Marius Renn | 65953da | 2012-03-27 10:44:45 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 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 | #include <dlfcn.h> |
| 18 | |
| 19 | #include "base/logging.h" |
| 20 | #include "core/native_frame.h" |
| 21 | #include "core/native_program.h" |
| 22 | |
| 23 | #include <string> |
| 24 | #include <vector> |
| 25 | |
| 26 | namespace android { |
| 27 | namespace filterfw { |
| 28 | |
| 29 | NativeProgram::NativeProgram() |
| 30 | : lib_handle_(NULL), |
| 31 | init_function_(NULL), |
| 32 | setvalue_function_(NULL), |
| 33 | getvalue_function_(NULL), |
| 34 | process_function_(NULL), |
| 35 | reset_function_(NULL), |
| 36 | teardown_function_(NULL), |
| 37 | user_data_(NULL) { |
| 38 | } |
| 39 | |
| 40 | NativeProgram::~NativeProgram() { |
| 41 | if (lib_handle_) |
| 42 | dlclose(lib_handle_); |
| 43 | } |
| 44 | |
| 45 | bool NativeProgram::OpenLibrary(const std::string& lib_name) { |
| 46 | if (!lib_handle_) { |
| 47 | lib_handle_ = dlopen(lib_name.c_str(), RTLD_NOW); |
| 48 | if (!lib_handle_) { |
| 49 | ALOGE("NativeProgram: Error opening library: '%s': %s", lib_name.c_str(), dlerror()); |
| 50 | return false; |
| 51 | } |
| 52 | return true; |
| 53 | } |
| 54 | return false; |
| 55 | } |
| 56 | |
| 57 | bool NativeProgram::BindProcessFunction(const std::string& func_name) { |
| 58 | if (!lib_handle_) |
| 59 | return false; |
| 60 | process_function_ = reinterpret_cast<ProcessFunctionPtr>(dlsym(lib_handle_, func_name.c_str())); |
| 61 | if (!process_function_) { |
| 62 | ALOGE("NativeProgram: Could not find process function symbol: '%s'!", func_name.c_str()); |
| 63 | return false; |
| 64 | } |
| 65 | return true; |
| 66 | } |
| 67 | |
| 68 | bool NativeProgram::BindInitFunction(const std::string& func_name) { |
| 69 | if (!lib_handle_) |
| 70 | return false; |
| 71 | init_function_ = reinterpret_cast<InitFunctionPtr>(dlsym(lib_handle_, func_name.c_str())); |
| 72 | return init_function_ != NULL; |
| 73 | } |
| 74 | |
| 75 | bool NativeProgram::BindSetValueFunction(const std::string& func_name) { |
| 76 | if (!lib_handle_) |
| 77 | return false; |
| 78 | setvalue_function_ = reinterpret_cast<SetValueFunctionPtr>(dlsym(lib_handle_, func_name.c_str())); |
| 79 | return setvalue_function_ != NULL; |
| 80 | } |
| 81 | |
| 82 | bool NativeProgram::BindGetValueFunction(const std::string& func_name) { |
| 83 | if (!lib_handle_) |
| 84 | return false; |
| 85 | getvalue_function_ = reinterpret_cast<GetValueFunctionPtr>(dlsym(lib_handle_, func_name.c_str())); |
| 86 | return getvalue_function_ != NULL; |
| 87 | } |
| 88 | |
| 89 | bool NativeProgram::BindResetFunction(const std::string& func_name) { |
| 90 | if (!lib_handle_) |
| 91 | return false; |
| 92 | reset_function_ = reinterpret_cast<ResetFunctionPtr>(dlsym(lib_handle_, func_name.c_str())); |
| 93 | return reset_function_ != NULL; |
| 94 | } |
| 95 | |
| 96 | bool NativeProgram::BindTeardownFunction(const std::string& func_name) { |
| 97 | if (!lib_handle_) |
| 98 | return false; |
| 99 | teardown_function_ = reinterpret_cast<TeardownFunctionPtr>(dlsym(lib_handle_, func_name.c_str())); |
| 100 | return teardown_function_ != NULL; |
| 101 | } |
| 102 | |
| 103 | bool NativeProgram::CallProcess(const std::vector<const char*>& inputs, |
| 104 | const std::vector<int>& input_sizes, |
| 105 | char* output, |
| 106 | int output_size) { |
| 107 | if (process_function_) { |
| 108 | return process_function_(const_cast<const char**>(&inputs[0]), |
| 109 | &input_sizes[0], |
| 110 | inputs.size(), |
| 111 | output, |
| 112 | output_size, |
| 113 | user_data_) == 1; |
| 114 | } |
| 115 | return false; |
| 116 | } |
| 117 | |
| 118 | bool NativeProgram::CallInit() { |
| 119 | if (init_function_) { |
| 120 | init_function_(&user_data_); |
| 121 | return true; |
| 122 | } |
| 123 | return false; |
| 124 | } |
| 125 | |
| 126 | bool NativeProgram::CallSetValue(const std::string& key, const std::string& value) { |
| 127 | if (setvalue_function_) { |
| 128 | setvalue_function_(key.c_str(), value.c_str(), user_data_); |
| 129 | return true; |
| 130 | } |
| 131 | return false; |
| 132 | } |
| 133 | |
| 134 | std::string NativeProgram::CallGetValue(const std::string& key) { |
| 135 | if (getvalue_function_) { |
| 136 | static const int buffer_size = 1024; |
| 137 | char result[buffer_size]; |
| 138 | result[buffer_size - 1] = '\0'; |
| 139 | getvalue_function_(key.c_str(), result, buffer_size, user_data_); |
| 140 | return std::string(result); |
| 141 | } |
| 142 | return std::string(); |
| 143 | } |
| 144 | |
| 145 | bool NativeProgram::CallReset() { |
| 146 | if (reset_function_) { |
| 147 | reset_function_(user_data_); |
| 148 | return true; |
| 149 | } |
| 150 | return false; |
| 151 | } |
| 152 | |
| 153 | bool NativeProgram::CallTeardown() { |
| 154 | if (teardown_function_) { |
| 155 | teardown_function_(user_data_); |
| 156 | return true; |
| 157 | } |
| 158 | return false; |
| 159 | } |
| 160 | |
| 161 | } // namespace filterfw |
| 162 | } // namespace android |