不韋 呂 / F746_SD_VarableFilter

SD card player with variable cotoff frequency lowpass and highpass IIR filter. SD カードの *.wav ファイルのオーディオ信号を，遮断周波数可変 IIR 低域通過および高域通過フィルタを通して，ボードに搭載されているCODEC で出力する．このプログラムについては，CQ出版社インターフェース誌 2018年8月号で解説している．

Dependencies:   F746_GUI F746_SAI_IO FrequencyResponseDrawer SD_PlayerSkeleton

mbed_src_STM32F7/api/FunctionPointer.h@11:399670d24ed9, 2017-04-10 (annotated)

Committer:
MikamiUitOpen
Date:
Mon Apr 10 01:44:22 2017 +0000
Revision:
11:399670d24ed9
Parent:
2:dcaee06f6ccb 
12

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 2:dcaee06f6ccb 1 /* mbed Microcontroller Library
MikamiUitOpen 2:dcaee06f6ccb 2 * Copyright (c) 2006-2015 ARM Limited
MikamiUitOpen 2:dcaee06f6ccb 3 *
MikamiUitOpen 2:dcaee06f6ccb 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 2:dcaee06f6ccb 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 2:dcaee06f6ccb 6 * You may obtain a copy of the License at
MikamiUitOpen 2:dcaee06f6ccb 7 *
MikamiUitOpen 2:dcaee06f6ccb 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 2:dcaee06f6ccb 9 *
MikamiUitOpen 2:dcaee06f6ccb 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 2:dcaee06f6ccb 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 2:dcaee06f6ccb 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 2:dcaee06f6ccb 13 * See the License for the specific language governing permissions and
MikamiUitOpen 2:dcaee06f6ccb 14 * limitations under the License.
MikamiUitOpen 2:dcaee06f6ccb 15 */
MikamiUitOpen 2:dcaee06f6ccb 16 #ifndef MBED_FUNCTIONPOINTER_H
MikamiUitOpen 2:dcaee06f6ccb 17 #define MBED_FUNCTIONPOINTER_H
MikamiUitOpen 2:dcaee06f6ccb 18
MikamiUitOpen 2:dcaee06f6ccb 19 #include <string.h>
MikamiUitOpen 2:dcaee06f6ccb 20 #include <stdint.h>
MikamiUitOpen 2:dcaee06f6ccb 21
MikamiUitOpen 2:dcaee06f6ccb 22 namespace mbed {
MikamiUitOpen 2:dcaee06f6ccb 23
MikamiUitOpen 2:dcaee06f6ccb 24 /* If we had variaditic templates, this wouldn't be a problem, but until C++11 is enabled, we are stuck with multiple classes... */
MikamiUitOpen 2:dcaee06f6ccb 25
MikamiUitOpen 2:dcaee06f6ccb 26 /** A class for storing and calling a pointer to a static or member function
MikamiUitOpen 2:dcaee06f6ccb 27 */
MikamiUitOpen 2:dcaee06f6ccb 28 template <typename R, typename A1>
MikamiUitOpen 2:dcaee06f6ccb 29 class FunctionPointerArg1{
MikamiUitOpen 2:dcaee06f6ccb 30 public:
MikamiUitOpen 2:dcaee06f6ccb 31 /** Create a FunctionPointer, attaching a static function
MikamiUitOpen 2:dcaee06f6ccb 32 *
MikamiUitOpen 2:dcaee06f6ccb 33 * @param function The static function to attach (default is none)
MikamiUitOpen 2:dcaee06f6ccb 34 */
MikamiUitOpen 2:dcaee06f6ccb 35 FunctionPointerArg1(R (*function)(A1) = 0) {
MikamiUitOpen 2:dcaee06f6ccb 36 attach(function);
MikamiUitOpen 2:dcaee06f6ccb 37 }
MikamiUitOpen 2:dcaee06f6ccb 38
MikamiUitOpen 2:dcaee06f6ccb 39 /** Create a FunctionPointer, attaching a member function
MikamiUitOpen 2:dcaee06f6ccb 40 *
MikamiUitOpen 2:dcaee06f6ccb 41 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
MikamiUitOpen 2:dcaee06f6ccb 42 * @param function The address of the member function to attach
