| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* GATE PROJECT LICENSE: | ||
| 2 | +----------------------------------------------------------------------------+ | ||
| 3 | | Copyright(c) 2018-2025, Stefan Meislinger | | ||
| 4 | | All rights reserved. | | ||
| 5 | | | | ||
| 6 | | Redistribution and use in source and binary forms, with or without | | ||
| 7 | | modification, are permitted provided that the following conditions are met:| | ||
| 8 | | | | ||
| 9 | | 1. Redistributions of source code must retain the above copyright notice, | | ||
| 10 | | this list of conditions and the following disclaimer. | | ||
| 11 | | 2. Redistributions in binary form must reproduce the above copyright | | ||
| 12 | | notice, this list of conditions and the following disclaimer in the | | ||
| 13 | | documentation and/or other materials provided with the distribution. | | ||
| 14 | | | | ||
| 15 | | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"| | ||
| 16 | | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | | ||
| 17 | | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | | ||
| 18 | | ARE DISCLAIMED.IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | | ||
| 19 | | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | | ||
| 20 | | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | | ||
| 21 | | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | | ||
| 22 | | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | | ||
| 23 | | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | | ||
| 24 | | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF | | ||
| 25 | | THE POSSIBILITY OF SUCH DAMAGE. | | ||
| 26 | +----------------------------------------------------------------------------+ | ||
| 27 | */ | ||
| 28 | |||
| 29 | #include "gate/graphics/bitmapimages.h" | ||
| 30 | #include "gate/results.h" | ||
| 31 | #include "gate/serializers.h" | ||
| 32 | #include "gate/debugging.h" | ||
| 33 | #include "gate/mathematics.h" | ||
| 34 | |||
| 35 | typedef struct gate_bmp_header_class | ||
| 36 | { | ||
| 37 | gate_uint32_t header_sz; | ||
| 38 | gate_int32_t width; | ||
| 39 | gate_int32_t height; | ||
| 40 | gate_uint16_t nplanes; | ||
| 41 | gate_uint16_t bitspp; | ||
| 42 | gate_uint32_t compress_type; | ||
| 43 | gate_uint32_t bmp_bytesz; | ||
| 44 | gate_int32_t hres; | ||
| 45 | gate_int32_t vres; | ||
| 46 | gate_uint32_t ncolors; | ||
| 47 | gate_uint32_t nimpcolors; | ||
| 48 | } gate_bmp_header_t; | ||
| 49 | |||
| 50 | |||
| 51 | |||
| 52 | 1 | static gate_result_t load_bitmap_as_rgba_image( | |
| 53 | gate_stream_t* srcstream, | ||
| 54 | gate_bmp_header_t const* ptr_header, | ||
| 55 | char const* palette, | ||
| 56 | gate_size_t linelen, | ||
| 57 | gate_rasterimage_t* image) | ||
| 58 | { | ||
| 59 | 1 | gate_result_t result = GATE_RESULT_FAILED; | |
| 60 | 1 | const unsigned width = ptr_header->width < 0 ? (unsigned)(-ptr_header->width) : (unsigned)ptr_header->width; | |
| 61 | 1 | const unsigned height = ptr_header->height < 0 ? (unsigned)(-ptr_header->height) : (unsigned)ptr_header->height; | |
| 62 | gate_rasterimage_t raster; | ||
| 63 | gate_index_t lineadd; | ||
| 64 | gate_color_t* ptrpixel; | ||
| 65 | gate_color_t* ptrline; | ||
| 66 | unsigned x, y, z; | ||
| 67 | gate_size_t lenread; | ||
| 68 | char buffer[8192]; | ||
| 69 | 1 | char* ptr_buffer = &buffer[0]; | |
| 70 | gate_uint8_t const* ptrbytes; | ||
| 71 | gate_uint8_t const* ptrpal; | ||
| 72 | 1 | gate_bool_t all_alphas_are_zero = true; | |
| 73 | |||
| 74 | do | ||
| 75 | { | ||
| 76 | 1 | gate_mem_clear(&raster, sizeof(raster)); | |
| 77 | |||
| 78 |
