f3c07d4f70
This fixes the cycling rendering loop caused by nesting virtual displays by preventing them from recomposing if their contents haven't changed. (cherry-pick from master I600365c0fd5d3ad93e04295d26cf9de177ffc79b) Bug: 12101046 Change-Id: I6182993d53537781aedb522f97a50f06eed8b80f
87 lines
3.0 KiB
C++
87 lines
3.0 KiB
C++
/*
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* Copyright (C) 2007 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_SF_FRAMEBUFFER_SURFACE_H
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#define ANDROID_SF_FRAMEBUFFER_SURFACE_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <gui/ConsumerBase.h>
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#include "DisplaySurface.h"
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// ---------------------------------------------------------------------------
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namespace android {
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// ---------------------------------------------------------------------------
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class Rect;
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class String8;
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class HWComposer;
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// ---------------------------------------------------------------------------
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class FramebufferSurface : public ConsumerBase,
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public DisplaySurface {
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public:
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FramebufferSurface(HWComposer& hwc, int disp, const sp<IGraphicBufferConsumer>& consumer);
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virtual status_t beginFrame(bool mustRecompose);
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virtual status_t prepareFrame(CompositionType compositionType);
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virtual status_t compositionComplete();
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virtual status_t advanceFrame();
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virtual void onFrameCommitted();
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// Implementation of DisplaySurface::dump(). Note that ConsumerBase also
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// has a non-virtual dump() with the same signature.
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virtual void dump(String8& result) const;
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private:
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virtual ~FramebufferSurface() { }; // this class cannot be overloaded
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virtual void onFrameAvailable();
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virtual void freeBufferLocked(int slotIndex);
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virtual void dumpLocked(String8& result, const char* prefix) const;
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// nextBuffer waits for and then latches the next buffer from the
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// BufferQueue and releases the previously latched buffer to the
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// BufferQueue. The new buffer is returned in the 'buffer' argument.
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status_t nextBuffer(sp<GraphicBuffer>& outBuffer, sp<Fence>& outFence);
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// mDisplayType must match one of the HWC display types
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int mDisplayType;
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// mCurrentBufferIndex is the slot index of the current buffer or
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// INVALID_BUFFER_SLOT to indicate that either there is no current buffer
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// or the buffer is not associated with a slot.
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int mCurrentBufferSlot;
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// mCurrentBuffer is the current buffer or NULL to indicate that there is
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// no current buffer.
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sp<GraphicBuffer> mCurrentBuffer;
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// Hardware composer, owned by SurfaceFlinger.
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HWComposer& mHwc;
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};
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// ---------------------------------------------------------------------------
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}; // namespace android
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// ---------------------------------------------------------------------------
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#endif // ANDROID_SF_FRAMEBUFFER_SURFACE_H
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