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working-ish SDL implementation

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itsmattkc 2024-10-21 13:32:35 -07:00
parent 8401e31f17
commit 8241f0d459
1 changed files with 36 additions and 2 deletions
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38
rpi/main.c
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@ -115,7 +115,7 @@ int main(int argc, const char **argv)
return 1;
}
SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
if (!renderer) {
fprintf(stderr, "Failed to create renderer: %s\n", SDL_GetError());
return 1;
@ -184,6 +184,21 @@ int main(int argc, const char **argv)
int delay = 16;
int dst_w, dst_h;
SDL_GetRendererOutputSize(renderer, &dst_w, &dst_h);
SDL_Rect center_rect;
center_rect.w = SCREEN_WIDTH;
center_rect.h = SCREEN_HEIGHT;
center_rect.x = dst_w/2 - SCREEN_WIDTH/2;
center_rect.y = dst_h/2 - SCREEN_HEIGHT/2;
Uint32 start_ticks = SDL_GetTicks();
#define TICK_MAX 30
Uint32 tick_deltas[TICK_MAX];
size_t tick_delta_index = 0;
while (1) {
SDL_Event event;
if (SDL_PollEvent(&event)) {
@ -197,19 +212,38 @@ int main(int argc, const char **argv)
SDL_LockMutex(decoding_mutex);
if (decoding_ready) {
#ifndef NO_DISPLAY
Uint32 ticks = SDL_GetTicks();
SDL_UpdateYUVTexture(main_texture, NULL,
present_frame->data[0], present_frame->linesize[0],
present_frame->data[1], present_frame->linesize[1],
present_frame->data[2], present_frame->linesize[2]
);
fprintf(stderr, "UpdateYUVTexture took: %i\n", SDL_GetTicks() - ticks);
#endif
}
SDL_UnlockMutex(decoding_mutex);
#ifndef NO_DISPLAY
SDL_RenderCopy(renderer, main_texture, NULL, NULL);
SDL_RenderCopy(renderer, main_texture, NULL, &center_rect);
SDL_RenderPresent(renderer);
#endif
Uint32 now = SDL_GetTicks();
tick_deltas[tick_delta_index] = (now - start_ticks);
start_ticks = now;
tick_delta_index++;
if (tick_delta_index == TICK_MAX) {
Uint32 total = 0;
for (int i = 0; i < TICK_MAX; i++) {
total += tick_deltas[i];
}
fprintf(stderr, "AVERAGE FPS: %.2f\n", 1000.0f / (total / (float) TICK_MAX));
tick_delta_index = 0;
}
// SDL_Delay(delay);
}
vanilla_stop();