1 /* 2 * Copyright (C) 2010 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 LIVE_DATA_SOURCE_H_ 18 19 #define LIVE_DATA_SOURCE_H_ 20 21 #include <media/DataSource.h> 22 #include <media/stagefright/foundation/ABase.h> 23 #include <utils/threads.h> 24 #include <utils/List.h> 25 26 namespace android { 27 28 struct ABuffer; 29 30 struct LiveDataSource : public DataSource { 31 LiveDataSource(); 32 33 virtual status_t initCheck() const; 34 35 virtual ssize_t readAt(off64_t offset, void *data, size_t size); 36 ssize_t readAtNonBlocking(off64_t offset, void *data, size_t size); 37 38 void queueBuffer(const sp<ABuffer> &buffer); 39 void queueEOS(status_t finalResult); 40 void reset(); 41 42 size_t countQueuedBuffers(); 43 44 protected: 45 virtual ~LiveDataSource(); 46 47 private: 48 Mutex mLock; 49 Condition mCondition; 50 51 off64_t mOffset; 52 List<sp<ABuffer> > mBufferQueue; 53 status_t mFinalResult; 54 55 FILE *mBackupFile; 56 57 ssize_t readAt_l(off64_t offset, void *data, size_t size); 58 59 DISALLOW_EVIL_CONSTRUCTORS(LiveDataSource); 60 }; 61 62 } // namespace android 63 64 #endif // LIVE_DATA_SOURCE_H_ 65
