[3341] | 1 | /* |
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| 2 | orxonox - the future of 3D-vertical-scrollers |
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| 3 | |
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| 4 | Copyright (C) 2004 orx |
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| 5 | |
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| 6 | This program is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation; either version 2, or (at your option) |
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| 9 | any later version. |
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| 10 | |
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| 11 | ### File Specific: |
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| 12 | main-programmer: Benjamin Grauer |
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| 13 | co-programmer: ... |
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| 14 | |
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| 15 | TGA-code: borrowed from nehe-Tutorials |
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| 16 | |
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| 17 | */ |
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| 18 | |
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| 19 | |
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| 20 | #include "texture.h" |
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| 21 | |
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| 22 | // headers only for PathList |
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| 23 | #include <unistd.h> |
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| 24 | #include <sys/types.h> |
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| 25 | #include <sys/stat.h> |
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| 26 | #include <stdlib.h> |
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| 27 | #include <fstream> |
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| 28 | |
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| 29 | /** |
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| 30 | \brief creates a ned PathList. |
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| 31 | |
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| 32 | It is a good idea to use this as an initial List, |
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| 33 | because if you give on a name the Path will not be checked for its existence. |
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| 34 | */ |
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| 35 | PathList::PathList() |
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| 36 | { |
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| 37 | this->pathName = NULL; |
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| 38 | this->next = NULL; |
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| 39 | } |
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| 40 | |
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| 41 | /** |
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| 42 | \brief Creates a new PathList with a Name. |
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| 43 | \param pName the Name of The Path. |
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| 44 | |
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| 45 | This function just adds the Path without checking if it exists. |
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| 46 | */ |
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| 47 | PathList::PathList(char* pName) |
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| 48 | { |
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| 49 | this->pathName = new char [strlen(pName)+1]; |
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| 50 | strcpy (this->pathName, pName); |
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| 51 | this->next = NULL; |
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| 52 | } |
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| 53 | |
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| 54 | /** |
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| 55 | \brief destroys a PathList |
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| 56 | |
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| 57 | It does this by deleting the Name and then delete its preceding PathList. |
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| 58 | */ |
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| 59 | PathList::~PathList() |
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| 60 | { |
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| 61 | if (this->pathName) |
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| 62 | delete []this->pathName; |
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| 63 | if (this->next) |
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| 64 | delete this->next; |
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| 65 | } |
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| 66 | |
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| 67 | PathList* PathList::firstPath = NULL; |
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| 68 | |
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| 69 | /** |
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| 70 | \returns A Pointer to the first Path of the Pathlist |
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| 71 | */ |
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| 72 | PathList* PathList::getInstance(void) |
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| 73 | { |
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| 74 | if (firstPath) |
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| 75 | return firstPath; |
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| 76 | firstPath = new PathList(); |
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| 77 | } |
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| 78 | /** |
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| 79 | \brief Adds a new Pathlist Element. |
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| 80 | \param pName |
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| 81 | |
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| 82 | Adding a Path automatically checks if the Path exists, |
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| 83 | and if it does not it will not add it to the List. |
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| 84 | */ |
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| 85 | void PathList::addPath (char* pName) |
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| 86 | { |
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| 87 | if (pName[0] == '\0') |
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| 88 | { |
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[3548] | 89 | PRINTF(2)("not Adding empty Path to the List.\n"); |
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[3341] | 90 | return; |
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| 91 | } |
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| 92 | char* tmpPName = new char[strlen(pName)]; |
