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