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1 | if (NULL == gate_rasterimage_create(&raster, GATE_IMAGE_PIXELFORMAT_RGBA, width, height, NULL)) |
| 79 | { | ||
| 80 | ✗ | result = GATE_RESULT_OUTOFMEMORY; | |
| 81 | ✗ | break; | |
| 82 | } | ||
| 83 | |||
| 84 |
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1 | if (linelen > sizeof(buffer)) |
| 85 | { | ||
| 86 | ✗ | ptr_buffer = gate_mem_alloc(linelen); | |
| 87 | ✗ | if (NULL == ptr_buffer) | |
| 88 | { | ||
| 89 | ✗ | result = GATE_RESULT_OUTOFMEMORY; | |
| 90 | ✗ | break; | |
| 91 | } | ||
| 92 | } | ||
| 93 | |||
| 94 |
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1 | if (ptr_header->height < 0) |
| 95 | { | ||
| 96 | ✗ | ptrpixel = (gate_color_t*)gate_rasterimage_get_line_ptr(&raster, 0); | |
| 97 | ✗ | lineadd = width; | |
| 98 | } | ||
| 99 | else | ||
| 100 | { | ||
| 101 | 1 | ptrpixel = (gate_color_t*)gate_rasterimage_get_line_ptr(&raster, (height - 1)); | |
| 102 | 1 | lineadd = -(gate_index_t)width; | |
| 103 | } | ||
| 104 | |||
| 105 | 1 | result = GATE_RESULT_OK; | |
| 106 |
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33 | for (y = 0; y != height; ++y) |
| 107 | { | ||
| 108 | |||
| 109 | 32 | result = gate_stream_read_block(srcstream, ptr_buffer, linelen, &lenread); | |
| 110 |
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32 | if (GATE_FAILED(result)) |
| 111 | { | ||
| 112 | ✗ | break; | |
| 113 | } | ||
| 114 |
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32 | if (lenread < linelen) |
| 115 | { | ||
| 116 | ✗ | result = GATE_RESULT_ENDOFSTREAM; | |
| 117 | ✗ | break; | |
| 118 | } | ||
| 119 | 32 | ptrline = ptrpixel; | |
| 120 | 32 | ptrbytes = (gate_uint8_t const*)ptr_buffer; | |
| 121 | |||
| 122 |
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2080 | for (x = 0; x < width; ++x) |
| 123 | { | ||
| 124 |
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2048 | switch (ptr_header->bitspp) |
| 125 | { | ||
| 126 | ✗ | default: | |
| 127 | { | ||
| 128 | ✗ | ptrline->b = 0; | |
| 129 | ✗ | ptrline->g = 0; | |
| 130 | ✗ | ptrline->r = 0; | |
| 131 | ✗ | ptrline->a = 255; | |
| 132 | ✗ | ++ptrline; | |
| 133 | ✗ | break; | |
| 134 | } | ||
| 135 | ✗ | case 1: | |
| 136 | { | ||
| 137 | ✗ | for (z = 0; z != 8; ++z) | |
| 138 | { | ||
| 139 | ✗ | if (*ptrbytes & (gate_uint8_t)(1 << (7 - z))) | |
| 140 | { | ||
| 141 | ✗ | ptrpal = (gate_uint8_t const*)&palette[4]; | |
| 142 | } | ||
| 143 | else | ||
| 144 | { | ||
| 145 | ✗ | ptrpal = (gate_uint8_t const*)&palette[0]; | |
| 146 | } | ||
| 147 | ✗ | ptrline->b = ptrpal[0]; | |
| 148 | ✗ | ptrline->g = ptrpal[1]; | |
| 149 | ✗ | ptrline->r = ptrpal[2]; | |
| 150 | ✗ | ptrline->a = ptrpal[3]; | |
| 151 | ✗ | all_alphas_are_zero &= ((ptrline->a == 0) ? true : false); | |
| 152 | ✗ | ++ptrline; | |
| 153 | } | ||
| 154 | ✗ | ++ptrbytes; | |
| 155 | ✗ | x += 7; | |
| 156 | ✗ | break; | |
| 157 | } | ||
| 158 | ✗ | case 4: | |
| 159 | { | ||
| 160 | ✗ | ptrpal = (gate_uint8_t const*)&palette[4 * (unsigned)(*ptrbytes >> 4)]; | |
| 161 | ✗ | ptrline->b = ptrpal[0]; | |
| 162 | ✗ | ptrline->g = ptrpal[1]; | |
| 163 | ✗ | ptrline->r = ptrpal[2]; | |
| 164 | ✗ | ptrline->a = ptrpal[3]; | |
| 165 | ✗ | all_alphas_are_zero &= ((ptrline->a == 0) ? true : false); | |
| 166 | ✗ | ++ptrline; | |
| 167 | |||
| 168 | ✗ | ptrpal = (gate_uint8_t const*)&palette[4 * (unsigned)(*ptrbytes & 0x0f)]; | |
| 169 | ✗ | ptrline->b = ptrpal[0]; | |
| 170 | ✗ | ptrline->g = ptrpal[1]; | |
| 171 | ✗ | ptrline->r = ptrpal[2]; | |
| 172 | ✗ | ptrline->a = ptrpal[3]; | |
| 173 | ✗ | all_alphas_are_zero &= ((ptrline->a == 0) ? true : false); | |
| 174 | ✗ | ++ptrline; | |
| 175 | |||
| 176 | ✗ | ++ptrbytes; | |
| 177 | ✗ | ++x; | |
| 178 | ✗ | break; | |
