Christophe GISQUET
f3e084909b
mpegaudio: replace memcpy by SIMD code
...
By replacing memcpy with an unrolled loop using the alignment knowledge
it has, some speedup can be obtained.
Before (gcc 4.6.1): ~400 cycles
After: ~370 cycles
Overall, around 2% speed increase when decoding a 2400s mp3 to f32le.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2012-02-15 20:11:54 -08:00
Vitor Sessak
39df0c434c
mpegaudiodec: optimized iMDCT transform
...
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
2012-01-08 17:40:55 -08:00
Mans Rullgard
c4f5c2d6f4
Move some mpegaudio functions to new mpegaudiodsp subsystem
...
This separation allows these functions to be used in a cleaner
fashion from other codecs (e.g. qdm2) and simplifies creating
optimised versions of them.
Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-05-19 12:25:34 +01:00
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
Stefano Sabatini
c6c98d0897
Move mm_support() from libavcodec to libavutil, make it a public
...
function and rename it to av_get_cpu_flags().
Originally committed as revision 25076 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-09-08 15:07:14 +00:00
Stefano Sabatini
7160bb716b
Rename FF_MM_ symbols related to CPU features flags as AV_CPU_FLAG_
...
symbols, and move them from libavcodec/avcodec.h to libavutil/cpu.h.
Originally committed as revision 25040 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-09-04 09:59:08 +00:00
Måns Rullgård
c0ec9918b0
Remove global mm_flags variable
...
Originally committed as revision 24909 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-08-24 17:47:05 +00:00
Vitor Sessak
89c7d8058c
Fix compilation on x64.
...
Originally committed as revision 23753 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-06-24 08:53:32 +00:00
Vitor Sessak
57dbd12b6d
Fix asm constraints in apply_window()
...
Originally committed as revision 23752 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-06-24 08:46:47 +00:00
Vitor Sessak
bc2b368215
SSE-optimized MP3 floating point windowing functions
...
Originally committed as revision 23750 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-06-24 07:44:50 +00:00
