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/CallChain.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) 2006-2013 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_CALLCHAIN_H
MikamiUitOpen 2:dcaee06f6ccb 17 #define MBED_CALLCHAIN_H
MikamiUitOpen 2:dcaee06f6ccb 18
MikamiUitOpen 2:dcaee06f6ccb 19 #include "FunctionPointer.h"
MikamiUitOpen 2:dcaee06f6ccb 20 #include <string.h>
MikamiUitOpen 2:dcaee06f6ccb 21
MikamiUitOpen 2:dcaee06f6ccb 22 namespace mbed {
MikamiUitOpen 2:dcaee06f6ccb 23
MikamiUitOpen 2:dcaee06f6ccb 24 /** Group one or more functions in an instance of a CallChain, then call them in
MikamiUitOpen 2:dcaee06f6ccb 25 * sequence using CallChain::call(). Used mostly by the interrupt chaining code,
MikamiUitOpen 2:dcaee06f6ccb 26 * but can be used for other purposes.
MikamiUitOpen 2:dcaee06f6ccb 27 *
MikamiUitOpen 2:dcaee06f6ccb 28 * Example:
MikamiUitOpen 2:dcaee06f6ccb 29 * @code
MikamiUitOpen 2:dcaee06f6ccb 30 * #include "mbed.h"
MikamiUitOpen 2:dcaee06f6ccb 31 *
MikamiUitOpen 2:dcaee06f6ccb 32 * CallChain chain;
MikamiUitOpen 2:dcaee06f6ccb 33 *
MikamiUitOpen 2:dcaee06f6ccb 34 * void first(void) {
MikamiUitOpen 2:dcaee06f6ccb 35 * printf("'first' function.\n");
MikamiUitOpen 2:dcaee06f6ccb 36 * }
MikamiUitOpen 2:dcaee06f6ccb 37 *
MikamiUitOpen 2:dcaee06f6ccb 38 * void second(void) {
MikamiUitOpen 2:dcaee06f6ccb 39 * printf("'second' function.\n");
MikamiUitOpen 2:dcaee06f6ccb 40 * }
MikamiUitOpen 2:dcaee06f6ccb 41 *
MikamiUitOpen 2:dcaee06f6ccb 42 * class Test {
MikamiUitOpen 2:dcaee06f6ccb 43 * public:
MikamiUitOpen 2:dcaee06f6ccb 44 * void f(void) {
MikamiUitOpen 2:dcaee06f6ccb 45 * printf("A::f (class member).\n");
MikamiUitOpen 2:dcaee06f6ccb 46 * }
MikamiUitOpen 2:dcaee06f6ccb 47 * };
MikamiUitOpen 2:dcaee06f6ccb 48 *
MikamiUitOpen 2:dcaee06f6ccb 49 * int main() {
MikamiUitOpen 2:dcaee06f6ccb 50 * Test test;
MikamiUitOpen 2:dcaee06f6ccb 51 *
MikamiUitOpen 2:dcaee06f6ccb 52 * chain.add(second);
MikamiUitOpen 2:dcaee06f6ccb 53 * chain.add_front(first);
MikamiUitOpen 2:dcaee06f6ccb 54 * chain.add(&test, &Test::f);
MikamiUitOpen 2:dcaee06f6ccb 55 * chain.call();
MikamiUitOpen 2:dcaee06f6ccb 56 * }
MikamiUitOpen 2:dcaee06f6ccb 57 * @endcode
MikamiUitOpen 2:dcaee06f6ccb 58 */
MikamiUitOpen 2:dcaee06f6ccb 59
MikamiUitOpen 2:dcaee06f6ccb 60 typedef FunctionPointer* pFunctionPointer_t;
MikamiUitOpen 2:dcaee06f6ccb 61
MikamiUitOpen 2:dcaee06f6ccb 62 class CallChain {
MikamiUitOpen 2:dcaee06f6ccb 63 public:
MikamiUitOpen 2:dcaee06f6ccb 64 /** Create an empty chain
MikamiUitOpen 2:dcaee06f6ccb 65 *
MikamiUitOpen 2:dcaee06f6ccb 66 * @param size (optional) Initial size of the chain
MikamiUitOpen 2:dcaee06f6ccb 67 */
MikamiUitOpen 2:dcaee06f6ccb 68 CallChain(int size = 4);
MikamiUitOpen 2:dcaee06f6ccb 69 virtual ~CallChain();
MikamiUitOpen 2:dcaee06f6ccb 70
MikamiUitOpen 2:dcaee06f6ccb 71 /** Add a function at the end of the chain
MikamiUitOpen 2:dcaee06f6ccb 72 *
MikamiUitOpen 2:dcaee06f6ccb 73 * @param function A pointer to a void function
MikamiUitOpen 2:dcaee06f6ccb 74 *
MikamiUitOpen 2:dcaee06f6ccb 75 * @returns
MikamiUitOpen 2:dcaee06f6ccb 76 * The function object created for 'function'
MikamiUitOpen 2:dcaee06f6ccb 77 */
