| /* |
| 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" |
| |
| /* Framebuffer console based SDL video driver implementation. |
| */ |
| |
| #include <stdio.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <sys/ioctl.h> |
| #include <sys/mman.h> |
| |
| #ifndef HAVE_GETPAGESIZE |
| #include <asm/page.h> /* For definition of PAGE_SIZE */ |
| #endif |
| |
| #include <linux/vt.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_fbvideo.h" |
| #include "SDL_fbmouse_c.h" |
| #include "SDL_fbevents_c.h" |
| #include "SDL_fb3dfx.h" |
| #include "SDL_fbmatrox.h" |
| #include "SDL_fbriva.h" |
| |
| /*#define FBCON_DEBUG*/ |
| |
| #if defined(i386) && defined(FB_TYPE_VGA_PLANES) |
| #define VGA16_FBCON_SUPPORT |
| #include <sys/io.h> /* For ioperm() */ |
| #ifndef FB_AUX_VGA_PLANES_VGA4 |
| #define FB_AUX_VGA_PLANES_VGA4 0 |
| #endif |
| /* |
| static inline void outb (unsigned char value, unsigned short port) |
| { |
| __asm__ __volatile__ ("outb %b0,%w1"::"a" (value), "Nd" (port)); |
| } |
| */ |
| #endif /* FB_TYPE_VGA_PLANES */ |
| |
| /* A list of video resolutions that we query for (sorted largest to smallest) */ |
| static const SDL_Rect checkres[] = { |
| { 0, 0, 1600, 1200 }, /* 16 bpp: 0x11E, or 286 */ |
| { 0, 0, 1408, 1056 }, /* 16 bpp: 0x19A, or 410 */ |
| { 0, 0, 1280, 1024 }, /* 16 bpp: 0x11A, or 282 */ |
| { 0, 0, 1152, 864 }, /* 16 bpp: 0x192, or 402 */ |
| { 0, 0, 1024, 768 }, /* 16 bpp: 0x117, or 279 */ |
| { 0, 0, 960, 720 }, /* 16 bpp: 0x18A, or 394 */ |
| { 0, 0, 800, 600 }, /* 16 bpp: 0x114, or 276 */ |
| { 0, 0, 768, 576 }, /* 16 bpp: 0x182, or 386 */ |
| { 0, 0, 720, 576 }, /* PAL */ |
| { 0, 0, 720, 480 }, /* NTSC */ |
| { 0, 0, 640, 480 }, /* 16 bpp: 0x111, or 273 */ |
| { 0, 0, 640, 400 }, /* 8 bpp: 0x100, or 256 */ |
| { 0, 0, 512, 384 }, |
| { 0, 0, 320, 240 }, |
| { 0, 0, 320, 200 } |
| }; |
| static const struct { |
| int xres; |
| int yres; |
| int pixclock; |
| int left; |
| int right; |
| int upper; |
| int lower; |
| int hslen; |
| int vslen; |
| int sync; |
| int vmode; |
| } vesa_timings[] = { |
| #ifdef USE_VESA_TIMINGS /* Only tested on Matrox Millenium I */ |
| { 640, 400, 39771, 48, 16, 39, 8, 96, 2, 2, 0 }, /* 70 Hz */ |
| { 640, 480, 39683, 48, 16, 33, 10, 96, 2, 0, 0 }, /* 60 Hz */ |
| { 768, 576, 26101, 144, 16, 28, 6, 112, 4, 0, 0 }, /* 60 Hz */ |
| { 800, 600, 24038, 144, 24, 28, 8, 112, 6, 0, 0 }, /* 60 Hz */ |
| { 960, 720, 17686, 144, 24, 28, 8, 112, 4, 0, 0 }, /* 60 Hz */ |
| { 1024, 768, 15386, 160, 32, 30, 4, 128, 4, 0, 0 }, /* 60 Hz */ |
| { 1152, 864, 12286, 192, 32, 30, 4, 128, 4, 0, 0 }, /* 60 Hz */ |
| { 1280, 1024, 9369, 224, 32, 32, 4, 136, 4, 0, 0 }, /* 60 Hz */ |
| { 1408, 1056, 8214, 256, 40, 32, 5, 144, 5, 0, 0 }, /* 60 Hz */ |
| { 1600, 1200,/*?*/0, 272, 48, 32, 5, 152, 5, 0, 0 }, /* 60 Hz */ |
| #else |
| /* You can generate these timings from your XF86Config file using |
| the 'modeline2fb' perl script included with the fbset package. |
| These timings were generated for Matrox Millenium I, 15" monitor. |
| */ |
| { 320, 200, 79440, 16, 16, 20, 4, 48, 1, 0, 2 }, /* 70 Hz */ |
| { 320, 240, 63492, 16, 16, 16, 4, 48, 2, 0, 2 }, /* 72 Hz */ |
| { 512, 384, 49603, 48, 16, 16, 1, 64, 3, 0, 0 }, /* 78 Hz */ |
| { 640, 400, 31746, 96, 32, 41, 1, 64, 3, 2, 0 }, /* 85 Hz */ |
| { 640, 480, 31746, 120, 16, 16, 1, 64, 3, 0, 0 }, /* 75 Hz */ |
| { 768, 576, 26101, 144, 16, 28, 6, 112, 4, 0, 0 }, /* 60 Hz */ |
| { 800, 600, 20000, 64, 56, 23, 37, 120, 6, 3, 0 }, /* 72 Hz */ |
| { 960, 720, 17686, 144, 24, 28, 8, 112, 4, 0, 0 }, /* 60 Hz */ |
| { 1024, 768, 13333, 144, 24, 29, 3, 136, 6, 0, 0 }, /* 70 Hz */ |
| { 1152, 864, 12286, 192, 32, 30, 4, 128, 4, 0, 0 }, /* 60 Hz */ |
| { 1280, 1024, 9369, 224, 32, 32, 4, 136, 4, 0, 0 }, /* 60 Hz */ |
| { 1408, 1056, 8214, 256, 40, 32, 5, 144, 5, 0, 0 }, /* 60 Hz */ |
| { 1600, 1200,/*?*/0, 272, 48, 32, 5, 152, 5, 0, 0 }, /* 60 Hz */ |
| #endif |
| }; |
| enum { |
| FBCON_ROTATE_NONE = 0, |
| FBCON_ROTATE_CCW = 90, |
| FBCON_ROTATE_UD = 180, |
| FBCON_ROTATE_CW = 270 |
| }; |
| |
| #define min(a,b) ((a)<(b)?(a):(b)) |
| |
| /* Initialization/Query functions */ |
| static int FB_VideoInit(_THIS, SDL_PixelFormat *vformat); |
| static SDL_Rect **FB_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); |
| static SDL_Surface *FB_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); |
| #ifdef VGA16_FBCON_SUPPORT |
| static SDL_Surface *FB_SetVGA16Mode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); |
| #endif |
| static int FB_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors); |
| static void FB_VideoQuit(_THIS); |
| |
| /* Hardware surface functions */ |
| static int FB_InitHWSurfaces(_THIS, SDL_Surface *screen, char *base, int size); |
| static void FB_FreeHWSurfaces(_THIS); |
| static int FB_AllocHWSurface(_THIS, SDL_Surface *surface); |
| static int FB_LockHWSurface(_THIS, SDL_Surface *surface); |
| static void FB_UnlockHWSurface(_THIS, SDL_Surface *surface); |
| static void FB_FreeHWSurface(_THIS, SDL_Surface *surface); |
| static void FB_WaitVBL(_THIS); |
| static void FB_WaitIdle(_THIS); |
| static int FB_FlipHWSurface(_THIS, SDL_Surface *surface); |
| |
| /* Internal palette functions */ |
| static void FB_SavePalette(_THIS, struct fb_fix_screeninfo *finfo, |
| struct fb_var_screeninfo *vinfo); |
| static void FB_RestorePalette(_THIS); |
| |
| /* Shadow buffer functions */ |
| static FB_bitBlit FB_blit16; |
| static FB_bitBlit FB_blit16blocked; |
| |
| static int SDL_getpagesize(void) |
| { |
| #ifdef HAVE_GETPAGESIZE |
| return getpagesize(); |
| #elif defined(PAGE_SIZE) |
| return PAGE_SIZE; |
| #else |
| #error Can not determine system page size. |
| return 4096; /* this is what it USED to be in Linux... */ |
| #endif |
| } |
| |
| |
| /* Small wrapper for mmap() so we can play nicely with no-mmu hosts |
| * (non-mmu hosts disallow the MAP_SHARED flag) */ |
| |
| static void *do_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset) |
| { |
| void *ret; |
| ret = mmap(start, length, prot, flags, fd, offset); |
| if ( ret == (char *)-1 && (flags & MAP_SHARED) ) { |
| ret = mmap(start, length, prot, |
| (flags & ~MAP_SHARED) | MAP_PRIVATE, fd, offset); |
| } |
| return ret; |
| } |
| |
| /* FB driver bootstrap functions */ |
| |
| static int FB_Available(void) |
| { |
| int console = -1; |
| /* Added check for /fb/0 (devfs) */ |
| /* but - use environment variable first... if it fails, still check defaults */ |
| int idx = 0; |
| const char *SDL_fbdevs[4] = { NULL, "/dev/fb0", "/dev/fb/0", NULL }; |
| |
| SDL_fbdevs[0] = SDL_getenv("SDL_FBDEV"); |
| if( !SDL_fbdevs[0] ) |
| idx++; |
| for( ; SDL_fbdevs[idx]; idx++ ) |
| { |
| console = open(SDL_fbdevs[idx], O_RDWR, 0); |
| if ( console >= 0 ) { |
| close(console); |
| break; |
| } |
| } |
| return(console >= 0); |
| } |
| |
| static void FB_DeleteDevice(SDL_VideoDevice *device) |
| { |
| SDL_free(device->hidden); |
| SDL_free(device); |
| } |
| |
| static SDL_VideoDevice *FB_CreateDevice(int devindex) |
| { |
| SDL_VideoDevice *this; |
| |
| /* Initialize all variables that we clean on shutdown */ |
| this = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice)); |
| if ( this ) { |
