NuPlayerSource.h revision cfc3083927df14bf82403b20a45ae303a01c39f5
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 NUPLAYER_SOURCE_H_ 18 19#define NUPLAYER_SOURCE_H_ 20 21#include "NuPlayer.h" 22 23#include <media/stagefright/foundation/AMessage.h> 24 25namespace android { 26 27struct ABuffer; 28struct MetaData; 29 30struct NuPlayer::Source : public AHandler { 31 enum Flags { 32 FLAG_CAN_PAUSE = 1, 33 FLAG_CAN_SEEK_BACKWARD = 2, // the "10 sec back button" 34 FLAG_CAN_SEEK_FORWARD = 4, // the "10 sec forward button" 35 FLAG_CAN_SEEK = 8, // the "seek bar" 36 FLAG_DYNAMIC_DURATION = 16, 37 }; 38 39 enum { 40 kWhatPrepared, 41 kWhatFlagsChanged, 42 kWhatVideoSizeChanged, 43 kWhatBufferingStart, 44 kWhatBufferingEnd, 45 }; 46 47 // The provides message is used to notify the player about various 48 // events. 49 Source(const sp<AMessage> ¬ify) 50 : mNotify(notify) { 51 } 52 53 virtual void prepareAsync() = 0; 54 55 virtual void start() = 0; 56 virtual void stop() {} 57 58 // Returns OK iff more data was available, 59 // an error or ERROR_END_OF_STREAM if not. 60 virtual status_t feedMoreTSData() = 0; 61 62 virtual sp<AMessage> getFormat(bool audio); 63 64 virtual status_t dequeueAccessUnit( 65 bool audio, sp<ABuffer> *accessUnit) = 0; 66 67 virtual status_t getDuration(int64_t *durationUs) { 68 return INVALID_OPERATION; 69 } 70 71 virtual status_t seekTo(int64_t seekTimeUs) { 72 return INVALID_OPERATION; 73 } 74 75protected: 76 virtual ~Source() {} 77 78 virtual void onMessageReceived(const sp<AMessage> &msg); 79 80 virtual sp<MetaData> getFormatMeta(bool audio) { return NULL; } 81 82 sp<AMessage> dupNotify() const { return mNotify->dup(); } 83 84 void notifyFlagsChanged(uint32_t flags); 85 void notifyVideoSizeChanged(int32_t width, int32_t height); 86 void notifyPrepared(status_t err = OK); 87 88private: 89 sp<AMessage> mNotify; 90 91 DISALLOW_EVIL_CONSTRUCTORS(Source); 92}; 93 94} // namespace android 95 96#endif // NUPLAYER_SOURCE_H_ 97 98