| 179 | } | ||
| 180 | ✗ | case 8: | |
| 181 | { | ||
| 182 | ✗ | ptrpal = (gate_uint8_t const*)&palette[4 * (gate_size_t)*ptrbytes]; | |
| 183 | ✗ | ++ptrbytes; | |
| 184 | ✗ | ptrline->b = ptrpal[0]; | |
| 185 | ✗ | ptrline->g = ptrpal[1]; | |
| 186 | ✗ | ptrline->r = ptrpal[2]; | |
| 187 | ✗ | ptrline->a = ptrpal[3]; | |
| 188 | ✗ | all_alphas_are_zero &= ((ptrline->a == 0) ? true : false); | |
| 189 | ✗ | ++ptrline; | |
| 190 | ✗ | break; | |
| 191 | } | ||
| 192 | ✗ | case 15: | |
| 193 | case 16: | ||
| 194 | { | ||
| 195 | ✗ | ptrline->b = (ptrbytes[0] & 0x1f) << 3; | |
| 196 | ✗ | ptrline->g = ((ptrbytes[0] >> 5) | ((ptrbytes[1] & 0x03) << 3)) << 3; | |
| 197 | ✗ | ptrline->r = (ptrbytes[1] & 0x7c) << 1; | |
| 198 | ✗ | ptrline->a = 255; | |
| 199 | ✗ | ++ptrline; | |
| 200 | ✗ | break; | |
| 201 | } | ||
| 202 | ✗ | case 24: | |
| 203 | { | ||
| 204 | ✗ | ptrline->b = *ptrbytes++; | |
| 205 | ✗ | ptrline->g = *ptrbytes++; | |
| 206 | ✗ | ptrline->r = *ptrbytes++; | |
| 207 | ✗ | ptrline->a = 255; | |
| 208 | ✗ | ++ptrline; | |
| 209 | ✗ | break; | |
| 210 | } | ||
| 211 | 2048 | case 32: | |
| 212 | { | ||
| 213 | 2048 | ptrline->b = *ptrbytes++; | |
| 214 | 2048 | ptrline->g = *ptrbytes++; | |
| 215 | 2048 | ptrline->r = *ptrbytes++; | |
| 216 | 2048 | ptrline->a = *ptrbytes++; | |
| 217 | 2048 | all_alphas_are_zero &= ((ptrline->a == 0) ? true : false); | |
| 218 | 2048 | ++ptrline; | |
| 219 | 2048 | break; | |
| 220 | } | ||
| 221 | } | ||
| 222 | } /* for(x) */ | ||
| 223 | |||
| 224 | 32 | ptrpixel += lineadd; | |
| 225 | } /* for(y) */ | ||
| 226 | |||
| 227 |
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1 | GATE_BREAK_IF_FAILED(result); |
| 228 | |||
| 229 |
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1 | if (all_alphas_are_zero) |
| 230 | { | ||
| 231 | /* all alpha values are zero means, that | ||
| 232 | the soruce stream had no alpha-values stored | ||
| 233 | and all the reserved bits were zero. | ||
| 234 | Therfore we just patch all alpha-values to 255 | ||
| 235 | */ | ||
| 236 | ✗ | gate_size_t pixelcount = (gate_size_t)raster.width * (gate_size_t)raster.height; | |
| 237 | ✗ | ptrpixel = (gate_color_t*)gate_rasterimage_get_line_ptr(&raster, 0); | |
| 238 | ✗ | while (pixelcount-- != 0) | |
| 239 | { | ||
| 240 | ✗ | ptrpixel->a = 255; | |
| 241 | ✗ | ++ptrpixel; | |
| 242 | } | ||
| 243 | } | ||
| 244 | |||
| 245 | /* success case, transfer local image object into output object */ | ||
| 246 | 1 | gate_mem_copy(image, &raster, sizeof(raster)); | |
| 247 | 1 | gate_mem_clear(&raster, sizeof(raster)); | |
| 248 | 1 | result = GATE_RESULT_OK; | |
| 249 | } while (0); | ||
| 250 | |||
| 251 |
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1 | if ((ptr_buffer != NULL) & (ptr_buffer != &buffer[0])) |
| 252 | { | ||
| 253 | ✗ | gate_mem_dealloc(ptr_buffer); | |
| 254 | } | ||
| 255 | 1 | gate_rasterimage_release(&raster); | |
| 256 | |||
| 257 | 1 | return result; | |
| 258 | } | ||
| 259 | |||
| 260 | |||
| 261 | ✗ | static gate_result_t load_bitmap_generic( | |
| 262 | gate_stream_t* srcstream, | ||
| 263 | gate_bmp_header_t const* ptr_header, | ||
| 264 | char const* palette, | ||
| 265 | gate_size_t linelen, | ||
| 266 | gate_enumint_t pixel_format, | ||
| 267 | gate_rasterimage_t* image) | ||
| 268 | { | ||
| 269 | ✗ | gate_result_t result = GATE_RESULT_FAILED; | |
| 270 | ✗ | const unsigned width = ptr_header->width < 0 ? (unsigned)(-ptr_header->width) : (unsigned)ptr_header->width; | |
| 271 | ✗ | const unsigned height = ptr_header->height < 0 ? (unsigned)(-ptr_header->height) : (unsigned)ptr_header->height; | |
| 272 | gate_rasterimage_t raster; | ||
