Commit Graph

15 Commits

Author SHA1 Message Date
Michael Niedermayer
61ad2b42a1 Merge commit 'd961a79eb07a8911540a0bd356d68ae0cf93c6a1'
* commit 'd961a79eb07a8911540a0bd356d68ae0cf93c6a1':
  sbrdsp: move #if to disable all educational code

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-03-18 19:59:00 +01:00
Janne Grunau
d961a79eb0 sbrdsp: move #if to disable all educational code
Avoids a warning of the unused function 'autocorrelate'.
2014-03-18 13:08:00 +01:00
Thilo Borgmann
d814a839ac Reinstate proper FFmpeg license for all files. 2013-08-30 15:47:38 +00:00
Michael Niedermayer
711c8ee71d Merge commit '4a7af92cc80ced8498626401ed21f25ffe6740c8'
* commit '4a7af92cc80ced8498626401ed21f25ffe6740c8':
  sbrdsp: Unroll and use integer operations
  sbrdsp: Unroll sbr_autocorrelate_c
  x86: sbrdsp: Implement SSE2 qmf_deint_bfly

Conflicts:
	libavcodec/sbrdsp.c
	libavcodec/x86/sbrdsp.asm
	libavcodec/x86/sbrdsp_init.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2013-05-04 10:07:43 +02:00
Christophe Gisquet
4a7af92cc8 sbrdsp: Unroll and use integer operations
This patch can be controversial, by assuming floats are IEEE-754 and
particular behaviour of the FPU will get in the way.
Timing on Arrandale and Win32 (thus, x87 FPU is used in the reference).

sbr_qmf_pre_shuffle_c: 115 to 76
sbr_neg_odd_64_c: 84 to 55
sbr_qmf_post_shuffle_c: 112 to 83

Signed-off-by: Diego Biurrun <diego@biurrun.de>
2013-05-03 18:23:30 +02:00
Christophe Gisquet
8394d9a676 sbrdsp: Unroll sbr_autocorrelate_c
1410 cycles to 1148 on Arrandale/Win64

Signed-off-by: Diego Biurrun <diego@biurrun.de>
2013-05-03 18:23:30 +02:00
Christophe Gisquet
11774169ae sbrdsp: unroll and use integer operations
This patch can be controversial, by assuming floats are IEEE-754 and
particular behaviour of the FPU will get in the way.
Timing on Arrandale and Win32 (thus, x87 FPU is used in the reference).

sbr_qmf_pre_shuffle_c: 115 to 76
sbr_neg_odd_64_c: 84 to 55
sbr_qmf_post_shuffle_c: 112 to 83

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-04-06 15:52:42 +02:00
Christophe Gisquet
f4ac80227b sbrdsp: unroll sbr_autocorrelate_c
1410 cycles to 1148 on Arrandale/Win64.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-04-06 15:52:42 +02:00
Mirjana Vulin
8d2eb5fe58 mips: optimization for float aac decoder (sbr module)
Signed-off-by: Mirjana Vulin <mvulin@mips.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-02-21 22:43:08 +01:00
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
Christophe GISQUET
dabf8dd34a SBR DSP: unroll sum_square
The length is even, so some unrolling can be performed. Timings are for x86:
- 32bits: 102c -> 82c
- 64bits:  82c -> 69c

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2012-03-07 10:29:52 -08:00
Christophe GISQUET
34454c761f SBR DSP x86: implement SSE sbr_sum_square_sse
The 32bits targets have been compiled with -mfpmath=sse for proper reference.
sbr_sum_square C  /32bits: 82c (unrolled)/102c
               C  /64bits: 69c (unrolled)/82c
               SSE/32bits: 42c
               SSE/64bits: 31c

Use of SSE4.1 dpps to perform the final sum is slower.
Not unrolling to perform 8 operations in a loop yields 10 more cycles.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2012-02-23 15:50:06 -08:00
Christophe GISQUET
2e74a5abc2 SBR DSP: use intptr_t for the ixh parameter.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2012-02-23 15:48:40 -08:00
Mans Rullgard
be822d77b6 aacsbr: ARM NEON optimised sbrdsp functions
Overall speedup of HE-AAC decoding 2.3x on Cortex-A8, 1.2x on A9.

Signed-off-by: Mans Rullgard <mans@mansr.com>
2012-01-28 14:56:18 +00:00
Mans Rullgard
aac46e088d aacsbr: move some simdable loops to function pointers
This prepares for assembly optimisations by moving the most
time-consuming loops to functions called through pointers
in a new context.

Signed-off-by: Mans Rullgard <mans@mansr.com>
2012-01-28 14:56:18 +00:00