+#define MAX_LAG_FRAMES 3
+
+#define tvdiff(tv, tv_old) \
+ ((tv.tv_sec - tv_old.tv_sec) * 1000000 + tv.tv_usec - tv_old.tv_usec)
+
+/* called on every vsync */
+void pl_frame_limit(void)
+{
+ static struct timeval tv_old, tv_expect;
+ static int vsync_cnt_prev, drc_active_vsyncs;
+ struct timeval now;
+ int diff, usadj;
+
+ vsync_cnt++;
+
+ /* doing input here because the pad is polled
+ * thousands of times per frame for some reason */
+ update_input();
+
+ pcnt_end(PCNT_ALL);
+ gettimeofday(&now, 0);
+
+ if (now.tv_sec != tv_old.tv_sec) {
+ diff = tvdiff(now, tv_old);
+ vsps_cur = 0.0f;
+ if (0 < diff && diff < 2000000)
+ vsps_cur = 1000000.0f * (vsync_cnt - vsync_cnt_prev) / diff;
+ vsync_cnt_prev = vsync_cnt;
+ flips_per_sec = pl_flip_cnt;
+ pl_flip_cnt = 0;
+ tv_old = now;
+ if (g_opts & OPT_SHOWCPU)
+ tick_per_sec = get_cpu_ticks();
+
+ if (hud_new_msg > 0) {
+ hud_new_msg--;
+ if (hud_new_msg == 0)
+ hud_msg[0] = 0;
+ }
+ }
+#ifdef PCNT
+ static int ya_vsync_count;
+ if (++ya_vsync_count == PCNT_FRAMES) {
+ pcnt_print(vsps_cur);
+ ya_vsync_count = 0;
+ }
+#endif
+
+ // tv_expect uses usec*1024 units instead of usecs for better accuracy
+ tv_expect.tv_usec += frame_interval1024;
+ if (tv_expect.tv_usec >= (1000000 << 10)) {
+ tv_expect.tv_usec -= (1000000 << 10);
+ tv_expect.tv_sec++;
+ }
+ diff = (tv_expect.tv_sec - now.tv_sec) * 1000000 + (tv_expect.tv_usec >> 10) - now.tv_usec;
+
+ if (diff > MAX_LAG_FRAMES * frame_interval || diff < -MAX_LAG_FRAMES * frame_interval) {
+ //printf("pl_frame_limit reset, diff=%d, iv %d\n", diff, frame_interval);
+ tv_expect = now;
+ diff = 0;
+ // try to align with vsync
+ usadj = vsync_usec_time;
+ while (usadj < tv_expect.tv_usec - frame_interval)
+ usadj += frame_interval;
+ tv_expect.tv_usec = usadj << 10;
+ }
+
+ if (!(g_opts & OPT_NO_FRAMELIM) && diff > frame_interval) {
+ // yay for working usleep on pandora!