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| 93 | strncpy(tmpPName, pName, strlen(pName)-1); |
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| 94 | tmpPName[strlen(pName)-1] = '\0'; |
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| 95 | if (access (tmpPName, F_OK) == 0) |
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| 96 | { |
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| 97 | struct stat status; |
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| 98 | stat(tmpPName, &status); |
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| 99 | if (status.st_mode & S_IFDIR) |
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| 100 | { |
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[3548] | 101 | PRINTF(4)("Adding Path %s to the PathList.\n", pName); |
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[3341] | 102 | PathList* tmpPathList = this; |
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| 103 | while (tmpPathList->next) |
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| 104 | tmpPathList = tmpPathList->next; |
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| 105 | tmpPathList->next = new PathList(pName); |
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| 106 | } |
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| 107 | else |
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| 108 | PRINTF(2)("You tried to add non-folder %s to a PathList.\n", tmpPName); |
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| 109 | } |
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| 110 | else |
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| 111 | PRINTF(2)("You tried to add non-existing folder %s to a PathList.\n", tmpPName); |
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| 112 | delete []tmpPName; |
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| 113 | } |
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| 114 | |
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| 115 | |
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[3344] | 116 | |
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[3341] | 117 | /** |
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[3344] | 118 | \brief Constructor for a Texture |
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| 119 | */ |
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| 120 | Texture::Texture(void) |
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| 121 | { |
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| 122 | this->pImage = new Image; |
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| 123 | this->pImage->data = NULL; |
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[3346] | 124 | this->map = NULL; |
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[3344] | 125 | this->texture = 0; |
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| 126 | } |
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| 127 | |
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| 128 | /** |
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| 129 | \brief Destructor of a Texture |
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| 130 | |
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| 131 | Frees Data, and deletes the textures from GL |
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| 132 | */ |
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| 133 | Texture::~Texture(void) |
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| 134 | { |
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| 135 | if (this->pImage->data) |
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| 136 | delete []this->pImage->data; |
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| 137 | delete pImage; |
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| 138 | if (this->texture) |
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| 139 | glDeleteTextures(1, &this->texture); |
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| 140 | } |
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| 141 | |
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| 142 | /** |
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[3341] | 143 | \brief Searches for a Texture inside one of the defined Paths |
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| 144 | \param texName The name of the texture o search for. |
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| 145 | \returns pathName+texName if texName was found in the pathList. NULL if the Texture is not found. |
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| 146 | */ |
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| 147 | char* Texture::searchTextureInPaths(char* texName) const |
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| 148 | { |
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| 149 | char* tmpName = NULL; |
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| 150 | PathList* pList = PathList::getInstance(); |
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| 151 | while (pList) |
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| 152 | { |
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| 153 | if (pList->pathName) |
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| 154 | { |
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| 155 | tmpName = new char [strlen(pList->pathName)+strlen(texName)+1]; |
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| 156 | strcpy(tmpName, pList->pathName); |
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| 157 | } |
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| 158 | else |
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| 159 | { |
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| 160 | tmpName = new char [strlen(texName)+1]; |
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| 161 | tmpName[0]='\0'; |
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| 162 | } |
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| 163 | strcat(tmpName, texName); |
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| 164 | if (access (tmpName, F_OK) == 0) |
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| 165 | return tmpName; |
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| 166 | |
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| 167 | if (tmpName) |
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| 168 | delete []tmpName; |
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| 169 | tmpName = NULL; |
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| 170 | pList = pList->next; |
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| 171 | } |
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| 172 | return NULL; |
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| 173 | } |
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| 174 | |
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[3344] | 175 | /** |
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| 176 | \brief a Simple function that switches two char values |
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| 177 | \param a The first value |
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| 178 | \param b The second value |
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| 179 | */ |
