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106 lines
2.4 KiB
106 lines
2.4 KiB
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2015 Alec Jacobson <alecjacobson@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef IGL_OPENGL_TGA_H
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#define IGL_OPENGL_TGA_H
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#include "../../igl_inline.h"
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#include "../../opengl2/gl.h"
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// See license in tga.cpp
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/* tga.h - interface for TrueVision (TGA) image file loader */
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#include <stdio.h>
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#ifdef _WIN32
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#include <windows.h>
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#endif
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namespace igl
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{
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namespace opengl
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{
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typedef struct {
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GLsizei width;
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GLsizei height;
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GLint components;
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GLenum format;
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GLsizei cmapEntries;
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GLenum cmapFormat;
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GLubyte *cmap;
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GLubyte *pixels;
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} gliGenericImage;
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typedef struct {
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unsigned char idLength;
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unsigned char colorMapType;
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/* The image type. */
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#define TGA_TYPE_MAPPED 1
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#define TGA_TYPE_COLOR 2
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#define TGA_TYPE_GRAY 3
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#define TGA_TYPE_MAPPED_RLE 9
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#define TGA_TYPE_COLOR_RLE 10
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#define TGA_TYPE_GRAY_RLE 11
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unsigned char imageType;
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/* Color Map Specification. */
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/* We need to separately specify high and low bytes to avoid endianness
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and alignment problems. */
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unsigned char colorMapIndexLo, colorMapIndexHi;
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unsigned char colorMapLengthLo, colorMapLengthHi;
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unsigned char colorMapSize;
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/* Image Specification. */
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unsigned char xOriginLo, xOriginHi;
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unsigned char yOriginLo, yOriginHi;
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unsigned char widthLo, widthHi;
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unsigned char heightLo, heightHi;
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unsigned char bpp;
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/* Image descriptor.
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3-0: attribute bpp
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4: left-to-right ordering
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5: top-to-bottom ordering
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7-6: zero
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*/
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#define TGA_DESC_ABITS 0x0f
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#define TGA_DESC_HORIZONTAL 0x10
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#define TGA_DESC_VERTICAL 0x20
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unsigned char descriptor;
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} TgaHeader;
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typedef struct {
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unsigned int extensionAreaOffset;
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unsigned int developerDirectoryOffset;
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#define TGA_SIGNATURE "TRUEVISION-XFILE"
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char signature[16];
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char dot;
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char null;
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} TgaFooter;
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IGL_INLINE extern gliGenericImage *gliReadTGA(FILE *fp, char *name, int hflip, int vflip);
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IGL_INLINE int gli_verbose(int new_verbose);
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IGL_INLINE extern int gliVerbose(int newVerbose);
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IGL_INLINE void writeTGA( gliGenericImage* image, FILE *fp);
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} // end of igl namespace
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "tga.cpp"
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#endif
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#endif
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