| 273 | unsigned x, y, z; | ||
| 274 | gate_size_t lenread; | ||
| 275 | gate_color_t current_pixel; | ||
| 276 | char buffer[8192]; | ||
| 277 | ✗ | char* ptr_buffer = &buffer[0]; | |
| 278 | gate_uint8_t const* ptrpal; | ||
| 279 | |||
| 280 | do | ||
| 281 | { | ||
| 282 | ✗ | gate_mem_clear(&raster, sizeof(raster)); | |
| 283 | |||
| 284 | ✗ | if (NULL == gate_rasterimage_create(&raster, pixel_format, width, height, NULL)) | |
| 285 | { | ||
| 286 | ✗ | result = GATE_RESULT_OUTOFMEMORY; | |
| 287 | ✗ | break; | |
| 288 | } | ||
| 289 | |||
| 290 | ✗ | if (linelen > sizeof(buffer)) | |
| 291 | { | ||
| 292 | ✗ | ptr_buffer = gate_mem_alloc(linelen); | |
| 293 | ✗ | if (NULL == ptr_buffer) | |
| 294 | { | ||
| 295 | ✗ | result = GATE_RESULT_OUTOFMEMORY; | |
| 296 | ✗ | break; | |
| 297 | } | ||
| 298 | } | ||
| 299 | |||
| 300 | ✗ | result = GATE_RESULT_OK; | |
| 301 | ✗ | for (y = 0; y != height; ++y) | |
| 302 | { | ||
| 303 | ✗ | const unsigned dest_y = (ptr_header->height < 0) ? y : height - y - 1; | |
| 304 | ✗ | gate_uint8_t const* ptr_line_bytes = (gate_uint8_t const*)ptr_buffer; | |
| 305 | |||
| 306 | ✗ | result = gate_stream_read_block(srcstream, ptr_buffer, linelen, &lenread); | |
| 307 | ✗ | if (GATE_FAILED(result)) | |
| 308 | { | ||
| 309 | ✗ | break; | |
| 310 | } | ||
| 311 | ✗ | if (lenread < linelen) | |
| 312 | { | ||
| 313 | ✗ | result = GATE_RESULT_ENDOFSTREAM; | |
| 314 | ✗ | break; | |
| 315 | } | ||
| 316 | |||
| 317 | ✗ | for (x = 0; x < width; ++x) | |
| 318 | { | ||
| 319 | ✗ | switch (ptr_header->bitspp) | |
| 320 | { | ||
| 321 | ✗ | default: | |
| 322 | { | ||
| 323 | ✗ | current_pixel.b = 0; | |
| 324 | ✗ | current_pixel.g = 0; | |
| 325 | ✗ | current_pixel.r = 0; | |
| 326 | ✗ | current_pixel.a = 255; | |
| 327 | ✗ | ++ptr_line_bytes; | |
| 328 | ✗ | break; | |
| 329 | } | ||
| 330 | ✗ | case 1: | |
| 331 | { | ||
| 332 | ✗ | for (z = 0; z != 8; ++z) | |
| 333 | { | ||
| 334 | ✗ | if (*ptr_line_bytes & (gate_uint8_t)(1 << (7 - z))) | |
| 335 | { | ||
| 336 | ✗ | ptrpal = (gate_uint8_t const*)&palette[4]; | |
| 337 | } | ||
| 338 | else | ||
| 339 | { | ||
| 340 | ✗ | ptrpal = (gate_uint8_t const*)&palette[0]; | |
| 341 | } | ||
| 342 | ✗ | current_pixel.b = ptrpal[0]; | |
| 343 | ✗ | current_pixel.g = ptrpal[1]; | |
| 344 | ✗ | current_pixel.r = ptrpal[2]; | |
| 345 | ✗ | current_pixel.a = 255; | |
| 346 | |||
| 347 | ✗ | gate_rasterimage_set_pixel(&raster, x + z, dest_y, ¤t_pixel); | |
| 348 | } | ||
| 349 | ✗ | ++ptr_line_bytes; | |
| 350 | ✗ | x += 7; | |
| 351 | ✗ | break; | |
| 352 | } | ||
| 353 | ✗ | case 4: | |
| 354 | { | ||
| 355 | ✗ | ptrpal = (gate_uint8_t const*)&palette[4 * (unsigned)(*ptr_line_bytes >> 4)]; | |
| 356 | ✗ | current_pixel.b = ptrpal[0]; | |
| 357 | ✗ | current_pixel.g = ptrpal[1]; | |
| 358 | ✗ | current_pixel.r = ptrpal[2]; | |
| 359 | ✗ | current_pixel.a = 255; | |
| 360 | ✗ | gate_rasterimage_set_pixel(&raster, x, dest_y, ¤t_pixel); | |
| 361 | ✗ | ++ptr_line_bytes; | |
| 362 | ✗ | ++x; | |
| 363 | |||
| 364 | ✗ | ptrpal = (gate_uint8_t const*)&palette[4 * (unsigned)(*ptr_line_bytes & 0x0f)]; | |
| 365 | ✗ | current_pixel.b = ptrpal[0]; | |
| 366 | ✗ | current_pixel.g = ptrpal[1]; | |
| 367 | ✗ | current_pixel.r = ptrpal[2]; | |
| 368 | ✗ | current_pixel.a = 255; | |
| 369 | ✗ | ++ptr_line_bytes; | |
| 370 | ✗ | break; | |
| 371 | } | ||
| 372 | ✗ | case 8: | |
| 373 | { | ||
| 374 | ✗ | ptrpal = (gate_uint8_t const*)&palette[4 * (gate_size_t)*ptr_line_bytes]; | |
| 375 | ✗ | current_pixel.b = ptrpal[0]; | |
| 376 | ✗ | current_pixel.g = ptrpal[1]; | |
| 377 | ✗ | current_pixel.r = ptrpal[2]; | |
| 378 | ✗ | current_pixel.a = 255; | |
| 379 | ✗ | ++ptr_line_bytes; | |
