From b829170121d3657369904ec62d8065606777a9ce Mon Sep 17 00:00:00 2001 From: Aki Date: Fri, 1 Oct 2021 18:54:04 +0200 Subject: Removed doxygen generated docs They can be rebuild anytime and are considered a build artifact/binary. --- Doc/doxygen/html/_png_image_8cpp_source.html | 372 --------------------------- 1 file changed, 372 deletions(-) delete mode 100644 Doc/doxygen/html/_png_image_8cpp_source.html (limited to 'Doc/doxygen/html/_png_image_8cpp_source.html') diff --git a/Doc/doxygen/html/_png_image_8cpp_source.html b/Doc/doxygen/html/_png_image_8cpp_source.html deleted file mode 100644 index ce12c17..0000000 --- a/Doc/doxygen/html/_png_image_8cpp_source.html +++ /dev/null @@ -1,372 +0,0 @@ - - - - - -Starshatter_Open: D:/SRC/StarshatterSVN/nGenEx/PngImage.cpp Source File - - - - - - - - - - - - - -
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Open source Starshatter engine
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PngImage.cpp
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-Go to the documentation of this file.
1 /* Project nGenEx
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2  Destroyer Studios LLC
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3  Copyright © 1997-2004. All Rights Reserved.
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4 
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5  SUBSYSTEM: nGenEx.lib
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6  FILE: PngImage.cpp
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7  AUTHOR: John DiCamillo
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8 
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9 
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10  OVERVIEW
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11  ========
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12  BMP image file loader
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13 */
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14 
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15 
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16 #include "MemDebug.h"
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17 #include "PngImage.h"
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18 
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19 #include <stdio.h>
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20 #include <stdlib.h>
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21 #include <string.h>
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22 
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23 // Needed for compatibility with libpng 1.4++
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24 #define png_infopp_NULL (png_infopp)NULL
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25 #define png_voidp_NULL (png_voidp)NULL
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26 #define int_p_NULL (int*)NULL
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27 
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28 #include "png.h"
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29 
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30 // +--------------------------------------------------------------------+
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31 
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32 PngImage::PngImage()
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33 : width(0), height(0), bpp(0), alpha_loaded(false), image(0)
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34 { }
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35 
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36 PngImage::~PngImage()
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37 {
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38  delete [] image;
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39 }
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40 
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41 // +--------------------------------------------------------------------+
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42 
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43 int PngImage::Load(char *filename)
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44 {
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45  int status = PNG_INVALID;
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46  FILE* f;
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47 
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48  fopen_s(&f, filename,"rb");
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49  if (f == NULL)
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50  return PNG_NOFILE;
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51 
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52  BYTE buf[12];
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53  fread(buf, 8, 1, f);
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54  fseek(f, 0, SEEK_SET);
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55 
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56  if (png_sig_cmp(buf, (png_size_t)0, 8))
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57  return PNG_INVALID;
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58 
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59  png_structp png_ptr;
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60  png_infop info_ptr;
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61 
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62  /* Create and initialize the png_struct with the desired error handler
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63  * functions. If you want to use the default stderr and longjump method,
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64  * you can supply NULL for the last three parameters. We also supply the
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65  * the compiler header file version, so that we know if the application
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66  * was compiled with a compatible version of the library. REQUIRED
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67  */
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68  png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
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69 
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70  if (!png_ptr) {
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71  return PNG_NOMEM;
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72  }
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73 
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74  /* Allocate/initialize the memory for image information. REQUIRED. */
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75  info_ptr = png_create_info_struct(png_ptr);
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76  if (!info_ptr) {
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77  png_destroy_read_struct(&png_ptr, png_infopp_NULL, png_infopp_NULL);
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78  return PNG_NOMEM;
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79  }
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80 
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81  png_init_io(png_ptr, f);
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82  png_read_png(png_ptr, info_ptr, PNG_TRANSFORM_IDENTITY, png_voidp_NULL);
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83 
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84  status = CreateImage(png_ptr, info_ptr);
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85 
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86  png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL);
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87 
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88  fclose(f);
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89  return status;
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90 }
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91 
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92 // +--------------------------------------------------------------------+
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93 
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94 struct PngIOStruct
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95 {
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96  BYTE* fp;
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97  BYTE* buffer;
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98  DWORD length;
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99 };
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100 
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101 static void png_user_read_data(png_structp read_ptr, png_bytep data, png_size_t length)
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102 {
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103  PngIOStruct* read_io_ptr = (PngIOStruct*) png_get_io_ptr(read_ptr);
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104 
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105  if (!read_io_ptr)
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106  return;
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107 
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108  if (read_io_ptr->fp + length < read_io_ptr->buffer + read_io_ptr->length) {
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109  memcpy(data, read_io_ptr->fp, length);
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110  read_io_ptr->fp += length;
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111  }
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112 }
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113 
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114 static void png_user_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
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115 {
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116 }
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117 
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118 static void png_user_flush_data(png_structp png_ptr)
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119 {
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120 }
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121 
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122 int PngImage::LoadBuffer(unsigned char* buf, int len)
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123 {
