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Commit f57c0163 authored by Robert Carr's avatar Robert Carr Committed by Rob Carr
Browse files

ASurfaceTransaction: Add setEnableBackpressure 

Expose the backpressure flag to NDK. See comment in
header file for extensive discussion.

Bug: 177458703
Test: Need new CTS
Change-Id: I97cdaef5d499f57a270972f001517b8a520aa2fe
parent 0f979050

native/android/libandroid.map.txt

+1 −0
Original line number Diff line number Diff line
@@ -252,6 +252,7 @@ LIBANDROID { 
    ASurfaceTransaction_setColor; # introduced=29

    ASurfaceTransaction_setDamageRegion; # introduced=29

    ASurfaceTransaction_setDesiredPresentTime; # introduced=29

    ASurfaceTransaction_setEnableBackPressure; # introduced=31

    ASurfaceTransaction_setFrameRate; # introduced=30

    ASurfaceTransaction_setFrameRateWithSeamlessness; # introduced=31

    ASurfaceTransaction_setGeometry; # introduced=29

native/android/surface_control.cpp

+14 −0
Original line number Diff line number Diff line
@@ -655,3 +655,17 @@ void ASurfaceTransaction_setFrameRateWithSeamlessness(ASurfaceTransaction* aSurf 
    sp<SurfaceControl> surfaceControl = ASurfaceControl_to_SurfaceControl(aSurfaceControl);

    transaction->setFrameRate(surfaceControl, frameRate, compatibility, shouldBeSeamless);

}



void ASurfaceTransaction_setEnableBackPressure(ASurfaceTransaction* aSurfaceTransaction,

                                               ASurfaceControl* aSurfaceControl,

                                               bool enableBackpressure) {

    CHECK_NOT_NULL(aSurfaceControl);

    CHECK_NOT_NULL(aSurfaceTransaction);



    sp<SurfaceControl> surfaceControl = ASurfaceControl_to_SurfaceControl(aSurfaceControl);

    Transaction* transaction = ASurfaceTransaction_to_Transaction(aSurfaceTransaction);



    const uint32_t flags = enableBackpressure ?

                      layer_state_t::eEnableBackpressure : 0;

    transaction->setFlags(surfaceControl, flags, layer_state_t::eEnableBackpressure);

}