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[3343] | 180 | inline void Texture::swap (unsigned char &a, unsigned char &b) |
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| 181 | { |
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| 182 | unsigned char temp; |
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| 183 | temp = a; |
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| 184 | a = b; |
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| 185 | b = temp; |
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| 186 | } |
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| 187 | |
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| 188 | |
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[3341] | 189 | /** |
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| 190 | \brief Loads a Texture to the openGL-environment. |
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| 191 | \param pImage The Image to load to openGL |
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| 192 | */ |
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[3344] | 193 | bool Texture::loadTexToGL (Image* pImage) |
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[3341] | 194 | { |
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[3548] | 195 | PRINTF(4)("Loading texture to OpenGL-Environment.\n"); |
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[3344] | 196 | glGenTextures(1, &this->texture); |
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| 197 | glBindTexture(GL_TEXTURE_2D, this->texture); |
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[3341] | 198 | /* not Working, and not needed. |
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| 199 | glTexImage2D( GL_TEXTURE_2D, 0, 3, width, |
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| 200 | height, 0, GL_BGR, |
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| 201 | GL_UNSIGNED_BYTE, map->pixels ); |
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| 202 | */ |
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[3347] | 203 | gluBuild2DMipmaps(GL_TEXTURE_2D, 3, pImage->width, pImage->height, pImage->format, GL_UNSIGNED_BYTE, pImage->data); |
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[3341] | 204 | |
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| 205 | glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_NEAREST); |
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| 206 | glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR_MIPMAP_LINEAR); |
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| 207 | } |
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| 208 | |
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| 209 | |
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| 210 | #ifdef HAVE_SDL_SDL_IMAGE_H |
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[3344] | 211 | bool Texture::loadImage(char* imageName) |
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[3341] | 212 | { |
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| 213 | char* imgNameWithPath = searchTextureInPaths(imageName); |
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| 214 | if (imgNameWithPath) |
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| 215 | { |
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[3346] | 216 | this->map=IMG_Load(imgNameWithPath); |
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[3341] | 217 | if(!map) |
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| 218 | { |
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| 219 | PRINTF(1)("IMG_Load: %s\n", IMG_GetError()); |
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| 220 | return false; |
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| 221 | } |
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| 222 | pImage->height = map->h; |
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| 223 | pImage->width = map->w; |
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| 224 | pImage->data = (GLubyte*)map->pixels; |
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[3347] | 225 | pImage->bpp = map->format->BytesPerPixel; |
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| 226 | if (pImage->bpp == 3) |
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| 227 | pImage->format = GL_RGB; |
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| 228 | else if (pImage->bpp == 4) |
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| 229 | pImage->format = GL_RGBA; |
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| 230 | |
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[3341] | 231 | if( !IMG_isPNG(SDL_RWFromFile(imgNameWithPath, "rb")) && !IMG_isJPG(SDL_RWFromFile(imgNameWithPath, "rb"))) |
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| 232 | for (int i=0;i<map->h * map->w *3;i+=3) |
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| 233 | { |
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| 234 | GLuint temp = pImage->data[i]; |
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| 235 | pImage->data[i] = pImage->data[i+2]; |
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| 236 | pImage->data[i+2] = temp; |
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| 237 | } |
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[3343] | 238 | /* this is the real swapping algorithm */ |
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| 239 | for( int i = 0 ; i < (pImage->height / 2) ; ++i ) |
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| 240 | for( int j = 0 ; j < pImage->width * pImage->bpp; j += pImage->bpp ) |
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| 241 | for(int k = 0; k < pImage->bpp; ++k) |
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| 242 | swap( pImage->data[ (i * pImage->width * pImage->bpp) + j + k], pImage->data[ ( (pImage->height - i - 1) * pImage->width * pImage->bpp ) + j + k]); |
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| 243 | |
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[3344] | 244 | this->loadTexToGL (this->pImage); |
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[3346] | 245 | SDL_FreeSurface(map); |
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| 246 | this->pImage->data = NULL; |
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[3341] | 247 | } |
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| 248 | else |
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| 249 | { |
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[3548] | 250 | PRINTF(2)("Image not Found: %s\n", imgNameWithPath); |
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[3341] | 251 | return false; |
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| 252 | } |
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| 253 | } |
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| 254 | |
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| 255 | |
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| 256 | #else /* HAVE_SDL_SDL_IMAGE_H */ |
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| 257 | /** |
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| 258 | \brief Makes the Programm ready to Read-in a texture-File |
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| 259 | 1. Checks what type of Image should be imported |
