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