FFmpeg

Commit Graph

Author	SHA1	Message	Date
Diego Biurrun	999484c9fb	swscale: K&R formatting cosmetics for code examples	13 years ago
Diego Biurrun	83890c66c4	swscale: K&R reformatting cosmetics for header files	13 years ago
Ronald S. Bultje	2ba65879b5	swscale: remove unused U/V arguments from yuv2rgb_write(). Also document the function somewhat.	13 years ago
Diego Biurrun	3d72a6f19e	swscale: Use standard multiple inclusion guards in ppc/ header files.	13 years ago
Ronald S. Bultje	6b3995ccd1	swscale: remove obsolete comment.	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
Ronald S. Bultje	9ea3501d87	swscale: don't show full-chroma-int warning for non-RGB output. Non-RGB output always uses full chroma interpolation.	13 years ago
Ronald S. Bultje	f910dbcdb0	swscale: add MMX files to MMX-OBJS instead of OBJS.	13 years ago
Diego Biurrun	44b0edda3f	Drop some pointless void* return value casts from av_malloc() invocations.	13 years ago
Janne Grunau	6e9bb5aa3e	swscale: prevent invalid writes in packed_16bpc_bswap Writes past the end of the destination buffer were occuring when its stride was smaller than the stride of the source. Fixes Bug #183.	13 years ago
Anton Khirnov	131609dc2a	sws: readd PAL8 to isPacked() Fixes PAL8 to YUV conversion.	13 years ago
Nathan Adil Maxson	7b3894bee9	swscale: fix formatting and indentation of unscaled conversion routines. Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>	13 years ago
Ronald S. Bultje	d49352c7cc	swscale: fix overflows in vertical scaling at top/bottom edges. This fixes integer multiplication overflows in RGB48 output (vertical) scaling as detected by IOC. What happens is that for certain types of filters (lanczos, spline, bicubic), the intermediate sum of coefficients in the middle of a filter can be larger than the fixed-point equivalent of 1.0, even if the final sum is 1.0. This is fine and we support that. However, at frame edges, initFilter() will merge the coefficients for the off-screen pixels into the top or bottom pixel, such as to emulate edge extension. This means that suddenly, a single coefficient can be larger than the fixed-point equivalent of 1.0, which the vertical scaling routines do not support. Therefore, remove the merging of coefficients for edges for the vertical scaling filter, and instead add edge detection to the scaler itself so that it copies the pointers (not data) for the edges (i.e. it uses line[0] for line[-1] as well), so that a single coefficient is never larger than the fixed-point equivalent of 1.0.	13 years ago
Ronald S. Bultje	72dafea0fc	swscale: fix overflow in gray16 vertical scaling. This fixes the same overflow as in the RGB48/16-bit YUV scaling; some filters can overflow both negatively and positively (e.g. spline/lanczos), so we bias a signed integer so it's "half signed" and "half unsigned", and can cover overflows in both directions while maintaining full 31-bit depth. Signed-off-by: Mans Rullgard <mans@mansr.com>	13 years ago
Mans Rullgard	77d88b872d	swscale: fix integer overflows in RGB pixel writing. We're shifting individual components (8-bit, unsigned) left by 24, so making them unsigned should give the same results without the overflow. Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>	13 years ago
Janne Grunau	b4dc68803b	swscale: add endian conversion for RGB555 and RGB444 pixel formats Add a macro to shorten the if condition.	13 years ago
Ronald S. Bultje	be1bafc303	swscale: fix overflows in output of RGB48 pixels. For certain types of filters where the intermediate sum of coefficients can go above the fixed-point equivalent of 1.0 in the middle of a filter, the sum of a 31-bit calculation can overflow in both directions and can thus not be represented in a 32-bit signed or unsigned integer. To work around this, we subtract 0x40000000 from a signed integer base, so that we're halfway signed/unsigned, which makes it fit even if it overflows. After the filter finishes, we add the scaled bias back after a shift. We use the same trick for 16-bit bpc YUV output routines. Signed-off-by: Mans Rullgard <mans@mansr.com>	13 years ago
Janne Grunau	ed46a3d842	swscale: add rgb565 endianess conversion	13 years ago
Ronald S. Bultje	4391805916	swscale: fix overflows in RGB rounding constants. Signed-off-by: Mans Rullgard <mans@mansr.com>	13 years ago
Janne Grunau	72cb904453	swscale: add unscaled packed 16 bit per component endianess conversion	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	878dda5db1	build: move inclusion of subdir.mak to main subdir loop Signed-off-by: Mans Rullgard <mans@mansr.com>	13 years ago
