platform/common/plat_sdl.c

   1 /*
   2  * PicoDrive
   3  * (C) notaz, 2013
   4  * (C) irixxxx, 2020-2024
   5  *
   6  * This work is licensed under the terms of MAME license.
   7  * See COPYING file in the top-level directory.
   8  */
   9
  10 #include <stdio.h>
  11
  12 #include "../libpicofe/input.h"
  13 #include "../libpicofe/plat.h"
  14 #include "../libpicofe/plat_sdl.h"
  15 #include "../libpicofe/in_sdl.h"
  16 #include "../libpicofe/gl.h"
  17 #include "emu.h"
  18 #include "menu_pico.h"
  19 #include "input_pico.h"
  20 #include "plat_sdl.h"
  21 #include "version.h"
  22
  23 #include <pico/pico_int.h>
  24
  25 static void *shadow_fb;
  26 static int shadow_size;
  27 static struct area { int w, h; } area;
  28
  29 static struct in_pdata in_sdl_platform_data;
  30
  31 static int hide_cursor;
  32
  33 static int sound_rates[] = { 8000, 11025, 16000, 22050, 32000, 44100, 53000, -1 };
  34 struct plat_target plat_target = { .sound_rates = sound_rates };
  35
  36 #if defined __MIYOO__
  37 const char *plat_device = "miyoo";
  38 #elif defined __GCW0__
  39 const char *plat_device = "gcw0";
  40 #elif defined __RETROFW__
  41 const char *plat_device = "retrofw";
  42 #elif defined __DINGUX__
  43 const char *plat_device = "dingux";
  44 #else
  45 const char *plat_device = "";
  46 #endif
  47
  48 int plat_parse_arg(int argc, char *argv[], int *x)
  49 {
  50 #if defined __OPENDINGUX__
  51         if (*plat_device == '\0' && strcasecmp(argv[*x], "-device") == 0) {
  52                 plat_device = argv[++(*x)];
  53                 return 0;
  54         }
  55 #endif
  56         return 1;
  57 }
  58
  59 void plat_early_init(void)
  60 {
  61 }
  62
  63 int plat_target_init(void)
  64 {
  65 #if defined __ODBETA__
  66         if (*plat_device == '\0') {
  67                 /* ODbeta should always have a device tree, get the model info from there */
  68                 FILE *f = fopen("/proc/device-tree/compatible", "r");
  69                 if (f) {
  70                         char buf[10];
  71                         int c = fread(buf, 1, sizeof(buf), f);
  72                         if (strncmp(buf, "gcw,", 4) == 0)
  73                                 plat_device = "gcw0";
  74                 }
  75         }
  76 #endif
  77         return 0;
  78 }
  79
  80 void plat_target_finish(void)
  81 {
  82 }
  83
  84 /* YUV stuff */
  85 static int yuv_ry[32], yuv_gy[32], yuv_by[32];
  86 static unsigned char yuv_u[32 * 2], yuv_v[32 * 2];
  87 static unsigned char yuv_y[256];
  88 static struct uyvy { uint32_t y:8; uint32_t vyu:24; } yuv_uyvy[65536];
  89
  90 void bgr_to_uyvy_init(void)
  91 {
  92         int i, v;
  93
  94         /* init yuv converter:
  95             y0 = (int)((0.299f * r0) + (0.587f * g0) + (0.114f * b0));
  96             y1 = (int)((0.299f * r1) + (0.587f * g1) + (0.114f * b1));
  97             u = (int)(8 * 0.565f * (b0 - y0)) + 128;
  98             v = (int)(8 * 0.713f * (r0 - y0)) + 128;
  99         */
 100         for (i = 0; i < 32; i++) {
 101                 yuv_ry[i] = (int)(0.299f * i * 65536.0f + 0.5f);
 102                 yuv_gy[i] = (int)(0.587f * i * 65536.0f + 0.5f);
 103                 yuv_by[i] = (int)(0.114f * i * 65536.0f + 0.5f);
 104         }
 105         for (i = -32; i < 32; i++) {
 106                 v = (int)(8 * 0.565f * i) + 128;
 107                 if (v < 0)
 108                         v = 0;
 109                 if (v > 255)
 110                         v = 255;
 111                 yuv_u[i + 32] = v;
 112                 v = (int)(8 * 0.713f * i) + 128;
 113                 if (v < 0)
 114                         v = 0;
 115                 if (v > 255)
 116                         v = 255;
 117                 yuv_v[i + 32] = v;
 118         }
