virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-28 20:53:54 +02:00
Code Issues Releases Activity
69,619 Commits 37 Branches 400 Tags 467 MiB
c02b8c4527
Commit Graph

475 Commits

Author SHA1 Message Date
Michael Niedermayer
c5a405c4f0 swresample/resample_template: flip order of operations in swri_resample_linear() for 32bit 
Fixes integer overflow

Found-by: BBB
Reviewed-by: "Ronald S. Bultje" <rsbultje@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-29 22:19:57 +02:00
Ronald S. Bultje
faa1471ffc swr: rewrite resample_common/linear_float_sse/avx in yasm. 
Linear interpolation goes from 63 (llvm) or 58 (gcc) to 48 (yasm)
cycles/sample on 64bit, or from 66 (llvm/gcc) to 52 (yasm) cycles/
sample on 32bit. Bon-linear goes from 43 (llvm) or 38 (gcc) to
32 (yasm) cycles/sample on 64bit, or from 46 (llvm) or 44 (gcc) to
38 (yasm) cycles/sample on 32bit (all testing on OSX 10.9.2, llvm
5.1 and gcc 4.8/9).

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-28 17:06:47 +02:00
Ronald S. Bultje
ddb7b4435a swr: move dst_size == 0 handling outside DSP function. 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-28 15:30:01 +02:00
Ronald S. Bultje
0dae193d3e swr: remove another forgotten division in DSP function. 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-22 05:20:22 +02:00
Ronald S. Bultje
cbf21628a5 swr: remove div/mod from DSP functions. 
Also fix a bug with resample_compensation resetting dst_incr.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-18 14:15:52 +02:00
Michael Niedermayer
0608bc6502 swresample/audioconvert: fix () in FMT_PAIR_FUNC() 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-18 03:13:37 +02:00
Ronald S. Bultje
edf930472b swr: reindent. 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-16 01:33:32 +02:00
Ronald S. Bultje
083cd3d1f7 swr: compile mmx2 s16p functions only on x86-32. 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-15 13:34:53 +02:00
James Almer
7f4dfbd080 swr: add prototypes for resample dsp functions 
Should fix compilation failures with MSVC and any other compiler
without inline asm support.

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-15 01:33:17 +02:00
Ronald S. Bultje
ada8f9c046 swr: remove obsolete function prototypes. 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-15 00:07:25 +02:00
Ronald S. Bultje
7128a35f8c swr: split out DSP functions. 
DSP bits of swri_resample go into their own mini-DSP functions; DSP
init goes from a per-call branch in multiple_resample to a proper
DSP init routine; x86 bits go into x86/; swri_resample() moves out of
resample_template.c into resample.c because it's independent of DSP
code or sample type; multiple_resample() is simplified.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-14 20:21:39 +02:00
Michael Niedermayer
4411928c64 swresample/resample: replace assert by av_assert 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-14 16:33:09 +02:00
Ronald S. Bultje
b785c62681 swr: handle initial negative sample index outside DSP function. 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-14 14:36:18 +02:00
Ronald S. Bultje
6b9685de3a swr: remove unnecessary assignment. 
I don't see dst_incr/dst_incr_frac ever being changed from their
initial value (which is the inverse of this operation), so it seems
to me that this is a no-op.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-14 04:30:53 +02:00
Ronald S. Bultje
f341340552 swr: handle 64bit overflow check in multiple_resample(). 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-09 15:24:51 +02:00
Lou Logan
88f2586adb fix various typos 
Signed-off-by: Lou Logan <lou@lrcd.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-03 10:58:19 -08:00
Ronald S. Bultje
cdfd9717ed swr: move compensation_distance handling to swri_resample caller. 
I think there's an off-by-one in terms of the switchpoint where we
switch from dst_incr to ideal_dst_incr, I don't think that's a massive
issue, but just be aware of that. It's probably trivial to prevent but
I don't care.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

I could not reproduce any off by 1 error, results are bit exact (michael)
 2014-06-02 15:06:24 +02:00
Michael Niedermayer
2c23f87c85 swr/resample_template: prevent end_index from overflowing and add check for delta_frac overflow 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-02 00:57:08 +02:00
Ronald S. Bultje
9b53853756 Rewrite main resampling loop (common and linear). 
This removes a branch at a performance-sensitive point (in the middle
of the loop). In fate-swr-resample-s32p-8000-2626, this makes the code
about 10% faster. It also simplifies the loops, allowing us to rewrite
it in yasm at some later point.

