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      1 /*
      2  * Copyright (C) 2009 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 OMX_MASTER_H_
     18 
     19 #define OMX_MASTER_H_
     20 
     21 #include <media/hardware/OMXPluginBase.h>
     22 
     23 #include <utils/threads.h>
     24 #include <utils/KeyedVector.h>
     25 #include <utils/List.h>
     26 #include <utils/String8.h>
     27 
     28 namespace android {
     29 
     30 struct OMXMaster : public OMXPluginBase {
     31     OMXMaster();
     32     virtual ~OMXMaster();
     33 
     34     virtual OMX_ERRORTYPE makeComponentInstance(
     35             const char *name,
     36             const OMX_CALLBACKTYPE *callbacks,
     37             OMX_PTR appData,
     38             OMX_COMPONENTTYPE **component);
     39 
     40     virtual OMX_ERRORTYPE destroyComponentInstance(
     41             OMX_COMPONENTTYPE *component);
     42 
     43     virtual OMX_ERRORTYPE enumerateComponents(
     44             OMX_STRING name,
     45             size_t size,
     46             OMX_U32 index);
     47 
     48     virtual OMX_ERRORTYPE getRolesOfComponent(
     49             const char *name,
     50             Vector<String8> *roles);
     51 
     52 private:
     53     char mProcessName[16];
     54     Mutex mLock;
     55     struct Plugin {
     56         OMXPluginBase *mOmx;
     57         void *mLibHandle;
     58     };
     59     List<Plugin> mPlugins;
     60     KeyedVector<String8, OMXPluginBase *> mPluginByComponentName;
     61     KeyedVector<OMX_COMPONENTTYPE *, OMXPluginBase *> mPluginByInstance;
     62 
     63     void addVendorPlugin();
     64     void addPlatformPlugin();
     65     void addPlugin(const char *libname);
     66     void addPlugin(OMXPluginBase *plugin);
     67     void clearPlugins();
     68 
     69     OMXMaster(const OMXMaster &);
     70     OMXMaster &operator=(const OMXMaster &);
     71 };
     72 
     73 }  // namespace android
     74 
     75 #endif  // OMX_MASTER_H_
     76