| 380 | ✗ | break; | |
| 381 | } | ||
| 382 | ✗ | case 15: | |
| 383 | case 16: | ||
| 384 | { | ||
| 385 | ✗ | current_pixel.b = (ptr_line_bytes[0] & 0x1f) << 3; | |
| 386 | ✗ | current_pixel.g = ((ptr_line_bytes[0] >> 5) | ((ptr_line_bytes[1] & 0x03) << 3)) << 3; | |
| 387 | ✗ | current_pixel.r = (ptr_line_bytes[1] & 0x7c) << 1; | |
| 388 | ✗ | current_pixel.a = 255; | |
| 389 | ✗ | ptr_line_bytes += 2; | |
| 390 | ✗ | break; | |
| 391 | } | ||
| 392 | ✗ | case 24: | |
| 393 | { | ||
| 394 | ✗ | current_pixel.b = ptr_line_bytes[0]; | |
| 395 | ✗ | current_pixel.g = ptr_line_bytes[1]; | |
| 396 | ✗ | current_pixel.r = ptr_line_bytes[2]; | |
| 397 | ✗ | current_pixel.a = 255; | |
| 398 | ✗ | ptr_line_bytes += 3; | |
| 399 | ✗ | break; | |
| 400 | } | ||
| 401 | ✗ | case 32: | |
| 402 | { | ||
| 403 | ✗ | current_pixel.b = ptr_line_bytes[0]; | |
| 404 | ✗ | current_pixel.g = ptr_line_bytes[1]; | |
| 405 | ✗ | current_pixel.r = ptr_line_bytes[2]; | |
| 406 | ✗ | current_pixel.a = ptr_line_bytes[3]; | |
| 407 | ✗ | ptr_line_bytes += 4; | |
| 408 | ✗ | break; | |
| 409 | } | ||
| 410 | } | ||
| 411 | |||
| 412 | ✗ | gate_rasterimage_set_pixel(&raster, x, y, ¤t_pixel); | |
| 413 | } /* for(x) */ | ||
| 414 | } /* for(y) */ | ||
| 415 | ✗ | GATE_BREAK_IF_FAILED(result); | |
| 416 | |||
| 417 | /* success case, transfer local image object into output object */ | ||
| 418 | ✗ | gate_mem_copy(image, &raster, sizeof(raster)); | |
| 419 | ✗ | gate_mem_clear(&raster, sizeof(raster)); | |
| 420 | ✗ | result = GATE_RESULT_OK; | |
| 421 | } while (0); | ||
| 422 | |||
| 423 | ✗ | if ((ptr_buffer != NULL) & (ptr_buffer != &buffer[0])) | |
| 424 | { | ||
| 425 | ✗ | gate_mem_dealloc(ptr_buffer); | |
| 426 | } | ||
| 427 | ✗ | gate_rasterimage_release(&raster); | |
| 428 | |||
| 429 | ✗ | return result; | |
| 430 | } | ||
| 431 | |||
| 432 | |||
| 433 | 1 | gate_result_t gate_bitmapimage_load(gate_stream_t* srcstream, gate_rasterimage_t* image, gate_enumint_t flags) | |
| 434 | { | ||
| 435 | static gate_size_t const header_min_size = 54; | ||
| 436 | char palette[1024]; | ||
| 437 | 1 | char* ptr_buffer = &palette[0]; | |
| 438 | gate_result_t result; | ||
| 439 | gate_uint32_t filesize; | ||
| 440 | gate_uint32_t creatorid; | ||
| 441 | gate_uint32_t bmpoffset; | ||
| 442 | gate_size_t bufferused; | ||
| 443 | gate_bmp_header_t header; | ||
| 444 | |||
| 445 | gate_size_t linelen; | ||
| 446 | gate_size_t remain; | ||
| 447 | 1 | const gate_enumint_t load_pixel_format = flags & GATE_IMAGE_FLAG_DEPTHMASK; | |
| 448 | |||
| 449 | (void)flags; | ||
| 450 | |||
| 451 | do | ||
| 452 | { | ||
| 453 | 1 | gate_rasterimage_create(image, GATE_IMAGE_PIXELFORMAT_DEFAULT, 0, 0, NULL); | |
| 454 | |||
| 455 | 1 | result = gate_stream_read_block(srcstream, ptr_buffer, header_min_size, &bufferused); | |
| 456 |
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1 | if (GATE_FAILED(result)) |
| 457 | { | ||
| 458 | ✗ | result = GATE_RESULT_INVALIDINPUT; | |
| 459 | ✗ | break; | |
| 460 | } | ||
| 461 |
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1 | if (bufferused < header_min_size || (ptr_buffer[0] != 'B') || (ptr_buffer[1] != 'M')) |
| 462 | { | ||
| 463 | ✗ | result = GATE_RESULT_INVALIDHEADER; | |
| 464 | ✗ | break; | |
| 465 | } | ||
| 466 | 1 | gate_deserialize_uint32_l(&ptr_buffer[2], 4, &filesize); | |
| 467 | 1 | gate_deserialize_uint32_l(&ptr_buffer[6], 4, &creatorid); | |
| 468 | 1 | gate_deserialize_uint32_l(&ptr_buffer[10], 4, &bmpoffset); | |
| 469 | |||
| 470 |
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1 | if (bmpoffset < header_min_size) |
| 471 | { | ||
| 472 | ✗ | result = GATE_RESULT_INVALIDHEADER; | |
