FFmpeg

Commit Graph

Author	SHA1	Message	Date
James Almer	567c67c6c8	avcodec/ac3dsp: make len a size_t in float_to_fixed24 Should simplify asm implementations, and prevent UB on at least win64. Signed-off-by: James Almer <jamrial@gmail.com>	1 year ago
Rémi Denis-Courmont	89c10d8d20	lavc/ac3: add R-V Zbb extract_exponents	1 year ago
Andreas Rheinhardt	76d8f0dd14	avcodec/ac3dsp: Remove unused parameter Forgotten in `fd98594a88`. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	2 years ago
Andreas Rheinhardt	40e6575aa3	all: Replace if (ARCH_FOO) checks by #if ARCH_FOO This is more spec-compliant because it does not rely on dead-code elimination by the compiler. Especially MSVC has problems with this, as can be seen in https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/296373.html or https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/297022.html This commit does not eliminate every instance where we rely on dead code elimination: It only tackles branching to the initialization of arch-specific dsp code, not e.g. all uses of CONFIG_ and HAVE_ checks. But maybe it is already enough to compile FFmpeg with MSVC with whole-programm-optimizations enabled (if one does not disable too many components). Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	2 years ago
Andreas Rheinhardt	104abea646	avcodec/ac3: Move non-(de\|en)coder-only parts out of ac3.h Move AC3HeaderInfo into ac3_parser_internal.h and the rest into a new header ac3defs.h. This also breaks an include cycle of ac3.h and ac3tab.h (the latter now only needs ac3defs.h). Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	3 years ago
Andreas Rheinhardt	25c8507818	Remove/replace some unnecessary avcodec.h inclusions Also remove other unnecessary headers and include headers directly while at it. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	3 years ago
Lynne	9e05421dbe	ac3enc_fixed: drop unnecessary fixed-point DSP code	4 years ago
Anton Khirnov	e15371061d	lavu/mem: move the DECLARE_ALIGNED macro family to mem_internal on next+1 bump They are not properly namespaced and not intended for public use.	4 years ago
James Almer	91ccd38c0b	avcodec/ac3dsp: add special-case handling for the C downmix_fixed function Reviewed-by: Michael Niedermayer <michael@niedermayer.cc> Signed-off-by: James Almer <jamrial@gmail.com>	8 years ago
Justin Ruggles	b57e38f52c	ac3dsp: x86: Replace inline asm for in-decoder downmixing with standalone asm Adds a wrapper function for downmixing which detects channel count changes and updates the selected downmix function accordingly. Simplification and porting to current x86inc infrastructure by Diego Biurrun. Signed-off-by: Diego Biurrun <diego@biurrun.de>	8 years ago
Justin Ruggles	a9ba59591e	ac3dsp: Add some special-case handling for the C downmix function This is about 200% faster for in-decoder downmixing of 5.0 and 5.1 content. Signed-off-by: Diego Biurrun <diego@biurrun.de>	8 years ago
Justin Ruggles	43717469f9	ac3dsp: Reverse matrix in/out order in downmix() Also use (float *) instead of (float ()[2]). This matches the matrix layout in libavresample so we can reuse assembly code between the two. Signed-off-by: Diego Biurrun <diego@biurrun.de>	8 years ago
Diego Biurrun	0f40c90984	Drop pointless assert.h #includes	9 years ago
Peter Meerwald	9abc80f1ed	libavcodec: Make use of av_clip functions Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Luca Barbato <lu_zero@gentoo.org>	10 years ago
Nedeljko Babic	696e34a6e1	libavcodec: Implementation of AC3 fixedpoint decoder Signed-off-by: Nedeljko Babic <nbabic@mips.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Diego Biurrun	831a118078	Update dsputil- and SIMD-related comments to match reality more closely	11 years ago
Diego Biurrun	4958f35a2e	dsputil: Move apply_window_int16 to ac3dsp The (optimized) functions are used nowhere else.	11 years ago
Mans Rullgard	30b3916425	ac3dec: make downmix() take array of pointers to channel data	12 years ago
Bojan Zivkovic	a74ae4691a	mips: Optimization of AC3 FP encoder and EAC3 FP decoder Signed-off-by: Bojan Zivkovic <bojan@mips.com> Reveiwed-by: Vitor Sessak <vitor1001@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Janne Grunau	f101eab1be	x86: call most of the x86 dsp init functions under if (ARCH_X86) Rename the called dsp init functions to *_init_x86.	12 years ago
Mans Rullgard	97cb9236cf	ac3: move ac3_downmix() from dsputil to ac3dsp Signed-off-by: Mans Rullgard <mans@mansr.com>	12 years ago
Mans Rullgard	034b03e7a0	ac3: Do not read past the end of ff_ac3_band_start_tab. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Alex Converse <alex.converse@gmail.com>	13 years ago
Mans Rullgard	f507a9fe00	ac3enc: move inner loop of compute_rematrixing_strategy to ac3dsp	14 years ago
Justin Ruggles	8b7b2d6aae	ac3dsp: simplify extract_exponents() now that it does not need to do clipping.	14 years ago
