NuPlayerSource.h revision cc227036b05f7c2f960a89c567a61f9decefe742
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 <utils/Vector.h> 26 27namespace android { 28 29struct ABuffer; 30struct MetaData; 31struct 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 }; 42 43 enum { 44 kWhatPrepared, 45 kWhatFlagsChanged, 46 kWhatVideoSizeChanged, 47 kWhatBufferingStart, 48 kWhatBufferingEnd, 49 kWhatSubtitleData, 50 kWhatQueueDecoderShutdown, 51 }; 52 53 // The provides message is used to notify the player about various 54 // events. 55 Source(const sp<AMessage> ¬ify) 56 : mNotify(notify) { 57 } 58 59 virtual void prepareAsync() = 0; 60 61 virtual void start() = 0; 62 virtual void stop() {} 63 virtual void pause() {} 64 virtual void resume() {} 65 66 // Returns OK iff more data was available, 67 // an error or ERROR_END_OF_STREAM if not. 68 virtual status_t feedMoreTSData() = 0; 69 70 virtual sp<AMessage> getFormat(bool audio); 71 virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; } 72 73 virtual status_t dequeueAccessUnit( 74 bool audio, sp<ABuffer> *accessUnit) = 0; 75 76 virtual status_t getDuration(int64_t * /* durationUs */) { 77 return INVALID_OPERATION; 78 } 79 80 virtual size_t getTrackCount() const { 81 return 0; 82 } 83 84 virtual sp<AMessage> getTrackInfo(size_t /* trackIndex */) const { 85 return NULL; 86 } 87 88 virtual status_t selectTrack(size_t /* trackIndex */, bool /* select */) { 89 return INVALID_OPERATION; 90 } 91 92 virtual status_t seekTo(int64_t /* seekTimeUs */) { 93 return INVALID_OPERATION; 94 } 95 96 virtual status_t setBuffers(bool /* audio */, Vector<MediaBuffer *> &/* buffers */) { 97 return INVALID_OPERATION; 98 } 99 100 virtual bool isRealTime() const { 101 return false; 102 } 103 104protected: 105 virtual ~Source() {} 106 107 virtual void onMessageReceived(const sp<AMessage> &msg); 108 109 sp<AMessage> dupNotify() const { return mNotify->dup(); } 110 111 void notifyFlagsChanged(uint32_t flags); 112 void notifyVideoSizeChanged(int32_t width, int32_t height); 113 void notifyPrepared(status_t err = OK); 114 115private: 116 sp<AMessage> mNotify; 117 118 DISALLOW_EVIL_CONSTRUCTORS(Source); 119}; 120 121} // namespace android 122 123#endif // NUPLAYER_SOURCE_H_ 124 125