740f5105d5
swresample: Use double and float for matrixes for best quality and speed
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc >
2016-09-27 12:53:25 +02:00
30b2611ed3
swresample: Skip over dither steps if dithering scale is 0
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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc >
2016-08-18 11:52:11 +02:00
b8c6e5a661
swresample: add exact_rational option
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give high quality resampling
as good as with linear_interp=on
as fast as without linear_interp=on
tested visually with ffplay
ffplay -f lavfi "aevalsrc='sin(10000*t*t)', aresample=osr=48000, showcqt=gamma=5"
ffplay -f lavfi "aevalsrc='sin(10000*t*t)', aresample=osr=48000:linear_interp=on, showcqt=gamma=5"
ffplay -f lavfi "aevalsrc='sin(10000*t*t)', aresample=osr=48000:exact_rational=on, showcqt=gamma=5"
slightly speed improvement
for fair comparison with -cpuflags 0
audio.wav is ~ 1 hour 44100 stereo 16bit wav file
ffmpeg -i audio.wav -af aresample=osr=48000 -f null -
old new
real 13.498s 13.121s
user 13.364s 12.987s
sys 0.131s 0.129s
linear_interp=on
old new
real 23.035s 23.050s
user 22.907s 22.917s
sys 0.119s 0.125s
exact_rational=on
real 12.418s
user 12.298s
sys 0.114s
possibility to decrease memory usage if soft compensation is ignored
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com >
2016-06-13 12:36:01 +07:00
180f9a0958
all: Make header guard names consistent
2016-01-31 15:44:11 -08:00
1bed09a30e
swresample: allow double precision beta value for the Kaiser window
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Kaiser windows inherently don't require beta to be an integer. This was
an arbitrary restriction. Moreover, soxr does not require it, and in
fact often estimates beta to a non-integral value.
Thus, this patch allows greater flexibility for swresample clients.
Micro version is updated.
Reviewed-by: Derek Buitenhuis <derek.buitenhuis@gmail.com >
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc >
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com >
2015-11-08 21:11:07 -05:00
ef62f573ca
swresample/swresample_internal: add av_warn_unused_result
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This will trigger a few warnings that need to be fixed.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc >
Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com >
2015-10-15 22:27:23 -04:00
a77401e1f7
lswr: Allow 64 channels internally.
2015-07-17 00:17:08 +02:00
d4325b2fea
swr: Remember previously set int_sample_format from user
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2015-06-22 18:34:39 +02:00
c70c6be225
swresample: soxr implementation for swr_get_out_samples()
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2015-06-21 23:38:44 +02:00
cc17b43d8d
swresample: Add swr_get_out_samples()
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Previous version reviewed-by: Pavel Koshevoy <pkoshevoy@gmail.com >
Previous version reviewed-by: wm4 <nfxjfg@googlemail.com >
Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2015-06-04 05:37:32 +02:00
196b885a5f
swresample/dither: check memory allocation
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check memory allocation in swri_get_dither()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2015-06-03 11:46:37 +02:00
80a28c7509
swresample: Allow reinitialization without ever setting channel layouts
2015-04-12 22:21:34 +02:00
d7b9cb2f7a
swresample: Allow reinitialization without ever setting channel counts
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2015-04-12 22:21:34 +02:00
4d00860ac7
swresample: Add prefix to soxr_resampler
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also move declaration to header
Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2015-02-27 19:20:43 +01:00
b74ecb82fa
swresample/x86/rematrix_init: Check av_malloc* return codes, forward errors
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2015-02-09 10:15:56 +01:00
9d7ae72725
swresample: Use int instead of enum for fields which are accessed through AVOptions as int
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2015-02-02 23:27:26 +01:00
6efd0ba977
swresample_internal.h: Move struct declaration before first use.
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It seems more logical and works with more restricted C compilers
like tinycc.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de >
2015-01-27 21:29:51 +01:00
7c51f5bd39
swr: aarch64 audio_convert and neon clobber test
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Ported from avresample
Code by: Mans Rullgard, Janne Grunau, Martin Storsjo
Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2014-08-27 20:06:37 +02:00
97f8c7a03e
bump libpostproc and libswresample
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this is needed / avoids some headaches as one of their dependancies
(libavutil) was bumped
Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2014-08-10 01:17:02 +02:00
39a6e02fd4
fix spelling errors
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Reviewed-by: Timothy Gu <timothygu99@gmail.com >
Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2014-07-12 22:33:27 +02:00
42a92a240d
swr: remove obsolete resample prototypes
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Signed-off-by: James Almer <jamrial@gmail.com >
Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2014-07-02 03:14:45 +02:00
b785c62681
swr: handle initial negative sample index outside DSP function.
