| /* |
| SDL - Simple DirectMedia Layer |
| Copyright (C) 1997-2012 Sam Lantinga |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with this library; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| |
| Sam Lantinga |
| slouken@libsdl.org |
| */ |
| #include "SDL_config.h" |
| |
| /* GGI-based SDL video driver implementation. |
| */ |
| |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <sys/mman.h> |
| |
| #include <ggi/ggi.h> |
| #include <ggi/gii.h> |
| |
| #include "SDL_video.h" |
| #include "SDL_mouse.h" |
| #include "../SDL_sysvideo.h" |
| #include "../SDL_pixels_c.h" |
| #include "../../events/SDL_events_c.h" |
| #include "SDL_ggivideo.h" |
| #include "SDL_ggimouse_c.h" |
| #include "SDL_ggievents_c.h" |
| |
| |
| struct private_hwdata |
| { |
| ggi_visual_t vis; |
| }; |
| |
| ggi_visual_t VIS; |
| |
| /* Initialization/Query functions */ |
| static int GGI_VideoInit(_THIS, SDL_PixelFormat *vformat); |
| static SDL_Rect **GGI_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); |
| static SDL_Surface *GGI_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); |
| static int GGI_SetColors(_THIS, int firstcolor, int ncolors, |
| SDL_Color *colors); |
| static void GGI_VideoQuit(_THIS); |
| |
| /* Hardware surface functions */ |
| static int GGI_AllocHWSurface(_THIS, SDL_Surface *surface); |
| static int GGI_LockHWSurface(_THIS, SDL_Surface *surface); |
| static void GGI_UnlockHWSurface(_THIS, SDL_Surface *surface); |
| static void GGI_FreeHWSurface(_THIS, SDL_Surface *surface); |
| |
| /* GGI driver bootstrap functions */ |
| |
| static int GGI_Available(void) |
| { |
| ggi_visual_t *vis; |
| |
| vis = NULL; |
| if (ggiInit() == 0) { |
| vis = ggiOpen(NULL); |
| if (vis != NULL) { |
| ggiClose(vis); |
| } |
| } |
| return (vis != NULL); |
| } |
| |
| static void GGI_DeleteDevice(SDL_VideoDevice *device) |
| { |
| SDL_free(device->hidden); |
| SDL_free(device); |
| } |
| |
| static SDL_VideoDevice *GGI_CreateDevice(int devindex) |
| { |
| SDL_VideoDevice *device; |
| |
| /* Initialize all variables that we clean on shutdown */ |
| device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice)); |
| if ( device ) { |
| SDL_memset(device, 0, (sizeof *device)); |
| device->hidden = (struct SDL_PrivateVideoData *) |
| SDL_malloc((sizeof *device->hidden)); |
| } |
| if ( (device == NULL) || (device->hidden == NULL) ) { |
| SDL_OutOfMemory(); |
| if ( device ) { |
| SDL_free(device); |
| } |
| return(0); |
| } |
| SDL_memset(device->hidden, 0, (sizeof *device->hidden)); |
| |
| /* Set the function pointers */ |
| device->VideoInit = GGI_VideoInit; |
| device->ListModes = GGI_ListModes; |
| device->SetVideoMode = GGI_SetVideoMode; |
| device->SetColors = GGI_SetColors; |
| device->UpdateRects = NULL; |
| device->VideoQuit = GGI_VideoQuit; |
| device->AllocHWSurface = GGI_AllocHWSurface; |
| device->CheckHWBlit = NULL; |
| device->FillHWRect = NULL; |
| device->SetHWColorKey = NULL; |
| device->SetHWAlpha = NULL; |
| device->LockHWSurface = GGI_LockHWSurface; |
| device->UnlockHWSurface = GGI_UnlockHWSurface; |
| device->FlipHWSurface = NULL; |
| device->FreeHWSurface = GGI_FreeHWSurface; |
| device->SetCaption = NULL; |
| device->SetIcon = NULL; |
