Jason Sams | ddceab9 | 2013-08-07 13:02:32 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef ANDROID_RS_GRALLOC_CONSUMER_H |
| 18 | #define ANDROID_RS_GRALLOC_CONSUMER_H |
| 19 | |
| 20 | #include <gui/ConsumerBase.h> |
| 21 | |
| 22 | #include <ui/GraphicBuffer.h> |
| 23 | |
Yang Ni | b8353c5 | 2015-02-14 18:00:59 -0800 | [diff] [blame] | 24 | #include <utils/String8.h> |
| 25 | #include <utils/Vector.h> |
Jason Sams | ddceab9 | 2013-08-07 13:02:32 -0700 | [diff] [blame] | 26 | #include <utils/threads.h> |
| 27 | |
| 28 | |
| 29 | // --------------------------------------------------------------------------- |
| 30 | namespace android { |
| 31 | namespace renderscript { |
| 32 | |
| 33 | class Allocation; |
| 34 | |
| 35 | /** |
| 36 | * CpuConsumer is a BufferQueue consumer endpoint that allows direct CPU |
| 37 | * access to the underlying gralloc buffers provided by BufferQueue. Multiple |
| 38 | * buffers may be acquired by it at once, to be used concurrently by the |
| 39 | * CpuConsumer owner. Sets gralloc usage flags to be software-read-only. |
| 40 | * This queue is synchronous by default. |
| 41 | */ |
| 42 | class GrallocConsumer : public ConsumerBase |
| 43 | { |
| 44 | public: |
| 45 | typedef ConsumerBase::FrameAvailableListener FrameAvailableListener; |
| 46 | |
Jason Sams | 1c19f05 | 2014-11-10 12:11:37 -0800 | [diff] [blame] | 47 | GrallocConsumer(Allocation *, const sp<IGraphicBufferConsumer>& bq, int flags); |
Jason Sams | ddceab9 | 2013-08-07 13:02:32 -0700 | [diff] [blame] | 48 | |
| 49 | virtual ~GrallocConsumer(); |
| 50 | status_t lockNextBuffer(); |
| 51 | status_t unlockBuffer(); |
| 52 | |
| 53 | private: |
| 54 | status_t releaseAcquiredBufferLocked(); |
| 55 | Allocation *mAlloc; |
| 56 | |
| 57 | // Tracking for buffers acquired by the user |
| 58 | struct AcquiredBuffer { |
| 59 | // Need to track the original mSlot index and the buffer itself because |
| 60 | // the mSlot entry may be freed/reused before the acquired buffer is |
| 61 | // released. |
| 62 | int mSlot; |
| 63 | sp<GraphicBuffer> mGraphicBuffer; |
| 64 | void *mBufferPointer; |
| 65 | |
| 66 | AcquiredBuffer() : |
| 67 | mSlot(BufferQueue::INVALID_BUFFER_SLOT), |
Chris Wailes | 44bef6f | 2014-08-12 13:51:10 -0700 | [diff] [blame] | 68 | mBufferPointer(nullptr) { |
Jason Sams | ddceab9 | 2013-08-07 13:02:32 -0700 | [diff] [blame] | 69 | } |
| 70 | }; |
| 71 | AcquiredBuffer mAcquiredBuffer; |
| 72 | }; |
| 73 | |
| 74 | } // namespace renderscript |
| 75 | } // namespace android |
| 76 | |
| 77 | #endif // ANDROID_RS_GRALLOC_CONSUMER_H |
Yang Ni | b8353c5 | 2015-02-14 18:00:59 -0800 | [diff] [blame] | 78 | |