FFmpeg

Commit Graph

Author	SHA1	Message	Date
Luca Barbato	b2d4565422	avresample: Add avresample_get_out_samples Utility function to get the upper bound on the number of samples the resampler would output.	11 years ago
Janne Grunau	449511740f	build: handle library dependencies in configure Instead of setting FFLIBS in each library Makefile configure exports FFLIBS-$library in config.mak.	11 years ago
Janne Grunau	a24a252709	aarch64: NEON optimized FIR audio resampling Optimized for the default filter length 16. 30% faster opus silk decoding.	11 years ago
Janne Grunau	cae8df7875	lavr: define ResampleContext in resample.h Required for arch optimized resampling.	11 years ago
Janne Grunau	f4d5a2cc35	aarch64: NEON float to s16 audio conversion	11 years ago
Anton Khirnov	21d8f4da91	resample: remove an unneeded context variable	11 years ago
Anton Khirnov	ac976ed91e	lavr: allocate the resampling buffer with a positive size This fixes cases where very few input samples (fewer than needed for one output sample) are passed to lavr at the beginning. CC:libav-stable@libav.org	11 years ago
Anton Khirnov	f7c5fd8151	resample: implement flushing	11 years ago
Anton Khirnov	254c95cdd1	resample: split linear into its own function	11 years ago
Anton Khirnov	be394968c8	resample: add initial padding explicitly This simplifies the code, since we do not have to deal with a possibly negative source index anymore.	11 years ago
Anton Khirnov	eed752d61d	resample: drop useless abs() negative sample_index is handled in the block above.	11 years ago
Anton Khirnov	3c84f6b5d2	resample: reindent	11 years ago
Anton Khirnov	f20892eb67	resample: split the nearest neighbour path into a separate function pointer	11 years ago
Anton Khirnov	b9dea23766	resample: fix avresample_get_delay() return value The correct "next" input sample is not the first sample of the resampling buffer, but the center sample of the filter_length-sized block at the beginning. CC:libav-stable@libav.org	11 years ago
Diego Biurrun	01c5779f56	x86: Drop some unnecessary YASM ifdefs Dead code elimination is enough to avoid undefined references in these cases.	11 years ago
Diego Biurrun	aba70bb538	Add missing headers to make template files compile (more) standalone	11 years ago
Anton Khirnov	1db03a6864	lavr: return an error if a avresample_open() is called on an open context	11 years ago
Anton Khirnov	7e86c27b4e	lavr: add a function for checking whether AVAudioResampleContext is open	11 years ago
Tim Walker	76a75c523c	lavr: mix front center channel as indicated in the ATSC A/52 specification. When mixing 3 front channels into 2, the center channel is mixed into left and right with the center mix level, not -3dB.	11 years ago
Martin Storsjö	5bcbb516f2	arm: Add X() around all references to extern symbols Don't rely on the fact that an unprefixed label currently exists. Signed-off-by: Martin Storsjö <martin@martin.st>	11 years ago
Janne Grunau	fe96769bed	aarch64: port neon clobber test from arm	11 years ago
Martin Storsjö	99e2012523	x86/arm: Add clobber tests to libavresample Signed-off-by: Martin Storsjö <martin@martin.st>	11 years ago
Anton Khirnov	cc976a75df	audio_mix: print (SKIP) instead of 0.0 for matrix columns removed along with output zeroing	11 years ago
Anton Khirnov	fc6a3ef40d	audio_mix: fix zeroing output channels in certain cases Specifically, when the corresponding input channel exists and its matrix column is all-zero (which is necessary for zeroing the output), the matrix column must be removed from the matrix. This is not done currently, so the mixing code would end up using uninitialized pointers from stack. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind	11 years ago
Anton Khirnov	3d95d27376	audio_mix: initialize the data pointers to NULL This should make it easier to catch problems where some of those pointers are used uninitialized, since reading from NULL should always crash, while random numbers from stack can turn out to be valid pointers, so random memory may be silently overwritten.	11 years ago
Diego Biurrun	b83d1ee3b4	avutil: Move library version related macros to version.h This is a more sensible place for these macros.	11 years ago
Diego Biurrun	8f8bc92365	Add missing #includes for INT64_MAX and INT64_C	11 years ago