| SDL_memset(this, 0, (sizeof *this)); |
| this->hidden = (struct SDL_PrivateVideoData *) |
| SDL_malloc((sizeof *this->hidden)); |
| } |
| if ( (this == NULL) || (this->hidden == NULL) ) { |
| SDL_OutOfMemory(); |
| if ( this ) { |
| SDL_free(this); |
| } |
| return(0); |
| } |
| SDL_memset(this->hidden, 0, (sizeof *this->hidden)); |
| wait_vbl = FB_WaitVBL; |
| wait_idle = FB_WaitIdle; |
| mouse_fd = -1; |
| keyboard_fd = -1; |
| |
| /* Set the function pointers */ |
| this->VideoInit = FB_VideoInit; |
| this->ListModes = FB_ListModes; |
| this->SetVideoMode = FB_SetVideoMode; |
| this->SetColors = FB_SetColors; |
| this->UpdateRects = NULL; |
| this->VideoQuit = FB_VideoQuit; |
| this->AllocHWSurface = FB_AllocHWSurface; |
| this->CheckHWBlit = NULL; |
| this->FillHWRect = NULL; |
| this->SetHWColorKey = NULL; |
| this->SetHWAlpha = NULL; |
| this->LockHWSurface = FB_LockHWSurface; |
| this->UnlockHWSurface = FB_UnlockHWSurface; |
| this->FlipHWSurface = FB_FlipHWSurface; |
| this->FreeHWSurface = FB_FreeHWSurface; |
| this->SetCaption = NULL; |
| this->SetIcon = NULL; |
| this->IconifyWindow = NULL; |
| this->GrabInput = NULL; |
| this->GetWMInfo = NULL; |
| this->InitOSKeymap = FB_InitOSKeymap; |
| this->PumpEvents = FB_PumpEvents; |
| |
| this->free = FB_DeleteDevice; |
| |
| return this; |
| } |
| |
| VideoBootStrap FBCON_bootstrap = { |
| "fbcon", "Linux Framebuffer Console", |
| FB_Available, FB_CreateDevice |
| }; |
| |
| #define FB_MODES_DB "/etc/fb.modes" |
| |
| static int read_fbmodes_line(FILE*f, char* line, int length) |
| { |
| int blank; |
| char* c; |
| int i; |
| |
| blank=0; |
| /* find a relevant line */ |
| do |
| { |
| if (!fgets(line,length,f)) |
| return 0; |
| c=line; |
| while(((*c=='\t')||(*c==' '))&&(*c!=0)) |
| c++; |
| |
| if ((*c=='\n')||(*c=='#')||(*c==0)) |
| blank=1; |
| else |
| blank=0; |
| } |
| while(blank); |
| /* remove whitespace at the begining of the string */ |
| i=0; |
| do |
| { |
| line[i]=c[i]; |
| i++; |
| } |
| while(c[i]!=0); |
| return 1; |
| } |
| |
| static int read_fbmodes_mode(FILE *f, struct fb_var_screeninfo *vinfo) |
| { |
| char line[1024]; |
| char option[256]; |
| |
| /* Find a "geometry" */ |
| do { |
| if (read_fbmodes_line(f, line, sizeof(line))==0) |
| return 0; |
| if (SDL_strncmp(line,"geometry",8)==0) |
| break; |
| } |
| while(1); |
| |
| SDL_sscanf(line, "geometry %d %d %d %d %d", &vinfo->xres, &vinfo->yres, |
| &vinfo->xres_virtual, &vinfo->yres_virtual, &vinfo->bits_per_pixel); |
| if (read_fbmodes_line(f, line, sizeof(line))==0) |
| return 0; |
| |
| SDL_sscanf(line, "timings %d %d %d %d %d %d %d", &vinfo->pixclock, |
| &vinfo->left_margin, &vinfo->right_margin, &vinfo->upper_margin, |
| &vinfo->lower_margin, &vinfo->hsync_len, &vinfo->vsync_len); |
| |
| vinfo->sync=0; |
| vinfo->vmode=FB_VMODE_NONINTERLACED; |
| |
| /* Parse misc options */ |
| do { |
| if (read_fbmodes_line(f, line, sizeof(line))==0) |
| return 0; |
| |
| if (SDL_strncmp(line,"hsync",5)==0) { |
| SDL_sscanf(line,"hsync %s",option); |
| if (SDL_strncmp(option,"high",4)==0) |
| vinfo->sync |= FB_SYNC_HOR_HIGH_ACT; |
| } |
| else if (SDL_strncmp(line,"vsync",5)==0) { |
| SDL_sscanf(line,"vsync %s",option); |
| if (SDL_strncmp(option,"high",4)==0) |
| vinfo->sync |= FB_SYNC_VERT_HIGH_ACT; |
| } |
| else if (SDL_strncmp(line,"csync",5)==0) { |
| SDL_sscanf(line,"csync %s",option); |
| if (SDL_strncmp(option,"high",4)==0) |
| vinfo->sync |= FB_SYNC_COMP_HIGH_ACT; |
| } |
| else if (SDL_strncmp(line,"extsync",5)==0) { |
| SDL_sscanf(line,"extsync %s",option); |
| if (SDL_strncmp(option,"true",4)==0) |
| vinfo->sync |= FB_SYNC_EXT; |
| } |
| else if (SDL_strncmp(line,"laced",5)==0) { |
| SDL_sscanf(line,"laced %s",option); |
| if (SDL_strncmp(option,"true",4)==0) |
| vinfo->vmode |= FB_VMODE_INTERLACED; |
| } |
| else if (SDL_strncmp(line,"double",6)==0) { |
| SDL_sscanf(line,"double %s",option); |
| if (SDL_strncmp(option,"true",4)==0) |
| vinfo->vmode |= FB_VMODE_DOUBLE; |
| } |
| } |
| while(SDL_strncmp(line,"endmode",7)!=0); |
| |
| return 1; |
| } |
| |
| static int FB_CheckMode(_THIS, struct fb_var_screeninfo *vinfo, |
| int index, unsigned int *w, unsigned int *h) |
| { |
| int mode_okay; |
| |
| mode_okay = 0; |
| vinfo->bits_per_pixel = (index+1)*8; |
| vinfo->xres = *w; |
| vinfo->xres_virtual = *w; |
| vinfo->yres = *h; |
| vinfo->yres_virtual = *h; |
| vinfo->activate = FB_ACTIVATE_TEST; |
| if ( ioctl(console_fd, FBIOPUT_VSCREENINFO, vinfo) == 0 ) { |
| #ifdef FBCON_DEBUG |
| fprintf(stderr, "Checked mode %dx%d at %d bpp, got mode %dx%d at %d bpp\n", *w, *h, (index+1)*8, vinfo->xres, vinfo->yres, vinfo->bits_per_pixel); |
| #endif |
| if ( (((vinfo->bits_per_pixel+7)/8)-1) == index ) { |
| *w = vinfo->xres; |
| *h = vinfo->yres; |
| mode_okay = 1; |
| } |
| } |
| return mode_okay; |
| } |
| |
| static int FB_AddMode(_THIS, int index, unsigned int w, unsigned int h, int check_timings) |
| { |
| SDL_Rect *mode; |
| int i; |
| int next_mode; |
| |
| /* Check to see if we already have this mode */ |
| if ( SDL_nummodes[index] > 0 ) { |
| mode = SDL_modelist[index][SDL_nummodes[index]-1]; |
| if ( (mode->w == w) && (mode->h == h) ) { |
| #ifdef FBCON_DEBUG |
| fprintf(stderr, "We already have mode %dx%d at %d bytes per pixel\n", w, h, index+1); |
| #endif |
| return(0); |
| } |
| } |
| |
| /* Only allow a mode if we have a valid timing for it */ |
| if ( check_timings ) { |
| int found_timing = 0; |
| for ( i=0; i<(sizeof(vesa_timings)/sizeof(vesa_timings[0])); ++i ) { |
| if ( (w == vesa_timings[i].xres) && |
| (h == vesa_timings[i].yres) && vesa_timings[i].pixclock ) { |
| found_timing = 1; |
| break; |
| } |
| } |
| if ( !found_timing ) { |
| #ifdef FBCON_DEBUG |
| fprintf(stderr, "No valid timing line for mode %dx%d\n", w, h); |
| #endif |
| return(0); |
| } |
| } |
| |
| /* Set up the new video mode rectangle */ |
| mode = (SDL_Rect *)SDL_malloc(sizeof *mode); |
| if ( mode == NULL ) { |
| SDL_OutOfMemory(); |
| return(-1); |
| } |
| mode->x = 0; |
| mode->y = 0; |
| mode->w = w; |
| mode->h = h; |
| #ifdef FBCON_DEBUG |
| fprintf(stderr, "Adding mode %dx%d at %d bytes per pixel\n", w, h, index+1); |
| #endif |
| |
| /* Allocate the new list of modes, and fill in the new mode */ |
| next_mode = SDL_nummodes[index]; |
| SDL_modelist[index] = (SDL_Rect **) |
| SDL_realloc(SDL_modelist[index], (1+next_mode+1)*sizeof(SDL_Rect *)); |
| if ( SDL_modelist[index] == NULL ) { |
| SDL_OutOfMemory(); |
| SDL_nummodes[index] = 0; |
| SDL_free(mode); |
| return(-1); |
| } |
| SDL_modelist[index][next_mode] = mode; |
| SDL_modelist[index][next_mode+1] = NULL; |
| SDL_nummodes[index]++; |
| |
| return(0); |
| } |
| |
| static int cmpmodes(const void *va, const void *vb) |
| { |
| const SDL_Rect *a = *(const SDL_Rect**)va; |
| const SDL_Rect *b = *(const SDL_Rect**)vb; |
| if ( a->h == b->h ) |
| return b->w - a->w; |
| else |
| return b->h - a->h; |
| } |
| |
| static void FB_SortModes(_THIS) |
| { |
| int i; |
| for ( i=0; i<NUM_MODELISTS; ++i ) { |
| if ( SDL_nummodes[i] > 0 ) { |
| SDL_qsort(SDL_modelist[i], SDL_nummodes[i], sizeof *SDL_modelist[i], cmpmodes); |
| } |
| } |
| } |
| |
| static int FB_VideoInit(_THIS, SDL_PixelFormat *vformat) |
