不韋 呂 / F746_SD_BitmapViewer

microSD カードのビットマップ･ファイルのビュアー．画像の最大値　縦：272ピクセル，横：480ピクセル． Bitmap file viewer for microSD card. Maximum size Vertical: 272 pixels, Horizontal: 480.

Dependencies:   SDFileSystem_Warning_Fixed F746_GUI

mbed_src_STM32F7/common/LocalFileSystem.cpp@0:f62ffd3644bf, 2018-10-21 (annotated)

Committer:
MikamiUitOpen
Date:
Sun Oct 21 11:29:47 2018 +0000
Revision:
0:f62ffd3644bf
1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:f62ffd3644bf 1 /* mbed Microcontroller Library
MikamiUitOpen 0:f62ffd3644bf 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 0:f62ffd3644bf 3 *
MikamiUitOpen 0:f62ffd3644bf 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 0:f62ffd3644bf 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 0:f62ffd3644bf 6 * You may obtain a copy of the License at
MikamiUitOpen 0:f62ffd3644bf 7 *
MikamiUitOpen 0:f62ffd3644bf 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 0:f62ffd3644bf 9 *
MikamiUitOpen 0:f62ffd3644bf 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 0:f62ffd3644bf 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 0:f62ffd3644bf 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 0:f62ffd3644bf 13 * See the License for the specific language governing permissions and
MikamiUitOpen 0:f62ffd3644bf 14 * limitations under the License.
MikamiUitOpen 0:f62ffd3644bf 15 */
MikamiUitOpen 0:f62ffd3644bf 16 #include "LocalFileSystem.h"
MikamiUitOpen 0:f62ffd3644bf 17
MikamiUitOpen 0:f62ffd3644bf 18 #if DEVICE_LOCALFILESYSTEM
MikamiUitOpen 0:f62ffd3644bf 19
MikamiUitOpen 0:f62ffd3644bf 20 #include "semihost_api.h"
MikamiUitOpen 0:f62ffd3644bf 21 #include <string.h>
MikamiUitOpen 0:f62ffd3644bf 22 #include <stdio.h>
MikamiUitOpen 0:f62ffd3644bf 23
MikamiUitOpen 0:f62ffd3644bf 24 namespace mbed {
MikamiUitOpen 0:f62ffd3644bf 25
MikamiUitOpen 0:f62ffd3644bf 26 /* Extension to FINFO type defined in RTL.h (in Keil RL) - adds 'create time'. */
MikamiUitOpen 0:f62ffd3644bf 27 typedef struct {
MikamiUitOpen 0:f62ffd3644bf 28 unsigned char hr; /* Hours [0..23] */
MikamiUitOpen 0:f62ffd3644bf 29 unsigned char min; /* Minutes [0..59] */
MikamiUitOpen 0:f62ffd3644bf 30 unsigned char sec; /* Seconds [0..59] */
MikamiUitOpen 0:f62ffd3644bf 31 unsigned char day; /* Day [1..31] */
MikamiUitOpen 0:f62ffd3644bf 32 unsigned char mon; /* Month [1..12] */
MikamiUitOpen 0:f62ffd3644bf 33 unsigned short year; /* Year [1980..2107] */
MikamiUitOpen 0:f62ffd3644bf 34 } FTIME;
MikamiUitOpen 0:f62ffd3644bf 35
