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| author | Eric Laurent <elaurent@google.com> | 2011-10-13 08:46:22 -0700 |
|---|---|---|
| committer | Eric Laurent <elaurent@google.com> | 2011-10-14 12:35:31 -0700 |
| commit | 753a1248b3619407078f68074de390a8c47d6fe7 (patch) | |
| tree | fb7a703bd4c195a22c80f02818fadc1696d7c0d6 /audio/ril_interface.c | |
| parent | 010eee35ae2b149f7c4c036e9d9c45d8cab8adc6 (diff) | |
| download | device_samsung_tuna-753a1248b3619407078f68074de390a8c47d6fe7.zip device_samsung_tuna-753a1248b3619407078f68074de390a8c47d6fe7.tar.gz device_samsung_tuna-753a1248b3619407078f68074de390a8c47d6fe7.tar.bz2 | |
audio HAL: support for low power audio
Implement a mechanism to dynamically switch between short and long
buffers in kernel pcm driver. Using long buffer significantly
decreases power consumption at the expense of latency.
Therefore a hint is given to audio HAL by AudioService indicating
when the screen is off and low latency is not required any more because
neither video playback, VoIP/video chat or any user interaction is expected.
This mechanism relies on the support for MMAP and NO IRQ write modes in
tinyalsa.
Change-Id: Ida9216a141750137a0592187e24a68f263ef3fbe
Diffstat (limited to 'audio/ril_interface.c')
0 files changed, 0 insertions, 0 deletions