MikamiUitOpen 2:dcaee06f6ccb 43 */
MikamiUitOpen 2:dcaee06f6ccb 44 template<typename T>
MikamiUitOpen 2:dcaee06f6ccb 45 FunctionPointerArg1(T *object, R (T::*member)(A1)) {
MikamiUitOpen 2:dcaee06f6ccb 46 attach(object, member);
MikamiUitOpen 2:dcaee06f6ccb 47 }
MikamiUitOpen 2:dcaee06f6ccb 48
MikamiUitOpen 2:dcaee06f6ccb 49 /** Attach a static function
MikamiUitOpen 2:dcaee06f6ccb 50 *
MikamiUitOpen 2:dcaee06f6ccb 51 * @param function The static function to attach (default is none)
MikamiUitOpen 2:dcaee06f6ccb 52 */
MikamiUitOpen 2:dcaee06f6ccb 53 void attach(R (*function)(A1)) {
MikamiUitOpen 2:dcaee06f6ccb 54 _p.function = function;
MikamiUitOpen 2:dcaee06f6ccb 55 _membercaller = 0;
MikamiUitOpen 2:dcaee06f6ccb 56 }
MikamiUitOpen 2:dcaee06f6ccb 57
MikamiUitOpen 2:dcaee06f6ccb 58 /** Attach a member function
MikamiUitOpen 2:dcaee06f6ccb 59 *
MikamiUitOpen 2:dcaee06f6ccb 60 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
MikamiUitOpen 2:dcaee06f6ccb 61 * @param function The address of the member function to attach
MikamiUitOpen 2:dcaee06f6ccb 62 */
MikamiUitOpen 2:dcaee06f6ccb 63 template<typename T>
MikamiUitOpen 2:dcaee06f6ccb 64 void attach(T *object, R (T::*member)(A1)) {
MikamiUitOpen 2:dcaee06f6ccb 65 _p.object = static_cast<void*>(object);
MikamiUitOpen 2:dcaee06f6ccb 66 *reinterpret_cast<R (T::**)(A1)>(_member) = member;
MikamiUitOpen 2:dcaee06f6ccb 67 _membercaller = &FunctionPointerArg1::membercaller<T>;
MikamiUitOpen 2:dcaee06f6ccb 68 }
MikamiUitOpen 2:dcaee06f6ccb 69
MikamiUitOpen 2:dcaee06f6ccb 70 /** Call the attached static or member function
MikamiUitOpen 2:dcaee06f6ccb 71 */
MikamiUitOpen 2:dcaee06f6ccb 72 R call(A1 a) {
MikamiUitOpen 2:dcaee06f6ccb 73 if (_membercaller == 0 && _p.function) {
MikamiUitOpen 2:dcaee06f6ccb 74 return _p.function(a);
MikamiUitOpen 2:dcaee06f6ccb 75 } else if (_membercaller && _p.object) {
MikamiUitOpen 2:dcaee06f6ccb 76 return _membercaller(_p.object, _member, a);
MikamiUitOpen 2:dcaee06f6ccb 77 }
MikamiUitOpen 2:dcaee06f6ccb 78 return (R)0;
MikamiUitOpen 2:dcaee06f6ccb 79 }
MikamiUitOpen 2:dcaee06f6ccb 80
MikamiUitOpen 2:dcaee06f6ccb 81 /** Get registered static function
MikamiUitOpen 2:dcaee06f6ccb 82 */
MikamiUitOpen 2:dcaee06f6ccb 83 R(*get_function(A1))() {
MikamiUitOpen 2:dcaee06f6ccb 84 return _membercaller ? (R(*)(A1))0 : (R(*)(A1))_p.function;
MikamiUitOpen 2:dcaee06f6ccb 85 }
MikamiUitOpen 2:dcaee06f6ccb 86
MikamiUitOpen 2:dcaee06f6ccb 87 #ifdef MBED_OPERATORS
MikamiUitOpen 2:dcaee06f6ccb 88 R operator ()(A1 a) {
MikamiUitOpen 2:dcaee06f6ccb 89 return call(a);
MikamiUitOpen 2:dcaee06f6ccb 90 }
MikamiUitOpen 2:dcaee06f6ccb 91 operator bool(void) const {
MikamiUitOpen 2:dcaee06f6ccb 92 return (_membercaller != NULL ? _p.object : (void*)_p.function) != NULL;
MikamiUitOpen 2:dcaee06f6ccb 93 }
MikamiUitOpen 2:dcaee06f6ccb 94 #endif
MikamiUitOpen 2:dcaee06f6ccb 95 private:
MikamiUitOpen 2:dcaee06f6ccb 96 template<typename T>
MikamiUitOpen 2:dcaee06f6ccb 97 static R membercaller(void *object, uintptr_t *member, A1 a) {
MikamiUitOpen 2:dcaee06f6ccb 98 T* o = static_cast<T*>(object);
