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/Stream.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_STREAM_H
MikamiUitOpen 2:dcaee06f6ccb 17 #define MBED_STREAM_H
MikamiUitOpen 2:dcaee06f6ccb 18
MikamiUitOpen 2:dcaee06f6ccb 19 #include "platform.h"
MikamiUitOpen 2:dcaee06f6ccb 20 #include "FileLike.h"
MikamiUitOpen 2:dcaee06f6ccb 21 #include <cstdarg>
MikamiUitOpen 2:dcaee06f6ccb 22
MikamiUitOpen 2:dcaee06f6ccb 23 namespace mbed {
MikamiUitOpen 2:dcaee06f6ccb 24
MikamiUitOpen 2:dcaee06f6ccb 25 extern void mbed_set_unbuffered_stream(FILE *_file);
MikamiUitOpen 2:dcaee06f6ccb 26 extern int mbed_getc(FILE *_file);
MikamiUitOpen 2:dcaee06f6ccb 27 extern char* mbed_gets(char *s, int size, FILE *_file);
MikamiUitOpen 2:dcaee06f6ccb 28
MikamiUitOpen 2:dcaee06f6ccb 29 class Stream : public FileLike {
MikamiUitOpen 2:dcaee06f6ccb 30
MikamiUitOpen 2:dcaee06f6ccb 31 public:
MikamiUitOpen 2:dcaee06f6ccb 32 Stream(const char *name=NULL);
MikamiUitOpen 2:dcaee06f6ccb 33 virtual ~Stream();
MikamiUitOpen 2:dcaee06f6ccb 34
MikamiUitOpen 2:dcaee06f6ccb 35 int putc(int c);
MikamiUitOpen 2:dcaee06f6ccb 36 int puts(const char *s);
MikamiUitOpen 2:dcaee06f6ccb 37 int getc();
MikamiUitOpen 2:dcaee06f6ccb 38 char *gets(char *s, int size);
MikamiUitOpen 2:dcaee06f6ccb 39 int printf(const char* format, ...);
MikamiUitOpen 2:dcaee06f6ccb 40 int scanf(const char* format, ...);
MikamiUitOpen 2:dcaee06f6ccb 41 int vprintf(const char* format, std::va_list args);
MikamiUitOpen 2:dcaee06f6ccb 42 int vscanf(const char* format, std::va_list args);
MikamiUitOpen 2:dcaee06f6ccb 43
MikamiUitOpen 2:dcaee06f6ccb 44 operator std::FILE*() {return _file;}
MikamiUitOpen 2:dcaee06f6ccb 45
MikamiUitOpen 2:dcaee06f6ccb 46 protected:
MikamiUitOpen 2:dcaee06f6ccb 47 virtual int close();
MikamiUitOpen 2:dcaee06f6ccb 48 virtual ssize_t write(const void* buffer, size_t length);
MikamiUitOpen 2:dcaee06f6ccb 49 virtual ssize_t read(void* buffer, size_t length);
MikamiUitOpen 2:dcaee06f6ccb 50 virtual off_t lseek(off_t offset, int whence);
MikamiUitOpen 2:dcaee06f6ccb 51 virtual int isatty();
MikamiUitOpen 2:dcaee06f6ccb 52 virtual int fsync();
MikamiUitOpen 2:dcaee06f6ccb 53 virtual off_t flen();
MikamiUitOpen 2:dcaee06f6ccb 54
MikamiUitOpen 2:dcaee06f6ccb 55 virtual int _putc(int c) = 0;
MikamiUitOpen 2:dcaee06f6ccb 56 virtual int _getc() = 0;
MikamiUitOpen 2:dcaee06f6ccb 57
MikamiUitOpen 2:dcaee06f6ccb 58 std::FILE *_file;
MikamiUitOpen 2:dcaee06f6ccb 59
MikamiUitOpen 2:dcaee06f6ccb 60 /* disallow copy constructor and assignment operators */
MikamiUitOpen 2:dcaee06f6ccb 61 private:
MikamiUitOpen 2:dcaee06f6ccb 62 Stream(const Stream&);
MikamiUitOpen 2:dcaee06f6ccb 63 Stream & operator = (const Stream&);
MikamiUitOpen 2:dcaee06f6ccb 64 };
MikamiUitOpen 2:dcaee06f6ccb 65
MikamiUitOpen 2:dcaee06f6ccb 66 } // namespace mbed
MikamiUitOpen 2:dcaee06f6ccb 67
MikamiUitOpen 2:dcaee06f6ccb 68 #endif