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Add KTX writer.

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This commit is contained in:
Pavel Krajcevski 2014-01-23 18:24:11 -05:00
parent 553dc44ca5
commit 552b8440b1
3 changed files with 221 additions and 0 deletions
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2
IO/CMakeLists.txt
View file

@ -90,6 +90,8 @@ SET( HEADERS ${HEADERS} "src/ImageLoaderTGA.h" )
# Add KTX loaders # Add KTX loaders
SET( SOURCES ${SOURCES} "src/ImageLoaderKTX.cpp" ) SET( SOURCES ${SOURCES} "src/ImageLoaderKTX.cpp" )
SET( HEADERS ${HEADERS} "src/ImageLoaderKTX.h" ) SET( HEADERS ${HEADERS} "src/ImageLoaderKTX.h" )
SET( SOURCES ${SOURCES} "src/ImageWriterKTX.cpp" )
SET( HEADERS ${HEADERS} "src/ImageWriterKTX.h" )
FIND_PACKAGE( OpenGL ) FIND_PACKAGE( OpenGL )
IF(OPENGL_FOUND) IF(OPENGL_FOUND)

148
IO/src/ImageWriterKTX.cpp Normal file
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@ -0,0 +1,148 @@
/* FasTC
* Copyright (c) 2014 University of North Carolina at Chapel Hill.
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for educational, research, and non-profit purposes, without
* fee, and without a written agreement is hereby granted, provided that the
* above copyright notice, this paragraph, and the following four paragraphs
* appear in all copies.
*
* Permission to incorporate this software into commercial products may be
* obtained by contacting the authors or the Office of Technology Development
* at the University of North Carolina at Chapel Hill <otd@unc.edu>.
*
* This software program and documentation are copyrighted by the University of
* North Carolina at Chapel Hill. The software program and documentation are
* supplied "as is," without any accompanying services from the University of
* North Carolina at Chapel Hill or the authors. The University of North
* Carolina at Chapel Hill and the authors do not warrant that the operation of
* the program will be uninterrupted or error-free. The end-user understands
* that the program was developed for research purposes and is advised not to
* rely exclusively on the program for any reason.
*
* IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE
* AUTHORS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
* OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF
* THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF NORTH CAROLINA
* AT CHAPEL HILL OR THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS SPECIFICALLY
* DISCLAIM ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY
* STATUTORY WARRANTY OF NON-INFRINGEMENT. THE SOFTWARE PROVIDED HEREUNDER IS ON
* AN "AS IS" BASIS, AND THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND
* THE AUTHORS HAVE NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
* ENHANCEMENTS, OR MODIFICATIONS.
*
* Please send all BUG REPORTS to <pavel@cs.unc.edu>.
*
* The authors may be contacted via:
*
* Pavel Krajcevski
* Dept of Computer Science
* 201 S Columbia St
* Frederick P. Brooks, Jr. Computer Science Bldg
* Chapel Hill, NC 27599-3175
* USA
*
* <http://gamma.cs.unc.edu/FasTC/>
*/
#include "ImageWriterKTX.h"
#include <cstdlib>
#include <cstdio>
#include <cstring>
#include "Image.h"
#include "Pixel.h"
#include "CompressedImage.h"
#include "GLDefines.h"
ImageWriterKTX::ImageWriterKTX(FasTC::Image<> &im)
: ImageWriter(im.GetWidth(), im.GetHeight(), NULL)
, m_Image(im)
{ }
class ByteWriter {
private:
uint8 *m_Head;
uint32 m_BytesWritten;
public:
ByteWriter(uint8 *dst) : m_Head(dst), m_BytesWritten(0) { }
uint32 GetBytesWritten() const { return m_BytesWritten; }
void Write(const uint32 v) {
memcpy(m_Head, &v, 4);
m_Head += 4;
m_BytesWritten += 4;
}
void Write(const void *src, const uint32 nBytes) {
memcpy(m_Head, src, nBytes);
m_Head += nBytes;
m_BytesWritten += nBytes;
}
};
bool ImageWriterKTX::WriteImage() {
ByteWriter wtr (m_RawFileData);
const uint8 kIdentifier[12] = {
0xAB, 0x4B, 0x54, 0x58, 0x20, 0x31, 0x31, 0xBB, 0x0D, 0x0A, 0x1A, 0x0A
};
wtr.Write(kIdentifier, 12);
wtr.Write(0x04030201);
const char *orientationKey = "KTXorientation";
const char *orientationValue = "S=r,T=u";
const uint32 kvSz =
strlen(orientationKey) + 1 // key
+ strlen(orientationValue) + 1; // value
uint32 tkvSz = kvSz + 4; // total kv size
tkvSz = (tkvSz + 3) & ~0x3; // 4-byte aligned
CompressedImage *ci = dynamic_cast<CompressedImage *>(&m_Image);
if(ci && ci->GetFormat() == FasTC::eCompressionFormat_BPTC) {
wtr.Write(0); // glType
wtr.Write(1); // glTypeSize
wtr.Write(GL_RGBA); // glFormat
wtr.Write(GL_COMPRESSED_RGBA_BPTC_UNORM); // glInternalFormat
wtr.Write(GL_RGBA); // glBaseFormat
} else {
wtr.Write(GL_BYTE); // glType
wtr.Write(1); // glTypeSize
wtr.Write(GL_RGBA); // glFormat
wtr.Write(GL_RGBA8); // glInternalFormat
wtr.Write(GL_RGBA); // glBaseFormat
}
wtr.Write(m_Width); // pixelWidth
wtr.Write(m_Height); // pixelHeight
wtr.Write(0); // pixelDepth
wtr.Write(0); // numberOfArrayElements
wtr.Write(1); // numberOfFaces
wtr.Write(1); // numberOfMipmapLevels
wtr.Write(tkvSz); // total key value size
wtr.Write(kvSz); // key value size
wtr.Write(orientationKey, strlen(orientationKey) + 1); // key
wtr.Write(orientationValue, strlen(orientationValue) + 1); // value
wtr.Write(orientationKey, tkvSz - kvSz); // padding
if(ci && ci->GetFormat() == FasTC::eCompressionFormat_BPTC) {
static const uint32 kImageSize = m_Width * m_Height;
wtr.Write(kImageSize); // imageSize
wtr.Write(ci->GetCompressedData(), kImageSize); // imagedata...
} else {
static const uint32 kImageSize = m_Width * m_Height * 4;
wtr.Write(kImageSize); // imageSize
wtr.Write(m_Image.GetPixels(), kImageSize); // imagedata...
}
m_RawFileDataSz = wtr.GetBytesWritten();
return true;
}

