NuPlayerSource.h revision 7c4f0d757bfeedaab4b7ef4ccf5b0a72ec8f4306
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 kWhatBufferingStart, 49 kWhatBufferingEnd, 50 kWhatSubtitleData, 51 kWhatTimedTextData, 52 kWhatQueueDecoderShutdown, 53 }; 54 55 // The provides message is used to notify the player about various 56 // events. 57 Source(const sp<AMessage> ¬ify) 58 : mNotify(notify) { 59 } 60 61 virtual void prepareAsync() = 0; 62 63 virtual void start() = 0; 64 virtual void stop() {} 65 virtual void pause() {} 66 virtual void resume() {} 67 68 // Returns OK iff more data was available, 69 // an error or ERROR_END_OF_STREAM if not. 70 virtual status_t feedMoreTSData() = 0; 71 72 virtual sp<AMessage> getFormat(bool audio); 73 virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; } 74 75 virtual status_t dequeueAccessUnit( 76 bool audio, sp<ABuffer> *accessUnit) = 0; 77 78 virtual status_t getDuration(int64_t * /* durationUs */) { 79 return INVALID_OPERATION; 80 } 81 82 virtual size_t getTrackCount() const { 83 return 0; 84 } 85 86 virtual sp<AMessage> getTrackInfo(size_t /* trackIndex */) const { 87 return NULL; 88 } 89 90 virtual ssize_t getSelectedTrack(media_track_type /* type */) const { 91 return INVALID_OPERATION; 92 } 93 94 virtual status_t selectTrack(size_t /* trackIndex */, bool /* select */) { 95 return INVALID_OPERATION; 96 } 97 98 virtual status_t seekTo(int64_t /* seekTimeUs */) { 99 return INVALID_OPERATION; 100 } 101 102 virtual status_t setBuffers(bool /* audio */, Vector<MediaBuffer *> &/* buffers */) { 103 return INVALID_OPERATION; 104 } 105 106 virtual bool isRealTime() const { 107 return false; 108 } 109 110protected: 111 virtual ~Source() {} 112 113 virtual void onMessageReceived(const sp<AMessage> &msg); 114 115 sp<AMessage> dupNotify() const { return mNotify->dup(); } 116 117 void notifyFlagsChanged(uint32_t flags); 118 void notifyVideoSizeChanged(const sp<AMessage> &format = NULL); 119 void notifyPrepared(status_t err = OK); 120 121private: 122 sp<AMessage> mNotify; 123 124 DISALLOW_EVIL_CONSTRUCTORS(Source); 125}; 126 127} // namespace android 128 129#endif // NUPLAYER_SOURCE_H_ 130 131