| { |
| const int pagesize = SDL_getpagesize(); |
| struct fb_fix_screeninfo finfo; |
| struct fb_var_screeninfo vinfo; |
| int i, j; |
| int current_index; |
| unsigned int current_w; |
| unsigned int current_h; |
| const char *SDL_fbdev; |
| const char *rotation; |
| FILE *modesdb; |
| |
| /* Initialize the library */ |
| SDL_fbdev = SDL_getenv("SDL_FBDEV"); |
| if ( SDL_fbdev == NULL ) { |
| SDL_fbdev = "/dev/fb0"; |
| } |
| console_fd = open(SDL_fbdev, O_RDWR, 0); |
| if ( console_fd < 0 ) { |
| SDL_SetError("Unable to open %s", SDL_fbdev); |
| return(-1); |
| } |
| |
| #if !SDL_THREADS_DISABLED |
| /* Create the hardware surface lock mutex */ |
| hw_lock = SDL_CreateMutex(); |
| if ( hw_lock == NULL ) { |
| SDL_SetError("Unable to create lock mutex"); |
| FB_VideoQuit(this); |
| return(-1); |
| } |
| #endif |
| |
| /* Get the type of video hardware */ |
| if ( ioctl(console_fd, FBIOGET_FSCREENINFO, &finfo) < 0 ) { |
| SDL_SetError("Couldn't get console hardware info"); |
| FB_VideoQuit(this); |
| return(-1); |
| } |
| switch (finfo.type) { |
| case FB_TYPE_PACKED_PIXELS: |
| /* Supported, no worries.. */ |
| break; |
| #ifdef VGA16_FBCON_SUPPORT |
| case FB_TYPE_VGA_PLANES: |
| /* VGA16 is supported, but that's it */ |
| if ( finfo.type_aux == FB_AUX_VGA_PLANES_VGA4 ) { |
| if ( ioperm(0x3b4, 0x3df - 0x3b4 + 1, 1) < 0 ) { |
| SDL_SetError("No I/O port permissions"); |
| FB_VideoQuit(this); |
| return(-1); |
| } |
| this->SetVideoMode = FB_SetVGA16Mode; |
| break; |
| } |
| /* Fall through to unsupported case */ |
| #endif /* VGA16_FBCON_SUPPORT */ |
| default: |
| SDL_SetError("Unsupported console hardware"); |
| FB_VideoQuit(this); |
| return(-1); |
| } |
| switch (finfo.visual) { |
| case FB_VISUAL_TRUECOLOR: |
| case FB_VISUAL_PSEUDOCOLOR: |
| case FB_VISUAL_STATIC_PSEUDOCOLOR: |
| case FB_VISUAL_DIRECTCOLOR: |
| break; |
| default: |
| SDL_SetError("Unsupported console hardware"); |
| FB_VideoQuit(this); |
| return(-1); |
| } |
| |
| /* Check if the user wants to disable hardware acceleration */ |
| { const char *fb_accel; |
| fb_accel = SDL_getenv("SDL_FBACCEL"); |
| if ( fb_accel ) { |
| finfo.accel = SDL_atoi(fb_accel); |
| } |
| } |
| |
| /* Memory map the device, compensating for buggy PPC mmap() */ |
| mapped_offset = (((long)finfo.smem_start) - |
| (((long)finfo.smem_start)&~(pagesize-1))); |
| mapped_memlen = finfo.smem_len+mapped_offset; |
| mapped_mem = do_mmap(NULL, mapped_memlen, |
| PROT_READ|PROT_WRITE, MAP_SHARED, console_fd, 0); |
| if ( mapped_mem == (char *)-1 ) { |
| SDL_SetError("Unable to memory map the video hardware"); |
| mapped_mem = NULL; |
| FB_VideoQuit(this); |
| return(-1); |
| } |
| |
| /* Determine the current screen depth */ |
| if ( ioctl(console_fd, FBIOGET_VSCREENINFO, &vinfo) < 0 ) { |
| SDL_SetError("Couldn't get console pixel format"); |
| FB_VideoQuit(this); |
| return(-1); |
| } |
| vformat->BitsPerPixel = vinfo.bits_per_pixel; |
| if ( vformat->BitsPerPixel < 8 ) { |
| /* Assuming VGA16, we handle this via a shadow framebuffer */ |
| vformat->BitsPerPixel = 8; |
| } |
| for ( i=0; i<vinfo.red.length; ++i ) { |
| vformat->Rmask <<= 1; |
| vformat->Rmask |= (0x00000001<<vinfo.red.offset); |
| } |
| for ( i=0; i<vinfo.green.length; ++i ) { |
| vformat->Gmask <<= 1; |
| vformat->Gmask |= (0x00000001<<vinfo.green.offset); |
| } |
| for ( i=0; i<vinfo.blue.length; ++i ) { |
| vformat->Bmask <<= 1; |
| vformat->Bmask |= (0x00000001<<vinfo.blue.offset); |
| } |
| saved_vinfo = vinfo; |
| |
| /* Save hardware palette, if needed */ |
| FB_SavePalette(this, &finfo, &vinfo); |
| |
| /* If the I/O registers are available, memory map them so we |
| can take advantage of any supported hardware acceleration. |
| */ |
| vinfo.accel_flags = 0; /* Temporarily reserve registers */ |
| ioctl(console_fd, FBIOPUT_VSCREENINFO, &vinfo); |
| if ( finfo.accel && finfo.mmio_len ) { |
| mapped_iolen = finfo.mmio_len; |
| mapped_io = do_mmap(NULL, mapped_iolen, PROT_READ|PROT_WRITE, |
| MAP_SHARED, console_fd, mapped_memlen); |
| if ( mapped_io == (char *)-1 ) { |
| /* Hmm, failed to memory map I/O registers */ |
| mapped_io = NULL; |
| } |
| } |
| |
| rotate = FBCON_ROTATE_NONE; |
| rotation = SDL_getenv("SDL_VIDEO_FBCON_ROTATION"); |
| if (rotation != NULL) { |
| if (SDL_strlen(rotation) == 0) { |
| shadow_fb = 0; |
| rotate = FBCON_ROTATE_NONE; |
| #ifdef FBCON_DEBUG |
| printf("Not rotating, no shadow\n"); |
| #endif |
| } else if (!SDL_strcmp(rotation, "NONE")) { |
| shadow_fb = 1; |
| rotate = FBCON_ROTATE_NONE; |
| #ifdef FBCON_DEBUG |
| printf("Not rotating, but still using shadow\n"); |
| #endif |
| } else if (!SDL_strcmp(rotation, "CW")) { |
| shadow_fb = 1; |
| rotate = FBCON_ROTATE_CW; |
| #ifdef FBCON_DEBUG |
| printf("Rotating screen clockwise\n"); |
| #endif |
| } else if (!SDL_strcmp(rotation, "CCW")) { |
| shadow_fb = 1; |
| rotate = FBCON_ROTATE_CCW; |
| #ifdef FBCON_DEBUG |
| printf("Rotating screen counter clockwise\n"); |
| #endif |
| } else if (!SDL_strcmp(rotation, "UD")) { |
| shadow_fb = 1; |
| rotate = FBCON_ROTATE_UD; |
| #ifdef FBCON_DEBUG |
| printf("Rotating screen upside down\n"); |
| #endif |
| } else { |
| SDL_SetError("\"%s\" is not a valid value for " |
| "SDL_VIDEO_FBCON_ROTATION", rotation); |
| return(-1); |
| } |
| } |
| |
| if (rotate == FBCON_ROTATE_CW || rotate == FBCON_ROTATE_CCW) { |
| current_w = vinfo.yres; |
| current_h = vinfo.xres; |
| } else { |
| current_w = vinfo.xres; |
| current_h = vinfo.yres; |
| } |
| |
| /* Query for the list of available video modes */ |
| current_index = ((vinfo.bits_per_pixel+7)/8)-1; |
| modesdb = fopen(FB_MODES_DB, "r"); |
| for ( i=0; i<NUM_MODELISTS; ++i ) { |
| SDL_nummodes[i] = 0; |
| SDL_modelist[i] = NULL; |
| } |
| if ( SDL_getenv("SDL_FB_BROKEN_MODES") != NULL ) { |
| FB_AddMode(this, current_index, current_w, current_h, 0); |
| } else if(modesdb) { |
| while ( read_fbmodes_mode(modesdb, &vinfo) ) { |
| for ( i=0; i<NUM_MODELISTS; ++i ) { |
| unsigned int w, h; |
| |
| if (rotate == FBCON_ROTATE_CW || rotate == FBCON_ROTATE_CCW) { |
| w = vinfo.yres; |
| h = vinfo.xres; |
| } else { |
| w = vinfo.xres; |
| h = vinfo.yres; |
| } |
| /* See if we are querying for the current mode */ |
| if ( i == current_index ) { |
| if ( (current_w > w) || (current_h > h) ) { |
| /* Only check once */ |
| FB_AddMode(this, i, current_w, current_h, 0); |
| current_index = -1; |
| } |
| } |
| if ( FB_CheckMode(this, &vinfo, i, &w, &h) ) { |
| FB_AddMode(this, i, w, h, 0); |
| } |
| } |
| } |
| fclose(modesdb); |
| FB_SortModes(this); |
| } else { |
| for ( i=0; i<NUM_MODELISTS; ++i ) { |
| for ( j=0; j<(sizeof(checkres)/sizeof(checkres[0])); ++j ) { |
| unsigned int w, h; |
| |
| if (rotate == FBCON_ROTATE_CW || rotate == FBCON_ROTATE_CCW) { |
| w = checkres[j].h; |
| h = checkres[j].w; |
| } else { |
| w = checkres[j].w; |
| h = checkres[j].h; |
| } |
| /* See if we are querying for the current mode */ |
| if ( i == current_index ) { |
| if ( (current_w > w) || (current_h > h) ) { |
| /* Only check once */ |
| FB_AddMode(this, i, current_w, current_h, 0); |
| current_index = -1; |
| } |
| } |
| if ( FB_CheckMode(this, &vinfo, i, &w, &h) ) { |
