Class for simple processing of audio input data

Process simple audio input data

Soundin class see my another blog http://blog.csdn.net/zgl7903/article/details/5669770

 

# Pragma once // microphone_measure.h # include "soundin. H" class cmicrophone_measure {public: cmicrophone_measure (); Virtual ~ Cmicrophone_measure (); Public: bool startmeasure (); void stopmeansure (); Public: typedef struct _ Empty {bool bvalid; DWORD dwptsize; // double fwave_frame_avg; // average value double fwave_frame_rms; // valid value double fwave_frame_max; // maximum value double fwave_frame_min; // minimum value double percentile; // absolute maximum value double fwave_frame_absmin; // absolute minimum value} wavemeasumeresult; protected metadata; bool isopened () {return bmicrophone_opened;} protected: bool metadata; csoundin m_soundin; static bool waveinproc (lpvoid puser, short * pdata, DWORD dwsize );};

 

 

# Include "stdafx. H "# include" microphone_measure.h "cmicrophone_measure: cmicrophone_measure () {bmicrophone_opened = false; // set the memset (& disabled, 0, sizeof (disabled) status )); // initialize the struct} cmicrophone_measure ::~ Cmicrophone_measure () {stopmeansure (); // stop measurement} bool cmicrophone_measure: startmeasure () {If (! Enabled) // non-open status {If (enabled (this, waveinproc) = mmsyserr_noerror) bmicrophone_opened = true;} return bmicrophone_opened;} void cmicrophone_measure: stopmeansure () {empty (); empty = false;} bool cmicrophone_measure: waveinproc (lpvoid puser, short * pdata, DWORD dwsize) {cmicrophone_measure * pthis = (cmicrophone_measure *) puser; wavemeasumeresult tmpresult = {0}; double dbval = pdata [0]; // The first vertex tmpresult. dwptsize = dwsize; // point tmpresult. fwave_frame_avg = dbval; // average tmpresult. fwave_frame_rms = POW (dbval, 2); // valid value tmpresult. fwave_frame_max = dbval; // maximum tmpresult. fwave_frame_min = dbval; // minimum tmpresult. fwave_frame_absmax = FABS (dbval); // the absolute maximum tmpresult. fwave_frame_absmin = FABS (dbval); // absolute minimum value for (DWORD I = 1; I <dwsize; I ++) {dbval = pdata [I]; // single-channel tmpresult. fwave_frame_avg + = dbval; // average tmpresult. fwave_frame_rms + = POW (dbval, 2); // valid value tmpresult. fwave_frame_max = max (dbval, tmpresult. fwave_frame_max); // maximum tmpresult. fwave_frame_min = min (dbval, tmpresult. fwave_frame_min); // The minimum tmpresult. fwave_frame_absmax = max (FABS (dbval), tmpresult. fwave_frame_absmax); // the absolute maximum tmpresult. fwave_frame_absmin = min (FABS (dbval), tmpresult. fwave_frame_absmin); // absolute minimum value} tmpresult. fwave_frame_avg/= dwsize; // average tmpresult. fwave_frame_rms = SQRT (tmpresult. fwave_frame_rms/dwsize); // valid value tmpresult. bvalid = true; pthis-> m_wavemeasureresult = tmpresult; return true ;}

 

// Simple application example

 

# Pragma once # include "inline" // ctestdlg dialog box class ctestdlg: Public cdialog {public: cmicrophone_measure m_microphone_measure; afx_msg void ontimer (uint_ptr nidevent); cprogressctrl m_progressctrl;

 

Bool ctestdlg: oninitdialog () {cdialog: oninitdialog (); // set the icon of this dialog box. When the main window of the application is not a dialog box, the framework will automatically // execute this operation seticon (m_hicon, true); // set the big icon seticon (m_hicon, false ); // set the small icon // todo: add the additional initialization code here. If (m_microphone_measure.startmeasure () settimer (1,100, null); Return true; // unless focus is set to the control, otherwise, return true} void ctestdlg: ontimer (uint_ptr nidevent) {// todo: add the message processing program code and/or call the default value if (wait) {cstring itemstr; itemstr. format (_ T ("points % LD \ r \ n") _ T ("average % G \ r \ n ") _ T ("valid value % G \ r \ n") _ T ("Maximum Value % G \ r \ n") _ T ("minimum value % G \ r \ n ") _ T ("absolute maximum value % G \ r \ n") _ T ("absolute minimum value % G \ r \ n"), m_microphone_measure.m_wavemeasureresult.dwptsize, // points must, // average vertex, // valid value vertex, // maximum m_microphone_measure.m_wavemeasureresult.fwave_frame_min, // minimum vertex, // absolute maximum vertex, // absolute minimum value 0); setdlgitemtext (idc_edit1, itemstr);} cdialog: ontimer (nidevent );}