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         int ret;
  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         ret = osdl_video_set_mode(pdata, width, height, bpp,
 126                 (flags & SDL_DOUBLEBUF) ? 1 : 0);
 127         if (ret < 0)
 128                 return NULL;
 129
 130         flags |= SDL_FULLSCREEN | SDL_HWSURFACE;
 131         unhandled_flags = flags & ~(SDL_FULLSCREEN | SDL_HWSURFACE | SDL_DOUBLEBUF);
 132         if (unhandled_flags != 0) {
 133                 log("dropping unhandled flags: %08x", unhandled_flags);
 134                 flags &= ~unhandled_flags;
 135         }
 136
 137         current->flags = flags;
 138         current->w = width;
 139         current->h = height;
 140         current->pitch = SDL_CalculatePitch(current);
 141
 142         if (pdata->layer_w != 0 && pdata->layer_h != 0) {
 143                 pdata->ts_xmul = (width  << 16) / pdata->layer_w;
 144                 pdata->ts_ymul = (height << 16) / pdata->layer_h;
 145         }
 146
 147         current->pixels = osdl_video_flip(pdata);
 148
 149         return current;
 150 }
 151
 152 static int omap_LockHWSurface(SDL_VideoDevice *this, SDL_Surface *surface)
 153 {
 154         trace("%p", surface);
 155
 156         return 0;
 157 }
 158
 159 static void omap_UnlockHWSurface(SDL_VideoDevice *this, SDL_Surface *surface)
 160 {
 161         trace("%p", surface);
 162 }
 163
 164 static int omap_FlipHWSurface(SDL_VideoDevice *this, SDL_Surface *surface)
 165 {
 166         trace("%p", surface);
 167
 168         surface->pixels = osdl_video_flip(this->hidden);
 169
 170         return 0;
 171 }
 172
 173 /* we can't do hw surfaces (besides screen one) yet */
 174 static int omap_AllocHWSurface(SDL_VideoDevice *this, SDL_Surface *surface)
 175 {
 176         trace("%p", surface);
 177         return -1;
 178 }
 179
 180 static void omap_FreeHWSurface(SDL_VideoDevice *this, SDL_Surface *surface)
 181 {
 182         trace("%p", surface);
 183 }
 184
 185 static int omap_SetColors(SDL_VideoDevice *this, int firstcolor, int ncolors, SDL_Color *colors)
 186 {
 187         trace("%d, %d, %p", firstcolor, ncolors, colors);
 188         return 0;
 189 }
 190
 191 static void omap_UpdateRects(SDL_VideoDevice *this, int nrects, SDL_Rect *rects)
 192 {
 193         trace("%d, %p", nrects, rects);
 194
 195         /* hmh.. */
 196         if (nrects == 1 && rects->x == 0 && rects->y == 0 &&
 197             (this->screen->flags & SDL_DOUBLEBUF) &&
 198             rects->w == this->screen->w && rects->h == this->screen->h)
 199         {
 200                 this->screen->pixels = osdl_video_flip(this->hidden);
 201         }
 202 }
 203
 204 static void omap_InitOSKeymap(SDL_VideoDevice *this)
 205 {
 206         trace();
 207 }
 208
 209 static int key_event_cb(void *cb_arg, int sdl_kc, int is_pressed)
 210 {
 211         SDL_keysym keysym = { 0, };
 212
 213         keysym.sym = sdl_kc;
 214         SDL_PrivateKeyboard(is_pressed, &keysym);
 215 }
 216
 217 /* clamp x to min..max-1 */
 218 #define clamp(x, min, max) \
 219         if (x < (min)) x = min; \
 220         if (x >= (max)) x = max
 221
 222 static int ts_event_cb(void *cb_arg, int x, int y, unsigned int pressure)
 223 {
 224         static int was_pressed;
 225         SDL_VideoDevice *this = cb_arg;
 226         struct SDL_PrivateVideoData *pdata = this->hidden;
 227         int xoffs;
 228
 229         if (!pdata->cfg_no_ts_translate && pdata->layer_w != 0 && pdata->layer_h != 0) {
 230                 x = (x - pdata->layer_x) * pdata->ts_xmul >> 16;
 231                 y = (y - pdata->layer_y) * pdata->ts_ymul >> 16;
 232                 clamp(x, 0, this->screen->w);
 233                 clamp(y, 0, this->screen->h);
 234         }
 235
 236         SDL_PrivateMouseMotion(0, 0, x, y);
 237
 238         pressure = !!pressure;
 239         if (pressure != was_pressed) {
 240                 SDL_PrivateMouseButton(pressure ? SDL_PRESSED : SDL_RELEASED, 1, 0, 0);
 241                 was_pressed = pressure;
 242         }
 243 }
 244
 245 static void omap_PumpEvents(SDL_VideoDevice *this)
 246 {
 247         struct SDL_PrivateVideoData *pdata = this->hidden;
 248         int dummy;
 249
 250         trace();
 251
 252         omapsdl_input_get_events(0, key_event_cb, ts_event_cb, this);
 253
 254         // XXX: we might want to process some X events too
 255         if (pdata->xenv_up)
 256                 xenv_update(&dummy);
 257 }
 258
 259 static SDL_VideoDevice *omap_create(int devindex)
 260 {
 261         SDL_VideoDevice *this;
 262
 263         this = calloc(1, sizeof(*this) + sizeof(*this->hidden));
 264         if (this == NULL) {
 265                 SDL_OutOfMemory();
 266                 return 0;
 267         }
 268         this->hidden = (void *)(this + 1);
 269         this->VideoInit = omap_VideoInit;
 270         this->ListModes = omap_ListModes;
 271         this->SetVideoMode = omap_SetVideoMode;
 272         this->LockHWSurface = omap_LockHWSurface;
 273         this->UnlockHWSurface = omap_UnlockHWSurface;
 274         this->FlipHWSurface = omap_FlipHWSurface;
 275         this->AllocHWSurface = omap_AllocHWSurface;
 276         this->FreeHWSurface = omap_FreeHWSurface;
 277         this->SetColors = omap_SetColors;
 278         this->UpdateRects = omap_UpdateRects;
 279         this->VideoQuit = omap_VideoQuit;
 280         this->InitOSKeymap = omap_InitOSKeymap;
 281         this->PumpEvents = omap_PumpEvents;
 282         this->free = omap_free;
 283
 284         return this;
 285 }
 286
 287 VideoBootStrap omapdss_bootstrap = {
 288         "omapdss", "OMAP DSS2 Framebuffer Driver",
 289         omap_available, omap_create
 290 };
 291