| FB_AddMode(this, i, w, h, 1); |
| } |
| } |
| } |
| } |
| |
| this->info.current_w = current_w; |
| this->info.current_h = current_h; |
| this->info.wm_available = 0; |
| this->info.hw_available = !shadow_fb; |
| this->info.video_mem = shadow_fb ? 0 : finfo.smem_len/1024; |
| /* Fill in our hardware acceleration capabilities */ |
| if ( mapped_io ) { |
| switch (finfo.accel) { |
| case FB_ACCEL_MATROX_MGA2064W: |
| case FB_ACCEL_MATROX_MGA1064SG: |
| case FB_ACCEL_MATROX_MGA2164W: |
| case FB_ACCEL_MATROX_MGA2164W_AGP: |
| case FB_ACCEL_MATROX_MGAG100: |
| /*case FB_ACCEL_MATROX_MGAG200: G200 acceleration broken! */ |
| case FB_ACCEL_MATROX_MGAG400: |
| #ifdef FBACCEL_DEBUG |
| printf("Matrox hardware accelerator!\n"); |
| #endif |
| FB_MatroxAccel(this, finfo.accel); |
| break; |
| case FB_ACCEL_3DFX_BANSHEE: |
| #ifdef FBACCEL_DEBUG |
| printf("3DFX hardware accelerator!\n"); |
| #endif |
| FB_3DfxAccel(this, finfo.accel); |
| break; |
| case FB_ACCEL_NV3: |
| case FB_ACCEL_NV4: |
| #ifdef FBACCEL_DEBUG |
| printf("NVidia hardware accelerator!\n"); |
| #endif |
| FB_RivaAccel(this, finfo.accel); |
| break; |
| default: |
| #ifdef FBACCEL_DEBUG |
| printf("Unknown hardware accelerator.\n"); |
| #endif |
| break; |
| } |
| } |
| |
| if (shadow_fb) { |
| shadow_mem = (char *)SDL_malloc(mapped_memlen); |
| if (shadow_mem == NULL) { |
| SDL_SetError("No memory for shadow"); |
| return (-1); |
| } |
| } |
| |
| /* Enable mouse and keyboard support */ |
| if ( FB_OpenKeyboard(this) < 0 ) { |
| FB_VideoQuit(this); |
| return(-1); |
| } |
| if ( FB_OpenMouse(this) < 0 ) { |
| const char *sdl_nomouse; |
| |
| sdl_nomouse = SDL_getenv("SDL_NOMOUSE"); |
| if ( ! sdl_nomouse ) { |
| SDL_SetError("Unable to open mouse"); |
| FB_VideoQuit(this); |
| return(-1); |
| } |
| } |
| |
| /* We're done! */ |
| return(0); |
| } |
| |
| static SDL_Rect **FB_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) |
| { |
| return(SDL_modelist[((format->BitsPerPixel+7)/8)-1]); |
| } |
| |
| /* Various screen update functions available */ |
| static void FB_DirectUpdate(_THIS, int numrects, SDL_Rect *rects); |
| #ifdef VGA16_FBCON_SUPPORT |
| static void FB_VGA16Update(_THIS, int numrects, SDL_Rect *rects); |
| #endif |
| |
| #ifdef FBCON_DEBUG |
| static void print_vinfo(struct fb_var_screeninfo *vinfo) |
| { |
| fprintf(stderr, "Printing vinfo:\n"); |
| fprintf(stderr, "\txres: %d\n", vinfo->xres); |
| fprintf(stderr, "\tyres: %d\n", vinfo->yres); |
| fprintf(stderr, "\txres_virtual: %d\n", vinfo->xres_virtual); |
| fprintf(stderr, "\tyres_virtual: %d\n", vinfo->yres_virtual); |
| fprintf(stderr, "\txoffset: %d\n", vinfo->xoffset); |
| fprintf(stderr, "\tyoffset: %d\n", vinfo->yoffset); |
| fprintf(stderr, "\tbits_per_pixel: %d\n", vinfo->bits_per_pixel); |
| fprintf(stderr, "\tgrayscale: %d\n", vinfo->grayscale); |
| fprintf(stderr, "\tnonstd: %d\n", vinfo->nonstd); |
| fprintf(stderr, "\tactivate: %d\n", vinfo->activate); |
| fprintf(stderr, "\theight: %d\n", vinfo->height); |
| fprintf(stderr, "\twidth: %d\n", vinfo->width); |
| fprintf(stderr, "\taccel_flags: %d\n", vinfo->accel_flags); |
| fprintf(stderr, "\tpixclock: %d\n", vinfo->pixclock); |
| fprintf(stderr, "\tleft_margin: %d\n", vinfo->left_margin); |
| fprintf(stderr, "\tright_margin: %d\n", vinfo->right_margin); |
| fprintf(stderr, "\tupper_margin: %d\n", vinfo->upper_margin); |
| fprintf(stderr, "\tlower_margin: %d\n", vinfo->lower_margin); |
| fprintf(stderr, "\thsync_len: %d\n", vinfo->hsync_len); |
| fprintf(stderr, "\tvsync_len: %d\n", vinfo->vsync_len); |
| fprintf(stderr, "\tsync: %d\n", vinfo->sync); |
| fprintf(stderr, "\tvmode: %d\n", vinfo->vmode); |
| fprintf(stderr, "\tred: %d/%d\n", vinfo->red.length, vinfo->red.offset); |
| fprintf(stderr, "\tgreen: %d/%d\n", vinfo->green.length, vinfo->green.offset); |
| fprintf(stderr, "\tblue: %d/%d\n", vinfo->blue.length, vinfo->blue.offset); |
| fprintf(stderr, "\talpha: %d/%d\n", vinfo->transp.length, vinfo->transp.offset); |
| } |
| static void print_finfo(struct fb_fix_screeninfo *finfo) |
| { |
| fprintf(stderr, "Printing finfo:\n"); |
| fprintf(stderr, "\tsmem_start = %p\n", (char *)finfo->smem_start); |
| fprintf(stderr, "\tsmem_len = %d\n", finfo->smem_len); |
| fprintf(stderr, "\ttype = %d\n", finfo->type); |
| fprintf(stderr, "\ttype_aux = %d\n", finfo->type_aux); |
| fprintf(stderr, "\tvisual = %d\n", finfo->visual); |
| fprintf(stderr, "\txpanstep = %d\n", finfo->xpanstep); |
| fprintf(stderr, "\typanstep = %d\n", finfo->ypanstep); |
| fprintf(stderr, "\tywrapstep = %d\n", finfo->ywrapstep); |
| fprintf(stderr, "\tline_length = %d\n", finfo->line_length); |
| fprintf(stderr, "\tmmio_start = %p\n", (char *)finfo->mmio_start); |
| fprintf(stderr, "\tmmio_len = %d\n", finfo->mmio_len); |
| fprintf(stderr, "\taccel = %d\n", finfo->accel); |
| } |
| #endif |
| |
| static int choose_fbmodes_mode(struct fb_var_screeninfo *vinfo) |
| { |
| int matched; |
| FILE *modesdb; |
| struct fb_var_screeninfo cinfo; |
| |
| matched = 0; |
| modesdb = fopen(FB_MODES_DB, "r"); |
| if ( modesdb ) { |
| /* Parse the mode definition file */ |
| while ( read_fbmodes_mode(modesdb, &cinfo) ) { |
| if ( (vinfo->xres == cinfo.xres && vinfo->yres == cinfo.yres) && |
| (!matched || (vinfo->bits_per_pixel == cinfo.bits_per_pixel)) ) { |
| vinfo->pixclock = cinfo.pixclock; |
| vinfo->left_margin = cinfo.left_margin; |
| vinfo->right_margin = cinfo.right_margin; |
| vinfo->upper_margin = cinfo.upper_margin; |
| vinfo->lower_margin = cinfo.lower_margin; |
| vinfo->hsync_len = cinfo.hsync_len; |
| vinfo->vsync_len = cinfo.vsync_len; |
| if ( matched ) { |
| break; |
| } |
| matched = 1; |
| } |
| } |
| fclose(modesdb); |
| } |
| return(matched); |
| } |
| |
| static int choose_vesa_mode(struct fb_var_screeninfo *vinfo) |
| { |
| int matched; |
| int i; |
| |
| /* Check for VESA timings */ |
| matched = 0; |
| for ( i=0; i<(sizeof(vesa_timings)/sizeof(vesa_timings[0])); ++i ) { |
| if ( (vinfo->xres == vesa_timings[i].xres) && |
| (vinfo->yres == vesa_timings[i].yres) ) { |
| #ifdef FBCON_DEBUG |
| fprintf(stderr, "Using VESA timings for %dx%d\n", |
| vinfo->xres, vinfo->yres); |
| #endif |
| if ( vesa_timings[i].pixclock ) { |
| vinfo->pixclock = vesa_timings[i].pixclock; |
| } |
| vinfo->left_margin = vesa_timings[i].left; |
| vinfo->right_margin = vesa_timings[i].right; |
| vinfo->upper_margin = vesa_timings[i].upper; |
| vinfo->lower_margin = vesa_timings[i].lower; |
| vinfo->hsync_len = vesa_timings[i].hslen; |
| vinfo->vsync_len = vesa_timings[i].vslen; |
| vinfo->sync = vesa_timings[i].sync; |
| vinfo->vmode = vesa_timings[i].vmode; |
| matched = 1; |
| break; |
| } |
| } |
| return(matched); |
| } |
| |
| #ifdef VGA16_FBCON_SUPPORT |
| static SDL_Surface *FB_SetVGA16Mode(_THIS, SDL_Surface *current, |
| int width, int height, int bpp, Uint32 flags) |
| { |
| struct fb_fix_screeninfo finfo; |
| struct fb_var_screeninfo vinfo; |
| |
| /* Set the terminal into graphics mode */ |
| if ( FB_EnterGraphicsMode(this) < 0 ) { |
| return(NULL); |
| } |
| |
| /* Restore the original palette */ |
| FB_RestorePalette(this); |
| |
| /* Set the video mode and get the final screen format */ |
