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Nokia N900: Increase the number of samples for the software mixer

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This lowers the CPU usage back to normal by around 15%.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31191 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Thomas Jarosch 2011-12-09 20:04:41 +00:00
parent 9d9d867bce
commit 33d3f05d77
1 changed files with 5 additions and 1 deletions
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6
firmware/export/pcm_mixer.h
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@ -28,9 +28,13 @@
#if CONFIG_CPU == PP5002
/* There's far less time to do mixing because HW FIFOs are short */
#define MIX_FRAME_SAMPLES 64
#else
#elif (CONFIG_PLATFORM & PLATFORM_MAEMO5)
/* Maemo 5 needs 2048 samples for decent performance.
Otherwise the locking overhead inside gstreamer costs too much */
#define MIX_FRAME_SAMPLES 2048
/* Assume HW DMA engine is available or sufficient latency exists in the
PCM pathway */
#else
#define MIX_FRAME_SAMPLES 256
#endif