Diego Biurrun	58c42af722	doxygen: misc consistency, spelling and wording fixes	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
Reinhard Tartler	5089ce1b5a	swscale: #include "libavutil/mathematics.h" this file uses the M_PI macro since `4e74187db2`, so include the correct header directly. Signed-off-by: Reinhard Tartler <siretart@tauware.de>	13 years ago
Mans Rullgard	7c5ce99bd9	swscale: fix signed overflow in yuv2mono_X_c_template As old bits are shifted out of the accumulator, they cause signed overflows when they reach the end. Making the variable unsigned fixes this. Signed-off-by: Mans Rullgard <mans@mansr.com>	13 years ago
Martin Storsjö	f32dfad9dc	swscale: Readd #define _SVID_SOURCE This was removed erroneously in `046f081b46`. This define still is necessary for getting MAP_ANONYMOUS defined on linux/glibc, despite the define reshuffling done in that commit. Without MAP_ANONYMOUS defined, the mprotect calls for setting the generated mmx2 scaler code pages executable are left out, causing crashes if that codepath is chosen. This patch fixes scaling from 192x144 to 320x240 with -sws_flags fast_bilinear, which crashes on linux at the moment. Signed-off-by: Martin Storsjö <martin@martin.st>	13 years ago
Ronald S. Bultje	f7f1835258	swscale: fix failing fate tests. isGray() is left as a FIXME for later.	13 years ago
Ronald S. Bultje	185655c601	swscale: add support for planar RGB input.	13 years ago
Ronald S. Bultje	6b0768e202	Clean up swscale pixfmt macros using av_pix_fmt_descriptors[].	13 years ago
John Stebbins	09d243ddd0	swscale: Fix stack alignment for SSE Although gcc guarantees 16 byte stack alignment, threads under WinXP don't appear to be guaranteed to start stack aligned. So fix the alignment. Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>	13 years ago
Ronald S. Bultje	8283f90a52	swscale: handle unaligned buffers in yuv2plane1 The issue had been introduced in `c435653627` Signed-off-by: Luca Barbato <lu_zero@gentoo.org>	13 years ago
Sean McGovern	124e56454d	swscale: add padding to conversion buffer. Altivec does unaligned reads from this buffer in hscale_altivec_real(), and can thus read up to 16 bytes beyond the end of the buffer. Therefore, add an extra 16 bytes of padding at the end of the conversion buffer. This fixes fate-lavfi-pixfmts_scale on AltiVec-enabled builds under valgrind. Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>	13 years ago
Ronald S. Bultje	c435653627	swscale: write yuv2plane1 MMX/SSE2/SSE4/AVX functions.	13 years ago
Ronald S. Bultje	1deb08fcb6	swscale: align vertical filtersize by 2 on x86. The vertical scaler handles 2 rows at a time and thus requires alignment by 2, or else it'll read invalid memory and result in corrupt output.	13 years ago
Ronald S. Bultje	9e66b892e8	swscale: add missing colons to x86 assembly yuv2planeX. This fixes assembling using "nasm".	13 years ago
Ronald S. Bultje	f48b12e0a6	swscale: update altivec yuv2planeX asm to new per-plane API.	13 years ago
Ronald S. Bultje	6cacecdca3	swscale: make yuv2yuvX_10_sse2/avx 8/9/16-bits aware. Also implement MMX/MMX2 versions and SSE4 versions.	13 years ago
Kieran Kunhya	7fbbf95293	yuv2planeX10 SIMD Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>	13 years ago
Ronald S. Bultje	109f62e8f8	swscale: decide whether to use yuv2plane1/X on a per-plane basis.	13 years ago
Ronald S. Bultje	f99654d470	swscale: reintroduce full precision in 16-bit output.	13 years ago
Kieran Kunhya	ff7913aef1	Split up yuv2yuvX functions Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>	13 years ago
Kieran Kunhya	34e8d147b3	Split out yuv2yuv1 luma and chroma in order to make them generic DSP functions Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>	13 years ago
Mans Rullgard	41ac093f7e	swscale: fix signed shift overflows in ff_yuv2rgb_c_init_tables() Signed-off-by: Mans Rullgard <mans@mansr.com>	13 years ago
Ronald S. Bultje	dc49bf1270	sws/pixfmt/pixdesc: add support for yuv420p9le/be.	13 years ago
Ronald S. Bultje	8305041e13	swscale: prevent overflow in coefficient calculation.	13 years ago
Ronald Bultje	d1d421cbc0	swscale: prevent overflow during initialization Signed-off-by: Janne Grunau <janne-libav@jannau.net>	13 years ago
Anton Khirnov	145f741e11	AVOptions: rename FF_OPT_TYPE_* => AV_OPT_TYPE_*	13 years ago
Anton Khirnov	04de1569cd	sws: support yuv444p9/10 output.	13 years ago

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1114 Commits (7b44061f4be1075eefbc2eec649f38dd0dbfcc82)