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 static int vsync_usec_time;
  39 // P.E.Op.S.
  40 extern int UseFrameSkip;
  41 extern float fps_skip;
  42
  43 static int get_cpu_ticks(void)
  44 {
  45         static unsigned long last_utime;
  46         static int fd;
  47         unsigned long utime, ret;
  48         char buf[128];
  49
  50         if (fd == 0)
  51                 fd = open("/proc/self/stat", O_RDONLY);
  52         lseek(fd, 0, SEEK_SET);
  53         buf[0] = 0;
  54         read(fd, buf, sizeof(buf));
  55         buf[sizeof(buf) - 1] = 0;
  56
  57         sscanf(buf, "%*d %*s %*c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u %lu", &utime);
  58         ret = utime - last_utime;
  59         last_utime = utime;
  60         return ret;
  61 }
  62
  63 static void print_hud(void)
  64 {
  65         if (pl_fbdev_bpp == 16)
  66                 pl_text_out16(2, pl_fbdev_h - 10, "%s", hud_msg);
  67 }
  68
  69 static void print_fps(void)
  70 {
  71         if (pl_fbdev_bpp == 16)
  72                 pl_text_out16(2, pl_fbdev_h - 10, "%2d %4.1f", flips_per_sec, vsps_cur);
  73 }
  74
  75 static void print_cpu_usage(void)
  76 {
  77         if (pl_fbdev_bpp == 16)
  78                 pl_text_out16(pl_fbdev_w - 28, pl_fbdev_h - 10, "%3d", tick_per_sec);
  79 }
  80
  81 void *pl_fbdev_set_mode(int w, int h, int bpp)
  82 {
  83         void *ret;
  84
  85         if (w == pl_fbdev_w && h == pl_fbdev_h && bpp == pl_fbdev_bpp)
  86                 return pl_fbdev_buf;
  87
  88         pl_fbdev_w = w;
  89         pl_fbdev_h = h;
  90         pl_fbdev_bpp = bpp;
  91
  92         vout_fbdev_clear(layer_fb);
  93         ret = vout_fbdev_resize(layer_fb, w, h, bpp, 0, 0, 0, 0, 3);
  94         if (ret == NULL)
  95                 fprintf(stderr, "failed to set mode\n");
  96         else
  97                 pl_fbdev_buf = ret;
  98
  99         menu_notify_mode_change(w, h, bpp);
 100
 101         return pl_fbdev_buf;
 102 }
 103
 104 void *pl_fbdev_flip(void)
 105 {
 106         flip_cnt++;
 107
 108         if (pl_fbdev_buf != NULL) {
 109                 if (hud_msg[0] != 0)
 110                         print_hud();
 111                 else if (g_opts & OPT_SHOWFPS)
 112                         print_fps();
 113
 114                 if (g_opts & OPT_SHOWCPU)
 115                         print_cpu_usage();
 116         }
 117
 118         // let's flip now
 119         pl_fbdev_buf = vout_fbdev_flip(layer_fb);
 120         return pl_fbdev_buf;
 121 }
 122
 123 int pl_fbdev_open(void)
 124 {
 125         struct timeval now;
 126
 127         pl_fbdev_buf = vout_fbdev_flip(layer_fb);
 128         omap_enable_layer(1);
 129
 130         // try to align redraws to vsync
 131         vout_fbdev_wait_vsync(layer_fb);
 132         gettimeofday(&now, 0);
 133         vsync_usec_time = now.tv_usec;
 134         while (vsync_usec_time >= pl_frame_interval)
 135                 vsync_usec_time -= pl_frame_interval;
 136
 137         return 0;
 138 }
 139
 140 void pl_fbdev_close(void)
 141 {
 142         omap_enable_layer(0);
 143 }
 144
 145 void *pl_prepare_screenshot(int *w, int *h, int *bpp)
 146 {
 147         *w = pl_fbdev_w;
 148         *h = pl_fbdev_h;
 149         *bpp = pl_fbdev_bpp;
 150
 151         return pl_fbdev_buf;
 152 }
 153
 154 static void update_input(void)
 155 {
