frontend: tune frameskip a bit more
[pcsx_rearmed.git] / frontend / plugin_lib.c
index 35a23c1..5cf1ff4 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * (C) notaz, 2010
+ * (C) notaz, 2010-2011
  *
  * This work is licensed under the terms of the GNU GPLv2 or later.
  * See the COPYING file in the top-level directory.
@@ -9,28 +9,84 @@
 #include <stdlib.h>
 #include <string.h>
 #include <stdarg.h>
+#include <stdint.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <pthread.h>
 
+#include "plugin_lib.h"
 #include "linux/fbdev.h"
 #include "common/fonts.h"
 #include "common/input.h"
 #include "omap.h"
+#include "menu.h"
+#include "main.h"
+#include "pcnt.h"
 #include "../libpcsxcore/new_dynarec/new_dynarec.h"
+#include "../libpcsxcore/psemu_plugin_defs.h"
 
 void *pl_fbdev_buf;
-int keystate;
-static int pl_fbdev_w;
+int pl_frame_interval;
+int in_type, in_keystate, in_a1[2] = { 127, 127 }, in_a2[2] = { 127, 127 };
+static int pl_fbdev_w, pl_fbdev_h, pl_fbdev_bpp;
+static int flip_cnt, vsync_cnt, flips_per_sec, tick_per_sec;
+static float vsps_cur;
+static int plugin_skip_advice;
+// P.E.Op.S.
+extern int UseFrameSkip;
+extern float fps_skip;
 
-int pl_fbdev_init(void)
+static int get_cpu_ticks(void)
 {
-       pl_fbdev_buf = vout_fbdev_flip(layer_fb);
-       return 0;
+       static unsigned long last_utime;
+       static int fd;
+       unsigned long utime, ret;
+       char buf[128];
+
+       if (fd == 0)
+               fd = open("/proc/self/stat", O_RDONLY);
+       lseek(fd, 0, SEEK_SET);
+       buf[0] = 0;
+       read(fd, buf, sizeof(buf));
+       buf[sizeof(buf) - 1] = 0;
+
+       sscanf(buf, "%*d %*s %*c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u %lu", &utime);
+       ret = utime - last_utime;
+       last_utime = utime;
+       return ret;
+}
+
+static void print_hud(void)
+{
+       if (pl_fbdev_bpp == 16)
+               pl_text_out16(2, pl_fbdev_h - 10, "%s", hud_msg);
+}
+
+static void print_fps(void)
+{
+       if (pl_fbdev_bpp == 16)
+               pl_text_out16(2, pl_fbdev_h - 10, "%2d %4.1f", flips_per_sec, vsps_cur);
 }
 
-int pl_fbdev_set_mode(int w, int h, int bpp)
+static void print_cpu_usage(void)
+{
+       if (pl_fbdev_bpp == 16)
+               pl_text_out16(pl_fbdev_w - 28, pl_fbdev_h - 10, "%3d", tick_per_sec);
+}
+
+void *pl_fbdev_set_mode(int w, int h, int bpp)
 {
        void *ret;
 
+       if (w == pl_fbdev_w && h == pl_fbdev_h && bpp == pl_fbdev_bpp)
+               return pl_fbdev_buf;
+
        pl_fbdev_w = w;
+       pl_fbdev_h = h;
+       pl_fbdev_bpp = bpp;
 
        vout_fbdev_clear(layer_fb);
        ret = vout_fbdev_resize(layer_fb, w, h, bpp, 0, 0, 0, 0, 3);
@@ -39,27 +95,150 @@ int pl_fbdev_set_mode(int w, int h, int bpp)
        else
                pl_fbdev_buf = ret;
 
-       return (ret != NULL) ? 0 : -1;
+       menu_notify_mode_change(w, h, bpp);
+
+       return pl_fbdev_buf;
 }
 
 void *pl_fbdev_flip(void)
 {
-       /* doing input here because the pad is polled
-        * thousands of times for some reason */
-       int actions[IN_BINDTYPE_COUNT] = { 0, };
+       flip_cnt++;
 
