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/*
* Copyright (C) 2011 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.
*/
#ifndef ANDROID_FILTERFW_CORE_NATIVE_PROGRAM_H
#define ANDROID_FILTERFW_CORE_NATIVE_PROGRAM_H
#include <vector>
#include <string>
#include "base/utilities.h"
namespace android {
namespace filterfw {
class NativeFrame;
typedef void (*InitFunctionPtr)(void**);
typedef void (*SetValueFunctionPtr)(const char*, const char*, void*);
typedef void (*GetValueFunctionPtr)(const char*, char*, int, void*);
typedef int (*ProcessFunctionPtr)(const char**, const int*, int, char*, int, void*);
typedef void (*ResetFunctionPtr)(void*);
typedef void (*TeardownFunctionPtr)(void*);
class NativeProgram {
public:
// Create an empty native frame.
NativeProgram();
~NativeProgram();
bool OpenLibrary(const std::string& lib_name);
bool BindInitFunction(const std::string& func_name);
bool BindSetValueFunction(const std::string& func_name);
bool BindGetValueFunction(const std::string& func_name);
bool BindProcessFunction(const std::string& func_name);
bool BindResetFunction(const std::string& func_name);
bool BindTeardownFunction(const std::string& func_name);
bool CallInit();
bool CallSetValue(const std::string& key, const std::string& value);
std::string CallGetValue(const std::string& key);
bool CallProcess(const std::vector<const char*>& inputs,
const std::vector<int>& input_sizes,
char* output,
int output_size);
bool CallReset();
bool CallTeardown();
private:
// Pointer to the data. Owned by the frame.
void* lib_handle_;
// The function pointers to the native function implementations.
InitFunctionPtr init_function_;
SetValueFunctionPtr setvalue_function_;
GetValueFunctionPtr getvalue_function_;
ProcessFunctionPtr process_function_;
ResetFunctionPtr reset_function_;
TeardownFunctionPtr teardown_function_;
// Pointer to user data
void* user_data_;
DISALLOW_COPY_AND_ASSIGN(NativeProgram);
};
} // namespace filterfw
} // namespace android
#endif // ANDROID_FILTERFW_CORE_NATIVE_PROGRAM_H
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