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* Copyright (C) 2012 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
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
#include "DispSync.h"
#include <ui/Region.h>
#include <gui/GLConsumer.h>
namespace android {
// ----------------------------------------------------------------------------
class Layer;
* This is a thin wrapper around GLConsumer.
class SurfaceFlingerConsumer : public GLConsumer {
static const status_t BUFFER_REJECTED = UNKNOWN_ERROR + 8;
struct ContentsChangedListener: public FrameAvailableListener {
virtual void onSidebandStreamChanged() = 0;
SurfaceFlingerConsumer(const sp<IGraphicBufferConsumer>& consumer,
uint32_t tex, Layer* layer)
: GLConsumer(consumer, tex, GLConsumer::TEXTURE_EXTERNAL, false, false),
mTransformToDisplayInverse(false), mSurfaceDamage(), mLayer(layer)
class BufferRejecter {
friend class SurfaceFlingerConsumer;
virtual bool reject(const sp<GraphicBuffer>& buf,
const BufferItem& item) = 0;
virtual ~BufferRejecter() { }
virtual status_t acquireBufferLocked(BufferItem *item, nsecs_t presentWhen,
uint64_t maxFrameNumber = 0) override;
// This version of updateTexImage() takes a functor that may be used to
// reject the newly acquired buffer. Unlike the GLConsumer version,
// this does not guarantee that the buffer has been bound to the GL
// texture.
status_t updateTexImage(BufferRejecter* rejecter, const DispSync& dispSync,
bool* autoRefresh, bool* queuedBuffer,
uint64_t maxFrameNumber);
// See GLConsumer::bindTextureImageLocked().
status_t bindTextureImage();
bool getTransformToDisplayInverse() const;
// must be called from SF main thread
const Region& getSurfaceDamage() const;
// Sets the contents changed listener. This should be used instead of
// ConsumerBase::setFrameAvailableListener().
void setContentsChangedListener(const wp<ContentsChangedListener>& listener);
sp<NativeHandle> getSidebandStream() const;
nsecs_t computeExpectedPresent(const DispSync& dispSync);
sp<Fence> getPrevFinalReleaseFence() const;
#ifdef USE_HWC2
virtual void setReleaseFence(const sp<Fence>& fence) override;
bool releasePendingBuffer();
void onDisconnect() override;
void addAndGetFrameTimestamps(
const NewFrameEventsEntry* newTimestamps,
FrameEventHistoryDelta* outDelta) override;
virtual void onSidebandStreamChanged();
wp<ContentsChangedListener> mContentsChangedListener;
// Indicates this buffer must be transformed by the inverse transform of the screen
// it is displayed onto. This is applied after GLConsumer::mCurrentTransform.
// This must be set/read from SurfaceFlinger's main thread.
bool mTransformToDisplayInverse;
// The portion of this surface that has changed since the previous frame
Region mSurfaceDamage;
#ifdef USE_HWC2
// A release that is pending on the receipt of a new release fence from
// presentDisplay
PendingRelease mPendingRelease;
// The layer for this SurfaceFlingerConsumer
const wp<Layer> mLayer;
// ----------------------------------------------------------------------------
}; // namespace android