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| author | Thomas Jarosch <tomj@simonv.com> | 2011-12-09 20:04:41 +0000 |
|---|---|---|
| committer | Thomas Jarosch <tomj@simonv.com> | 2011-12-09 20:04:41 +0000 |
| commit | 33d3f05d77c8fc2e187d9a8d71588772400bced3 (patch) | |
| tree | 726ad6d48ac1a54d7e3734afacf34a9c77a91f79 | |
| parent | 9d9d867bce364f1381a21c2a09eb7bac6b5c7df2 (diff) | |
| download | rockbox-33d3f05d77c8fc2e187d9a8d71588772400bced3.tar.gz rockbox-33d3f05d77c8fc2e187d9a8d71588772400bced3.zip | |
Nokia N900: Increase the number of samples for the software mixer
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
| -rw-r--r-- | firmware/export/pcm_mixer.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/firmware/export/pcm_mixer.h b/firmware/export/pcm_mixer.h index be10601ffd..ea26060452 100644 --- a/firmware/export/pcm_mixer.h +++ b/firmware/export/pcm_mixer.h | |||
| @@ -28,9 +28,13 @@ | |||
| 28 | #if CONFIG_CPU == PP5002 | 28 | #if CONFIG_CPU == PP5002 |
| 29 | /* There's far less time to do mixing because HW FIFOs are short */ | 29 | /* There's far less time to do mixing because HW FIFOs are short */ |
| 30 | #define MIX_FRAME_SAMPLES 64 | 30 | #define MIX_FRAME_SAMPLES 64 |
| 31 | #else | 31 | #elif (CONFIG_PLATFORM & PLATFORM_MAEMO5) |
| 32 | /* Maemo 5 needs 2048 samples for decent performance. | ||
| 33 | Otherwise the locking overhead inside gstreamer costs too much */ | ||
| 34 | #define MIX_FRAME_SAMPLES 2048 | ||
| 32 | /* Assume HW DMA engine is available or sufficient latency exists in the | 35 | /* Assume HW DMA engine is available or sufficient latency exists in the |
| 33 | PCM pathway */ | 36 | PCM pathway */ |
| 37 | #else | ||
| 34 | #define MIX_FRAME_SAMPLES 256 | 38 | #define MIX_FRAME_SAMPLES 256 |
| 35 | #endif | 39 | #endif |
| 36 | 40 | ||