The compensation_distance != 0 code and index < 0 code are still kind
of hairy. For compensation_distance != 0, this should likely be handled
in the caller, so that it calls swri_resample twice (once until the
dst_incr switch-point, and once with the remainder of the samples). For
index < 0, the code should probably be rewritten to break out of the
loop once sample_index >= 0, and then resume (e.g. as a tail-call) to
the common or linear resampling loops.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-06-02 00:47:54 +02:00
James Almer
a9bf713d35 swresample: add swri_resample_float_avx 
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-05-16 05:27:03 +02:00
Michael Niedermayer
96cb4c8718 swresample: swr_close() 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-05-15 18:27:23 +02:00
Matt Oliver
1898c2f49d inline asm: fix arrays as named constraints. 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-05-07 15:02:45 +02:00
James Almer
4cdea92976 swresample/resample: add missing xmm clobbers 
Might fix fate-swr on ICL

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-05-07 01:32:40 +02:00
Michael Niedermayer
68c3e6025f Fix convertion typos 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-29 00:09:08 +02:00
James Almer
cdac3ab59f swresample: add swri_resample_double_sse2 
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-25 16:46:07 +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
Michael Niedermayer
2b58c9c945 swresample/resample_template: try to consider src_size more exactly 
This should avoid slight differences in the output causes by input
size alignment differences between archs

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-15 06:35:35 +02:00
Michael Niedermayer
5e379cd3ee swresample/resample: simplify index/consumed calculation for the filter = 1 case 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-14 02:23:04 +02:00
Michael Niedermayer
6c8ee74af2 swresample/resample: Fix fractional part of index in the filter_size = 1 filters = 1 case 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-14 02:22:17 +02:00
Michael Niedermayer
5027f39712 swresample/resample: use av_malloc_array() where appropriate 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-08 00:29:26 +02:00
Michael Niedermayer
a5290cb1ac swresample/dither: use av_malloc_array() 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-08 00:29:20 +02:00
Michael Niedermayer
f9158b01d0 swresample/resample: Limit filter length 
Related to CID1197063

The limit choosen is arbitrary and much larger than what makes sense.
It avoids the need for checking arithmetic operations with the length for overflow

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-08 00:25:49 +02:00
James Almer
63dbba655e swresample/resample: sse float linear interpolation 
About two times faster

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-03-24 02:34:02 +01:00
James Almer
fa25c4c400 swresample/resample: mmx2/sse2 int16 linear interpolation 
About three times faster

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-03-24 02:33:16 +01:00
James Almer
32291ba6ea swresample: add swri_resample_float_sse 
At least two times faster than the C version.

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-03-20 06:01:06 +01:00
Matt Oliver
8236747511 Automatically change MANGLE() into named inline asm operands when direct symbol reference in inline asm are not supported. 
This is part of the patch-set for intel C inline asm on windows support

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-03-18 23:39:30 +01:00
James Almer
3d48cbc56c swresample: reuse COMMON_CORE asm where possible 
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-03-18 16:08:34 +01:00
James Almer
7c8bf09edd swresample: change COMMON_CORE_INT16 asm from SSSE3 to SSE2 
pshuf+paddd is slightly faster than phaddd.
The real gain is in pre-ssse3 processors like AMD K8 and K10, which get
a big boost in performance compared to the mmxext version

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-03-18 15:00:50 +01:00
Michael Niedermayer
6c6e4dd139 swr: check that the context for swr_convert() has been initialized 
Reviewed-by: ubitux
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-02-24 08:23:42 +01:00
Michael Niedermayer
a66be60888 swresample: add swr_is_initialized() 
Idea-from/based-on: 7e86c27b4e
Reviewed-by: ubitux
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-02-24 08:23:22 +01:00
Michael Niedermayer
f284e2a58a swresample: factorize clear_context() out 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-02-22 21:36:30 +01:00
Reimar Döffinger
e535897fad Fix libswresample compilation with Apple Neon assembler. 
Signed-off-by: Carl Eugen Hoyos <cehoyos@ag.or.at>
 2014-02-17 17:40:10 +01:00
Martin Storsjö
3dd04cbcf7 swresample: Add arm&x86 clobber tests 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-01-18 18:38:57 +01:00
Reimar Döffinger
cbeaf67888 Avoid using empty macro arguments. 
These are not supported by all compilers (gcc 2.95 but also older SPARC
compilers, see gcc bug #33304 for example), and there is no real need for them.
One use of this feature remains in libavdevice/v4l2.c which can't be
replaced quite as easily.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
 2013-12-31 12:19:59 +01:00
Stefano Sabatini
334e2e2363 lavu,lavc,lswr: do not hardcode AV_SAMPLE_FMT_NB value when setting sample format max value 
The constant may change in libavutil but the library may be compiled
against an older version, thus rejecting a value which is otherwise
supported by the new libavutil.