| if ( ioctl(console_fd, FBIOGET_VSCREENINFO, &vinfo) < 0 ) { |
| SDL_SetError("Couldn't get console screen info"); |
| return(NULL); |
| } |
| cache_vinfo = vinfo; |
| #ifdef FBCON_DEBUG |
| fprintf(stderr, "Printing actual vinfo:\n"); |
| print_vinfo(&vinfo); |
| #endif |
| if ( ! SDL_ReallocFormat(current, bpp, 0, 0, 0, 0) ) { |
| return(NULL); |
| } |
| current->format->palette->ncolors = 16; |
| |
| /* Get the fixed information about the console hardware. |
| This is necessary since finfo.line_length changes. |
| */ |
| if ( ioctl(console_fd, FBIOGET_FSCREENINFO, &finfo) < 0 ) { |
| SDL_SetError("Couldn't get console hardware info"); |
| return(NULL); |
| } |
| #ifdef FBCON_DEBUG |
| fprintf(stderr, "Printing actual finfo:\n"); |
| print_finfo(&finfo); |
| #endif |
| |
| /* Save hardware palette, if needed */ |
| FB_SavePalette(this, &finfo, &vinfo); |
| |
| /* Set up the new mode framebuffer */ |
| current->flags = SDL_FULLSCREEN; |
| current->w = vinfo.xres; |
| current->h = vinfo.yres; |
| current->pitch = current->w; |
| current->pixels = SDL_malloc(current->h*current->pitch); |
| |
| /* Set the update rectangle function */ |
| this->UpdateRects = FB_VGA16Update; |
| |
| /* We're done */ |
| return(current); |
| } |
| #endif /* VGA16_FBCON_SUPPORT */ |
| |
| static SDL_Surface *FB_SetVideoMode(_THIS, SDL_Surface *current, |
| int width, int height, int bpp, Uint32 flags) |
| { |
| struct fb_fix_screeninfo finfo; |
| struct fb_var_screeninfo vinfo; |
| int i; |
| Uint32 Rmask; |
| Uint32 Gmask; |
| Uint32 Bmask; |
| char *surfaces_mem; |
| int surfaces_len; |
| |
| /* Set the terminal into graphics mode */ |
| if ( FB_EnterGraphicsMode(this) < 0 ) { |
| return(NULL); |
| } |
| |
| /* Restore the original palette */ |
| FB_RestorePalette(this); |
| |
| /* Set the video mode and get the final screen format */ |
| if ( ioctl(console_fd, FBIOGET_VSCREENINFO, &vinfo) < 0 ) { |
| SDL_SetError("Couldn't get console screen info"); |
| return(NULL); |
| } |
| #ifdef FBCON_DEBUG |
| fprintf(stderr, "Printing original vinfo:\n"); |
| print_vinfo(&vinfo); |
| #endif |
| /* Do not use double buffering with shadow buffer */ |
| if (shadow_fb) { |
| flags &= ~SDL_DOUBLEBUF; |
| } |
| |
| if ( (vinfo.xres != width) || (vinfo.yres != height) || |
| (vinfo.bits_per_pixel != bpp) || (flags & SDL_DOUBLEBUF) ) { |
| vinfo.activate = FB_ACTIVATE_NOW; |
| vinfo.accel_flags = 0; |
| vinfo.bits_per_pixel = bpp; |
| vinfo.xres = width; |
| vinfo.xres_virtual = width; |
| vinfo.yres = height; |
| if ( flags & SDL_DOUBLEBUF ) { |
| vinfo.yres_virtual = height*2; |
| } else { |
| vinfo.yres_virtual = height; |
| } |
| vinfo.xoffset = 0; |
| vinfo.yoffset = 0; |
| vinfo.red.length = vinfo.red.offset = 0; |
| vinfo.green.length = vinfo.green.offset = 0; |
| vinfo.blue.length = vinfo.blue.offset = 0; |
| vinfo.transp.length = vinfo.transp.offset = 0; |
| if ( ! choose_fbmodes_mode(&vinfo) ) { |
| choose_vesa_mode(&vinfo); |
| } |
| #ifdef FBCON_DEBUG |
| fprintf(stderr, "Printing wanted vinfo:\n"); |
| print_vinfo(&vinfo); |
| #endif |
| if ( !shadow_fb && |
| ioctl(console_fd, FBIOPUT_VSCREENINFO, &vinfo) < 0 ) { |
| vinfo.yres_virtual = height; |
| if ( ioctl(console_fd, FBIOPUT_VSCREENINFO, &vinfo) < 0 ) { |
| SDL_SetError("Couldn't set console screen info"); |
| return(NULL); |
| } |
| } |
| } else { |
| int maxheight; |
| |
| /* Figure out how much video memory is available */ |
| if ( flags & SDL_DOUBLEBUF ) { |
| maxheight = height*2; |
| } else { |
| maxheight = height; |
| } |
| if ( vinfo.yres_virtual > maxheight ) { |
| vinfo.yres_virtual = maxheight; |
| } |
| } |
| cache_vinfo = vinfo; |
| #ifdef FBCON_DEBUG |
| fprintf(stderr, "Printing actual vinfo:\n"); |
| print_vinfo(&vinfo); |
| #endif |
| Rmask = 0; |
| for ( i=0; i<vinfo.red.length; ++i ) { |
| Rmask <<= 1; |
| Rmask |= (0x00000001<<vinfo.red.offset); |
| } |
| Gmask = 0; |
| for ( i=0; i<vinfo.green.length; ++i ) { |
| Gmask <<= 1; |
| Gmask |= (0x00000001<<vinfo.green.offset); |
| } |
| Bmask = 0; |
| for ( i=0; i<vinfo.blue.length; ++i ) { |
| Bmask <<= 1; |
| Bmask |= (0x00000001<<vinfo.blue.offset); |
| } |
| if ( ! SDL_ReallocFormat(current, vinfo.bits_per_pixel, |
| Rmask, Gmask, Bmask, 0) ) { |
| return(NULL); |
| } |
| |
| /* Get the fixed information about the console hardware. |
| This is necessary since finfo.line_length changes. |
| */ |
| if ( ioctl(console_fd, FBIOGET_FSCREENINFO, &finfo) < 0 ) { |
| SDL_SetError("Couldn't get console hardware info"); |
| return(NULL); |
| } |
| |
| /* Save hardware palette, if needed */ |
| FB_SavePalette(this, &finfo, &vinfo); |
| |
| if (shadow_fb) { |
| if (vinfo.bits_per_pixel == 16) { |
| blitFunc = (rotate == FBCON_ROTATE_NONE || |
| rotate == FBCON_ROTATE_UD) ? |
| FB_blit16 : FB_blit16blocked; |
| } else { |
| #ifdef FBCON_DEBUG |
| fprintf(stderr, "Init vinfo:\n"); |
| print_vinfo(&vinfo); |
| #endif |
| SDL_SetError("Using software buffer, but no blitter " |
| "function is available for %d bpp.", |
| vinfo.bits_per_pixel); |
| return(NULL); |
| } |
| } |
| |
| /* Set up the new mode framebuffer */ |
| current->flags &= SDL_FULLSCREEN; |
| if (shadow_fb) { |
| current->flags |= SDL_SWSURFACE; |
| } else { |
| current->flags |= SDL_HWSURFACE; |
| } |
| current->w = vinfo.xres; |
| current->h = vinfo.yres; |
| if (shadow_fb) { |
| current->pitch = current->w * ((vinfo.bits_per_pixel + 7) / 8); |
| current->pixels = shadow_mem; |
| physlinebytes = finfo.line_length; |
| } else { |
| current->pitch = finfo.line_length; |
| current->pixels = mapped_mem+mapped_offset; |
| } |
| |
| /* Set up the information for hardware surfaces */ |
| surfaces_mem = (char *)current->pixels + |
| vinfo.yres_virtual*current->pitch; |
| surfaces_len = (shadow_fb) ? |
| 0 : (mapped_memlen-(surfaces_mem-mapped_mem)); |
| |
| FB_FreeHWSurfaces(this); |
| FB_InitHWSurfaces(this, current, surfaces_mem, surfaces_len); |
| |
| /* Let the application know we have a hardware palette */ |
| switch (finfo.visual) { |
| case FB_VISUAL_PSEUDOCOLOR: |
| current->flags |= SDL_HWPALETTE; |
| break; |
| default: |
| break; |
| } |
| |
| /* Update for double-buffering, if we can */ |
| if ( flags & SDL_DOUBLEBUF ) { |
| if ( vinfo.yres_virtual == (height*2) ) { |
| current->flags |= SDL_DOUBLEBUF; |
| flip_page = 0; |
| flip_address[0] = (char *)current->pixels; |
| flip_address[1] = (char *)current->pixels+ |
| current->h*current->pitch; |
| this->screen = current; |
| FB_FlipHWSurface(this, current); |
| this->screen = NULL; |
| } |
| } |
| |
| /* Set the update rectangle function */ |
| this->UpdateRects = FB_DirectUpdate; |
| |
| /* We're done */ |
| return(current); |
| } |
| |
| #ifdef FBCON_DEBUG |
| void FB_DumpHWSurfaces(_THIS) |
| { |
| vidmem_bucket *bucket; |
| |
| printf("Memory left: %d (%d total)\n", surfaces_memleft, surfaces_memtotal); |
| printf("\n"); |
| printf(" Base Size\n"); |
| for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
| printf("Bucket: %p, %d (%s)\n", bucket->base, bucket->size, bucket->used ? "used" : "free"); |
| if ( bucket->prev ) { |
| if ( bucket->base != bucket->prev->base+bucket->prev->size ) { |
| printf("Warning, corrupt bucket list! (prev)\n"); |
