boting ren / Mbed 2 deprecated F746_SD_GraphicEqualizer_ren0620

revised version of F746_SD_GraphicEqualizer

Dependencies:   BSP_DISCO_F746NG F746_GUI F746_SAI_IO FrequencyResponseDrawer LCD_DISCO_F746NG SDFileSystem_Warning_Fixed TS_DISCO_F746NG mbed

Fork of F746_SD_GraphicEqualizer by 不韋 呂

MyClasses_Functions/MyFunctions.cpp@0:e953eb392151, 2016-04-27 (annotated)

Committer:
MikamiUitOpen
Date:
Wed Apr 27 13:56:39 2016 +0000
Revision:
0:e953eb392151
Child:
1:a5837720e14a
1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:e953eb392151 1 //--------------------------------------------------------------
MikamiUitOpen 0:e953eb392151 2 // グラフィックイコライザ付き SD オーディオプレーヤーで使う大域関数
MikamiUitOpen 0:e953eb392151 3 //
MikamiUitOpen 0:e953eb392151 4 // 2016/04/27, Copyright (c) 2016 MIKAMI, Naoki
MikamiUitOpen 0:e953eb392151 5 //--------------------------------------------------------------
MikamiUitOpen 0:e953eb392151 6
MikamiUitOpen 0:e953eb392151 7 #include "MyFunctions.hpp"
MikamiUitOpen 0:e953eb392151 8
MikamiUitOpen 0:e953eb392151 9 // １フレーム分の信号処理 (イコライザ) の実行
MikamiUitOpen 0:e953eb392151 10 void ProcessSignal(SD_WavReader &sdReader, SaiIO_O &mySai,
MikamiUitOpen 0:e953eb392151 11 int16_t sn[], BiquadGrEq hn[], int stages)
MikamiUitOpen 0:e953eb392151 12 {
MikamiUitOpen 0:e953eb392151 13 // １フレーム分のデータを SD から読み込む
MikamiUitOpen 0:e953eb392151 14 sdReader.ReadAndToMono(sn, mySai.GetLength());
MikamiUitOpen 0:e953eb392151 15
MikamiUitOpen 0:e953eb392151 16 while (!mySai.IsXferred()) {} // データの転送が終わるまで待つ
MikamiUitOpen 0:e953eb392151 17 //--------------------------------------------------------------
MikamiUitOpen 0:e953eb392151 18 // １フレーム分のイコライザ処理を行い，その結果を出力する
MikamiUitOpen 0:e953eb392151 19 for (int n=0; n<mySai.GetLength(); n++)
MikamiUitOpen 0:e953eb392151 20 {
MikamiUitOpen 0:e953eb392151 21 // 縦続形の IIR フィルタ実行
MikamiUitOpen 0:e953eb392151 22 float yn = sn[n];
MikamiUitOpen 0:e953eb392151 23 for (int k=0; k<stages; k++) yn = hn[k].Execute(yn);
MikamiUitOpen 0:e953eb392151 24 int16_t value = (int16_t)yn;
MikamiUitOpen 0:e953eb392151 25 mySai.Output(value, value); // 音響信号の出力
MikamiUitOpen 0:e953eb392151 26 }
MikamiUitOpen 0:e953eb392151 27 //--------------------------------------------------------------
MikamiUitOpen 0:e953eb392151 28 mySai.ResetXferred(); // 次のデータ転送に備える
MikamiUitOpen 0:e953eb392151 29 }
MikamiUitOpen 0:e953eb392151 30
MikamiUitOpen 0:e953eb392151 31 // SD カードのファイルのオープン
MikamiUitOpen 0:e953eb392151 32 int32_t SD_Open(SD_WavReader &sdReader,
MikamiUitOpen 0:e953eb392151 33 string fileName, int32_t frameSize)
MikamiUitOpen 0:e953eb392151 34 {
MikamiUitOpen 0:e953eb392151 35 sdReader.Open(fileName);
MikamiUitOpen 0:e953eb392151 36 sdReader.IsWavFile();
MikamiUitOpen 0:e953eb392151 37 return sdReader.GetSize()/frameSize;
MikamiUitOpen 0:e953eb392151 38 }
MikamiUitOpen 0:e953eb392151 39
MikamiUitOpen 0:e953eb392151 40 // ファイルの選択
MikamiUitOpen 0:e953eb392151 41 // selectedName: 選択されたファイル名
MikamiUitOpen 0:e953eb392151 42 void SelectFile(ButtonGroup &menu, FileSelector &selector,
MikamiUitOpen 0:e953eb392151 43 Label &msg, string &selectedName)
MikamiUitOpen 0:e953eb392151 44 {
MikamiUitOpen 0:e953eb392151 45 msg.Draw("Select file");
MikamiUitOpen 0:e953eb392151 46 selector.DisplayFileList();
MikamiUitOpen 0:e953eb392151 47 do
MikamiUitOpen 0:e953eb392151 48 {
MikamiUitOpen 0:e953eb392151 49 if (selector.Select(selectedName))
MikamiUitOpen 0:e953eb392151 50 menu.Activate(1); // PLAY 有効
MikamiUitOpen 0:e953eb392151 51 wait_ms(200);
MikamiUitOpen 0:e953eb392151 52 } while (!menu.Touched(1)); // PLAY がタッチされるまで繰り返す
MikamiUitOpen 0:e953eb392151 53 }
MikamiUitOpen 0:e953eb392151 54
MikamiUitOpen 0:e953eb392151 55 // フィルタの周波数特性の変更
MikamiUitOpen 0:e953eb392151 56 void ModifyFilter(DesignerDrawer &drawerObj,
MikamiUitOpen 0:e953eb392151 57 SeekbarGroup &myBars, BiquadGrEq hn[],
MikamiUitOpen 0:e953eb392151 58 Button &reset)
MikamiUitOpen 0:e953eb392151 59 {
MikamiUitOpen 0:e953eb392151 60 if (reset.Touched())
MikamiUitOpen 0:e953eb392151 61 {
MikamiUitOpen 0:e953eb392151 62 drawerObj.DesignAndRedraw();
MikamiUitOpen 0:e953eb392151 63 for (int n=0; n<drawerObj.GetStages(); n++)
MikamiUitOpen 0:e953eb392151 64 hn[n] = BiquadGrEq(drawerObj.GetCoefficient(n));
MikamiUitOpen 0:e953eb392151 65 myBars.DrawAll(0); // ツマミの位置を 0 dB に設定する
MikamiUitOpen 0:e953eb392151 66 reset.Draw();
MikamiUitOpen 0:e953eb392151 67 return;
MikamiUitOpen 0:e953eb392151 68 }
MikamiUitOpen 0:e953eb392151 69 static int num = 0;
MikamiUitOpen 0:e953eb392151 70 if (!myBars.GetSlidedNumber(num)) return;
MikamiUitOpen 0:e953eb392151 71 drawerObj.DesignAndRedraw(myBars.GetValue(num), num);
MikamiUitOpen 0:e953eb392151 72 hn[num] = BiquadGrEq(drawerObj.GetCoefficient(num));
MikamiUitOpen 0:e953eb392151 73 }
MikamiUitOpen 0:e953eb392151 74
MikamiUitOpen 0:e953eb392151 75