src/video/omapdss/sdlif.c

   1 /*
   2  * (C) Gražvydas "notaz" Ignotas, 2010-2012
   3  *
   4  * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
   5  * See the COPYING file in the top-level directory.
   6  */
   7
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <X11/XF86keysym.h>
  11
  12 #include "../SDL_sysvideo.h"
  13 #include "../SDL_pixels_c.h"
  14 #include "../../events/SDL_events_c.h"
  15
  16 #include "linux/xenv.h"
  17 #include "osdl.h"
  18
  19
  20 static int omap_available(void)
  21 {
  22         trace();
  23         return 1;
  24 }
  25
  26 static void omap_free(SDL_VideoDevice *device)
  27 {
  28         trace();
  29         free(device);
  30 }
  31
  32 static int omap_VideoInit(SDL_VideoDevice *this, SDL_PixelFormat *vformat)
  33 {
  34         const char *tmp;
  35         int w, h, ret;
  36
  37         trace();
  38
  39         // default to 16bpp
  40         vformat->BitsPerPixel = 16;
  41
  42         omapsdl_input_init();
  43         omapsdl_config(this->hidden);
  44
  45         tmp = getenv("SDL_OMAP_DEFAULT_MODE");
  46         if (tmp != NULL && sscanf(tmp, "%dx%d", &w, &h) == 2) {
  47                 this->info.current_w = w;
  48                 this->info.current_h = h;
  49         }
  50         else if (osdl_video_detect_screen(this->hidden) == 0) {
  51                 this->info.current_w = this->hidden->phys_w;
  52                 this->info.current_h = this->hidden->phys_h;
  53         }
  54
  55         this->handles_any_size = 1;
  56         this->info.hw_available = 1;
  57
  58         return 0;
  59 }
  60
  61 static void omap_VideoQuit(SDL_VideoDevice *this)
  62 {
  63         trace();
  64
  65         osdl_video_finish(this->hidden);
  66         this->screen->pixels = NULL;
  67         omapsdl_input_finish();
  68 }
  69
  70 static SDL_Rect **omap_ListModes(SDL_VideoDevice *this, SDL_PixelFormat *format, Uint32 flags)
  71 {
  72         static SDL_Rect omap_mode_max = {
  73                 /* with handles_any_size, should accept anything up to this
  74                  * XXX: possibly set this dynamically based on free vram? */
  75                 0, 0, 1600, 1200
  76         };
  77         /* broken API needs this stupidity */
  78         static SDL_Rect *omap_modes[] = {
  79                 &omap_mode_max,
  80                 NULL
  81         };
  82
  83         trace();
  84
  85         if (format->BitsPerPixel <= 8)
  86                 // not (yet?) supported
  87                 return NULL;
  88
  89         return omap_modes;
  90 }
  91
  92 static SDL_Surface *omap_SetVideoMode(SDL_VideoDevice *this, SDL_Surface *current, int width,
  93                                         int height, int bpp, Uint32 flags)
  94 {
  95         struct SDL_PrivateVideoData *pdata = this->hidden;
  96         SDL_PixelFormat *format;
  97         Uint32 unhandled_flags;
  98         int doublebuf;
  99         void *fbmem;
 100
 101         trace("%d, %d, %d, %08x", width, height, bpp, flags);
 102
 103         omapsdl_config_from_env(pdata);
 104
 105         switch (bpp) {
 106         case 16:
 107                 format = SDL_ReallocFormat(current, 16, 0xf800, 0x07e0, 0x001f, 0);
 108                 break;
 109         case 24:
 110                 format = SDL_ReallocFormat(current, 24, 0xff0000, 0xff00, 0xff, 0);
 111                 break;
 112         case 32:
 113                 format = SDL_ReallocFormat(current, 32, 0xff0000, 0xff00, 0xff, 0);
 114                 break;
 115         default:
 116                 err("SetVideoMode: bpp %d not supported", bpp);
 117                 return NULL;
 118         }
 119         if (format == NULL)
 120                 return NULL;
 121
 122         if (!(flags & SDL_DOUBLEBUF) && pdata->cfg_force_doublebuf) {
 123                 log("forcing SDL_DOUBLEBUF");
 124                 flags |= SDL_DOUBLEBUF;
 125         }
 126
 127         if (pdata->border_l | pdata->border_r | pdata->border_t | pdata->border_b) {
 128                 if (pdata->border_l + pdata->border_r >= width
 129                     || pdata->border_t + pdata->border_b >= height)
 130                 {
 131                         err("specified border too large, ignoring");
 132                         pdata->border_l = pdata->border_r = pdata->border_t = pdata->border_b = 0;
