src/video/omapdss/sdlif.c

   1 /*
   2  * (C) Gražvydas "notaz" Ignotas, 2010
   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         void *fbmem;
  98
  99         trace("%d, %d, %d, %08x", width, height, bpp, flags);
 100
 101         omapsdl_config_from_env(pdata);
 102
 103         switch (bpp) {
 104         case 16:
 105                 format = SDL_ReallocFormat(current, 16, 0xf800, 0x07e0, 0x001f, 0);
 106                 break;
 107         case 24:
 108                 format = SDL_ReallocFormat(current, 24, 0xff0000, 0xff00, 0xff, 0);
 109                 break;
 110         case 32:
 111                 format = SDL_ReallocFormat(current, 32, 0xff0000, 0xff00, 0xff, 0xff000000);
 112                 break;
 113         default:
 114                 err("SetVideoMode: bpp %d not supported", bpp);
 115                 return NULL;
 116         }
 117         if (format == NULL)
 118                 return NULL;
 119
 120         if (!(flags & SDL_DOUBLEBUF) && pdata->cfg_force_doublebuf) {
 121                 log("forcing SDL_DOUBLEBUF");
 122                 flags |= SDL_DOUBLEBUF;
 123         }
 124
 125         if (pdata->border_l | pdata->border_r | pdata->border_t | pdata->border_b) {
 126                 if (pdata->border_l + pdata->border_r >= width
 127                     || pdata->border_t + pdata->border_b >= height)
 128                 {
 129                         err("specified border too large, ignoring");
 130                         pdata->border_l = pdata->border_r = pdata->border_t = pdata->border_b = 0;
 131                 }
 132         }
 133
 134         fbmem = osdl_video_set_mode(pdata,
 135                 pdata->border_l, pdata->border_r, pdata->border_t, pdata->border_b,
 136                 width, height, bpp, (flags & SDL_DOUBLEBUF) ? 1 : 0);
 137         if (fbmem == NULL) {
 138                 log("failing on mode %dx%d@%d, doublebuf %s",
 139                     width, height, bpp, (flags & SDL_DOUBLEBUF) ? "on" : "off");
 140                 return NULL;
 141         }
 142
 143         flags |= SDL_FULLSCREEN | SDL_HWSURFACE;
 144         unhandled_flags = flags & ~(SDL_FULLSCREEN | SDL_HWSURFACE | SDL_DOUBLEBUF);
 145         if (unhandled_flags != 0) {
 146                 log("dropping unhandled flags: %08x", unhandled_flags);
 147                 flags &= ~unhandled_flags;
 148         }
 149
 150         current->flags = flags;
 151         current->w = width;
 152         current->h = height;
 153         current->pitch = SDL_CalculatePitch(current);
 154         current->pixels = fbmem;
 155         pdata->app_uses_flip = 0;
 156
 157         if (pdata->layer_w != 0 && pdata->layer_h != 0) {
 158                 int v_width  = width  - (pdata->border_l + pdata->border_r);
 159                 int v_height = height - (pdata->border_t + pdata->border_b);
 160                 pdata->ts_xmul = (v_width  << 16) / pdata->layer_w;
 161                 pdata->ts_ymul = (v_height << 16) / pdata->layer_h;
 162         }
 163
 164         return current;
 165 }
 166
 167 static int omap_LockHWSurface(SDL_VideoDevice *this, SDL_Surface *surface)
 168 {
 169         trace("%p", surface);
 170
 171         return 0;
 172 }
 173
 174 static void omap_UnlockHWSurface(SDL_VideoDevice *this, SDL_Surface *surface)
 175 {
 176         trace("%p", surface);
 177 }
 178
 179 static int omap_FlipHWSurface(SDL_VideoDevice *this, SDL_Surface *surface)
 180 {
 181         struct SDL_PrivateVideoData *pdata = this->hidden;
 182
 183         trace("%p", surface);
 184
 185         surface->pixels = osdl_video_flip(pdata);
 186         pdata->app_uses_flip = 1;
 187
 188         return 0;
 189 }
 190
 191 /* we can't do hw surfaces (besides screen one) yet */
 192 static int omap_AllocHWSurface(SDL_VideoDevice *this, SDL_Surface *surface)
 193 {
 194         trace("%p", surface);
 195         return -1;
 196 }
 197
 198 static void omap_FreeHWSurface(SDL_VideoDevice *this, SDL_Surface *surface)