MikamiUitOpen 0:f62ffd3644bf 36 typedef struct { /* File Search info record */
MikamiUitOpen 0:f62ffd3644bf 37 char name[32]; /* File name */
MikamiUitOpen 0:f62ffd3644bf 38 long size; /* File size in bytes */
MikamiUitOpen 0:f62ffd3644bf 39 int fileID; /* System File Identification */
MikamiUitOpen 0:f62ffd3644bf 40 FTIME create_time; /* Date & time file was created */
MikamiUitOpen 0:f62ffd3644bf 41 FTIME write_time; /* Date & time of last write */
MikamiUitOpen 0:f62ffd3644bf 42 } XFINFO;
MikamiUitOpen 0:f62ffd3644bf 43
MikamiUitOpen 0:f62ffd3644bf 44 #define RESERVED_FOR_USER_APPLICATIONS (0x100) /* 0x100 - 0x1ff */
MikamiUitOpen 0:f62ffd3644bf 45 #define USR_XFFIND (RESERVED_FOR_USER_APPLICATIONS + 0)
MikamiUitOpen 0:f62ffd3644bf 46
MikamiUitOpen 0:f62ffd3644bf 47 static int xffind (const char *pattern, XFINFO *info) {
MikamiUitOpen 0:f62ffd3644bf 48 unsigned param[4];
MikamiUitOpen 0:f62ffd3644bf 49
MikamiUitOpen 0:f62ffd3644bf 50 param[0] = (unsigned long)pattern;
MikamiUitOpen 0:f62ffd3644bf 51 param[1] = (unsigned long)strlen(pattern);
MikamiUitOpen 0:f62ffd3644bf 52 param[2] = (unsigned long)info;
MikamiUitOpen 0:f62ffd3644bf 53 param[3] = (unsigned long)sizeof(XFINFO);
MikamiUitOpen 0:f62ffd3644bf 54
MikamiUitOpen 0:f62ffd3644bf 55 return __semihost(USR_XFFIND, param);
MikamiUitOpen 0:f62ffd3644bf 56 }
MikamiUitOpen 0:f62ffd3644bf 57
MikamiUitOpen 0:f62ffd3644bf 58 #define OPEN_R 0
MikamiUitOpen 0:f62ffd3644bf 59 #define OPEN_B 1
MikamiUitOpen 0:f62ffd3644bf 60 #define OPEN_PLUS 2
MikamiUitOpen 0:f62ffd3644bf 61 #define OPEN_W 4
MikamiUitOpen 0:f62ffd3644bf 62 #define OPEN_A 8
MikamiUitOpen 0:f62ffd3644bf 63 #define OPEN_INVALID -1
MikamiUitOpen 0:f62ffd3644bf 64
MikamiUitOpen 0:f62ffd3644bf 65 int posix_to_semihost_open_flags(int flags) {
MikamiUitOpen 0:f62ffd3644bf 66 /* POSIX flags -> semihosting open mode */
MikamiUitOpen 0:f62ffd3644bf 67 int openmode;
MikamiUitOpen 0:f62ffd3644bf 68 if (flags & O_RDWR) {
MikamiUitOpen 0:f62ffd3644bf 69 /* a plus mode */
MikamiUitOpen 0:f62ffd3644bf 70 openmode = OPEN_PLUS;
MikamiUitOpen 0:f62ffd3644bf 71 if (flags & O_APPEND) {
MikamiUitOpen 0:f62ffd3644bf 72 openmode |= OPEN_A;
MikamiUitOpen 0:f62ffd3644bf 73 } else if (flags & O_TRUNC) {
MikamiUitOpen 0:f62ffd3644bf 74 openmode |= OPEN_W;
MikamiUitOpen 0:f62ffd3644bf 75 } else {
MikamiUitOpen 0:f62ffd3644bf 76 openmode |= OPEN_R;
MikamiUitOpen 0:f62ffd3644bf 77 }
MikamiUitOpen 0:f62ffd3644bf 78 } else if (flags & O_WRONLY) {
MikamiUitOpen 0:f62ffd3644bf 79 /* write or append */
