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Commit dc5e0627 authored by David Sodman's avatar David Sodman
Browse files

SF: Add support for screen captures 

Add Layer::drawNow to support capturing portions
of the screen in the FE, as this is not tied
to vsync

Test: Compile/Run manually
Merged-Id: I0781d44240ae127a6e70b35282a02cbedfe36fe4
Change-Id: I0781d44240ae127a6e70b35282a02cbedfe36fe4
parent d0d8f5c8

services/surfaceflinger/BufferLayer.cpp

+26 −10
Original line number Diff line number Diff line
@@ -160,6 +160,8 @@ void BufferLayer::onDraw(const RenderArea& renderArea, const Region& clip, 
                         bool useIdentityTransform) const {

    ATRACE_CALL();



    CompositionInfo& compositionInfo = getBE().compositionInfo;



    if (CC_UNLIKELY(mActiveBuffer == 0)) {

        // the texture has not been created yet, this Layer has

        // in fact never been drawn into. This happens frequently with
@@ -241,6 +243,7 @@ void BufferLayer::onDraw(const RenderArea& renderArea, const Region& clip, 
        mTexture.setDimensions(mActiveBuffer->getWidth(), mActiveBuffer->getHeight());

        mTexture.setFiltering(useFiltering);

        mTexture.setMatrix(textureMatrix);

        compositionInfo.re.texture = mTexture;



        engine.setupLayerTexturing(mTexture);

    } else {
@@ -250,6 +253,23 @@ void BufferLayer::onDraw(const RenderArea& renderArea, const Region& clip, 
    engine.disableTexturing();

}



void BufferLayer::drawNow(const RenderArea& renderArea, bool useIdentityTransform) const {

    CompositionInfo& compositionInfo = getBE().compositionInfo;

    auto& engine(mFlinger->getRenderEngine());



    draw(renderArea, useIdentityTransform);



    engine.setupLayerTexturing(compositionInfo.re.texture);

    engine.setupLayerBlending(compositionInfo.re.preMultipliedAlpha, compositionInfo.re.opaque,

            false, compositionInfo.re.color);

    engine.setSourceDataSpace(compositionInfo.hwc.dataspace);

    engine.setSourceY410BT2020(compositionInfo.re.Y410BT2020);

    engine.drawMesh(getBE().getMesh());

    engine.disableBlending();

    engine.disableTexturing();

    engine.setSourceY410BT2020(false);

}



void BufferLayer::onLayerDisplayed(const sp<Fence>& releaseFence) {

    mConsumer->setReleaseFence(releaseFence);

}
@@ -810,21 +830,17 @@ void BufferLayer::drawWithOpenGL(const RenderArea& renderArea, bool useIdentityT 
    texCoords[2] = vec2(right, 1.0f - bottom);

    texCoords[3] = vec2(right, 1.0f - top);



    auto& engine(mFlinger->getRenderEngine());

    engine.setupLayerBlending(mPremultipliedAlpha, isOpaque(s), false /* disableTexture */,

                              getColor());

    engine.setSourceDataSpace(mCurrentState.dataSpace);

    getBE().compositionInfo.re.preMultipliedAlpha = mPremultipliedAlpha;

    getBE().compositionInfo.re.opaque = isOpaque(s);

    getBE().compositionInfo.re.disableTexture = false;

    getBE().compositionInfo.re.color = getColor();

    getBE().compositionInfo.hwc.dataspace = mCurrentState.dataSpace;



    if (mCurrentState.dataSpace == HAL_DATASPACE_BT2020_ITU_PQ &&

        mConsumer->getCurrentApi() == NATIVE_WINDOW_API_MEDIA &&

        getBE().compositionInfo.mBuffer->getPixelFormat() == HAL_PIXEL_FORMAT_RGBA_1010102) {

        engine.setSourceY410BT2020(true);

        getBE().compositionInfo.re.Y410BT2020 = true;

    }



    engine.drawMesh(getBE().mMesh);

    engine.disableBlending();



    engine.setSourceY410BT2020(false);

}



uint32_t BufferLayer::getProducerStickyTransform() const {

services/surfaceflinger/BufferLayer.h

+1 −0
Original line number Diff line number Diff line
@@ -101,6 +101,7 @@ public: 
     */

    void onDraw(const RenderArea& renderArea, const Region& clip,

                bool useIdentityTransform) const override;

    void drawNow(const RenderArea& renderArea, bool useIdentityTransform) const;



    void onLayerDisplayed(const sp<Fence>& releaseFence) override;

services/surfaceflinger/ColorLayer.cpp

+18 −7
Original line number Diff line number Diff line
@@ -46,15 +46,26 @@ void ColorLayer::onDraw(const RenderArea& renderArea, const Region& /* clip */, 
                        bool useIdentityTransform) const {

    const State& s(getDrawingState());

    if (s.color.a > 0) {

        Mesh mesh(Mesh::TRIANGLE_FAN, 4, 2);

        computeGeometry(renderArea, mesh, useIdentityTransform);

        computeGeometry(renderArea, getBE().mMesh, useIdentityTransform);

        getBE().compositionInfo.re.preMultipliedAlpha = getPremultipledAlpha();

        getBE().compositionInfo.re.opaque = false;

        getBE().compositionInfo.re.disableTexture = true;

        getBE().compositionInfo.re.color = s.color;

    }

}



void ColorLayer::drawNow(const RenderArea& renderArea, bool useIdentityTransform) const {

    CompositionInfo& compositionInfo = getBE().compositionInfo;

    auto& engine(mFlinger->getRenderEngine());

        engine.setupLayerBlending(getPremultipledAlpha(), false /* opaque */,

                                  true /* disableTexture */, s.color);

        engine.drawMesh(mesh);



    draw(renderArea, useIdentityTransform);



    engine.setupLayerBlending(compositionInfo.re.preMultipliedAlpha, compositionInfo.re.opaque,

            compositionInfo.re.disableTexture, compositionInfo.re.color);

    engine.setSourceDataSpace(compositionInfo.hwc.dataspace);

    engine.drawMesh(getBE().getMesh());

    engine.disableBlending();

}

}



bool ColorLayer::isVisible() const {

    const Layer::State& s(getDrawingState());

services/surfaceflinger/ColorLayer.h

+1 −0
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ public: 
    virtual const char* getTypeId() const { return "ColorLayer"; }

    virtual void onDraw(const RenderArea& renderArea, const Region& clip,

                        bool useIdentityTransform) const;

    void drawNow(const RenderArea& , bool ) const;

    bool isVisible() const override;



    void setPerFrameData(const sp<const DisplayDevice>& displayDevice) override;

services/surfaceflinger/ContainerLayer.cpp

+2 −0
Original line number Diff line number Diff line
@@ -30,6 +30,8 @@ ContainerLayer::ContainerLayer(SurfaceFlinger* flinger, const sp<Client>& client 


void ContainerLayer::onDraw(const RenderArea&, const Region& /* clip */, bool) const {}



void ContainerLayer::drawNow(const RenderArea&, bool) const {}



bool ContainerLayer::isVisible() const {

    return !isHiddenByPolicy();

}