C++ CFileHandler::LinkFile方法代码示例

void CMD5Model::LoadModel( const std::string& a_Path, const std::string& a_SubFolder )
{	 
	if ( CFile::FileExists( a_Path.c_str() ) == false )
	{
		CLog::GetInstance()->OutMessage( "Model file does not exist (%s)", CLog::MESSAGETYPE_ERROR, a_Path.c_str() );
	}

	m_SubFolder = a_SubFolder;

	CFlatFile modelFile;
	modelFile.Open( a_Path.c_str(), CFile::FILEMODE_READ, CFile::FILETYPE_PLAIN );
	
	CFileHandler fileHandler;
	fileHandler.LinkFile( &modelFile );

	std::string data;
	std::string dataTwo;

	Uint position = modelFile.GetPosition();
	data = fileHandler.ReadString();
	while ( ( position = modelFile.GetPosition() ) < modelFile.GetSize() )
	{
		if ( data == "MD5Version" )
		{
			dataTwo = fileHandler.ReadString();
			Int versionNumber = atoi( dataTwo.c_str() );
			assert( versionNumber == 10 && "Incorrect version number in MD5file" );
		}
		else if ( data == "commandline" )
		{
			//We don't need this so skip
			dataTwo = fileHandler.ReadString();
		}
		else if ( data == "numJoints" )
		{
			dataTwo = fileHandler.ReadString();
			m_JointCount = atoi( dataTwo.c_str() );
		}
		else if ( data == "numMeshes" )
		{
			dataTwo = fileHandler.ReadString();
			m_MeshCount = atoi( dataTwo.c_str() );
		}
		else if ( data == "joints" )
		{
			//Read out all the joint
			SJoint joint;
			data = fileHandler.ReadString();
			data = fileHandler.ReadString();
			for ( Uint i = 0; i < m_JointCount; ++i )
			{
				joint.m_Name = fileHandler.ReadString();
				joint.m_Name.pop_back();
				joint.m_Name.erase( joint.m_Name.begin() );
				data = fileHandler.ReadString();
				joint.m_ParentID = atoi( data.c_str() );
				data = fileHandler.ReadString();
				for ( Uint j = 0; j < 3; ++j )
				{
					data = fileHandler.ReadString();
					joint.m_Position.Cell[j] = (Float)atof( data.c_str() );
				}
				data = fileHandler.ReadString();
				data = fileHandler.ReadString();
				for ( Uint j = 0; j < 3; ++j )
				{
					data = fileHandler.ReadString();
					joint.m_Orientation.Cell[j] = (Float)atof( data.c_str() );
				}
				joint.m_Orientation.ComputeW();

				data = fileHandler.ReadString();
				data = fileHandler.ReadString();

				m_Joints.push_back( joint );
			}
			//}
			data = fileHandler.ReadString();

		}
		else if ( data == "mesh" )
		{
			//Read the mesh
			SMesh* mesh = LoadMesh( fileHandler );
			//Prepare the mesh and generate normals
			PrepareMesh( mesh );
			PrepareNormals( mesh );
			//Generate rendering buffers
			CreateBuffers( mesh );
			CreateVAO( mesh );
			m_Meshes.push_back( mesh );
		}

		data = fileHandler.ReadString();
	}
}	

const Bool CWAVFile::LoadFromFile( const Char* a_FilePath )
{
	m_FilePath += a_FilePath;
	CFlatFile file; CFileHandler fileHandler;
	//Open the file
	file.Open( a_FilePath, CFile::FILEMODE_READ, CFile::FILETYPE_BINARY );
	//Link the file to the filehandler
	fileHandler.LinkFile( &file );	
	//Read out the header ( yay for templates )
	fileHandler.Read<CWAVFile::SWaveHeader>( &m_Header );

	CLog* log = CLog::GetInstance();