MikamiUitOpen 0:f62ffd3644bf 80 if (flags & O_APPEND) {
MikamiUitOpen 0:f62ffd3644bf 81 openmode = OPEN_A;
MikamiUitOpen 0:f62ffd3644bf 82 } else {
MikamiUitOpen 0:f62ffd3644bf 83 openmode = OPEN_W;
MikamiUitOpen 0:f62ffd3644bf 84 }
MikamiUitOpen 0:f62ffd3644bf 85 } else if (flags == O_RDONLY) {
MikamiUitOpen 0:f62ffd3644bf 86 /* read mode */
MikamiUitOpen 0:f62ffd3644bf 87 openmode = OPEN_R;
MikamiUitOpen 0:f62ffd3644bf 88 } else {
MikamiUitOpen 0:f62ffd3644bf 89 /* invalid flags */
MikamiUitOpen 0:f62ffd3644bf 90 openmode = OPEN_INVALID;
MikamiUitOpen 0:f62ffd3644bf 91 }
MikamiUitOpen 0:f62ffd3644bf 92
MikamiUitOpen 0:f62ffd3644bf 93 return openmode;
MikamiUitOpen 0:f62ffd3644bf 94 }
MikamiUitOpen 0:f62ffd3644bf 95
MikamiUitOpen 0:f62ffd3644bf 96 FILEHANDLE local_file_open(const char* name, int flags) {
MikamiUitOpen 0:f62ffd3644bf 97 int openmode = posix_to_semihost_open_flags(flags);
MikamiUitOpen 0:f62ffd3644bf 98 if (openmode == OPEN_INVALID) {
MikamiUitOpen 0:f62ffd3644bf 99 return (FILEHANDLE)NULL;
MikamiUitOpen 0:f62ffd3644bf 100 }
MikamiUitOpen 0:f62ffd3644bf 101
MikamiUitOpen 0:f62ffd3644bf 102 FILEHANDLE fh = semihost_open(name, openmode);
MikamiUitOpen 0:f62ffd3644bf 103 if (fh == -1) {
MikamiUitOpen 0:f62ffd3644bf 104 return (FILEHANDLE)NULL;
MikamiUitOpen 0:f62ffd3644bf 105 }
MikamiUitOpen 0:f62ffd3644bf 106
MikamiUitOpen 0:f62ffd3644bf 107 return fh;
MikamiUitOpen 0:f62ffd3644bf 108 }
MikamiUitOpen 0:f62ffd3644bf 109
MikamiUitOpen 0:f62ffd3644bf 110 LocalFileHandle::LocalFileHandle(FILEHANDLE fh) : _fh(fh), pos(0) {
MikamiUitOpen 0:f62ffd3644bf 111 }
MikamiUitOpen 0:f62ffd3644bf 112
MikamiUitOpen 0:f62ffd3644bf 113 int LocalFileHandle::close() {
MikamiUitOpen 0:f62ffd3644bf 114 int retval = semihost_close(_fh);
MikamiUitOpen 0:f62ffd3644bf 115 delete this;
MikamiUitOpen 0:f62ffd3644bf 116 return retval;
MikamiUitOpen 0:f62ffd3644bf 117 }
MikamiUitOpen 0:f62ffd3644bf 118
MikamiUitOpen 0:f62ffd3644bf 119 ssize_t LocalFileHandle::write(const void *buffer, size_t length) {
MikamiUitOpen 0:f62ffd3644bf 120 ssize_t n = semihost_write(_fh, (const unsigned char*)buffer, length, 0); // number of characters not written
MikamiUitOpen 0:f62ffd3644bf 121 n = length - n; // number of characters written
MikamiUitOpen 0:f62ffd3644bf 122 pos += n;
MikamiUitOpen 0:f62ffd3644bf 123 return n;
MikamiUitOpen 0:f62ffd3644bf 124 }
MikamiUitOpen 0:f62ffd3644bf 125
MikamiUitOpen 0:f62ffd3644bf 126 ssize_t LocalFileHandle::read(void *buffer, size_t length) {
