From 393b5cd1dc438872af89d334ef6e5fcc59f27d47 Mon Sep 17 00:00:00 2001
From: David Walter Seikel
Date: Sun, 13 Jan 2013 17:24:39 +1000
Subject: Added Irrlicht 1.8, but without all the Windows binaries.

---
 .../source/Irrlicht/CImageWriterTGA.cpp            | 147 +++++++++++++++++++++
 1 file changed, 147 insertions(+)
 create mode 100644 libraries/irrlicht-1.8/source/Irrlicht/CImageWriterTGA.cpp

(limited to 'libraries/irrlicht-1.8/source/Irrlicht/CImageWriterTGA.cpp')

diff --git a/libraries/irrlicht-1.8/source/Irrlicht/CImageWriterTGA.cpp b/libraries/irrlicht-1.8/source/Irrlicht/CImageWriterTGA.cpp
new file mode 100644
index 0000000..4a87eeb
--- /dev/null
+++ b/libraries/irrlicht-1.8/source/Irrlicht/CImageWriterTGA.cpp
@@ -0,0 +1,147 @@
+// Copyright (C) 2002-2012 Nikolaus Gebhardt
+// This file is part of the "Irrlicht Engine".
+// For conditions of distribution and use, see copyright notice in irrlicht.h
+
+#include "CImageWriterTGA.h"
+
+#ifdef _IRR_COMPILE_WITH_TGA_WRITER_
+
+#include "CImageLoaderTGA.h"
+#include "IWriteFile.h"
+#include "CColorConverter.h"
+#include "irrString.h"
+
+namespace irr
+{
+namespace video
+{
+
+IImageWriter* createImageWriterTGA()
+{
+	return new CImageWriterTGA;
+}
+
+CImageWriterTGA::CImageWriterTGA()
+{
+#ifdef _DEBUG
+	setDebugName("CImageWriterTGA");
+#endif
+}
+
+bool CImageWriterTGA::isAWriteableFileExtension(const io::path& filename) const
+{
+	return core::hasFileExtension ( filename, "tga" );
+}
+
+bool CImageWriterTGA::writeImage(io::IWriteFile *file, IImage *image,u32 param) const
+{
+	STGAHeader imageHeader;
+	imageHeader.IdLength = 0;
+	imageHeader.ColorMapType = 0;
+	imageHeader.ImageType = 2;
+	imageHeader.FirstEntryIndex[0] = 0;
+	imageHeader.FirstEntryIndex[1] = 0;
+	imageHeader.ColorMapLength = 0;
+	imageHeader.ColorMapEntrySize = 0;
+	imageHeader.XOrigin[0] = 0;
+	imageHeader.XOrigin[1] = 0;
+	imageHeader.YOrigin[0] = 0;
+	imageHeader.YOrigin[1] = 0;
+	imageHeader.ImageWidth = image->getDimension().Width;
+	imageHeader.ImageHeight = image->getDimension().Height;
+
+	// top left of image is the top. the image loader needs to
+	// be fixed to only swap/flip
+	imageHeader.ImageDescriptor = (1 << 5);
+
+   // chances are good we'll need to swizzle data, so i'm going
+	// to convert and write one scan line at a time. it's also
+	// a bit cleaner this way
+	void (*CColorConverter_convertFORMATtoFORMAT)(const void*, s32, void*) = 0;
+	switch(image->getColorFormat())
+	{
+	case ECF_A8R8G8B8:
+		CColorConverter_convertFORMATtoFORMAT
+			= CColorConverter::convert_A8R8G8B8toA8R8G8B8;
+		imageHeader.PixelDepth = 32;
+		imageHeader.ImageDescriptor |= 8;
+		break;
+	case ECF_A1R5G5B5:
+		CColorConverter_convertFORMATtoFORMAT
+			= CColorConverter::convert_A1R5G5B5toA1R5G5B5;
+		imageHeader.PixelDepth = 16;
+		imageHeader.ImageDescriptor |= 1;
+		break;
+	case ECF_R5G6B5:
+		CColorConverter_convertFORMATtoFORMAT
+			= CColorConverter::convert_R5G6B5toA1R5G5B5;
+		imageHeader.PixelDepth = 16;
+		imageHeader.ImageDescriptor |= 1;
+		break;
+	case ECF_R8G8B8:
+		CColorConverter_convertFORMATtoFORMAT
+			= CColorConverter::convert_R8G8B8toR8G8B8;
+		imageHeader.PixelDepth = 24;
+		imageHeader.ImageDescriptor |= 0;
+		break;
+#ifndef _DEBUG
+	default:
+		break;
+#endif
+	}
+
+	// couldn't find a color converter
+	if (!CColorConverter_convertFORMATtoFORMAT)
+		return false;
+
+	if (file->write(&imageHeader, sizeof(imageHeader)) != sizeof(imageHeader))
+		return false;
+
+	u8* scan_lines = (u8*)image->lock();
+	if (!scan_lines)
+		return false;
+
+	// size of one pixel in bytes
+	u32 pixel_size = image->getBytesPerPixel();
+
+	// length of one row of the source image in bytes
+	u32 row_stride = (pixel_size * imageHeader.ImageWidth);
+
+	// length of one output row in bytes
+	s32 row_size = ((imageHeader.PixelDepth / 8) * imageHeader.ImageWidth);
+
+	// allocate a row do translate data into
+	u8* row_pointer = new u8[row_size];
+
+	u32 y;
+	for (y = 0; y < imageHeader.ImageHeight; ++y)
+	{
+		// source, length [pixels], destination
+		if (image->getColorFormat()==ECF_R8G8B8)
+			CColorConverter::convert24BitTo24Bit(&scan_lines[y * row_stride], row_pointer, imageHeader.ImageWidth, 1, 0, 0, true);
+		else
+			CColorConverter_convertFORMATtoFORMAT(&scan_lines[y * row_stride], imageHeader.ImageWidth, row_pointer);
+		if (file->write(row_pointer, row_size) != row_size)
+			break;
+	}
+
+	delete [] row_pointer;
+
+	image->unlock();
+
+	STGAFooter imageFooter;
+	imageFooter.ExtensionOffset = 0;
+	imageFooter.DeveloperOffset = 0;
+	strncpy(imageFooter.Signature, "TRUEVISION-XFILE.", 18);
+
+	if (file->write(&imageFooter, sizeof(imageFooter)) < (s32)sizeof(imageFooter))
+		return false;
+
+	return imageHeader.ImageHeight <= y;
+}
+
+} // namespace video
+} // namespace irr
+
+#endif
+
-- 
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