| device->IconifyWindow = NULL; |
| device->GrabInput = NULL; |
| device->GetWMInfo = NULL; |
| device->InitOSKeymap = GGI_InitOSKeymap; |
| device->PumpEvents = GGI_PumpEvents; |
| |
| device->free = GGI_DeleteDevice; |
| |
| return device; |
| } |
| |
| VideoBootStrap GGI_bootstrap = { |
| "ggi", "General Graphics Interface (GGI)", |
| GGI_Available, GGI_CreateDevice |
| }; |
| |
| |
| static SDL_Rect video_mode; |
| static SDL_Rect *SDL_modelist[4] = { NULL, NULL, NULL, NULL }; |
| |
| int GGI_VideoInit(_THIS, SDL_PixelFormat *vformat) |
| { |
| ggi_mode mode = |
| { |
| 1, |
| { GGI_AUTO, GGI_AUTO }, |
| { GGI_AUTO, GGI_AUTO }, |
| { 0, 0 }, |
| GT_AUTO, |
| { GGI_AUTO, GGI_AUTO } |
| }; |
| struct private_hwdata *priv; |
| ggi_color pal[256], map[256]; |
| const ggi_directbuffer *db; |
| int err, num_bufs; |
| ggi_pixel white, black; |
| |
| priv = SDL_malloc(sizeof(struct private_hwdata)); |
| if (priv == NULL) |
| { |
| SDL_SetError("Unhandled GGI mode type!\n"); |
| GGI_VideoQuit(NULL); |
| } |
| |
| if (ggiInit() != 0) |
| { |
| SDL_SetError("Unable to initialize GGI!\n"); |
| GGI_VideoQuit(NULL); |
| } |
| |
| VIS = ggiOpen(NULL); |
| if (VIS == NULL) |
| { |
| SDL_SetError("Unable to open default GGI visual!\n"); |
| ggiExit(); |
| GGI_VideoQuit(NULL); |
| } |
| |
| ggiSetFlags(VIS, GGIFLAG_ASYNC); |
| |
| /* Validate mode, autodetecting any GGI_AUTO or GT_AUTO fields */ |
| ggiCheckMode(VIS, &mode); |
| |
| /* At this point we should have a valid mode - try to set it */ |
| err = ggiSetMode(VIS, &mode); |
| |
| /* If we couldn't set _any_ modes, something is very wrong */ |
| if (err) |
| { |
| SDL_SetError("Can't set a mode!\n"); |
| ggiClose(VIS); |
| ggiExit(); |
| GGI_VideoQuit(NULL); |
| } |
| |
| /* Determine the current screen size */ |
| this->info.current_w = mode.virt.x; |
| this->info.current_h = mode.virt.y; |
| |
| /* Set a palette for palletized modes */ |
| if (GT_SCHEME(mode.graphtype) == GT_PALETTE) |
| { |
| ggiSetColorfulPalette(VIS); |
| ggiGetPalette(VIS, 0, 1 << vformat->BitsPerPixel, pal); |
| } |
| |
| /* Now we try to get the DirectBuffer info, which determines whether |
| * SDL can access hardware surfaces directly. */ |
| |
| num_bufs = ggiDBGetNumBuffers(VIS); |
| |
| if (num_bufs > 0) |
| { |
| db = ggiDBGetBuffer(VIS, 0); /* Only handle one DB for now */ |
| |
| vformat->BitsPerPixel = db->buffer.plb.pixelformat->depth; |
| |
| vformat->Rmask = db->buffer.plb.pixelformat->red_mask; |
| vformat->Gmask = db->buffer.plb.pixelformat->green_mask; |
| vformat->Bmask = db->buffer.plb.pixelformat->blue_mask; |
| |
| /* Fill in our hardware acceleration capabilities */ |
| |
| this->info.wm_available = 0; |
| this->info.hw_available = 1; |
| this->info.video_mem = db->buffer.plb.stride * mode.virt.y; |
| } |
| |
| video_mode.x = 0; |
| video_mode.y = 0; |
| video_mode.w = mode.virt.x; |
| video_mode.h = mode.virt.y; |
| SDL_modelist[((vformat->BitsPerPixel + 7) / 8) - 1] = &video_mode; |
| |
| /* We're done! */ |
| return(0); |
| } |
| |
| static SDL_Rect **GGI_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) |
| { |
| return(&SDL_modelist[((format->BitsPerPixel + 7) / 8) - 1]); |
| } |
| |
| /* Various screen update functions available */ |