 199 {
 200         trace("%p", surface);
 201 }
 202
 203 static int omap_SetColors(SDL_VideoDevice *this, int firstcolor, int ncolors, SDL_Color *colors)
 204 {
 205         trace("%d, %d, %p", firstcolor, ncolors, colors);
 206         return 0;
 207 }
 208
 209 static void omap_UpdateRects(SDL_VideoDevice *this, int nrects, SDL_Rect *rects)
 210 {
 211         struct SDL_PrivateVideoData *pdata = this->hidden;
 212
 213         trace("%d, %p", nrects, rects);
 214
 215         /* for doublebuf forcing on apps */
 216         if (nrects == 1 && rects->x == 0 && rects->y == 0
 217             && !pdata->app_uses_flip && (this->screen->flags & SDL_DOUBLEBUF)
 218             && rects->w == this->screen->w && rects->h == this->screen->h)
 219         {
 220                 this->screen->pixels = osdl_video_flip(pdata);
 221         }
 222 }
 223
 224 static void omap_InitOSKeymap(SDL_VideoDevice *this)
 225 {
 226         trace();
 227 }
 228
 229 static int key_event_cb(void *cb_arg, int sdl_kc, int is_pressed)
 230 {
 231         SDL_keysym keysym = { 0, };
 232
 233         keysym.sym = sdl_kc;
 234         SDL_PrivateKeyboard(is_pressed, &keysym);
 235 }
 236
 237 /* clamp x to min..max-1 */
 238 #define clamp(x, min, max) \
 239         if (x < (min)) x = min; \
 240         if (x >= (max)) x = max
 241
 242 static int ts_event_cb(void *cb_arg, int x, int y, unsigned int pressure)
 243 {
 244         static int was_pressed;
 245         SDL_VideoDevice *this = cb_arg;
 246         struct SDL_PrivateVideoData *pdata = this->hidden;
 247         int xoffs;
 248
 249         if (!pdata->cfg_no_ts_translate && pdata->layer_w != 0 && pdata->layer_h != 0) {
 250                 x = pdata->border_l + ((x - pdata->layer_x) * pdata->ts_xmul >> 16);
 251                 y = pdata->border_t + ((y - pdata->layer_y) * pdata->ts_ymul >> 16);
 252                 clamp(x, 0, this->screen->w);
 253                 clamp(y, 0, this->screen->h);
 254         }
 255
 256         SDL_PrivateMouseMotion(0, 0, x, y);
 257
 258         pressure = !!pressure;
 259         if (pressure != was_pressed) {
 260                 SDL_PrivateMouseButton(pressure ? SDL_PRESSED : SDL_RELEASED, 1, 0, 0);
 261                 was_pressed = pressure;
 262         }
 263 }
 264
 265 static void omap_PumpEvents(SDL_VideoDevice *this)
 266 {
 267         struct SDL_PrivateVideoData *pdata = this->hidden;
 268         int dummy;
 269
 270         trace();
 271
 272         omapsdl_input_get_events(0, key_event_cb, ts_event_cb, this);
 273
 274         // XXX: we might want to process some X events too
 275         if (pdata->xenv_up)
 276                 xenv_update(&dummy);
 277 }
 278
 279 static SDL_VideoDevice *omap_create(int devindex)
 280 {
 281         SDL_VideoDevice *this;
 282
 283         this = calloc(1, sizeof(*this) + sizeof(*this->hidden));
 284         if (this == NULL) {
 285                 SDL_OutOfMemory();
 286                 return 0;
 287         }
 288         this->hidden = (void *)(this + 1);
 289         this->VideoInit = omap_VideoInit;
 290         this->ListModes = omap_ListModes;
 291         this->SetVideoMode = omap_SetVideoMode;
 292         this->LockHWSurface = omap_LockHWSurface;
 293         this->UnlockHWSurface = omap_UnlockHWSurface;
 294         this->FlipHWSurface = omap_FlipHWSurface;
 295         this->AllocHWSurface = omap_AllocHWSurface;
 296         this->FreeHWSurface = omap_FreeHWSurface;
 297         this->SetColors = omap_SetColors;
 298         this->UpdateRects = omap_UpdateRects;
 299         this->VideoQuit = omap_VideoQuit;
 300         this->InitOSKeymap = omap_InitOSKeymap;
 301         this->PumpEvents = omap_PumpEvents;
 302         this->free = omap_free;
 303
 304         return this;
 305 }
 306
 307 VideoBootStrap omapdss_bootstrap = {
 308         "omapdss", "OMAP DSS2 Framebuffer Driver",
 309         omap_available, omap_create
 310 };
 311