MrBesen/ffmpeg
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64 Commits

Author SHA1 Message Date
Michael Niedermayer
2f76157eb0 swresample/rematrix: Use clipping s16 rematrixing if overflows are possible 
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2016-05-15 22:25:34 +02:00
Michael Niedermayer
7fe81bc4f8 swresample/rematrix: Use error diffusion to avoid error in the DC component of the matrix 
This fixes the sum of the integer coefficients ending up summing to a value
larger than the value representing unity.

This issue occurs with qN0.dts when converting to stereo

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
 2016-05-15 18:36:53 +02:00
wm4
cdf4a13f86 swresample: slightly nicer debug output for auto matrix 
This is the matrix that will be used for up/downmixing.
 2015-10-15 20:16:13 +02:00
Michael Niedermayer
52acd22a7d libswresample/rematrix: Check for malloc errors 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2015-06-04 02:36:30 +02:00
Michael Niedermayer
80a28c7509 swresample: Allow reinitialization without ever setting channel layouts 2015-04-12 22:21:34 +02:00
Michael Niedermayer
b74ecb82fa swresample/x86/rematrix_init: Check av_malloc* return codes, forward errors 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2015-02-09 10:15:56 +01:00
Reimar Döffinger
2c5c37ade1 libswresample: move condition to start of loop. 
This avoids several issue like calculating sum/maxcoef
incorrectly due to adding up matrix entries that will
be overwritten, as well as out-of-range writes to
s->matrix if the maximum allowed number of channels is used.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
 2014-09-07 11:31:34 +02:00
Reimar Döffinger
284123d7fd Remove pointless if. 
A branch to avoid some calculation seems unlikely to have any benefits.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
 2014-09-07 11:31:33 +02:00
Reimar Döffinger
2231d5b671 libswresample: Avoid needlessly large on-stack array. 
We only actually need to use a tiny part of it.
Unfortunately we seem to have no real test coverage on
the code, so this is a bit risky.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
 2014-09-07 11:31:33 +02:00
Michael Niedermayer
291d464161 swresample: fix AV_CH_LAYOUT_STEREO_DOWNMIX input 
Fixes Ticket 3542

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-24 01:25:46 +02:00
Nicolas George
4a640a6ac8 lswr: fix assert failure on unknown layouts. 2013-11-03 10:30:37 +01:00
Michael Niedermayer
c56d4dab03 swr/rematrix: Fix handling of AV_CH_LAYOUT_STEREO_DOWNMIX output 
Fixes Ticket2859

Note, testcases related to the downmix channels are welcome.
(id like to make sure this is working correctly now, as obviously it didnt
 work before ...)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-08-20 16:56:51 +02:00
Michael Niedermayer
6dfffe9200 swr: clean layouts before checking sanity 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-08-20 16:49:31 +02:00
Michael Niedermayer
7ac12599fe swresample: fix negative rematrix volumns 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-07-22 03:24:22 +02:00
Michael Niedermayer
e2b718464e swresample: Make rematrix maxvalue user settable 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-07-22 03:23:54 +02:00
Michael Niedermayer
4cfc92081d swr: add native_simd_one 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-06-04 23:50:45 +02:00
Michael Niedermayer
b84de51f54 swresample/rematrix: add S32 mixing code 
Needed for dithering S32