| } |
| } else { |
| if ( bucket != &surfaces ) { |
| printf("Warning, corrupt bucket list! (!prev)\n"); |
| } |
| } |
| if ( bucket->next ) { |
| if ( bucket->next->base != bucket->base+bucket->size ) { |
| printf("Warning, corrupt bucket list! (next)\n"); |
| } |
| } |
| } |
| printf("\n"); |
| } |
| #endif |
| |
| static int FB_InitHWSurfaces(_THIS, SDL_Surface *screen, char *base, int size) |
| { |
| vidmem_bucket *bucket; |
| |
| surfaces_memtotal = size; |
| surfaces_memleft = size; |
| |
| if ( surfaces_memleft > 0 ) { |
| bucket = (vidmem_bucket *)SDL_malloc(sizeof(*bucket)); |
| if ( bucket == NULL ) { |
| SDL_OutOfMemory(); |
| return(-1); |
| } |
| bucket->prev = &surfaces; |
| bucket->used = 0; |
| bucket->dirty = 0; |
| bucket->base = base; |
| bucket->size = size; |
| bucket->next = NULL; |
| } else { |
| bucket = NULL; |
| } |
| |
| surfaces.prev = NULL; |
| surfaces.used = 1; |
| surfaces.dirty = 0; |
| surfaces.base = screen->pixels; |
| surfaces.size = (unsigned int)((long)base - (long)surfaces.base); |
| surfaces.next = bucket; |
| screen->hwdata = (struct private_hwdata *)&surfaces; |
| return(0); |
| } |
| static void FB_FreeHWSurfaces(_THIS) |
| { |
| vidmem_bucket *bucket, *freeable; |
| |
| bucket = surfaces.next; |
| while ( bucket ) { |
| freeable = bucket; |
| bucket = bucket->next; |
| SDL_free(freeable); |
| } |
| surfaces.next = NULL; |
| } |
| |
| static int FB_AllocHWSurface(_THIS, SDL_Surface *surface) |
| { |
| vidmem_bucket *bucket; |
| int size; |
| int extra; |
| |
| /* Temporarily, we only allow surfaces the same width as display. |
| Some blitters require the pitch between two hardware surfaces |
| to be the same. Others have interesting alignment restrictions. |
| Until someone who knows these details looks at the code... |
| */ |
| if ( surface->pitch > SDL_VideoSurface->pitch ) { |
| SDL_SetError("Surface requested wider than screen"); |
| return(-1); |
| } |
| surface->pitch = SDL_VideoSurface->pitch; |
| size = surface->h * surface->pitch; |
| #ifdef FBCON_DEBUG |
| fprintf(stderr, "Allocating bucket of %d bytes\n", size); |
| #endif |
| |
| /* Quick check for available mem */ |
| if ( size > surfaces_memleft ) { |
| SDL_SetError("Not enough video memory"); |
| return(-1); |
| } |
| |
| /* Search for an empty bucket big enough */ |
| for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
| if ( ! bucket->used && (size <= bucket->size) ) { |
| break; |
| } |
| } |
| if ( bucket == NULL ) { |
| SDL_SetError("Video memory too fragmented"); |
| return(-1); |
| } |
| |
| /* Create a new bucket for left-over memory */ |
| extra = (bucket->size - size); |
| if ( extra ) { |
| vidmem_bucket *newbucket; |
| |
| #ifdef FBCON_DEBUG |
| fprintf(stderr, "Adding new free bucket of %d bytes\n", extra); |
| #endif |
| newbucket = (vidmem_bucket *)SDL_malloc(sizeof(*newbucket)); |
| if ( newbucket == NULL ) { |
| SDL_OutOfMemory(); |
| return(-1); |
| } |
| newbucket->prev = bucket; |
| newbucket->used = 0; |
| newbucket->base = bucket->base+size; |
| newbucket->size = extra; |
| newbucket->next = bucket->next; |
| if ( bucket->next ) { |
| bucket->next->prev = newbucket; |
| } |
| bucket->next = newbucket; |
| } |
| |
| /* Set the current bucket values and return it! */ |
| bucket->used = 1; |
| bucket->size = size; |
| bucket->dirty = 0; |
| #ifdef FBCON_DEBUG |
| fprintf(stderr, "Allocated %d bytes at %p\n", bucket->size, bucket->base); |
| #endif |
| surfaces_memleft -= size; |
| surface->flags |= SDL_HWSURFACE; |
| surface->pixels = bucket->base; |
| surface->hwdata = (struct private_hwdata *)bucket; |
| return(0); |
| } |
| static void FB_FreeHWSurface(_THIS, SDL_Surface *surface) |
| { |
| vidmem_bucket *bucket, *freeable; |
| |
| /* Look for the bucket in the current list */ |
| for ( bucket=&surfaces; bucket; bucket=bucket->next ) { |
| if ( bucket == (vidmem_bucket *)surface->hwdata ) { |
| break; |
| } |
| } |
| if ( bucket && bucket->used ) { |
| /* Add the memory back to the total */ |
| #ifdef DGA_DEBUG |
| printf("Freeing bucket of %d bytes\n", bucket->size); |
| #endif |
| surfaces_memleft += bucket->size; |
| |
| /* Can we merge the space with surrounding buckets? */ |
| bucket->used = 0; |
| if ( bucket->next && ! bucket->next->used ) { |
| #ifdef DGA_DEBUG |
| printf("Merging with next bucket, for %d total bytes\n", bucket->size+bucket->next->size); |
| #endif |
| freeable = bucket->next; |
| bucket->size += bucket->next->size; |
| bucket->next = bucket->next->next; |
| if ( bucket->next ) { |
| bucket->next->prev = bucket; |
| } |
| SDL_free(freeable); |
| } |
| if ( bucket->prev && ! bucket->prev->used ) { |
| #ifdef DGA_DEBUG |
| printf("Merging with previous bucket, for %d total bytes\n", bucket->prev->size+bucket->size); |
| #endif |
| freeable = bucket; |
| bucket->prev->size += bucket->size; |
| bucket->prev->next = bucket->next; |
| if ( bucket->next ) { |
| bucket->next->prev = bucket->prev; |
| } |
| SDL_free(freeable); |
| } |
| } |
| surface->pixels = NULL; |
| surface->hwdata = NULL; |
| } |
| |
| static int FB_LockHWSurface(_THIS, SDL_Surface *surface) |
| { |
| if ( switched_away ) { |
| return -2; /* no hardware access */ |
| } |
| if ( surface == this->screen ) { |
| SDL_mutexP(hw_lock); |
| if ( FB_IsSurfaceBusy(surface) ) { |
| FB_WaitBusySurfaces(this); |
| } |
| } else { |
| if ( FB_IsSurfaceBusy(surface) ) { |
| FB_WaitBusySurfaces(this); |
| } |
| } |
| return(0); |
| } |
| static void FB_UnlockHWSurface(_THIS, SDL_Surface *surface) |
| { |
| if ( surface == this->screen ) { |
| SDL_mutexV(hw_lock); |
| } |
| } |
| |
| static void FB_WaitVBL(_THIS) |
| { |
| #ifdef FBIOWAITRETRACE /* Heheh, this didn't make it into the main kernel */ |
| ioctl(console_fd, FBIOWAITRETRACE, 0); |
| #endif |
| return; |
| } |
| |
| static void FB_WaitIdle(_THIS) |
| { |
| return; |
| } |
| |
| static int FB_FlipHWSurface(_THIS, SDL_Surface *surface) |
| { |
| if ( switched_away ) { |
| return -2; /* no hardware access */ |
| } |
| |
| /* Wait for vertical retrace and then flip display */ |
| cache_vinfo.yoffset = flip_page*surface->h; |
| if ( FB_IsSurfaceBusy(this->screen) ) { |
| FB_WaitBusySurfaces(this); |
| } |
| wait_vbl(this); |
| if ( ioctl(console_fd, FBIOPAN_DISPLAY, &cache_vinfo) < 0 ) { |
| SDL_SetError("ioctl(FBIOPAN_DISPLAY) failed"); |
| return(-1); |
| } |
| flip_page = !flip_page; |
| |
| surface->pixels = flip_address[flip_page]; |
| return(0); |
| } |
| |
| static void FB_blit16(Uint8 *byte_src_pos, int src_right_delta, int src_down_delta, |
| Uint8 *byte_dst_pos, int dst_linebytes, int width, int height) |
| { |
| int w; |
| Uint16 *src_pos = (Uint16 *)byte_src_pos; |
| Uint16 *dst_pos = (Uint16 *)byte_dst_pos; |
| |
| while (height) { |
| Uint16 *src = src_pos; |
| Uint16 *dst = dst_pos; |
| for (w = width; w != 0; w--) { |
| *dst = *src; |
| src += src_right_delta; |
| dst++; |
| } |
| dst_pos = (Uint16 *)((Uint8 *)dst_pos + dst_linebytes); |
| src_pos += src_down_delta; |
| height--; |
| } |
| } |
| |
| #define BLOCKSIZE_W 32 |
| #define BLOCKSIZE_H 32 |
| |
| static void FB_blit16blocked(Uint8 *byte_src_pos, int src_right_delta, int src_down_delta, |
