frontend/plugin_lib.c

   1 /*
   2  * (C) notaz, 2010-2011
   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 <stdint.h>
  13 #include <sys/time.h>
  14 #include <sys/types.h>
  15 #include <sys/stat.h>
  16 #include <fcntl.h>
  17 #include <unistd.h>
  18 #include <pthread.h>
  19
  20 #include "plugin_lib.h"
  21 #include "linux/fbdev.h"
  22 #include "common/fonts.h"
  23 #include "common/input.h"
  24 #include "omap.h"
  25 #include "menu.h"
  26 #include "main.h"
  27 #include "pcnt.h"
  28 #include "../libpcsxcore/new_dynarec/new_dynarec.h"
  29 #include "../libpcsxcore/psemu_plugin_defs.h"
  30
  31 void *pl_fbdev_buf;
  32 int pl_frame_interval;
  33 int in_type, in_keystate, in_a1[2] = { 127, 127 }, in_a2[2] = { 127, 127 };
  34 static int pl_fbdev_w, pl_fbdev_h, pl_fbdev_bpp;
  35 static int flip_cnt, vsync_cnt, flips_per_sec, tick_per_sec;
  36 static float vsps_cur;
  37 static int vsync_usec_time;
  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_hud(void)
  60 {
  61         if (pl_fbdev_bpp == 16)
  62                 pl_text_out16(2, pl_fbdev_h - 10, "%s", hud_msg);
  63 }
  64
  65 static void print_fps(void)
  66 {
  67         if (pl_fbdev_bpp == 16)
  68                 pl_text_out16(2, pl_fbdev_h - 10, "%2d %4.1f", flips_per_sec, vsps_cur);
  69 }
  70
  71 static void print_cpu_usage(void)
  72 {
  73         if (pl_fbdev_bpp == 16)
  74                 pl_text_out16(pl_fbdev_w - 28, pl_fbdev_h - 10, "%3d", tick_per_sec);
  75 }
  76
  77 void *pl_fbdev_set_mode(int w, int h, int bpp)
  78 {
  79         void *ret;
  80
  81         if (w == pl_fbdev_w && h == pl_fbdev_h && bpp == pl_fbdev_bpp)
  82                 return pl_fbdev_buf;
  83
  84         pl_fbdev_w = w;
  85         pl_fbdev_h = h;
  86         pl_fbdev_bpp = bpp;
  87
  88         vout_fbdev_clear(layer_fb);
  89         ret = vout_fbdev_resize(layer_fb, w, h, bpp, 0, 0, 0, 0, 3);
  90         if (ret == NULL)
  91                 fprintf(stderr, "failed to set mode\n");
  92         else
  93                 pl_fbdev_buf = ret;
  94
  95         menu_notify_mode_change(w, h, bpp);
  96
  97         return pl_fbdev_buf;
  98 }
  99
 100 void *pl_fbdev_flip(void)
 101 {
 102         flip_cnt++;
 103
 104         if (pl_fbdev_buf != NULL) {
 105                 if (hud_msg[0] != 0)
 106                         print_hud();
 107                 else if (g_opts & OPT_SHOWFPS)
 108                         print_fps();
 109
 110                 if (g_opts & OPT_SHOWCPU)
 111                         print_cpu_usage();
 112         }
 113
 114         // let's flip now
 115         pl_fbdev_buf = vout_fbdev_flip(layer_fb);
 116         return pl_fbdev_buf;
 117 }
 118
 119 int pl_fbdev_open(void)
 120 {
 121         struct timeval now;
 122
 123         pl_fbdev_buf = vout_fbdev_flip(layer_fb);
 124         omap_enable_layer(1);
 125
 126         // try to align redraws to vsync
 127         vout_fbdev_wait_vsync(layer_fb);
 128         gettimeofday(&now, 0);
 129         vsync_usec_time = now.tv_usec;
 130         while (vsync_usec_time >= pl_frame_interval)
 131                 vsync_usec_time -= pl_frame_interval;
 132
 133         return 0;
 134 }
 135
 136 void pl_fbdev_close(void)
 137 {
 138         omap_enable_layer(0);
 139 }
 140
 141 void *pl_prepare_screenshot(int *w, int *h, int *bpp)
 142 {
 143         *w = pl_fbdev_w;
 144         *h = pl_fbdev_h;
 145         *bpp = pl_fbdev_bpp;
 146
 147         return pl_fbdev_buf;
 148 }
 149