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[3454] | 260 | \todo Checks where to find the Image |
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[3341] | 261 | */ |
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[3344] | 262 | bool Texture::loadImage(char* imageName) |
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[3341] | 263 | { |
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| 264 | char* imgNameWithPath = searchTextureInPaths(imageName); |
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| 265 | if (imgNameWithPath) |
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| 266 | { |
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| 267 | if (!strncmp(imgNameWithPath+strlen(imgNameWithPath)-4, ".bmp", 4)) |
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| 268 | { |
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[3548] | 269 | PRINTF(4)("Requested bmp-image. Trying to Import.\n"); |
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[3344] | 270 | return this->loadBMP(imgNameWithPath); |
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[3341] | 271 | } |
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| 272 | |
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| 273 | else if (!strncmp(imgNameWithPath+strlen(imgNameWithPath)-4, ".jpg", 4) || !strncmp(imgNameWithPath+strlen(imgNameWithPath)-5, ".jpg", 5)) |
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| 274 | { |
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[3548] | 275 | PRINTF(4)("Requested jpeg-image. Trying to Import\n"); |
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[3344] | 276 | return this->loadJPG(imgNameWithPath); |
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[3341] | 277 | } |
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| 278 | else if (!strncmp(imgNameWithPath+strlen(imgNameWithPath)-4, ".tga", 4)) |
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| 279 | { |
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[3548] | 280 | PRINTF(4)("Requested tga-image. Trying to Import\n"); |
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[3344] | 281 | return this->loadTGA(imgNameWithPath); |
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[3341] | 282 | } |
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| 283 | else if (!strncmp(imgNameWithPath+strlen(imgNameWithPath)-4, ".png", 4)) |
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| 284 | { |
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[3548] | 285 | PRINTF(4)("Requested png-image. Trying to Import\n"); |
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[3344] | 286 | return this->loadPNG(imgNameWithPath); |
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[3341] | 287 | } |
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| 288 | else |
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| 289 | { |
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[3548] | 290 | PRINTF(2)("Requested Image was not recognized in its type. (Maybe a type-Cast-error.)\n FileName: %s", imgNameWithPath); |
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[3341] | 291 | return false; |
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| 292 | } |
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| 293 | } |
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| 294 | else |
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| 295 | { |
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[3548] | 296 | PRINTF(2)("Image not Found: %s\n", imgNameWithPath); |
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[3341] | 297 | return false; |
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| 298 | } |
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| 299 | } |
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| 300 | |
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| 301 | /** |
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| 302 | \brief reads in a Windows BMP-file, and imports it to openGL. |
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| 303 | \param bmpName The name of the Image to load. |
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| 304 | */ |
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[3344] | 305 | bool Texture::loadBMP (char* bmpName) |
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[3341] | 306 | { |
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| 307 | FILE *file; |
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| 308 | unsigned long size; // size of the image in bytes. |
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| 309 | unsigned long i; // standard counter. |
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| 310 | unsigned short int planes; // number of planes in image (must be 1) |
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| 311 | unsigned short int bpp; // number of bits per pixel (must be 24) |
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| 312 | GLuint temp; // temporary color storage for bgr-rgb conversion. |
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| 313 | |
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| 314 | // make sure the file is there. |
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| 315 | if ((file = fopen(bmpName, "rb"))==NULL) |
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| 316 | { |
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[3548] | 317 | PRINTF(2)("File Not Found : %s\n",bmpName); |
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[3341] | 318 | return false; |
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| 319 | } |
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| 320 | // seek through the bmp header, up to the width/height: |
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| 321 | fseek(file, 18, SEEK_CUR); |
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| 322 | |
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| 323 | // read the width |
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| 324 | if ((i = fread(&pImage->width, 4, 1, file)) != 1) |
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| 325 | { |
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[3548] | 326 | PRINTF(2)("Error reading width from %s.\n", bmpName); |
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[3341] | 327 | return false; |
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| 328 | } |
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| 329 | // read the height |
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| 330 | if ((i = fread(&pImage->height, 4, 1, file)) != 1) |
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| 331 | { |
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[3548] | 332 | PRINTF(2)("Error reading height from %s.\n", bmpName); |
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[3341] | 333 | return false; |
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| 334 | } |
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| 335 | |
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| 336 | // calculate the size (assuming 24 bits or 3 bytes per pixel). |
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| 337 | size = pImage->width * pImage->height * 3; |
