1 | /****************************************************************************** |
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2 | * SAGE - Scalable Adaptive Graphics Environment |
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3 | * |
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4 | * Copyright (C) 2004 Electronic Visualization Laboratory, |
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5 | * University of Illinois at Chicago |
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6 | * |
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7 | * All rights reserved. |
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8 | * |
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9 | * Redistribution and use in source and binary forms, with or without |
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10 | * modification, are permitted provided that the following conditions are met: |
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11 | * |
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12 | * * Redistributions of source code must retain the above copyright |
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13 | * notice, this list of conditions and the following disclaimer. |
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14 | * * Redistributions in binary form must reproduce the above |
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15 | * copyright notice, this list of conditions and the following disclaimer |
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16 | * in the documentation and/or other materials provided with the distribution. |
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17 | * * Neither the name of the University of Illinois at Chicago nor |
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18 | * the names of its contributors may be used to endorse or promote |
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19 | * products derived from this software without specific prior written permission. |
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20 | * |
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21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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22 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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23 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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24 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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25 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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26 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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27 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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28 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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29 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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30 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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31 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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32 | * |
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33 | * Direct questions, comments etc about SAGE to http://www.evl.uic.edu/cavern/forum/ |
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34 | * |
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35 | *****************************************************************************/ |
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36 | |
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37 | /* |
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38 | * putrow, getrow - |
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39 | * |
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40 | * Paul Haeberli - 1984 |
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41 | * |
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42 | */ |
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43 | #include <stdio.h> |
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44 | #include <errno.h> |
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45 | #include "image.h" |
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46 | |
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47 | int putrow( IMAGE *image, IMushort *buffer, int y, int z ) |
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48 | { |
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49 | register IMushort *sptr; |
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50 | register unsigned char *cptr; |
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51 | register unsigned int x; |
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52 | register IMulong min, max; |
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53 | register int cnt; |
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54 | |
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55 | if( !(image->flags & (_IORW|_IOWRT)) ) |
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56 | return -1; |
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57 | if(image->dim<3) |
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58 | z = 0; |
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59 | if(image->dim<2) |
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60 | y = 0; |
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61 | if(ISVERBATIM(image->type)) { |
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62 | switch(BPP(image->type)) { |
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63 | case 1: |
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64 | min = image->min; |
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65 | max = image->max; |
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66 | cptr = (unsigned char *)image->tmpbuf; |
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67 | sptr = buffer; |
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68 | for(x=image->xsize; x--;) { |
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69 | *cptr = *sptr++; |
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70 | if (*cptr > max) max = *cptr; |
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71 | if (*cptr < min) min = *cptr; |
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72 | cptr++; |
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73 | } |
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74 | image->min = min; |
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75 | image->max = max; |
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76 | img_seek(image,y,z); |
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77 | cnt = image->xsize; |
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78 | if (img_write(image,(char *)image->tmpbuf,cnt) != cnt) |
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79 | return -1; |
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80 | else |
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81 | return cnt; |
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82 | |
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83 | case 2: |
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84 | min = image->min; |
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85 | max = image->max; |
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86 | sptr = buffer; |
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87 | for(x=image->xsize; x--;) { |
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88 | if (*sptr > max) max = *sptr; |
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89 | if (*sptr < min) min = *sptr; |
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90 | sptr++; |
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91 | } |
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92 | image->min = min; |
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93 | image->max = max; |
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94 | img_seek(image,y,z); |
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95 | cnt = image->xsize<<1; |
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96 | if(image->dorev) |
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97 | cvtshorts(buffer,cnt); |
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98 | if (img_write(image,(char *)buffer,cnt) != cnt) { |
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99 | if(image->dorev) |
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100 | cvtshorts(buffer,cnt); |
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101 | return -1; |
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102 | } else { |
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103 | if(image->dorev) |
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104 | cvtshorts(buffer,cnt); |
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105 | return image->xsize; |
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106 | } |
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107 | |
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108 | default: |
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109 | i_errhdlr("putrow: wierd bpp\n"); |
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110 | } |
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111 | } else if(ISRLE(image->type)) { |
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112 | switch(BPP(image->type)) { |
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113 | case 1: |
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114 | min = image->min; |
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115 | max = image->max; |
