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Commit 0e1c05e6 authored by Lloyd Pique's avatar Lloyd Pique
Browse files

SF: Refactor onPreComposition 

Adds LayerFE::onPreComposition call, and adjusts the existing
implementation inside SurfaceFlinger to use it, in preparation to moving
the loop over to CompositionEngine.

Test: atest libsurfaceflinger_unittest libcompositionengine_test
Bug: 121291683
Change-Id: Ibc0fb1e87d37fabba753f265e70982b5ce70f9f2
parent f527548d

services/surfaceflinger/CompositionEngine/include/compositionengine/LayerFE.h

+6 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#pragma once



#include <utils/RefBase.h>

#include <utils/Timers.h>



namespace android {
@@ -30,6 +31,11 @@ struct LayerFECompositionState; 
// of the front-end layer

class LayerFE : public virtual RefBase {

public:

    // Called before composition starts. Should return true if this layer has

    // pending updates which would require an extra display refresh cycle to

    // process.

    virtual bool onPreComposition(nsecs_t refreshStartTime) = 0;



    // Latches the output-independent state. If includeGeometry is false, the

    // geometry state can be skipped.

    virtual void latchCompositionState(LayerFECompositionState&, bool includeGeometry) const = 0;

services/surfaceflinger/CompositionEngine/include/compositionengine/mock/LayerFE.h

+2 −0
Original line number Diff line number Diff line
@@ -30,6 +30,8 @@ public: 
    LayerFE();

    virtual ~LayerFE();



    MOCK_METHOD1(onPreComposition, bool(nsecs_t));



    MOCK_CONST_METHOD2(latchCompositionState, void(LayerFECompositionState&, bool));

    MOCK_METHOD1(onLayerDisplayed, void(const sp<Fence>&));

services/surfaceflinger/Layer.h

+0 −6
Original line number Diff line number Diff line
@@ -484,12 +484,6 @@ public: 
    virtual bool shouldPresentNow(nsecs_t /*expectedPresentTime*/) const { return false; }

    virtual void setTransformHint(uint32_t /*orientation*/) const { }



    /*

     * called before composition.

     * returns true if the layer has pending updates.

     */

    virtual bool onPreComposition(nsecs_t refreshStartTime) = 0;



    /*

     * called after composition.

     * returns true if the layer latched a new buffer this frame.

services/surfaceflinger/SurfaceFlinger.cpp

+7 −2
Original line number Diff line number Diff line
@@ -1962,9 +1962,14 @@ void SurfaceFlinger::preComposition() 


    bool needExtraInvalidate = false;

    mDrawingState.traverseInZOrder([&](Layer* layer) {

        if (layer->onPreComposition(mRefreshStartTime)) {

        auto compositionLayer = layer->getCompositionLayer();

        if (compositionLayer) {

            auto layerFE = compositionLayer->getLayerFE();



            if (layerFE && layerFE->onPreComposition(mRefreshStartTime)) {

                needExtraInvalidate = true;

            }

        }

    });



    if (needExtraInvalidate) {