frontend/plugin_lib.c

   1 /*
   2  * (C) notaz, 2010
   3  *
   4  * This work is licensed under the terms of the GNU GPLv2 or later.
   5  * See the COPYING file in the top-level directory.
   6  */
   7
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <stdarg.h>
  12 #include <sys/time.h>
  13 #include <sys/types.h>
  14 #include <sys/stat.h>
  15 #include <fcntl.h>
  16 #include <unistd.h>
  17 #include <pthread.h>
  18
  19 #include "plugin_lib.h"
  20 #include "linux/fbdev.h"
  21 #include "common/fonts.h"
  22 #include "common/input.h"
  23 #include "omap.h"
  24 #include "menu.h"
  25 #include "pcnt.h"
  26 #include "../libpcsxcore/new_dynarec/new_dynarec.h"
  27
  28 void *pl_fbdev_buf;
  29 int pl_frame_interval;
  30 int keystate;
  31 static int pl_fbdev_w, pl_fbdev_h, pl_fbdev_bpp;
  32 static int flip_cnt, vsync_cnt, flips_per_sec, tick_per_sec;
  33 static float vsps_cur;
  34 static int plugin_skip_advice;
  35 // P.E.Op.S.
  36 extern int UseFrameSkip;
  37 extern float fps_skip;
  38
  39 static int get_cpu_ticks(void)
  40 {
  41         static unsigned long last_utime;
  42         static int fd;
  43         unsigned long utime, ret;
  44         char buf[128];
  45
  46         if (fd == 0)
  47                 fd = open("/proc/self/stat", O_RDONLY);
  48         lseek(fd, 0, SEEK_SET);
  49         buf[0] = 0;
  50         read(fd, buf, sizeof(buf));
  51         buf[sizeof(buf) - 1] = 0;
  52
  53         sscanf(buf, "%*d %*s %*c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u %lu", &utime);
  54         ret = utime - last_utime;
  55         last_utime = utime;
  56         return ret;
  57 }
  58
  59 static void print_fps(void)
  60 {
  61         if (pl_fbdev_bpp == 16)
  62                 pl_text_out16(2, pl_fbdev_h - 10, "%2d %4.1f", flips_per_sec, vsps_cur);
  63 }
  64
  65 static void print_cpu_usage(void)
  66 {
  67         if (pl_fbdev_bpp == 16)
  68                 pl_text_out16(pl_fbdev_w - 28, pl_fbdev_h - 10, "%3d", tick_per_sec);
  69 }
  70
  71 void *pl_fbdev_set_mode(int w, int h, int bpp)
  72 {
  73         void *ret;
  74
  75         if (w == pl_fbdev_w && h == pl_fbdev_h && bpp == pl_fbdev_bpp)
  76                 return pl_fbdev_buf;
  77
  78         pl_fbdev_w = w;
  79         pl_fbdev_h = h;
  80         pl_fbdev_bpp = bpp;
  81
  82         vout_fbdev_clear(layer_fb);
  83         ret = vout_fbdev_resize(layer_fb, w, h, bpp, 0, 0, 0, 0, 3);
  84         if (ret == NULL)
  85                 fprintf(stderr, "failed to set mode\n");
  86         else
  87                 pl_fbdev_buf = ret;
  88
  89         menu_notify_mode_change(w, h, bpp);
  90
  91         return pl_fbdev_buf;
  92 }
  93
  94 void *pl_fbdev_flip(void)
  95 {
  96         flip_cnt++;
  97
  98         if (pl_fbdev_buf != NULL) {
  99                 if (g_opts & OPT_SHOWFPS)
 100                         print_fps();
 101                 if (g_opts & OPT_SHOWCPU)
 102                         print_cpu_usage();
 103         }
 104
 105         // let's flip now
 106         pl_fbdev_buf = vout_fbdev_flip(layer_fb);
 107         return pl_fbdev_buf;
 108 }
 109
 110 int pl_fbdev_open(void)
 111 {
 112         pl_fbdev_buf = vout_fbdev_flip(layer_fb);
 113         omap_enable_layer(1);
 114         return 0;
 115 }
 116
 117 void pl_fbdev_close(void)
 118 {
 119         omap_enable_layer(0);
 120 }
 121
 122 static void update_input(void)
 123 {
 124         int actions[IN_BINDTYPE_COUNT] = { 0, };
 125
 126         in_update(actions);
 127         if (actions[IN_BINDTYPE_EMU] & PEV_MENU)
 128                 stop = 1;
 129         keystate = actions[IN_BINDTYPE_PLAYER12];
 130
 131 #ifdef X11
 132         extern int x11_update_keys(void);
 133         keystate |= x11_update_keys();
 134 #endif
 135 }
 136
 137 #define MAX_LAG_FRAMES 3
 138
 139 #define tvdiff(tv, tv_old) \
 140         ((tv.tv_sec - tv_old.tv_sec) * 1000000 + tv.tv_usec - tv_old.tv_usec)
 141 // assumes us < 1000000
 142 #define tvadd(tv, us) { \
 143         tv.tv_usec += us; \
 144         if (tv.tv_usec >= 1000000) { \
 145                 tv.tv_usec -= 1000000; \
 146                 tv.tv_sec++; \
 147         } \
 148 }
 149
 150 /* called on every vsync */
 151 void pl_frame_limit(void)
 152 {
 153         static struct timeval tv_old, tv_expect;
 154         static int vsync_cnt_prev;
 155         struct timeval now;
 156         int diff;
 157
 158         vsync_cnt++;
 159
 160         /* doing input here because the pad is polled
 161          * thousands of times per frame for some reason */
 162         update_input();
 163
 164         pcnt_end(PCNT_ALL);
 165         gettimeofday(&now, 0);
 166
 167         if (now.tv_sec != tv_old.tv_sec) {
 168                 diff = tvdiff(now, tv_old);
 169                 vsps_cur = 0.0f;
 170                 if (0 < diff && diff < 2000000)
 171                         vsps_cur = 1000000.0f * (vsync_cnt - vsync_cnt_prev) / diff;
 172                 vsync_cnt_prev = vsync_cnt;
 173                 flips_per_sec = flip_cnt;
 174                 flip_cnt = 0;
 175                 tv_old = now;
 176                 if (g_opts & OPT_SHOWCPU)
 177                         tick_per_sec = get_cpu_ticks();
 178         }
 179 #ifdef PCNT
 180         static int ya_vsync_count;
 181         if (++ya_vsync_count == PCNT_FRAMES) {
 182                 pcnt_print(vsps_cur);
 183                 ya_vsync_count = 0;
 184         }
 185 #endif
 186
 187         tvadd(tv_expect, pl_frame_interval);
 188         diff = tvdiff(tv_expect, now);
 189         if (diff > MAX_LAG_FRAMES * pl_frame_interval || diff < -MAX_LAG_FRAMES * pl_frame_interval) {
 190                 //printf("pl_frame_limit reset, diff=%d, iv %d\n", diff, pl_frame_interval);
 191                 tv_expect = now;
 192                 diff = 0;
 193         }
 194
 195         if (!(g_opts & OPT_NO_FRAMELIM) && diff > pl_frame_interval) {
 196                 // yay for working usleep on pandora!
