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10 commits

Author SHA1 Message Date
Michael Sevakis
91bdc3ea90 Optimized DSP sample out functions for armv6. (For stereo output) ~9% faster than SVN asm and about 4% faster than SVN asm rearranged to observe pipeline hazards. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25717 a1c6a512-1295-4272-9138-f99709370657
 2010-04-25 20:04:47 +00:00
Andree Buschmann
6999e5debe Use r12 to save 1 register. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25597 a1c6a512-1295-4272-9138-f99709370657
 2010-04-11 19:08:44 +00:00
Andree Buschmann
efb702dc9b Add arm assembler for dsp_apply_gain(). Speeds up this routine by 30-40% on PP502x. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25596 a1c6a512-1295-4272-9138-f99709370657
 2010-04-11 19:02:43 +00:00
Jens Arnold
02c031709c * ARM asm DSP and codec/plugin functions: Use r12 scratch register properly 
* Fix saving another unused reg in dsp code
* Use less regs in the generic ARM mpegplayer adding idct pure DC case
* Fix ARMv6 mpegplayer adding idct using an unsaved register in pure DC case


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21803 a1c6a512-1295-4272-9138-f99709370657
 2009-07-12 13:14:35 +00:00
Steve Bavin
fb2380790e FS#8894 - Add time stretching feature to all SWCODEC targets - the current algorithm is best for spoken word. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21258 a1c6a512-1295-4272-9138-f99709370657
 2009-06-12 07:20:50 +00:00
Daniel Stenberg
2acc0ac542 Updated our source code header to explicitly mention that we are GPL v2 or 
later. We still need to hunt down snippets used that are not. 1324 modified
files...
http://www.rockbox.org/mail/archive/rockbox-dev-archive-2008-06/0060.shtml


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17847 a1c6a512-1295-4272-9138-f99709370657
 2008-06-28 18:10:04 +00:00
Andree Buschmann
fd052ec753 Commit FS#8750. Add ARM assembler for the dsp-functions channels_process_sound_chan_mono(), channels_process_sound_chan_karaoke(), sample_output_mono() and sample_output_stereo(). By measurement the speed up is ~75% for the first three functions and ~40% for sample_output_stereo(). Additionally avoid calling yield() to often in dsp.c -- it is now limited to once per tick. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16717 a1c6a512-1295-4272-9138-f99709370657
 2008-03-19 13:55:53 +00:00
Thom Johansen
1b05ea8ffe ARM assembler for resampling. Should provide some gains, though not huge ones. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12732 a1c6a512-1295-4272-9138-f99709370657
 2007-03-11 23:33:58 +00:00
Thom Johansen
9636c1b61e Adapt ARM crossfeed assembler to work like the Coldfire one. Remove SWITCHPARAM cruft as it's no longer needed. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12507 a1c6a512-1295-4272-9138-f99709370657
 2007-02-27 17:33:23 +00:00
Thom Johansen
56f2ca74ad Assembler optimised crossfeed routine for ARM. Performance improvement is more than double. Should work fine, but watch your ears nevertheless. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10608 a1c6a512-1295-4272-9138-f99709370657
 2006-08-16 12:38:49 +00:00