This commit is a modified version of patch #6860

It adds read only dds support.  (Writing will come later)

Kent

1 files changed, 162 insertions, 0 deletions

diff --git a/source/blender/imbuf/intern/dds/DirectDrawSurface.h b/source/blender/imbuf/intern/dds/DirectDrawSurface.h
new file mode 100644
index 00000000000..2b3319d05a1
--- /dev/null
+++ b/source/blender/imbuf/intern/dds/DirectDrawSurface.h
@@ -0,0 +1,162 @@
+/**
+ * $Id$
+ *
+ * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version. The Blender
+ * Foundation also sells licenses for use in proprietary software under
+ * the Blender License.  See http://www.blender.org/BL/ for information
+ * about this.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * Contributors: Amorilia (amorilia@gamebox.net)
+ *
+ * ***** END GPL/BL DUAL LICENSE BLOCK *****
+ */
+
+/*
+ * This file is based on a similar file from the NVIDIA texture tools
+ * (http://nvidia-texture-tools.googlecode.com/)
+ *
+ * Original license from NVIDIA follows.
+ */
+
+// Copyright NVIDIA Corporation 2007 -- Ignacio Castano <icastano@nvidia.com>
+// 
+// Permission is hereby granted, free of charge, to any person
+// obtaining a copy of this software and associated documentation
+// files (the "Software"), to deal in the Software without
+// restriction, including without limitation the rights to use,
+// copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following
+// conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+// OTHER DEALINGS IN THE SOFTWARE.
+
+#ifndef _DDS_DIRECTDRAWSURFACE_H
+#define _DDS_DIRECTDRAWSURFACE_H
+
+#include <Stream.h>
+#include <ColorBlock.h>
+#include <Image.h>
+
+struct DDSPixelFormat {
+	unsigned int size;
+	unsigned int flags;
+	unsigned int fourcc;
+	unsigned int bitcount;
+	unsigned int rmask;
+	unsigned int gmask;
+	unsigned int bmask;
+	unsigned int amask;
+};
+
+struct DDSCaps {
+	unsigned int caps1;
+	unsigned int caps2;
+	unsigned int caps3;
+	unsigned int caps4;
+};
+
+/// DDS file header.
+struct DDSHeader {
+	unsigned int fourcc;
+	unsigned int size;
+	unsigned int flags;
+	unsigned int height;
+	unsigned int width;
+	unsigned int pitch;
+	unsigned int depth;
+	unsigned int mipmapcount;
+	unsigned int reserved[11];
+	DDSPixelFormat pf;
+	DDSCaps caps;
+	unsigned int notused;
+	
+	// Helper methods.
+	DDSHeader();
+	
+	void setWidth(unsigned int w);
+	void setHeight(unsigned int h);
+	void setDepth(unsigned int d);
+	void setMipmapCount(unsigned int count);
+	void setTexture2D();
+	void setTexture3D();
+	void setTextureCube();
+	void setLinearSize(unsigned int size);
+	void setPitch(unsigned int pitch);
+	void setFourCC(unsigned char c0, unsigned char c1, unsigned char c2, unsigned char c3);
+	void setPixelFormat(unsigned int bitcount, unsigned int rmask, unsigned int gmask, unsigned int bmask, unsigned int amask);
+	void setNormalFlag(bool b);
+	
+	/* void swapBytes(); */
+};
+
+/// DirectDraw Surface. (DDS)
+class DirectDrawSurface
+{
+public:
+	DirectDrawSurface(unsigned char *mem, unsigned int size);
+	~DirectDrawSurface();
+	
+	bool isValid() const;
+	bool isSupported() const;
+	
+	unsigned int mipmapCount() const;
+	unsigned int width() const;
+	unsigned int height() const;
+	unsigned int depth() const;
+	bool isTexture2D() const;
+	bool isTexture3D() const;
+	bool isTextureCube() const;
+	bool hasAlpha() const; /* false for DXT1, true for all others */
+	
+	void mipmap(Image * img, unsigned int f, unsigned int m);
+	
+	void printInfo() const;
+
+private:
+	
+	unsigned int blockSize() const;
+	unsigned int faceSize() const;
+	unsigned int mipmapSize(unsigned int m) const;
+	
+	unsigned int offset(unsigned int f, unsigned int m);
+	
+	void readLinearImage(Image * img);
+	void readBlockImage(Image * img);
+	void readBlock(ColorBlock * rgba);
+	
+	
+private:
+	Stream stream; // memory where DDS file resides
+	DDSHeader header;
+};
+
+void mem_read(Stream & mem, DDSPixelFormat & pf);
+void mem_read(Stream & mem, DDSCaps & caps);
+void mem_read(Stream & mem, DDSHeader & header);
+
+#endif // _DDS_DIRECTDRAWSURFACE_H