71
IO/src/ImageWriterKTX.h Normal file
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@ -0,0 +1,71 @@
/* FasTC
* Copyright (c) 2014 University of North Carolina at Chapel Hill.
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for educational, research, and non-profit purposes, without
* fee, and without a written agreement is hereby granted, provided that the
* above copyright notice, this paragraph, and the following four paragraphs
* appear in all copies.
*
* Permission to incorporate this software into commercial products may be
* obtained by contacting the authors or the Office of Technology Development
* at the University of North Carolina at Chapel Hill <otd@unc.edu>.
*
* This software program and documentation are copyrighted by the University of
* North Carolina at Chapel Hill. The software program and documentation are
* supplied "as is," without any accompanying services from the University of
* North Carolina at Chapel Hill or the authors. The University of North
* Carolina at Chapel Hill and the authors do not warrant that the operation of
* the program will be uninterrupted or error-free. The end-user understands
* that the program was developed for research purposes and is advised not to
* rely exclusively on the program for any reason.
*
* IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE
* AUTHORS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
* OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF
* THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF NORTH CAROLINA
* AT CHAPEL HILL OR THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS SPECIFICALLY
* DISCLAIM ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY
* STATUTORY WARRANTY OF NON-INFRINGEMENT. THE SOFTWARE PROVIDED HEREUNDER IS ON
* AN "AS IS" BASIS, AND THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND
* THE AUTHORS HAVE NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
* ENHANCEMENTS, OR MODIFICATIONS.
*
* Please send all BUG REPORTS to <pavel@cs.unc.edu>.
*
* The authors may be contacted via:
*
* Pavel Krajcevski
* Dept of Computer Science
* 201 S Columbia St
* Frederick P. Brooks, Jr. Computer Science Bldg
* Chapel Hill, NC 27599-3175
* USA
*
* <http://gamma.cs.unc.edu/FasTC/>
*/
#ifndef _IMAGE_WRITER_KTX_H_
#define _IMAGE_WRITER_KTX_H_
#include "ImageWriter.h"
#include "ImageFwd.h"
// Forward Declare
class ImageWriterKTX : public ImageWriter {
public:
ImageWriterKTX(FasTC::Image<> &);
virtual ~ImageWriterKTX() { }
virtual bool WriteImage();
private:
FasTC::Image<> &m_Image;
};
#endif // _IMAGE_LOADER_H_