| static void GGI_DirectUpdate(_THIS, int numrects, SDL_Rect *rects); |
| |
| SDL_Surface *GGI_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags) |
| { |
| ggi_mode mode = |
| { |
| 1, |
| { GGI_AUTO, GGI_AUTO }, |
| { GGI_AUTO, GGI_AUTO }, |
| { 0, 0 }, |
| GT_AUTO, |
| { GGI_AUTO, GGI_AUTO } |
| }; |
| const ggi_directbuffer *db; |
| ggi_color pal[256]; |
| int err; |
| |
| fprintf(stderr, "GGI_SetVideoMode()\n"); |
| |
| mode.visible.x = mode.virt.x = width; |
| mode.visible.y = mode.virt.y = height; |
| |
| /* Translate requested SDL bit depth into a GGI mode */ |
| switch (bpp) |
| { |
| case 1: mode.graphtype = GT_1BIT; break; |
| case 2: mode.graphtype = GT_2BIT; break; |
| case 4: mode.graphtype = GT_4BIT; break; |
| case 8: mode.graphtype = GT_8BIT; break; |
| case 15: mode.graphtype = GT_15BIT; break; |
| case 16: mode.graphtype = GT_16BIT; break; |
| case 24: mode.graphtype = GT_24BIT; break; |
| case 32: mode.graphtype = GT_32BIT; break; |
| default: |
| SDL_SetError("Unknown SDL bit depth, using GT_AUTO....\n"); |
| mode.graphtype = GT_AUTO; |
| } |
| |
| /* Validate mode, autodetecting any GGI_AUTO or GT_AUTO fields */ |
| ggiCheckMode(VIS, &mode); |
| |
| /* At this point we should have a valid mode - try to set it */ |
| err = ggiSetMode(VIS, &mode); |
| |
| /* If we couldn't set _any_ modes, something is very wrong */ |
| if (err) |
| { |
| SDL_SetError("Can't set a mode!\n"); |
| ggiClose(VIS); |
| ggiExit(); |
| GGI_VideoQuit(NULL); |
| } |
| |
| /* Set a palette for palletized modes */ |
| if (GT_SCHEME(mode.graphtype) == GT_PALETTE) |
| { |
| ggiSetColorfulPalette(VIS); |
| ggiGetPalette(VIS, 0, 1 << bpp, pal); |
| } |
| |
| db = ggiDBGetBuffer(VIS, 0); |
| |
| /* Set up the new mode framebuffer */ |
| current->flags = (SDL_FULLSCREEN | SDL_HWSURFACE); |
| current->w = mode.virt.x; |
| current->h = mode.virt.y; |
| current->pitch = db->buffer.plb.stride; |
| current->pixels = db->read; |
| |
| /* Set the blit function */ |
| this->UpdateRects = GGI_DirectUpdate; |
| |
| /* We're done */ |
| return(current); |
| } |
| |
| static int GGI_AllocHWSurface(_THIS, SDL_Surface *surface) |
| { |
| return(-1); |
| } |
| static void GGI_FreeHWSurface(_THIS, SDL_Surface *surface) |
| { |
| return; |
| } |
| static int GGI_LockHWSurface(_THIS, SDL_Surface *surface) |
| { |
| return(0); |
| } |
| static void GGI_UnlockHWSurface(_THIS, SDL_Surface *surface) |
| { |
| return; |
| } |
| |
| static void GGI_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) |
| { |
| int i; |
| |
| /* ggiFlush(VIS); */ |
| |
| for (i = 0; i < numrects; i++) |
| { |
| ggiFlushRegion(VIS, rects[i].x, rects[i].y, rects[i].w, rects[i].h); |
| } |
| return; |
| } |
| |
| int GGI_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) |
| { |
| int i; |
| ggi_color pal[256]; |
| |
| /* Set up the colormap */ |
| for (i = 0; i < ncolors; i++) |
| { |
| pal[i].r = (colors[i].r << 8) | colors[i].r; |
| pal[i].g = (colors[i].g << 8) | colors[i].g; |
| pal[i].b = (colors[i].b << 8) | colors[i].b; |
| } |
| |
| ggiSetPalette(VIS, firstcolor, ncolors, pal); |
| |
| return 1; |
| } |
| |
| void GGI_VideoQuit(_THIS) |
| { |
| } |
| void GGI_FinalQuit(void) |
| { |
| } |