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 plugin_skip_advice;
  38 // P.E.Op.S.
  39 extern int UseFrameSkip;
  40 extern float fps_skip;
  41
  42 static int get_cpu_ticks(void)
  43 {
  44         static unsigned long last_utime;
  45         static int fd;
  46         unsigned long utime, ret;
  47         char buf[128];
  48
  49         if (fd == 0)
  50                 fd = open("/proc/self/stat", O_RDONLY);
  51         lseek(fd, 0, SEEK_SET);
  52         buf[0] = 0;
  53         read(fd, buf, sizeof(buf));
  54         buf[sizeof(buf) - 1] = 0;
  55
  56         sscanf(buf, "%*d %*s %*c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u %lu", &utime);
  57         ret = utime - last_utime;
  58         last_utime = utime;
  59         return ret;
  60 }
  61
  62 static void print_hud(void)
  63 {
  64         if (pl_fbdev_bpp == 16)
  65                 pl_text_out16(2, pl_fbdev_h - 10, "%s", hud_msg);
  66 }
  67
  68 static void print_fps(void)
  69 {
  70         if (pl_fbdev_bpp == 16)
  71                 pl_text_out16(2, pl_fbdev_h - 10, "%2d %4.1f", flips_per_sec, vsps_cur);
  72 }
  73
  74 static void print_cpu_usage(void)
  75 {
  76         if (pl_fbdev_bpp == 16)
  77                 pl_text_out16(pl_fbdev_w - 28, pl_fbdev_h - 10, "%3d", tick_per_sec);
  78 }
  79
  80 void *pl_fbdev_set_mode(int w, int h, int bpp)
  81 {
  82         void *ret;
  83
  84         if (w == pl_fbdev_w && h == pl_fbdev_h && bpp == pl_fbdev_bpp)
  85                 return pl_fbdev_buf;
  86
  87         pl_fbdev_w = w;
  88         pl_fbdev_h = h;
  89         pl_fbdev_bpp = bpp;
  90
  91         vout_fbdev_clear(layer_fb);
  92         ret = vout_fbdev_resize(layer_fb, w, h, bpp, 0, 0, 0, 0, 3);
  93         if (ret == NULL)
  94                 fprintf(stderr, "failed to set mode\n");
  95         else
  96                 pl_fbdev_buf = ret;
  97
  98         menu_notify_mode_change(w, h, bpp);
  99
 100         return pl_fbdev_buf;
 101 }
 102
 103 void *pl_fbdev_flip(void)
 104 {
 105         flip_cnt++;
 106
 107         if (pl_fbdev_buf != NULL) {
 108                 if (hud_msg[0] != 0)
 109                         print_hud();
 110                 else if (g_opts & OPT_SHOWFPS)
 111                         print_fps();
 112
 113                 if (g_opts & OPT_SHOWCPU)
 114                         print_cpu_usage();
 115         }
 116
 117         // let's flip now
 118         pl_fbdev_buf = vout_fbdev_flip(layer_fb);
 119         return pl_fbdev_buf;
 120 }
 121
 122 int pl_fbdev_open(void)
 123 {
 124         pl_fbdev_buf = vout_fbdev_flip(layer_fb);
 125         omap_enable_layer(1);
 126         return 0;
 127 }
 128
 129 void pl_fbdev_close(void)
 130 {
 131         omap_enable_layer(0);
 132 }
 133
 134 void *pl_prepare_screenshot(int *w, int *h, int *bpp)
 135 {
 136         *w = pl_fbdev_w;
 137         *h = pl_fbdev_h;
 138         *bpp = pl_fbdev_bpp;
 139
 140         return pl_fbdev_buf;
 141 }
 142
 143 static void update_input(void)
 144 {
 145         int actions[IN_BINDTYPE_COUNT] = { 0, };
 146         unsigned int emu_act;
 147
 148         in_update(actions);
 149         if (in_type == PSE_PAD_TYPE_ANALOGPAD)
 150                 in_update_analogs();
 151         emu_act = actions[IN_BINDTYPE_EMU];
 152         if (emu_act) {
 153                 int which = 0;
 154                 for (; !(emu_act & 1); emu_act >>= 1, which++)
 155                         ;
 156                 emu_act = which;
 157         }
 158         emu_set_action(emu_act);
 159
 160         in_keystate = actions[IN_BINDTYPE_PLAYER12];
 161
 162 #ifdef X11
 163         extern int x11_update_keys(void);
 164         in_keystate |= x11_update_keys();
 165 #endif
 166 }
 167
 168 #define MAX_LAG_FRAMES 3
 169
 170 #define tvdiff(tv, tv_old) \
 171         ((tv.tv_sec - tv_old.tv_sec) * 1000000 + tv.tv_usec - tv_old.tv_usec)
 172 // assumes us < 1000000
 173 #define tvadd(tv, us) { \
 174         tv.tv_usec += us; \
 175         if (tv.tv_usec >= 1000000) { \
 176                 tv.tv_usec -= 1000000; \
 177                 tv.tv_sec++; \
 178         } \
 179 }
 180
 181 /* called on every vsync */
 182 void pl_frame_limit(void)
 183 {
 184         static struct timeval tv_old, tv_expect;
 185         static int vsync_cnt_prev;
 186         struct timeval now;
 187         int diff;
 188
 189         vsync_cnt++;
 190
 191         /* doing input here because the pad is polled
 192          * thousands of times per frame for some reason */
 193         update_input();
 194
 195         pcnt_end(PCNT_ALL);
 196         gettimeofday(&now, 0);
 197
 198         if (now.tv_sec != tv_old.tv_sec) {
 199                 diff = tvdiff(now, tv_old);
 200                 vsps_cur = 0.0f;
 201                 if (0 < diff && diff < 2000000)
 202                         vsps_cur = 1000000.0f * (vsync_cnt - vsync_cnt_prev) / diff;
 203                 vsync_cnt_prev = vsync_cnt;
 204                 flips_per_sec = flip_cnt;
 205                 flip_cnt = 0;
 206                 tv_old = now;
 207                 if (g_opts & OPT_SHOWCPU)
 208                         tick_per_sec = get_cpu_ticks();
 209
 210                 if (hud_new_msg > 0) {
 211                         hud_new_msg--;
 212                         if (hud_new_msg == 0)
 213                                 hud_msg[0] = 0;
 214                 }
 215         }
 216 #ifdef PCNT
 217         static int ya_vsync_count;
 218         if (++ya_vsync_count == PCNT_FRAMES) {
 219                 pcnt_print(vsps_cur);
 220                 ya_vsync_count = 0;
 221         }
 222 #endif
 223
 224         tvadd(tv_expect, pl_frame_interval);
 225         diff = tvdiff(tv_expect, now);
 226         if (diff > MAX_LAG_FRAMES * pl_frame_interval || diff < -MAX_LAG_FRAMES * pl_frame_interval) {
 227                 //printf("pl_frame_limit reset, diff=%d, iv %d\n", diff, pl_frame_interval);
 228                 tv_expect = now;
 229                 diff = 0;
 230         }
 231
 232         if (!(g_opts & OPT_NO_FRAMELIM) && diff > pl_frame_interval) {
 233                 // yay for working usleep on pandora!
