MediaPuller.h revision 96fc6cc65ca93009a759a3a874b82a35771b9714
1/* 2 * Copyright 2012, 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_PULLER_H_ 18 19#define MEDIA_PULLER_H_ 20 21#include <media/stagefright/foundation/AHandler.h> 22 23namespace android { 24 25struct MediaSource; 26 27struct MediaPuller : public AHandler { 28 enum { 29 kWhatEOS, 30 kWhatAccessUnit 31 }; 32 33 MediaPuller(const sp<MediaSource> &source, const sp<AMessage> ¬ify); 34 35 status_t start(); 36 void stopAsync(const sp<AMessage> ¬ify); 37 38protected: 39 virtual void onMessageReceived(const sp<AMessage> &msg); 40 virtual ~MediaPuller(); 41 42private: 43 enum { 44 kWhatStart, 45 kWhatStop, 46 kWhatPull, 47 }; 48 49 sp<MediaSource> mSource; 50 sp<AMessage> mNotify; 51 int32_t mPullGeneration; 52 bool mIsAudio; 53 54 status_t postSynchronouslyAndReturnError(const sp<AMessage> &msg); 55 void schedulePull(); 56 57 DISALLOW_EVIL_CONSTRUCTORS(MediaPuller); 58}; 59 60} // namespace android 61 62#endif // MEDIA_PULLER_H_ 63