 119         // valid Y range seems to be 16..235
 120         for (i = 0; i < 256; i++) {
 121                 yuv_y[i] = 16 + 219 * i / 32;
 122         }
 123         // everything combined into one large array for speed
 124         for (i = 0; i < 65536; i++) {
 125                 int r = (i >> 11) & 0x1f, g = (i >> 6) & 0x1f, b = (i >> 0) & 0x1f;
 126                 int y = (yuv_ry[r] + yuv_gy[g] + yuv_by[b]) >> 16;
 127                 yuv_uyvy[i].y = yuv_y[y];
 128 #if CPU_IS_LE
 129                 yuv_uyvy[i].vyu = (yuv_v[r-y + 32] << 16) | (yuv_y[y] << 8) | yuv_u[b-y + 32];
 130 #else
 131                 yuv_uyvy[i].vyu = (yuv_v[b-y + 32] << 16) | (yuv_y[y] << 8) | yuv_u[r-y + 32];
 132 #endif
 133         }
 134 }
 135
 136 void rgb565_to_uyvy(void *d, const void *s, int w, int h, int pitch, int dpitch, int x2)
 137 {
 138         uint32_t *dst = d;
 139         const uint16_t *src = s;
 140         int i;
 141
 142         if (x2) while (h--) {
 143                 for (i = w; i >= 4; src += 4, dst += 4, i -= 4)
 144                 {
 145                         struct uyvy *uyvy0 = yuv_uyvy + src[0], *uyvy1 = yuv_uyvy + src[1];
 146                         struct uyvy *uyvy2 = yuv_uyvy + src[2], *uyvy3 = yuv_uyvy + src[3];
 147 #if CPU_IS_LE
 148                         dst[0] = (uyvy0->y << 24) | uyvy0->vyu;
 149                         dst[1] = (uyvy1->y << 24) | uyvy1->vyu;
 150                         dst[2] = (uyvy2->y << 24) | uyvy2->vyu;
 151                         dst[3] = (uyvy3->y << 24) | uyvy3->vyu;
 152 #else
 153                         dst[0] = uyvy0->y | (uyvy0->vyu << 8);
 154                         dst[1] = uyvy1->y | (uyvy1->vyu << 8);
 155                         dst[2] = uyvy2->y | (uyvy2->vyu << 8);
 156                         dst[3] = uyvy3->y | (uyvy3->vyu << 8);
 157 #endif
 158                 }
 159                 src += pitch - (w-i);
 160                 dst += (dpitch - 2*(w-i))/2;
 161         } else while (h--) {
 162                 for (i = w; i >= 4; src += 4, dst += 2, i -= 4)
 163                 {
 164                         struct uyvy *uyvy0 = yuv_uyvy + src[0], *uyvy1 = yuv_uyvy + src[1];
 165                         struct uyvy *uyvy2 = yuv_uyvy + src[2], *uyvy3 = yuv_uyvy + src[3];
 166 #if CPU_IS_LE
 167                         dst[0] = (uyvy1->y << 24) | uyvy0->vyu;
 168                         dst[1] = (uyvy3->y << 24) | uyvy2->vyu;
 169 #else
 170                         dst[0] = uyvy1->y | (uyvy0->vyu << 8);
 171                         dst[1] = uyvy3->y | (uyvy2->vyu << 8);
 172 #endif
 173                 }
 174                 src += pitch - (w-i);
 175                 dst += (dpitch - (w-i))/2;
 176         }
 177 }
 178
 179 void copy_intscale(void *dst, int w, int h, int pp, void *src, int sw, int sh, int spp)
 180 {
 181         int xf = w / sw, yf = h / sh, f = xf < yf ? xf : yf;
 182         int wf = f * sw, hf = f * sh;
 183         int x = (w - wf)/2, y = (h - hf)/2;
 184         uint16_t *p = (uint16_t *)dst;
 185         uint16_t *q = (uint16_t *)src;
 186
 187         // copy 16bit image with scaling by an integer factor
 188         int i, j, k, l;
 189         p += y * pp + x;
 190         for (i = 0; i < sh; i++) {
 191                 for (j = 0; j < sw; j++, q++)
 192                         for (l = 0; l < f; l++)
 193                                 *p++ = *q;
 194                 p += pp - wf;
 195                 q += spp - sw;
 196                 for (k = 1; k < f; k++) {
 197                         memcpy(p, p-pp, wf*2);
 198                         p += pp;
 199                 }
 200         }
 201 }
 202
 203 static int clear_buf_cnt, clear_stat_cnt;
 204
 205 static void resize_buffers(void)
 206 {
 207         // make sure the shadow buffers are big enough in case of resize