 156         int actions[IN_BINDTYPE_COUNT] = { 0, };
 157         unsigned int emu_act;
 158
 159         in_update(actions);
 160         if (in_type == PSE_PAD_TYPE_ANALOGPAD)
 161                 in_update_analogs();
 162         emu_act = actions[IN_BINDTYPE_EMU];
 163         if (emu_act) {
 164                 int which = 0;
 165                 for (; !(emu_act & 1); emu_act >>= 1, which++)
 166                         ;
 167                 emu_act = which;
 168         }
 169         emu_set_action(emu_act);
 170
 171         in_keystate = actions[IN_BINDTYPE_PLAYER12];
 172
 173 #ifdef X11
 174         extern int x11_update_keys(void);
 175         in_keystate |= x11_update_keys();
 176 #endif
 177 }
 178
 179 #define MAX_LAG_FRAMES 3
 180
 181 #define tvdiff(tv, tv_old) \
 182         ((tv.tv_sec - tv_old.tv_sec) * 1000000 + tv.tv_usec - tv_old.tv_usec)
 183 // assumes us < 1000000
 184 #define tvadd(tv, us) { \
 185         tv.tv_usec += us; \
 186         if (tv.tv_usec >= 1000000) { \
 187                 tv.tv_usec -= 1000000; \
 188                 tv.tv_sec++; \
 189         } \
 190 }
 191
 192 /* called on every vsync */
 193 void pl_frame_limit(void)
 194 {
 195         static struct timeval tv_old, tv_expect;
 196         static int vsync_cnt_prev;
 197         struct timeval now;
 198         int diff, usadj;
 199
 200         vsync_cnt++;
 201
 202         /* doing input here because the pad is polled
 203          * thousands of times per frame for some reason */
 204         update_input();
 205
 206         pcnt_end(PCNT_ALL);
 207         gettimeofday(&now, 0);
 208
 209         if (now.tv_sec != tv_old.tv_sec) {
 210                 diff = tvdiff(now, tv_old);
 211                 vsps_cur = 0.0f;
 212                 if (0 < diff && diff < 2000000)
 213                         vsps_cur = 1000000.0f * (vsync_cnt - vsync_cnt_prev) / diff;
 214                 vsync_cnt_prev = vsync_cnt;
 215                 flips_per_sec = flip_cnt;
 216                 flip_cnt = 0;
 217                 tv_old = now;
 218                 if (g_opts & OPT_SHOWCPU)
 219                         tick_per_sec = get_cpu_ticks();
 220
 221                 if (hud_new_msg > 0) {
 222                         hud_new_msg--;
 223                         if (hud_new_msg == 0)
 224                                 hud_msg[0] = 0;
 225                 }
 226         }
 227 #ifdef PCNT
 228         static int ya_vsync_count;
 229         if (++ya_vsync_count == PCNT_FRAMES) {
 230                 pcnt_print(vsps_cur);
 231                 ya_vsync_count = 0;
 232         }
 233 #endif
 234
 235         tvadd(tv_expect, pl_frame_interval);
 236         diff = tvdiff(tv_expect, now);
 237         if (diff > MAX_LAG_FRAMES * pl_frame_interval || diff < -MAX_LAG_FRAMES * pl_frame_interval) {
 238                 //printf("pl_frame_limit reset, diff=%d, iv %d\n", diff, pl_frame_interval);
 239                 tv_expect = now;
 240                 diff = 0;
 241                 // try to align with vsync
 242                 usadj = vsync_usec_time;
 243                 while (usadj < tv_expect.tv_usec - pl_frame_interval)
 244                         usadj += pl_frame_interval;
 245                 tv_expect.tv_usec = usadj;
 246         }
 247
 248         if (!(g_opts & OPT_NO_FRAMELIM) && diff > pl_frame_interval) {
 249                 // yay for working usleep on pandora!
