www.pudn.com > Tetris.rar > CWaveLoader.cpp

#include "CWaveLoader.h" 
 
#include  
#include  
#include  
 
 
// Construct and Destruct 
 
/// NewL() 
CWavLoader* CWavLoader::NewL() 
{ 
	CWavLoader* self = NewLC(); 
	CleanupStack::Pop(self); 
 
	return self; 
} 
 
// NewLC() 
CWavLoader* CWavLoader::NewLC() 
{ 
	CWavLoader* self = new (ELeave) CWavLoader; 
	CleanupStack::PushL(self); 
	self->ConstructL(); 
 
	return self; 
} 
 
/// ~ 
CWavLoader::~CWavLoader() 
{} 
 
/// CWavLoader() 
CWavLoader::CWavLoader() 
{} 
 
/// ConstructL() 
void CWavLoader::ConstructL() 
{} 
 
/// LoadL() 
TSample CWavLoader::LoadL(const TFileName& aFileName) 
{ 
	TFileName name(aFileName); 
	CompleteWithAppPath(name); 
 
	RFs fs; 
	RFile file; 
 
	fs.Connect(); 
 
	CleanupClosePushL(fs); 
	CleanupClosePushL(file); 
 
	User::LeaveIfError(file.Open(fs, name, EFileStream | EFileRead)); 
	 
	// get the file size 
	TInt size; 
	User::LeaveIfError(file.Size(size)); 
	 
	TUint8* tbuf = new (ELeave) TUint8[size]; 
 
	TPtr8 ptr( (TUint8*)tbuf, size ); 
	User::LeaveIfError(file.Read(ptr)); 
	 
	CleanupStack::PopAndDestroy( 2 ); // fs, file 
 
	// convert to 16-bit 
	TInt16* buf = new( ELeave )TInt16[size]; 
	TInt i; 
	for(i = 0; i < size; i++) 
	{ 
		TInt v = tbuf[i]; 
		v -= 128; 
		buf[i] = ( TInt16 )( v << 8 ); 
	} 
	delete tbuf; 
	 
	TSample sample; 
	sample.iData = buf; 
	sample.iLength = size; 
	sample.iRepStart = 0; 
	sample.iRepEnd = 0; 
	 
	return sample; 
}