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* Copyright (C) 2007 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 <stdint.h>
#include <sys/types.h>
#include <compositionengine/DisplaySurface.h>
#include <compositionengine/impl/HwcBufferCache.h>
#include <gui/ConsumerBase.h>
#include "DisplayIdentification.h"
// ---------------------------------------------------------------------------
namespace android {
// ---------------------------------------------------------------------------
class Rect;
class String8;
class HWComposer;
// ---------------------------------------------------------------------------
class FramebufferSurface : public ConsumerBase, public compositionengine::DisplaySurface {
FramebufferSurface(HWComposer& hwc, DisplayId displayId,
const sp<IGraphicBufferConsumer>& consumer);
virtual status_t beginFrame(bool mustRecompose);
virtual status_t prepareFrame(CompositionType compositionType);
virtual status_t advanceFrame();
virtual void onFrameCommitted();
virtual void dumpAsString(String8& result) const;
virtual void resizeBuffers(const uint32_t width, const uint32_t height);
virtual const sp<Fence>& getClientTargetAcquireFence() const override;
virtual ~FramebufferSurface() { }; // this class cannot be overloaded
virtual void freeBufferLocked(int slotIndex);
virtual void dumpLocked(String8& result, const char* prefix) const;
// nextBuffer waits for and then latches the next buffer from the
// BufferQueue and releases the previously latched buffer to the
// BufferQueue. The new buffer is returned in the 'buffer' argument.
status_t nextBuffer(uint32_t& outSlot, sp<GraphicBuffer>& outBuffer,
sp<Fence>& outFence, ui::Dataspace& outDataspace);
const DisplayId mDisplayId;
// mCurrentBufferIndex is the slot index of the current buffer or
// INVALID_BUFFER_SLOT to indicate that either there is no current buffer
// or the buffer is not associated with a slot.
int mCurrentBufferSlot;
// mDataSpace is the dataspace of the current composition buffer for
// this FramebufferSurface. It will be 0 when HWC is doing the
// compositing. Otherwise it will display the dataspace of the buffer
// use for compositing which can change as wide-color content is
// on/off.
ui::Dataspace mDataSpace;
// mCurrentBuffer is the current buffer or nullptr to indicate that there is
// no current buffer.
sp<GraphicBuffer> mCurrentBuffer;
// mCurrentFence is the current buffer's acquire fence
sp<Fence> mCurrentFence;
// Hardware composer, owned by SurfaceFlinger.
HWComposer& mHwc;
compositionengine::impl::HwcBufferCache mHwcBufferCache;
// Previous buffer to release after getting an updated retire fence
bool mHasPendingRelease;
int mPreviousBufferSlot;
sp<GraphicBuffer> mPreviousBuffer;
// ---------------------------------------------------------------------------
}; // namespace android
// ---------------------------------------------------------------------------