| 473 | ✗ | break; | |
| 474 | } | ||
| 475 | |||
| 476 | 1 | gate_deserialize_uint32_l(&ptr_buffer[14], 4, &header.header_sz); | |
| 477 | 1 | gate_deserialize_int32_l(&ptr_buffer[18], 4, &header.width); | |
| 478 | 1 | gate_deserialize_int32_l(&ptr_buffer[22], 4, &header.height); | |
| 479 | 1 | gate_deserialize_uint16_l(&ptr_buffer[26], 2, &header.nplanes); | |
| 480 | 1 | gate_deserialize_uint16_l(&ptr_buffer[28], 2, &header.bitspp); | |
| 481 | 1 | gate_deserialize_uint32_l(&ptr_buffer[30], 4, &header.compress_type); | |
| 482 | 1 | gate_deserialize_uint32_l(&ptr_buffer[34], 4, &header.bmp_bytesz); | |
| 483 | 1 | gate_deserialize_int32_l(&ptr_buffer[38], 4, &header.hres); | |
| 484 | 1 | gate_deserialize_int32_l(&ptr_buffer[42], 4, &header.vres); | |
| 485 | 1 | gate_deserialize_uint32_l(&ptr_buffer[46], 4, &header.ncolors); | |
| 486 | 1 | gate_deserialize_uint32_l(&ptr_buffer[50], 4, &header.nimpcolors); | |
| 487 | |||
| 488 | 1 | result = GATE_RESULT_OK; | |
| 489 |
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1 | switch (header.compress_type) |
| 490 | { | ||
| 491 | 1 | case 0: /* BI_RGB */ | |
| 492 | { | ||
| 493 | /* supported */ | ||
| 494 | 1 | break; | |
| 495 | } | ||
| 496 | ✗ | case 1: /* BI_RLE8 */ | |
| 497 | case 2: /* BI_RLE4 */ | ||
| 498 | case 3: /* BI_BITFIELDS */ | ||
| 499 | case 4: /* BI_JPEG */ | ||
| 500 | case 5: /* BI_PNG */ | ||
| 501 | default: /* unknown */ | ||
| 502 | { | ||
| 503 | /* unsupported encoding */ | ||
| 504 | ✗ | result = GATE_RESULT_NOTSUPPORTED; | |
| 505 | ✗ | break; | |
| 506 | } | ||
| 507 | } | ||
| 508 | |||
| 509 |
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1 | GATE_BREAK_IF_FAILED(result); |
| 510 | |||
| 511 |
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1 | if (bmpoffset > header_min_size) |
| 512 | { | ||
| 513 | ✗ | result = gate_stream_read_block(srcstream, palette, bmpoffset - header_min_size, &bufferused); | |
| 514 | ✗ | if (GATE_FAILED(result)) | |
| 515 | { | ||
| 516 | ✗ | result = GATE_RESULT_INVALIDHEADER; | |
| 517 | ✗ | break; | |
| 518 | } | ||
| 519 | ✗ | if (bufferused < (bmpoffset - header_min_size)) | |
| 520 | { | ||
| 521 | ✗ | result = GATE_RESULT_INVALIDINPUT; | |
| 522 | ✗ | break; | |
| 523 | } | ||
| 524 | } | ||
| 525 | |||
| 526 | 1 | linelen = 0; | |
| 527 | |||
| 528 |
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1 | switch (header.bitspp) |
| 529 | { | ||
| 530 | ✗ | case 1: | |
| 531 | { | ||
| 532 | ✗ | linelen = (header.width + 7) / 8; | |
| 533 | ✗ | break; | |
| 534 | } | ||
| 535 | ✗ | case 4: | |
| 536 | { | ||
| 537 | ✗ | linelen = (header.width + 1) / 2; | |
| 538 | ✗ | break; | |
| 539 | } | ||
| 540 | ✗ | case 8: | |
| 541 | { | ||
| 542 | ✗ | linelen = header.width; | |
| 543 | ✗ | break; | |
| 544 | } | ||
| 545 | ✗ | case 15: | |
| 546 | case 16: | ||
| 547 | { | ||
| 548 | ✗ | linelen = (gate_size_t)gate_math_abs_i32(header.width) * 2; | |
| 549 | ✗ | break; | |
| 550 | } | ||
| 551 | ✗ | case 24: | |
| 552 | { | ||
| 553 | ✗ | linelen = (gate_size_t)gate_math_abs_i32(header.width) * 3; | |
| 554 | ✗ | break; | |
| 555 | } | ||
| 556 | 1 | case 32: | |
| 557 | { | ||
| 558 | 1 | linelen = (gate_size_t)gate_math_abs_i32(header.width) * 4; | |
| 559 | 1 | break; | |
| 560 | } | ||
| 561 | } | ||
| 562 | |||
| 563 | 1 | remain = linelen % 4; | |
| 564 |
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1 | if (remain != 0) |
| 565 | { | ||
| 566 | ✗ | linelen += 4 - remain; | |
| 567 | } | ||
| 568 | |||
| 569 |
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1 | switch (load_pixel_format) |
| 570 | { | ||
