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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.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16717 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Andree Buschmann 2008-03-19 13:55:53 +00:00
parent 178df1cfcf
commit fd052ec753
3 changed files with 189 additions and 1 deletions
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4
apps/dsp_asm.h
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@ -26,6 +26,10 @@
#if defined(CPU_ARM)
#define DSP_HAVE_ASM_RESAMPLING
#define DSP_HAVE_ASM_CROSSFEED
#define DSP_HAVE_ASM_SOUND_CHAN_MONO
#define DSP_HAVE_ASM_SOUND_CHAN_KARAOKE
#define DSP_HAVE_ASM_SAMPLE_OUTPUT_MONO
#define DSP_HAVE_ASM_SAMPLE_OUTPUT_STEREO
#elif defined (CPU_COLDFIRE)
#define DSP_HAVE_ASM_APPLY_GAIN
#define DSP_HAVE_ASM_RESAMPLING