MikamiUitOpen 2:dcaee06f6ccb 78 pFunctionPointer_t add(void (*function)(void));
MikamiUitOpen 2:dcaee06f6ccb 79
MikamiUitOpen 2:dcaee06f6ccb 80 /** Add a function at the end of the chain
MikamiUitOpen 2:dcaee06f6ccb 81 *
MikamiUitOpen 2:dcaee06f6ccb 82 * @param tptr pointer to the object to call the member function on
MikamiUitOpen 2:dcaee06f6ccb 83 * @param mptr pointer to the member function to be called
MikamiUitOpen 2:dcaee06f6ccb 84 *
MikamiUitOpen 2:dcaee06f6ccb 85 * @returns
MikamiUitOpen 2:dcaee06f6ccb 86 * The function object created for 'tptr' and 'mptr'
MikamiUitOpen 2:dcaee06f6ccb 87 */
MikamiUitOpen 2:dcaee06f6ccb 88 template<typename T>
MikamiUitOpen 2:dcaee06f6ccb 89 pFunctionPointer_t add(T *tptr, void (T::*mptr)(void)) {
MikamiUitOpen 2:dcaee06f6ccb 90 return common_add(new FunctionPointer(tptr, mptr));
MikamiUitOpen 2:dcaee06f6ccb 91 }
MikamiUitOpen 2:dcaee06f6ccb 92
MikamiUitOpen 2:dcaee06f6ccb 93 /** Add a function at the beginning of the chain
MikamiUitOpen 2:dcaee06f6ccb 94 *
MikamiUitOpen 2:dcaee06f6ccb 95 * @param function A pointer to a void function
MikamiUitOpen 2:dcaee06f6ccb 96 *
MikamiUitOpen 2:dcaee06f6ccb 97 * @returns
MikamiUitOpen 2:dcaee06f6ccb 98 * The function object created for 'function'
MikamiUitOpen 2:dcaee06f6ccb 99 */
MikamiUitOpen 2:dcaee06f6ccb 100 pFunctionPointer_t add_front(void (*function)(void));
MikamiUitOpen 2:dcaee06f6ccb 101
MikamiUitOpen 2:dcaee06f6ccb 102 /** Add a function at the beginning of the chain
MikamiUitOpen 2:dcaee06f6ccb 103 *
MikamiUitOpen 2:dcaee06f6ccb 104 * @param tptr pointer to the object to call the member function on
MikamiUitOpen 2:dcaee06f6ccb 105 * @param mptr pointer to the member function to be called
MikamiUitOpen 2:dcaee06f6ccb 106 *
MikamiUitOpen 2:dcaee06f6ccb 107 * @returns
MikamiUitOpen 2:dcaee06f6ccb 108 * The function object created for 'tptr' and 'mptr'
MikamiUitOpen 2:dcaee06f6ccb 109 */
MikamiUitOpen 2:dcaee06f6ccb 110 template<typename T>
MikamiUitOpen 2:dcaee06f6ccb 111 pFunctionPointer_t add_front(T *tptr, void (T::*mptr)(void)) {
MikamiUitOpen 2:dcaee06f6ccb 112 return common_add_front(new FunctionPointer(tptr, mptr));
MikamiUitOpen 2:dcaee06f6ccb 113 }
MikamiUitOpen 2:dcaee06f6ccb 114
MikamiUitOpen 2:dcaee06f6ccb 115 /** Get the number of functions in the chain
MikamiUitOpen 2:dcaee06f6ccb 116 */
MikamiUitOpen 2:dcaee06f6ccb 117 int size() const;
MikamiUitOpen 2:dcaee06f6ccb 118
MikamiUitOpen 2:dcaee06f6ccb 119 /** Get a function object from the chain
MikamiUitOpen 2:dcaee06f6ccb 120 *
MikamiUitOpen 2:dcaee06f6ccb 121 * @param i function object index
MikamiUitOpen 2:dcaee06f6ccb 122 *
MikamiUitOpen 2:dcaee06f6ccb 123 * @returns
MikamiUitOpen 2:dcaee06f6ccb 124 * The function object at position 'i' in the chain
MikamiUitOpen 2:dcaee06f6ccb 125 */
MikamiUitOpen 2:dcaee06f6ccb 126 pFunctionPointer_t get(int i) const;
MikamiUitOpen 2:dcaee06f6ccb 127
MikamiUitOpen 2:dcaee06f6ccb 128 /** Look for a function object in the call chain
MikamiUitOpen 2:dcaee06f6ccb 129 *
MikamiUitOpen 2:dcaee06f6ccb 130 * @param f the function object to search
MikamiUitOpen 2:dcaee06f6ccb 131 *
MikamiUitOpen 2:dcaee06f6ccb 132 * @returns
MikamiUitOpen 2:dcaee06f6ccb 133 * The index of the function object if found, -1 otherwise.
