不韋 呂 / F746_SD_GraphicEqualizer

Output the audio signal with filtering by graphic equalizer in the *.wav file on the SD card using onboard CODEC. SD カードの *.wav ファイルのオーディオ信号をグラフィック･イコライザを通して，ボードに搭載されているCODEC で出力する．

Dependencies:   F746_GUI F746_SAI_IO SD_PlayerSkeleton FrequencyResponseDrawer

mbed_src_STM32F7/common/FileBase.cpp@16:cbb726ac20d8, 2016-10-02 (annotated)

Committer:
MikamiUitOpen
Date:
Sun Oct 02 06:33:59 2016 +0000
Revision:
16:cbb726ac20d8
17

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 16:cbb726ac20d8 1 /* mbed Microcontroller Library
MikamiUitOpen 16:cbb726ac20d8 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 16:cbb726ac20d8 3 *
MikamiUitOpen 16:cbb726ac20d8 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 16:cbb726ac20d8 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 16:cbb726ac20d8 6 * You may obtain a copy of the License at
MikamiUitOpen 16:cbb726ac20d8 7 *
MikamiUitOpen 16:cbb726ac20d8 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 16:cbb726ac20d8 9 *
MikamiUitOpen 16:cbb726ac20d8 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 16:cbb726ac20d8 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 16:cbb726ac20d8 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 16:cbb726ac20d8 13 * See the License for the specific language governing permissions and
MikamiUitOpen 16:cbb726ac20d8 14 * limitations under the License.
MikamiUitOpen 16:cbb726ac20d8 15 */
MikamiUitOpen 16:cbb726ac20d8 16 #include "FileBase.h"
MikamiUitOpen 16:cbb726ac20d8 17
MikamiUitOpen 16:cbb726ac20d8 18 namespace mbed {
MikamiUitOpen 16:cbb726ac20d8 19
MikamiUitOpen 16:cbb726ac20d8 20 FileBase *FileBase::_head = NULL;
MikamiUitOpen 16:cbb726ac20d8 21
MikamiUitOpen 16:cbb726ac20d8 22 FileBase::FileBase(const char *name, PathType t) : _next(NULL),
MikamiUitOpen 16:cbb726ac20d8 23 _name(name),
MikamiUitOpen 16:cbb726ac20d8 24 _path_type(t) {
MikamiUitOpen 16:cbb726ac20d8 25 if (name != NULL) {
MikamiUitOpen 16:cbb726ac20d8 26 // put this object at head of the list
MikamiUitOpen 16:cbb726ac20d8 27 _next = _head;
MikamiUitOpen 16:cbb726ac20d8 28 _head = this;
MikamiUitOpen 16:cbb726ac20d8 29 } else {
MikamiUitOpen 16:cbb726ac20d8 30 _next = NULL;
MikamiUitOpen 16:cbb726ac20d8 31 }
MikamiUitOpen 16:cbb726ac20d8 32 }
MikamiUitOpen 16:cbb726ac20d8 33
MikamiUitOpen 16:cbb726ac20d8 34 FileBase::~FileBase() {
MikamiUitOpen 16:cbb726ac20d8 35 if (_name != NULL) {
MikamiUitOpen 16:cbb726ac20d8 36 // remove this object from the list
MikamiUitOpen 16:cbb726ac20d8 37 if (_head == this) { // first in the list, so just drop me
MikamiUitOpen 16:cbb726ac20d8 38 _head = _next;
MikamiUitOpen 16:cbb726ac20d8 39 } else { // find the object before me, then drop me
MikamiUitOpen 16:cbb726ac20d8 40 FileBase *p = _head;
MikamiUitOpen 16:cbb726ac20d8 41 while (p->_next != this) {
MikamiUitOpen 16:cbb726ac20d8 42 p = p->_next;
MikamiUitOpen 16:cbb726ac20d8 43 }
MikamiUitOpen 16:cbb726ac20d8 44 p->_next = _next;
MikamiUitOpen 16:cbb726ac20d8 45 }
MikamiUitOpen 16:cbb726ac20d8 46 }
MikamiUitOpen 16:cbb726ac20d8 47 }
MikamiUitOpen 16:cbb726ac20d8 48
MikamiUitOpen 16:cbb726ac20d8 49 FileBase *FileBase::lookup(const char *name, unsigned int len) {
MikamiUitOpen 16:cbb726ac20d8 50 FileBase *p = _head;
MikamiUitOpen 16:cbb726ac20d8 51 while (p != NULL) {
MikamiUitOpen 16:cbb726ac20d8 52 /* Check that p->_name matches name and is the correct length */
MikamiUitOpen 16:cbb726ac20d8 53 if (p->_name != NULL && std::strncmp(p->_name, name, len) == 0 && std::strlen(p->_name) == len) {
MikamiUitOpen 16:cbb726ac20d8 54 return p;
MikamiUitOpen 16:cbb726ac20d8 55 }
MikamiUitOpen 16:cbb726ac20d8 56 p = p->_next;
MikamiUitOpen 16:cbb726ac20d8 57 }
MikamiUitOpen 16:cbb726ac20d8 58 return NULL;
MikamiUitOpen 16:cbb726ac20d8 59 }
MikamiUitOpen 16:cbb726ac20d8 60
MikamiUitOpen 16:cbb726ac20d8 61 FileBase *FileBase::get(int n) {
MikamiUitOpen 16:cbb726ac20d8 62 FileBase *p = _head;
MikamiUitOpen 16:cbb726ac20d8 63 int m = 0;
MikamiUitOpen 16:cbb726ac20d8 64 while (p != NULL) {
MikamiUitOpen 16:cbb726ac20d8 65 if (m == n) return p;
MikamiUitOpen 16:cbb726ac20d8 66
MikamiUitOpen 16:cbb726ac20d8 67 m++;
MikamiUitOpen 16:cbb726ac20d8 68 p = p->_next;
MikamiUitOpen 16:cbb726ac20d8 69 }
MikamiUitOpen 16:cbb726ac20d8 70 return NULL;
MikamiUitOpen 16:cbb726ac20d8 71 }
MikamiUitOpen 16:cbb726ac20d8 72
MikamiUitOpen 16:cbb726ac20d8 73 const char* FileBase::getName(void) {
MikamiUitOpen 16:cbb726ac20d8 74 return _name;
MikamiUitOpen 16:cbb726ac20d8 75 }
MikamiUitOpen 16:cbb726ac20d8 76
MikamiUitOpen 16:cbb726ac20d8 77 PathType FileBase::getPathType(void) {
MikamiUitOpen 16:cbb726ac20d8 78 return _path_type;
MikamiUitOpen 16:cbb726ac20d8 79 }
MikamiUitOpen 16:cbb726ac20d8 80
MikamiUitOpen 16:cbb726ac20d8 81 } // namespace mbed
MikamiUitOpen 16:cbb726ac20d8 82