Chiebot-Mirror/FFmpeg - FFmpeg - Gitea: Git with a cup of tea

Author	SHA1	Message	Date
Ramiro Polla	384fe39623	swscale/range_convert: fix mpeg ranges in yuv range conversion for non-8-bit pixel formats There is an issue with the constants used in YUV to YUV range conversion, where the upper bound is not respected when converting to mpeg range. With this commit, the constants are calculated at runtime, depending on the bit depth. This approach also allows us to more easily understand how the constants are derived. For bit depths <= 14, the number of fixed point bits has been set to 14 for all conversions, to simplify the code. For bit depths > 14, the number of fixed points bits has been raised and set to 18, to allow for the conversion to be accurate enough for the mpeg range to be respected. The convert functions now take the conversion constants (coeff and offset) as function arguments. For bit depths <= 14, coeff is unsigned 16-bit and offset is 32-bit. For bit depths > 14, coeff is unsigned 32-bit and offset is 64-bit. x86_64: chrRangeFromJpeg8_1920_c: 2127.4 2125.0 (1.00x) chrRangeFromJpeg16_1920_c: 2325.2 2127.2 (1.09x) chrRangeToJpeg8_1920_c: 3166.9 3168.7 (1.00x) chrRangeToJpeg16_1920_c: 2152.4 3164.8 (0.68x) lumRangeFromJpeg8_1920_c: 1263.0 1302.5 (0.97x) lumRangeFromJpeg16_1920_c: 1080.5 1299.2 (0.83x) lumRangeToJpeg8_1920_c: 1886.8 2112.2 (0.89x) lumRangeToJpeg16_1920_c: 1077.0 1906.5 (0.56x) aarch64 A55: chrRangeFromJpeg8_1920_c: 28835.2 28835.6 (1.00x) chrRangeFromJpeg16_1920_c: 28839.8 32680.8 (0.88x) chrRangeToJpeg8_1920_c: 23074.7 23075.4 (1.00x) chrRangeToJpeg16_1920_c: 17318.9 24996.0 (0.69x) lumRangeFromJpeg8_1920_c: 15389.7 15384.5 (1.00x) lumRangeFromJpeg16_1920_c: 15388.2 17306.7 (0.89x) lumRangeToJpeg8_1920_c: 19227.8 19226.6 (1.00x) lumRangeToJpeg16_1920_c: 15387.0 21146.3 (0.73x) aarch64 A76: chrRangeFromJpeg8_1920_c: 6324.4 6268.1 (1.01x) chrRangeFromJpeg16_1920_c: 6339.9 11521.5 (0.55x) chrRangeToJpeg8_1920_c: 9656.0 9612.8 (1.00x) chrRangeToJpeg16_1920_c: 6340.4 11651.8 (0.54x) lumRangeFromJpeg8_1920_c: 4422.0 4420.8 (1.00x) lumRangeFromJpeg16_1920_c: 4420.9 5762.0 (0.77x) lumRangeToJpeg8_1920_c: 5949.1 5977.5 (1.00x) lumRangeToJpeg16_1920_c: 4446.8 5946.2 (0.75x) NOTE: all simd optimizations for range_convert have been disabled. they will be re-enabled when they are fixed for each architecture. NOTE2: the same issue still exists in rgb2yuv conversions, which is not addressed in this commit.	2 months ago
Niklas Haas	67adb30322	swscale: rename SwsContext to SwsInternal And preserve the public SwsContext as separate name. The motivation here is that I want to turn SwsContext into a public struct, while keeping the internal implementation hidden. Additionally, I also want to be able to use multiple internal implementations, e.g. for GPU devices. This commit does not include any functional changes. For the most part, it is a simple rename. The only complications arise from the public facing API functions, which preserve their current type (and hence require an additional unwrapping step internally), and the checkasm test framework, which directly accesses SwsInternal. For consistency, the affected functions that need to maintain a distionction have generally been changed to refer to the SwsContext as sws, and the SwsInternal as c. In an upcoming commit, I will provide a backing definition for the public SwsContext, and update `sws_internal()` to dereference the internal struct instead of merely casting it. Sponsored-by: Sovereign Tech Fund Signed-off-by: Niklas Haas <git@haasn.dev>	4 months ago
Andreas Rheinhardt	790f793844	avutil/common: Don't auto-include mem.h There are lots of files that don't need it: The number of object files that actually need it went down from 2011 to 884 here. Keep it for external users in order to not cause breakages. Also improve the other headers a bit while just at it. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	11 months ago
Timo Rothenpieler	f2de911818	swscale: add opaque parameter to input functions	3 years ago
Derek Buitenhuis	21f9468402	avutil: Rename FF_CEIL_COMPAT to AV_CEIL_COMPAT 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>	9 years ago
Michael Niedermayer	e06403331c	swscale: Move Contexts used only in hscale.c into it Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	9 years ago
Pedro Arthur	0f3687d6fb	swscale: add license headers and copyrights Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	10 years ago
Pedro Arthur	e0a3173a94	swscale: refactor horizontal scaling + split color conversion from scaling - disabled gamma correction, until it's refactored too Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>	10 years ago