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path: root/libstagefrighthw/TIOMXPlugin.cpp
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/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "TIOMXPlugin.h"

#include <dlfcn.h>

#include <media/stagefright/HardwareAPI.h>

namespace android {

OMXPluginBase *createOMXPlugin() {
    return new TIOMXPlugin;
}

TIOMXPlugin::TIOMXPlugin()
    : mLibHandle(dlopen("libOMX_Core.so", RTLD_NOW)),
      mInit(NULL),
      mDeinit(NULL),
      mComponentNameEnum(NULL),
      mGetHandle(NULL) {
    if (mLibHandle != NULL) {
        mInit = (InitFunc)dlsym(mLibHandle, "TIOMX_Init");
        mDeinit = (DeinitFunc)dlsym(mLibHandle, "TIOMX_DeInit");

        mComponentNameEnum =
            (ComponentNameEnumFunc)dlsym(mLibHandle, "TIOMX_ComponentNameEnum");

        mGetHandle = (GetHandleFunc)dlsym(mLibHandle, "TIOMX_GetHandle");

        (*mInit)();
    }
}

TIOMXPlugin::~TIOMXPlugin() {
    if (mLibHandle != NULL) {
        (*mDeinit)();

        dlclose(mLibHandle);
        mLibHandle = NULL;
    }
}

OMX_ERRORTYPE TIOMXPlugin::makeComponentInstance(
        const char *name,
        const OMX_CALLBACKTYPE *callbacks,
        OMX_PTR appData,
        OMX_COMPONENTTYPE **component) {
    if (mLibHandle == NULL) {
        return OMX_ErrorUndefined;
    }

    return (*mGetHandle)(
            reinterpret_cast<OMX_HANDLETYPE *>(component),
            const_cast<char *>(name),
            appData, const_cast<OMX_CALLBACKTYPE *>(callbacks));
}

OMX_ERRORTYPE TIOMXPlugin::enumerateComponents(
        OMX_STRING name,
        size_t size,
        OMX_U32 index) {
    if (mLibHandle == NULL) {
        return OMX_ErrorUndefined;
    }

    return (*mComponentNameEnum)(name, size, index);
}

}  // namespace android