv422p_gbrp_8_c: 144.8 yuv422p_gbrp_8_ssse3: 93.8 yuv422p_gbrp_128_c: 1395.8 yuv422p_gbrp_128_ssse3: 313.0 yuv422p_gbrp_1080_c: 11551.5 yuv422p_gbrp_1080_ssse3: 2240.8 yuv422p_gbrp_1920_c: 20585.3 yuv422p_gbrp_1920_ssse3: 5249.5 yuva420p_gbrp_8_c: 117.5 yuva420p_gbrp_8_ssse3: 92.0 yuva420p_gbrp_128_c: 1593.0 yuva420p_gbrp_128_ssse3: 319.3 yuva420p_gbrp_1080_c: 8694.5 yuva420p_gbrp_1080_ssse3: 2186.0 yuva420p_gbrp_1920_c: 15946.5 yuva420p_gbrp_1920_ssse3: 3805.3	4 months ago
Ramiro Polla	61e851381f	swscale/yuv2rgb/x86: remove mmx/mmxext yuv2rgb functions These functions are either slower or barely faster than the C LUT yuv2rgb code.	6 months ago
Ramiro Polla	5939f7228a	libswscale/x86/yuv_2_rgb: fix some comments	7 months ago
Lynne	bbe95f7353	x86: replace explicit REP_RETs with RETs From x86inc: > On AMD cpus <=K10, an ordinary ret is slow if it immediately follows either > a branch or a branch target. So switch to a 2-byte form of ret in that case. > We can automatically detect "follows a branch", but not a branch target. > (SSSE3 is a sufficient condition to know that your cpu doesn't have this problem.) x86inc can automatically determine whether to use REP_RET rather than REP in most of these cases, so impact is minimal. Additionally, a few REP_RETs were used unnecessary, despite the return being nowhere near a branch. The only CPUs affected were AMD K10s, made between 2007 and 2011, 16 years ago and 12 years ago, respectively. In the future, everyone involved with x86inc should consider dropping REP_RETs altogether.	2 years ago
Andreas Rheinhardt	2831837182	swscale/x86/yuv2rgb: Remove obsolete MMX functions x64 always has MMX, MMXEXT, SSE and SSE2 and this means that some functions for MMX, MMXEXT and 3dnow are always overridden by other functions (unless one e.g. explicitly disables SSE2) for x64. So given that the only systems that benefit from these functions are truely ancient 32bit x86s they are removed. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	3 years ago
Vardan Margaryan	73302aa193	swscale/x86/yuv_2_rgb: fix access to memory past the frame data in yuv to rgb conversion Y, U, V data is loaded at the end of the current iteration for the next iteration. It results in memory access past the frame data on the last iteration (that data is never used after the loading). So load data at the start of the iteration, so that only useful data is loaded. Signed-off-by: Vardan Margaryan <v.t.margaryan@gmail.com> Signed-off-by: Anton Khirnov <anton@khirnov.net>	3 years ago
Marton Balint	993429cfb4	swscale/x86/yuv2rgb: fix crashes when loading alpha from unaligned buffers Regression since `fc6a5883d6` on SSSE3 enabled CPUs. Fixes ticket #8955. Signed-off-by: Marton Balint <cus@passwd.hu>	4 years ago
James Almer	ba3e771a42	x86/yuv2rgb: fix crashes when storing data on unaligned buffers Regression since `fc6a5883d6` on SSSE3 enabled CPUs. Fixes ticket #8747 Signed-off-by: James Almer <jamrial@gmail.com>	5 years ago
Ting Fu	828f7db5d9	libswscale/x86/yuv2rgb: Fix Segmentation Fault when load unaligned data Fixes ticket #8532 Signed-off-by: Ting Fu <ting.fu@intel.com>	5 years ago
Ting Fu	fc6a5883d6	libswscale/x86/yuv2rgb: add ssse3 version Tested using this command: /ffmpeg -pix_fmt yuv420p -s 19201080 -i ArashRawYuv420.yuv \ -vcodec rawvideo -s 19201080 -pix_fmt rgb24 -f null /dev/null The fps increase from 389 to 640 on Intel(R) Core(TM) i7-8700K CPU @ 3.70GHz Signed-off-by: Ting Fu <ting.fu@intel.com>	5 years ago
Ting Fu	e934194b6a	libswscale/x86/yuv2rgb: Change inline assembly into nasm code The original inline assembly and nasm code have the same fps when called by command. NASM code almost has no impact on the perfromance. Signed-off-by: Ting Fu <ting.fu@intel.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	5 years ago

11 Commits (70a16a18ca03ee0c7e92fcab51334392c725e7da)