Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 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 MEDIA_BUFFER_GROUP_H_ |
| 18 | |
| 19 | #define MEDIA_BUFFER_GROUP_H_ |
| 20 | |
Andreas Huber | 09daada | 2009-08-18 11:27:32 -0700 | [diff] [blame] | 21 | #include <media/stagefright/MediaBuffer.h> |
Andreas Huber | e46b7be | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 22 | #include <utils/Errors.h> |
| 23 | #include <utils/threads.h> |
| 24 | |
| 25 | namespace android { |
| 26 | |
| 27 | class MediaBuffer; |
| 28 | class MetaData; |
| 29 | |
| 30 | class MediaBufferGroup : public MediaBufferObserver { |
| 31 | public: |
| 32 | MediaBufferGroup(); |
| 33 | ~MediaBufferGroup(); |
| 34 | |
| 35 | void add_buffer(MediaBuffer *buffer); |
| 36 | |
| 37 | // Blocks until a buffer is available and returns it to the caller, |
| 38 | // the returned buffer will have a reference count of 1. |
| 39 | status_t acquire_buffer(MediaBuffer **buffer); |
| 40 | |
| 41 | protected: |
| 42 | virtual void signalBufferReturned(MediaBuffer *buffer); |
| 43 | |
| 44 | private: |
| 45 | friend class MediaBuffer; |
| 46 | |
| 47 | Mutex mLock; |
| 48 | Condition mCondition; |
| 49 | |
| 50 | MediaBuffer *mFirstBuffer, *mLastBuffer; |
| 51 | |
| 52 | MediaBufferGroup(const MediaBufferGroup &); |
| 53 | MediaBufferGroup &operator=(const MediaBufferGroup &); |
| 54 | }; |
| 55 | |
| 56 | } // namespace android |
| 57 | |
| 58 | #endif // MEDIA_BUFFER_GROUP_H_ |