SDL 2.0
SDL_nullframebuffer.c
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1/*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2019 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_internal.h"
22
23#if SDL_VIDEO_DRIVER_DUMMY
24
25#include "../SDL_sysvideo.h"
27
28
29#define DUMMY_SURFACE "_SDL_DummySurface"
30
32{
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);
42
43 /* Create a new one */
44 SDL_PixelFormatEnumToMasks(surface_format, &bpp, &Rmask, &Gmask, &Bmask, &Amask);
46 surface = SDL_CreateRGBSurface(0, w, h, bpp, Rmask, Gmask, Bmask, Amask);
47 if (!surface) {
48 return -1;
49 }
50
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}
58
60{
61 static int frame_number;
63
64 surface = (SDL_Surface *) SDL_GetWindowData(window, DUMMY_SURFACE);
65 if (!surface) {
66 return SDL_SetError("Couldn't find dummy surface for window");
67 }
68
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}
78
80{
82
83 surface = (SDL_Surface *) SDL_SetWindowData(window, DUMMY_SURFACE, NULL);
85}
86
87#endif /* SDL_VIDEO_DRIVER_DUMMY */
88
89/* vi: set ts=4 sw=4 expandtab: */
#define _THIS
#define SDL_SetError
#define SDL_GetWindowSize
#define SDL_GetWindowData
#define SDL_GetWindowID
#define SDL_getenv
#define SDL_PixelFormatEnumToMasks
#define SDL_SetWindowData
#define SDL_CreateRGBSurface
#define SDL_FreeSurface
#define SDL_snprintf
int SDL_DUMMY_CreateWindowFramebuffer(_THIS, SDL_Window *window, Uint32 *format, void **pixels, int *pitch)
int SDL_DUMMY_UpdateWindowFramebuffer(_THIS, SDL_Window *window, const SDL_Rect *rects, int numrects)
void SDL_DUMMY_DestroyWindowFramebuffer(_THIS, SDL_Window *window)
GLint GLint GLsizei GLsizei GLsizei GLint GLenum GLenum const GLvoid * pixels
Definition: SDL_opengl.h:1572
GLint GLint GLsizei GLsizei GLsizei GLint GLenum format
Definition: SDL_opengl.h:1572
GLfloat GLfloat GLfloat GLfloat h
GLubyte GLubyte GLubyte GLubyte w
@ SDL_PIXELFORMAT_RGB888
Definition: SDL_pixels.h:236
uint32_t Uint32
Definition: SDL_stdinc.h:203
#define SDL_SaveBMP(surface, file)
Definition: SDL_surface.h:224
#define NULL
Definition: begin_code.h:167
EGLSurface surface
Definition: eglext.h:248
EGLSurface EGLNativeWindowType * window
Definition: eglext.h:1025
EGLSurface EGLint * rects
Definition: eglext.h:282
A rectangle, with the origin at the upper left (integer).
Definition: SDL_rect.h:78
A collection of pixels used in software blitting.
Definition: SDL_surface.h:71
The type used to identify a window.
Definition: SDL_sysvideo.h:74