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79 lines
2.4 KiB
79 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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