-       in_update(actions);
-       if (actions[IN_BINDTYPE_EMU] & PEV_MENU)
-               stop = 1;
-       keystate = actions[IN_BINDTYPE_PLAYER12];
+       if (pl_fbdev_buf != NULL) {
+               if (hud_msg[0] != 0)
+                       print_hud();
+               else if (g_opts & OPT_SHOWFPS)
+                       print_fps();
+
+               if (g_opts & OPT_SHOWCPU)
+                       print_cpu_usage();
+       }
 
        // let's flip now
        pl_fbdev_buf = vout_fbdev_flip(layer_fb);
        return pl_fbdev_buf;
 }
 
-void pl_fbdev_finish(void)
+int pl_fbdev_open(void)
+{
+       pl_fbdev_buf = vout_fbdev_flip(layer_fb);
+       omap_enable_layer(1);
+       return 0;
+}
+
+void pl_fbdev_close(void)
+{
+       omap_enable_layer(0);
+}
+
+static void update_input(void)
+{
+       int actions[IN_BINDTYPE_COUNT] = { 0, };
+       unsigned int emu_act;
+
+       in_update(actions);
+       if (in_type == PSE_PAD_TYPE_ANALOGPAD)
+               in_update_analogs();
+       emu_act = actions[IN_BINDTYPE_EMU];
+       if (emu_act) {
+               int which = 0;
+               for (; !(emu_act & 1); emu_act >>= 1, which++)
+                       ;
+               emu_act = which;
+       }
+       emu_set_action(emu_act);
+
+       in_keystate = actions[IN_BINDTYPE_PLAYER12];
+
+#ifdef X11
+       extern int x11_update_keys(void);
+       in_keystate |= x11_update_keys();
+#endif
+}
+
+#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)
+// assumes us < 1000000
+#define tvadd(tv, us) { \
+       tv.tv_usec += us; \
+       if (tv.tv_usec >= 1000000) { \
+               tv.tv_usec -= 1000000; \
+               tv.tv_sec++; \
+       } \
+}
+
+/* called on every vsync */
+void pl_frame_limit(void)
 {
+       static struct timeval tv_old, tv_expect;
+       static int vsync_cnt_prev;
+       struct timeval now;
+       int diff;
+
+       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 = flip_cnt;
+               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
+
+       tvadd(tv_expect, pl_frame_interval);
+       diff = tvdiff(tv_expect, now);
+       if (diff > MAX_LAG_FRAMES * pl_frame_interval || diff < -MAX_LAG_FRAMES * pl_frame_interval) {
+               //printf("pl_frame_limit reset, diff=%d, iv %d\n", diff, pl_frame_interval);
+               tv_expect = now;
+               diff = 0;
+       }
+
+       if (!(g_opts & OPT_NO_FRAMELIM) && diff > pl_frame_interval) {
+               // yay for working usleep on pandora!
+               //printf("usleep %d\n", diff - pl_frame_interval / 2);
+               usleep(diff - pl_frame_interval / 2);
+       }
+
+       if (UseFrameSkip) {
+               if (diff < -pl_frame_interval) {
+                       // P.E.Op.S. makes skip decision based on this
+                       fps_skip = 1.0f;
+                       plugin_skip_advice = 1;
+               }
+               else if (diff >= 0) {
+                       fps_skip = 100.0f;
+                       plugin_skip_advice = 0;
+               }
+       }
+
+       pcnt_start(PCNT_ALL);
 }
 
 static void pl_text_out16_(int x, int y, const char *text)
@@ -98,3 +277,74 @@ void pl_text_out16(int x, int y, const char *texto, ...)
        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;
+}
+
+const struct rearmed_cbs pl_rearmed_cbs = {
+       pl_get_layer_pos,
+       pl_fbdev_open,
+       pl_fbdev_set_mode,
+       pl_fbdev_flip,
+       pl_fbdev_close,
+       &plugin_skip_advice,
+};
+
+/* watchdog */
+static void *watchdog_thread(void *unused)
+{
+       int vsync_cnt_old = 0;
+       int seen_dead = 0;
+       int sleep_time = 5;
+
+#ifndef NDEBUG
+       // 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);
+}
+