Refactor Layer/ColorLayer into siblings

    FrameTracker.cpp \

    GpuService.cpp \

    Layer.cpp \

    BufferLayer.cpp \

    ColorLayer.cpp \

    LayerRejecter.cpp \

    LayerVector.cpp \

/*

 * Copyright (C) 2017 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#pragma once

#include "Layer.h"

#include "Client.h"

#include "DisplayHardware/HWComposer.h"

#include "DisplayHardware/HWComposerBufferCache.h"

#include "FrameTracker.h"

#include "LayerVector.h"

#include "MonitoredProducer.h"

#include "RenderEngine/Mesh.h"

#include "RenderEngine/Texture.h"

#include "SurfaceFlinger.h"

#include "SurfaceFlingerConsumer.h"

#include "Transform.h"

#include <gui/ISurfaceComposerClient.h>

#include <gui/LayerState.h>

#include <EGL/egl.h>

#include <EGL/eglext.h>

#include <ui/FrameStats.h>

#include <ui/GraphicBuffer.h>

#include <ui/PixelFormat.h>

#include <ui/Region.h>

#include <utils/RefBase.h>

#include <utils/String8.h>

#include <utils/Timers.h>

#include <stdint.h>

#include <sys/types.h>

#include <list>

namespace android {

/*

 * A new BufferQueue and a new SurfaceFlingerConsumer are created when the

 * BufferLayer is first referenced.

 *

 * This also implements onFrameAvailable(), which notifies SurfaceFlinger

 * that new data has arrived.

 */

class BufferLayer : public Layer, public SurfaceFlingerConsumer::ContentsChangedListener {

public:

    BufferLayer(SurfaceFlinger* flinger, const sp<Client>& client, const String8& name, uint32_t w,

                uint32_t h, uint32_t flags);

    ~BufferLayer() override;

    // -----------------------------------------------------------------------

    // Overriden from Layer

    // -----------------------------------------------------------------------

    /*

     * getTypeId - Provide unique string for each class type in the Layer

     * hierarchy

     */

    const char* getTypeId() const override { return "BufferLayer"; }

    /*

     * isProtected - true if the layer may contain protected content in the

     * GRALLOC_USAGE_PROTECTED sense.

     */

    bool isProtected() const;

    /*

     * isVisible - true if this layer is visible, false otherwise

     */

    bool isVisible() const override;

    /*

     * isFixedSize - true if content has a fixed size

     */

    bool isFixedSize() const override;

    // the this layer's size and format

    status_t setBuffers(uint32_t w, uint32_t h, PixelFormat format, uint32_t flags);

    /*

     * onDraw - draws the surface.

     */

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

                bool useIdentityTransform) const override;

    bool onPreComposition(nsecs_t refreshStartTime) override;

#ifdef USE_HWC2

    // If a buffer was replaced this frame, release the former buffer

    void releasePendingBuffer(nsecs_t dequeueReadyTime);

#endif

    /*

     * latchBuffer - called each time the screen is redrawn and returns whether

     * the visible regions need to be recomputed (this is a fairly heavy

     * operation, so this should be set only if needed). Typically this is used

     * to figure out if the content or size of a surface has changed.

     */

    Region latchBuffer(bool& recomputeVisibleRegions, nsecs_t latchTime) override;

    bool isBufferLatched() const override { return mRefreshPending; }

#ifdef USE_HWC2

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

#else

    void setPerFrameData(const sp<const DisplayDevice>& hw, HWComposer::HWCLayerInterface& layer);

#endif

    bool isOpaque(const Layer::State& s) const override;

private:

    void onFirstRef() override;

    // Interface implementation for

    // SurfaceFlingerConsumer::ContentsChangedListener

    void onFrameAvailable(const BufferItem& item) override;

    void onFrameReplaced(const BufferItem& item) override;

    void onSidebandStreamChanged() override;

    // needsLinearFiltering - true if this surface's state requires filtering

    bool needsFiltering(const RenderArea& renderArea) const;

    static bool getOpacityForFormat(uint32_t format);

    // drawing

    void drawWithOpenGL(const RenderArea& renderArea,

            bool useIdentityTransform) const;

    // Temporary - Used only for LEGACY camera mode.

    uint32_t getProducerStickyTransform() const;

    // Loads the corresponding system property once per process

    static bool latchUnsignaledBuffers();

    uint64_t getHeadFrameNumber() const;

    bool headFenceHasSignaled() const;

    // Returns the current scaling mode, unless mOverrideScalingMode

    // is set, in which case, it returns mOverrideScalingMode

    uint32_t getEffectiveScalingMode() const override;

public:

    void notifyAvailableFrames() override;

    PixelFormat getPixelFormat() const override { return mFormat; }

    sp<IGraphicBufferProducer> getProducer() const;

private:

    // Check all of the local sync points to ensure that all transactions

    // which need to have been applied prior to the frame which is about to

    // be latched have signaled

    bool allTransactionsSignaled();

    sp<IGraphicBufferProducer> mProducer;

    // constants

    uint32_t mTextureName; // from GLES

    PixelFormat mFormat;

    // main thread

    uint32_t mCurrentScalingMode;

    bool mBufferLatched = false;   // TODO: Use mActiveBuffer?

    uint64_t mPreviousFrameNumber; // Only accessed on the main thread.

    // The texture used to draw the layer in GLES composition mode

    mutable Texture mTexture;

    bool mUpdateTexImageFailed; // This is only accessed on the main thread.

    bool mRefreshPending;

};

} // namespace android

ColorLayer::ColorLayer(SurfaceFlinger* flinger, const sp<Client>& client,

        const String8& name, uint32_t w, uint32_t h, uint32_t flags)

      : Layer(flinger, client, name, w, h, flags) {

    // drawing state & current state are identical

    mDrawingState = mCurrentState;

}

void ColorLayer::onDraw(const RenderArea& renderArea, const Region& /* clip */,

namespace android {

class ColorLayer : public Layer

{

class ColorLayer : public Layer {

public:

    ColorLayer(SurfaceFlinger* flinger, const sp<Client>& client,

                        const String8& name, uint32_t w, uint32_t h, uint32_t flags);

    virtual const char* getTypeId() const { return "ColorLayer"; }

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

            bool useIdentityTransform) const;

    bool isVisible() const override;

    virtual bool isOpaque(const Layer::State&) const { return false; }

    virtual bool isSecure() const         { return false; }

    virtual bool isFixedSize() const      { return true; }

    virtual bool isVisible() const;

    void notifyAvailableFrames() override {}

    PixelFormat getPixelFormat() const override { return PIXEL_FORMAT_NONE; }

    uint32_t getEffectiveScalingMode() const override { return 0; }

#ifdef USE_HWC2

    void releasePendingBuffer(nsecs_t) override {}

#endif

    Region latchBuffer(bool&, nsecs_t) override { return Region(); }

    bool isBufferLatched() const override { return false; }

    bool onPreComposition(nsecs_t) override { return true; }

};

// ---------------------------------------------------------------------------