src/video/dummy/SDL_nullframebuffer.c
author Ryan C. Gordon <icculus@icculus.org>
Mon, 09 Apr 2012 23:55:43 -0400
changeset 6305 601b0e251822
parent 6138 4c64952a58fb
child 6885 700f1b25f77f
permissions -rwxr-xr-x
SDL_ExitProcess() was ignoring exit code parameter.
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 */
    21 #include "SDL_config.h"
    22 
    23 #if SDL_VIDEO_DRIVER_DUMMY
    24 
    25 #include "../SDL_sysvideo.h"
    26 #include "SDL_nullframebuffer_c.h"
    27 
    28 
    29 #define DUMMY_SURFACE   "_SDL_DummySurface"
    30 
    31 int SDL_DUMMY_CreateWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format, void ** pixels, int *pitch)
    32 {
    33     SDL_Surface *surface;
    34     const Uint32 surface_format = SDL_PIXELFORMAT_RGB888;
    35     int w, h;
    36     int bpp;
    37     Uint32 Rmask, Gmask, Bmask, Amask;
    38 
    39     /* Free the old framebuffer surface */
    40     surface = (SDL_Surface *) SDL_GetWindowData(window, DUMMY_SURFACE);
    41     if (surface) {
    42         SDL_FreeSurface(surface);
    43     }
    44 
    45     /* Create a new one */
    46     SDL_PixelFormatEnumToMasks(surface_format, &bpp, &Rmask, &Gmask, &Bmask, &Amask);
    47     SDL_GetWindowSize(window, &w, &h);
    48     surface = SDL_CreateRGBSurface(0, w, h, bpp, Rmask, Gmask, Bmask, Amask);
    49     if (!surface) {
    50         return -1;
    51     }
    52 
    53     /* Save the info and return! */
    54     SDL_SetWindowData(window, DUMMY_SURFACE, surface);
    55     *format = surface_format;
    56     *pixels = surface->pixels;
    57     *pitch = surface->pitch;
    58     return 0;
    59 }
    60 
    61 int SDL_DUMMY_UpdateWindowFramebuffer(_THIS, SDL_Window * window, SDL_Rect * rects, int numrects)
    62 {
    63     static int frame_number;
    64     SDL_Surface *surface;
    65 
    66     surface = (SDL_Surface *) SDL_GetWindowData(window, DUMMY_SURFACE);
    67     if (!surface) {
    68         SDL_SetError("Couldn't find dummy surface for window");
    69         return -1;
    70     }
    71 
    72     /* Send the data to the display */
    73     if (SDL_getenv("SDL_VIDEO_DUMMY_SAVE_FRAMES")) {
    74         char file[128];
    75         SDL_snprintf(file, sizeof(file), "SDL_window%d-%8.8d.bmp",
    76                      SDL_GetWindowID(window), ++frame_number);
    77         SDL_SaveBMP(surface, file);
    78     }
    79     return 0;
    80 }
    81 
    82 void SDL_DUMMY_DestroyWindowFramebuffer(_THIS, SDL_Window * window)
    83 {
    84     SDL_Surface *surface;
    85 
    86     surface = (SDL_Surface *) SDL_SetWindowData(window, DUMMY_SURFACE, NULL);
    87     if (surface) {
    88         SDL_FreeSurface(surface);
    89     }
    90 }
    91 
    92 #endif /* SDL_VIDEO_DRIVER_DUMMY */
    93 
    94 /* vi: set ts=4 sw=4 expandtab: */