	//Check chunkID
	Char* chunkID = (Char*)&m_Header.m_ChunkID;	
	if ( strncmp( chunkID, "RIFF", 4 ) != 0 )
	{
		log->OutMessage( "ChunkID does not correspond to RIFF", CLog::MESSAGETYPE_WARNING );
		return false;
	}
	//Check chunkSize
	if ( m_Header.m_ChunkSize != file.GetSize() - 8 )
	{
		log->OutMessage( "Filesize does not match size defined in the header", CLog::MESSAGETYPE_WARNING );
		return false;
	}
	Char* formatString = (Char*)&m_Header.m_Format;	
	//Check format
	if ( strncmp( "WAVE", formatString, 4 ) != 0 )
	{
		log->OutMessage( "Format does not correspond to WAVE", CLog::MESSAGETYPE_WARNING );
		return false;
	}
	const Char* subChunkOneID = (Char*)&m_Header.m_SubChunkOneID;
	//Check subchunk ID
	if ( strncmp( "fmt", subChunkOneID, 3 ) != 0 )
	{
		log->OutMessage( "ChunkOne ID does not match fmt", CLog::MESSAGETYPE_WARNING );
		return false;
	}
	//Check subchunk size
	if ( m_Header.m_SubChunkOneSize != 16 )
	{
		log->OutMessage( "ChunkOne size does not match the PCM value ( 16 ), others are not supported", CLog::MESSAGETYPE_WARNING );
		return false;
	}
	//Check audio format
	if ( m_Header.m_AudioFormat != 1 )
	{
		log->OutMessage( "Audio format not match the PCM value ( 1 ), others are not supported", CLog::MESSAGETYPE_WARNING );
		return false;
	}
	//Check Channel count
	if ( m_Header.m_ChannelCount == 0 )
	{
		log->OutMessage( "No audio channels found in the header", CLog::MESSAGETYPE_WARNING );
		return false;
	}
	Int bytesPerSample = m_Header.m_BitsPerSample / 8;
	//Check if byterate matches other values
	if ( m_Header.m_ByteRate != ( m_Header.m_SampleRate * m_Header.m_ChannelCount * bytesPerSample ) )
	{
		log->OutMessage( "Byterate does not match other values in header", CLog::MESSAGETYPE_WARNING );
		return false;
	}
	//Block allignment
	if ( m_Header.m_BlockAllignment != ( m_Header.m_ChannelCount * bytesPerSample ) )
	{
		log->OutMessage( "Block allignment does not match other values in header", CLog::MESSAGETYPE_WARNING );
		return false;
	}
	//Check for valid bbp
	if ( bytesPerSample != 1 && bytesPerSample != 2 )
	{
		log->OutMessage( "BBp value is not support only 8;16 are supported", CLog::MESSAGETYPE_WARNING );
		return false;
	}

	//Reading of chunks 
	const Char* subChunkID = (Char*)&m_Header.m_SubChunkTwoID;
	while ( strncmp( subChunkID, "data", 4 ) != 0 )
	{
		int currentPosition = file.GetPosition();
		file.Skip( m_Header.m_SubChunkTwoSize );

		fileHandler.Read<Int>( m_Header.m_SubChunkTwoID, 1 );
		fileHandler.Read<Int>( m_Header.m_SubChunkTwoSize, 1 );
	}

	////Check subchunk ID
	//if ( m_Header.m_SubChunkTwoID != _byteswap_ulong( 0x64617461 ) )
	//{
	//	//log->OutMessage( "ChunkTwo ID does not match data", CLog::MESSAGETYPE_WARNING );
	//	//return false;
	//}
	////Check subchunk size
	//if ( m_Header.m_SubChunkTwoSize != ( file.GetSize() - sizeof( SWaveHeader ) ) )
	//{
	//	log->OutMessage( "ChunkTwo size does not match the filesize", CLog::MESSAGETYPE_WARNING );		
	//}
//.........这里部分代码省略.........