INT_MAX is used here to denote the max allowed value for a sample format.

The opt-test code is changed to provide a valid reference example.
 2013-12-26 11:35:27 +01:00
James Almer
56572787ae Add Windows resource file support for shared libraries 
Originally written by James Almer <jamrial@gmail.com>

With the following contributions by Timothy Gu <timothygu99@gmail.com>

* Use descriptions of libraries from the pkg-config file generation function
* Use "FFmpeg Project" as CompanyName (suggested by Alexander Strasser)
* Use "FFmpeg" for ProductName as MSDN says "name of the product with which the
  file is distributed" [1].
* Use FFmpeg's version (N-xxxxx-gxxxxxxx) for ProductVersion per MSDN [1].
* Only build the .rc files when --enable-small is not enabled.

[1] http://msdn.microsoft.com/en-us/library/windows/desktop/aa381058.aspx

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-12-05 23:42:07 +01:00
Michael Niedermayer
a6af5da7a2 swresample: use the internal buffer for resampling the last few samples 
Fixes out of array read
Fixes Ticket3193

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-12-04 20:40:42 +01:00
Nicolas George
4a640a6ac8 lswr: fix assert failure on unknown layouts. 2013-11-03 10:30:37 +01:00
Stefano Sabatini
904c89ac1b lswr/swresample: convert ocl and icl options to AV_OPT_TYPE_CHANNEL_LAYOUT 
Improve interface flexibility. In particular makes it possible to set
channel layout through symbolic names using the av_opt_set() interface.
 2013-10-17 18:09:54 +02:00
Ronald S. Bultje
ad75d2b590 x86: Fix compilation with nasm on PPC & OS/2 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-10-08 12:36:19 +02:00
Clément Bœsch
a89e9ad1c8 swr: fix example code and doxy indent. 2013-09-29 23:37:46 +02:00
Michael Niedermayer
9078b40d35 swresample: replace 2 av_free() by av_freep() 
avoids leaving stale pointers in memory

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-09-16 22:44:15 +02:00
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
Timothy Gu
a9bbf59be7 cosmetics: Fix "dont" "wont" "doesnt" typos 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-06-29 02:31:16 +02:00
Michael Niedermayer
ca2818b881 swresample/x86/audio_convert: add emms to CONV 
Might fix Ticket1874

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-06-18 02:26:36 +02:00
Michael Niedermayer
d62030ffca swresample/rematrix_template: Fix integer overflow in mix8to2 
Fixes: CID1030352
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-06-10 03:03:17 +02:00
Michael Niedermayer
b04bbe6b86 swresample/rematrix_template: Fix integer overflow in mix6to2 
Fixes: CID1030351
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-06-10 03:03:12 +02:00
Michael Niedermayer
3289670142 swr: dont treat 32 and 24 as equal in simple copy check 
Fixes dithering from 32 to 24 bit

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-06-05 03:06:34 +02:00
Michael Niedermayer
6bc4e36ba7 swr: set scale for 32->32/24 dither 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-06-05 03:06:34 +02:00
Paul B Mahol
0804171104 swresample: set flags & description and add documentation for output_sample_bits 
Allows users to actually use such option.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
 2013-06-04 21:57:25 +00:00
Michael Niedermayer
495bf1b685 swr: Fix dithering of s16 with SIMD 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-06-04 23:50:45 +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
f3c638eac1 wresample/rematrix_template: fix internal types 
Should make no difference, but future commits will need it

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
Michael Niedermayer
03148fd174 buildsys: only include log2_tab per library for shared builds 
Fix linking failures with -all_load due to multiple log2_tabs

Signed-off-by: Carl Eugen Hoyos <cehoyos@ag.or.at>
 2013-03-04 12:25:02 +01:00
Rob Sykes
dc666d360b soxr: libsoxr 0.1.1 support 
Libsoxr 0.1.1 will be out very soon; no changes planned beyond what's currently in git.
It includes a couple of fixes (not affecting FFmpeg's current usage) and a minor API change (but remains ABI compatible).

