Mercurial > molko
annotate src/libmlk-core/core/image.c @ 320:8f9937403749
misc: improve loading of data
author | David Demelier <markand@malikania.fr> |
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date | Fri, 01 Oct 2021 20:30:00 +0200 |
parents | libmlk-core/core/image.c@d01e83210ca2 |
children | 64aff0afc8ac |
rev | line source |
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1 /* |
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2 * image.c -- basic image management |
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3 * |
314 | 4 * Copyright (c) 2020-2021 David Demelier <markand@malikania.fr> |
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5 * |
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6 * Permission to use, copy, modify, and/or distribute this software for any |
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7 * purpose with or without fee is hereby granted, provided that the above |
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8 * copyright notice and this permission notice appear in all copies. |
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9 * |
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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17 */ |
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18 |
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19 #include <assert.h> |
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20 |
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21 #include <SDL_image.h> |
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22 |
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23 #include "error.h" |
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24 #include "texture.h" |
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25 #include "window.h" |
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26 #include "window_p.h" |
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27 |
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28 static void |
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29 dimensions(struct texture *tex) |
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30 { |
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31 int w, h; |
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32 |
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33 if (SDL_QueryTexture(tex->handle, NULL, NULL, &w, &h) < 0) |
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34 tex->w = tex->h = 0; |
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35 else { |
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36 tex->w = w; |
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37 tex->h = h; |
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38 } |
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39 } |
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40 |
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41 int |
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42 image_open(struct texture *tex, const char *path) |
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43 { |
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44 assert(tex); |
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45 assert(path); |
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46 |
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47 if (!(tex->handle = IMG_LoadTexture(RENDERER(), path))) |
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48 return errorf("%s", SDL_GetError()); |
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49 |
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50 dimensions(tex); |
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51 |
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52 return 0; |
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53 } |
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54 |
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55 int |
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56 image_openmem(struct texture *tex, const void *buffer, size_t size) |
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57 { |
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58 assert(buffer); |
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59 |
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60 SDL_RWops *ops = SDL_RWFromConstMem(buffer, size); |
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61 |
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62 if (!ops || !(tex->handle = IMG_LoadTexture_RW(RENDERER(), ops, 1))) |
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63 return errorf("%s", SDL_GetError()); |
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64 |
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65 dimensions(tex); |
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66 |
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67 return 0; |
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68 } |