 208         if (shadow_size < g_menuscreen_w * g_menuscreen_h * 2) {
 209                 shadow_size = g_menuscreen_w * g_menuscreen_h * 2;
 210                 shadow_fb = realloc(shadow_fb, shadow_size);
 211                 g_menubg_ptr = realloc(g_menubg_ptr, shadow_size);
 212         }
 213 }
 214
 215 void plat_video_set_size(int w, int h)
 216 {
 217         if ((plat_sdl_overlay || plat_sdl_gl_active) && w <= 320 && h <= 240) {
 218                 // scale to the window, but mind aspect ratio (scaled to 4:3):
 219                 // w *= win_aspect / 4:3_aspect or h *= 4:3_aspect / win_aspect
 220                 if (g_menuscreen_w * 3/4 >= g_menuscreen_h)
 221                         w = (w * 3 * g_menuscreen_w/g_menuscreen_h)/4 & ~1;
 222                 else
 223                         h = (h * 4 * g_menuscreen_h/g_menuscreen_w)/3 & ~1;
 224         }
 225
 226         if (area.w != w || area.h != h) {
 227                 area = (struct area) { w, h };
 228
 229                 if (plat_sdl_overlay || plat_sdl_gl_active || !plat_sdl_is_windowed()) {
 230                         // create surface for overlays, or try using a hw scaler
 231                         if (plat_sdl_change_video_mode(w, h, 0) < 0) {
 232                                 // failed, revert to original resolution
 233                                 area = (struct area) { g_screen_width,g_screen_height };
 234                                 plat_sdl_change_video_mode(g_screen_width, g_screen_height, 0);
 235                         }
 236                 }
 237                 if (plat_sdl_overlay || plat_sdl_gl_active) {
 238                         // use shadow buffer for overlays
 239                         g_screen_width = area.w;
 240                         g_screen_height = area.h;
 241                         g_screen_ppitch = area.w;
 242                         g_screen_ptr = shadow_fb;
 243                 } else if (plat_sdl_is_windowed() &&
 244                     (plat_sdl_screen->w >= 320*2 || plat_sdl_screen->h >= 240*2 ||
 245                      plat_sdl_screen->w < 320 || plat_sdl_screen->h < 240)) {
 246                         // shadow buffer for integer scaling
 247                         g_screen_width = 320;
 248                         g_screen_height = 240;
 249                         g_screen_ppitch = 320;
 250                         g_screen_ptr = shadow_fb;
 251                 } else {
 252                         // unscaled SDL window buffer can be used directly
 253                         g_screen_width = plat_sdl_screen->w;
 254                         g_screen_height = plat_sdl_screen->h;
 255                         g_screen_ppitch = plat_sdl_screen->pitch/2;
 256                         g_screen_ptr = plat_sdl_screen->pixels;
 257                 }
 258         }
 259 }
 260
 261 void plat_video_set_shadow(int w, int h)
 262 {
 263         g_screen_width = w;
 264         g_screen_height = h;
 265         g_screen_ppitch = w;
 266         g_screen_ptr = shadow_fb;
 267 }
 268
 269 void plat_video_flip(void)
 270 {
 271         resize_buffers();
 272
 273         if (plat_sdl_overlay != NULL) {
 274                 SDL_Rect dstrect =
 275                         { 0, 0, plat_sdl_screen->w, plat_sdl_screen->h };
 276                 SDL_LockYUVOverlay(plat_sdl_overlay);
 277                 if (area.w <= plat_sdl_overlay->w && area.h <= plat_sdl_overlay->h)
 278                         rgb565_to_uyvy(plat_sdl_overlay->pixels[0], shadow_fb,
 279                                         area.w, area.h, g_screen_ppitch,
 280                                         plat_sdl_overlay->pitches[0]/2,
 281                                         plat_sdl_overlay->w >= 2*area.w);
 282                 SDL_UnlockYUVOverlay(plat_sdl_overlay);
