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 25 namespace android { 26 27 struct ABuffer; 28 struct MetaData; 29 30 struct 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. SourceSource49 Source(const sp<AMessage> ¬ify) 50 : mNotify(notify) { 51 } 52 53 virtual void prepareAsync() = 0; 54 55 virtual void start() = 0; stopSource56 virtual void stop() {} pauseSource57 virtual void pause() {} resumeSource58 virtual void resume() {} 59 60 // Returns OK iff more data was available, 61 // an error or ERROR_END_OF_STREAM if not. 62 virtual status_t feedMoreTSData() = 0; 63 64 virtual sp<AMessage> getFormat(bool audio); 65 66 virtual status_t dequeueAccessUnit( 67 bool audio, sp<ABuffer> *accessUnit) = 0; 68 getDurationSource69 virtual status_t getDuration(int64_t *durationUs) { 70 return INVALID_OPERATION; 71 } 72 seekToSource73 virtual status_t seekTo(int64_t seekTimeUs) { 74 return INVALID_OPERATION; 75 } 76 isRealTimeSource77 virtual bool isRealTime() const { 78 return false; 79 } 80 81 protected: ~SourceSource82 virtual ~Source() {} 83 84 virtual void onMessageReceived(const sp<AMessage> &msg); 85 getFormatMetaSource86 virtual sp<MetaData> getFormatMeta(bool audio) { return NULL; } 87 dupNotifySource88 sp<AMessage> dupNotify() const { return mNotify->dup(); } 89 90 void notifyFlagsChanged(uint32_t flags); 91 void notifyVideoSizeChanged(int32_t width, int32_t height); 92 void notifyPrepared(status_t err = OK); 93 94 private: 95 sp<AMessage> mNotify; 96 97 DISALLOW_EVIL_CONSTRUCTORS(Source); 98 }; 99 100 } // namespace android 101 102 #endif // NUPLAYER_SOURCE_H_ 103 104