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
  18 #include "plugin_lib.h"
  19 #include "linux/fbdev.h"
  20 #include "common/fonts.h"
  21 #include "common/input.h"
  22 #include "omap.h"
  23 #include "menu.h"
  24 #include "pcnt.h"
  25 #include "../libpcsxcore/new_dynarec/new_dynarec.h"
  26
  27 void *pl_fbdev_buf;
  28 int pl_frame_interval;
  29 int keystate;
  30 static int pl_fbdev_w, pl_fbdev_h, pl_fbdev_bpp;
  31 static int flip_cnt, vsync_cnt, flips_per_sec, tick_per_sec;
  32 static float vsps_cur;
  33
  34 static int get_cpu_ticks(void)
  35 {
  36         static unsigned long last_utime;
  37         static int fd;
  38         unsigned long utime, ret;
  39         char buf[128];
  40
  41         if (fd == 0)
  42                 fd = open("/proc/self/stat", O_RDONLY);
  43         lseek(fd, 0, SEEK_SET);
  44         buf[0] = 0;
  45         read(fd, buf, sizeof(buf));
  46         buf[sizeof(buf) - 1] = 0;
  47
  48         sscanf(buf, "%*d %*s %*c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u %lu", &utime);
  49         ret = utime - last_utime;
  50         last_utime = utime;
  51         return ret;
  52 }
  53
  54 static void print_fps(void)
  55 {
  56         if (pl_fbdev_bpp == 16)
  57                 pl_text_out16(2, pl_fbdev_h - 10, "%2d %4.1f", flips_per_sec, vsps_cur);
  58 }
  59
  60 static void print_cpu_usage(void)
  61 {
  62         if (pl_fbdev_bpp == 16)
  63                 pl_text_out16(pl_fbdev_w - 28, pl_fbdev_h - 10, "%3d", tick_per_sec);
  64 }
  65
  66 void *pl_fbdev_set_mode(int w, int h, int bpp)
  67 {
  68         void *ret;
  69
  70         if (w == pl_fbdev_w && h == pl_fbdev_h && bpp == pl_fbdev_bpp)
  71                 return pl_fbdev_buf;
  72
  73         pl_fbdev_w = w;
  74         pl_fbdev_h = h;
  75         pl_fbdev_bpp = bpp;
  76
  77         vout_fbdev_clear(layer_fb);
  78         ret = vout_fbdev_resize(layer_fb, w, h, bpp, 0, 0, 0, 0, 3);
  79         if (ret == NULL)
  80                 fprintf(stderr, "failed to set mode\n");
  81         else
  82                 pl_fbdev_buf = ret;
  83
  84         menu_notify_mode_change(w, h, bpp);
  85
  86         return pl_fbdev_buf;
  87 }
  88
  89 void *pl_fbdev_flip(void)
  90 {
  91         flip_cnt++;
  92
  93         if (pl_fbdev_buf != NULL) {
  94                 if (g_opts & OPT_SHOWFPS)
  95                         print_fps();
  96                 if (g_opts & OPT_SHOWCPU)
  97                         print_cpu_usage();
  98         }
  99
 100         // let's flip now
 101         pl_fbdev_buf = vout_fbdev_flip(layer_fb);
 102         return pl_fbdev_buf;
 103 }
 104
 105 int pl_fbdev_open(void)
 106 {
 107         pl_fbdev_buf = vout_fbdev_flip(layer_fb);
 108         omap_enable_layer(1);
 109         return 0;
 110 }
 111
 112 void pl_fbdev_close(void)
 113 {
 114         omap_enable_layer(0);
 115 }
 116
 117 static void update_input(void)
 118 {
 119         int actions[IN_BINDTYPE_COUNT] = { 0, };
 120
 121         in_update(actions);
 122         if (actions[IN_BINDTYPE_EMU] & PEV_MENU)
 123                 stop = 1;
 124         keystate = actions[IN_BINDTYPE_PLAYER12];
 125
 126 #ifdef X11
 127         extern int x11_update_keys(void);
 128         keystate |= x11_update_keys();
 129 #endif
 130 }
 131
 132 #define MAX_LAG_FRAMES 3
 133
 134 #define tvdiff(tv, tv_old) \
 135         ((tv.tv_sec - tv_old.tv_sec) * 1000000 + tv.tv_usec - tv_old.tv_usec)
 136 // assumes us < 1000000
 137 #define tvadd(tv, us) { \
 138         tv.tv_usec += us; \
 139         if (tv.tv_usec >= 1000000) { \
 140                 tv.tv_usec -= 1000000; \
 141                 tv.tv_sec++; \
 142         } \
 143 }
 144
 145 /* called on every vsync */
 146 void pl_frame_limit(void)