 283                 SDL_DisplayYUVOverlay(plat_sdl_overlay, &dstrect);
 284         }
 285         else if (plat_sdl_gl_active) {
 286                 gl_flip(shadow_fb, g_screen_ppitch, g_screen_height);
 287         }
 288         else {
 289                 int copy = g_screen_ptr != plat_sdl_screen->pixels;
 290                 if (copy)
 291                         copy_intscale(plat_sdl_screen->pixels, plat_sdl_screen->w,
 292                                 plat_sdl_screen->h, plat_sdl_screen->pitch/2,
 293                                 shadow_fb, g_screen_width, g_screen_height, g_screen_ppitch);
 294
 295                 if (SDL_MUSTLOCK(plat_sdl_screen))
 296                         SDL_UnlockSurface(plat_sdl_screen);
 297                 SDL_Flip(plat_sdl_screen);
 298
 299                 // take over resized settings for the physical SDL surface
 300                 if ((plat_sdl_screen->w != g_menuscreen_w ||
 301                     plat_sdl_screen->h != g_menuscreen_h)  && plat_sdl_is_windowed() &&
 302                     SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 303                         plat_sdl_change_video_mode(g_menuscreen_w, g_menuscreen_h, -1);
 304                         SDL_WM_GrabInput(SDL_GRAB_OFF);
 305                         g_menuscreen_pp = plat_sdl_screen->pitch/2;
 306
 307                         // force upper layer to use new dimensions
 308                         plat_video_set_shadow(g_screen_width, g_screen_height);
 309                         plat_video_set_buffer(g_screen_ptr);
 310                         rendstatus_old = -1;
 311                 } else if (!copy) {
 312                         g_screen_ppitch = plat_sdl_screen->pitch/2;
 313                         g_screen_ptr = plat_sdl_screen->pixels;
 314                         plat_video_set_buffer(g_screen_ptr);
 315                 }
 316
 317                 if (SDL_MUSTLOCK(plat_sdl_screen))
 318                         SDL_LockSurface(plat_sdl_screen);
 319
 320                 if (clear_buf_cnt) {
 321                         memset(plat_sdl_screen->pixels, 0, plat_sdl_screen->pitch*plat_sdl_screen->h);
 322                         clear_buf_cnt--;
 323                 }
 324         }
 325
 326         // for overlay/gl modes buffer ptr may change on resize
 327         if ((plat_sdl_overlay || plat_sdl_gl_active) &&
 328             (g_screen_ptr != shadow_fb || g_screen_ppitch != g_screen_width)) {
 329                 g_screen_ppitch = g_screen_width;
 330                 g_screen_ptr = shadow_fb;
 331                 plat_video_set_buffer(g_screen_ptr);
 332         }
 333         if (clear_stat_cnt) {
 334                 unsigned short *d = (unsigned short *)g_screen_ptr + g_screen_ppitch * g_screen_height;
 335                 int l = g_screen_ppitch * 8;
 336                 memset((int *)(d - l), 0, l * 2);
 337                 clear_stat_cnt--;
 338         }
 339 }
 340
 341 void plat_video_wait_vsync(void)
 342 {
 343 }
 344
 345 void plat_video_clear_status(void)
 346 {
 347         clear_stat_cnt = 3; // do it thrice in case of triple buffering
 348 }
 349
 350 void plat_video_clear_buffers(void)
 351 {
 352         int count = g_menuscreen_w * g_menuscreen_h;
 353         if (count < area.w * area.h) count = area.w * area.h;
 354         memset(shadow_fb, 0, count * 2);
 355         if (plat_sdl_overlay)
 356                 plat_sdl_overlay_clear();
 357         memset(plat_sdl_screen->pixels, 0, plat_sdl_screen->pitch*plat_sdl_screen->h);
 358         clear_buf_cnt = 3; // do it thrice in case of triple buffering
 359 }
 360
 361 void plat_video_menu_update(void)
 362 {
 363         // WM may grab input while resizing the window; our own window resizing
 364         // is only safe if the WM isn't active anymore, so try to grab input.