+ //printf("usleep %d\n", diff - frame_interval / 2);
+ usleep(diff - frame_interval);
+ }
+
+ if (pl_rearmed_cbs.frameskip) {
+ if (diff < -frame_interval)
+ pl_rearmed_cbs.fskip_advice = 1;
+ else if (diff >= 0)
+ pl_rearmed_cbs.fskip_advice = 0;
+
+ // recompilation is not that fast and may cause frame skip on
+ // loading screens and such, resulting in flicker or glitches
+ if (new_dynarec_did_compile) {
+ if (drc_active_vsyncs < 32)
+ pl_rearmed_cbs.fskip_advice = 0;
+ drc_active_vsyncs++;
+ }
+ else
+ drc_active_vsyncs = 0;
+ new_dynarec_did_compile = 0;
+ }
+
+ pcnt_start(PCNT_ALL);
+}
+
+void pl_timing_prepare(int is_pal)
+{
+ pl_rearmed_cbs.fskip_advice = 0;
+
+ frame_interval = is_pal ? 20000 : 16667;
+ frame_interval1024 = is_pal ? 20000*1024 : 17066667;
+
+ // used by P.E.Op.S. frameskip code
+ pl_rearmed_cbs.gpu_peops.fFrameRateHz = is_pal ? 50.0f : 59.94f;
+ pl_rearmed_cbs.gpu_peops.dwFrameRateTicks =
+ (100000*100 / (unsigned long)(pl_rearmed_cbs.gpu_peops.fFrameRateHz*100));
+}
+
+static void pl_text_out16_(int x, int y, const char *text)
+{
+ int i, l, len = strlen(text), w = pl_vout_w;
+ unsigned short *screen = (unsigned short *)pl_vout_buf + x + y * w;
+ unsigned short val = 0xffff;
+
+ for (i = 0; i < len; i++, screen += 8)
+ {
+ for (l = 0; l < 8; l++)
+ {
+ unsigned char fd = fontdata8x8[text[i] * 8 + l];
+ unsigned short *s = screen + l * w;
+ if (fd&0x80) s[0] = val;
+ if (fd&0x40) s[1] = val;
+ if (fd&0x20) s[2] = val;
+ if (fd&0x10) s[3] = val;
+ if (fd&0x08) s[4] = val;
+ if (fd&0x04) s[5] = val;
+ if (fd&0x02) s[6] = val;
+ if (fd&0x01) s[7] = val;
+ }
+ }
+}
+
+void pl_text_out16(int x, int y, const char *texto, ...)
+{
+ va_list args;
+ char buffer[256];
+
+ va_start(args, texto);
+ vsnprintf(buffer, sizeof(buffer), texto, args);
+ va_end(args);
+
+ pl_text_out16_(x, y, buffer);
+}
+
+static void pl_get_layer_pos(int *x, int *y, int *w, int *h)
+{
+ *x = g_layer_x;
+ *y = g_layer_y;
+ *w = g_layer_w;
+ *h = g_layer_h;
+}
+
+struct rearmed_cbs pl_rearmed_cbs = {
+ pl_get_layer_pos,
+ pl_vout_open,
+ pl_vout_set_mode,
+ pl_vout_flip,
+ pl_vout_close,
+};
+
+/* watchdog */
+static void *watchdog_thread(void *unused)
+{
+ int vsync_cnt_old = 0;
+ int seen_dead = 0;
+ int sleep_time = 5;
+
+#if !defined(NDEBUG) || defined(DRC_DBG)
+ // don't interfere with debug
+ return NULL;
+#endif
+ while (1)
+ {
+ sleep(sleep_time);
+
+ if (stop) {
+ seen_dead = 0;
+ sleep_time = 5;
+ continue;
+ }
+ if (vsync_cnt != vsync_cnt_old) {
+ vsync_cnt_old = vsync_cnt;
+ seen_dead = 0;
+ sleep_time = 2;
+ continue;
+ }
+
+ seen_dead++;
+ sleep_time = 1;
+ if (seen_dead > 1)
+ fprintf(stderr, "watchdog: seen_dead %d\n", seen_dead);
+ if (seen_dead > 4) {
+ fprintf(stderr, "watchdog: lockup detected, aborting\n");
+ // we can't do any cleanup here really, the main thread is
+ // likely touching resources and would crash anyway
+ abort();
+ }
+ }
+}
+
+void pl_start_watchdog(void)
+{
+ pthread_attr_t attr;
+ pthread_t tid;
+ int ret;
+
+ pthread_attr_init(&attr);
+ pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
+
+ ret = pthread_create(&tid, &attr, watchdog_thread, NULL);
+ if (ret != 0)
+ fprintf(stderr, "could not start watchdog: %d\n", ret);
+}
+
+void pl_init(void)
+{
+ extern unsigned int hSyncCount; // from psxcounters
+
+ pl_vout_w = pl_vout_h = 256;
+ pl_vout_bpp = 16;
+
+ tsdev = pl_gun_ts_init();
+
+ pl_rearmed_cbs.gpu_hcnt = &hSyncCount;
+}