 147 {
 148         static struct timeval tv_old, tv_expect;
 149         struct timeval now;
 150         int diff;
 151
 152         vsync_cnt++;
 153
 154         /* doing input here because the pad is polled
 155          * thousands of times per frame for some reason */
 156         update_input();
 157
 158         pcnt_end(PCNT_ALL);
 159         gettimeofday(&now, 0);
 160
 161         if (now.tv_sec != tv_old.tv_sec) {
 162                 diff = tvdiff(now, tv_old);
 163                 vsps_cur = 0.0f;
 164                 if (0 < diff && diff < 2000000)
 165                         vsps_cur = 1000000.0f * vsync_cnt / diff;
 166                 flips_per_sec = flip_cnt;
 167                 vsync_cnt = flip_cnt = 0;
 168                 tv_old = now;
 169                 if (g_opts & OPT_SHOWCPU)
 170                         tick_per_sec = get_cpu_ticks();
 171         }
 172 #ifdef PCNT
 173         static int ya_vsync_count;
 174         if (++ya_vsync_count == PCNT_FRAMES) {
 175                 pcnt_print(vsps_cur);
 176                 ya_vsync_count = 0;
 177         }
 178 #endif
 179
 180         if (!(g_opts & OPT_NO_FRAMELIM)) {
 181                 tvadd(tv_expect, pl_frame_interval);
 182                 diff = tvdiff(tv_expect, now);
 183                 if (diff > MAX_LAG_FRAMES * pl_frame_interval || diff < -MAX_LAG_FRAMES * pl_frame_interval) {
 184                         //printf("pl_frame_limit reset, diff=%d, iv %d\n", diff, pl_frame_interval);
 185                         tv_expect = now;
 186                 }
 187                 else if (diff > pl_frame_interval) {
 188                         // yay for working usleep on pandora!
 189                         //printf("usleep %d\n", diff - pl_frame_interval / 2);
 190                         usleep(diff - pl_frame_interval / 2);
 191                 }
 192         }
 193
 194         pcnt_start(PCNT_ALL);
 195 }
 196
 197 static void pl_text_out16_(int x, int y, const char *text)
 198 {
 199         int i, l, len = strlen(text), w = pl_fbdev_w;
 200         unsigned short *screen = (unsigned short *)pl_fbdev_buf + x + y * w;
 201         unsigned short val = 0xffff;
 202
 203         for (i = 0; i < len; i++, screen += 8)
 204         {
 205                 for (l = 0; l < 8; l++)
 206                 {
 207                         unsigned char fd = fontdata8x8[text[i] * 8 + l];
 208                         unsigned short *s = screen + l * w;
 209                         if (fd&0x80) s[0] = val;
 210                         if (fd&0x40) s[1] = val;
 211                         if (fd&0x20) s[2] = val;
 212                         if (fd&0x10) s[3] = val;
 213                         if (fd&0x08) s[4] = val;
 214                         if (fd&0x04) s[5] = val;
 215                         if (fd&0x02) s[6] = val;
 216                         if (fd&0x01) s[7] = val;
 217                 }
 218         }
 219 }
 220
 221 void pl_text_out16(int x, int y, const char *texto, ...)
 222 {
 223         va_list args;
 224         char    buffer[256];
 225
 226         va_start(args, texto);
 227         vsnprintf(buffer, sizeof(buffer), texto, args);
 228         va_end(args);
 229
 230         pl_text_out16_(x, y, buffer);
 231 }
 232
 233 static void pl_get_layer_pos(int *x, int *y, int *w, int *h)
 234 {
 235         *x = g_layer_x;
 236         *y = g_layer_y;
 237         *w = g_layer_w;
 238         *h = g_layer_h;
 239 }
 240
 241 extern int UseFrameSkip; // hmh
 242
 243 const struct rearmed_cbs pl_rearmed_cbs = {
 244         pl_get_layer_pos,
 245         pl_fbdev_open,
 246         pl_fbdev_set_mode,
 247         pl_fbdev_flip,
 248         pl_fbdev_close,
 249         &UseFrameSkip,
 250 };
 251