| 571 | ✗ | case GATE_IMAGE_FLAG_DEPTH_8GRAY: result = load_bitmap_generic(srcstream, &header, palette, linelen, GATE_IMAGE_PIXELFORMAT_GRAY8, image); break; | |
| 572 | ✗ | case GATE_IMAGE_FLAG_DEPTH_24RGB: result = load_bitmap_generic(srcstream, &header, palette, linelen, GATE_IMAGE_PIXELFORMAT_RGB24, image); break; | |
| 573 | ✗ | case GATE_IMAGE_FLAG_DEPTH_15RGB: result = load_bitmap_generic(srcstream, &header, palette, linelen, GATE_IMAGE_PIXELFORMAT_RGB555, image); break; | |
| 574 | ✗ | case GATE_IMAGE_FLAG_DEPTH_4COL: | |
| 575 | ✗ | case GATE_IMAGE_FLAG_DEPTH_8COL: result = load_bitmap_generic(srcstream, &header, palette, linelen, GATE_IMAGE_PIXELFORMAT_PAL8, image); break; | |
| 576 | 1 | case GATE_IMAGE_FLAG_DEPTH_32RGBA: | |
| 577 | case GATE_IMAGE_FLAG_DEPTH_DEF: | ||
| 578 | 1 | default: result = load_bitmap_as_rgba_image(srcstream, &header, palette, linelen, image); break; | |
| 579 | } | ||
| 580 | |||
| 581 | } while (0); | ||
| 582 | |||
| 583 | 1 | return result; | |
| 584 | } | ||
| 585 | |||
| 586 | |||
| 587 | ✗ | static void load_bgra_line(gate_uint8_t* bmp_buffer, gate_uint8_t const* ptr_line, gate_size_t length) | |
| 588 | { | ||
| 589 | ✗ | gate_mem_copy(bmp_buffer, ptr_line, length * 4); | |
| 590 | ✗ | } | |
| 591 | |||
| 592 | 1 | gate_result_t gate_bitmapimage_save(gate_rasterimage_t const* image, gate_stream_t* deststream, gate_enumint_t flags) | |
| 593 | { | ||
| 594 | gate_result_t result; | ||
| 595 | gate_size_t byteswritten; | ||
| 596 | char buffer[12288]; | ||
| 597 | 1 | char* ptrbuffer = &buffer[0]; | |
| 598 | |||
| 599 | 1 | char header[54] = GATE_INIT_EMPTY; | |
| 600 | gate_bmp_header_t bmp; | ||
| 601 | 1 | const gate_size_t bmp_linelen = (gate_size_t)image->width * 4; /* 4 bytes per pixel */ | |
| 602 | 1 | const gate_size_t bmp_datasize = bmp_linelen * image->height; | |
| 603 | 1 | const gate_size_t img_linelen = | |
| 604 | 1 | (gate_size_t)(image->width * (unsigned)image->bits_per_pixel / 8u + (unsigned)image->line_padding); | |
| 605 | gate_uint8_t const* ptrline; | ||
| 606 | gate_uint8_t* ptrbyte; | ||
| 607 | |||
| 608 | 1 | const gate_uint32_t filesize = (gate_uint32_t)bmp_datasize + 54; | |
| 609 | 1 | gate_uint32_t creator = 0; | |
| 610 | 1 | gate_uint32_t offset = 54; | |
| 611 | |||
| 612 | gate_uint32_t y; | ||
| 613 | 1 | void(*line_writer)(gate_uint8_t*, gate_uint8_t const*, gate_size_t) = NULL; | |
| 614 | |||
| 615 | (void)flags; | ||
| 616 | |||
| 617 | 1 | bmp.header_sz = 40; | |
| 618 | 1 | bmp.width = (gate_int32_t)image->width; | |
| 619 | 1 | bmp.height = (gate_int32_t)image->height; | |
| 620 | 1 | bmp.nplanes = 1; | |
| 621 | 1 | bmp.bitspp = 32; | |
| 622 | 1 | bmp.compress_type = 0; /* no compression */ | |
| 623 | 1 | bmp.bmp_bytesz = (gate_uint32_t)bmp_datasize; | |
| 624 | 1 | bmp.hres = 0; | |
| 625 | 1 | bmp.vres = 0; | |
| 626 | 1 | bmp.ncolors = 0; | |
| 627 | 1 | bmp.nimpcolors = 0; | |
| 628 | |||
| 629 | 1 | header[0] = 'B'; | |
| 630 | 1 | header[1] = 'M'; | |
| 631 | 1 | gate_serialize_uint32_l(&header[2], 4, &filesize); | |
| 632 | 1 | gate_serialize_uint32_l(&header[6], 4, &creator); | |
| 633 | 1 | gate_serialize_uint32_l(&header[10], 4, &offset); | |
| 634 | |||
| 635 | 1 | gate_serialize_uint32_l(&header[14], 4, &bmp.header_sz); | |
| 636 | 1 | gate_serialize_int32_l(&header[18], 4, &bmp.width); | |
| 637 | 1 | gate_serialize_int32_l(&header[22], 4, &bmp.height); | |
| 638 | 1 | gate_serialize_uint16_l(&header[26], 2, &bmp.nplanes); | |
| 639 | 1 | gate_serialize_uint16_l(&header[28], 2, &bmp.bitspp); | |
| 640 | 1 | gate_serialize_uint32_l(&header[30], 4, &bmp.compress_type); | |
| 641 | 1 | gate_serialize_uint32_l(&header[34], 4, &bmp.bmp_bytesz); | |
| 642 | |||
