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author | Andy McFadden <fadden@android.com> | 2014-04-25 16:58:34 -0700 |
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committer | Andy McFadden <fadden@android.com> | 2014-05-02 10:56:54 -0700 |
commit | 41d67d7ab4da1c393497a620a116a854b3c618e7 (patch) | |
tree | 82c09ea2fd772f1c8e0b527f8bb45948ab9b92d8 /services/surfaceflinger/DispSync.h | |
parent | c526c35e7398ad06185ea0575a976933b433441d (diff) | |
download | frameworks_native-41d67d7ab4da1c393497a620a116a854b3c618e7.zip frameworks_native-41d67d7ab4da1c393497a620a116a854b3c618e7.tar.gz frameworks_native-41d67d7ab4da1c393497a620a116a854b3c618e7.tar.bz2 |
Improve SurfaceFlinger PTS estimation
Get the next refresh time from DispSync instead of guessing based
on the current time.
Change-Id: I8dc72a3217bfd4e9b4c905034194d1a298cad69a
Diffstat (limited to 'services/surfaceflinger/DispSync.h')
-rw-r--r-- | services/surfaceflinger/DispSync.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/services/surfaceflinger/DispSync.h b/services/surfaceflinger/DispSync.h index c2ae135..5826a78 100644 --- a/services/surfaceflinger/DispSync.h +++ b/services/surfaceflinger/DispSync.h @@ -83,7 +83,7 @@ public: bool addResyncSample(nsecs_t timestamp); void endResync(); - // The setPreiod method sets the vsync event model's period to a specific + // The setPeriod method sets the vsync event model's period to a specific // value. This should be used to prime the model when a display is first // turned on. It should NOT be used after that. void setPeriod(nsecs_t period); @@ -102,6 +102,12 @@ public: // DispSync object. status_t removeEventListener(const sp<Callback>& callback); + // computeNextRefresh computes when the next refresh is expected to begin. + // The periodOffset value can be used to move forward or backward; an + // offset of zero is the next refresh, -1 is the previous refresh, 1 is + // the refresh after next. etc. + nsecs_t computeNextRefresh(int periodOffset) const; + private: void updateModelLocked(); |