NuPlayerSource.h revision 144868295f75a650a0b487c60f6983a0790fe39a
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#include <media/stagefright/MetaData.h> 25#include <media/mediaplayer.h> 26#include <utils/Vector.h> 27 28namespace android { 29 30struct ABuffer; 31class MediaBuffer; 32 33struct NuPlayer::Source : public AHandler { 34 enum Flags { 35 FLAG_CAN_PAUSE = 1, 36 FLAG_CAN_SEEK_BACKWARD = 2, // the "10 sec back button" 37 FLAG_CAN_SEEK_FORWARD = 4, // the "10 sec forward button" 38 FLAG_CAN_SEEK = 8, // the "seek bar" 39 FLAG_DYNAMIC_DURATION = 16, 40 FLAG_SECURE = 32, 41 FLAG_PROTECTED = 64, 42 }; 43 44 enum { 45 kWhatPrepared, 46 kWhatFlagsChanged, 47 kWhatVideoSizeChanged, 48 kWhatBufferingUpdate, 49 kWhatPauseOnBufferingStart, 50 kWhatResumeOnBufferingEnd, 51 kWhatCacheStats, 52 kWhatSubtitleData, 53 kWhatTimedTextData, 54 kWhatTimedMetaData, 55 kWhatQueueDecoderShutdown, 56 kWhatDrmNoLicense, 57 kWhatInstantiateSecureDecoders, 58 }; 59 60 // The provides message is used to notify the player about various 61 // events. 62 explicit Source(const sp<AMessage> ¬ify) 63 : mNotify(notify) { 64 } 65 66 virtual void prepareAsync() = 0; 67 68 virtual void start() = 0; 69 virtual void stop() {} 70 virtual void pause() {} 71 virtual void resume() {} 72 73 // Explicitly disconnect the underling data source 74 virtual void disconnect() {} 75 76 // Returns OK iff more data was available, 77 // an error or ERROR_END_OF_STREAM if not. 78 virtual status_t feedMoreTSData() = 0; 79 80 virtual sp<AMessage> getFormat(bool audio); 81 virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; } 82 virtual sp<MetaData> getFileFormatMeta() const { return NULL; } 83 84 virtual status_t dequeueAccessUnit( 85 bool audio, sp<ABuffer> *accessUnit) = 0; 86 87 virtual status_t getDuration(int64_t * /* durationUs */) { 88 return INVALID_OPERATION; 89 } 90 91 virtual size_t getTrackCount() const { 92 return 0; 93 } 94 95 virtual sp<AMessage> getTrackInfo(size_t /* trackIndex */) const { 96 return NULL; 97 } 98 99 virtual ssize_t getSelectedTrack(media_track_type /* type */) const { 100 return INVALID_OPERATION; 101 } 102 103 virtual status_t selectTrack(size_t /* trackIndex */, bool /* select */, int64_t /* timeUs*/) { 104 return INVALID_OPERATION; 105 } 106 107 // Refer to comment of seekTo in IMediaPlayer.h for meaning of |precise|. 108 virtual status_t seekTo(int64_t /* seekTimeUs */, bool /* precise */ = false) { 109 return INVALID_OPERATION; 110 } 111 112 virtual status_t setBuffers(bool /* audio */, Vector<MediaBuffer *> &/* buffers */) { 113 return INVALID_OPERATION; 114 } 115 116 virtual bool isRealTime() const { 117 return false; 118 } 119 120 virtual bool isStreaming() const { 121 return true; 122 } 123 124 virtual void setOffloadAudio(bool /* offload */) {} 125 126protected: 127 virtual ~Source() {} 128 129 virtual void onMessageReceived(const sp<AMessage> &msg); 130 131 sp<AMessage> dupNotify() const { return mNotify->dup(); } 132 133 void notifyFlagsChanged(uint32_t flags); 134 void notifyVideoSizeChanged(const sp<AMessage> &format = NULL); 135 void notifyInstantiateSecureDecoders(const sp<AMessage> &reply); 136 void notifyPrepared(status_t err = OK); 137 138private: 139 sp<AMessage> mNotify; 140 141 DISALLOW_EVIL_CONSTRUCTORS(Source); 142}; 143 144} // namespace android 145 146#endif // NUPLAYER_SOURCE_H_ 147 148