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153 Commits

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.
 2013-02-12 13:41:13 -05:00
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.
 2013-02-12 13:41:13 -05:00
Justin Ruggles
a3735bb92a lavr: cosmetics: reindent 2013-02-12 13:41:13 -05:00
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.
 2013-02-12 13:41:09 -05:00
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.
 2013-02-12 13:35:04 -05:00
Justin Ruggles
b90632d596 lavr: always reset mix function names and pointers in mix_function_init() 
CC: libav-stable@libav.org
 2013-01-17 19:27:01 -05:00
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
 2013-01-17 19:27:01 -05:00
Justin Ruggles
a6a3164b13 x86: lavr: add SSE2/AVX dither_int_to_float() 2013-01-08 14:52:43 -05:00
Justin Ruggles
1fb8f6a44f x86: lavr: add SSE2 quantize() for dithering 2013-01-08 14:52:43 -05:00
Justin Ruggles
7ff3fd7ae4 lavr: log channel conversion description for any-to-any functions 2013-01-07 21:49:07 -05:00
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.
 2013-01-07 21:49:06 -05:00
Justin Ruggles
1ccf82cfd8 lavr: cosmetics: reindent 2013-01-07 21:49:06 -05:00
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
95d01c3f1c x86: lavr: use the x86inc.asm automatic stack alignment in mixing functions 
CC:libav-stable@libav.org
 2013-01-05 16:14:35 -05:00
Peter Meerwald
be6cde3ce8 lavr: fix missing " in header documentation 
Signed-off-by: Peter Meerwald <p.meerwald@bct-electronic.com>
Signed-off-by: Martin Storsjö <martin@martin.st>
 2013-01-04 10:29:55 +02:00
Diego Biurrun
511cf612ac miscellaneous typo fixes 2012-12-21 00:18:34 +01:00
Justin Ruggles
b2fe6756e3 lavr: add option for dithering during sample format conversion to s16 2012-12-19 18:52:54 -05:00
Hendrik Leppkes
0cf3505930 avresample: use valid log context in mixing functions 
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
 2012-12-16 19:59:58 -05:00
Justin Ruggles
f1c2915ce1 lavr: remove automatic context close/open for resampling compensation 
It adds unnecessary complication for insignificant usability improvement.
The user really should know if they'll need resampling compensation before
opening the context.

Note that only the documentation has changed. The current functionality will
still work until the next major bump.
 2012-12-16 19:26:17 -05:00
Justin Ruggles
f322b20735 lavr: only save/restore the mixing matrix if mixing is being done 2012-12-16 19:26:17 -05:00
Justin Ruggles
230acdde26 lavr: move AudioMix struct definition to audio_mix.c 2012-12-15 12:26:15 -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
887d4c05c9 lavr: clarify documentation for avresample_get/set_matrix() 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
d2f9f8e094 lavr: correct the documentation for the ff_audio_resample() return value 2012-11-27 16:49:18 -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
Ronald S. Bultje
7a9e65acee x86: lavr: fix stack allocation for 7 and 8 channel downmixing on x86-32 
Fixes crashes on Win32 and stack overruns on x86-32 in general.
 2012-11-17 20:16:04 -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
Diego Biurrun
2b479bcab0 build: Drop AVX assembly ifdefs 
An assembler able to cope with AVX instructions is now required.
 2012-11-11 20:43:28 +01:00
Justin Ruggles
a903f8f087 Include libavutil/channel_layout.h instead of libavutil/audioconvert.h 
Also reorder some other #include when applicable.
 2012-11-11 13:35:12 -05:00
Diego Biurrun
4b60fac419 x86: PALIGNR: port to cpuflags 2012-11-09 21:31:31 +01:00
Diego Biurrun
352e18b766 x86: avresample: Add missing colons to assembly labels 
YASM accepts labels without colons, but NASM issues warnings.
 2012-11-06 12:07:35 +01:00
Diego Biurrun
04581c8c77 x86: yasm: Use complete source path for macro helper %includes 
This is more consistent with the way we handle C #includes and
it simplifies the build system.
 2012-10-31 00:37:42 +01:00
Diego Biurrun
6860b4081d x86: include x86inc.asm in x86util.asm 
This is necessary to allow refactoring some x86util macros with cpuflags.
 2012-10-31 00:37:42 +01:00
Anton Khirnov
dc5793062e lavr: document upper bound on number of output samples. 
Signed-off-by: Anton Khirnov <anton@khirnov.net>
 2012-10-29 20:05:47 +01:00
Anton Khirnov
01b760190d lavr: add general API usage doxy 
Signed-off-by: Anton Khirnov <anton@khirnov.net>
 2012-10-29 20:05:41 +01:00
Justin Ruggles
10e645e9cb lavr: handle clipping in the float to s32 conversion 
We cannot clip to INT_MAX because that value cannot be exactly
represented by a float value and ends up overflowing during conversion
anyway. We need to use a slightly smaller float value, which ends up
with slightly inaccurate results for samples which clip or nearly clip,
but it is close enough. Using doubles as intermediates in the conversion
would be more accurate, but it takes about twice as much time.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
 2012-10-13 12:34:34 +02:00
Anton Khirnov
006afc7a0b lavr: bump major to 1 and declare it stable. 2012-10-05 13:50:13 +02:00
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
Mans Rullgard
8ff7857861 ARM: libavresample: NEON optimised generic fltp to s16 conversion 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2012-09-13 19:15:43 +01:00
Mans Rullgard
d26de339af ARM: libavresample: NEON optimised stereo fltp to s16 conversion 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2012-09-13 19:15:43 +01:00
Mans Rullgard
643b5b794f ARM: libavresample: NEON optimised flat float to s16 conversion 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2012-09-13 19:15:42 +01:00
Tim Walker
b901c30da6 lavr/audio_mix_matrix: acknowledge the existence of LFE2. 
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
 2012-09-12 18:26:53 -04:00
Diego Biurrun
e0c6cce447 x86: Replace checks for CPU extensions and flags by convenience macros 
This separates code relying on inline from that relying on external
assembly and fixes instances where the coalesced check was incorrect.
 2012-09-08 18:18:34 +02:00
Martin Storsjö
c7b610aa0b avopt: Explicitly store float/double option defaults in .dbl 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-04 23:13:51 +03:00
Martin Storsjö
e6153f173a avopt: Store defaults for AV_OPT_TYPE_INT in the i64 union member 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-04 23:13:44 +03:00
Martin Storsjö
124134e424 avopt: Store defaults for AV_OPT_TYPE_CONST in the i64 union member 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2012-09-04 23:13:32 +03:00
Diego Biurrun
17337f54c0 x86: Split inline and external assembly #ifdefs 2012-08-31 01:53:25 +02:00