Justin Ruggles	dc0ad40de2	ac3dsp: fix loop condition in ac3_update_bap_counts_c()	14 years ago
Justin Ruggles	6ca23db9cc	ac3enc: modify mantissa bit counting to keep bap counts for all values of bap instead of just 0 to 4. This does all the actual bit counting as a final step.	14 years ago
Justin Ruggles	63b1866ae1	ac3enc: clip large coefficient values and negative exponents rather than using av_assert2().	14 years ago
Mans Rullgard	2310ee4b1c	ac3enc: move extract_exponents inner loop to ac3dsp Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Mans Rullgard	52fd16a264	ac3enc: move compute_mantissa_size() to ac3dsp Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Mans Rullgard	6d9f52b2cd	ac3: move ff_ac3_bit_alloc_calc_bap to ac3dsp Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Mans Rullgard	f4855a904e	ac3enc: NEON optimised ac3_max_msb_abs_int16 and ac3_exponent_min	14 years ago
Mans Rullgard	2912e87a6c	Replace FFmpeg with Libav in licence headers Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	0f999cfddb	ac3enc: add float_to_fixed24() with x86-optimized versions to AC3DSPContext and use in scale_coefficients() for the floating-point AC-3 encoder.	14 years ago
Michael Niedermayer	f7a5e7791d	Revert "ac3enc: add SIMD-optimized shifting functions for use with the fixed-point AC3 encoder" This reverts commit `cc4d3dd3e2`. revert at authors request due to better impementation being available Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	14 years ago
Justin Ruggles	f1efbca5e9	ac3enc: add SIMD-optimized shifting functions for use with the fixed-point AC3 encoder.	14 years ago
Justin Ruggles	cc4d3dd3e2	ac3enc: add SIMD-optimized shifting functions for use with the fixed-point AC3 encoder Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	14 years ago
Justin Ruggles	7539a1fee2	ac3enc: Add x86-optimized function to speed up log2_tab(). AC3DSPContext.ac3_max_msb_abs_int16() finds the maximum MSB of the absolute value of each element in an array of int16_t. Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com> (cherry picked from commit `fbb6b49dab`)	14 years ago
Justin Ruggles	fbb6b49dab	ac3enc: Add x86-optimized function to speed up log2_tab(). AC3DSPContext.ac3_max_msb_abs_int16() finds the maximum MSB of the absolute value of each element in an array of int16_t. Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>	14 years ago
Justin Ruggles	a30ac54a19	Add x86-optimized versions of exponent_min(). Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com> (cherry picked from commit `dda3f0ef48`)	14 years ago
Diego Elio Pettenò	e7e2df27f8	Add ff_ prefix to data symbols of encoders, decoders, hwaccel, parsers, bsf. None of these symbols should be accessed directly, so declare them as hidden. Signed-off-by: Mans Rullgard <mans@mansr.com> (cherry picked from commit `d36beb3f69`)	14 years ago
Diego Elio Pettenò	d36beb3f69	Add ff_ prefix to data symbols of encoders, decoders, hwaccel, parsers, bsf. None of these symbols should be accessed directly, so declare them as hidden. Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Diego Biurrun	2d62158091	Replace '\0 bytes' by 'NULL bytes' in Doxygen comments. Doxygen mistakes the \ for the start of a Doxygen command. Originally committed as revision 23994 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Alex Converse	c2341b8596	Add a chomp BSF to consume zero padding at the end of a packet. Originally committed as revision 23196 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Aurelien Jacobs	4231f05b28	VP3 parser can also handle VP6 without any changes. Originally committed as revision 13990 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Michael Niedermayer	0c587a4ea8	VP3 & Theora parser to extract keyframe flags. This parser is not able to split random bitstream pieces. Originally committed as revision 13986 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Diego Biurrun	5b21bdabe4	Add FFMPEG_ prefix to all multiple inclusion guards. Originally committed as revision 10765 to svn://svn.ffmpeg.org/ffmpeg/trunk	17 years ago
Guillaume Poirier	efb775777f	add a comment to indicate which #endif belong to which #define Originally committed as revision 9356 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Måns Rullgård	699b3f99d0	add multiple inclusion guards to headers Originally committed as revision 9345 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Måns Rullgård	99545457bf	include all prerequisites in header files Originally committed as revision 9344 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago
Diego Biurrun	c33d98141d	Move H.263 parser to its own file. Originally committed as revision 8934 to svn://svn.ffmpeg.org/ffmpeg/trunk	18 years ago

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54 Commits (0f01581ccd757f14ec349eba5d19c19b158d5957)