 250                 //printf("usleep %d\n", diff - pl_frame_interval / 2);
 251                 usleep(diff - pl_frame_interval / 2);
 252         }
 253
 254         if (UseFrameSkip) {
 255                 if (diff < -pl_frame_interval) {
 256                         // P.E.Op.S. makes skip decision based on this
 257                         fps_skip = 1.0f;
 258                         plugin_skip_advice = 1;
 259                 }
 260                 else if (diff >= 0) {
 261                         fps_skip = 100.0f;
 262                         plugin_skip_advice = 0;
 263                 }
 264         }
 265
 266         pcnt_start(PCNT_ALL);
 267 }
 268
 269 static void pl_text_out16_(int x, int y, const char *text)
 270 {
 271         int i, l, len = strlen(text), w = pl_fbdev_w;
 272         unsigned short *screen = (unsigned short *)pl_fbdev_buf + x + y * w;
 273         unsigned short val = 0xffff;
 274
 275         for (i = 0; i < len; i++, screen += 8)
 276         {
 277                 for (l = 0; l < 8; l++)
 278                 {
 279                         unsigned char fd = fontdata8x8[text[i] * 8 + l];
 280                         unsigned short *s = screen + l * w;
 281                         if (fd&0x80) s[0] = val;
 282                         if (fd&0x40) s[1] = val;
 283                         if (fd&0x20) s[2] = val;
 284                         if (fd&0x10) s[3] = val;
 285                         if (fd&0x08) s[4] = val;
 286                         if (fd&0x04) s[5] = val;
 287                         if (fd&0x02) s[6] = val;
 288                         if (fd&0x01) s[7] = val;
 289                 }
 290         }
 291 }
 292
 293 void pl_text_out16(int x, int y, const char *texto, ...)
 294 {
 295         va_list args;
 296         char    buffer[256];
 297
 298         va_start(args, texto);
 299         vsnprintf(buffer, sizeof(buffer), texto, args);
 300         va_end(args);
 301
 302         pl_text_out16_(x, y, buffer);
 303 }
 304
 305 static void pl_get_layer_pos(int *x, int *y, int *w, int *h)
 306 {
 307         *x = g_layer_x;
 308         *y = g_layer_y;
 309         *w = g_layer_w;
 310         *h = g_layer_h;
 311 }
 312
 313 const struct rearmed_cbs pl_rearmed_cbs = {
 314         pl_get_layer_pos,
 315         pl_fbdev_open,
 316         pl_fbdev_set_mode,
 317         pl_fbdev_flip,
 318         pl_fbdev_close,
 319         &plugin_skip_advice,
 320 };
 321
 322 /* watchdog */
 323 static void *watchdog_thread(void *unused)
 324 {
 325         int vsync_cnt_old = 0;
 326         int seen_dead = 0;
 327         int sleep_time = 5;
 328
 329 #ifndef NDEBUG
 330         // don't interfere with debug
 331         return NULL;
 332 #endif
 333         while (1)
 334         {
 335                 sleep(sleep_time);
 336
 337                 if (stop) {
 338                         seen_dead = 0;
 339                         sleep_time = 5;
 340                         continue;
 341                 }
 342                 if (vsync_cnt != vsync_cnt_old) {
 343                         vsync_cnt_old = vsync_cnt;
 344                         seen_dead = 0;
 345                         sleep_time = 2;
 346                         continue;
 347                 }
 348
 349                 seen_dead++;
 350                 sleep_time = 1;
 351                 if (seen_dead > 1)
 352                         fprintf(stderr, "watchdog: seen_dead %d\n", seen_dead);
 353                 if (seen_dead > 4) {
 354                         fprintf(stderr, "watchdog: lockup detected, aborting\n");
 355                         // we can't do any cleanup here really, the main thread is
 356                         // likely touching resources and would crash anyway
 357                         abort();
 358                 }
 359         }
 360 }
 361
 362 void pl_start_watchdog(void)
 363 {
 364         pthread_attr_t attr;
 365         pthread_t tid;
 366         int ret;
 367
 368         pthread_attr_init(&attr);
 369         pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
 370
 371         ret = pthread_create(&tid, &attr, watchdog_thread, NULL);
 372         if (ret != 0)
 373                 fprintf(stderr, "could not start watchdog: %d\n", ret);
 374 }
 375