virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-12 19:18:44 +02:00
Code Issues Releases Activity
45,089 Commits 37 Branches 400 Tags 463 MiB
deefca02c2
Commit Graph

24 Commits

Author SHA1 Message Date
Justin Ruggles
b57e38f52c ac3dsp: x86: Replace inline asm for in-decoder downmixing with standalone asm 
Adds a wrapper function for downmixing which detects channel count changes
and updates the selected downmix function accordingly.

Simplification and porting to current x86inc infrastructure by Diego Biurrun.

Signed-off-by: Diego Biurrun <diego@biurrun.de>
 2016-10-01 00:46:25 +02:00
Justin Ruggles
a9ba59591e ac3dsp: Add some special-case handling for the C downmix function 
This is about 200% faster for in-decoder downmixing of 5.0 and 5.1 content.

Signed-off-by: Diego Biurrun <diego@biurrun.de>
 2016-10-01 00:46:18 +02:00
Justin Ruggles
43717469f9 ac3dsp: Reverse matrix in/out order in downmix() 
Also use (float **) instead of (float (*)[2]). This matches the matrix
layout in libavresample so we can reuse assembly code between the two.

Signed-off-by: Diego Biurrun <diego@biurrun.de>
 2016-10-01 00:45:55 +02:00
Diego Biurrun
0f40c90984 Drop pointless assert.h #includes 2016-05-03 15:45:10 +02:00
Peter Meerwald
9abc80f1ed libavcodec: Make use of av_clip functions 
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
 2015-02-21 00:54:40 +01:00
Diego Biurrun
831a118078 Update dsputil- and SIMD-related comments to match reality more closely 2014-03-13 05:50:29 -07:00
Diego Biurrun
4958f35a2e dsputil: Move apply_window_int16 to ac3dsp 
The (optimized) functions are used nowhere else.
 2013-12-08 17:57:15 +01:00
Mans Rullgard
30b3916425 ac3dec: make downmix() take array of pointers to channel data 2012-12-09 15:52:01 +00:00
Janne Grunau
f101eab1be x86: call most of the x86 dsp init functions under if (ARCH_X86) 
Rename the called dsp init functions to *_init_x86.
 2012-10-08 11:54:05 +02:00
Mans Rullgard
97cb9236cf ac3: move ac3_downmix() from dsputil to ac3dsp 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2012-09-12 23:39:50 +01:00
Mans Rullgard
034b03e7a0 ac3: Do not read past the end of ff_ac3_band_start_tab. 
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Alex Converse <alex.converse@gmail.com>
 2012-01-31 18:32:14 -08:00
Justin Ruggles
8b7b2d6aae ac3dsp: simplify extract_exponents() now that it does not need to do clipping. 2011-07-01 13:02:11 -04:00
Justin Ruggles
dc0ad40de2 ac3dsp: fix loop condition in ac3_update_bap_counts_c() 2011-05-28 14:41:21 -04:00
Justin Ruggles
6ca23db9cc ac3enc: modify mantissa bit counting to keep bap counts for all values of bap 
instead of just 0 to 4.

This does all the actual bit counting as a final step.
 2011-05-28 12:39:28 -04:00
Justin Ruggles
63b1866ae1 ac3enc: clip large coefficient values and negative exponents rather than using 
av_assert2().
 2011-05-01 13:32:04 -04:00
Mans Rullgard
2310ee4b1c ac3enc: move extract_exponents inner loop to ac3dsp 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-04-04 18:27:22 +01:00
Mans Rullgard
52fd16a264 ac3enc: move compute_mantissa_size() to ac3dsp 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-03-30 01:21:56 +01:00
Mans Rullgard
6d9f52b2cd ac3: move ff_ac3_bit_alloc_calc_bap to ac3dsp 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-03-29 19:31:45 +01:00
Mans Rullgard
f4855a904e ac3enc: NEON optimised ac3_max_msb_abs_int16 and ac3_exponent_min 2011-03-24 16:30:49 +00:00
Mans Rullgard
2912e87a6c Replace FFmpeg with Libav in licence headers 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-03-19 13:33:20 +00:00
Justin Ruggles
0f999cfddb ac3enc: add float_to_fixed24() with x86-optimized versions to AC3DSPContext 
and use in scale_coefficients() for the floating-point AC-3 encoder.
 2011-03-17 16:46:48 -04:00
Justin Ruggles
f1efbca5e9 ac3enc: add SIMD-optimized shifting functions for use with the fixed-point AC3 encoder. 2011-03-14 08:45:31 -04:00
Justin Ruggles
fbb6b49dab ac3enc: Add x86-optimized function to speed up log2_tab(). 
AC3DSPContext.ac3_max_msb_abs_int16() finds the maximum MSB of the absolute
value of each element in an array of int16_t.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
 2011-02-13 16:49:39 -05:00
Justin Ruggles
dda3f0ef48 Add x86-optimized versions of exponent_min(). 
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
 2011-02-10 15:32:47 -05:00