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SDL_fbvideo.c
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/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 Sam Lantinga
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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.
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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.
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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
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Sam Lantinga
slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/* Framebuffer console based SDL video driver implementation.
*/
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
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#ifndef HAVE_GETPAGESIZE
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#include <asm/page.h> /* For definition of PAGE_SIZE */
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#endif
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#include <linux/vt.h>
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#include "SDL_video.h"
#include "SDL_mouse.h"
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#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_events_c.h"
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#include "SDL_fbvideo.h"
#include "SDL_fbmouse_c.h"
#include "SDL_fbevents_c.h"
#include "SDL_fb3dfx.h"
#include "SDL_fbmatrox.h"
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#include "SDL_fbriva.h"
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/*#define FBCON_DEBUG*/
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#if defined(i386) && defined(FB_TYPE_VGA_PLANES)
#define VGA16_FBCON_SUPPORT
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#include <sys/io.h> /* For ioperm() */
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#ifndef FB_AUX_VGA_PLANES_VGA4
#define FB_AUX_VGA_PLANES_VGA4 0
#endif
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/*
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static inline void outb (unsigned char value, unsigned short port)
{
__asm__ __volatile__ ("outb %b0,%w1"::"a" (value), "Nd" (port));
}
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*/
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#endif /* FB_TYPE_VGA_PLANES */
/* A list of video resolutions that we query for (sorted largest to smallest) */
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static const SDL_Rect checkres[] = {
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{ 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 */
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{ 0, 0, 720, 576 }, /* PAL */
{ 0, 0, 720, 480 }, /* NTSC */
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{ 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 }
};
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static const struct {
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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
};
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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))
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/* 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 */
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static int FB_InitHWSurfaces(_THIS, SDL_Surface *screen, char *base, int size);
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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);
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static void FB_WaitIdle(_THIS);
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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);
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/* Shadow buffer functions */
static FB_bitBlit FB_blit16;
static FB_bitBlit FB_blit16blocked;
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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
}
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/* 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);
}
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return ret;
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}
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/* FB driver bootstrap functions */
static int FB_Available(void)
{
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int console = -1;
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/* 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;
}
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}
return(console >= 0);
}
static void FB_DeleteDevice(SDL_VideoDevice *device)
{
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SDL_free(device->hidden);
SDL_free(device);
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}
static SDL_VideoDevice *FB_CreateDevice(int devindex)
{
SDL_VideoDevice *this;
/* Initialize all variables that we clean on shutdown */
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this = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice));
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if ( this ) {
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SDL_memset(this, 0, (sizeof *this));
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this->hidden = (struct SDL_PrivateVideoData *)
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SDL_malloc((sizeof *this->hidden));
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}
if ( (this == NULL) || (this->hidden == NULL) ) {
SDL_OutOfMemory();
if ( this ) {
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SDL_free(this);
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}
return(0);
}
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SDL_memset(this->hidden, 0, (sizeof *this->hidden));
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wait_vbl = FB_WaitVBL;
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wait_idle = FB_WaitIdle;
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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
};
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#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
{
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if (!fgets(line,length,f))
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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;
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if (SDL_strncmp(line,"geometry",8)==0)
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break;
}
while(1);
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SDL_sscanf(line, "geometry %d %d %d %d %d", &vinfo->xres, &vinfo->yres,
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&vinfo->xres_virtual, &vinfo->yres_virtual, &vinfo->bits_per_pixel);
if (read_fbmodes_line(f, line, sizeof(line))==0)
return 0;
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SDL_sscanf(line, "timings %d %d %d %d %d %d %d", &vinfo->pixclock,
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&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;
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if (SDL_strncmp(line,"hsync",5)==0) {
SDL_sscanf(line,"hsync %s",option);
if (SDL_strncmp(option,"high",4)==0)
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vinfo->sync |= FB_SYNC_HOR_HIGH_ACT;
}
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else if (SDL_strncmp(line,"vsync",5)==0) {
SDL_sscanf(line,"vsync %s",option);
if (SDL_strncmp(option,"high",4)==0)
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vinfo->sync |= FB_SYNC_VERT_HIGH_ACT;
}
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else if (SDL_strncmp(line,"csync",5)==0) {
SDL_sscanf(line,"csync %s",option);
if (SDL_strncmp(option,"high",4)==0)
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vinfo->sync |= FB_SYNC_COMP_HIGH_ACT;
}
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else if (SDL_strncmp(line,"extsync",5)==0) {
SDL_sscanf(line,"extsync %s",option);
if (SDL_strncmp(option,"true",4)==0)
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vinfo->sync |= FB_SYNC_EXT;
}
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else if (SDL_strncmp(line,"laced",5)==0) {
SDL_sscanf(line,"laced %s",option);
if (SDL_strncmp(option,"true",4)==0)
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vinfo->vmode |= FB_VMODE_INTERLACED;
}
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else if (SDL_strncmp(line,"double",6)==0) {
SDL_sscanf(line,"double %s",option);
if (SDL_strncmp(option,"true",4)==0)
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vinfo->vmode |= FB_VMODE_DOUBLE;
}
}
