不韋 呂 / F746_MySoundMachine

Integrated program of 4 different kinds of application programs for processing sound signal. 4種類のサウンド信号処理を統合したプログラム．

Dependencies:   F746_GUI F746_SAI_IO FrequencyResponseDrawer SD_PlayerSkeleton UIT_FFT_Real

mbed_src_STM32F7/common/FileSystemLike.cpp@2:fcba17e3d573, 2016-09-26 (annotated)

Committer:
MikamiUitOpen
Date:
Mon Sep 26 07:07:05 2016 +0000
Revision:
2:fcba17e3d573
Parent:
mbed_src_STM/common/FileSystemLike.cpp@0:224dccbc4edd 
3

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:224dccbc4edd 1 /* mbed Microcontroller Library
MikamiUitOpen 0:224dccbc4edd 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 0:224dccbc4edd 3 *
MikamiUitOpen 0:224dccbc4edd 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 0:224dccbc4edd 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 0:224dccbc4edd 6 * You may obtain a copy of the License at
MikamiUitOpen 0:224dccbc4edd 7 *
MikamiUitOpen 0:224dccbc4edd 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 0:224dccbc4edd 9 *
MikamiUitOpen 0:224dccbc4edd 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 0:224dccbc4edd 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 0:224dccbc4edd 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 0:224dccbc4edd 13 * See the License for the specific language governing permissions and
MikamiUitOpen 0:224dccbc4edd 14 * limitations under the License.
MikamiUitOpen 0:224dccbc4edd 15 */
MikamiUitOpen 0:224dccbc4edd 16 #include "FileSystemLike.h"
MikamiUitOpen 0:224dccbc4edd 17
MikamiUitOpen 0:224dccbc4edd 18 namespace mbed {
MikamiUitOpen 0:224dccbc4edd 19
MikamiUitOpen 0:224dccbc4edd 20 class BaseDirHandle : public DirHandle {
MikamiUitOpen 0:224dccbc4edd 21 public:
MikamiUitOpen 0:224dccbc4edd 22 /*
MikamiUitOpen 0:224dccbc4edd 23 We keep track of our current location as the n'th object in the
MikamiUitOpen 0:224dccbc4edd 24 FileSystemLike list. Using a Base* instead would cause problems if that
MikamiUitOpen 0:224dccbc4edd 25 object were to be destroyed between readdirs.
MikamiUitOpen 0:224dccbc4edd 26 Using this method does mean though that destroying/creating objects can
MikamiUitOpen 0:224dccbc4edd 27 give unusual results from readdir.
MikamiUitOpen 0:224dccbc4edd 28 */
MikamiUitOpen 0:224dccbc4edd 29 off_t n;
MikamiUitOpen 0:224dccbc4edd 30 struct dirent cur_entry;
MikamiUitOpen 0:224dccbc4edd 31
MikamiUitOpen 0:224dccbc4edd 32 BaseDirHandle() : n(0), cur_entry() {
MikamiUitOpen 0:224dccbc4edd 33 }
MikamiUitOpen 0:224dccbc4edd 34
MikamiUitOpen 0:224dccbc4edd 35 virtual int closedir() {
MikamiUitOpen 0:224dccbc4edd 36 delete this;
MikamiUitOpen 0:224dccbc4edd 37 return 0;
MikamiUitOpen 0:224dccbc4edd 38 }
MikamiUitOpen 0:224dccbc4edd 39
MikamiUitOpen 0:224dccbc4edd 40 virtual struct dirent *readdir() {
MikamiUitOpen 0:224dccbc4edd 41 FileBase *ptr = FileBase::get(n);
MikamiUitOpen 0:224dccbc4edd 42 if (ptr == NULL) return NULL;
MikamiUitOpen 0:224dccbc4edd 43
MikamiUitOpen 0:224dccbc4edd 44 /* Increment n, so next readdir gets the next item */
MikamiUitOpen 0:224dccbc4edd 45 n++;
MikamiUitOpen 0:224dccbc4edd 46
MikamiUitOpen 0:224dccbc4edd 47 /* Setup cur entry and return a pointer to it */
MikamiUitOpen 0:224dccbc4edd 48 std::strncpy(cur_entry.d_name, ptr->getName(), NAME_MAX);
MikamiUitOpen 0:224dccbc4edd 49 return &cur_entry;
MikamiUitOpen 0:224dccbc4edd 50 }
MikamiUitOpen 0:224dccbc4edd 51
MikamiUitOpen 0:224dccbc4edd 52 virtual off_t telldir() {
MikamiUitOpen 0:224dccbc4edd 53 return n;
MikamiUitOpen 0:224dccbc4edd 54 }
MikamiUitOpen 0:224dccbc4edd 55
MikamiUitOpen 0:224dccbc4edd 56 virtual void seekdir(off_t offset) {
MikamiUitOpen 0:224dccbc4edd 57 n = offset;
MikamiUitOpen 0:224dccbc4edd 58 }
MikamiUitOpen 0:224dccbc4edd 59
MikamiUitOpen 0:224dccbc4edd 60 virtual void rewinddir() {
MikamiUitOpen 0:224dccbc4edd 61 n = 0;
MikamiUitOpen 0:224dccbc4edd 62 }
MikamiUitOpen 0:224dccbc4edd 63 };
MikamiUitOpen 0:224dccbc4edd 64
MikamiUitOpen 0:224dccbc4edd 65 FileSystemLike::FileSystemLike(const char *name) : FileBase(name, FileSystemPathType) {
MikamiUitOpen 0:224dccbc4edd 66
MikamiUitOpen 0:224dccbc4edd 67 }
MikamiUitOpen 0:224dccbc4edd 68
MikamiUitOpen 0:224dccbc4edd 69 FileSystemLike::~FileSystemLike() {
MikamiUitOpen 0:224dccbc4edd 70
MikamiUitOpen 0:224dccbc4edd 71 }
MikamiUitOpen 0:224dccbc4edd 72
MikamiUitOpen 0:224dccbc4edd 73 DirHandle *FileSystemLike::opendir() {
MikamiUitOpen 0:224dccbc4edd 74 return new BaseDirHandle();
MikamiUitOpen 0:224dccbc4edd 75 }
MikamiUitOpen 0:224dccbc4edd 76
MikamiUitOpen 0:224dccbc4edd 77 } // namespace mbed