2 Copyright (C) 1999-2007 id Software, Inc. and contributors.
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3 For a list of contributors, see the accompanying CONTRIBUTORS file.
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5 This file is part of GtkRadiant.
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7 GtkRadiant is free software; you can redistribute it and/or modify
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 2 of the License, or
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10 (at your option) any later version.
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12 GtkRadiant is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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17 You should have received a copy of the GNU General Public License
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18 along with GtkRadiant; if not, write to the Free Software
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19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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29 static void BMPLineNone(FILE *f, char *sline, int pixbytes, int width)
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31 int nbytes, i, k, j;
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36 nbytes = (width + 3) / 4;
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39 fread(sline, width, 1, f);
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42 while (nbytes-- > 0) fgetc(f);
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46 nbytes = ((width * 3) + 3) / 4;
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49 fread(sline, width, 3, f);
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50 nbytes -= width * 3;
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52 while (nbytes-- > 0) fgetc(f);
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54 // reorder bgr to rgb
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55 for (i = 0, j = 0; i < width; i++, j += 3)
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58 sline[j] = sline[j+2];
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65 Error("BMPLineNone failed.");
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69 static void BMPLineRLE8(FILE *f, char *sline, int pixbytes, int width)
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71 Error("RLE8 not yet supported.");
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75 static void BMPLineRLE4(FILE *f, char *sline, int pixbytes, int width)
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77 Error("RLE4 not yet supported.");
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81 static void BMPLine(FILE *f, char *scanline, int pixbytes, int width, int rle)
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85 case xBI_NONE : BMPLineNone(f, scanline, pixbytes, width); return;
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86 case xBI_RLE8 : BMPLineRLE8(f, scanline, pixbytes, width); return;
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87 case xBI_RLE4 : BMPLineRLE4(f, scanline, pixbytes, width); return;
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90 Error("Unknown compression type.");
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95 static void PrintHeader(binfo_t *b)
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97 printf("biSize : %ld\n", b->biSize);
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98 printf("biWidth : %ld\n", b->biWidth);
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99 printf("biHeight : %ld\n", b->biHeight);
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100 printf("biPlanes : %d\n", b->biPlanes);
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101 printf("biBitCount : %d\n", b->biBitCount);
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102 printf("biCompression : %ld\n", b->biCompression);
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103 printf("biSizeImage : %ld\n", b->biSizeImage);
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104 printf("biXPelsPerMeter: %ld\n", b->biXPelsPerMeter);
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105 printf("biYPelsPerMeter: %ld\n", b->biYPelsPerMeter);
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106 printf("biClrUsed : %ld\n", b->biClrUsed);
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107 printf("biClrImportant : %ld\n", b->biClrImportant);
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111 // FIXME: calls to Error(const char *, ... ) are dependant on qe3.cpp
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112 void LoadBMP(char *filename, bitmap_t *bit)
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117 // int pxlsize = 1;
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118 int rowbytes, i, pixbytes;
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122 if ((f = fopen(filename, "rb")) == NULL)
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124 Error("Unable to open file");// %s.", filename);
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127 // read in bitmap header
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128 if (fread(&bhd, sizeof(bhd), 1, f) != 1)
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131 Error("Unable to read in bitmap header.");
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134 // make sure we have a valid bitmap file
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135 if (bhd.bfType != BMP_SIGNATURE_WORD)
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138 Error("Invalid BMP file");//: %s", filename);
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141 // load in info header
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142 if (fread(&info, sizeof(info), 1, f) != 1)
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145 Error("Unable to read bitmap info header.");
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148 // make sure this is an info type of bitmap
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149 if (info.biSize != sizeof(binfo_t))
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152 Error("We only support the info bitmap type.");
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155 // PrintHeader(&info);
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157 bit->bpp = info.biBitCount;
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158 bit->width = info.biWidth;
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159 bit->height = info.biHeight;
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161 bit->palette = NULL;
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163 //currently we only read in 8 and 24 bit bmp files
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164 if (info.biBitCount == 8) pixbytes = 1;
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165 else if (info.biBitCount == 24) pixbytes = 3;
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168 Error("Only 8BPP and 24BPP supported");
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169 //Error("BPP %d not supported.", info.biBitCount);
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172 // if this is an eight bit image load palette
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177 bit->palette = reinterpret_cast<rgb_t*>(g_malloc(sizeof(rgb_t) * 256));
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179 for (i = 0; i < 256; i++)
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181 if (fread(&q, sizeof(drgb_t), 1, f) != 1)
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183 fclose(f); g_free(bit->palette);
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184 Error("Unable to read palette.");
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187 bit->palette[i].r = q.red;
