1585c4d9fb
When acquiring a buffer, SurfaceFlinger now computes the expected presentation time and passes it to the BufferQueue acquireBuffer() method. If it's not yet time to display the buffer, acquireBuffer() returns PRESENT_LATER instead of a buffer. The current implementation of the expected-present-time computation uses approximations and guesswork. Bug 7900302 Change-Id: If9345611c5983a11a811935aaf27d6388a5036f1
63 lines
2.0 KiB
C++
63 lines
2.0 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 <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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SurfaceFlingerConsumer(GLuint tex, bool allowSynchronousMode = true,
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GLenum texTarget = GL_TEXTURE_EXTERNAL_OES, bool useFenceSync = true,
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const sp<BufferQueue> &bufferQueue = 0)
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: GLConsumer(tex, allowSynchronousMode, texTarget, useFenceSync,
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bufferQueue)
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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 BufferQueue::BufferItem& item) = 0;
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protected:
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virtual ~BufferRejecter() { }
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};
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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);
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// See GLConsumer::bindTextureImageLocked().
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status_t bindTextureImage();
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private:
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nsecs_t computeExpectedPresent();
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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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