NuPlayerSource.h revision 48296b792a8d68358de74141fa80bd5bd84d0307
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 }; 43 44 enum { 45 kWhatPrepared, 46 kWhatFlagsChanged, 47 kWhatVideoSizeChanged, 48 kWhatBufferingUpdate, 49 kWhatBufferingStart, 50 kWhatBufferingEnd, 51 kWhatSubtitleData, 52 kWhatTimedTextData, 53 kWhatQueueDecoderShutdown, 54 kWhatDrmNoLicense, 55 }; 56 57 // The provides message is used to notify the player about various 58 // events. 59 Source(const sp<AMessage> ¬ify) 60 : mNotify(notify) { 61 } 62 63 virtual void prepareAsync() = 0; 64 65 virtual void start() = 0; 66 virtual void stop() {} 67 virtual void pause() {} 68 virtual void resume() {} 69 70 // Explicitly disconnect the underling data source 71 virtual void disconnect() {} 72 73 // Returns OK iff more data was available, 74 // an error or ERROR_END_OF_STREAM if not. 75 virtual status_t feedMoreTSData() = 0; 76 77 virtual sp<AMessage> getFormat(bool audio); 78 virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; } 79 80 virtual status_t dequeueAccessUnit( 81 bool audio, sp<ABuffer> *accessUnit) = 0; 82 83 virtual status_t getDuration(int64_t * /* durationUs */) { 84 return INVALID_OPERATION; 85 } 86 87 virtual size_t getTrackCount() const { 88 return 0; 89 } 90 91 virtual sp<AMessage> getTrackInfo(size_t /* trackIndex */) const { 92 return NULL; 93 } 94 95 virtual ssize_t getSelectedTrack(media_track_type /* type */) const { 96 return INVALID_OPERATION; 97 } 98 99 virtual status_t selectTrack(size_t /* trackIndex */, bool /* select */) { 100 return INVALID_OPERATION; 101 } 102 103 virtual status_t seekTo(int64_t /* seekTimeUs */) { 104 return INVALID_OPERATION; 105 } 106 107 virtual status_t setBuffers(bool /* audio */, Vector<MediaBuffer *> &/* buffers */) { 108 return INVALID_OPERATION; 109 } 110 111 virtual bool isRealTime() const { 112 return false; 113 } 114 115protected: 116 virtual ~Source() {} 117 118 virtual void onMessageReceived(const sp<AMessage> &msg); 119 120 sp<AMessage> dupNotify() const { return mNotify->dup(); } 121 122 void notifyFlagsChanged(uint32_t flags); 123 void notifyVideoSizeChanged(const sp<AMessage> &format = NULL); 124 void notifyPrepared(status_t err = OK); 125 126private: 127 sp<AMessage> mNotify; 128 129 DISALLOW_EVIL_CONSTRUCTORS(Source); 130}; 131 132} // namespace android 133 134#endif // NUPLAYER_SOURCE_H_ 135 136