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 28 namespace android { 29 30 struct ABuffer; 31 struct MetaData; 32 struct MediaBuffer; 33 34 struct 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 kWhatInstantiateSecureDecoders, 60 }; 61 62 // The provides message is used to notify the player about various 63 // events. 64 Source(const sp<AMessage> ¬ify) 65 : mNotify(notify) { 66 } 67 68 virtual void prepareAsync() = 0; 69 70 virtual void start() = 0; 71 virtual void stop() {} 72 virtual void pause() {} 73 virtual void resume() {} 74 75 // Explicitly disconnect the underling data source 76 virtual void disconnect() {} 77 78 // Returns OK iff more data was available, 79 // an error or ERROR_END_OF_STREAM if not. 80 virtual status_t feedMoreTSData() = 0; 81 82 virtual sp<AMessage> getFormat(bool audio); 83 virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; } 84 virtual sp<MetaData> getFileFormatMeta() const { return NULL; } 85 86 virtual status_t dequeueAccessUnit( 87 bool audio, sp<ABuffer> *accessUnit) = 0; 88 89 virtual status_t getDuration(int64_t * /* durationUs */) { 90 return INVALID_OPERATION; 91 } 92 93 virtual size_t getTrackCount() const { 94 return 0; 95 } 96 97 virtual sp<AMessage> getTrackInfo(size_t /* trackIndex */) const { 98 return NULL; 99 } 100 101 virtual ssize_t getSelectedTrack(media_track_type /* type */) const { 102 return INVALID_OPERATION; 103 } 104 105 virtual status_t selectTrack(size_t /* trackIndex */, bool /* select */, int64_t /* timeUs*/) { 106 return INVALID_OPERATION; 107 } 108 109 virtual status_t seekTo(int64_t /* seekTimeUs */) { 110 return INVALID_OPERATION; 111 } 112 113 virtual status_t setBuffers(bool /* audio */, Vector<MediaBuffer *> &/* buffers */) { 114 return INVALID_OPERATION; 115 } 116 117 virtual bool isRealTime() const { 118 return false; 119 } 120 121 protected: 122 virtual ~Source() {} 123 124 virtual void onMessageReceived(const sp<AMessage> &msg); 125 126 sp<AMessage> dupNotify() const { return mNotify->dup(); } 127 128 void notifyFlagsChanged(uint32_t flags); 129 void notifyVideoSizeChanged(const sp<AMessage> &format = NULL); 130 void notifyInstantiateSecureDecoders(const sp<AMessage> &reply); 131 void notifyPrepared(status_t err = OK); 132 133 private: 134 sp<AMessage> mNotify; 135 136 DISALLOW_EVIL_CONSTRUCTORS(Source); 137 }; 138 139 } // namespace android 140 141 #endif // NUPLAYER_SOURCE_H_ 142 143