FFmpeg

Commit Graph

Author	SHA1	Message	Date
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	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
Hendrik Leppkes	0cf3505930	avresample: use valid log context in mixing functions Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>	12 years ago
Justin Ruggles	230acdde26	lavr: move AudioMix struct definition to audio_mix.c	12 years ago
Justin Ruggles	14758e3211	lavr: temporarily store custom matrix in AVAudioResampleContext This allows AudioMix to be treated the same way as other conversion contexts and removes the requirement to allocate it at the same time as the AVAudioResampleContext. The current matrix get/set functions are split between the public interface and AudioMix private functions.	12 years ago
Martin Storsjö	1d9c2dc89a	Don't include common.h from avutil.h Signed-off-by: Martin Storsjö <martin@martin.st>	13 years ago
John Stebbins	4cf4028331	libavresample: add mix level normalization option Provides an option to disable mix level normalization Signed-off-by: Diego Biurrun <diego@biurrun.de>	13 years ago
Justin Ruggles	8821ae649e	lavr: fix handling of custom mix matrices Adds some validation for changing parameters after setting the matrix and fixes a bug in the conversion path setup.	13 years ago
Justin Ruggles	db0e7bd0bd	lavr: mix: validate internal sample format in ff_audio_mix_init()	13 years ago
John Stebbins	3971be0eb5	Add Dolby/DPLII downmix support to libavresample Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>	13 years ago
Justin Ruggles	8dfc122719	lavr: add C functions for mixing 2 to 1 channels with s16p format	13 years ago
Justin Ruggles	4010d724e1	lavr: use 8.8 instead of 10.6 as the 16-bit fixed-point mixing coeff type	13 years ago
Justin Ruggles	c8af852b97	Add libavresample This is a new library for audio sample format, channel layout, and sample rate conversion.	13 years ago

20 Commits (088f38a4f9f54bb923405c67c9e72d96d90aa284)