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23 Commits

Author SHA1 Message Date
Justin Ruggles
fbc0b86599 lavr: Do not change the sample format for mono audio 
This treats mono as planar internally within libavresample rather
than changing the sample format.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
 2014-08-03 23:13:26 +02:00
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.
 2014-05-28 22:04:56 +02:00
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
 2014-04-13 11:21:20 +02:00
Anton Khirnov
1db03a6864 lavr: return an error if a avresample_open() is called on an open context 2014-02-22 20:53:09 +01:00
Anton Khirnov
7e86c27b4e lavr: add a function for checking whether AVAudioResampleContext is open 2014-02-22 20:52:36 +01:00
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
 2013-10-27 15:07:10 -04:00
Justin Ruggles
074a00d192 lavr: add a public function for setting a custom channel map 
This allows reordering, duplication, and silencing of input channels.
 2013-01-07 21:49:06 -05:00
Justin Ruggles
4d68269d58 lavr: typedef internal structs in internal.h 
Simplifies header dependencies by not including all other internal headers
in internal.h.
 2013-01-07 21:49:05 -05:00
Justin Ruggles
b2fe6756e3 lavr: add option for dithering during sample format conversion to s16 2012-12-19 18:52:54 -05:00
Justin Ruggles
42b5688d5e lavr: fix segfault due to overlooked change needed in 14758e3 
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
 2012-12-12 09:09:00 +01:00
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.
 2012-12-11 14:00:32 -05:00
Justin Ruggles
1d86aa8b0f lavr: do not pass consumed samples as a parameter to ff_audio_resample() 
Since the resampler handles buffering of unconsumed samples internally, the
caller does not need this information.
 2012-11-27 16:49:19 -05:00
Justin Ruggles
7f534d11ed lavr: do not pass sample count as a parameter to ff_audio_convert() 
It will always be the number of samples in the input buffer, so just use that
directly instead of passing it as a separate parameter.
 2012-11-27 16:49:18 -05:00
Justin Ruggles
02738792c5 lavr: fix the decision for writing directly to the output buffer 
If there are any samples remaining in the output fifo from previous conversion
calls, we have to output those samples first instead of doing direct output
of the current samples.
 2012-11-17 20:09:40 -05:00
Anton Khirnov
e7ba5b1de0 lavr: change the type of the data buffers to uint8_t**. 
This is more consistent with what the rest of Libav does.

This breaks API.
 2012-10-05 13:49:44 +02:00
Martin Storsjö
1d9c2dc89a Don't include common.h from avutil.h 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-08-15 22:32:06 +03:00
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.
 2012-08-04 10:28:22 -04:00
Justin Ruggles
2f096bb10e lavr: add x86-optimized mixing functions 
Adds optimized functions for mixing 3 through 8 input channels to 1 and 2
output channels in fltp or s16p format with flt coeffs.
 2012-07-27 11:25:48 -04:00
Justin Ruggles
6410397600 lavr: resampling: add support for s32p, fltp, and dblp internal sample formats 
Based partially on implementation by Michael Niedermayer <michaelni@gmx.at> in
libswresample in FFmpeg. See commits:
7f1ae79d38c4edba9dbd31d7bf797e525298ac55
24ab1abfb6d55bf330022df4b10d7aec80b3f116
 2012-07-08 15:22:11 -04:00
Justin Ruggles
8ca08066fc lavr: Use AV_SAMPLE_FMT_NONE to auto-select the internal sample format 
Also make this the default value.
 2012-07-08 15:22:11 -04:00
Anton Khirnov
9684341346 lavr: do not try to copy to uninitialized output audio data. 
This would happen at least when lavr is used as a fifo with no
conversion.
 2012-05-09 17:38:23 +02:00
Anton Khirnov
0982b0a431 lavr: make avresample_read() with NULL output discard samples. 2012-05-09 17:37:47 +02:00
Justin Ruggles
c8af852b97 Add libavresample 
This is a new library for audio sample format, channel layout, and sample rate
conversion.
 2012-04-24 21:28:27 -04:00