 133                 }
 134         }
 135
 136         doublebuf = (flags & SDL_DOUBLEBUF) ? 1 : 0;
 137         fbmem = osdl_video_set_mode(pdata,
 138                 pdata->border_l, pdata->border_r, pdata->border_t, pdata->border_b,
 139                 width, height, bpp, &doublebuf, this->wm_title);
 140         if (fbmem == NULL) {
 141                 err("failing on mode %dx%d@%d, doublebuf %s, border %d,%d,%d,%d",
 142                     width, height, bpp, (flags & SDL_DOUBLEBUF) ? "on" : "off",
 143                     pdata->border_l, pdata->border_r, pdata->border_t, pdata->border_b);
 144                 return NULL;
 145         }
 146         if ((flags & SDL_DOUBLEBUF) && !doublebuf) {
 147                 log("doublebuffering could not be set\n");
 148                 flags &= ~SDL_DOUBLEBUF;
 149         }
 150
 151         flags |= SDL_FULLSCREEN | SDL_HWSURFACE;
 152         unhandled_flags = flags & ~(SDL_FULLSCREEN | SDL_HWSURFACE | SDL_DOUBLEBUF);
 153         if (unhandled_flags != 0) {
 154                 log("dropping unhandled flags: %08x", unhandled_flags);
 155                 flags &= ~unhandled_flags;
 156         }
 157
 158         current->flags = flags;
 159         current->w = width;
 160         current->h = height;
 161         current->pitch = SDL_CalculatePitch(current);
 162         current->pixels = fbmem;
 163         pdata->app_uses_flip = 0;
 164
 165         if (pdata->layer_w != 0 && pdata->layer_h != 0) {
 166                 int v_width  = width  - (pdata->border_l + pdata->border_r);
 167                 int v_height = height - (pdata->border_t + pdata->border_b);
 168                 pdata->ts_xmul = (v_width  << 16) / pdata->layer_w;
 169                 pdata->ts_ymul = (v_height << 16) / pdata->layer_h;
 170         }
 171
 172         return current;
 173 }
 174
 175 static int omap_LockHWSurface(SDL_VideoDevice *this, SDL_Surface *surface)
 176 {
 177         trace("%p", surface);
 178
 179         return 0;
 180 }
 181
 182 static void omap_UnlockHWSurface(SDL_VideoDevice *this, SDL_Surface *surface)
 183 {
 184         trace("%p", surface);
 185 }
 186
 187 static int omap_FlipHWSurface(SDL_VideoDevice *this, SDL_Surface *surface)
 188 {
 189         struct SDL_PrivateVideoData *pdata = this->hidden;
 190
 191         trace("%p", surface);
 192
 193         surface->pixels = osdl_video_flip(pdata);
 194         pdata->app_uses_flip = 1;
 195
 196         return 0;
 197 }
 198
 199 /* we can't do hw surfaces (besides screen one) yet */
 200 static int omap_AllocHWSurface(SDL_VideoDevice *this, SDL_Surface *surface)
 201 {
 202         trace("%p", surface);
 203         return -1;
 204 }
 205
 206 static void omap_FreeHWSurface(SDL_VideoDevice *this, SDL_Surface *surface)
 207 {
 208         trace("%p", surface);
 209 }
 210
 211 static int omap_SetColors(SDL_VideoDevice *this, int firstcolor, int ncolors, SDL_Color *colors)
 212 {
 213         trace("%d, %d, %p", firstcolor, ncolors, colors);
 214         return 0;
 215 }
 216
 217 static void omap_UpdateRects(SDL_VideoDevice *this, int nrects, SDL_Rect *rects)
 218 {
 219         struct SDL_PrivateVideoData *pdata = this->hidden;
 220
 221         trace("%d, %p", nrects, rects);
 222
 223         /* for doublebuf forcing on apps */
 224         if (nrects == 1 && rects->x == 0 && rects->y == 0
 225             && !pdata->app_uses_flip && (this->screen->flags & SDL_DOUBLEBUF)
 226             && rects->w == this->screen->w && rects->h == this->screen->h)
 227         {
 228                 this->screen->pixels = osdl_video_flip(pdata);
 229         }
 230 }
 231
 232 static void omap_InitOSKeymap(SDL_VideoDevice *this)
 233 {
 234         trace();
 235 }
 236
 237 static int key_event_cb(void *cb_arg, int sdl_kc, int sdl_sc, int is_pressed)
 238 {
 239         SDL_keysym keysym = { 0, };
 240
 241         keysym.sym = sdl_kc;
 242         keysym.scancode = sdl_sc;
 243         SDL_PrivateKeyboard(is_pressed, &keysym);
 244 }
 245
 246 /* clamp x to min..max-1 */
 247 #define clamp(x, min, max) \
 248         if (x < (min)) x = min; \
 249         if (x >= (max)) x = max
 250
 251 static void translate_mouse(SDL_VideoDevice *this, int *x, int *y)
 252 {
 253         struct SDL_PrivateVideoData *pdata = this->hidden;