 150 static void update_input(void)
 151 {
 152         int actions[IN_BINDTYPE_COUNT] = { 0, };
 153         unsigned int emu_act;
 154
 155         in_update(actions);
 156         if (in_type == PSE_PAD_TYPE_ANALOGPAD)
 157                 in_update_analogs();
 158         emu_act = actions[IN_BINDTYPE_EMU];
 159         if (emu_act) {
 160                 int which = 0;
 161                 for (; !(emu_act & 1); emu_act >>= 1, which++)
 162                         ;
 163                 emu_act = which;
 164         }
 165         emu_set_action(emu_act);
 166
 167         in_keystate = actions[IN_BINDTYPE_PLAYER12];
 168
 169 #ifdef X11
 170         extern int x11_update_keys(unsigned int *action);
 171         in_keystate |= x11_update_keys(&emu_act);
 172         emu_set_action(emu_act);
 173 #endif
 174 }
 175
 176 #define MAX_LAG_FRAMES 3
 177
 178 #define tvdiff(tv, tv_old) \
 179         ((tv.tv_sec - tv_old.tv_sec) * 1000000 + tv.tv_usec - tv_old.tv_usec)
 180 // assumes us < 1000000
 181 #define tvadd(tv, us) { \
 182         tv.tv_usec += us; \
 183         if (tv.tv_usec >= 1000000) { \
 184                 tv.tv_usec -= 1000000; \
 185                 tv.tv_sec++; \
 186         } \
 187 }
 188
 189 /* called on every vsync */
 190 void pl_frame_limit(void)
 191 {
 192         static struct timeval tv_old, tv_expect;
 193         static int vsync_cnt_prev;
 194         struct timeval now;
 195         int diff, usadj;
 196
 197         vsync_cnt++;
 198
 199         /* doing input here because the pad is polled
 200          * thousands of times per frame for some reason */
 201         update_input();
 202
 203         pcnt_end(PCNT_ALL);
 204         gettimeofday(&now, 0);
 205
 206         if (now.tv_sec != tv_old.tv_sec) {
 207                 diff = tvdiff(now, tv_old);
 208                 vsps_cur = 0.0f;
 209                 if (0 < diff && diff < 2000000)
 210                         vsps_cur = 1000000.0f * (vsync_cnt - vsync_cnt_prev) / diff;
 211                 vsync_cnt_prev = vsync_cnt;
 212                 flips_per_sec = flip_cnt;
 213                 flip_cnt = 0;
 214                 tv_old = now;
 215                 if (g_opts & OPT_SHOWCPU)
 216                         tick_per_sec = get_cpu_ticks();
 217
 218                 if (hud_new_msg > 0) {
 219                         hud_new_msg--;
 220                         if (hud_new_msg == 0)
 221                                 hud_msg[0] = 0;
 222                 }
 223         }
 224 #ifdef PCNT
 225         static int ya_vsync_count;
 226         if (++ya_vsync_count == PCNT_FRAMES) {
 227                 pcnt_print(vsps_cur);
 228                 ya_vsync_count = 0;
 229         }
 230 #endif
 231
 232         tvadd(tv_expect, pl_frame_interval);
 233         diff = tvdiff(tv_expect, now);
 234         if (diff > MAX_LAG_FRAMES * pl_frame_interval || diff < -MAX_LAG_FRAMES * pl_frame_interval) {
 235                 //printf("pl_frame_limit reset, diff=%d, iv %d\n", diff, pl_frame_interval);
 236                 tv_expect = now;
 237                 diff = 0;
 238                 // try to align with vsync
 239                 usadj = vsync_usec_time;
 240                 while (usadj < tv_expect.tv_usec - pl_frame_interval)
 241                         usadj += pl_frame_interval;
 242                 tv_expect.tv_usec = usadj;
 243         }
 244
 245         if (!(g_opts & OPT_NO_FRAMELIM) && diff > pl_frame_interval) {
 246                 // yay for working usleep on pandora!
