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 kWhatSubtitleData, 46 kWhatQueueDecoderShutdown, 47 }; 48 49 // The provides message is used to notify the player about various 50 // events. SourceSource51 Source(const sp<AMessage> ¬ify) 52 : mNotify(notify) { 53 } 54 55 virtual void prepareAsync() = 0; 56 57 virtual void start() = 0; stopSource58 virtual void stop() {} pauseSource59 virtual void pause() {} resumeSource60 virtual void resume() {} 61 62 // Returns OK iff more data was available, 63 // an error or ERROR_END_OF_STREAM if not. 64 virtual status_t feedMoreTSData() = 0; 65 66 virtual sp<AMessage> getFormat(bool audio); 67 68 virtual status_t dequeueAccessUnit( 69 bool audio, sp<ABuffer> *accessUnit) = 0; 70 getDurationSource71 virtual status_t getDuration(int64_t *durationUs) { 72 return INVALID_OPERATION; 73 } 74 getTrackInfoSource75 virtual status_t getTrackInfo(Parcel* reply) const { 76 return INVALID_OPERATION; 77 } 78 selectTrackSource79 virtual status_t selectTrack(size_t trackIndex, bool select) { 80 return INVALID_OPERATION; 81 } 82 seekToSource83 virtual status_t seekTo(int64_t seekTimeUs) { 84 return INVALID_OPERATION; 85 } 86 isRealTimeSource87 virtual bool isRealTime() const { 88 return false; 89 } 90 91 protected: ~SourceSource92 virtual ~Source() {} 93 94 virtual void onMessageReceived(const sp<AMessage> &msg); 95 getFormatMetaSource96 virtual sp<MetaData> getFormatMeta(bool audio) { return NULL; } 97 dupNotifySource98 sp<AMessage> dupNotify() const { return mNotify->dup(); } 99 100 void notifyFlagsChanged(uint32_t flags); 101 void notifyVideoSizeChanged(int32_t width, int32_t height); 102 void notifyPrepared(status_t err = OK); 103 104 private: 105 sp<AMessage> mNotify; 106 107 DISALLOW_EVIL_CONSTRUCTORS(Source); 108 }; 109 110 } // namespace android 111 112 #endif // NUPLAYER_SOURCE_H_ 113 114