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| 338 | |
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| 339 | // read the planes |
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| 340 | if ((fread(&planes, 2, 1, file)) != 1) |
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| 341 | { |
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[3548] | 342 | PRINTF(2)("Error reading planes from %s.\n", bmpName); |
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[3341] | 343 | return false; |
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| 344 | } |
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| 345 | if (planes != 1) |
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| 346 | { |
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| 347 | PRINTF(1)("Planes from %s is not 1: %u\n", bmpName, planes); |
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| 348 | return false; |
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| 349 | } |
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| 350 | |
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| 351 | // read the bpp |
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| 352 | if ((i = fread(&bpp, 2, 1, file)) != 1) |
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| 353 | { |
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[3548] | 354 | PRINTF(2)("Error reading bpp from %s.\n", bmpName); |
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[3341] | 355 | return false; |
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| 356 | } |
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| 357 | if (bpp != 24) |
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| 358 | { |
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[3548] | 359 | PRINTF(2)("Bpp from %s is not 24: %u\n", bmpName, bpp); |
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[3341] | 360 | return false; |
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| 361 | } |
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| 362 | |
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| 363 | // seek past the rest of the bitmap header. |
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| 364 | fseek(file, 24, SEEK_CUR); |
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| 365 | |
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| 366 | // read the data. |
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| 367 | pImage->data = (GLubyte *) malloc(size); |
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| 368 | if (pImage->data == NULL) |
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| 369 | { |
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[3548] | 370 | PRINTF(2)("Error allocating memory for color-corrected image data"); |
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[3341] | 371 | return false; |
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| 372 | } |
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| 373 | |
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| 374 | if ((i = fread(pImage->data, size, 1, file)) != 1) |
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| 375 | { |
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[3548] | 376 | PRINTF(2)("Error reading image data from %s.\n", bmpName); |
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[3341] | 377 | return false; |
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| 378 | } |
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| 379 | fclose(file); |
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| 380 | |
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| 381 | // reverse all of the colors. (bgr -> rgb) |
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| 382 | for (i=0;i<size;i+=3) |
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| 383 | { |
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| 384 | temp = pImage->data[i]; |
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| 385 | pImage->data[i] = pImage->data[i+2]; |
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| 386 | pImage->data[i+2] = temp; |
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| 387 | } |
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[3344] | 388 | this->loadTexToGL (pImage); |
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[3341] | 389 | |
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| 390 | |
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| 391 | if (pImage) |
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| 392 | { |
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| 393 | if (pImage->data) |
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| 394 | { |
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| 395 | free(pImage->data); |
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| 396 | } |
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| 397 | |
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| 398 | free(pImage); |
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| 399 | } |
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| 400 | return true; |
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| 401 | |
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| 402 | } |
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| 403 | |
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| 404 | /** |
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| 405 | \brief reads in a jpg-file |
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| 406 | \param jpgName the Name of the Image to load |
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| 407 | */ |
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[3344] | 408 | bool Texture::loadJPG (char* jpgName) |
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[3341] | 409 | { |
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| 410 | #ifdef HAVE_JPEGLIB_H |
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| 411 | struct jpeg_decompress_struct cinfo; |
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| 412 | Image *pImage = NULL; |
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| 413 | FILE *pFile; |
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| 414 | |
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| 415 | // Open a file pointer to the jpeg file and check if it was found and opened |
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| 416 | if((pFile = fopen(jpgName, "rb")) == NULL) |
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| 417 | { |
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| 418 | // Display an error message saying the file was not found, then return NULL |
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[3548] | 419 | PRINTF(2)("Unable to load JPG File %s.\n", jpgName); |
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[3341] | 420 | return false; |
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| 421 | } |
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| 422 | |
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| 423 | // Create an error handler |
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| 424 | jpeg_error_mgr jerr; |
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| 425 | |
