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      1 /*
      2 **
      3 ** Copyright 2012, The Android Open Source Project
      4 **
      5 ** Licensed under the Apache License, Version 2.0 (the "License");
      6 ** you may not use this file except in compliance with the License.
      7 ** You may obtain a copy of the License at
      8 **
      9 **     http://www.apache.org/licenses/LICENSE-2.0
     10 **
     11 ** Unless required by applicable law or agreed to in writing, software
     12 ** distributed under the License is distributed on an "AS IS" BASIS,
     13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 ** See the License for the specific language governing permissions and
     15 ** limitations under the License.
     16 */
     17 
     18 #ifndef ANDROID_MEDIAPLAYERFACTORY_H
     19 #define ANDROID_MEDIAPLAYERFACTORY_H
     20 
     21 #include <media/MediaPlayerInterface.h>
     22 #include <media/stagefright/foundation/ABase.h>
     23 
     24 namespace android {
     25 
     26 class MediaPlayerFactory {
     27   public:
     28     class IFactory {
     29       public:
     30         virtual ~IFactory() { }
     31 
     32         virtual float scoreFactory(const sp<IMediaPlayer>& /*client*/,
     33                                    const char* /*url*/,
     34                                    float /*curScore*/) { return 0.0; }
     35 
     36         virtual float scoreFactory(const sp<IMediaPlayer>& /*client*/,
     37                                    int /*fd*/,
     38                                    int64_t /*offset*/,
     39                                    int64_t /*length*/,
     40                                    float /*curScore*/) { return 0.0; }
     41 
     42         virtual float scoreFactory(const sp<IMediaPlayer>& /*client*/,
     43                                    const sp<IStreamSource> &/*source*/,
     44                                    float /*curScore*/) { return 0.0; }
     45 
     46         virtual float scoreFactory(const sp<IMediaPlayer>& /*client*/,
     47                                    const sp<DataSource> &/*source*/,
     48                                    float /*curScore*/) { return 0.0; }
     49 
     50         virtual sp<MediaPlayerBase> createPlayer(pid_t pid) = 0;
     51     };
     52 
     53     static status_t registerFactory(IFactory* factory,
     54                                     player_type type);
     55     static void unregisterFactory(player_type type);
     56     static player_type getPlayerType(const sp<IMediaPlayer>& client,
     57                                      const char* url);
     58     static player_type getPlayerType(const sp<IMediaPlayer>& client,
     59                                      int fd,
     60                                      int64_t offset,
     61                                      int64_t length);
     62     static player_type getPlayerType(const sp<IMediaPlayer>& client,
     63                                      const sp<IStreamSource> &source);
     64     static player_type getPlayerType(const sp<IMediaPlayer>& client,
     65                                      const sp<DataSource> &source);
     66 
     67     static sp<MediaPlayerBase> createPlayer(player_type playerType,
     68                                             void* cookie,
     69                                             notify_callback_f notifyFunc,
     70                                             pid_t pid);
     71 
     72     static void registerBuiltinFactories();
     73 
     74   private:
     75     typedef KeyedVector<player_type, IFactory*> tFactoryMap;
     76 
     77     MediaPlayerFactory() { }
     78 
     79     static status_t registerFactory_l(IFactory* factory,
     80                                       player_type type);
     81 
     82     static Mutex       sLock;
     83     static tFactoryMap sFactoryMap;
     84     static bool        sInitComplete;
     85 
     86     DISALLOW_EVIL_CONSTRUCTORS(MediaPlayerFactory);
     87 };
     88 
     89 }  // namespace android
     90 #endif  // ANDROID_MEDIAPLAYERFACTORY_H
     91