 234                 //printf("usleep %d\n", diff - pl_frame_interval / 2);
 235                 usleep(diff - pl_frame_interval / 2);
 236         }
 237
 238         if (UseFrameSkip) {
 239                 if (diff < -pl_frame_interval) {
 240                         // P.E.Op.S. makes skip decision based on this
 241                         fps_skip = 1.0f;
 242                         plugin_skip_advice = 1;
 243                 }
 244                 else if (diff >= 0) {
 245                         fps_skip = 100.0f;
 246                         plugin_skip_advice = 0;
 247                 }
 248         }
 249
 250         pcnt_start(PCNT_ALL);
 251 }
 252
 253 static void pl_text_out16_(int x, int y, const char *text)
 254 {
 255         int i, l, len = strlen(text), w = pl_fbdev_w;
 256         unsigned short *screen = (unsigned short *)pl_fbdev_buf + x + y * w;
 257         unsigned short val = 0xffff;
 258
 259         for (i = 0; i < len; i++, screen += 8)
 260         {
 261                 for (l = 0; l < 8; l++)
 262                 {
 263                         unsigned char fd = fontdata8x8[text[i] * 8 + l];
 264                         unsigned short *s = screen + l * w;
 265                         if (fd&0x80) s[0] = val;
 266                         if (fd&0x40) s[1] = val;
 267                         if (fd&0x20) s[2] = val;
 268                         if (fd&0x10) s[3] = val;
 269                         if (fd&0x08) s[4] = val;
 270                         if (fd&0x04) s[5] = val;
 271                         if (fd&0x02) s[6] = val;
 272                         if (fd&0x01) s[7] = val;
 273                 }
 274         }
 275 }
 276
 277 void pl_text_out16(int x, int y, const char *texto, ...)
 278 {
 279         va_list args;
 280         char    buffer[256];
 281
 282         va_start(args, texto);
 283         vsnprintf(buffer, sizeof(buffer), texto, args);
 284         va_end(args);
 285
 286         pl_text_out16_(x, y, buffer);
 287 }
 288
 289 static void pl_get_layer_pos(int *x, int *y, int *w, int *h)
 290 {
 291         *x = g_layer_x;
 292         *y = g_layer_y;
 293         *w = g_layer_w;
 294         *h = g_layer_h;
 295 }
 296
 297 const struct rearmed_cbs pl_rearmed_cbs = {
 298         pl_get_layer_pos,
 299         pl_fbdev_open,
 300         pl_fbdev_set_mode,
 301         pl_fbdev_flip,
 302         pl_fbdev_close,
 303         &plugin_skip_advice,
 304 };
 305
 306 /* watchdog */
 307 static void *watchdog_thread(void *unused)
 308 {
 309         int vsync_cnt_old = 0;
 310         int seen_dead = 0;
 311         int sleep_time = 5;
 312
 313 #ifndef NDEBUG
 314         // don't interfere with debug
 315         return NULL;
 316 #endif
 317         while (1)
 318         {
 319                 sleep(sleep_time);
 320
 321                 if (stop) {
 322                         seen_dead = 0;
 323                         sleep_time = 5;
 324                         continue;
 325                 }
 326                 if (vsync_cnt != vsync_cnt_old) {
 327                         vsync_cnt_old = vsync_cnt;
 328                         seen_dead = 0;
 329                         sleep_time = 2;
 330                         continue;
 331                 }
 332
 333                 seen_dead++;
 334                 sleep_time = 1;
 335                 if (seen_dead > 1)
 336                         fprintf(stderr, "watchdog: seen_dead %d\n", seen_dead);
 337                 if (seen_dead > 4) {
 338                         fprintf(stderr, "watchdog: lockup detected, aborting\n");
 339                         // we can't do any cleanup here really, the main thread is
 340                         // likely touching resources and would crash anyway
 341                         abort();
 342                 }
 343         }
 344 }
 345
 346 void pl_start_watchdog(void)
 347 {
 348         pthread_attr_t attr;
 349         pthread_t tid;
 350         int ret;
 351
 352         pthread_attr_init(&attr);
 353         pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
 354
 355         ret = pthread_create(&tid, &attr, watchdog_thread, NULL);
 356         if (ret != 0)
 357                 fprintf(stderr, "could not start watchdog: %d\n", ret);
 358 }
 359