SDL_nullframebuffer.c
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#if SDL_VIDEO_DRIVER_DUMMY
#include "../SDL_sysvideo.h"
#include "SDL_nullframebuffer_c.h"
#define DUMMY_SURFACE "_SDL_DummySurface"
int SDL_DUMMY_CreateWindowFramebuffer(_THIS, SDL_Window * window, Uint32 * format, void ** pixels, int *pitch)
{
SDL_Surface *surface;
const Uint32 surface_format = SDL_PIXELFORMAT_RGB888;
int w, h;
int bpp;
Uint32 Rmask, Gmask, Bmask, Amask;
/* Free the old framebuffer surface */
surface = (SDL_Surface *) SDL_GetWindowData(window, DUMMY_SURFACE);
SDL_FreeSurface(surface);
/* Create a new one */
SDL_PixelFormatEnumToMasks(surface_format, &bpp, &Rmask, &Gmask, &Bmask, &Amask);
SDL_GetWindowSize(window, &w, &h);
surface = SDL_CreateRGBSurface(0, w, h, bpp, Rmask, Gmask, Bmask, Amask);
if (!surface) {
return -1;
}
/* Save the info and return! */
SDL_SetWindowData(window, DUMMY_SURFACE, surface);
*format = surface_format;
*pixels = surface->pixels;
*pitch = surface->pitch;
return 0;
}
int SDL_DUMMY_UpdateWindowFramebuffer(_THIS, SDL_Window * window, const SDL_Rect * rects, int numrects)
{
static int frame_number;
SDL_Surface *surface;
surface = (SDL_Surface *) SDL_GetWindowData(window, DUMMY_SURFACE);
if (!surface) {
return SDL_SetError("Couldn't find dummy surface for window");
}
/* Send the data to the display */
if (SDL_getenv("SDL_VIDEO_DUMMY_SAVE_FRAMES")) {
char file[128];
SDL_snprintf(file, sizeof(file), "SDL_window%d-%8.8d.bmp",
SDL_GetWindowID(window), ++frame_number);
SDL_SaveBMP(surface, file);
}
return 0;
}
void SDL_DUMMY_DestroyWindowFramebuffer(_THIS, SDL_Window * window)
{
SDL_Surface *surface;
surface = (SDL_Surface *) SDL_SetWindowData(window, DUMMY_SURFACE, NULL);
SDL_FreeSurface(surface);
}
#endif /* SDL_VIDEO_DRIVER_DUMMY */
/* vi: set ts=4 sw=4 expandtab: */
format
GLint GLint GLsizei GLsizei GLsizei GLint GLenum format
Definition: SDL_opengl.h:1572
Uint32
uint32_t Uint32
Definition: SDL_stdinc.h:203
SDL_DUMMY_CreateWindowFramebuffer
int SDL_DUMMY_CreateWindowFramebuffer(_THIS, SDL_Window *window, Uint32 *format, void **pixels, int *pitch)
SDL_GetWindowData
#define SDL_GetWindowData
Definition: SDL_dynapi_overrides.h:523
SDL_Surface
A collection of pixels used in software blitting.
Definition: SDL_surface.h:70
SDL_PIXELFORMAT_RGB888
@ SDL_PIXELFORMAT_RGB888
Definition: SDL_pixels.h:236
NULL
#define NULL
Definition: begin_code.h:167
surface
EGLSurface surface
Definition: eglext.h:248
SDL_GetWindowID
#define SDL_GetWindowID
Definition: SDL_dynapi_overrides.h:516
SDL_nullframebuffer_c.h
h
GLfloat GLfloat GLfloat GLfloat h
Definition: SDL_opengl_glext.h:1946
SDL_Window
The type used to identify a window.
Definition: SDL_sysvideo.h:73
SDL_GetWindowSize
#define SDL_GetWindowSize
Definition: SDL_dynapi_overrides.h:527
SDL_DUMMY_UpdateWindowFramebuffer
int SDL_DUMMY_UpdateWindowFramebuffer(_THIS, SDL_Window *window, const SDL_Rect *rects, int numrects)
window
EGLSurface EGLNativeWindowType * window
Definition: eglext.h:1025
SDL_SetWindowData
#define SDL_SetWindowData
Definition: SDL_dynapi_overrides.h:522
SDL_FreeSurface
#define SDL_FreeSurface
Definition: SDL_dynapi_overrides.h:446
SDL_PixelFormatEnumToMasks
#define SDL_PixelFormatEnumToMasks
Definition: SDL_dynapi_overrides.h:278
_THIS
#define _THIS
Definition: SDL_alsa_audio.h:31
pixels
GLint GLint GLsizei GLsizei GLsizei GLint GLenum GLenum const GLvoid * pixels
Definition: SDL_opengl.h:1572
SDL_CreateRGBSurface
#define SDL_CreateRGBSurface
Definition: SDL_dynapi_overrides.h:444
SDL_getenv
#define SDL_getenv
Definition: SDL_dynapi_overrides.h:378
SDL_SetError
#define SDL_SetError
Definition: SDL_dynapi_overrides.h:30
SDL_snprintf
#define SDL_snprintf
Definition: SDL_dynapi_overrides.h:40
SDL_Rect
A rectangle, with the origin at the upper left (integer).
Definition: SDL_rect.h:77
SDL_SaveBMP
#define SDL_SaveBMP(surface, file)
Definition: SDL_surface.h:224
rects
EGLSurface EGLint * rects
Definition: eglext.h:282
SDL_DUMMY_DestroyWindowFramebuffer
void SDL_DUMMY_DestroyWindowFramebuffer(_THIS, SDL_Window *window)
w
GLubyte GLubyte GLubyte GLubyte w
Definition: SDL_opengl_glext.h:731