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-03-01 14:38:02 +01:00
Michael Niedermayer
35aaa306ac swr: make the default of nopts for first_pts actually work 
Fixes Ticket2210

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-02-25 04:39:26 +01:00
Michael Niedermayer
8b3affda87 swr: support a seperate output sample bits. 
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
Michael Niedermayer
2abbe6d07a swr: add duplicate cutoff for compatibility 
Based on
	commit 50f4337a2f
	Author: Justin Ruggles <justin.ruggles@gmail.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-02-24 20:31:56 +01:00
Michael Niedermayer
21cd905cd4 swr: check channel layouts before using them. 
Fixes out of array accesses

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-02-13 17:50:24 +01:00
Michael Niedermayer
b5f544a0f9 swr: Dont use floats for S32->S32 when possible 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-02-04 04:11:46 +01:00
Michael Niedermayer
be989f9236 swr: reorder init code to make rematrix status available earlier 
This also makes some other fields available earlier which may
be usefull one day

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-02-04 04:05:59 +01:00
Michael Niedermayer
24244cec2f swr-test: Fix clip to 32bit 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-02-04 04:05:59 +01:00
Michael Niedermayer
b8c55590d5 swr/resample: fix integer overflow, add missing cast 
The effects of this are limited to numeric errors in the output

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-02-04 04:05:59 +01:00
Michael Niedermayer
91debec976 swr/resample: fix filter rounding and cliping for s32 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-02-04 04:05:59 +01:00
Michael Niedermayer
f9abeecd94 swr/ build_filter: use av_calloc() fix buffer overflow 
Fixes integer & buffer overflow

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-27 05:58:47 +01:00
Michael Niedermayer
167af704ea swr: limit phase_shift to a less insane value. 
This prevents potential crashes and out of memory issues if
the user manually sets such insane values.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-27 05:54:52 +01:00
Michael Niedermayer
00cae86754 swr: support first_pts 
Trolled-by: Daemon404
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-21 00:52:14 +01:00
Michael Niedermayer
cc4a41727e swr: fix "may be used uninitialized in this function" warnings 
The uninitialized use implicates 0 channels, which is unlikely
to reach this function but fixed anyway in this commit.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-20 17:09:48 +01:00
Michael Niedermayer
55d0528669 swr/dither: fix division by 0 
Found-by: Daemon404
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-14 02:57:00 +01:00
Michael Niedermayer
d676598f87 swr: fix handling of timestamps that cause multiple drops or silence injections 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-13 18:39:06 +01:00
Michael Niedermayer
a34aee4646 swr: limit buffer size for silence injection 
This reduces memory usage for unreasonable large silence injections

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-13 16:04:41 +01:00
Michael Niedermayer
b481d09bd9 swr: limit buffer size for discarding. 
This prevents insane memory usage in case of insane input values.
Untested due to lack of a testcase that causes such insane allocation

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-13 16:04:41 +01:00
Michael Niedermayer
db4e0ecaf0 swr: move silence buffer to context to avoid per use malloc/free 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-13 15:28:00 +01:00
Michael Niedermayer
dc6588421e swr: move buffer used to discard sample to context 
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
Michael Niedermayer
c8737d348b swr: work with 4 noise shaping coeffs at a time 
63->38 kcycles

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-12 19:17:08 +01:00
Michael Niedermayer
93bc0f0180 swr/noise_shaping_data: pad coeffs to multiple of 4 when they are 1 below 
This allows using code working with 4 at a time

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-12 19:09:54 +01:00
Michael Niedermayer
ef7fdc8cff swr: use a local variable for ns_coeffs 
maybe a very tiny bit faster

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-12 17:43:29 +01:00
Michael Niedermayer
68ff7d265f swr: use local variable for ns_errors 
71 -> 63 kcycles

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-12 17:43:29 +01:00
Michael Niedermayer
b5d9e5d06c swr: minor simplification for the noise shaping pos update 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-12 17:43:29 +01:00
Michael Niedermayer
a74548521b swr: check that allocation of in/out_convert succeeded 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-10 20:27:07 +01:00
Michael Niedermayer
e5a736261b swr: Use a temporary buffer for dither/Noise shaping when the input is read only 
This avoids copying the input

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-10 18:51:30 +01:00
Michael Niedermayer
2eec98125e swr: mark noise data for noise shaping as const 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-10 18:07:32 +01:00
Michael Niedermayer
558aa6cab7 swr: add seperate in/out pointers to the noise shaping code 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-10 18:06:19 +01:00
Michael Niedermayer
fca51256d4 swr: rename dither_pos to noise_pos 
THis more closely matches what the field represents

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-10 18:01:26 +01:00
Michael Niedermayer
2672b2c1d2 swr: scale data down in noise shaping to avoid cliping 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-01-10 01:44:15 +01:00