79 lines
2.3 KiB
C++
79 lines
2.3 KiB
C++
/*
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* Copyright (C) 2013 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_RS_GRALLOC_CONSUMER_H
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#define ANDROID_RS_GRALLOC_CONSUMER_H
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#include <gui/ConsumerBase.h>
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#include <ui/GraphicBuffer.h>
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#include <utils/String8.h>
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#include <utils/Vector.h>
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#include <utils/threads.h>
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// ---------------------------------------------------------------------------
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namespace android {
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namespace renderscript {
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class Allocation;
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/**
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* CpuConsumer is a BufferQueue consumer endpoint that allows direct CPU
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* access to the underlying gralloc buffers provided by BufferQueue. Multiple
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* buffers may be acquired by it at once, to be used concurrently by the
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* CpuConsumer owner. Sets gralloc usage flags to be software-read-only.
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* This queue is synchronous by default.
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*/
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class GrallocConsumer : public ConsumerBase
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{
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public:
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typedef ConsumerBase::FrameAvailableListener FrameAvailableListener;
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GrallocConsumer(Allocation *, const sp<IGraphicBufferConsumer>& bq, int flags);
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virtual ~GrallocConsumer();
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status_t lockNextBuffer();
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status_t unlockBuffer();
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private:
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status_t releaseAcquiredBufferLocked();
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Allocation *mAlloc;
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// Tracking for buffers acquired by the user
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struct AcquiredBuffer {
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// Need to track the original mSlot index and the buffer itself because
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// the mSlot entry may be freed/reused before the acquired buffer is
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// released.
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int mSlot;
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sp<GraphicBuffer> mGraphicBuffer;
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void *mBufferPointer;
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AcquiredBuffer() :
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mSlot(BufferQueue::INVALID_BUFFER_SLOT),
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mBufferPointer(NULL) {
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}
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};
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AcquiredBuffer mAcquiredBuffer;
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};
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} // namespace renderscript
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} // namespace android
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#endif // ANDROID_RS_GRALLOC_CONSUMER_H
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