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80 lines
2.4 KiB
80 lines
2.4 KiB
/*
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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 <media/NdkImage.h>
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#include <media/NdkImageReader.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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class Context;
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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
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{
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public:
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GrallocConsumer(const Context *, Allocation *, uint32_t numAlloc);
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virtual ~GrallocConsumer();
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ANativeWindow* getNativeWindow();
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media_status_t lockNextBuffer(uint32_t idx = 0);
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media_status_t unlockBuffer(uint32_t idx = 0);
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uint32_t getNextAvailableIdx(Allocation *a);
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bool releaseIdx(uint32_t idx);
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bool isActive();
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uint32_t mNumAlloc;
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static void onFrameAvailable(void* obj, AImageReader* reader);
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private:
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media_status_t releaseAcquiredBufferLocked(uint32_t idx);
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// Boolean array to check if a position has been occupied or not.
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bool *isIdxUsed;
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Allocation **mAlloc;
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const Context *mCtx;
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AImageReader* mImgReader;
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ANativeWindow* mNativeWindow;
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AImageReader_ImageListener mReaderCb;
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// Tracking for buffers acquired by the user
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struct AcquiredBuffer {
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AImage *mImg;
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uint8_t *mBufferPointer;
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AcquiredBuffer() :
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mImg(nullptr),
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mBufferPointer(nullptr) {
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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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