MikamiUitOpen 0:f62ffd3644bf 127 ssize_t n = semihost_read(_fh, (unsigned char*)buffer, length, 0); // number of characters not read
MikamiUitOpen 0:f62ffd3644bf 128 n = length - n; // number of characters read
MikamiUitOpen 0:f62ffd3644bf 129 pos += n;
MikamiUitOpen 0:f62ffd3644bf 130 return n;
MikamiUitOpen 0:f62ffd3644bf 131 }
MikamiUitOpen 0:f62ffd3644bf 132
MikamiUitOpen 0:f62ffd3644bf 133 int LocalFileHandle::isatty() {
MikamiUitOpen 0:f62ffd3644bf 134 return semihost_istty(_fh);
MikamiUitOpen 0:f62ffd3644bf 135 }
MikamiUitOpen 0:f62ffd3644bf 136
MikamiUitOpen 0:f62ffd3644bf 137 off_t LocalFileHandle::lseek(off_t position, int whence) {
MikamiUitOpen 0:f62ffd3644bf 138 if (whence == SEEK_CUR) {
MikamiUitOpen 0:f62ffd3644bf 139 position += pos;
MikamiUitOpen 0:f62ffd3644bf 140 } else if (whence == SEEK_END) {
MikamiUitOpen 0:f62ffd3644bf 141 position += semihost_flen(_fh);
MikamiUitOpen 0:f62ffd3644bf 142 } /* otherwise SEEK_SET, so position is fine */
MikamiUitOpen 0:f62ffd3644bf 143
MikamiUitOpen 0:f62ffd3644bf 144 /* Always seems to return -1, so just ignore for now. */
MikamiUitOpen 0:f62ffd3644bf 145 semihost_seek(_fh, position);
MikamiUitOpen 0:f62ffd3644bf 146 pos = position;
MikamiUitOpen 0:f62ffd3644bf 147 return position;
MikamiUitOpen 0:f62ffd3644bf 148 }
MikamiUitOpen 0:f62ffd3644bf 149
MikamiUitOpen 0:f62ffd3644bf 150 int LocalFileHandle::fsync() {
MikamiUitOpen 0:f62ffd3644bf 151 return semihost_ensure(_fh);
MikamiUitOpen 0:f62ffd3644bf 152 }
MikamiUitOpen 0:f62ffd3644bf 153
MikamiUitOpen 0:f62ffd3644bf 154 off_t LocalFileHandle::flen() {
MikamiUitOpen 0:f62ffd3644bf 155 return semihost_flen(_fh);
MikamiUitOpen 0:f62ffd3644bf 156 }
MikamiUitOpen 0:f62ffd3644bf 157
MikamiUitOpen 0:f62ffd3644bf 158 class LocalDirHandle : public DirHandle {
MikamiUitOpen 0:f62ffd3644bf 159
MikamiUitOpen 0:f62ffd3644bf 160 public:
MikamiUitOpen 0:f62ffd3644bf 161 struct dirent cur_entry;
MikamiUitOpen 0:f62ffd3644bf 162 XFINFO info;
MikamiUitOpen 0:f62ffd3644bf 163
MikamiUitOpen 0:f62ffd3644bf 164 LocalDirHandle() : cur_entry(), info() {
MikamiUitOpen 0:f62ffd3644bf 165 }
MikamiUitOpen 0:f62ffd3644bf 166
MikamiUitOpen 0:f62ffd3644bf 167 virtual int closedir() {
MikamiUitOpen 0:f62ffd3644bf 168 delete this;
MikamiUitOpen 0:f62ffd3644bf 169 return 0;
MikamiUitOpen 0:f62ffd3644bf 170 }
MikamiUitOpen 0:f62ffd3644bf 171
MikamiUitOpen 0:f62ffd3644bf 172 virtual struct dirent *readdir() {
MikamiUitOpen 0:f62ffd3644bf 173 if (xffind("*", &info)!=0) {