| Uint8 *byte_dst_pos, int dst_linebytes, int width, int height) |
| { |
| int w; |
| Uint16 *src_pos = (Uint16 *)byte_src_pos; |
| Uint16 *dst_pos = (Uint16 *)byte_dst_pos; |
| |
| while (height > 0) { |
| Uint16 *src = src_pos; |
| Uint16 *dst = dst_pos; |
| for (w = width; w > 0; w -= BLOCKSIZE_W) { |
| FB_blit16((Uint8 *)src, |
| src_right_delta, |
| src_down_delta, |
| (Uint8 *)dst, |
| dst_linebytes, |
| min(w, BLOCKSIZE_W), |
| min(height, BLOCKSIZE_H)); |
| src += src_right_delta * BLOCKSIZE_W; |
| dst += BLOCKSIZE_W; |
| } |
| dst_pos = (Uint16 *)((Uint8 *)dst_pos + dst_linebytes * BLOCKSIZE_H); |
| src_pos += src_down_delta * BLOCKSIZE_H; |
| height -= BLOCKSIZE_H; |
| } |
| } |
| |
| static void FB_DirectUpdate(_THIS, int numrects, SDL_Rect *rects) |
| { |
| int width = cache_vinfo.xres; |
| int height = cache_vinfo.yres; |
| int bytes_per_pixel = (cache_vinfo.bits_per_pixel + 7) / 8; |
| int i; |
| |
| if (!shadow_fb) { |
| /* The application is already updating the visible video memory */ |
| return; |
| } |
| |
| if (cache_vinfo.bits_per_pixel != 16) { |
| SDL_SetError("Shadow copy only implemented for 16 bpp"); |
| return; |
| } |
| |
| for (i = 0; i < numrects; i++) { |
| int x1, y1, x2, y2; |
| int scr_x1, scr_y1, scr_x2, scr_y2; |
| int sha_x1, sha_y1; |
| int shadow_right_delta; /* Address change when moving right in dest */ |
| int shadow_down_delta; /* Address change when moving down in dest */ |
| char *src_start; |
| char *dst_start; |
| |
| x1 = rects[i].x; |
| y1 = rects[i].y; |
| x2 = x1 + rects[i].w; |
| y2 = y1 + rects[i].h; |
| |
| if (x1 < 0) { |
| x1 = 0; |
| } else if (x1 > width) { |
| x1 = width; |
| } |
| if (x2 < 0) { |
| x2 = 0; |
| } else if (x2 > width) { |
| x2 = width; |
| } |
| if (y1 < 0) { |
| y1 = 0; |
| } else if (y1 > height) { |
| y1 = height; |
| } |
| if (y2 < 0) { |
| y2 = 0; |
| } else if (y2 > height) { |
| y2 = height; |
| } |
| if (x2 <= x1 || y2 <= y1) { |
| continue; |
| } |
| |
| switch (rotate) { |
| case FBCON_ROTATE_NONE: |
| sha_x1 = scr_x1 = x1; |
| sha_y1 = scr_y1 = y1; |
| scr_x2 = x2; |
| scr_y2 = y2; |
| shadow_right_delta = 1; |
| shadow_down_delta = width; |
| break; |
| case FBCON_ROTATE_CCW: |
| scr_x1 = y1; |
| scr_y1 = width - x2; |
| scr_x2 = y2; |
| scr_y2 = width - x1; |
| sha_x1 = x2 - 1; |
| sha_y1 = y1; |
| shadow_right_delta = width; |
| shadow_down_delta = -1; |
| break; |
| case FBCON_ROTATE_UD: |
| scr_x1 = width - x2; |
| scr_y1 = height - y2; |
| scr_x2 = width - x1; |
| scr_y2 = height - y1; |
| sha_x1 = x2 - 1; |
| sha_y1 = y2 - 1; |
| shadow_right_delta = -1; |
| shadow_down_delta = -width; |
| break; |
| case FBCON_ROTATE_CW: |
| scr_x1 = height - y2; |
| scr_y1 = x1; |
| scr_x2 = height - y1; |
| scr_y2 = x2; |
| sha_x1 = x1; |
| sha_y1 = y2 - 1; |
| shadow_right_delta = -width; |
| shadow_down_delta = 1; |
| break; |
| default: |
| SDL_SetError("Unknown rotation"); |
| return; |
| } |
| |
| src_start = shadow_mem + |
| (sha_y1 * width + sha_x1) * bytes_per_pixel; |
| dst_start = mapped_mem + mapped_offset + scr_y1 * physlinebytes + |
| scr_x1 * bytes_per_pixel; |
| |
| blitFunc((Uint8 *) src_start, |
| shadow_right_delta, |
| shadow_down_delta, |
| (Uint8 *) dst_start, |
| physlinebytes, |
| scr_x2 - scr_x1, |
| scr_y2 - scr_y1); |
| } |
| } |
| |
| #ifdef VGA16_FBCON_SUPPORT |
| /* Code adapted with thanks from the XFree86 VGA16 driver! :) */ |
| #define writeGr(index, value) \ |
| outb(index, 0x3CE); \ |
| outb(value, 0x3CF); |
| #define writeSeq(index, value) \ |
| outb(index, 0x3C4); \ |
| outb(value, 0x3C5); |
| |
| static void FB_VGA16Update(_THIS, int numrects, SDL_Rect *rects) |
| { |
| SDL_Surface *screen; |
| int width, height, FBPitch, left, i, j, SRCPitch, phase; |
| register Uint32 m; |
| Uint8 s1, s2, s3, s4; |
| Uint32 *src, *srcPtr; |
| Uint8 *dst, *dstPtr; |
| |
| if ( switched_away ) { |
| return; /* no hardware access */ |
| } |
| |
| screen = this->screen; |
| FBPitch = screen->w >> 3; |
| SRCPitch = screen->pitch >> 2; |
| |
| writeGr(0x03, 0x00); |
| writeGr(0x05, 0x00); |
| writeGr(0x01, 0x00); |
| writeGr(0x08, 0xFF); |
| |
| while(numrects--) { |
| left = rects->x & ~7; |
| width = (rects->w + 7) >> 3; |
| height = rects->h; |
| src = (Uint32*)screen->pixels + (rects->y * SRCPitch) + (left >> 2); |
| dst = (Uint8*)mapped_mem + (rects->y * FBPitch) + (left >> 3); |
| |
| if((phase = (long)dst & 3L)) { |
| phase = 4 - phase; |
| if(phase > width) phase = width; |
| width -= phase; |
| } |
| |
| while(height--) { |
| writeSeq(0x02, 1 << 0); |
| dstPtr = dst; |
| srcPtr = src; |
| i = width; |
| j = phase; |
| while(j--) { |
| m = (srcPtr[1] & 0x01010101) | ((srcPtr[0] & 0x01010101) << 4); |
| *dstPtr++ = (m >> 24) | (m >> 15) | (m >> 6) | (m << 3); |
| srcPtr += 2; |
| } |
| while(i >= 4) { |
| m = (srcPtr[1] & 0x01010101) | ((srcPtr[0] & 0x01010101) << 4); |
| s1 = (m >> 24) | (m >> 15) | (m >> 6) | (m << 3); |
| m = (srcPtr[3] & 0x01010101) | ((srcPtr[2] & 0x01010101) << 4); |
| s2 = (m >> 24) | (m >> 15) | (m >> 6) | (m << 3); |
| m = (srcPtr[5] & 0x01010101) | ((srcPtr[4] & 0x01010101) << 4); |
| s3 = (m >> 24) | (m >> 15) | (m >> 6) | (m << 3); |
| m = (srcPtr[7] & 0x01010101) | ((srcPtr[6] & 0x01010101) << 4); |
| s4 = (m >> 24) | (m >> 15) | (m >> 6) | (m << 3); |
| *((Uint32*)dstPtr) = s1 | (s2 << 8) | (s3 << 16) | (s4 << 24); |
| srcPtr += 8; |
| dstPtr += 4; |
| i -= 4; |
| } |
| while(i--) { |
| m = (srcPtr[1] & 0x01010101) | ((srcPtr[0] & 0x01010101) << 4); |
| *dstPtr++ = (m >> 24) | (m >> 15) | (m >> 6) | (m << 3); |
| srcPtr += 2; |
| } |
| |
| writeSeq(0x02, 1 << 1); |
| dstPtr = dst; |
| srcPtr = src; |
| i = width; |
| j = phase; |
| while(j--) { |
| m = (srcPtr[1] & 0x02020202) | ((srcPtr[0] & 0x02020202) << 4); |
| *dstPtr++ = (m >> 25) | (m >> 16) | (m >> 7) | (m << 2); |
| srcPtr += 2; |
| } |
| while(i >= 4) { |
| m = (srcPtr[1] & 0x02020202) | ((srcPtr[0] & 0x02020202) << 4); |
| s1 = (m >> 25) | (m >> 16) | (m >> 7) | (m << 2); |
| m = (srcPtr[3] & 0x02020202) | ((srcPtr[2] & 0x02020202) << 4); |
| s2 = (m >> 25) | (m >> 16) | (m >> 7) | (m << 2); |
| m = (srcPtr[5] & 0x02020202) | ((srcPtr[4] & 0x02020202) << 4); |
| s3 = (m >> 25) | (m >> 16) | (m >> 7) | (m << 2); |
| m = (srcPtr[7] & 0x02020202) | ((srcPtr[6] & 0x02020202) << 4); |
| s4 = (m >> 25) | (m >> 16) | (m >> 7) | (m << 2); |
| *((Uint32*)dstPtr) = s1 | (s2 << 8) | (s3 << 16) | (s4 << 24); |
| srcPtr += 8; |
| dstPtr += 4; |
| i -= 4; |
| } |
| while(i--) { |
| m = (srcPtr[1] & 0x02020202) | ((srcPtr[0] & 0x02020202) << 4); |
| *dstPtr++ = (m >> 25) | (m >> 16) | (m >> 7) | (m << 2); |
| srcPtr += 2; |
| } |
| |
| writeSeq(0x02, 1 << 2); |
| dstPtr = dst; |
| srcPtr = src; |
| i = width; |
| j = phase; |
| while(j--) { |
| m = (srcPtr[1] & 0x04040404) | ((srcPtr[0] & 0x04040404) << 4); |
| *dstPtr++ = (m >> 26) | (m >> 17) | (m >> 8) | (m << 1); |
| srcPtr += 2; |
| } |
| while(i >= 4) { |
| m = (srcPtr[1] & 0x04040404) | ((srcPtr[0] & 0x04040404) << 4); |
| s1 = (m >> 26) | (m >> 17) | (m >> 8) | (m << 1); |
| m = (srcPtr[3] & 0x04040404) | ((srcPtr[2] & 0x04040404) << 4); |
| s2 = (m >> 26) | (m >> 17) | (m >> 8) | (m << 1); |
| m = (srcPtr[5] & 0x04040404) | ((srcPtr[4] & 0x04040404) << 4); |