MikamiUitOpen 2:dcaee06f6ccb 134 */
MikamiUitOpen 2:dcaee06f6ccb 135 int find(pFunctionPointer_t f) const;
MikamiUitOpen 2:dcaee06f6ccb 136
MikamiUitOpen 2:dcaee06f6ccb 137 /** Clear the call chain (remove all functions in the chain).
MikamiUitOpen 2:dcaee06f6ccb 138 */
MikamiUitOpen 2:dcaee06f6ccb 139 void clear();
MikamiUitOpen 2:dcaee06f6ccb 140
MikamiUitOpen 2:dcaee06f6ccb 141 /** Remove a function object from the chain
MikamiUitOpen 2:dcaee06f6ccb 142 *
MikamiUitOpen 2:dcaee06f6ccb 143 * @arg f the function object to remove
MikamiUitOpen 2:dcaee06f6ccb 144 *
MikamiUitOpen 2:dcaee06f6ccb 145 * @returns
MikamiUitOpen 2:dcaee06f6ccb 146 * true if the function object was found and removed, false otherwise.
MikamiUitOpen 2:dcaee06f6ccb 147 */
MikamiUitOpen 2:dcaee06f6ccb 148 bool remove(pFunctionPointer_t f);
MikamiUitOpen 2:dcaee06f6ccb 149
MikamiUitOpen 2:dcaee06f6ccb 150 /** Call all the functions in the chain in sequence
MikamiUitOpen 2:dcaee06f6ccb 151 */
MikamiUitOpen 2:dcaee06f6ccb 152 void call();
MikamiUitOpen 2:dcaee06f6ccb 153
MikamiUitOpen 2:dcaee06f6ccb 154 #ifdef MBED_OPERATORS
MikamiUitOpen 2:dcaee06f6ccb 155 void operator ()(void) {
MikamiUitOpen 2:dcaee06f6ccb 156 call();
MikamiUitOpen 2:dcaee06f6ccb 157 }
MikamiUitOpen 2:dcaee06f6ccb 158 pFunctionPointer_t operator [](int i) const {
MikamiUitOpen 2:dcaee06f6ccb 159 return get(i);
MikamiUitOpen 2:dcaee06f6ccb 160 }
MikamiUitOpen 2:dcaee06f6ccb 161 #endif
MikamiUitOpen 2:dcaee06f6ccb 162
MikamiUitOpen 2:dcaee06f6ccb 163 private:
MikamiUitOpen 2:dcaee06f6ccb 164 void _check_size();
MikamiUitOpen 2:dcaee06f6ccb 165 pFunctionPointer_t common_add(pFunctionPointer_t pf);
MikamiUitOpen 2:dcaee06f6ccb 166 pFunctionPointer_t common_add_front(pFunctionPointer_t pf);
MikamiUitOpen 2:dcaee06f6ccb 167
MikamiUitOpen 2:dcaee06f6ccb 168 pFunctionPointer_t* _chain;
MikamiUitOpen 2:dcaee06f6ccb 169 int _size;
MikamiUitOpen 2:dcaee06f6ccb 170 int _elements;
MikamiUitOpen 2:dcaee06f6ccb 171
MikamiUitOpen 2:dcaee06f6ccb 172 /* disallow copy constructor and assignment operators */
MikamiUitOpen 2:dcaee06f6ccb 173 private:
MikamiUitOpen 2:dcaee06f6ccb 174 CallChain(const CallChain&);
MikamiUitOpen 2:dcaee06f6ccb 175 CallChain & operator = (const CallChain&);
MikamiUitOpen 2:dcaee06f6ccb 176 };
MikamiUitOpen 2:dcaee06f6ccb 177
MikamiUitOpen 2:dcaee06f6ccb 178 } // namespace mbed
MikamiUitOpen 2:dcaee06f6ccb 179
MikamiUitOpen 2:dcaee06f6ccb 180 #endif
MikamiUitOpen 2:dcaee06f6ccb 181