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/FilePath.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 "FilePath.h"
MikamiUitOpen 16:cbb726ac20d8 17
MikamiUitOpen 16:cbb726ac20d8 18 namespace mbed {
MikamiUitOpen 16:cbb726ac20d8 19
MikamiUitOpen 16:cbb726ac20d8 20 FilePath::FilePath(const char* file_path) : file_name(NULL), fb(NULL) {
MikamiUitOpen 16:cbb726ac20d8 21 if ((file_path[0] != '/') || (file_path[1] == 0)) return;
MikamiUitOpen 16:cbb726ac20d8 22
MikamiUitOpen 16:cbb726ac20d8 23 const char* file_system = &file_path[1];
MikamiUitOpen 16:cbb726ac20d8 24 file_name = file_system;
MikamiUitOpen 16:cbb726ac20d8 25 int len = 0;
MikamiUitOpen 16:cbb726ac20d8 26 while (true) {
MikamiUitOpen 16:cbb726ac20d8 27 char c = *file_name;
MikamiUitOpen 16:cbb726ac20d8 28 if (c == '/') { // end of object name
MikamiUitOpen 16:cbb726ac20d8 29 file_name++; // point to one char after the '/'
MikamiUitOpen 16:cbb726ac20d8 30 break;
MikamiUitOpen 16:cbb726ac20d8 31 }
MikamiUitOpen 16:cbb726ac20d8 32 if (c == 0) { // end of object name, with no filename
MikamiUitOpen 16:cbb726ac20d8 33 break;
MikamiUitOpen 16:cbb726ac20d8 34 }
MikamiUitOpen 16:cbb726ac20d8 35 len++;
MikamiUitOpen 16:cbb726ac20d8 36 file_name++;
MikamiUitOpen 16:cbb726ac20d8 37 }
MikamiUitOpen 16:cbb726ac20d8 38
MikamiUitOpen 16:cbb726ac20d8 39 fb = FileBase::lookup(file_system, len);
MikamiUitOpen 16:cbb726ac20d8 40 }
MikamiUitOpen 16:cbb726ac20d8 41
MikamiUitOpen 16:cbb726ac20d8 42 const char* FilePath::fileName(void) {
MikamiUitOpen 16:cbb726ac20d8 43 return file_name;
MikamiUitOpen 16:cbb726ac20d8 44 }
MikamiUitOpen 16:cbb726ac20d8 45
MikamiUitOpen 16:cbb726ac20d8 46 bool FilePath::isFileSystem(void) {
MikamiUitOpen 16:cbb726ac20d8 47 if (NULL == fb)
MikamiUitOpen 16:cbb726ac20d8 48 return false;
MikamiUitOpen 16:cbb726ac20d8 49 return (fb->getPathType() == FileSystemPathType);
MikamiUitOpen 16:cbb726ac20d8 50 }
MikamiUitOpen 16:cbb726ac20d8 51
MikamiUitOpen 16:cbb726ac20d8 52 FileSystemLike* FilePath::fileSystem(void) {
MikamiUitOpen 16:cbb726ac20d8 53 if (isFileSystem()) {
MikamiUitOpen 16:cbb726ac20d8 54 return (FileSystemLike*)fb;
MikamiUitOpen 16:cbb726ac20d8 55 }
MikamiUitOpen 16:cbb726ac20d8 56 return NULL;
MikamiUitOpen 16:cbb726ac20d8 57 }
MikamiUitOpen 16:cbb726ac20d8 58
MikamiUitOpen 16:cbb726ac20d8 59 bool FilePath::isFile(void) {
MikamiUitOpen 16:cbb726ac20d8 60 if (NULL == fb)
MikamiUitOpen 16:cbb726ac20d8 61 return false;
MikamiUitOpen 16:cbb726ac20d8 62 return (fb->getPathType() == FilePathType);
MikamiUitOpen 16:cbb726ac20d8 63 }
MikamiUitOpen 16:cbb726ac20d8 64
MikamiUitOpen 16:cbb726ac20d8 65 FileLike* FilePath::file(void) {
MikamiUitOpen 16:cbb726ac20d8 66 if (isFile()) {
MikamiUitOpen 16:cbb726ac20d8 67 return (FileLike*)fb;
MikamiUitOpen 16:cbb726ac20d8 68 }
MikamiUitOpen 16:cbb726ac20d8 69 return NULL;
MikamiUitOpen 16:cbb726ac20d8 70 }
MikamiUitOpen 16:cbb726ac20d8 71
MikamiUitOpen 16:cbb726ac20d8 72 bool FilePath::exists(void) {
MikamiUitOpen 16:cbb726ac20d8 73 return fb != NULL;
MikamiUitOpen 16:cbb726ac20d8 74 }
MikamiUitOpen 16:cbb726ac20d8 75
MikamiUitOpen 16:cbb726ac20d8 76 } // namespace mbed