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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 | c9d3ae3294832b6993bf97715ed7177e5539e25a (patch) | |
| tree | f4b18e95b92c4e1fdd5ce5dcadb87a80cc0ccd5a /audio/ril_interface.c | |
| parent | 163902bbc01a2c1dd92f2849506d187085aadd60 (diff) | |
| download | device_samsung_tuna-c9d3ae3294832b6993bf97715ed7177e5539e25a.zip device_samsung_tuna-c9d3ae3294832b6993bf97715ed7177e5539e25a.tar.gz device_samsung_tuna-c9d3ae3294832b6993bf97715ed7177e5539e25a.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