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116 | sptr = buffer; |
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117 | for(x=image->xsize; x--;) { |
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118 | if (*sptr > max) max = *sptr; |
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119 | if (*sptr < min) min = *sptr; |
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120 | sptr++; |
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121 | } |
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122 | image->min = min; |
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123 | image->max = max; |
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124 | cnt = img_rle_compact(buffer,2,image->tmpbuf,1,image->xsize); |
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125 | img_setrowsize(image,cnt,y,z); |
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126 | img_seek(image,y,z); |
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127 | if (img_write(image,(char *)image->tmpbuf,cnt) != cnt) |
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128 | return -1; |
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129 | else |
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130 | return image->xsize; |
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131 | break; |
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132 | |
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133 | case 2: |
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134 | min = image->min; |
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135 | max = image->max; |
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136 | sptr = buffer; |
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137 | for(x=image->xsize; x--;) { |
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138 | if (*sptr > max) max = *sptr; |
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139 | if (*sptr < min) min = *sptr; |
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140 | sptr++; |
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141 | } |
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142 | image->min = min; |
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143 | image->max = max; |
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144 | cnt = img_rle_compact(buffer,2,image->tmpbuf,2,image->xsize); |
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145 | cnt <<= 1; |
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146 | img_setrowsize(image,cnt,y,z); |
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147 | img_seek(image,y,z); |
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148 | if(image->dorev) |
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149 | cvtshorts(image->tmpbuf,cnt); |
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150 | if (img_write(image,(char *)image->tmpbuf,cnt) != cnt) { |
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151 | if(image->dorev) |
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152 | cvtshorts(image->tmpbuf,cnt); |
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153 | return -1; |
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154 | } else { |
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155 | if(image->dorev) |
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156 | cvtshorts(image->tmpbuf,cnt); |
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157 | return image->xsize; |
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158 | } |
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159 | break; |
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160 | |
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161 | default: |
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162 | i_errhdlr("putrow: wierd bpp\n"); |
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163 | } |
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164 | } else |
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165 | i_errhdlr("putrow: wierd image type\n"); |
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166 | return 0; |
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167 | } |
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168 | |
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169 | int getrow( IMAGE *image, IMushort *buffer, int y, int z ) |
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170 | { |
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171 | register int i; |
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172 | register unsigned char *cptr; |
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173 | register IMushort *sptr; |
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174 | register int cnt; |
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175 | |
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176 | if( !(image->flags & (_IORW|_IOREAD)) ) |
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177 | return -1; |
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178 | if(image->dim<3) |
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179 | z = 0; |
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180 | if(image->dim<2) |
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181 | y = 0; |
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182 | img_seek(image, y, z); |
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183 | if(ISVERBATIM(image->type)) { |
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184 | switch(BPP(image->type)) { |
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185 | case 1: |
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186 | if (img_read(image,(char *)image->tmpbuf,image->xsize) |
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187 | != image->xsize) |
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188 | return -1; |
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189 | else { |
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190 | cptr = (unsigned char *)image->tmpbuf; |
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191 | sptr = buffer; |
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192 | for(i=image->xsize; i--;) |
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193 | *sptr++ = *cptr++; |
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194 | } |
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195 | return image->xsize; |
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196 | case 2: |
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197 | cnt = image->xsize<<1; |
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198 | if (img_read(image,(char *)buffer,cnt) != cnt) |
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199 | return -1; |
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200 | else { |
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201 | if(image->dorev) |
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202 | cvtshorts(buffer,cnt); |
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203 | return image->xsize; |
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204 | } |
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205 | default: |
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206 | i_errhdlr("getrow: wierd bpp\n"); |
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207 | break; |
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208 | } |
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209 | } else if(ISRLE(image->type)) { |
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210 | switch(BPP(image->type)) { |
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211 | case 1: |
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212 | if( (cnt = img_getrowsize(image)) == -1 ) |
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213 | return -1; |
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214 | if( img_read(image,(char *)image->tmpbuf,cnt) != cnt ) |
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215 | return -1; |
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216 | else { |
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217 | img_rle_expand(image->tmpbuf,1,buffer,2); |
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218 | return image->xsize; |
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219 | } |
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220 | case 2: |
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221 | if( (cnt = img_getrowsize(image)) == -1 ) |
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222 | return -1; |
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223 | if( cnt != img_read(image,(char *)image->tmpbuf,cnt) ) |
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224 | return -1; |
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225 | else { |
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226 | if(image->dorev) |
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227 | cvtshorts(image->tmpbuf,cnt); |
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228 | img_rle_expand(image->tmpbuf,2,buffer,2); |
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229 | return image->xsize; |
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230 | } |
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231 | default: |
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232 | i_errhdlr("getrow: wierd bpp\n"); |
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233 | break; |
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234 | } |
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235 | } else |
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236 | i_errhdlr("getrow: wierd image type\n"); |
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237 | return 0; |
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238 | } |
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