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| 426 | // Have our compression info object point to the error handler address |
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| 427 | cinfo.err = jpeg_std_error(&jerr); |
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| 428 | |
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| 429 | // Initialize the decompression object |
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| 430 | jpeg_create_decompress(&cinfo); |
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| 431 | |
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| 432 | // Specify the data source (Our file pointer) |
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| 433 | jpeg_stdio_src(&cinfo, pFile); |
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| 434 | |
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| 435 | // Allocate the structure that will hold our eventual jpeg data (must free it!) |
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| 436 | pImage = (Image*)malloc(sizeof(Image)); |
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| 437 | |
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| 438 | // DECOFING |
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| 439 | // Read in the header of the jpeg file |
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| 440 | jpeg_read_header(&cinfo, TRUE); |
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| 441 | |
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| 442 | // Start to decompress the jpeg file with our compression info |
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| 443 | jpeg_start_decompress(&cinfo); |
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| 444 | |
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| 445 | // Get the image dimensions and row span to read in the pixel data |
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| 446 | pImage->rowSpan = cinfo.image_width * cinfo.num_components; |
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| 447 | pImage->width = cinfo.image_width; |
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| 448 | pImage->height = cinfo.image_height; |
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| 449 | |
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| 450 | // Allocate memory for the pixel buffer |
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| 451 | pImage->data = new unsigned char[pImage->rowSpan * pImage->height]; |
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| 452 | |
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| 453 | // Here we use the library's state variable cinfo.output_scanline as the |
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| 454 | // loop counter, so that we don't have to keep track ourselves. |
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| 455 | |
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| 456 | // Create an array of row pointers |
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| 457 | unsigned char** rowPtr = new unsigned char*[pImage->height]; |
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| 458 | for (int i = 0; i < pImage->height; i++) |
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| 459 | rowPtr[i] = &(pImage->data[i*pImage->rowSpan]); |
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| 460 | |
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| 461 | // Now comes the juice of our work, here we extract all the pixel data |
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| 462 | int rowsRead = 0; |
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| 463 | while (cinfo.output_scanline < cinfo.output_height) |
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| 464 | { |
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| 465 | // Read in the current row of pixels and increase the rowsRead count |
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| 466 | rowsRead += jpeg_read_scanlines(&cinfo, &rowPtr[rowsRead], cinfo.output_height - rowsRead); |
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| 467 | } |
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| 468 | |
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| 469 | // Delete the temporary row pointers |
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| 470 | delete [] rowPtr; |
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| 471 | |
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| 472 | // Finish decompressing the data |
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| 473 | jpeg_finish_decompress(&cinfo);// decodeJPG(&cinfo, pImage); |
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| 474 | |
---|
| 475 | // This releases all the stored memory for reading and decoding the jpeg |
---|
| 476 | jpeg_destroy_decompress(&cinfo); |
---|
| 477 | |
---|
| 478 | // Close the file pointer that opened the file |
---|
| 479 | fclose(pFile); |
---|
| 480 | |
---|
| 481 | |
---|
| 482 | if(pImage == NULL) |
---|
| 483 | exit(0); |
---|
| 484 | |
---|
[3344] | 485 | this->loadTexToGL (pImage); |
---|
[3341] | 486 | if (pImage) |
---|
| 487 | { |
---|
| 488 | if (pImage->data) |
---|
| 489 | { |
---|
| 490 | free(pImage->data); |
---|
| 491 | } |
---|
| 492 | |
---|
| 493 | free(pImage); |
---|
| 494 | } |
---|
| 495 | return true; |
---|
| 496 | #else /* HAVE_JPEGLIB_H */ |
---|
| 497 | PRINTF(1)("sorry, but you did not compile with jpeg-support.\nEither install SDL_image or jpeglib, and recompile to see the image\n"); |
---|
| 498 | return false; |
---|
| 499 | #endif /* HAVE_JPEGLIB_H */ |
---|
| 500 | |
---|
| 501 | } |
---|
| 502 | |
---|
| 503 | /** |
---|
| 504 | \brief reads in a tga-file |
---|
| 505 | \param tgaName the Name of the Image to load |
---|
| 506 | */ |
---|
[3344] | 507 | bool Texture::loadTGA(const char * tgaName) |
---|
[3341] | 508 | { |
---|
| 509 | typedef struct |
---|
| 510 | { |
---|
| 511 | GLubyte Header[12]; |
---|
| 512 | } TGAHeader; |
---|
| 513 | TGAHeader tgaHeader; |
---|
| 514 | |
---|
| 515 | GLubyte uTGAcompare[12] = {0,0,2, 0,0,0,0,0,0,0,0,0}; // Uncompressed TGA Header |
---|
| 516 | GLubyte cTGAcompare[12] = {0,0,10,0,0,0,0,0,0,0,0,0}; // Compressed TGA Header |
---|
| 517 | FILE * fTGA; |
---|
| 518 | fTGA = fopen(tgaName, "rb"); |
---|
| 519 | |
---|
| 520 | if(fTGA == NULL) |
---|
| 521 | { |
---|
[3548] | 522 | PRINTF(2)("Error could not open texture file: %s\n", tgaName); |
---|
[3341] | 523 | return false; |
---|
| 524 | } |
---|
| 525 | |
---|
| 526 | if(fread(&tgaHeader, sizeof(TGAHeader), 1, fTGA) == 0) |
---|
| 527 | { |
---|
[3548] | 528 | PRINTF(2)("Error could not read file header of %s\n", tgaName); |
---|
[3341] | 529 | if(fTGA != NULL) |
---|
| 530 | { |
---|
| 531 | fclose(fTGA); |
---|
| 532 | } |
---|
| 533 | return false; |
---|
| 534 | } |
---|
| 535 | |
---|
| 536 | if(memcmp(uTGAcompare, &tgaHeader, sizeof(TGAHeader)) == 0) |
---|
| 537 | { |
---|
[3344] | 538 | loadUncompressedTGA(tgaName, fTGA); |
---|
[3341] | 539 | if (fTGA) |
---|
| 540 | fclose (fTGA); |
---|
| 541 | } |
---|
| 542 | else if(memcmp(cTGAcompare, &tgaHeader, sizeof(TGAHeader)) == 0) |
---|
| 543 | { |
---|
[3344] | 544 | loadCompressedTGA(tgaName, fTGA); |
---|
[3341] | 545 | if (fTGA) |
---|
| 546 | fclose (fTGA); |