| s3 = (m >> 26) | (m >> 17) | (m >> 8) | (m << 1); |
| m = (srcPtr[7] & 0x04040404) | ((srcPtr[6] & 0x04040404) << 4); |
| s4 = (m >> 26) | (m >> 17) | (m >> 8) | (m << 1); |
| *((Uint32*)dstPtr) = s1 | (s2 << 8) | (s3 << 16) | (s4 << 24); |
| srcPtr += 8; |
| dstPtr += 4; |
| i -= 4; |
| } |
| while(i--) { |
| m = (srcPtr[1] & 0x04040404) | ((srcPtr[0] & 0x04040404) << 4); |
| *dstPtr++ = (m >> 26) | (m >> 17) | (m >> 8) | (m << 1); |
| srcPtr += 2; |
| } |
| |
| writeSeq(0x02, 1 << 3); |
| dstPtr = dst; |
| srcPtr = src; |
| i = width; |
| j = phase; |
| while(j--) { |
| m = (srcPtr[1] & 0x08080808) | ((srcPtr[0] & 0x08080808) << 4); |
| *dstPtr++ = (m >> 27) | (m >> 18) | (m >> 9) | m; |
| srcPtr += 2; |
| } |
| while(i >= 4) { |
| m = (srcPtr[1] & 0x08080808) | ((srcPtr[0] & 0x08080808) << 4); |
| s1 = (m >> 27) | (m >> 18) | (m >> 9) | m; |
| m = (srcPtr[3] & 0x08080808) | ((srcPtr[2] & 0x08080808) << 4); |
| s2 = (m >> 27) | (m >> 18) | (m >> 9) | m; |
| m = (srcPtr[5] & 0x08080808) | ((srcPtr[4] & 0x08080808) << 4); |
| s3 = (m >> 27) | (m >> 18) | (m >> 9) | m; |
| m = (srcPtr[7] & 0x08080808) | ((srcPtr[6] & 0x08080808) << 4); |
| s4 = (m >> 27) | (m >> 18) | (m >> 9) | m; |
| *((Uint32*)dstPtr) = s1 | (s2 << 8) | (s3 << 16) | (s4 << 24); |
| srcPtr += 8; |
| dstPtr += 4; |
| i -= 4; |
| } |
| while(i--) { |
| m = (srcPtr[1] & 0x08080808) | ((srcPtr[0] & 0x08080808) << 4); |
| *dstPtr++ = (m >> 27) | (m >> 18) | (m >> 9) | m; |
| srcPtr += 2; |
| } |
| |
| dst += FBPitch; |
| src += SRCPitch; |
| } |
| rects++; |
| } |
| } |
| #endif /* VGA16_FBCON_SUPPORT */ |
| |
| void FB_SavePaletteTo(_THIS, int palette_len, __u16 *area) |
| { |
| struct fb_cmap cmap; |
| |
| cmap.start = 0; |
| cmap.len = palette_len; |
| cmap.red = &area[0*palette_len]; |
| cmap.green = &area[1*palette_len]; |
| cmap.blue = &area[2*palette_len]; |
| cmap.transp = NULL; |
| ioctl(console_fd, FBIOGETCMAP, &cmap); |
| } |
| |
| void FB_RestorePaletteFrom(_THIS, int palette_len, __u16 *area) |
| { |
| struct fb_cmap cmap; |
| |
| cmap.start = 0; |
| cmap.len = palette_len; |
| cmap.red = &area[0*palette_len]; |
| cmap.green = &area[1*palette_len]; |
| cmap.blue = &area[2*palette_len]; |
| cmap.transp = NULL; |
| ioctl(console_fd, FBIOPUTCMAP, &cmap); |
| } |
| |
| static void FB_SavePalette(_THIS, struct fb_fix_screeninfo *finfo, |
| struct fb_var_screeninfo *vinfo) |
| { |
| int i; |
| |
| /* Save hardware palette, if needed */ |
| if ( finfo->visual == FB_VISUAL_PSEUDOCOLOR ) { |
| saved_cmaplen = 1<<vinfo->bits_per_pixel; |
| saved_cmap=(__u16 *)SDL_malloc(3*saved_cmaplen*sizeof(*saved_cmap)); |
| if ( saved_cmap != NULL ) { |
| FB_SavePaletteTo(this, saved_cmaplen, saved_cmap); |
| } |
| } |
| |
| /* Added support for FB_VISUAL_DIRECTCOLOR. |
| With this mode pixel information is passed through the palette... |
| Neat fading and gamma correction effects can be had by simply |
| fooling around with the palette instead of changing the pixel |
| values themselves... Very neat! |
| |
| Adam Meyerowitz 1/19/2000 |
| ameyerow@optonline.com |
| */ |
| if ( finfo->visual == FB_VISUAL_DIRECTCOLOR ) { |
| __u16 new_entries[3*256]; |
| |
| /* Save the colormap */ |
| saved_cmaplen = 256; |
| saved_cmap=(__u16 *)SDL_malloc(3*saved_cmaplen*sizeof(*saved_cmap)); |
| if ( saved_cmap != NULL ) { |
| FB_SavePaletteTo(this, saved_cmaplen, saved_cmap); |
| } |
| |
| /* Allocate new identity colormap */ |
| for ( i=0; i<256; ++i ) { |
| new_entries[(0*256)+i] = |
| new_entries[(1*256)+i] = |
| new_entries[(2*256)+i] = (i<<8)|i; |
| } |
| FB_RestorePaletteFrom(this, 256, new_entries); |
| } |
| } |
| |
| static void FB_RestorePalette(_THIS) |
| { |
| /* Restore the original palette */ |
| if ( saved_cmap ) { |
| FB_RestorePaletteFrom(this, saved_cmaplen, saved_cmap); |
| SDL_free(saved_cmap); |
| saved_cmap = NULL; |
| } |
| } |
| |
| static int FB_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) |
| { |
| int i; |
| __u16 r[256]; |
| __u16 g[256]; |
| __u16 b[256]; |
| struct fb_cmap cmap; |
| |
| /* Set up the colormap */ |
| for (i = 0; i < ncolors; i++) { |
| r[i] = colors[i].r << 8; |
| g[i] = colors[i].g << 8; |
| b[i] = colors[i].b << 8; |
| } |
| cmap.start = firstcolor; |
| cmap.len = ncolors; |
| cmap.red = r; |
| cmap.green = g; |
| cmap.blue = b; |
| cmap.transp = NULL; |
| |
| if( (ioctl(console_fd, FBIOPUTCMAP, &cmap) < 0) || |
| !(this->screen->flags & SDL_HWPALETTE) ) { |
| colors = this->screen->format->palette->colors; |
| ncolors = this->screen->format->palette->ncolors; |
| cmap.start = 0; |
| cmap.len = ncolors; |
| SDL_memset(r, 0, sizeof(r)); |
| SDL_memset(g, 0, sizeof(g)); |
| SDL_memset(b, 0, sizeof(b)); |
| if ( ioctl(console_fd, FBIOGETCMAP, &cmap) == 0 ) { |
| for ( i=ncolors-1; i>=0; --i ) { |
| colors[i].r = (r[i]>>8); |
| colors[i].g = (g[i]>>8); |
| colors[i].b = (b[i]>>8); |
| } |
| } |
| return(0); |
| } |
| return(1); |
| } |
| |
| /* Note: If we are terminated, this could be called in the middle of |
| another SDL video routine -- notably UpdateRects. |
| */ |
| static void FB_VideoQuit(_THIS) |
| { |
| int i, j; |
| |
| if ( this->screen ) { |
| /* Clear screen and tell SDL not to free the pixels */ |
| |
| const char *dontClearPixels = SDL_getenv("SDL_FBCON_DONT_CLEAR"); |
| |
| /* If the framebuffer is not to be cleared, make sure that we won't |
| * display the previous frame when disabling double buffering. */ |
| if ( dontClearPixels && flip_page == 0 ) { |
| SDL_memcpy(flip_address[0], flip_address[1], this->screen->pitch * this->screen->h); |
| } |
| |
| if ( !dontClearPixels && this->screen->pixels && FB_InGraphicsMode(this) ) { |
| #if defined(__powerpc__) || defined(__ia64__) /* SIGBUS when using SDL_memset() ?? */ |
| Uint8 *rowp = (Uint8 *)this->screen->pixels; |
| int left = this->screen->pitch*this->screen->h; |
| while ( left-- ) { *rowp++ = 0; } |
| #else |
| SDL_memset(this->screen->pixels,0,this->screen->h*this->screen->pitch); |
| #endif |
| } |
| /* This test fails when using the VGA16 shadow memory */ |
| if ( ((char *)this->screen->pixels >= mapped_mem) && |
| ((char *)this->screen->pixels < (mapped_mem+mapped_memlen)) ) { |
| this->screen->pixels = NULL; |
| } |
| } |
| |
| /* Clear the lock mutex */ |
| if ( hw_lock ) { |
| SDL_DestroyMutex(hw_lock); |
| hw_lock = NULL; |
| } |
| |
| /* Clean up defined video modes */ |
| 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; |
| } |
| } |
| |
| /* Clean up the memory bucket list */ |
| FB_FreeHWSurfaces(this); |
| |
| /* Close console and input file descriptors */ |
| if ( console_fd > 0 ) { |
| /* Unmap the video framebuffer and I/O registers */ |
| if ( mapped_mem ) { |
| munmap(mapped_mem, mapped_memlen); |
| mapped_mem = NULL; |
| } |
| if ( mapped_io ) { |
| munmap(mapped_io, mapped_iolen); |
| mapped_io = NULL; |
| } |
| |
| /* Restore the original video mode and palette */ |
| if ( FB_InGraphicsMode(this) ) { |
| FB_RestorePalette(this); |
| ioctl(console_fd, FBIOPUT_VSCREENINFO, &saved_vinfo); |
| } |
| |
| /* We're all done with the framebuffer */ |
| close(console_fd); |
| console_fd = -1; |
| } |
| FB_CloseMouse(this); |
| FB_CloseKeyboard(this); |
| } |