mediametadataretriever.h revision af8791e112c8072452bd14ef3c43a47511d19542
1/* 2 * Copyright (C) 2008 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 18#ifndef MEDIAMETADATARETRIEVER_H 19#define MEDIAMETADATARETRIEVER_H 20 21#include <utils/Errors.h> // for status_t 22#include <utils/threads.h> 23#include <binder/IMemory.h> 24#include <media/IMediaMetadataRetriever.h> 25 26namespace android { 27 28class IMediaPlayerService; 29class IMediaMetadataRetriever; 30 31// Keep these in synch with the constants defined in MediaMetadataRetriever.java 32// class. 33enum { 34 METADATA_KEY_CD_TRACK_NUMBER = 0, 35 METADATA_KEY_ALBUM = 1, 36 METADATA_KEY_ARTIST = 2, 37 METADATA_KEY_AUTHOR = 3, 38 METADATA_KEY_COMPOSER = 4, 39 METADATA_KEY_DATE = 5, 40 METADATA_KEY_GENRE = 6, 41 METADATA_KEY_TITLE = 7, 42 METADATA_KEY_YEAR = 8, 43 METADATA_KEY_DURATION = 9, 44 METADATA_KEY_NUM_TRACKS = 10, 45 METADATA_KEY_WRITER = 11, 46 METADATA_KEY_MIMETYPE = 12, 47 METADATA_KEY_ALBUMARTIST = 13, 48 METADATA_KEY_DISC_NUMBER = 14, 49 METADATA_KEY_COMPILATION = 15, 50 METADATA_KEY_HAS_AUDIO = 16, 51 METADATA_KEY_HAS_VIDEO = 17, 52 METADATA_KEY_VIDEO_WIDTH = 18, 53 METADATA_KEY_VIDEO_HEIGHT = 19, 54 METADATA_KEY_BITRATE = 20, 55 56 // Add more here... 57}; 58 59class MediaMetadataRetriever: public RefBase 60{ 61public: 62 MediaMetadataRetriever(); 63 ~MediaMetadataRetriever(); 64 void disconnect(); 65 66 status_t setDataSource( 67 const char *dataSourceUrl, 68 const KeyedVector<String8, String8> *headers = NULL); 69 70 status_t setDataSource(int fd, int64_t offset, int64_t length); 71 sp<IMemory> getFrameAtTime(int64_t timeUs, int option); 72 sp<IMemory> extractAlbumArt(); 73 const char* extractMetadata(int keyCode); 74 75private: 76 static const sp<IMediaPlayerService>& getService(); 77 78 class DeathNotifier: public IBinder::DeathRecipient 79 { 80 public: 81 DeathNotifier() {} 82 virtual ~DeathNotifier(); 83 virtual void binderDied(const wp<IBinder>& who); 84 }; 85 86 static sp<DeathNotifier> sDeathNotifier; 87 static Mutex sServiceLock; 88 static sp<IMediaPlayerService> sService; 89 90 Mutex mLock; 91 sp<IMediaMetadataRetriever> mRetriever; 92 93}; 94 95}; // namespace android 96 97#endif // MEDIAMETADATARETRIEVER_H 98