e64a79cd85
This changes the way that SurfaceFlinger's shadow buffer management
works such that instead of tracking the size of the shadow queue in the
BufferQueue, SF tracks the last frame number it has seen, and passes
that into the acquireBuffer call. BufferQueueConsumer then ensures that
it never returns a buffer newer than that frame number, even if that
means that it must return PRESENT_LATER for an otherwise valid buffer.
Change-Id: I3fcb45f683ed660c3f18a8b85ae1f8a962ba6f0e
(cherry picked from commit a4650a50a0)
95 lines
3.2 KiB
C++
95 lines
3.2 KiB
C++
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_SURFACEFLINGERCONSUMER_H
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#define ANDROID_SURFACEFLINGERCONSUMER_H
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#include "DispSync.h"
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#include <gui/GLConsumer.h>
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namespace android {
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// ----------------------------------------------------------------------------
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/*
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* This is a thin wrapper around GLConsumer.
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*/
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class SurfaceFlingerConsumer : public GLConsumer {
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public:
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static const status_t BUFFER_REJECTED = UNKNOWN_ERROR + 8;
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struct ContentsChangedListener: public FrameAvailableListener {
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virtual void onSidebandStreamChanged() = 0;
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};
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SurfaceFlingerConsumer(const sp<IGraphicBufferConsumer>& consumer,
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uint32_t tex)
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: GLConsumer(consumer, tex, GLConsumer::TEXTURE_EXTERNAL, false, false),
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mTransformToDisplayInverse(false), mSurfaceDamage()
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{}
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class BufferRejecter {
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friend class SurfaceFlingerConsumer;
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virtual bool reject(const sp<GraphicBuffer>& buf,
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const BufferItem& item) = 0;
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protected:
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virtual ~BufferRejecter() { }
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};
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virtual status_t acquireBufferLocked(BufferItem *item, nsecs_t presentWhen,
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uint64_t maxFrameNumber = 0) override;
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// This version of updateTexImage() takes a functor that may be used to
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// reject the newly acquired buffer. Unlike the GLConsumer version,
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// this does not guarantee that the buffer has been bound to the GL
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// texture.
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status_t updateTexImage(BufferRejecter* rejecter, const DispSync& dispSync,
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uint64_t maxFrameNumber = 0);
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// See GLConsumer::bindTextureImageLocked().
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status_t bindTextureImage();
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// must be called from SF main thread
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bool getTransformToDisplayInverse() const;
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const Region& getSurfaceDamage() const;
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// Sets the contents changed listener. This should be used instead of
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// ConsumerBase::setFrameAvailableListener().
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void setContentsChangedListener(const wp<ContentsChangedListener>& listener);
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sp<NativeHandle> getSidebandStream() const;
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nsecs_t computeExpectedPresent(const DispSync& dispSync);
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private:
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virtual void onSidebandStreamChanged();
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wp<ContentsChangedListener> mContentsChangedListener;
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// Indicates this buffer must be transformed by the inverse transform of the screen
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// it is displayed onto. This is applied after GLConsumer::mCurrentTransform.
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// This must be set/read from SurfaceFlinger's main thread.
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bool mTransformToDisplayInverse;
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// The portion of this surface that has changed since the previous frame
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Region mSurfaceDamage;
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};
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// ----------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_SURFACEFLINGERCONSUMER_H
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