Method StartSaving

trinity/Tr2StreamingBitmapSaver.cpp:45–100

-------------------------------------------------------------------------------------- Description: Starts saving TGA image. Opens a file and writes out a header. Arguments: path - Res or physical path to output TGA image width - Width of the image height - Height of the image pixelFormat - Image pixel format Return Value: AL result of operation ----------------------------------------------------

//   AL result of operation
// --------------------------------------------------------------------------------------
ALResult Tr2StreamingBitmapSaver::StartSaving(
	const wchar_t* path,
	uint32_t width,
	uint32_t height,
	Tr2RenderContextEnum::PixelFormat pixelFormat )
{
	if( IsSaving() )
	{
		CR_RETURN_HR( EndSaving() );
	}

	if( !ImageIO::Tga::IsSaveSupported( m_format ) )
	{
		CCP_LOGWARN(
			"Tr2StreamingBitmapSaver::StartSaving unsupported image format (%i)",
			pixelFormat );
		return E_INVALIDARG;
	}

	if( !width || !height )
	{
		CCP_LOGWARN(
			"Tr2StreamingBitmapSaver::StartSaving invalid image dimensions (%u x %u)",
			width,
			height );
		return E_INVALIDARG;
	}

	Be::Clsid resFileClsid( "blue", "ResFile" );
	IResFilePtr stream( resFileClsid );
	if( !( stream->FileExistsW( path ) ? stream->OpenW( path, false ) : stream->CreateW( path ) ) )
	{
		CCP_LOGWARN(
			"Tr2StreamingBitmapSaver::StartSaving failed to open Blue stream (%ls)",
			path );
		return E_FAIL;
	}

	if( !ImageIO::Tga::SaveHeader( width, height, pixelFormat, *stream ) )
	{
		CCP_LOGWARN(
			"Tr2StreamingBitmapSaver::StartSaving failed to write TGA header (%ls)",
			path );
		return E_FAIL;
	}

	m_output = stream;

	m_width = width;
	m_height = height;
	m_format = pixelFormat;
	m_bytesPerPixel = Tr2RenderContextEnum::GetBytesPerPixel( m_format );
	m_currentOffset = m_height;

	return S_OK;
}

// --------------------------------------------------------------------------------------