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2014-06-14 14:36:18 +02:00
e2b718464e
swresample: Make rematrix maxvalue user settable
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2013-07-22 03:23:54 +02:00
4cfc92081d
swr: add native_simd_one
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2013-06-04 23:50:45 +02:00
8b3affda87
swr: support a seperate output sample bits.
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This avoids user apps having to mangle dither scale. for pcm24
Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2013-02-24 20:31:56 +01:00
00cae86754
swr: support first_pts
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Trolled-by: Daemon404
Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2013-01-21 00:52:14 +01:00
db4e0ecaf0
swr: move silence buffer to context to avoid per use malloc/free
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2013-01-13 15:28:00 +01:00
dc6588421e
swr: move buffer used to discard sample to context
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This avoids the need to allocate & free to repeatly
Fixes Ticket2122
Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2013-01-13 15:28:00 +01:00
e5a736261b
swr: Use a temporary buffer for dither/Noise shaping when the input is read only
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This avoids copying the input
Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2013-01-10 18:51:30 +01:00
2eec98125e
swr: mark noise data for noise shaping as const
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2013-01-10 18:07:32 +01:00
558aa6cab7
swr: add seperate in/out pointers to the noise shaping code
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2013-01-10 18:06:19 +01:00
fca51256d4
swr: rename dither_pos to noise_pos
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THis more closely matches what the field represents
Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2013-01-10 18:01:26 +01:00
ead3a2a37e
swr: add noise_scale field to seperate it from the noise shaping scales
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2013-01-10 00:25:09 +01:00
6908ded20e
swr: fix the noise sample type for noise shaping
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2013-01-09 23:28:09 +01:00
3ef06f3415
swr: split swri_dither_init() out
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2013-01-09 23:28:08 +01:00
3ab1970612
swr: move dither related fields to their own context
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2013-01-09 18:41:12 +01:00
ba1314c2ef
swr: update copyright years of a few files iam working on
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2013-01-09 18:30:01 +01:00
82742294b7
swr: Implement Noise shaping dither
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The following variants are implemented:
lipshitz noise shaping dither
shibata noise shaping dither
low shibata noise shaping dither
high shibata noise shaping dither
f-weighted noise shaping dither
modified-e-weighted noise shaping dither
improved-e-weighted noise shaping dither
Data tables taken from SOX
Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2013-01-09 18:25:06 +01:00
8d9a503313
docs: add soxr documentation
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2012-12-27 12:13:17 +01:00
f9e55c0fed
swr: support -async X as a simple way to do what ffmpeg -async X did
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2012-12-25 17:21:09 +01:00
801b315729
swr: Add SOX resampler support
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2012-12-11 22:04:00 +01:00
ae5a55e77a
swr: move flush into Resampler
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2012-12-11 22:04:00 +01:00
431dcc49d2
swr: make realloc_audio() available outside swresample.c
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2012-12-11 22:04:00 +01:00
5a5d70748c
swr: Add API to make resample engine selectable.
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2012-12-11 22:04:00 +01:00
1acd2f6ba7
Replace rest of libavutil/audioconvert.h with libavutil/channel_layout.h
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Also remove it in once case when it is not needed.
Signed-off-by: Paul B Mahol <onemda@gmail.com >
2012-11-13 13:21:21 +00:00
d23e8f53ad
swr: use 64bit index/len for x86_64 mix
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2012-10-28 02:09:08 +02:00
0eebde07a9
ARM: libswresample: NEON optimised flat float to s16 conversion
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Adapted to swr by: Michael Niedermayer <michaelni@gmx.at >
Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2012-09-24 23:16:14 +02:00
c5278cb84f
Add Dolby/DPLII downmix support to libswresample
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Based on code by John Stebbins <jstebbins.hb@gmail.com >
Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2012-09-07 00:41:49 +02:00
323d912010
swr: update copyright years
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at >
2012-09-07 00:29:06 +02:00
7e15df7551
swr: resampling: add filter type and Kaiser window beta to AVOptions
2012-07-23 19:23:39 +02:00