MikamiUitOpen 0:f62ffd3644bf 174 return NULL;
MikamiUitOpen 0:f62ffd3644bf 175 }
MikamiUitOpen 0:f62ffd3644bf 176 memcpy(cur_entry.d_name, info.name, sizeof(info.name));
MikamiUitOpen 0:f62ffd3644bf 177 return &cur_entry;
MikamiUitOpen 0:f62ffd3644bf 178 }
MikamiUitOpen 0:f62ffd3644bf 179
MikamiUitOpen 0:f62ffd3644bf 180 virtual void rewinddir() {
MikamiUitOpen 0:f62ffd3644bf 181 info.fileID = 0;
MikamiUitOpen 0:f62ffd3644bf 182 }
MikamiUitOpen 0:f62ffd3644bf 183
MikamiUitOpen 0:f62ffd3644bf 184 virtual off_t telldir() {
MikamiUitOpen 0:f62ffd3644bf 185 return info.fileID;
MikamiUitOpen 0:f62ffd3644bf 186 }
MikamiUitOpen 0:f62ffd3644bf 187
MikamiUitOpen 0:f62ffd3644bf 188 virtual void seekdir(off_t offset) {
MikamiUitOpen 0:f62ffd3644bf 189 info.fileID = offset;
MikamiUitOpen 0:f62ffd3644bf 190 }
MikamiUitOpen 0:f62ffd3644bf 191 };
MikamiUitOpen 0:f62ffd3644bf 192
MikamiUitOpen 0:f62ffd3644bf 193 FileHandle *LocalFileSystem::open(const char* name, int flags) {
MikamiUitOpen 0:f62ffd3644bf 194 /* reject filenames with / in them */
MikamiUitOpen 0:f62ffd3644bf 195 for (const char *tmp = name; *tmp; tmp++) {
MikamiUitOpen 0:f62ffd3644bf 196 if (*tmp == '/') {
MikamiUitOpen 0:f62ffd3644bf 197 return NULL;
MikamiUitOpen 0:f62ffd3644bf 198 }
MikamiUitOpen 0:f62ffd3644bf 199 }
MikamiUitOpen 0:f62ffd3644bf 200
MikamiUitOpen 0:f62ffd3644bf 201 int openmode = posix_to_semihost_open_flags(flags);
MikamiUitOpen 0:f62ffd3644bf 202 if (openmode == OPEN_INVALID) {
MikamiUitOpen 0:f62ffd3644bf 203 return NULL;
MikamiUitOpen 0:f62ffd3644bf 204 }
MikamiUitOpen 0:f62ffd3644bf 205
MikamiUitOpen 0:f62ffd3644bf 206 FILEHANDLE fh = semihost_open(name, openmode);
MikamiUitOpen 0:f62ffd3644bf 207 if (fh == -1) {
MikamiUitOpen 0:f62ffd3644bf 208 return NULL;
MikamiUitOpen 0:f62ffd3644bf 209 }
MikamiUitOpen 0:f62ffd3644bf 210 return new LocalFileHandle(fh);
MikamiUitOpen 0:f62ffd3644bf 211 }
MikamiUitOpen 0:f62ffd3644bf 212
MikamiUitOpen 0:f62ffd3644bf 213 int LocalFileSystem::remove(const char *filename) {
MikamiUitOpen 0:f62ffd3644bf 214 return semihost_remove(filename);
MikamiUitOpen 0:f62ffd3644bf 215 }
MikamiUitOpen 0:f62ffd3644bf 216
MikamiUitOpen 0:f62ffd3644bf 217 DirHandle *LocalFileSystem::opendir(const char *name) {
MikamiUitOpen 0:f62ffd3644bf 218 return new LocalDirHandle();
MikamiUitOpen 0:f62ffd3644bf 219 }
MikamiUitOpen 0:f62ffd3644bf 220
MikamiUitOpen 0:f62ffd3644bf 221 } // namespace mbed
MikamiUitOpen 0:f62ffd3644bf 222
MikamiUitOpen 0:f62ffd3644bf 223 #endif