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 26 namespace android { 27 28 class IMediaPlayerService; 29 class IMediaMetadataRetriever; 30 31 // Keep these in synch with the constants defined in MediaMetadataRetriever.java 32 // class. 33 enum { 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_IS_DRM_CRIPPLED = 11, 46 METADATA_KEY_CODEC = 12, 47 METADATA_KEY_RATING = 13, 48 METADATA_KEY_COMMENT = 14, 49 METADATA_KEY_COPYRIGHT = 15, 50 METADATA_KEY_BIT_RATE = 16, 51 METADATA_KEY_FRAME_RATE = 17, 52 METADATA_KEY_VIDEO_FORMAT = 18, 53 METADATA_KEY_VIDEO_HEIGHT = 19, 54 METADATA_KEY_VIDEO_WIDTH = 20, 55 METADATA_KEY_WRITER = 21, 56 // Add more here... 57 }; 58 59 // The intended mode of operations:$ 60 // METADATA_MODE_NOOP: Experimental - just add and remove data source.$ 61 // METADATA_MODE_FRAME_CAPTURE_ONLY: For capture frame/thumbnail only.$ 62 // METADATA_MODE_METADATA_RETRIEVAL_ONLY: For meta data retrieval only.$ 63 // METADATA_MODE_FRAME_CAPTURE_AND_METADATA_RETRIEVAL: For both frame capture 64 // and meta data retrieval.$ 65 enum { 66 METADATA_MODE_NOOP = 0x00, 67 METADATA_MODE_FRAME_CAPTURE_ONLY = 0x01, 68 METADATA_MODE_METADATA_RETRIEVAL_ONLY = 0x02, 69 METADATA_MODE_FRAME_CAPTURE_AND_METADATA_RETRIEVAL = 0x03 70 }; 71 72 class MediaMetadataRetriever: public RefBase 73 { 74 public: 75 MediaMetadataRetriever(); 76 ~MediaMetadataRetriever(); 77 void disconnect(); 78 status_t setDataSource(const char* dataSourceUrl); 79 status_t setDataSource(int fd, int64_t offset, int64_t length); 80 status_t setMode(int mode); 81 status_t getMode(int* mode); 82 sp<IMemory> captureFrame(); 83 sp<IMemory> extractAlbumArt(); 84 const char* extractMetadata(int keyCode); 85 86 private: 87 static const sp<IMediaPlayerService>& getService(); 88 89 class DeathNotifier: public IBinder::DeathRecipient 90 { 91 public: DeathNotifier()92 DeathNotifier() {} 93 virtual ~DeathNotifier(); 94 virtual void binderDied(const wp<IBinder>& who); 95 }; 96 97 static sp<DeathNotifier> sDeathNotifier; 98 static Mutex sServiceLock; 99 static sp<IMediaPlayerService> sService; 100 101 Mutex mLock; 102 sp<IMediaMetadataRetriever> mRetriever; 103 104 }; 105 106 }; // namespace android 107 108 #endif // MEDIAMETADATARETRIEVER_H 109