 197                 //printf("usleep %d\n", diff - pl_frame_interval / 2);
 198                 usleep(diff - pl_frame_interval / 2);
 199         }
 200
 201         plugin_skip_advice = 0;
 202         if (UseFrameSkip && diff < -pl_frame_interval) {
 203                 // P.E.Op.S. makes skip decision based on this
 204                 fps_skip = 1.0f;
 205                 plugin_skip_advice = 1;
 206         }
 207
 208         pcnt_start(PCNT_ALL);
 209 }
 210
 211 static void pl_text_out16_(int x, int y, const char *text)
 212 {
 213         int i, l, len = strlen(text), w = pl_fbdev_w;
 214         unsigned short *screen = (unsigned short *)pl_fbdev_buf + x + y * w;
 215         unsigned short val = 0xffff;
 216
 217         for (i = 0; i < len; i++, screen += 8)
 218         {
 219                 for (l = 0; l < 8; l++)
 220                 {
 221                         unsigned char fd = fontdata8x8[text[i] * 8 + l];
 222                         unsigned short *s = screen + l * w;
 223                         if (fd&0x80) s[0] = val;
 224                         if (fd&0x40) s[1] = val;
 225                         if (fd&0x20) s[2] = val;
 226                         if (fd&0x10) s[3] = val;
 227                         if (fd&0x08) s[4] = val;
 228                         if (fd&0x04) s[5] = val;
 229                         if (fd&0x02) s[6] = val;
 230                         if (fd&0x01) s[7] = val;
 231                 }
 232         }
 233 }
 234
 235 void pl_text_out16(int x, int y, const char *texto, ...)
 236 {
 237         va_list args;
 238         char    buffer[256];
 239
 240         va_start(args, texto);
 241         vsnprintf(buffer, sizeof(buffer), texto, args);
 242         va_end(args);
 243
 244         pl_text_out16_(x, y, buffer);
 245 }
 246
 247 static void pl_get_layer_pos(int *x, int *y, int *w, int *h)
 248 {
 249         *x = g_layer_x;
 250         *y = g_layer_y;
 251         *w = g_layer_w;
 252         *h = g_layer_h;
 253 }
 254
 255 const struct rearmed_cbs pl_rearmed_cbs = {
 256         pl_get_layer_pos,
 257         pl_fbdev_open,
 258         pl_fbdev_set_mode,
 259         pl_fbdev_flip,
 260         pl_fbdev_close,
 261         &plugin_skip_advice,
 262 };
 263
 264 /* watchdog */
 265 static void *watchdog_thread(void *unused)
 266 {
 267         int vsync_cnt_old = 0;
 268         int seen_dead = 0;
 269         int sleep_time = 5;
 270
 271         while (1)
 272         {
 273                 sleep(sleep_time);
 274
 275                 if (stop) {
 276                         seen_dead = 0;
 277                         sleep_time = 5;
 278                         continue;
 279                 }
 280                 if (vsync_cnt != vsync_cnt_old) {
 281                         vsync_cnt_old = vsync_cnt;
 282                         seen_dead = 0;
 283                         sleep_time = 2;
 284                         continue;
 285                 }
 286
 287                 seen_dead++;
 288                 sleep_time = 1;
 289                 if (seen_dead > 1)
 290                         fprintf(stderr, "watchdog: seen_dead %d\n", seen_dead);
 291                 if (seen_dead > 4) {
 292                         fprintf(stderr, "watchdog: lockup detected, aborting\n");
 293                         // we can't do any cleanup here really, the main thread is
 294                         // likely touching resources and would crash anyway
 295                         abort();
 296                 }
 297         }
 298 }
 299
 300 void pl_start_watchdog(void)
 301 {
 302         pthread_attr_t attr;
 303         pthread_t tid;
 304         int ret;
 305
 306         pthread_attr_init(&attr);
 307         pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
 308
 309         ret = pthread_create(&tid, &attr, watchdog_thread, NULL);
 310         if (ret != 0)
 311                 fprintf(stderr, "could not start watchdog: %d\n", ret);
 312 }
 313