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188 bit->palette[i].g = q.green;
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189 bit->palette[i].b = q.blue;
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193 // position to start of bitmap
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194 fseek(f, bhd.bfOffBits, SEEK_SET);
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196 // create scanline to read data into
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197 rowbytes = ((info.biWidth * pixbytes) + 3) / 4;
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200 scanline = reinterpret_cast<char*>(g_malloc(rowbytes));
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202 // alloc space for new bitmap
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203 bit->data = reinterpret_cast<unsigned char*>(g_malloc(info.biWidth * pixbytes * info.biHeight));
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206 for (i = 0; i < info.biHeight; i++)
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208 BMPLine(f, scanline, pixbytes, info.biWidth, info.biCompression);
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211 memcpy(&bit->data[info.biWidth * pixbytes * (info.biHeight - i - 1)], scanline, info.biWidth * pixbytes);
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220 static void BMPEncodeLine(FILE *f, unsigned char *data, int npxls, int pixbytes)
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222 int nbytes, i, j, k;
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227 nbytes = (npxls + 3) / 4;
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230 fwrite(data, npxls, 1, f);
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233 while (nbytes-- > 0) fputc(0, f);
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237 // reorder rgb to bgr
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238 for (i = 0, j = 0; i < npxls; i++, j+= 3)
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241 data[j] = data[j + 2];
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245 nbytes = ((npxls * 3) + 3) / 4;
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248 fwrite(data, npxls, 3, f);
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249 nbytes -= npxls * 3;
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251 while (nbytes-- > 0) fputc(0, f);
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255 Error("BMPEncodeLine Failed.");
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260 void WriteBMP(char *filename, bitmap_t *bit)
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265 drgb_t q; // palette that gets written
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270 if (bit->bpp == 8) pixbytes = 1;
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271 else if (bit->bpp == 24) pixbytes = 3;
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275 Error("Only 8BPP and 24BPP supported");
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276 //Error("BPP %d not supported.", bit->bpp);
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280 if ((f = fopen(filename, "wb")) == NULL)
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282 Error("Unable to open file");//%s.", filename);
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285 // write out an empty header as a place holder
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286 if (fwrite(&header, sizeof(header), 1, f) != 1)
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288 Error("Unable to fwrite.");
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291 // init and write info header
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292 info.biSize = sizeof(binfo_t);
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293 info.biWidth = bit->width;
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294 info.biHeight = bit->height;
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296 info.biBitCount = bit->bpp;
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297 info.biCompression = xBI_NONE;
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298 info.biSizeImage = bit->width * bit->height;
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299 info.biXPelsPerMeter = 0;
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300 info.biYPelsPerMeter = 0;
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301 info.biClrUsed = 256;
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302 info.biClrImportant = 256;
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304 if (fwrite(&info, sizeof(binfo_t), 1, f) != 1)
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306 Error("fwrite failed.");
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309 // write out palette if we need to
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312 for (i = 0; i < 256; i++)
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314 q.red = bit->palette[i].r;
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315 q.green = bit->palette[i].g;
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316 q.blue = bit->palette[i].b;
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318 fwrite(&q, sizeof(q), 1, f);
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322 // save offset to start of bitmap
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329 for (i = h - 1; i >= 0; i--)
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331 BMPEncodeLine(f, &bit->data[w * pixbytes * i], w, pixbytes);
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334 // update and rewrite file header
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335 header.bfType = BMP_SIGNATURE_WORD;
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336 header.bfSize = ftell(f);
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337 header.bfOffBits = bmofs;
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339 fseek(f, 0L, SEEK_SET);
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340 fwrite(&header, sizeof(header), 1, f);
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346 void NewBMP(int width, int height, int bpp, bitmap_t *bit)
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350 if (bpp == 8) pixbytes = 1;
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351 else if (bpp == 24) pixbytes = 3;
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355 Error("NewBMP: 8 or 24 bit only.");
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359 bit->width = width;
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360 bit->height = height;
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362 bit->data = reinterpret_cast<unsigned char*>(g_malloc(width * height * pixbytes));
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364 if (bit->data == NULL)
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366 Error("NewBMP: g_malloc failed.");
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369 // see if we need to create a palette
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372 bit->palette = (rgb_t *) g_malloc(768);
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374 if (bit->palette == NULL)
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376 Error("NewBMP: unable to g_malloc palette.");
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381 bit->palette = NULL;
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387 void FreeBMP(bitmap_t *bitmap)
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389 if (bitmap->palette)
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391 g_free(bitmap->palette);
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392 bitmap->palette = NULL;
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397 g_free(bitmap->data);
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398 bitmap->data = NULL;
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