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while(SDL_strncmp(line,"endmode",7)!=0);
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return 1;
}
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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;
}
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static int FB_AddMode(_THIS, int index, unsigned int w, unsigned int h, int check_timings)
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{
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 */
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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;
}
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}
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if ( !found_timing ) {
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#ifdef FBCON_DEBUG
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fprintf(stderr, "No valid timing line for mode %dx%d\n", w, h);
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#endif
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return(0);
}
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}
/* Set up the new video mode rectangle */
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mode = (SDL_Rect *)SDL_malloc(sizeof *mode);
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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 **)
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SDL_realloc(SDL_modelist[index], (1+next_mode+1)*sizeof(SDL_Rect *));
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if ( SDL_modelist[index] == NULL ) {
SDL_OutOfMemory();
SDL_nummodes[index] = 0;
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SDL_free(mode);
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return(-1);
}
SDL_modelist[index][next_mode] = mode;
SDL_modelist[index][next_mode+1] = NULL;
SDL_nummodes[index]++;
return(0);
}
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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;
}
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static void FB_SortModes(_THIS)
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{
int i;
for ( i=0; i<NUM_MODELISTS; ++i ) {
if ( SDL_nummodes[i] > 0 ) {
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SDL_qsort(SDL_modelist[i], SDL_nummodes[i], sizeof *SDL_modelist[i], cmpmodes);
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}
}
}
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static int FB_VideoInit(_THIS, SDL_PixelFormat *vformat)
{
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const int pagesize = SDL_getpagesize();
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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;
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const char *rotation;
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FILE *modesdb;
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/* Initialize the library */
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SDL_fbdev = SDL_getenv("SDL_FBDEV");
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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);
}
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#if !SDL_THREADS_DISABLED
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/* 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;
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fb_accel = SDL_getenv("SDL_FBACCEL");
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if ( fb_accel ) {
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finfo.accel = SDL_atoi(fb_accel);
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}
}
/* Memory map the device, compensating for buggy PPC mmap() */
mapped_offset = (((long)finfo.smem_start) -
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(((long)finfo.smem_start)&~(pagesize-1)));
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mapped_memlen = finfo.smem_len+mapped_offset;
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mapped_mem = do_mmap(NULL, mapped_memlen,
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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;
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mapped_io = do_mmap(NULL, mapped_iolen, PROT_READ|PROT_WRITE,
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MAP_SHARED, console_fd, mapped_memlen);
if ( mapped_io == (char *)-1 ) {
/* Hmm, failed to memory map I/O registers */
mapped_io = NULL;
}
}
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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;
}
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/* Query for the list of available video modes */
current_index = ((vinfo.bits_per_pixel+7)/8)-1;
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modesdb = fopen(FB_MODES_DB, "r");
for ( i=0; i<NUM_MODELISTS; ++i ) {
SDL_nummodes[i] = 0;
SDL_modelist[i] = NULL;
}
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if ( SDL_getenv("SDL_FB_BROKEN_MODES") != NULL ) {
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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;
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if (rotate == FBCON_ROTATE_CW || rotate == FBCON_ROTATE_CCW) {
w = vinfo.yres;
h = vinfo.xres;
} else {
w = vinfo.xres;
h = vinfo.yres;
}
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/* 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);
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} else {
for ( i=0; i<NUM_MODELISTS; ++i ) {
for ( j=0; j<(sizeof(checkres)/sizeof(checkres[0])); ++j ) {
unsigned int w, h;
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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;
}
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/* See if we are querying for the current mode */
if ( i == current_index ) {
if ( (current_w > w) || (current_h > h) ) {
/* Only check once */
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FB_AddMode(this, i, current_w, current_h, 0);
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current_index = -1;
}
}
if ( FB_CheckMode(this, &vinfo, i, &w, &h) ) {
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FB_AddMode(this, i, w, h, 1);
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}
}
}
}
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this->info.current_w = current_w;
this->info.current_h = current_h;
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this->info.wm_available = 0;
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this->info.hw_available = !shadow_fb;
this->info.video_mem = shadow_fb ? 0 : finfo.smem_len/1024;
/* Fill in our hardware acceleration capabilities */
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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;
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case FB_ACCEL_NV3:
case FB_ACCEL_NV4:
#ifdef FBACCEL_DEBUG
printf("NVidia hardware accelerator!\n");
#endif
FB_RivaAccel(this, finfo.accel);
break;
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default:
#ifdef FBACCEL_DEBUG
printf("Unknown hardware accelerator.\n");
#endif
break;
}
}
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if (shadow_fb) {
shadow_mem = (char *)SDL_malloc(mapped_memlen);
if (shadow_mem == NULL) {
SDL_SetError("No memory for shadow");
return (-1);
}
}
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/* Enable mouse and keyboard support */
if ( FB_OpenKeyboard(this) < 0 ) {
FB_VideoQuit(this);
return(-1);
}
if ( FB_OpenMouse(this) < 0 ) {
const char *sdl_nomouse;
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sdl_nomouse = SDL_getenv("SDL_NOMOUSE");
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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;
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879
FILE *modesdb;
struct fb_var_screeninfo cinfo;
880
881
matched = 0;
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modesdb = fopen(FB_MODES_DB, "r");
if ( modesdb ) {
/* Parse the mode definition file */
while ( read_fbmodes_mode(modesdb, &cinfo) ) {
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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;
}
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matched = 1;
}
}
fclose(modesdb);
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}
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);
}
966
current->format->palette->ncolors = 16;
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/* 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;
988
current->pixels = SDL_malloc(current->h*current->pitch);
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/* 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)
{