/***************************************************************************
?*???Copyright?（C）?2008?-?Giuseppe?Cigala??????????????????????????????????*
?*???g_cigala@virgilio.it??????????????????????????????????????????????????*
?*?????????????????????????????????????????????????????????????????????????*
?*???This?program?is?free?software;?you?can?redistribute?it?and/or?modify??*
?*???it?under?the?terms?of?the?GNU?General?Public?License?as?published?by??*
?*???the?Free?Software?Foundation;?either?version?2?of?the?License?or?????*
?*???（at?your?option）?any?later?version.???????????????????????????????????*
?*?????????????????????????????????????????????????????????????????????????*
?*???This?program?is?distributed?in?the?hope?that?it?will?be?useful???????*
?*???but?WITHOUT?ANY?WARRANTY;?without?even?the?implied?warranty?of????????*
?*???MERCHANTABILITY?or?FITNESS?FOR?A?PARTICULAR?PURPOSE.??See?the?????????*
?*???GNU?General?Public?License?for?more?details.??????????????????????????*
?*?????????????????????????????????????????????????????????????????????????*
?*???You?should?have?received?a?copy?of?the?GNU?General?Public?License?????*
?*???along?with?this?program;?if?not?write?to?the?????????????????????????*
?*???Free?Software?Foundation?Inc.???????????????????????????????????????*
?*???59?Temple?Place?-?Suite?330?Boston?MA??02111-1307?USA.?????????????*
?***************************************************************************/


#include?“qfreq.h“

QFreq::QFreq（QWidget?*parent）?:?QWidget（parent）
{
????initValue（）;
????initColor（）;

}

void?QFreq::initValue（）
{
????start_point?=?0;
????zoom_point?=?（（1024/2）+1）*20000/22050;
????freq1?=?0;
????freq2?=?5;
????freq3?=?10;
????freq4?=?15;
????freq5?=?20;
????range_freq?=?20;
????typeFFT?=?0;
????lockFFT?=?false;

}

void?QFreq::initColor（）
{
	colLin?=?Qt::black;
????colLog?=?Qt::black;
????col512?=?Qt::black;
????col1024?=?Qt::black;
????col2048?=?Qt::black;
????col4096?=?Qt::black;
????colLock?=?Qt::red;
}

void?QFreq::setZoomPoint（int?N）
{
????zoom_point?=?（（N/2）+1）*20000/22050;
}

void?QFreq::calculateFFT（int?N）
{
????/*
???????QFile?file?（“test.wav“）;
???????if?（!file.open（QIODevice::ReadOnly））
???????????return;
???????char?*data;
???????file.read（data?N）;

???????for?（i?=0;?i?<=N;?i++）
???????{
???????????in[i]?=?（double）data[i];
???????????i++;
???????}
??????
???????*/
????double?*in;
????double?*out;
????fftw_plan?plan;
????double?A[N];
????magnitudeLin?=?0;
????magnitudeLog?=?0;
????min_val_lin?=?5000000;
????max_val_lin?=?-1000;
????min_val_log?=?5000000;
????max_val_log?=?-1000;
????int?is16bitfile?=?1;
????int?val?val2;
????char?inc[N];
????FILE?*infile;
????const?char?*?fileName?=?wavFile.toLatin1（）.data（）;
????infile?=?fopen（fileName?“r“）;

????//?skip?wav?file?header
????fgets（inc37infile）;
????fgets（inc9infile）;

????//?read?data?and?fill?“A“-array
????for?（int?v=0;?v????{
????????val?=?fgetc（infile）;
????????if?（is16bitfile）
????????{
????????????val2?=?f