NuPlayerSource.h revision efbb61950db36a5eb789be83f077246172507c67
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; 31struct MetaData; 32struct MediaBuffer; 33 34struct NuPlayer::Source : public AHandler { 35 enum Flags { 36 FLAG_CAN_PAUSE = 1, 37 FLAG_CAN_SEEK_BACKWARD = 2, // the "10 sec back button" 38 FLAG_CAN_SEEK_FORWARD = 4, // the "10 sec forward button" 39 FLAG_CAN_SEEK = 8, // the "seek bar" 40 FLAG_DYNAMIC_DURATION = 16, 41 FLAG_SECURE = 32, 42 FLAG_PROTECTED = 64, 43 }; 44 45 enum { 46 kWhatPrepared, 47 kWhatFlagsChanged, 48 kWhatVideoSizeChanged, 49 kWhatBufferingUpdate, 50 kWhatBufferingStart, 51 kWhatBufferingEnd, 52 kWhatPauseOnBufferingStart, 53 kWhatResumeOnBufferingEnd, 54 kWhatCacheStats, 55 kWhatSubtitleData, 56 kWhatTimedTextData, 57 kWhatQueueDecoderShutdown, 58 kWhatDrmNoLicense, 59 }; 60 61 // The provides message is used to notify the player about various 62 // events. 63 Source(const sp<AMessage> ¬ify) 64 : mNotify(notify) { 65 } 66 67 virtual void prepareAsync() = 0; 68 69 virtual void start() = 0; 70 virtual void stop() {} 71 virtual void pause() {} 72 virtual void resume() {} 73 74 // Explicitly disconnect the underling data source 75 virtual void disconnect() {} 76 77 // Returns OK iff more data was available, 78 // an error or ERROR_END_OF_STREAM if not. 79 virtual status_t feedMoreTSData() = 0; 80 81 virtual sp<AMessage> getFormat(bool audio); 82 virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; } 83 virtual sp<MetaData> getFileFormatMeta() const { return NULL; } 84 85 virtual status_t dequeueAccessUnit( 86 bool audio, sp<ABuffer> *accessUnit) = 0; 87 88 virtual status_t getDuration(int64_t * /* durationUs */) { 89 return INVALID_OPERATION; 90 } 91 92 virtual size_t getTrackCount() const { 93 return 0; 94 } 95 96 virtual sp<AMessage> getTrackInfo(size_t /* trackIndex */) const { 97 return NULL; 98 } 99 100 virtual ssize_t getSelectedTrack(media_track_type /* type */) const { 101 return INVALID_OPERATION; 102 } 103 104 virtual status_t selectTrack(size_t /* trackIndex */, bool /* select */, int64_t /* timeUs*/) { 105 return INVALID_OPERATION; 106 } 107 108 virtual status_t seekTo(int64_t /* seekTimeUs */) { 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 120protected: 121 virtual ~Source() {} 122 123 virtual void onMessageReceived(const sp<AMessage> &msg); 124 125 sp<AMessage> dupNotify() const { return mNotify->dup(); } 126 127 void notifyFlagsChanged(uint32_t flags); 128 void notifyVideoSizeChanged(const sp<AMessage> &format = NULL); 129 void notifyPrepared(status_t err = OK); 130 131private: 132 sp<AMessage> mNotify; 133 134 DISALLOW_EVIL_CONSTRUCTORS(Source); 135}; 136 137} // namespace android 138 139#endif // NUPLAYER_SOURCE_H_ 140 141