OpenWrt – Rev 1
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/******************************************************************************
* fbtest - fbtest.c
* test program for the tuxbox-framebuffer device
* tests all GTX/eNX supported modes
*
* (c) 2003 Carsten Juttner (carjay@gmx.net)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* The Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
******************************************************************************
* $Id: fbtest.c,v 1.5 2005/01/14 23:14:41 carjay Exp $
******************************************************************************/
// TODO: - should restore the colour map and mode to what it was before
// - is colour map handled correctly?
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <linux/fb.h>
#define FBDEV "/dev/fb0"
struct vidsize{
int width;
int height;
};
static
const struct vidsize vidsizetable[]={ // all supported sizes
{720,576},{720,480},{720,288},{720,240},
{640,576},{640,480},{640,288},{640,240},
{360,576},{360,480},{360,288},{360,240},
{320,576},{320,480},{320,288},{320,240}
};
#define VIDSIZENUM (sizeof(vidsizetable)/sizeof(struct vidsize))
enum pixenum{ // keep in sync with pixname !
CLUT4=0,
CLUT8,
RGB565,
ARGB1555,
ARGB
};
const char *pixname[] = {
"CLUT4",
"CLUT8",
"RGB565",
"ARGB1555",
"ARGB"
};
struct pixelformat{
char *name;
struct fb_bitfield red;
struct fb_bitfield green;
struct fb_bitfield blue;
struct fb_bitfield transp;
char bpp;
char pixenum;
};
static // so far these are all modes supported by the eNX (only partially by GTX)
const struct pixelformat pixelformattable[] = {
{ .name = "CLUT4 ARGB8888", // CLUT4 (ARGB8888)
.bpp = 4, .pixenum = CLUT4,
.red = { .offset = 0, .length=8, .msb_right =0 },
.green = { .offset = 0, .length=8, .msb_right =0 },
.blue = { .offset = 0, .length=8, .msb_right =0 },
.transp= { .offset = 0, .length=8, .msb_right =0 }
},
{ .name = "CLUT4 ARGB1555", // CLUT4 (ARGB1555)
.bpp = 4, .pixenum = CLUT4,
.red = { .offset = 0, .length=5, .msb_right =0 },
.green = { .offset = 0, .length=5, .msb_right =0 },
.blue = { .offset = 0, .length=5, .msb_right =0 },
.transp= { .offset = 0, .length=1, .msb_right =0 }
},
{ .name = "CLUT8 ARGB8888", // CLUT8 (ARGB8888)
.bpp = 8, .pixenum = CLUT8,
.red = { .offset = 0, .length=8, .msb_right =0 },
.green = { .offset = 0, .length=8, .msb_right =0 },
.blue = { .offset = 0, .length=8, .msb_right =0 },
.transp= { .offset = 0, .length=8, .msb_right =0 }
},
{ .name = "CLUT8 ARGB1555", // CLUT8 (ARGB1555)
.bpp = 8, .pixenum = CLUT8,
.red = { .offset = 0, .length=5, .msb_right =0 },
.green = { .offset = 0, .length=5, .msb_right =0 },
.blue = { .offset = 0, .length=5, .msb_right =0 },
.transp= { .offset = 0, .length=1, .msb_right =0 }
},
{ .name = "ARGB1555", // ARGB1555
.bpp = 16, .pixenum = ARGB1555,
.red = { .offset = 10, .length=5, .msb_right =0 },
.green = { .offset = 5, .length=5, .msb_right =0 },
.blue = { .offset = 0, .length=5, .msb_right =0 },
.transp= { .offset = 15, .length=1, .msb_right =0 }
},
{ .name = "RGB565", // RGB565
.bpp = 16, .pixenum = RGB565,
.red = { .offset = 11, .length=5, .msb_right =0 },
.green = { .offset = 5, .length=6, .msb_right =0 },
.blue = { .offset = 0, .length=5, .msb_right =0 },
.transp= { .offset = 0, .length=0, .msb_right =0 }
},
{ .name = "ARGB", // 32 f*cking bits, the real McCoy :)
.bpp = 32, .pixenum = ARGB,
.red = { .offset = 16, .length=8, .msb_right =0 },
.green = { .offset = 8, .length=8, .msb_right =0 },
.blue = { .offset = 0, .length=8, .msb_right =0 },
.transp= { .offset = 24, .length=8, .msb_right =0 }
}
};
