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