 365         if (plat_sdl_is_windowed() && SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 366                 // w/h might change in resize callback
 367                 int w, h;
 368                 do {
 369                         w = g_menuscreen_w, h = g_menuscreen_h;
 370                         plat_sdl_change_video_mode(w, h, -1);
 371                 } while (w != g_menuscreen_w || h != g_menuscreen_h);
 372                 SDL_WM_GrabInput(SDL_GRAB_OFF);
 373         }
 374
 375         // update pitch as it is needed by the menu bg scaler
 376         if (plat_sdl_overlay || plat_sdl_gl_active)
 377                 g_menuscreen_pp = g_menuscreen_w;
 378         else
 379                 g_menuscreen_pp = plat_sdl_screen->pitch / 2;
 380
 381         resize_buffers();
 382 }
 383
 384 void plat_video_menu_enter(int is_rom_loaded)
 385 {
 386         if (SDL_MUSTLOCK(plat_sdl_screen))
 387                 SDL_UnlockSurface(plat_sdl_screen);
 388 }
 389
 390 void plat_video_menu_begin(void)
 391 {
 392         plat_video_menu_update(); // just in case
 393
 394         if (plat_sdl_overlay || plat_sdl_gl_active)
 395                 g_menuscreen_ptr = shadow_fb;
 396         else {
 397                 if (SDL_MUSTLOCK(plat_sdl_screen))
 398                         SDL_LockSurface(plat_sdl_screen);
 399                 g_menuscreen_ptr = plat_sdl_screen->pixels;
 400         }
 401 }
 402
 403 void plat_video_menu_end(void)
 404 {
 405         if (plat_sdl_overlay != NULL) {
 406                 SDL_Rect dstrect =
 407                         { 0, 0, plat_sdl_screen->w, plat_sdl_screen->h };
 408
 409                 SDL_LockYUVOverlay(plat_sdl_overlay);
 410                 if (g_menuscreen_w <= plat_sdl_overlay->w && g_menuscreen_h <= plat_sdl_overlay->h)
 411                         rgb565_to_uyvy(plat_sdl_overlay->pixels[0], shadow_fb,
 412                                 g_menuscreen_w, g_menuscreen_h, g_menuscreen_pp,
 413                                 plat_sdl_overlay->pitches[0]/2,
 414                                 plat_sdl_overlay->w >= 2 * g_menuscreen_w);
 415                 SDL_UnlockYUVOverlay(plat_sdl_overlay);
 416
 417                 SDL_DisplayYUVOverlay(plat_sdl_overlay, &dstrect);
 418         }
 419         else if (plat_sdl_gl_active) {
 420                 gl_flip(g_menuscreen_ptr, g_menuscreen_pp, g_menuscreen_h);
 421         }
 422         else {
 423                 if (SDL_MUSTLOCK(plat_sdl_screen))
 424                         SDL_UnlockSurface(plat_sdl_screen);
 425                 SDL_Flip(plat_sdl_screen);
 426         }
 427         g_menuscreen_ptr = NULL;
 428 }
 429
 430 void plat_video_menu_leave(void)
 431 {
 432 }
 433
 434 void plat_video_loop_prepare(void)
 435 {
 436         int w = g_menuscreen_w, h = g_menuscreen_h;
 437
 438         // take over any new vout settings
 439         area = (struct area) { 0, 0 };
 440         plat_sdl_change_video_mode(0, 0, 0);
 441         resize_buffers();
 442
 443         // switch over to scaled output if available, but keep the aspect ratio
 444         if (plat_sdl_overlay || plat_sdl_gl_active)
 445                 w = 320, h = 240;
 446
 447         g_screen_width = w, g_screen_height = h;
 448         plat_video_set_size(w, h);
 449
 450         if (!(plat_sdl_overlay || plat_sdl_gl_active))
 451                 if (SDL_MUSTLOCK(plat_sdl_screen))
 452                         SDL_LockSurface(plat_sdl_screen);
 453
 454         plat_video_set_buffer(g_screen_ptr);
 455 }
 456
 457 void plat_show_cursor(int on)
 458 {
 459         SDL_ShowCursor(on && !hide_cursor);
 460 }
 461
 462 int plat_grab_cursor(int on)
 463 {
 464         SDL_WM_GrabInput(on ? SDL_GRAB_ON : SDL_GRAB_OFF);
 465         return on;
 466 }
 467
 468 int plat_has_wm(void)
 469 {
 470         return plat_sdl_is_windowed();
 471 }
 472
 473 static void plat_sdl_resize(int w, int h)
 474 {
 475         // take over new settings
 476 #if defined(__OPENDINGUX__)
 477         if (currentConfig.vscaling != EOPT_SCALE_HW &&
 478             plat_sdl_screen->w == 320 && plat_sdl_screen->h == 480) {
 479                 g_menuscreen_h = 240;
 480                 g_menuscreen_w = 320;
 481         } else
 482 #endif
 483         {
 484                 g_menuscreen_h = plat_sdl_screen->h;
 485                 g_menuscreen_w = plat_sdl_screen->w;
 486 #if 0 // auto resizing may be nice, but creates problems on some SDL platforms
 487                 if (!plat_sdl_overlay && !plat_sdl_gl_active &&
 488                     plat_sdl_is_windowed() && !plat_sdl_is_fullscreen()) {
 489                         // in SDL window mode, adapt window to integer scaling
 490                         if (g_menuscreen_w * 3/4 >= g_menuscreen_h)
 491                                 g_menuscreen_w = g_menuscreen_h * 4/3;
 492                         else
 493                                 g_menuscreen_h = g_menuscreen_w * 3/4;
 494                         g_menuscreen_w = g_menuscreen_w/320*320;
 495                         g_menuscreen_h = g_menuscreen_h/240*240;
 496                         if (g_menuscreen_w == 0) {
 497                                 g_menuscreen_w = 320;
 498                                 g_menuscreen_h = 240;
 499                         }
 500                 }
 501 #endif
 502         }
 503
 504         rendstatus_old = -1;
 505 }
 506
 507 static void plat_sdl_quit(void)
 508 {
 509         // for now..