| 643 | 1 | gate_serialize_int32_l(&header[38], 4, &bmp.hres); | |
| 644 | 1 | gate_serialize_int32_l(&header[42], 4, &bmp.vres); | |
| 645 | 1 | gate_serialize_uint32_l(&header[46], 4, &bmp.ncolors); | |
| 646 | 1 | gate_serialize_uint32_l(&header[50], 4, &bmp.nimpcolors); | |
| 647 | |||
| 648 | do | ||
| 649 | { | ||
| 650 |
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1 | switch (image->pixel_format) |
| 651 | { | ||
| 652 | ✗ | case GATE_IMAGE_PIXELFORMAT_RGBA: | |
| 653 | ✗ | case GATE_IMAGE_PIXELFORMAT_RGB32: line_writer = &gate_color_convert_bgra_from_rgba_32; break; | |
| 654 | ✗ | case GATE_IMAGE_PIXELFORMAT_BGRA: | |
| 655 | ✗ | case GATE_IMAGE_PIXELFORMAT_BGR32: line_writer = &load_bgra_line; break; | |
| 656 | |||
| 657 | 1 | case GATE_IMAGE_PIXELFORMAT_RGB24: line_writer = &gate_color_convert_bgra_from_rgb_24; break; | |
| 658 | ✗ | case GATE_IMAGE_PIXELFORMAT_BGR24: line_writer = &gate_color_convert_bgra_from_bgr_24; break; | |
| 659 | |||
| 660 | ✗ | case GATE_IMAGE_PIXELFORMAT_RGB555: line_writer = &gate_color_convert_bgra_from_rgb_15; break; | |
| 661 | ✗ | case GATE_IMAGE_PIXELFORMAT_RGB565: line_writer = &gate_color_convert_bgra_from_rgb_16; break; | |
| 662 | ✗ | case GATE_IMAGE_PIXELFORMAT_ARGB4: line_writer = &gate_color_convert_bgra_from_argb_16; break; | |
| 663 | ✗ | case GATE_IMAGE_PIXELFORMAT_YUV2: line_writer = &gate_color_convert_bgra_from_yuv2_16; break; | |
| 664 | |||
| 665 | ✗ | case GATE_IMAGE_PIXELFORMAT_PAL8: line_writer = &gate_color_convert_bgra_from_pal_8; break; | |
| 666 | ✗ | case GATE_IMAGE_PIXELFORMAT_GRAY8: line_writer = &gate_color_convert_bgra_from_gray_8; break; | |
| 667 | ✗ | default: | |
| 668 | ✗ | break; | |
| 669 | } | ||
| 670 | |||
| 671 |
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1 | if (line_writer == NULL) |
| 672 | { | ||
| 673 | ✗ | result = GATE_RESULT_INVALIDCONTENT; | |
| 674 | ✗ | break; | |
| 675 | } | ||
| 676 | |||
| 677 |
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1 | if (bmp_linelen > sizeof(buffer)) |
| 678 | { | ||
| 679 | ✗ | ptrbuffer = gate_mem_alloc(bmp_linelen); | |
| 680 | ✗ | if (ptrbuffer == NULL) | |
| 681 | { | ||
| 682 | ✗ | result = GATE_RESULT_OUTOFMEMORY; | |
| 683 | ✗ | break; | |
| 684 | } | ||
| 685 | } | ||
| 686 | |||
| 687 | 1 | result = gate_stream_write_block(deststream, header, sizeof(header), &byteswritten); | |
| 688 |
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1 | if (GATE_FAILED(result)) |
| 689 | { | ||
| 690 | ✗ | result = GATE_RESULT_INVALIDOUTPUT; | |
| 691 | ✗ | break; | |
| 692 | } | ||
| 693 | |||
| 694 | 1 | ptrline = (gate_uint8_t const*)gate_rasterimage_get_line_ptr(image, (image->height - 1)); | |
| 695 | |||
| 696 |
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33 | for (y = 0; y != image->height; ++y) |
| 697 | { | ||
| 698 | 32 | ptrbyte = (gate_uint8_t*)ptrbuffer; | |
| 699 | 32 | line_writer(ptrbyte, ptrline, image->width); | |
| 700 | |||
| 701 | 32 | result = gate_stream_write_block(deststream, ptrbuffer, bmp_linelen, &byteswritten); | |
| 702 |
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32 | if (GATE_FAILED(result)) |
| 703 | { | ||
| 704 | ✗ | result = GATE_RESULT_INVALIDOUTPUT; | |
| 705 | ✗ | break; | |
| 706 | } | ||
| 707 | 32 | GATE_DEBUG_ASSERT(bmp_linelen == byteswritten); | |
| 708 | |||
| 709 | 32 | ptrline -= img_linelen; | |
| 710 | } | ||
| 711 | } while (0); | ||
| 712 | |||
| 713 |
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1 | if ((ptrbuffer != &buffer[0]) && (ptrbuffer != NULL)) |
| 714 | { | ||
| 715 | ✗ | gate_mem_dealloc(ptrbuffer); | |
| 716 | } | ||
| 717 | |||
| 718 | 1 | return result; | |
| 719 | } | ||
| 720 | |||
| 721 |