Commit Graph

20 Commits

Author SHA1 Message Date
Luca Barbato
0ac8ff618c avresample: Reallocate the internal buffer to the correct size
Fixes the corner case in which the internal buffer size
is larger than input buffer provided and resizing it
before moving the left over samples would make it write
to now unallocated memory.

Bug-Id: 825
CC: libav-stable@libav.org

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
2015-04-28 23:51:51 +02:00
Vittorio Giovara
1a3eb042c7 Replace av_dlog with normal av_log at trace level
This applies to every library where performance is not critical.
2015-04-19 12:41:59 +01:00
Peter Meerwald
12655c4804 libavresample: NEON optimized FIR audio resampling
modelled after aarch64 code

on Cortex-A8, s16 and s32 code is about 2x faster,
float code about 7x faster

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Martin Storsjö <martin@martin.st>
2015-02-21 22:08:39 +02:00
Janne Grunau
a24a252709 aarch64: NEON optimized FIR audio resampling
Optimized for the default filter length 16.

30% faster opus silk decoding.
2014-04-24 18:28:26 +02:00
Janne Grunau
cae8df7875 lavr: define ResampleContext in resample.h
Required for arch optimized resampling.
2014-04-24 18:28:26 +02:00
Anton Khirnov
21d8f4da91 resample: remove an unneeded context variable 2014-04-17 20:08:19 +02:00
Anton Khirnov
f7c5fd8151 resample: implement flushing 2014-04-13 11:15:45 +02:00
Anton Khirnov
254c95cdd1 resample: split linear into its own function 2014-04-11 16:34:02 +02:00
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.
2014-04-11 16:33:46 +02:00
Anton Khirnov
f20892eb67 resample: split the nearest neighbour path into a separate function pointer 2014-04-11 16:26:36 +02:00
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
2014-04-11 16:21:25 +02:00
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
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
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
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
Diego Biurrun
3aa696e883 avresample: De-doxygenize some comments where Doxygen is not appropriate 2012-08-11 20:22:01 +02:00
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:
7f1ae79d38
24ab1abfb6
2012-07-08 15:22:11 -04:00
Justin Ruggles
372647aed0 lavr: resampling: add filter type and Kaiser window beta to AVOptions 2012-07-08 15:22:11 -04:00
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