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
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
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
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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
Mans Rullgard
97cb9236cf
ac3: move ac3_downmix() from dsputil to ac3dsp
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Signed-off-by: Mans Rullgard <mans@mansr.com>
2012-09-12 23:39:50 +01:00
Justin Ruggles
6ca23db9cc
ac3enc: modify mantissa bit counting to keep bap counts for all values of bap
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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
Mans Rullgard
2310ee4b1c
ac3enc: move extract_exponents inner loop to ac3dsp
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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
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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
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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
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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().
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Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2011-02-10 15:32:47 -05:00
