All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Properties Friends Macros Groups Pages
Go to the documentation of this file.
1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
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.
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:
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"
25 #include "../SDL_sysvideo.h"
26 #include "SDL_nullframebuffer_c.h"
29 #define DUMMY_SURFACE "_SDL_DummySurface"
31 int SDL_DUMMY_CreateWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format, void ** pixels, int *pitch)
32 {
34  const Uint32 surface_format = SDL_PIXELFORMAT_RGB888;
35  int w, h;
36  int bpp;
37  Uint32 Rmask, Gmask, Bmask, Amask;
39  /* Free the old framebuffer surface */
40  surface = (SDL_Surface *) SDL_GetWindowData(window, DUMMY_SURFACE);
41  SDL_FreeSurface(surface);
43  /* Create a new one */
44  SDL_PixelFormatEnumToMasks(surface_format, &bpp, &Rmask, &Gmask, &Bmask, &Amask);
45  SDL_GetWindowSize(window, &w, &h);
46  surface = SDL_CreateRGBSurface(0, w, h, bpp, Rmask, Gmask, Bmask, Amask);
47  if (!surface) {
48  return -1;
49  }
51  /* Save the info and return! */
52  SDL_SetWindowData(window, DUMMY_SURFACE, surface);
53  *format = surface_format;
54  *pixels = surface->pixels;
55  *pitch = surface->pitch;
56  return 0;
57 }
59 int SDL_DUMMY_UpdateWindowFramebuffer(_THIS, SDL_Window * window, const SDL_Rect * rects, int numrects)
60 {
61  static int frame_number;
64  surface = (SDL_Surface *) SDL_GetWindowData(window, DUMMY_SURFACE);
65  if (!surface) {
66  return SDL_SetError("Couldn't find dummy surface for window");
67  }
69  /* Send the data to the display */
70  if (SDL_getenv("SDL_VIDEO_DUMMY_SAVE_FRAMES")) {
71  char file[128];
72  SDL_snprintf(file, sizeof(file), "SDL_window%d-%8.8d.bmp",
73  SDL_GetWindowID(window), ++frame_number);
74  SDL_SaveBMP(surface, file);
75  }
76  return 0;
77 }
80 {
83  surface = (SDL_Surface *) SDL_SetWindowData(window, DUMMY_SURFACE, NULL);
84  SDL_FreeSurface(surface);
85 }
87 #endif /* SDL_VIDEO_DRIVER_DUMMY */
89 /* vi: set ts=4 sw=4 expandtab: */
DECLSPEC void SDLCALL SDL_FreeSurface(SDL_Surface *surface)
Definition: SDL_surface.c:1053
DECLSPEC SDL_Surface *SDLCALL SDL_CreateRGBSurface(Uint32 flags, int width, int height, int depth, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
Definition: SDL_surface.c:35
GLfloat GLfloat GLfloat GLfloat h
Definition: glew.h:7294
#define NULL
Definition: ftobjs.h:61
DECLSPEC int SDLCALL SDL_snprintf(char *text, size_t maxlen, const char *fmt,...)
Definition: SDL_string.c:1277
EGLSurface surface
Definition: eglext.h:74
A collection of pixels used in software blitting.
Definition: SDL_surface.h:69
FILE * file
Definition: visualinfo.c:88
#define SDL_SaveBMP(surface, file)
Definition: SDL_surface.h:199
DECLSPEC void SDLCALL SDL_GetWindowSize(SDL_Window *window, int *w, int *h)
Get the size of a window&#39;s client area.
Definition: SDL_video.c:1638
uint32_t Uint32
An unsigned 32-bit integer type.
Definition: SDL_stdinc.h:145
void SDL_DUMMY_DestroyWindowFramebuffer(_THIS, SDL_Window *window)
int SDL_DUMMY_UpdateWindowFramebuffer(_THIS, SDL_Window *window, const SDL_Rect *rects, int numrects)
void * pixels
Definition: SDL_surface.h:75
#define _THIS
DECLSPEC void *SDLCALL SDL_SetWindowData(SDL_Window *window, const char *name, void *userdata)
Associate an arbitrary named pointer with a window.
Definition: SDL_video.c:1467
DECLSPEC Uint32 SDLCALL SDL_GetWindowID(SDL_Window *window)
Get the numeric ID of a window, for logging purposes.
Definition: SDL_video.c:1385
GLint GLenum GLsizei GLsizei GLsizei GLint GLenum format
Definition: gl2ext.h:845
DECLSPEC int SDLCALL SDL_SetError(const char *fmt,...)
Definition: SDL_error.c:53
DECLSPEC void *SDLCALL SDL_GetWindowData(SDL_Window *window, const char *name)
Retrieve the data pointer associated with a window.
Definition: SDL_video.c:1514
GLint GLenum GLsizei GLsizei GLsizei GLint GLenum GLenum const GLvoid * pixels
Definition: gl2ext.h:845
DECLSPEC SDL_bool SDLCALL SDL_PixelFormatEnumToMasks(Uint32 format, int *bpp, Uint32 *Rmask, Uint32 *Gmask, Uint32 *Bmask, Uint32 *Amask)
Convert one of the enumerated pixel formats to a bpp and RGBA masks.
Definition: SDL_pixels.c:132
GLint GLint GLint GLint GLint w
Definition: gl2ext.h:1215
DECLSPEC char *SDLCALL SDL_getenv(const char *name)
Definition: SDL_getenv.c:179
int SDL_DUMMY_CreateWindowFramebuffer(_THIS, SDL_Window *window, Uint32 *format, void **pixels, int *pitch)
A rectangle, with the origin at the upper left.
Definition: SDL_rect.h:63