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 }; 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. SourceSource59 Source(const sp<AMessage> ¬ify) 60 : mNotify(notify) { 61 } 62 63 virtual void prepareAsync() = 0; 64 65 virtual void start() = 0; stopSource66 virtual void stop() {} pauseSource67 virtual void pause() {} resumeSource68 virtual void resume() {} 69 70 // Explicitly disconnect the underling data source disconnectSource71 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); getFormatMetaSource78 virtual sp<MetaData> getFormatMeta(bool /* audio */) { return NULL; } getFileFormatMetaSource79 virtual sp<MetaData> getFileFormatMeta() const { return NULL; } 80 81 virtual status_t dequeueAccessUnit( 82 bool audio, sp<ABuffer> *accessUnit) = 0; 83 getDurationSource84 virtual status_t getDuration(int64_t * /* durationUs */) { 85 return INVALID_OPERATION; 86 } 87 getTrackCountSource88 virtual size_t getTrackCount() const { 89 return 0; 90 } 91 getTrackInfoSource92 virtual sp<AMessage> getTrackInfo(size_t /* trackIndex */) const { 93 return NULL; 94 } 95 getSelectedTrackSource96 virtual ssize_t getSelectedTrack(media_track_type /* type */) const { 97 return INVALID_OPERATION; 98 } 99 selectTrackSource100 virtual status_t selectTrack(size_t /* trackIndex */, bool /* select */) { 101 return INVALID_OPERATION; 102 } 103 seekToSource104 virtual status_t seekTo(int64_t /* seekTimeUs */) { 105 return INVALID_OPERATION; 106 } 107 setBuffersSource108 virtual status_t setBuffers(bool /* audio */, Vector<MediaBuffer *> &/* buffers */) { 109 return INVALID_OPERATION; 110 } 111 isRealTimeSource112 virtual bool isRealTime() const { 113 return false; 114 } 115 116 protected: ~SourceSource117 virtual ~Source() {} 118 119 virtual void onMessageReceived(const sp<AMessage> &msg); 120 dupNotifySource121 sp<AMessage> dupNotify() const { return mNotify->dup(); } 122 123 void notifyFlagsChanged(uint32_t flags); 124 void notifyVideoSizeChanged(const sp<AMessage> &format = NULL); 125 void notifyPrepared(status_t err = OK); 126 127 private: 128 sp<AMessage> mNotify; 129 130 DISALLOW_EVIL_CONSTRUCTORS(Source); 131 }; 132 133 } // namespace android 134 135 #endif // NUPLAYER_SOURCE_H_ 136 137