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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.
*/
#include <dlfcn.h>
#include "base/logging.h"
#include "core/native_frame.h"
#include "core/native_program.h"
#include <string>
#include <vector>
namespace android {
namespace filterfw {
NativeProgram::NativeProgram()
: lib_handle_(NULL),
init_function_(NULL),
setvalue_function_(NULL),
getvalue_function_(NULL),
process_function_(NULL),
reset_function_(NULL),
teardown_function_(NULL),
user_data_(NULL) {
}
NativeProgram::~NativeProgram() {
if (lib_handle_)
dlclose(lib_handle_);
}
bool NativeProgram::OpenLibrary(const std::string& lib_name) {
if (!lib_handle_) {
lib_handle_ = dlopen(lib_name.c_str(), RTLD_NOW);
if (!lib_handle_) {
ALOGE("NativeProgram: Error opening library: '%s': %s", lib_name.c_str(), dlerror());
return false;
}
return true;
}
return false;
}
bool NativeProgram::BindProcessFunction(const std::string& func_name) {
if (!lib_handle_)
return false;
process_function_ = reinterpret_cast<ProcessFunctionPtr>(dlsym(lib_handle_, func_name.c_str()));
if (!process_function_) {
ALOGE("NativeProgram: Could not find process function symbol: '%s'!", func_name.c_str());
return false;
}
return true;
}
bool NativeProgram::BindInitFunction(const std::string& func_name) {
if (!lib_handle_)
return false;
init_function_ = reinterpret_cast<InitFunctionPtr>(dlsym(lib_handle_, func_name.c_str()));
return init_function_ != NULL;
}
bool NativeProgram::BindSetValueFunction(const std::string& func_name) {
if (!lib_handle_)
return false;
setvalue_function_ = reinterpret_cast<SetValueFunctionPtr>(dlsym(lib_handle_, func_name.c_str()));
return setvalue_function_ != NULL;
}
bool NativeProgram::BindGetValueFunction(const std::string& func_name) {
if (!lib_handle_)
return false;
getvalue_function_ = reinterpret_cast<GetValueFunctionPtr>(dlsym(lib_handle_, func_name.c_str()));
return getvalue_function_ != NULL;
}
bool NativeProgram::BindResetFunction(const std::string& func_name) {
if (!lib_handle_)
return false;
reset_function_ = reinterpret_cast<ResetFunctionPtr>(dlsym(lib_handle_, func_name.c_str()));
return reset_function_ != NULL;
}
bool NativeProgram::BindTeardownFunction(const std::string& func_name) {
if (!lib_handle_)
return false;
teardown_function_ = reinterpret_cast<TeardownFunctionPtr>(dlsym(lib_handle_, func_name.c_str()));
return teardown_function_ != NULL;
}
bool NativeProgram::CallProcess(const std::vector<const char*>& inputs,
const std::vector<int>& input_sizes,
char* output,
int output_size) {
if (process_function_) {
return process_function_(const_cast<const char**>(&inputs[0]),
&input_sizes[0],
inputs.size(),
output,
output_size,
user_data_) == 1;
}
return false;
}
bool NativeProgram::CallInit() {
if (init_function_) {
init_function_(&user_data_);
return true;
}
return false;
}
bool NativeProgram::CallSetValue(const std::string& key, const std::string& value) {
if (setvalue_function_) {
setvalue_function_(key.c_str(), value.c_str(), user_data_);
return true;
}
return false;
}
std::string NativeProgram::CallGetValue(const std::string& key) {
if (getvalue_function_) {
static const int buffer_size = 1024;
char result[buffer_size];
result[buffer_size - 1] = '\0';
getvalue_function_(key.c_str(), result, buffer_size, user_data_);
return std::string(result);
}
return std::string();
}
bool NativeProgram::CallReset() {
if (reset_function_) {
reset_function_(user_data_);
return true;
}
return false;
}
bool NativeProgram::CallTeardown() {
if (teardown_function_) {
teardown_function_(user_data_);
return true;
}
return false;
}
} // namespace filterfw
} // namespace android
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