diff options
| -rw-r--r-- | plat_sdl.c | 52 |
1 files changed, 39 insertions, 13 deletions
@@ -1,5 +1,6 @@ #include <SDL/SDL.h> #include <unistd.h> +#include <sys/time.h> #include "core.h" #include "libpicofe/fonts.h" #include "libpicofe/plat.h" @@ -38,6 +39,18 @@ static unsigned msg_expire = 0; static bool frame_dirty = false; static int frame_time = 1000000 / 60; +static uint64_t plat_get_ticks_us_u64(void) { + uint64_t ret; + struct timeval tv; + + gettimeofday(&tv, NULL); + + ret = (uint64_t)tv.tv_sec * 1000000; + ret += (uint64_t)tv.tv_usec; + + return ret; +} + static void video_expire_msg(void) { msg[0] = '\0'; @@ -240,26 +253,39 @@ void plat_video_process(const void *data, unsigned width, unsigned height, size_ void plat_video_flip(void) { - static unsigned int next_frame_time_us = 0; + static uint64_t next_frame_time_us = 0; if (frame_dirty) { - unsigned int time = plat_get_ticks_us(); + if (enable_drc) { + uint64_t time = plat_get_ticks_us_u64(); - if (limit_frames && enable_drc && time < next_frame_time_us) { - usleep(next_frame_time_us - time); - } + if (limit_frames && time < next_frame_time_us) { + uint32_t delaytime = (next_frame_time_us - time - 1) / 1000 + 1; - if (!next_frame_time_us) - next_frame_time_us = time; + if (delaytime < 1000) + SDL_Delay(delaytime); + else + next_frame_time_us = 0; - fb_flip(); + time = plat_get_ticks_us_u64(); + } - do { - next_frame_time_us += frame_time; - } while (next_frame_time_us < time); - } + if (!next_frame_time_us || !limit_frames) { + next_frame_time_us = time; + } + + fb_flip(); + + do { + next_frame_time_us += frame_time; + } while (next_frame_time_us < time); + } else { + fb_flip(); + next_frame_time_us = 0; + } - frame_dirty = false; + frame_dirty = false; + } } void plat_video_close(void) |