| 67d8bd66aaf04805cb8f2616ba964141b865e3b9 |
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11-Sep-2014 |
Lajos Molnar <lajos@google.com> |
surfaceflinger: add getDisplayStats() method
This is used by media service to schedule video frames at the
proper time, based on precise vsync timings.
Bug: 14659809
Change-Id: I1a90603f3dc09dca9aa4f90a3aa845fab56e0a5e
/frameworks/native/services/surfaceflinger/DispSync.h
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| 645b1f7ffb41d21a60765d1ec54ba82f14a36a59 |
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10-Jun-2014 |
Andy McFadden <fadden@android.com> |
Replace "lower power mode" experiment
This replaces the previous low-power mode experiment, which
discarded refresh events, with a new experiment that alters
the refresh period.
(see also I2849e5ea335c0d2509fea1c315392bce7f20451d )
The feature is enabled by specifying a nonzero value for the
"refresh skip count", which indicates the number of periods
to skip. For example, the command:
adb shell service call SurfaceFlinger 1016 i32 1
sets a skip count of '1', yielding a 30Hz refresh rate on a device
with a 60Hz display. Changing the last value to '2' would set the
refresh to 20Hz. '0' returns to the default behavior.
Bug 15523257
Change-Id: I00039c22a55750e74035644c63800e4bee1c774a
/frameworks/native/services/surfaceflinger/DispSync.h
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| 5167ec68fed047bf65b1eb0c6091534682135eef |
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22-May-2014 |
Andy McFadden <fadden@android.com> |
Disable DispSync resync when not needed
If app and SF events aren't using phase offsets, we don't need
to maintain the DispSync model. We just turn hardware VSYNC on
whenever something wants to draw. This avoids some edge cases
where we were doing too much resync work.
Also, updated the systrace output. The "VsyncOn" line was a
combination of SF and app event threads, and would occasionally
be very weird. Removed VsyncOn, renamed VSYNC to VSYNC-app,
and added VSYNC-sf.
Also, added more details to the --dispsync dumpsys output.
Also, renamed global constants to not look like local variables.
Bug 15516453
Change-Id: I0da10b72f0d9a7b7eb5202d87cc18967f698adbd
/frameworks/native/services/surfaceflinger/DispSync.h
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| c751e92c56de5f335a36e68607c7a6c627dcd0dc |
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08-May-2014 |
Andy McFadden <fadden@android.com> |
Add "dumpsys SurfaceFlinger --dispsync"
Dumps the current DispSync state.
Bug 14651879
Change-Id: Ide4e6dbd58b117bc1a6b97b57d10cd92ec86dc84
/frameworks/native/services/surfaceflinger/DispSync.h
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| 41d67d7ab4da1c393497a620a116a854b3c618e7 |
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26-Apr-2014 |
Andy McFadden <fadden@android.com> |
Improve SurfaceFlinger PTS estimation
Get the next refresh time from DispSync instead of guessing based
on the current time.
Change-Id: I8dc72a3217bfd4e9b4c905034194d1a298cad69a
/frameworks/native/services/surfaceflinger/DispSync.h
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| f52b3c88f18c0546526996c839fbce74172e11c7 |
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25-Apr-2014 |
Ruchi Kandoi <kandoiruchi@google.com> |
SurfaceFlinger: Adds the functionality to reduce refresh rate to half of
the default.
Feature added for the low power mode.
Change-Id: I2849e5ea335c0d2509fea1c315392bce7f20451d
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
/frameworks/native/services/surfaceflinger/DispSync.h
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| faf77cce9d9ec0238d6999b3bd0d40c71ff403c5 |
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31-Jul-2013 |
Jamie Gennis <jgennis@google.com> |
SurfaceFlinger: SW-based vsync events
This change adds the DispSync class, which models the hardware vsync event
times to allow vsync event callbacks to be done at an arbitrary phase offset
from the hardware vsync. This can be used to reduce the minimum latency from
Choreographer wake-up to on-screen image presentation.
Bug: 10624956
Change-Id: I8c7a54ceacaa4d709726ed97b0dcae4093a7bdcf
/frameworks/native/services/surfaceflinger/DispSync.h
|