![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
Output the audio signal (*.bin) with filtering by IIR filter in the SD card using onboard CODEC. For *.wav file, F746_SD_WavPlayer and F746_SD_GraphicEqualiser are published on mbed. SD カードのオーディオ信号 (*.bin) を遮断周波数可変の IIR 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.*.wav 形式のファイル用には,F746_SD_WavPlayer と F746_SD_GraphicEqualiser を mbed で公開している.
Dependencies: BSP_DISCO_F746NG_patch_fixed F746_GUI LCD_DISCO_F746NG SDFileSystem_Warning_Fixed TS_DISCO_F746NG mbed
Diff: MyClasses_Functions/FileSelector.hpp
- Revision:
- 4:76aa20fb326a
- Child:
- 5:4a99dabc9180
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MyClasses_Functions/FileSelector.hpp Sat Apr 16 13:53:53 2016 +0000 @@ -0,0 +1,158 @@ +//-------------------------------------------------------------- +// FileSelector class +// SD カード内のファイル名の一覧を表示し,ファイルを選択する +// +// 2016/04/10, Copyright (c) 2016 MIKAMI, Naoki +//-------------------------------------------------------------- + +#ifndef FILE_SELECTOR_HPP +#define FILE_SELECTOR_HPP + +#include "mbed.h" +#include "Label.hpp" +#include "ButtonGroup.hpp" +#include "SD_BinaryReader.hpp" +#include "SDFileSystem.h" +#include <algorithm> // sort() で使用 +#include <string> + +namespace Mikami +{ + class FileSelector + { + public: + FileSelector(uint8_t x0, uint8_t y0, int maxFiles, + int maxNameLength, SD_BinaryReader &reader) + : X_(x0), Y_(y0), W_H_(24), V_L_(36), + MAX_FILES_(maxFiles), MAX_NAME_LENGTH_(maxNameLength), + BASE_COLOR_(0xFF80FFA0), TOUCHED_COLOR_(0xFF80FFFF), + fileNames_(new string[maxFiles]), + sortedFileNames_(new string[maxFiles]), + lcd_(GuiBase::GetLcdPtr()), + sdReader_(reader), prev_(-1) {} + + bool CreateTable() + { + DIR* dp = opendir("/sd"); + fileCount_ = 0; + if (dp != NULL) + { + dirent* entry; + for (int n=0; n<256; n++) + { + entry = readdir(dp); + if (entry == NULL) break; + + string strName = entry->d_name; + if ( (strName.find(".bin") != string::npos) || + (strName.find(".BIN") != string::npos) ) + { + sdReader_.Open(strName); // ファイルオープン + // 小さすぎるファイルは除外 + if ((sdReader_.ReadSize()) > 4096) + { + fileNames_[fileCount_] = strName; + fileCount_++; + } + sdReader_.Close(); + } + if (fileCount_ >= MAX_FILES_) break; + } + closedir(dp); + } + else + return false; + + if (fileCount_ == 0) return false; + + nonString_ = new string[fileCount_]; + for (int n=0; n<fileCount_; n++) nonString_[n] = ""; + rect_ = new ButtonGroup(X_, Y_, W_H_, W_H_, fileCount_, + nonString_, 0, V_L_-W_H_, 1, + -1, Font12, 0, GuiBase::ENUM_BACK, + BASE_COLOR_, TOUCHED_COLOR_); + for (int n=0; n<fileCount_; n++) rect_->Erase(n); + CreateLabels(); + + return true; + } + + // ファイルを選択する + bool Select(string &fileName) + { + int n; + if (rect_->GetTouchedNumber(n)) + { + fileNameLabels_[n]->Draw(GetFileNameNoExt(n), TOUCHED_COLOR_); + if ((prev_ >= 0) && (prev_ != n)) + fileNameLabels_[prev_]->Draw(GetFileNameNoExt(prev_)); + prev_ = n; + fileName = sortedFileNames_[n]; + return true; + } + else + return false; + } + + // ファイルの一覧の表示 + void DisplayFileList(bool sort = true) + { + for (int n=0; n<fileCount_; n++) + sortedFileNames_[n] = fileNames_[n]; + if (sort) + std::sort(sortedFileNames_, sortedFileNames_+fileCount_); + + Erase(MAX_NAME_LENGTH_*((sFONT *)(&Font16))->Width, 270-Y_); + rect_->DrawAll(); + for (int n=0; n<fileCount_; n++) + fileNameLabels_[n]->Draw(GetFileNameNoExt(n)); + } + + void Erase(uint16_t width, uint16_t height, + uint32_t color = GuiBase::ENUM_BACK) + { + lcd_->SetTextColor(color); + lcd_->FillRect(X_, Y_, width, height); + } + + private: + const uint8_t X_, Y_, W_H_, V_L_; + const int MAX_FILES_; + const int MAX_NAME_LENGTH_; + const uint32_t BASE_COLOR_; + const uint32_t TOUCHED_COLOR_; + + string *fileNames_; + string *sortedFileNames_; + string *nonString_; + ButtonGroup *rect_; + Label **fileNameLabels_; + LCD_DISCO_F746NG *lcd_; + SD_BinaryReader &sdReader_; + int fileCount_; + int prev_; + + // Label を生成 + void CreateLabels() + { + fileNameLabels_ = new Label *[fileCount_+1]; + for (int n=0; n<fileCount_; n++) + fileNameLabels_[n] = new Label(X_+30, Y_+5+V_L_*n, "", + Label::LEFT, Font16, + BASE_COLOR_); + } + + // 拡張子を削除した文字列を取得 + string GetFileNameNoExt(int n) + { + string name = sortedFileNames_[n]; + name.erase(name.find(".")); + return name.substr(0, MAX_NAME_LENGTH_); + } + + // disallow copy constructor and assignment operator + FileSelector(const FileSelector&); + FileSelector& operator=(const FileSelector&); + }; +} +#endif // FILE_SELECTOR_HPP