 510         exit(1);
 511 }
 512
 513 void plat_init(void)
 514 {
 515         int ret;
 516
 517         ret = plat_sdl_init();
 518         if (ret != 0)
 519                 exit(1);
 520
 521 #if defined(__OPENDINGUX__)
 522         // opendingux on JZ47x0 may falsely report a HW overlay, fix to window
 523         plat_target.vout_method = 0;
 524 #elif !defined(__MIYOO__) && !defined(__RETROFW__) && !defined(__DINGUX__)
 525         if (! plat_sdl_is_windowed())
 526 #endif
 527         {
 528                 hide_cursor = 1;
 529                 SDL_ShowCursor(0);
 530         }
 531
 532         plat_sdl_quit_cb = plat_sdl_quit;
 533         plat_sdl_resize_cb = plat_sdl_resize;
 534
 535         SDL_WM_SetCaption("PicoDrive " VERSION, NULL);
 536
 537         g_menuscreen_pp = g_menuscreen_w;
 538         g_menuscreen_ptr = NULL;
 539
 540         shadow_size = g_menuscreen_w * g_menuscreen_h * 2;
 541         if (shadow_size < 320 * 480 * 2)
 542                 shadow_size = 320 * 480 * 2;
 543
 544         shadow_fb = calloc(1, shadow_size);
 545         g_menubg_ptr = calloc(1, shadow_size);
 546         if (shadow_fb == NULL || g_menubg_ptr == NULL) {
 547                 fprintf(stderr, "OOM\n");
 548                 exit(1);
 549         }
 550
 551         g_screen_width = 320;
 552         g_screen_height = 240;
 553         g_screen_ppitch = 320;
 554         g_screen_ptr = shadow_fb;
 555
 556         plat_target_setup_input();
 557         in_sdl_platform_data.defbinds = in_sdl_defbinds,
 558         in_sdl_platform_data.kmap_size = in_sdl_key_map_sz,
 559         in_sdl_platform_data.key_map = in_sdl_key_map,
 560         in_sdl_platform_data.jmap_size = in_sdl_joy_map_sz,
 561         in_sdl_platform_data.joy_map = in_sdl_joy_map,
 562         in_sdl_platform_data.key_names = in_sdl_key_names,
 563         in_sdl_platform_data.kbd_map = in_sdl_kbd_map,
 564         in_sdl_init(&in_sdl_platform_data, plat_sdl_event_handler);
 565         in_probe();
 566
 567         // create an artificial resize event to initialize mouse scaling
 568         SDL_Event ev;
 569         ev.resize.type = SDL_VIDEORESIZE;
 570         ev.resize.w = g_menuscreen_w;
 571         ev.resize.h = g_menuscreen_h;
 572         SDL_PeepEvents(&ev, 1, SDL_ADDEVENT, SDL_ALLEVENTS);
 573
 574         bgr_to_uyvy_init();
 575         linux_menu_init();
 576 }
 577
 578 void plat_finish(void)
 579 {
 580         free(shadow_fb);
 581         shadow_fb = NULL;
 582         free(g_menubg_ptr);
 583         g_menubg_ptr = NULL;
 584         plat_sdl_finish();
 585 }