不韋 呂
Output the audio signal with filtering by IIR filter 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．
Dependencies: BSP_DISCO_F746NG F746_GUI LCD_DISCO_F746NG SDFileSystem_Warning_Fixed TS_DISCO_F746NG mbed FrequencyResponseDrawer F746_SAI_IO Array_Matrix
Diff: MyClasses_Functions/FileSelectorWav.hpp
- Revision:
- 0:04b43b777fae
- Child:
- 5:3e8ca1ed31a1
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/MyClasses_Functions/FileSelectorWav.hpp Tue Apr 19 09:46:11 2016 +0000
@@ -0,0 +1,182 @@
+//--------------------------------------------------------------
+// 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
+//
+// 2016/04/18, Copyright (c) 2016 MIKAMI, Naoki
+//--------------------------------------------------------------
+
+#ifndef FILE_SELECTOR_HPP
+#define FILE_SELECTOR_HPP
+
+#include "mbed.h"
+#include "Label.hpp"
+#include "ButtonGroup.hpp"
+#include "SD_WavReader.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_WavReader &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]),
+ nonString_(NULL), rect_(NULL), fileNameLabels_(NULL),
+ lcd_(GuiBase::GetLcdPtr()),
+ sdReader_(reader), prevFileCount_(0), prev_(-1) {}
+
+ ~FileSelector()
+ {
+ for (int n=0; n<fileCount_; n++)
+ delete fileNameLabels_[n];
+ delete[] fileNameLabels_;
+ delete rect_;
+ delete[] nonString_;
+ delete[] sortedFileNames_;
+ delete[] fileNames_;
+ }
+
+ 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(".wav") != string::npos) ||
+ (strName.find(".WAV") != string::npos) )
+ {
+ sdReader_.Open(strName); // ファイルオープン
+
+ // PCM，16 ビットステレオ，標本化周波数 44.1 kHz 以外のファイルは除外
+ if (sdReader_.IsWavFile())
+ {
+ fileNames_[fileCount_] = strName;
+ fileCount_++;
+ }
+ sdReader_.Close();
+ }
+
+
+ if (fileCount_ >= MAX_FILES_) break;
+ }
+ closedir(dp);
+ }
+ else
+ return false;
+
+ if (fileCount_ == 0) return false;
+
+ if (nonString_ == NULL) delete[] nonString_;
+ nonString_ = new string[fileCount_];
+ for (int n=0; n<fileCount_; n++) nonString_[n] = "";
+
+ if (rect_ != NULL) delete rect_;
+ 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();
+ prevFileCount_ = fileCount_;
+ 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_WavReader &sdReader_;
+ int fileCount_, prevFileCount_;
+ int prev_;
+
+ // Label を生成
+ void CreateLabels()
+ {
+ if (fileNameLabels_ != NULL)
+ {
+ for (int n=0; n<prevFileCount_; n++)
+ delete fileNameLabels_[n];
+ delete[] fileNameLabels_;
+ }
+ 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