---|
| 547 | } |
---|
| 548 | else |
---|
| 549 | { |
---|
[3548] | 550 | PRINTF(2)("Error TGA file be type 2 or type 10\n"); |
---|
[3341] | 551 | if (fTGA) |
---|
| 552 | fclose(fTGA); |
---|
| 553 | return false; |
---|
| 554 | } |
---|
| 555 | return true; |
---|
| 556 | } |
---|
| 557 | |
---|
| 558 | /** |
---|
| 559 | \brief reads in an uncompressed tga-file |
---|
| 560 | \param filename the Name of the Image to load |
---|
| 561 | \param fTGA a Pointer to a File, that should be read |
---|
| 562 | */ |
---|
[3344] | 563 | bool Texture::loadUncompressedTGA(const char * filename, FILE * fTGA) |
---|
[3341] | 564 | { |
---|
| 565 | GLubyte header[6]; // First 6 Useful Bytes From The Header |
---|
| 566 | GLuint bytesPerPixel; // Holds Number Of Bytes Per Pixel Used In The TGA File |
---|
| 567 | GLuint imageSize; // Used To Store The Image Size When Setting Aside Ram |
---|
| 568 | GLuint temp; // Temporary Variable |
---|
| 569 | GLuint type; |
---|
| 570 | GLuint Height; // Height of Image |
---|
| 571 | GLuint Width; // Width of Image |
---|
| 572 | GLuint Bpp; // Bits Per Pixel |
---|
| 573 | |
---|
| 574 | GLuint cswap; |
---|
| 575 | if(fread(header, sizeof(header), 1, fTGA) == 0) |
---|
| 576 | { |
---|
[3548] | 577 | PRINTF(2)("Error could not read info header\n"); |
---|
[3341] | 578 | return false; |
---|
| 579 | } |
---|
| 580 | |
---|
| 581 | Width = pImage->width = header[1] * 256 + header[0]; |
---|
| 582 | Height = pImage->height = header[3] * 256 + header[2]; |
---|
| 583 | Bpp = pImage->bpp = header[4]; |
---|
| 584 | // Make sure all information is valid |
---|
| 585 | if((pImage->width <= 0) || (pImage->height <= 0) || ((pImage->bpp != 24) && (pImage->bpp !=32))) |
---|
| 586 | { |
---|
[3548] | 587 | PRINTF(2)("Error invalid texture information\n"); |
---|
[3341] | 588 | return false; |
---|
| 589 | } |
---|
| 590 | |
---|
| 591 | if(pImage->bpp == 24) |
---|
| 592 | { |
---|
| 593 | pImage->type = GL_RGB; |
---|
| 594 | } |
---|
| 595 | else |
---|
| 596 | { |
---|
| 597 | pImage->type = GL_RGBA; |
---|
| 598 | } |
---|
| 599 | |
---|
| 600 | bytesPerPixel = (Bpp / 8); |
---|
| 601 | imageSize = (bytesPerPixel * Width * Height); |
---|
| 602 | pImage->data = (GLubyte*) malloc(imageSize); |
---|
| 603 | |
---|
| 604 | if(pImage->data == NULL) |
---|
| 605 | { |
---|
[3548] | 606 | PRINTF(2)("Error could not allocate memory for image\n"); |
---|
[3341] | 607 | return false; |
---|
| 608 | } |
---|
| 609 | |
---|
| 610 | if(fread(pImage->data, 1, imageSize, fTGA) != imageSize) |
---|
| 611 | { |
---|
[3548] | 612 | PRINTF(2)("Error could not read image data\n"); |
---|
[3341] | 613 | if(pImage->data != NULL) |
---|
| 614 | { |
---|
| 615 | free(pImage->data); |
---|
| 616 | } |
---|
| 617 | return false; |
---|
| 618 | } |
---|
| 619 | |
---|
| 620 | for(cswap = 0; cswap < (int)imageSize; cswap += bytesPerPixel) |
---|
| 621 | { |
---|
| 622 | pImage->data[cswap] ^= pImage->data[cswap+2] ^= |
---|
| 623 | pImage->data[cswap] ^= pImage->data[cswap+2]; |
---|
| 624 | } |
---|
| 625 | |
---|
[3344] | 626 | this->loadTexToGL (pImage); |
---|
[3341] | 627 | |
---|
| 628 | return true; |
---|
| 629 | } |
---|
| 630 | |
---|
| 631 | /** |
---|
| 632 | \brief reads in a compressed tga-file |
---|
| 633 | \param filename the Name of the Image to load |
---|
| 634 | \param fTGA a Pointer to a File, that should be read |
---|
| 635 | */ |
---|
[3344] | 636 | bool Texture::loadCompressedTGA(const char * filename, FILE * fTGA) |
---|
[3341] | 637 | { |
---|
| 638 | GLubyte header[6]; // First 6 Useful Bytes From The Header |
---|
| 639 | GLuint bytesPerPixel; // Holds Number Of Bytes Per Pixel Used In The TGA File |
---|
| 640 | GLuint imageSize; // Used To Store The Image Size When Setting Aside Ram |
---|
| 641 | GLuint temp; // Temporary Variable |
---|
| 642 | GLuint type; |
---|
| 643 | GLuint Height; // Height of Image |
---|
| 644 | GLuint Width; // Width of Image |
---|
| 645 | GLuint Bpp; // Bits Per Pixel |
---|
| 646 | |
---|
| 647 | if(fread(header, sizeof(header), 1, fTGA) == 0) |
---|
| 648 | { |
---|
[3548] | 649 | PRINTF(2)("Error could not read info header\n"); |
---|
[3341] | 650 | return false; |
---|
| 651 | } |
---|
| 652 | |
---|
| 653 | Width = pImage->width = header[1] * 256 + header[0]; |
---|
| 654 | Height = pImage->height = header[3] * 256 + header[2]; |
---|
| 655 | Bpp = pImage->bpp = header[4]; |
---|
| 656 | |
---|
| 657 | GLuint pixelcount = Height * Width; |
---|
| 658 | GLuint currentpixel = 0; |
---|
| 659 | GLuint currentbyte = 0; |
---|
| 660 | GLubyte * colorbuffer = (GLubyte *)malloc(bytesPerPixel); |
---|
| 661 | |
---|
| 662 | //Make sure all pImage info is ok |
---|
| 663 | if((pImage->width <= 0) || (pImage->height <= 0) || ((pImage->bpp != 24) && (pImage->bpp !=32))) |
---|
| 664 | { |
---|
[3548] | 665 | PRINTF(2)("Error Invalid pImage information\n"); |
---|
[3341] | 666 | return false; |
---|
| 667 | } |
---|
| 668 | |
---|
| 669 | bytesPerPixel = (Bpp / 8); |
---|
| 670 | imageSize = (bytesPerPixel * Width * Height); |
---|
| 671 | pImage->data = (GLubyte*) malloc(imageSize); |
---|
| 672 | |
---|
| 673 | if(pImage->data == NULL) |
---|
| 674 | { |
---|
[3548] | 675 | PRINTF(2)("Error could not allocate memory for image\n"); |
---|
[3341] | 676 | return false; |
---|
| 677 | } |
---|
| 678 | |
---|
| 679 | do |
---|
| 680 | { |
---|
| 681 | GLubyte chunkheader = 0; |
---|
| 682 | |
---|
| 683 | if(fread(&chunkheader, sizeof(GLubyte), 1, fTGA) == 0) |
---|
| 684 | { |
---|
[3548] | 685 | PRINTF(2)("Error could not read RLE header\n"); |
---|
[3341] | 686 | if(pImage->data != NULL) |
---|
| 687 | { |
---|
| 688 | free(pImage->data); |
---|
| 689 | } |
---|
| 690 | return false; |
---|
| 691 | } |
---|
| 692 | // If the ehader is < 128, it means the that is the number of RAW color packets minus 1 |
---|
| 693 | if(chunkheader < 128) |
---|
| 694 | { |
---|
| 695 | short counter; |
---|
| 696 | chunkheader++; |
---|
| 697 | // Read RAW color values |
---|
| 698 | for(counter = 0; counter < chunkheader; counter++) |
---|
| 699 | { |
---|
| 700 | // Try to read 1 pixel |
---|
| 701 | if(fread(colorbuffer, 1, bytesPerPixel, fTGA) != bytesPerPixel) |
---|
| 702 | { |
---|
[3548] | 703 | PRINTF(2)("Error could not read image data\n"); |
---|
[3341] | 704 | if(colorbuffer != NULL) |
---|
| 705 | { |
---|
| 706 | free(colorbuffer); |
---|
| 707 | } |
---|
| 708 | |
---|
| 709 | if(pImage->data != NULL) |
---|
| 710 | { |
---|
| 711 | free(pImage->data); |
---|
| 712 | } |
---|
| 713 | |
---|
| 714 | return false; |
---|
| 715 | } |
---|
| 716 | // write to memory |
---|
| 717 | // Flip R and B vcolor values around in the process |
---|
| 718 | pImage->data[currentbyte ] = colorbuffer[2]; |
---|
| 719 | pImage->data[currentbyte + 1] = colorbuffer[1]; |
---|
| 720 | pImage->data[currentbyte + 2] = colorbuffer[0]; |
---|
| 721 | |
---|
| 722 | if(bytesPerPixel == 4) // if its a 32 bpp image |
---|
| 723 | { |
---|
| 724 | pImage->data[currentbyte + 3] = colorbuffer[3];// copy the 4th byte |
---|
| 725 | } |
---|
| 726 | |
---|
| 727 | currentbyte += bytesPerPixel; |
---|
| 728 | currentpixel++; |
---|
| 729 | |
---|
| 730 | // Make sure we haven't read too many pixels |
---|
| 731 | if(currentpixel > pixelcount) |
---|