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124  int status = PNG_INVALID;
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125  PngIOStruct io;
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126 
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127  if (buf == NULL)
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128  return PNG_NOFILE;
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129 
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130  if (png_sig_cmp(buf, (png_size_t)0, 8))
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131  return PNG_INVALID;
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132 
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133  io.buffer = buf;
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134  io.fp = buf;
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135  io.length = len;
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136 
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137  png_structp png_ptr;
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138  png_infop info_ptr;
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139 
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140  /* Create and initialize the png_struct with the desired error handler
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141  * functions. If you want to use the default stderr and longjump method,
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142  * you can supply NULL for the last three parameters. We also supply the
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143  * the compiler header file version, so that we know if the application
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144  * was compiled with a compatible version of the library. REQUIRED
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145  */
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146  png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
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147 
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148  if (!png_ptr) {
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149  return PNG_NOMEM;
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150  }
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151 
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152  /* Allocate/initialize the memory for image information. REQUIRED. */
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153  info_ptr = png_create_info_struct(png_ptr);
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154  if (!info_ptr) {
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155  png_destroy_read_struct(&png_ptr, png_infopp_NULL, png_infopp_NULL);
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156  return PNG_NOMEM;
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157  }
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158 
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159  png_set_read_fn(png_ptr, (void *) (&io), png_user_read_data);
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160  png_read_png(png_ptr, info_ptr, PNG_TRANSFORM_IDENTITY, png_voidp_NULL);
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161 
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162  status = CreateImage(png_ptr, info_ptr);
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163 
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164  png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL);
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165 
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166  return status;
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167 }
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168 
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169 // +--------------------------------------------------------------------+
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170 
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171 int
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172 PngImage::CreateImage(png_structp png_ptr, png_infop info_ptr)
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173 {
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174  int status = PNG_INVALID;
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175 
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176  width = png_get_image_width(png_ptr, info_ptr);
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177  height = png_get_image_height(png_ptr, info_ptr);
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178  bpp = png_get_bit_depth(png_ptr, info_ptr);
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179 
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180  if (width > 0 && width < 32768 && height > 0 && height < 32768) {
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181  // true-color:
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182  if (bpp >= 24) {
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183  status = PNG_OK;
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184 
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185  if ( png_get_channels(png_ptr, info_ptr) == 4)
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186  alpha_loaded = true;
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187 
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188  image = new DWORD[width*height];
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189  BYTE** rows = png_get_rows(png_ptr, info_ptr);
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190 
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191  for (DWORD row = 0; row < height; row++) {
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192  BYTE* p = rows[row];
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193 
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194  for (DWORD col = 0; col < width; col++) {
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195  DWORD red = *p++;
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196  DWORD green = *p++;
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197  DWORD blue = *p++;
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198  DWORD alpha = 0xff;
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199 
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200  if ( png_get_channels(png_ptr, info_ptr) == 4)
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201  alpha = *p++;
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202 
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203  image[row*width+col] = (alpha << 24) | (red << 16) | (green << 8) | blue;
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204  }
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205  }
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206  }
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207 
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208  // paletted:
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209  else if (bpp == 8) {
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210  DWORD pal[256];
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211 
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212  png_bytep trans_alpha; int num_trans; png_color_16p trans_color;
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213  png_colorp palette;
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214  int num_palette;
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215 
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216  png_get_tRNS(png_ptr, info_ptr, &trans_alpha, &num_trans, &trans_color);
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217  png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette);
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218 
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219  if (num_trans > 0)
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220  alpha_loaded = true;
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221 
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222  for (int i = 0; i < 256; i++) {
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223  if (i < num_palette) {
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224  DWORD red = palette[i].red;
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225  DWORD green = palette[i].green;
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226  DWORD blue = palette[i].blue;
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227  DWORD alpha = 0xff;
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228 
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229  if (i < num_trans)
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230  alpha = trans_alpha[i];
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231 
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232  pal[i] = (alpha << 24) | (red << 16) | (green << 8) | blue;
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233  }
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234 
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235  else {
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236  pal[i] = 0;
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237  }
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238  }
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239 
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240  image = new DWORD[width*height];
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241  BYTE** rows = png_get_rows(png_ptr, info_ptr);
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242 
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243  for (DWORD row = 0; row < height; row++) {
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244  BYTE* p = rows[row];
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245 
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246  for (DWORD col = 0; col < width; col++) {
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247  BYTE index = *p++;
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248  image[row*width+col] = pal[index];
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249  }
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250  }
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251  }
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252  }
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253 
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254  return status;
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255 }
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