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-06-04 15:12:11 +02:00
Michael Niedermayer
6e29f39252 swr/rematrix: use av_calloc() 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-04-15 20:31:06 +02:00
Clément Bœsch
5e68bf9b92 swr/rematrix: move templating parameters to template itself. 2012-11-15 21:24:49 +01:00
Paul B Mahol
1acd2f6ba7 Replace rest of libavutil/audioconvert.h with libavutil/channel_layout.h 
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
Michael Niedermayer
555f352f99 swr/rematrix: fix C99 left shift overflow 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-10-14 03:48:05 +02:00
Michael Niedermayer
31a797eb28 swr: add av_cold to init/free functions 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-09-09 02:26:20 +02:00
Michael Niedermayer
0e78e575ed swr/auto_matrix: treat a single channel as mono instead of failing 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-09-08 21:32:24 +02:00
Michael Niedermayer
f8d74cbdc3 swr/auto_matrix: treat stereo downmix like stereo. 
Based on code by John Stebbins
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-09-08 21:12:40 +02:00
Michael Niedermayer
c8ffab06f4 swr/auto_matrix: add clean layout function 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-09-08 21:10:19 +02:00
Michael Niedermayer
ebc854e4e9 swr/auto_matrix: move layouts to local variables 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-09-08 20:58:57 +02:00
Michael Niedermayer
c5278cb84f Add Dolby/DPLII downmix support to libswresample 
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
Michael Niedermayer
2dd2e42951 swr: update rematrix coeffs to match AC-3 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-09-07 00:29:06 +02:00
Michael Niedermayer
7309451d73 swr: fix warning: passing argument 2 of s->mix_any_f from incompatible pointer type 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-07-02 17:33:27 +02:00
Michael Niedermayer
04b5eb47a6 swr: fix mix* related function pointer warnings 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-07-02 17:23:22 +02:00
Stefano Sabatini
065851ffac lswr/rematrix: specify explicitly the name of the unsupported channel layouts 
Help debugging.
 2012-06-21 12:47:47 +02:00
Michael Niedermayer
728f86edfc swr: mix_2_1_int16_mmx/sse 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-06-12 17:49:12 +02:00
Michael Niedermayer
cbeeaf2593 swr: mix_1_1 int16 MMX 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-06-12 16:35:13 +02:00
Michael Niedermayer
beb0cd6acf swr: SIMD rematrixing and SSE/AVX mix_1_1 float 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-06-12 16:35:07 +02:00
Michael Niedermayer
48a45f819f swr: add native matrix for SIMD 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-06-12 16:16:15 +02:00
Michael Niedermayer
a5c6349358 swr: skip memset(0) in rematrix when the array is known to be already 0 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-06-09 02:43:10 +02:00
Michael Niedermayer
b0348158a0 swr: 5.1->stereo double, float and s16 
2.5 times faster than the generic code

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-06-08 22:02:14 +02:00
Michael Niedermayer
ca30ae12c5 swr: add all in one rematrixing function ptr 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-06-08 21:55:33 +02:00
Michael Niedermayer
dfde3d497e swr: add inrermediate sample type for rematrixing 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-06-08 21:54:54 +02:00
Michael Niedermayer
f2e799a3d0 swr: add double precision support to the rematrix code 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-05-02 01:12:16 +02:00
Justin Ruggles
6d5bf67f04 swr: add lfe_mix_level 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-05-02 01:12:10 +02:00
Justin Ruggles
9b42653b22 swr: update side to back mixing. 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-05-02 01:11:55 +02:00
Michael Niedermayer
aab5a4521c swr: add and use function pointers for rematrix 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-05-01 20:20:21 +02:00
Michael Niedermayer
00fea26faf swr: add native matrix for rematrixing 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-05-01 20:19:28 +02:00
Michael Niedermayer
edbde52226 swr: change sample format representation so as to maintain the planer/packed distinction. 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-04-28 13:02:58 +02:00
Michael Niedermayer
f9a2c5bc07 swr: simplify code by using av_get_bytes_per_sample() 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-04-11 10:02:00 +02:00
Michael Niedermayer
7c673d73ec swr: use assert in swri_sum2 to check that only supported formats are used. 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-04-10 19:54:42 +02:00
Michael Niedermayer
db2eadb2f5 swr: add dither support. 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-04-10 19:54:41 +02:00
Michael Niedermayer
5c1f312888 swr: update copyright year for rematrix 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2012-04-10 19:54:41 +02:00
Nicolas George
a8cdb7b95a swr: special case for empty channels in rematrix. 
Speed += 10% overall for pan=stereo:FL=FL+FR from wav to null.
 2012-03-07 23:56:00 +01:00