MikamiUitOpen 2:dcaee06f6ccb 99 R (T::**m)(A1) = reinterpret_cast<R (T::**)(A1)>(member);
MikamiUitOpen 2:dcaee06f6ccb 100 return (o->**m)(a);
MikamiUitOpen 2:dcaee06f6ccb 101 }
MikamiUitOpen 2:dcaee06f6ccb 102
MikamiUitOpen 2:dcaee06f6ccb 103 union {
MikamiUitOpen 2:dcaee06f6ccb 104 R (*function)(A1); // static function pointer
MikamiUitOpen 2:dcaee06f6ccb 105 void *object; // object this pointer
MikamiUitOpen 2:dcaee06f6ccb 106 } _p;
MikamiUitOpen 2:dcaee06f6ccb 107 uintptr_t _member[4]; // aligned raw member function pointer storage - converted back by registered _membercaller
MikamiUitOpen 2:dcaee06f6ccb 108 R (*_membercaller)(void*, uintptr_t*, A1); // registered membercaller function to convert back and call _m.member on _object
MikamiUitOpen 2:dcaee06f6ccb 109 };
MikamiUitOpen 2:dcaee06f6ccb 110
MikamiUitOpen 2:dcaee06f6ccb 111 /** A class for storing and calling a pointer to a static or member function (R ()(void))
MikamiUitOpen 2:dcaee06f6ccb 112 */
MikamiUitOpen 2:dcaee06f6ccb 113 template <typename R>
MikamiUitOpen 2:dcaee06f6ccb 114 class FunctionPointerArg1<R, void>{
MikamiUitOpen 2:dcaee06f6ccb 115 public:
MikamiUitOpen 2:dcaee06f6ccb 116 /** Create a FunctionPointer, attaching a static function
MikamiUitOpen 2:dcaee06f6ccb 117 *
MikamiUitOpen 2:dcaee06f6ccb 118 * @param function The static function to attach (default is none)
MikamiUitOpen 2:dcaee06f6ccb 119 */
MikamiUitOpen 2:dcaee06f6ccb 120 FunctionPointerArg1(R (*function)(void) = 0) {
MikamiUitOpen 2:dcaee06f6ccb 121 attach(function);
MikamiUitOpen 2:dcaee06f6ccb 122 }
MikamiUitOpen 2:dcaee06f6ccb 123
MikamiUitOpen 2:dcaee06f6ccb 124 /** Create a FunctionPointer, attaching a member function
MikamiUitOpen 2:dcaee06f6ccb 125 *
MikamiUitOpen 2:dcaee06f6ccb 126 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
MikamiUitOpen 2:dcaee06f6ccb 127 * @param function The address of the void member function to attach
MikamiUitOpen 2:dcaee06f6ccb 128 */
MikamiUitOpen 2:dcaee06f6ccb 129 template<typename T>
MikamiUitOpen 2:dcaee06f6ccb 130 FunctionPointerArg1(T *object, R (T::*member)(void)) {
MikamiUitOpen 2:dcaee06f6ccb 131 attach(object, member);
MikamiUitOpen 2:dcaee06f6ccb 132 }
MikamiUitOpen 2:dcaee06f6ccb 133
MikamiUitOpen 2:dcaee06f6ccb 134 /** Attach a static function
MikamiUitOpen 2:dcaee06f6ccb 135 *
MikamiUitOpen 2:dcaee06f6ccb 136 * @param function The void static function to attach (default is none)
MikamiUitOpen 2:dcaee06f6ccb 137 */
MikamiUitOpen 2:dcaee06f6ccb 138 void attach(R (*function)(void)) {
MikamiUitOpen 2:dcaee06f6ccb 139 _p.function = function;
MikamiUitOpen 2:dcaee06f6ccb 140 _membercaller = 0;
MikamiUitOpen 2:dcaee06f6ccb 141 }
MikamiUitOpen 2:dcaee06f6ccb 142
MikamiUitOpen 2:dcaee06f6ccb 143 /** Attach a member function
MikamiUitOpen 2:dcaee06f6ccb 144 *
MikamiUitOpen 2:dcaee06f6ccb 145 * @param object The object pointer to invoke the member function on (i.e. the this pointer)
MikamiUitOpen 2:dcaee06f6ccb 146 * @param function The address of the void member function to attach
MikamiUitOpen 2:dcaee06f6ccb 147 */
MikamiUitOpen 2:dcaee06f6ccb 148 template<typename T>
MikamiUitOpen 2:dcaee06f6ccb 149 void attach(T *object, R (T::*member)(void)) {