| 732 | { |
---|
[3548] | 733 | PRINTF(2)("Error too many pixels read\n"); |
---|
[3341] | 734 | if(colorbuffer != NULL) |
---|
| 735 | { |
---|
| 736 | free(colorbuffer); |
---|
| 737 | } |
---|
| 738 | |
---|
| 739 | if(pImage->data != NULL) |
---|
| 740 | { |
---|
| 741 | free(pImage->data); |
---|
| 742 | } |
---|
| 743 | |
---|
| 744 | return false; |
---|
| 745 | } |
---|
| 746 | } |
---|
| 747 | } |
---|
| 748 | // chunkheader > 128 RLE data, next color reapeated chunkheader - 127 times |
---|
| 749 | else |
---|
| 750 | { |
---|
| 751 | short counter; |
---|
| 752 | chunkheader -= 127; // Subteact 127 to get rid of the ID bit |
---|
| 753 | if(fread(colorbuffer, 1, bytesPerPixel, fTGA) != bytesPerPixel) // Attempt to read following color values |
---|
| 754 | { |
---|
[3548] | 755 | PRINTF(2)("Error could not read from file"); |
---|
[3341] | 756 | if(colorbuffer != NULL) |
---|
| 757 | { |
---|
| 758 | free(colorbuffer); |
---|
| 759 | } |
---|
| 760 | |
---|
| 761 | if(pImage->data != NULL) |
---|
| 762 | { |
---|
| 763 | free(pImage->data); |
---|
| 764 | } |
---|
| 765 | |
---|
| 766 | return false; |
---|
| 767 | } |
---|
| 768 | |
---|
| 769 | for(counter = 0; counter < chunkheader; counter++) //copy the color into the image data as many times as dictated |
---|
| 770 | { |
---|
| 771 | // switch R and B bytes areound while copying |
---|
| 772 | pImage->data[currentbyte ] = colorbuffer[2]; |
---|
| 773 | pImage->data[currentbyte + 1] = colorbuffer[1]; |
---|
| 774 | pImage->data[currentbyte + 2] = colorbuffer[0]; |
---|
| 775 | |
---|
| 776 | if(bytesPerPixel == 4) |
---|
| 777 | { |
---|
| 778 | pImage->data[currentbyte + 3] = colorbuffer[3]; |
---|
| 779 | } |
---|
| 780 | |
---|
| 781 | currentbyte += bytesPerPixel; |
---|
| 782 | currentpixel++; |
---|
| 783 | |
---|
| 784 | if(currentpixel > pixelcount) |
---|
| 785 | { |
---|
[3548] | 786 | PRINTF(2)("Error too many pixels read\n"); |
---|
[3341] | 787 | if(colorbuffer != NULL) |
---|
| 788 | { |
---|
| 789 | free(colorbuffer); |
---|
| 790 | } |
---|
| 791 | |
---|
| 792 | if(pImage->data != NULL) |
---|
| 793 | { |
---|
| 794 | free(pImage->data); |
---|
| 795 | } |
---|
| 796 | |
---|
| 797 | return false; |
---|
| 798 | } |
---|
| 799 | } |
---|
| 800 | } |
---|
| 801 | } |
---|
| 802 | |
---|
| 803 | while(currentpixel < pixelcount); // Loop while there are still pixels left |
---|
| 804 | |
---|
[3344] | 805 | this->loadTexToGL (pImage); |
---|
[3341] | 806 | |
---|
| 807 | return true; |
---|
| 808 | } |
---|
| 809 | |
---|
| 810 | |
---|
| 811 | /** |
---|
| 812 | \brief reads in a png-file |
---|
| 813 | \param pngName the Name of the Image to load |
---|
| 814 | */ |
---|
[3344] | 815 | bool Texture::loadPNG(const char* pngName) |
---|
[3341] | 816 | { |
---|
| 817 | #ifdef HAVE_PNG_H |
---|
| 818 | |
---|
| 819 | FILE *PNG_file = fopen(pngName, "rb"); |
---|
| 820 | if (PNG_file == NULL) |
---|
| 821 | { |
---|
| 822 | return 0; |
---|
| 823 | } |
---|
| 824 | |
---|
| 825 | GLubyte PNG_header[8]; |
---|
| 826 | |
---|
| 827 | fread(PNG_header, 1, 8, PNG_file); |
---|
| 828 | if (png_sig_cmp(PNG_header, 0, 8) != 0) |
---|
| 829 | { |
---|
| 830 | PRINTF(2)("Not Recognized as a pngFile\n"); |
---|
| 831 | fclose (PNG_file); |
---|
| 832 | return 0; |
---|
| 833 | } |
---|
| 834 | |
---|
| 835 | png_structp PNG_reader = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); |
---|
| 836 | if (PNG_reader == NULL) |
---|
| 837 | { |
---|
| 838 | fclose(PNG_file); |
---|
| 839 | return 0; |
---|
| 840 | } |
---|
| 841 | |
---|
| 842 | png_infop PNG_info = png_create_info_struct(PNG_reader); |
---|
| 843 | if (PNG_info == NULL) |
---|
| 844 | { |
---|
| 845 | png_destroy_read_struct(&PNG_reader, NULL, NULL); |
---|
| 846 | fclose(PNG_file); |
---|
| 847 | return 0; |
---|
| 848 | } |
---|
| 849 | |
---|
| 850 | png_infop PNG_end_info = png_create_info_struct(PNG_reader); |
---|
| 851 | if (PNG_end_info == NULL) |
---|
| 852 | { |
---|
| 853 | png_destroy_read_struct(&PNG_reader, &PNG_info, NULL); |
---|
| 854 | fclose(PNG_file); |
---|
| 855 | return 0; |
---|
| 856 | } |
---|
| 857 | |
---|
| 858 | if (setjmp(png_jmpbuf(PNG_reader))) |
---|
| 859 | { |
---|
| 860 | png_destroy_read_struct(&PNG_reader, &PNG_info, &PNG_end_info); |
---|
| 861 | fclose(PNG_file); |
---|
| 862 | return (0); |
---|
| 863 | } |
---|
| 864 | |
---|
| 865 | png_init_io(PNG_reader, PNG_file); |
---|
| 866 | png_set_sig_bytes(PNG_reader, 8); |
---|
| 867 | |
---|
| 868 | png_read_info(PNG_reader, PNG_info); |
---|
| 869 | |
---|
| 870 | pImage->width = png_get_image_width(PNG_reader, PNG_info); |
---|
| 871 | pImage->height = png_get_image_height(PNG_reader, PNG_info); |
---|
| 872 | |
---|
| 873 | png_uint_32 bit_depth, color_type; |
---|
| 874 | bit_depth = png_get_bit_depth(PNG_reader, PNG_info); |
---|
| 875 | color_type = png_get_color_type(PNG_reader, PNG_info); |
---|
| 876 | |
---|
| 877 | if (color_type == PNG_COLOR_TYPE_PALETTE) |
---|
| 878 | { |
---|
| 879 | png_set_palette_to_rgb(PNG_reader); |
---|
| 880 | } |
---|
| 881 | |
---|
| 882 | if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8) |
---|
| 883 | { |
---|
| 884 | png_set_gray_1_2_4_to_8(PNG_reader); |
---|
| 885 | } |
---|
| 886 | |
---|
| 887 | if (color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_GRAY_ALPHA) |
---|
| 888 | { |
---|
| 889 | png_set_gray_to_rgb(PNG_reader); |
---|
| 890 | } |
---|
| 891 | |
---|
| 892 | if (png_get_valid(PNG_reader, PNG_info, PNG_INFO_tRNS)) |
---|
| 893 | { |
---|
| 894 | png_set_tRNS_to_alpha(PNG_reader); |
---|
| 895 | } |
---|
| 896 | else |
---|
| 897 | { |
---|
| 898 | png_set_filler(PNG_reader, 0xff, PNG_FILLER_AFTER); |
---|
| 899 | } |
---|
| 900 | |
---|
| 901 | if (bit_depth == 16) |
---|
| 902 | { |
---|
| 903 | png_set_strip_16(PNG_reader); |
---|
| 904 | } |
---|
| 905 | |
---|
| 906 | png_read_update_info(PNG_reader, PNG_info); |
---|
| 907 | |
---|
| 908 | pImage->data = (png_byte*)malloc(4 * pImage->width * pImage->height); |
---|
| 909 | png_byte** PNG_rows = (png_byte**)malloc(pImage->height * sizeof(png_byte*)); |
---|
| 910 | |
---|
| 911 | unsigned int row; |
---|
| 912 | for (row = 0; row < pImage->height; ++row) |
---|
| 913 | { |
---|
| 914 | PNG_rows[pImage->height - 1 - row] = pImage->data + (row * 4 * pImage->width); |
---|
| 915 | } |
---|
| 916 | |
---|
| 917 | png_read_image(PNG_reader, PNG_rows); |
---|
| 918 | |
---|
| 919 | free(PNG_rows); |
---|
| 920 | |
---|
| 921 | png_destroy_read_struct(&PNG_reader, &PNG_info, &PNG_end_info); |
---|
| 922 | fclose(PNG_file); |
---|
| 923 | |
---|
| 924 | /* if (!ST_is_power_of_two(pImage->width) || !ST_is_power_of_two(pImage->height)) |
---|
| 925 | { |
---|
| 926 | free(pImage->data); |
---|
| 927 | return 0; |
---|
| 928 | } |
---|
| 929 | */ |
---|
[3344] | 930 | this->loadTexToGL (pImage); |
---|
[3341] | 931 | |
---|
| 932 | free(pImage->data); |
---|
| 933 | |
---|
| 934 | return true; |
---|
| 935 | #else /* HAVE_PNG_H */ |
---|
| 936 | PRINTF(1)("sorry, but you did not compile with png-support.\nEither install SDL_image or libpng, and recompile to see the image\n"); |
---|
| 937 | return false; |
---|
| 938 | #endif /* HAVE_PNG_H */ |
---|
| 939 | |
---|
| 940 | } |
---|
| 941 | #endif /* HAVE_SDL_SDL_IMAGE_H */ |
---|