83 lines
1.7 KiB
C
83 lines
1.7 KiB
C
#include "config.h"
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#ifndef FXLINK_DISABLE_SDL2
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#include "sdl2.h"
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#include "util.h"
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static SDL_Window *window = NULL;
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static int init(size_t width, size_t height)
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{
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if(!SDL_WasInit(SDL_INIT_VIDEO)) {
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int rc = SDL_Init(SDL_INIT_VIDEO);
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if(rc < 0)
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return err("Cannot initialize SDL: %s\n", SDL_GetError());
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}
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window = SDL_CreateWindow("fxlink", SDL_WINDOWPOS_CENTERED,
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SDL_WINDOWPOS_CENTERED, width, height, 0);
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return 0;
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}
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__attribute__((destructor))
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static void quit(void)
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{
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if(!window)
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return;
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SDL_DestroyWindow(window);
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window = NULL;
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}
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/* Generate an RGB888 surface from image data. */
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static SDL_Surface *surface_for_image(uint8_t **RGB888_rows, int width,
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int height)
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{
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/* Little endian setup for RGB */
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SDL_Surface *s = SDL_CreateRGBSurface(0, width, height, 24,
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0x000000ff, 0x0000ff00, 0x0000ff00, 0);
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if(!s) {
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err("Cannot create surface for image");
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return NULL;
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}
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for(int i = 0; i < height; i++)
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memcpy(s->pixels + i * s->pitch, RGB888_rows[i], width * 3);
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return s;
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}
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void sdl2_stream(uint8_t **RGB888_rows, int width, int height)
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{
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if(!window && init(width, height))
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return;
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int current_w, current_h;
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SDL_GetWindowSize(window, ¤t_w, ¤t_h);
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if(current_w != width || current_h != height)
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SDL_SetWindowSize(window, width, height);
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SDL_Surface *src = surface_for_image(RGB888_rows, width, height);
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if(!src)
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return;
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SDL_Surface *dst = SDL_GetWindowSurface(window);
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SDL_BlitSurface(src, NULL, dst, NULL);
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SDL_FreeSurface(src);
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SDL_UpdateWindowSurface(window);
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}
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void sdl2_tick(void)
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{
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if(!window)
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return;
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SDL_Event e;
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while(SDL_PollEvent(&e)) {
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if(e.type == SDL_QUIT)
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quit();
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}
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}
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#endif /* FXLINK_DISABLE_SDL2 */
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