MikamiUitOpen 2:dcaee06f6ccb 150 _p.object = static_cast<void*>(object);
MikamiUitOpen 2:dcaee06f6ccb 151 *reinterpret_cast<R (T::**)(void)>(_member) = member;
MikamiUitOpen 2:dcaee06f6ccb 152 _membercaller = &FunctionPointerArg1::membercaller<T>;
MikamiUitOpen 2:dcaee06f6ccb 153 }
MikamiUitOpen 2:dcaee06f6ccb 154
MikamiUitOpen 2:dcaee06f6ccb 155 /** Call the attached static or member function
MikamiUitOpen 2:dcaee06f6ccb 156 */
MikamiUitOpen 2:dcaee06f6ccb 157 R call(){
MikamiUitOpen 2:dcaee06f6ccb 158 if (_membercaller == 0 && _p.function) {
MikamiUitOpen 2:dcaee06f6ccb 159 return _p.function();
MikamiUitOpen 2:dcaee06f6ccb 160 } else if (_membercaller && _p.object) {
MikamiUitOpen 2:dcaee06f6ccb 161 return _membercaller(_p.object, _member);
MikamiUitOpen 2:dcaee06f6ccb 162 }
MikamiUitOpen 2:dcaee06f6ccb 163 return (R)0;
MikamiUitOpen 2:dcaee06f6ccb 164 }
MikamiUitOpen 2:dcaee06f6ccb 165
MikamiUitOpen 2:dcaee06f6ccb 166 /** Get registered static function
MikamiUitOpen 2:dcaee06f6ccb 167 */
MikamiUitOpen 2:dcaee06f6ccb 168 R(*get_function())() {
MikamiUitOpen 2:dcaee06f6ccb 169 return _membercaller ? (R(*)())0 : (R(*)())_p.function;
MikamiUitOpen 2:dcaee06f6ccb 170 }
MikamiUitOpen 2:dcaee06f6ccb 171
MikamiUitOpen 2:dcaee06f6ccb 172 #ifdef MBED_OPERATORS
MikamiUitOpen 2:dcaee06f6ccb 173 R operator ()(void) {
MikamiUitOpen 2:dcaee06f6ccb 174 return call();
MikamiUitOpen 2:dcaee06f6ccb 175 }
MikamiUitOpen 2:dcaee06f6ccb 176 operator bool(void) const {
MikamiUitOpen 2:dcaee06f6ccb 177 return (_membercaller != NULL ? _p.object : (void*)_p.function) != NULL;
MikamiUitOpen 2:dcaee06f6ccb 178 }
MikamiUitOpen 2:dcaee06f6ccb 179 #endif
MikamiUitOpen 2:dcaee06f6ccb 180
MikamiUitOpen 2:dcaee06f6ccb 181 private:
MikamiUitOpen 2:dcaee06f6ccb 182 template<typename T>
MikamiUitOpen 2:dcaee06f6ccb 183 static R membercaller(void *object, uintptr_t *member) {
MikamiUitOpen 2:dcaee06f6ccb 184 T* o = static_cast<T*>(object);
MikamiUitOpen 2:dcaee06f6ccb 185 R (T::**m)(void) = reinterpret_cast<R (T::**)(void)>(member);
MikamiUitOpen 2:dcaee06f6ccb 186 return (o->**m)();
MikamiUitOpen 2:dcaee06f6ccb 187 }
MikamiUitOpen 2:dcaee06f6ccb 188
MikamiUitOpen 2:dcaee06f6ccb 189 union {
MikamiUitOpen 2:dcaee06f6ccb 190 R (*function)(void); // static function pointer
MikamiUitOpen 2:dcaee06f6ccb 191 void *object; // object this pointer
MikamiUitOpen 2:dcaee06f6ccb 192 } _p;
MikamiUitOpen 2:dcaee06f6ccb 193 uintptr_t _member[4]; // aligned raw member function pointer storage - converted back by registered _membercaller
MikamiUitOpen 2:dcaee06f6ccb 194 R (*_membercaller)(void*, uintptr_t*); // registered membercaller function to convert back and call _m.member on _object
MikamiUitOpen 2:dcaee06f6ccb 195 };
MikamiUitOpen 2:dcaee06f6ccb 196
MikamiUitOpen 2:dcaee06f6ccb 197 typedef FunctionPointerArg1<void, void> FunctionPointer;
MikamiUitOpen 2:dcaee06f6ccb 198 typedef FunctionPointerArg1<void, int> event_callback_t;
MikamiUitOpen 2:dcaee06f6ccb 199
MikamiUitOpen 2:dcaee06f6ccb 200 } // namespace mbed
MikamiUitOpen 2:dcaee06f6ccb 201
MikamiUitOpen 2:dcaee06f6ccb 202 #endif