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annotate src/video/dummy/SDL_nullframebuffer.c @ 5267:b530ef003506

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Happy 2011! :)
author Sam Lantinga <slouken@libsdl.org>
date Fri, 11 Feb 2011 22:37:15 -0800
parents 4d39eeaad00b
children
rev   line source
5169
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface.
Sam Lantinga <slouken@libsdl.org>
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1 /*
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface.
Sam Lantinga <slouken@libsdl.org>
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2 SDL - Simple DirectMedia Layer
5267
b530ef003506 Happy 2011! :)
Sam Lantinga <slouken@libsdl.org>
parents: 5169
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3 Copyright (C) 1997-2011 Sam Lantinga
5169
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4
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface.
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface.
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface.
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface.
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface.
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19 Sam Lantinga
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface.
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #include "../SDL_sysvideo.h"
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25
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26
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface.
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27 #define DUMMY_SURFACE "_SDL_DummySurface"
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28
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29 int SDL_DUMMY_CreateWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format, void ** pixels, int *pitch)
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30 {
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31 SDL_Surface *surface;
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32 const Uint32 surface_format = SDL_PIXELFORMAT_RGB888;
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33 int w, h;
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34 int bpp;
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35 Uint32 Rmask, Gmask, Bmask, Amask;
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36
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37 /* Free the old framebuffer surface */
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38 surface = (SDL_Surface *) SDL_GetWindowData(window, DUMMY_SURFACE);
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface.
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39 if (surface) {
4d39eeaad00b Added a way to get a framebuffer interface for a window, and also a way to create a software renderer for an arbitrary surface.
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40 SDL_FreeSurface(surface);
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41 }
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42
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43 /* Create a new one */
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44 SDL_PixelFormatEnumToMasks(surface_format, &bpp, &Rmask, &Gmask, &Bmask, &Amask);
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45 SDL_GetWindowSize(window, &w, &h);
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46 surface = SDL_CreateRGBSurface(0, w, h, bpp, Rmask, Gmask, Bmask, Amask);
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47 if (!surface) {
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48 return -1;
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49 }
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50
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51 /* Save the info and return! */
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52 SDL_SetWindowData(window, DUMMY_SURFACE, surface);
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53 *format = surface_format;
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54 *pixels = surface->pixels;
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55 *pitch = surface->pitch;
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56 return 0;
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57 }
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58
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59 int SDL_DUMMY_UpdateWindowFramebuffer(_THIS, SDL_Window * window, int numrects, SDL_Rect * rects)
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60 {
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61 static int frame_number;
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62 SDL_Surface *surface;
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63
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64 surface = (SDL_Surface *) SDL_GetWindowData(window, DUMMY_SURFACE);
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65 if (!surface) {
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66 SDL_SetError("Couldn't find dummy surface for window");
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67 return -1;
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68 }
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69
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70 /* Send the data to the display */
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71 if (SDL_getenv("SDL_VIDEO_DUMMY_SAVE_FRAMES")) {
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72 char file[128];
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73 SDL_snprintf(file, sizeof(file), "SDL_window%d-%8.8d.bmp",
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74 SDL_GetWindowID(window), ++frame_number);
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75 SDL_SaveBMP(surface, file);
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76 }
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77 return 0;
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78 }
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79
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80 void SDL_DUMMY_DestroyWindowFramebuffer(_THIS, SDL_Window * window)
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81 {
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82 SDL_Surface *surface;
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83
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84 surface = (SDL_Surface *) SDL_SetWindowData(window, DUMMY_SURFACE, NULL);
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85 if (surface) {
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86 SDL_FreeSurface(surface);
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87 }
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88 }
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89
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90 /* vi: set ts=4 sw=4 expandtab: */