Justin Ruggles	211ca69b13	lavr: check that current_buffer is not NULL before using it Fixes a segfault during resampling when compiled with -DDEBUG. Fixes all fate-lavr-resample tests with -DDEBUG. CC:libav-stable@libav.org	11 years ago
Derek Buitenhuis	206895708e	x86inc: Remove our FMA4 support This is so we can sync to x264's version of FMA4 support. This partialy reverts commit `79687079a9`. Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>	11 years ago
Derek Buitenhuis	15748773bf	avresample/x86: Switch operand order for mulps With the forthcoming VEX instruction emulation, mulps must have only the third operand point to memory, as this is what vmulps expects. Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>	11 years ago
Anton Khirnov	df6737a55f	audio_mix: fix channel order in mix_1_to_2_fltp_flt_c CC:libav-stable@libav.org	11 years ago
Diego Biurrun	b5a138652f	Give less generic names to global library option arrays	12 years ago
Diego Biurrun	03039f4c8c	miscellaneous typo fixes	12 years ago
Diego Biurrun	3ac7fa81b2	Consistently use "cpu_flags" as variable/parameter name for CPU flags	12 years ago
Anton Khirnov	006ec64877	lavr doxy: add version.h to the lavr group	12 years ago
Diego Biurrun	e445647b4f	avresample: Add av_cold attributes to init functions missing them	12 years ago
Diego Biurrun	b6649ab503	cosmetics: Remove unnecessary extern keywords from function declarations	12 years ago
Justin Ruggles	b2eea615c0	lavr: allow setting internal_sample_fmt option by string	12 years ago
Justin Ruggles	50f4337a2f	lavr: Add "resample_cutoff" option as a duplicate of "cutoff" Avoids an option name conflict with libavcodec, which is needed in order to work properly with avconv.	12 years ago
Justin Ruggles	157542ebc1	lavr: fix mixing matrix reduction when normalization is disabled In some cases when an input contributes fully to the corresponding output, other inputs may also contribute to the same output. This is the case, for example, for the default 5.1 to stereo downmix matrix without normalization.	12 years ago
Justin Ruggles	600b4c973f	lavr: fix matrix reduction for upmixing in certain cases Do not skip an output if the corresponding input contributes to other output channels.	12 years ago
Justin Ruggles	a3735bb92a	lavr: cosmetics: reindent	12 years ago
Justin Ruggles	1647da89dd	lavr: make sure that the mix function is reset even if no mixing will be done If the matrix reduction ends up with no mixing matrix needed, we need to still reset the mix function accordingly and log the info to the user.	12 years ago
Justin Ruggles	646831e697	lavr: print out the mix matrix in ff_audio_mix_set_matrix() This will print the new matrix if it is set after initialization.	12 years ago
Justin Ruggles	b90632d596	lavr: always reset mix function names and pointers in mix_function_init() CC: libav-stable@libav.org	12 years ago
Justin Ruggles	f07ef2d9c9	lavr: call mix_function_init() in ff_audio_mix_set_matrix() This is needed if a custom matrix is set by the user after opening the AVAudioResampleContext because the matrix channel count can change if different mixing coefficients are used. CC:libav-stable@libav.org	12 years ago
Justin Ruggles	a6a3164b13	x86: lavr: add SSE2/AVX dither_int_to_float()	12 years ago
Justin Ruggles	1fb8f6a44f	x86: lavr: add SSE2 quantize() for dithering	12 years ago
Justin Ruggles	7ff3fd7ae4	lavr: log channel conversion description for any-to-any functions	12 years ago
Justin Ruggles	4164b0e8d3	lavr: mix: reduce the mixing matrix when possible If the matrix results in an output channel not getting a contribution from any input channel and the corresponding input channel does not contribute to any outputs, we can skip the channel during mixing and silence it after mixing. If the matrix results in an input channel not contributing to any output channels and it is not in the output mix, or if the input channel only contributes fully to the same output channel, we can skip the channel during mixing. If the matrix results in an output channel only getting full contribution from the corresponding input channel and that input channel does not contribute to any other output channels, we can skip the channel during mixing.	12 years ago

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142 Commits (383136264ef40452efd86cafb2d7221cd3830b3d)