options.cpp

visual c++ 实例编程

// Options.cpp : implementation file
//

#include "stdafx.h"
#include "MusicRip.h"
#include "Options.h"
#include <mmsystem.h>
#include <direct.h>

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

extern WAVEHDR wavehdr;
extern char MusicDir[MAX_PATH];
extern int TempMem;
extern HANDLE hFileCF, hFileCFM;
extern DWORD lFileSize;
extern WAVEFORMATEX wfx;
extern BOOL ShellGetPath(HANDLE hDlg, char lpszPath[]);

int MemoryMethod=-1, TempMinSec;

#define ONE_BLOCK 1024*1024

/////////////////////////////////////////////////////////////////////////////
// COptions dialog


COptions::COptions(CWnd* pParent /*=NULL*/)
	: CDialog(COptions::IDD, pParent)
{
	//{{AFX_DATA_INIT(COptions)
	m_Bits = -1;
	m_One = -1;
	m_ChOne = -1;
	m_MinSec = -1;
	//}}AFX_DATA_INIT
}


void COptions::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(COptions)
	DDX_Control(pDX, IDC_BROWSE, m_Browse);
	DDX_Control(pDX, IDC_SEC, m_Sec);
	DDX_Control(pDX, IDC_MIN, m_Min);
	DDX_Control(pDX, IDC_DIR, m_Dir);
	DDX_Control(pDX, IDC_TEMP, m_TempMem);
	DDX_Radio(pDX, IDC_BITS8, m_Bits);
	DDX_Radio(pDX, IDC_ONE, m_One);
	DDX_Radio(pDX, IDC_CHANNELONE, m_ChOne);
	DDX_Radio(pDX, IDC_TEMPRAD, m_MinSec);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(COptions, CDialog)
	//{{AFX_MSG_MAP(COptions)
	ON_BN_CLICKED(IDC_MINSEC, OnMinsec)
	ON_BN_CLICKED(IDC_TEMPRAD, OnTemprad)
	ON_BN_CLICKED(IDC_BROWSE, OnBrowse)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// COptions message handlers

void COptions::OnOK() 
{
	// TODO: Add extra validation here
	UpdateData(TRUE);
	m_Dir.GetWindowText(MusicDir, MAX_PATH);

	if(!strlen(MusicDir)){
		AfxMessageBox("Music files folder must be specified!");
		return;
	}
	char TmpStr[15];
	m_TempMem.GetWindowText(TmpStr, 10);
	TempMem = atoi(TmpStr);
	if(_chdir(MusicDir)){
		AfxMessageBox("Music files folder error!");
		return;
	}
/*	hFileCF=CreateFile("TEMP.TMP", GENERIC_READ|GENERIC_WRITE, FILE_SHARE_READ, NULL, CREATE_ALWAYS,
			FILE_ATTRIBUTE_NORMAL, NULL);
	HANDLE hMem = LocalAlloc(LMEM_MOVEABLE|LMEM_ZEROINIT, ONE_BLOCK);
	LPBYTE pMem	= (LPBYTE) LocalLock(hMem);
	for(int i=0; i<TempMem; i++){
		DWORD Tmp;
		WriteFile(hFileCF, pMem, ONE_BLOCK, &Tmp, NULL);
		if(Tmp != ONE_BLOCK){
			AfxMessageBox("Memory insufficient for temporary file!");
			LocalUnlock(hMem);
			LocalFree(hMem);
			return;
		}
	}
	LocalUnlock(hMem);
	LocalFree(hMem);
	lFileSize = GetFileSize(hFileCF, NULL);

	hFileCFM=CreateFileMapping(hFileCF, NULL, PAGE_READWRITE, 0, lFileSize, NULL);
	wavehdr.lpData=(LPSTR)MapViewOfFile(hFileCFM, FILE_MAP_WRITE, 0, 0, 0);*/
	wfx.nSamplesPerSec = 11025 * (m_One == 0 ? 1:(m_One<<1));          // 11.025 kHz (11.025 * 1000)
	wfx.nChannels = m_ChOne + 1;
	wfx.wBitsPerSample  = (m_Bits + 1) * 8;
	if(m_MinSec){
		m_Min.GetWindowText(TmpStr, 10);
		TempMem = atoi(TmpStr)*60;
		m_Sec.GetWindowText(TmpStr, 10);
		TempMem += atoi(TmpStr);
		TempMinSec = TempMem;
		TempMem = (TempMem * wfx.nSamplesPerSec * wfx.nChannels * (wfx.wBitsPerSample/8)) / (1024*1024) + 1;
	}
	LPSTR TmpVal;
	if(wavehdr.lpData)
		VirtualFree(wavehdr.lpData, 0, MEM_RELEASE);
	if((TmpVal = (LPSTR) VirtualAlloc(NULL, TempMem*1024*1024, MEM_COMMIT, PAGE_READWRITE))==NULL){
		AfxMessageBox("Unable to create memory!");
		return;
	}
	wavehdr.lpData = TmpVal;
//	LPSTR pTmp = wavehdr.lpData;
	wavehdr.dwBufferLength = TempMem*1024*1024;
	MemoryMethod = m_MinSec;

	CDialog::OnOK();
}

BOOL COptions::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	UpdateData(TRUE);
	m_Dir.SetWindowText(MusicDir);
	char TmpStr[50];
	itoa(TempMem, TmpStr, 10);
	m_One = (wfx.nSamplesPerSec/11025) >> 1;
	m_ChOne = wfx.nChannels ? wfx.nChannels-1 : 1;
	m_Bits = wfx.wBitsPerSample >> 4;
	m_MinSec = MemoryMethod < 0 ? 1:MemoryMethod;
	MemoryMethod = m_MinSec;
	if(!MemoryMethod)
		OnTemprad();
	else
		OnMinsec();

	m_TempMem.SetWindowText(TmpStr);
	itoa(TempMinSec/60, TmpStr, 10);
	m_Min.SetWindowText(TmpStr);
	itoa(TempMinSec%60, TmpStr, 10);
	m_Sec.SetWindowText(TmpStr);

	UpdateData(FALSE);
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}


void COptions::OnMinsec() 
{
	// TODO: Add your control notification handler code here
	m_Min.EnableWindow(TRUE);
	m_Sec.EnableWindow(TRUE);
	m_TempMem.EnableWindow(FALSE);
}

void COptions::OnTemprad() 
{
	// TODO: Add your control notification handler code here
	m_Min.EnableWindow(FALSE);
	m_Sec.EnableWindow(FALSE);
	m_TempMem.EnableWindow(TRUE);
}

void COptions::OnBrowse() 
{
	// TODO: Add your control notification handler code here
	if(ShellGetPath(this->m_hWnd, MusicDir))
		m_Dir.SetWindowText(MusicDir);
}