diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/video/svga/SDL_svgavideo.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/video/svga/SDL_svgavideo.c | 584 |
1 files changed, 0 insertions, 584 deletions
diff --git a/distrib/sdl-1.2.12/src/video/svga/SDL_svgavideo.c b/distrib/sdl-1.2.12/src/video/svga/SDL_svgavideo.c deleted file mode 100644 index 53bad95..0000000 --- a/distrib/sdl-1.2.12/src/video/svga/SDL_svgavideo.c +++ /dev/null @@ -1,584 +0,0 @@ -/* - SDL - Simple DirectMedia Layer - Copyright (C) 1997-2006 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" - -/* SVGAlib based SDL video driver implementation. -*/ - -#include <unistd.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <sys/ioctl.h> -#include <fcntl.h> - -#if defined(__LINUX__) -#include <linux/vt.h> -#elif defined(__FREEBSD__) -#include <sys/consio.h> -#else -#error You must choose your operating system here -#endif -#include <vga.h> -#include <vgamouse.h> -#include <vgakeyboard.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_svgavideo.h" -#include "SDL_svgaevents_c.h" -#include "SDL_svgamouse_c.h" - -/* Initialization/Query functions */ -static int SVGA_VideoInit(_THIS, SDL_PixelFormat *vformat); -static SDL_Rect **SVGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); -static SDL_Surface *SVGA_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); -static int SVGA_SetColors(_THIS, int firstcolor, int ncolors, - SDL_Color *colors); -static void SVGA_VideoQuit(_THIS); - -/* Hardware surface functions */ -static int SVGA_AllocHWSurface(_THIS, SDL_Surface *surface); -static int SVGA_LockHWSurface(_THIS, SDL_Surface *surface); -static int SVGA_FlipHWSurface(_THIS, SDL_Surface *surface); -static void SVGA_UnlockHWSurface(_THIS, SDL_Surface *surface); -static void SVGA_FreeHWSurface(_THIS, SDL_Surface *surface); - -/* SVGAlib driver bootstrap functions */ - -static int SVGA_Available(void) -{ - /* Check to see if we are root and stdin is a virtual console */ - int console; - - /* SVGALib 1.9.x+ doesn't require root (via /dev/svga) */ - int svgalib2 = -1; - - /* See if we are connected to a virtual terminal */ - console = STDIN_FILENO; -#if 0 /* This is no longer needed, SVGAlib can switch consoles for us */ - if ( console >= 0 ) { - struct stat sb; - struct vt_mode dummy; - - if ( (fstat(console, &sb) < 0) || - (ioctl(console, VT_GETMODE, &dummy) < 0) ) { - console = -1; - } - } -#endif /* 0 */ - - /* See if SVGAlib 2.0 is available */ - svgalib2 = open("/dev/svga", O_RDONLY); - if (svgalib2 != -1) { - close(svgalib2); - } - - return(((svgalib2 != -1) || (geteuid() == 0)) && (console >= 0)); -} - -static void SVGA_DeleteDevice(SDL_VideoDevice *device) -{ - SDL_free(device->hidden); - SDL_free(device); -} - -static SDL_VideoDevice *SVGA_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 = SVGA_VideoInit; - device->ListModes = SVGA_ListModes; - device->SetVideoMode = SVGA_SetVideoMode; - device->SetColors = SVGA_SetColors; - device->UpdateRects = NULL; - device->VideoQuit = SVGA_VideoQuit; - device->AllocHWSurface = SVGA_AllocHWSurface; - device->CheckHWBlit = NULL; - device->FillHWRect = NULL; - device->SetHWColorKey = NULL; - device->SetHWAlpha = NULL; - device->LockHWSurface = SVGA_LockHWSurface; - device->UnlockHWSurface = SVGA_UnlockHWSurface; - device->FlipHWSurface = SVGA_FlipHWSurface; - device->FreeHWSurface = SVGA_FreeHWSurface; - device->SetCaption = NULL; - device->SetIcon = NULL; - device->IconifyWindow = NULL; - device->GrabInput = NULL; - device->GetWMInfo = NULL; - device->InitOSKeymap = SVGA_InitOSKeymap; - device->PumpEvents = SVGA_PumpEvents; - - device->free = SVGA_DeleteDevice; - - return device; -} - -VideoBootStrap SVGALIB_bootstrap = { - "svgalib", "SVGAlib", - SVGA_Available, SVGA_CreateDevice -}; - -static int SVGA_AddMode(_THIS, int mode, int actually_add) -{ - int i, j; - vga_modeinfo *modeinfo; - - modeinfo = vga_getmodeinfo(mode); - - i = modeinfo->bytesperpixel-1; - if ( i < 0 ) { - return 0; - } - if ( actually_add ) { - SDL_Rect saved_rect[2]; - int saved_mode[2]; - int b; - - /* Add the mode, sorted largest to smallest */ - b = 0; - j = 0; - while ( (SDL_modelist[i][j]->w > modeinfo->width) || - (SDL_modelist[i][j]->h > modeinfo->height) ) { - ++j; - } - /* Skip modes that are already in our list */ - if ( (SDL_modelist[i][j]->w == modeinfo->width) && - (SDL_modelist[i][j]->h == modeinfo->height) ) { - return(0); - } - /* Insert the new mode */ - saved_rect[b] = *SDL_modelist[i][j]; - saved_mode[b] = SDL_vgamode[i][j]; - SDL_modelist[i][j]->w = modeinfo->width; - SDL_modelist[i][j]->h = modeinfo->height; - SDL_vgamode[i][j] = mode; - /* Everybody scoot down! */ - if ( saved_rect[b].w && saved_rect[b].h ) { - for ( ++j; SDL_modelist[i][j]->w; ++j ) { - saved_rect[!b] = *SDL_modelist[i][j]; - saved_mode[!b] = SDL_vgamode[i][j]; - *SDL_modelist[i][j] = saved_rect[b]; - SDL_vgamode[i][j] = saved_mode[b]; - b = !b; - } - *SDL_modelist[i][j] = saved_rect[b]; - SDL_vgamode[i][j] = saved_mode[b]; - } - } else { - ++SDL_nummodes[i]; - } - return(1); -} - -static void SVGA_UpdateVideoInfo(_THIS) -{ - vga_modeinfo *modeinfo; - - this->info.wm_available = 0; - this->info.hw_available = (banked ? 0 : 1); - modeinfo = vga_getmodeinfo(vga_getcurrentmode()); - this->info.video_mem = modeinfo->memory; - /* FIXME: Add hardware accelerated blit information */ -#ifdef SVGALIB_DEBUG - printf("Hardware accelerated blit: %savailable\n", modeinfo->haveblit ? "" : "not "); -#endif -} - -int SVGA_VideoInit(_THIS, SDL_PixelFormat *vformat) -{ - int keyboard; - int i, j; - int mode, total_modes; - - /* Initialize all variables that we clean on shutdown */ - for ( i=0; i<NUM_MODELISTS; ++i ) { - SDL_nummodes[i] = 0; - SDL_modelist[i] = NULL; - SDL_vgamode[i] = NULL; - } - - /* Initialize the library */ - vga_disabledriverreport(); - if ( vga_init() < 0 ) { - SDL_SetError("Unable to initialize SVGAlib"); - return(-1); - } - vga_setmode(TEXT); - - /* Enable mouse and keyboard support */ - vga_setmousesupport(1); - keyboard = keyboard_init_return_fd(); - if ( keyboard < 0 ) { - SDL_SetError("Unable to initialize keyboard"); - return(-1); - } - if ( SVGA_initkeymaps(keyboard) < 0 ) { - return(-1); - } - keyboard_seteventhandler(SVGA_keyboardcallback); - - /* Determine the current screen size */ - this->info.current_w = 0; - this->info.current_h = 0; - - /* Determine the screen depth (use default 8-bit depth) */ - vformat->BitsPerPixel = 8; - - /* Enumerate the available fullscreen modes */ - total_modes = 0; - for ( mode=vga_lastmodenumber(); mode; --mode ) { - if ( vga_hasmode(mode) ) { - if ( SVGA_AddMode(this, mode, 0) ) { - ++total_modes; - } - } - } - if ( SVGA_AddMode(this, G320x200x256, 0) ) ++total_modes; - if ( total_modes == 0 ) { - SDL_SetError("No linear video modes available"); - return(-1); - } - for ( i=0; i<NUM_MODELISTS; ++i ) { - SDL_vgamode[i] = (int *)SDL_malloc(SDL_nummodes[i]*sizeof(int)); - if ( SDL_vgamode[i] == NULL ) { - SDL_OutOfMemory(); - return(-1); - } - SDL_modelist[i] = (SDL_Rect **) - SDL_malloc((SDL_nummodes[i]+1)*sizeof(SDL_Rect *)); - if ( SDL_modelist[i] == NULL ) { - SDL_OutOfMemory(); - return(-1); - } - for ( j=0; j<SDL_nummodes[i]; ++j ) { - SDL_modelist[i][j]=(SDL_Rect *)SDL_malloc(sizeof(SDL_Rect)); - if ( SDL_modelist[i][j] == NULL ) { - SDL_OutOfMemory(); - return(-1); - } - SDL_memset(SDL_modelist[i][j], 0, sizeof(SDL_Rect)); - } - SDL_modelist[i][j] = NULL; - } - for ( mode=vga_lastmodenumber(); mode; --mode ) { - if ( vga_hasmode(mode) ) { - SVGA_AddMode(this, mode, 1); - } - } - SVGA_AddMode(this, G320x200x256, 1); - - /* Free extra (duplicated) modes */ - for ( i=0; i<NUM_MODELISTS; ++i ) { - j = 0; - while ( SDL_modelist[i][j] && SDL_modelist[i][j]->w ) { - j++; - } - while ( SDL_modelist[i][j] ) { - SDL_free(SDL_modelist[i][j]); - SDL_modelist[i][j] = NULL; - j++; - } - } - - /* Fill in our hardware acceleration capabilities */ - SVGA_UpdateVideoInfo(this); - - /* We're done! */ - return(0); -} - -SDL_Rect **SVGA_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) -{ - return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]); -} - -/* Various screen update functions available */ -static void SVGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects); -static void SVGA_BankedUpdate(_THIS, int numrects, SDL_Rect *rects); - -SDL_Surface *SVGA_SetVideoMode(_THIS, SDL_Surface *current, - int width, int height, int bpp, Uint32 flags) -{ - int mode; - int vgamode; - vga_modeinfo *modeinfo; - int screenpage_len; - - /* Free old pixels if we were in banked mode */ - if ( banked && current->pixels ) { - free(current->pixels); - current->pixels = NULL; - } - - /* Try to set the requested linear video mode */ - bpp = (bpp+7)/8-1; - for ( mode=0; SDL_modelist[bpp][mode]; ++mode ) { - if ( (SDL_modelist[bpp][mode]->w == width) && - (SDL_modelist[bpp][mode]->h == height) ) { - break; - } - } - if ( SDL_modelist[bpp][mode] == NULL ) { - SDL_SetError("Couldn't find requested mode in list"); - return(NULL); - } - vgamode = SDL_vgamode[bpp][mode]; - vga_setmode(vgamode); - vga_setpage(0); - - if ( (vga_setlinearaddressing() < 0) && (vgamode != G320x200x256) ) { - banked = 1; - } else { - banked = 0; - } - - modeinfo = vga_getmodeinfo(SDL_vgamode[bpp][mode]); - - /* Update hardware acceleration info */ - SVGA_UpdateVideoInfo(this); - - /* Allocate the new pixel format for the screen */ - bpp = (bpp+1)*8; - if ( (bpp == 16) && (modeinfo->colors == 32768) ) { - bpp = 15; - } - if ( ! SDL_ReallocFormat(current, bpp, 0, 0, 0, 0) ) { - return(NULL); - } - - /* Set up the new mode framebuffer */ - current->flags = SDL_FULLSCREEN; - if ( !banked ) { - current->flags |= SDL_HWSURFACE; - } - if ( bpp == 8 ) { - /* FIXME: What about DirectColor? */ - current->flags |= SDL_HWPALETTE; - } - current->w = width; - current->h = height; - current->pitch = modeinfo->linewidth; - if ( banked ) { - current->pixels = SDL_malloc(current->h * current->pitch); - if ( !current->pixels ) { - SDL_OutOfMemory(); - return(NULL); - } - } else { - current->pixels = vga_getgraphmem(); - } - - /* set double-buffering */ - if ( (flags & SDL_DOUBLEBUF) && !banked ) - { - /* length of one screen page in bytes */ - screenpage_len=current->h*modeinfo->linewidth; - - /* if start address should be aligned */ - if ( modeinfo->linewidth_unit ) - { - if ( screenpage_len % modeinfo->linewidth_unit ) - { - screenpage_len += modeinfo->linewidth_unit - ( screenpage_len % modeinfo->linewidth_unit ); - } - } - - /* if we heve enough videomemory = ak je dost videopamete */ - if ( modeinfo->memory > ( screenpage_len * 2 / 1024 ) ) - { - current->flags |= SDL_DOUBLEBUF; - flip_page = 0; - flip_offset[0] = 0; - flip_offset[1] = screenpage_len; - flip_address[0] = vga_getgraphmem(); - flip_address[1] = flip_address[0]+screenpage_len; - SVGA_FlipHWSurface(this,current); - } - } - - /* Set the blit function */ - if ( banked ) { - this->UpdateRects = SVGA_BankedUpdate; - } else { - this->UpdateRects = SVGA_DirectUpdate; - } - - /* Set up the mouse handler again (buggy SVGAlib 1.40) */ - mouse_seteventhandler(SVGA_mousecallback); - - /* We're done */ - return(current); -} - -/* We don't actually allow hardware surfaces other than the main one */ -static int SVGA_AllocHWSurface(_THIS, SDL_Surface *surface) -{ - return(-1); -} -static void SVGA_FreeHWSurface(_THIS, SDL_Surface *surface) -{ - return; -} - -/* We need to wait for vertical retrace on page flipped displays */ -static int SVGA_LockHWSurface(_THIS, SDL_Surface *surface) -{ - /* The waiting is done in SVGA_FlipHWSurface() */ - return(0); -} -static void SVGA_UnlockHWSurface(_THIS, SDL_Surface *surface) -{ - return; -} - -static int SVGA_FlipHWSurface(_THIS, SDL_Surface *surface) -{ - if ( !banked ) { - vga_setdisplaystart(flip_offset[flip_page]); - flip_page=!flip_page; - surface->pixels=flip_address[flip_page]; - vga_waitretrace(); - } - return(0); -} - -static void SVGA_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) -{ - return; -} - -static void SVGA_BankedUpdate(_THIS, int numrects, SDL_Rect *rects) -{ - int i, j; - SDL_Rect *rect; - int page, vp; - int x, y, w, h; - unsigned char *src; - unsigned char *dst; - int bpp = this->screen->format->BytesPerPixel; - int pitch = this->screen->pitch; - - dst = vga_getgraphmem(); - for ( i=0; i < numrects; ++i ) { - rect = &rects[i]; - x = rect->x; - y = rect->y; - w = rect->w * bpp; - h = rect->h; - - vp = y * pitch + x * bpp; - src = (unsigned char *)this->screen->pixels + vp; - page = vp >> 16; - vp &= 0xffff; - vga_setpage(page); - for (j = 0; j < h; j++) { - if (vp + w > 0x10000) { - if (vp >= 0x10000) { - page++; - vga_setpage(page); - vp &= 0xffff; - } else { - SDL_memcpy(dst + vp, src, 0x10000 - vp); - page++; - vga_setpage(page); - SDL_memcpy(dst, src + 0x10000 - vp, - (vp + w) & 0xffff); - vp = (vp + pitch) & 0xffff; - src += pitch; - continue; - } - } - SDL_memcpy(dst + vp, src, w); - src += pitch; - vp += pitch; - } - } -} - -int SVGA_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) -{ - int i; - - for(i = 0; i < ncolors; i++) { - vga_setpalette(firstcolor + i, - colors[i].r>>2, - colors[i].g>>2, - colors[i].b>>2); - } - return(1); -} - -/* Note: If we are terminated, this could be called in the middle of - another SDL video routine -- notably UpdateRects. -*/ -void SVGA_VideoQuit(_THIS) -{ - int i, j; - - /* Reset the console video mode */ - if ( this->screen && (this->screen->w && this->screen->h) ) { - vga_setmode(TEXT); - } - keyboard_close(); - - /* Free video mode lists */ - for ( i=0; i<NUM_MODELISTS; ++i ) { - if ( SDL_modelist[i] != NULL ) { - for ( j=0; SDL_modelist[i][j]; ++j ) - SDL_free(SDL_modelist[i][j]); - SDL_free(SDL_modelist[i]); - SDL_modelist[i] = NULL; - } - if ( SDL_vgamode[i] != NULL ) { - SDL_free(SDL_vgamode[i]); - SDL_vgamode[i] = NULL; - } - } - if ( this->screen ) { - if ( banked && this->screen->pixels ) { - SDL_free(this->screen->pixels); - } - this->screen->pixels = NULL; - } -} - |