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      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 struct IMediaHTTPService;
     29 class IMediaPlayerService;
     30 class IMediaMetadataRetriever;
     31 
     32 // Keep these in synch with the constants defined in MediaMetadataRetriever.java
     33 // class.
     34 enum {
     35     METADATA_KEY_CD_TRACK_NUMBER = 0,
     36     METADATA_KEY_ALBUM           = 1,
     37     METADATA_KEY_ARTIST          = 2,
     38     METADATA_KEY_AUTHOR          = 3,
     39     METADATA_KEY_COMPOSER        = 4,
     40     METADATA_KEY_DATE            = 5,
     41     METADATA_KEY_GENRE           = 6,
     42     METADATA_KEY_TITLE           = 7,
     43     METADATA_KEY_YEAR            = 8,
     44     METADATA_KEY_DURATION        = 9,
     45     METADATA_KEY_NUM_TRACKS      = 10,
     46     METADATA_KEY_WRITER          = 11,
     47     METADATA_KEY_MIMETYPE        = 12,
     48     METADATA_KEY_ALBUMARTIST     = 13,
     49     METADATA_KEY_DISC_NUMBER     = 14,
     50     METADATA_KEY_COMPILATION     = 15,
     51     METADATA_KEY_HAS_AUDIO       = 16,
     52     METADATA_KEY_HAS_VIDEO       = 17,
     53     METADATA_KEY_VIDEO_WIDTH     = 18,
     54     METADATA_KEY_VIDEO_HEIGHT    = 19,
     55     METADATA_KEY_BITRATE         = 20,
     56     METADATA_KEY_TIMED_TEXT_LANGUAGES      = 21,
     57     METADATA_KEY_IS_DRM          = 22,
     58     METADATA_KEY_LOCATION        = 23,
     59     METADATA_KEY_VIDEO_ROTATION  = 24,
     60 
     61     // Add more here...
     62 };
     63 
     64 class MediaMetadataRetriever: public RefBase
     65 {
     66 public:
     67     MediaMetadataRetriever();
     68     ~MediaMetadataRetriever();
     69     void disconnect();
     70 
     71     status_t setDataSource(
     72             const sp<IMediaHTTPService> &httpService,
     73             const char *dataSourceUrl,
     74             const KeyedVector<String8, String8> *headers = NULL);
     75 
     76     status_t setDataSource(int fd, int64_t offset, int64_t length);
     77     sp<IMemory> getFrameAtTime(int64_t timeUs, int option);
     78     sp<IMemory> extractAlbumArt();
     79     const char* extractMetadata(int keyCode);
     80 
     81 private:
     82     static const sp<IMediaPlayerService>& getService();
     83 
     84     class DeathNotifier: public IBinder::DeathRecipient
     85     {
     86     public:
     87         DeathNotifier() {}
     88         virtual ~DeathNotifier();
     89         virtual void binderDied(const wp<IBinder>& who);
     90     };
     91 
     92     static sp<DeathNotifier>                  sDeathNotifier;
     93     static Mutex                              sServiceLock;
     94     static sp<IMediaPlayerService>            sService;
     95 
     96     Mutex                                     mLock;
     97     sp<IMediaMetadataRetriever>               mRetriever;
     98 
     99 };
    100 
    101 }; // namespace android
    102 
    103 #endif // MEDIAMETADATARETRIEVER_H
    104