 254
 255         if (!pdata->cfg_no_ts_translate && pdata->layer_w != 0 && pdata->layer_h != 0) {
 256                 *x = pdata->border_l + ((*x - pdata->layer_x) * pdata->ts_xmul >> 16);
 257                 *y = pdata->border_t + ((*y - pdata->layer_y) * pdata->ts_ymul >> 16);
 258                 clamp(*x, 0, this->screen->w);
 259                 clamp(*y, 0, this->screen->h);
 260         }
 261 }
 262
 263 static int ts_event_cb(void *cb_arg, int x, int y, unsigned int pressure)
 264 {
 265         static int was_pressed;
 266         SDL_VideoDevice *this = cb_arg;
 267         struct SDL_PrivateVideoData *pdata = this->hidden;
 268
 269         translate_mouse(this, &x, &y);
 270
 271         pressure = !!pressure;
 272         if (pressure != was_pressed) {
 273                 SDL_PrivateMouseButton(pressure ? SDL_PRESSED : SDL_RELEASED, 1, x, y);
 274                 was_pressed = pressure;
 275         }
 276         else
 277                 SDL_PrivateMouseMotion(0, 0, x, y);
 278 }
 279
 280 static int xmouseb_event_cb(void *cb_arg, int x, int y, int button, int is_pressed)
 281 {
 282         SDL_VideoDevice *this = cb_arg;
 283         struct SDL_PrivateVideoData *pdata = this->hidden;
 284
 285         translate_mouse(this, &x, &y);
 286         SDL_PrivateMouseButton(is_pressed ? SDL_PRESSED : SDL_RELEASED, button, x, y);
 287 }
 288
 289 static int xmousem_event_cb(void *cb_arg, int x, int y)
 290 {
 291         SDL_VideoDevice *this = cb_arg;
 292         struct SDL_PrivateVideoData *pdata = this->hidden;
 293
 294         translate_mouse(this, &x, &y);
 295         SDL_PrivateMouseMotion(0, 0, x, y);
 296 }
 297
 298 static int xkey_cb(void *cb_arg, int kc, int is_pressed)
 299 {
 300         SDL_VideoDevice *this = cb_arg;
 301         struct SDL_PrivateVideoData *pdata = this->hidden;
 302         int ret;
 303
 304         if (kc == XF86XK_MenuKB && is_pressed) {
 305                 ret = osdl_video_pause(pdata, 1);
 306                 if (ret == 0) {
 307                         xenv_minimize();
 308                         osdl_video_pause(pdata, 0);
 309                         omapsdl_input_get_events(0, NULL, NULL, NULL);
 310                 }
 311         }
 312 }
 313
 314 static void omap_PumpEvents(SDL_VideoDevice *this)
 315 {
 316         struct SDL_PrivateVideoData *pdata = this->hidden;
 317         int read_tslib = 1;
 318
 319         trace();
 320
 321         if (pdata->xenv_up) {
 322                 if (!pdata->cfg_ts_force_tslib) {
 323                         xenv_update(xkey_cb, xmouseb_event_cb, xmousem_event_cb, this);
 324                         if (pdata->xenv_mouse)
 325                                 read_tslib = 0;
 326                 }
 327                 else {
 328                         /* just flush X event queue */
 329                         xenv_update(NULL, NULL, NULL, NULL);
 330                 }
 331         }
 332
 333         omapsdl_input_get_events(0, key_event_cb,
 334                 read_tslib ? ts_event_cb : NULL, this);
 335 }
 336
 337 static SDL_VideoDevice *omap_create(int devindex)
 338 {
 339         SDL_VideoDevice *this;
 340
 341         this = calloc(1, sizeof(*this) + sizeof(*this->hidden));
 342         if (this == NULL) {
 343                 SDL_OutOfMemory();
 344                 return 0;
 345         }
 346         this->hidden = (void *)(this + 1);
 347         this->VideoInit = omap_VideoInit;
 348         this->ListModes = omap_ListModes;
 349         this->SetVideoMode = omap_SetVideoMode;
 350         this->LockHWSurface = omap_LockHWSurface;
 351         this->UnlockHWSurface = omap_UnlockHWSurface;
 352         this->FlipHWSurface = omap_FlipHWSurface;
 353         this->AllocHWSurface = omap_AllocHWSurface;
 354         this->FreeHWSurface = omap_FreeHWSurface;
 355         this->SetColors = omap_SetColors;
 356         this->UpdateRects = omap_UpdateRects;
 357         this->VideoQuit = omap_VideoQuit;
 358         this->InitOSKeymap = omap_InitOSKeymap;
 359         this->PumpEvents = omap_PumpEvents;
 360         this->free = omap_free;
 361
 362         return this;
 363 }
 364
 365 VideoBootStrap omapdss_bootstrap = {
 366         "omapdss", "OMAP DSS2 Framebuffer Driver",
 367         omap_available, omap_create
 368 };
 369