 247                 //printf("usleep %d\n", diff - pl_frame_interval / 2);
 248                 usleep(diff - pl_frame_interval / 2);
 249         }
 250
 251         if (pl_rearmed_cbs.frameskip) {
 252                 if (diff < -pl_frame_interval)
 253                         pl_rearmed_cbs.fskip_advice = 1;
 254                 else if (diff >= 0)
 255                         pl_rearmed_cbs.fskip_advice = 0;
 256         }
 257
 258         pcnt_start(PCNT_ALL);
 259 }
 260
 261 static void pl_text_out16_(int x, int y, const char *text)
 262 {
 263         int i, l, len = strlen(text), w = pl_fbdev_w;
 264         unsigned short *screen = (unsigned short *)pl_fbdev_buf + x + y * w;
 265         unsigned short val = 0xffff;
 266
 267         for (i = 0; i < len; i++, screen += 8)
 268         {
 269                 for (l = 0; l < 8; l++)
 270                 {
 271                         unsigned char fd = fontdata8x8[text[i] * 8 + l];
 272                         unsigned short *s = screen + l * w;
 273                         if (fd&0x80) s[0] = val;
 274                         if (fd&0x40) s[1] = val;
 275                         if (fd&0x20) s[2] = val;
 276                         if (fd&0x10) s[3] = val;
 277                         if (fd&0x08) s[4] = val;
 278                         if (fd&0x04) s[5] = val;
 279                         if (fd&0x02) s[6] = val;
 280                         if (fd&0x01) s[7] = val;
 281                 }
 282         }
 283 }
 284
 285 void pl_text_out16(int x, int y, const char *texto, ...)
 286 {
 287         va_list args;
 288         char    buffer[256];
 289
 290         va_start(args, texto);
 291         vsnprintf(buffer, sizeof(buffer), texto, args);
 292         va_end(args);
 293
 294         pl_text_out16_(x, y, buffer);
 295 }
 296
 297 static void pl_get_layer_pos(int *x, int *y, int *w, int *h)
 298 {
 299         *x = g_layer_x;
 300         *y = g_layer_y;
 301         *w = g_layer_w;
 302         *h = g_layer_h;
 303 }
 304
 305 struct rearmed_cbs pl_rearmed_cbs = {
 306         pl_get_layer_pos,
 307         pl_fbdev_open,
 308         pl_fbdev_set_mode,
 309         pl_fbdev_flip,
 310         pl_fbdev_close,
 311 };
 312
 313 /* watchdog */
 314 static void *watchdog_thread(void *unused)
 315 {
 316         int vsync_cnt_old = 0;
 317         int seen_dead = 0;
 318         int sleep_time = 5;
 319
 320 #ifndef NDEBUG
 321         // don't interfere with debug
 322         return NULL;
 323 #endif
 324         while (1)
 325         {
 326                 sleep(sleep_time);
 327
 328                 if (stop) {
 329                         seen_dead = 0;
 330                         sleep_time = 5;
 331                         continue;
 332                 }
 333                 if (vsync_cnt != vsync_cnt_old) {
 334                         vsync_cnt_old = vsync_cnt;
 335                         seen_dead = 0;
 336                         sleep_time = 2;
 337                         continue;
 338                 }
 339
 340                 seen_dead++;
 341                 sleep_time = 1;
 342                 if (seen_dead > 1)
 343                         fprintf(stderr, "watchdog: seen_dead %d\n", seen_dead);
 344                 if (seen_dead > 4) {
 345                         fprintf(stderr, "watchdog: lockup detected, aborting\n");
 346                         // we can't do any cleanup here really, the main thread is
 347                         // likely touching resources and would crash anyway
 348                         abort();
 349                 }
 350         }
 351 }
 352
 353 void pl_start_watchdog(void)
 354 {
 355         pthread_attr_t attr;
 356         pthread_t tid;
 357         int ret;
 358
 359         pthread_attr_init(&attr);
 360         pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
 361
 362         ret = pthread_create(&tid, &attr, watchdog_thread, NULL);
 363         if (ret != 0)
 364                 fprintf(stderr, "could not start watchdog: %d\n", ret);
 365 }
 366