#define PIXELFORMATNUM (sizeof(pixelformattable)/sizeof(struct pixelformat))
struct colour {
__u16 r;
__u16 g;
__u16 b;
__u16 a;
};
static
struct colour colourtable[] = {
{.r =0xffff, .g = 0xffff, .b=0xffff, .a=0xffff}, // fully transparent white
{.r =0xffff, .g = 0x0000, .b=0x0000, .a=0x0000}, // red
{.r =0x0000, .g = 0xffff, .b=0x0000, .a=0x0000}, // green
{.r =0x0000, .g = 0x0000, .b=0xffff, .a=0x0000}, // blue
{.r =0x0000, .g = 0x0000, .b=0x0000, .a=0x0000} // black
};
#define COLOURNUM (sizeof(colourtable)/sizeof(struct colour))
struct rect{
int x;
int y;
int width;
int height;
const struct colour *col;
};
struct pixel{ // up to 32 bits of pixel information
char byte[4];
};
void col2pixel (struct pixel *pix, const struct pixelformat *pixf, const struct colour *col){
switch (pixf->pixenum){
case RGB565:
pix->byte[0]=(col->r&0xf8)|(col->g&0xfc)>>5;
pix->byte[1]=(col->g&0xfc)<<3|(col->b&0xf8)>>3;
break;
case ARGB1555:
pix->byte[0]=(col->a&0x80)|(col->r&0xf8)>>1|(col->g&0xf8)>>6;
pix->byte[1]=(col->g&0xf8)<<2|(col->b&0xf8)>>3;
break;
case ARGB:
pix->byte[0]=col->a;
pix->byte[1]=col->r;
pix->byte[2]=col->g;
pix->byte[3]=col->b;
break;
default:
printf ("unknown pixelformat\n");
exit(1);
}
}
int setmode(int fbd, const struct pixelformat *pixf,const struct vidsize *vids){
struct fb_var_screeninfo var;
int stat;
stat = ioctl (fbd, FBIOGET_VSCREENINFO,&var);
if (stat<0) return -2;
var.xres= vids->width;
var.xres_virtual = vids->width;
var.yres= vids->height;
var.yres_virtual = vids->height;
var.bits_per_pixel = pixf->bpp;
var.red = pixf->red;
var.green = pixf->green;
var.blue = pixf->blue;
var.transp = pixf->transp;
stat = ioctl (fbd, FBIOPUT_VSCREENINFO,&var);
if (stat<0) return -1;
return 0;
}
// unefficient implementation, do NOT use it for your next ego shooter, please :)
// for 4-Bit only rectangles with even width are supported
// CLUT-modes use value of red component as index
void drawrect(void *videoram, struct rect *r, const struct pixelformat *pixf, const struct vidsize *vids){
int x,y,corwidth, bpp = 0, tocopy = 1;
struct pixel pix;
unsigned char *pmem = videoram;
corwidth = r->width; // actually only "corrected" for 4 Bit
if (pixf->pixenum!=CLUT4&&pixf->pixenum!=CLUT8){
switch (pixf->pixenum){
case ARGB1555:
case RGB565:
bpp = 16;
tocopy = 2;
break;
case ARGB:
bpp = 32;
tocopy = 4;
break;
default:
printf ("drawrect: unknown pixelformat(%d) bpp:%d\n",pixf->pixenum,pixf->bpp);
exit(1);
}
col2pixel(&pix,pixf,r->col);
} else {
switch (pixf->pixenum){ // CLUT = Colour LookUp Table (palette)
case CLUT4: // take red value as index in this case
pix.byte[0]=(r->col->r)<<4|(r->col->r&0xf); // slightly cryptic... "rect->colour->red"
corwidth>>=1; // we copy bytes
bpp=4;
tocopy=1;
break;
case CLUT8:
pix.byte[0]=(r->col->r&0xff);
bpp=8;
tocopy=1;
break;
}
}
pmem=videoram+((((r->y*vids->width)+r->x)*bpp)>>3);
for (y=0;y<r->height;y++){
int offset = 0;
for (x=0;x<corwidth;x++){
memcpy (pmem+offset,pix.byte,tocopy);
offset+=tocopy;
}
pmem +=((vids->width*bpp)>>3); // skip one whole line, actually should be taken from "fix-info"
}
}
// create quick little test image, 4 colours from table
void draw4field(void *videoram, const struct pixelformat *pixf, const struct vidsize *vids){
struct rect r;
struct colour c;
int height, width;
c.r = 1; // only used for the indexed modes, r is taken as index
height = vids->height;
width = vids->width;
r.height = height>>1;
r.width = width>>1;
r.x = 0; r.y = 0;
if (pixf->pixenum==CLUT4||pixf->pixenum==CLUT8) r.col = &c;
else r.col = &colourtable[1];
drawrect (videoram, &r, pixf, vids);
r.x = width/2; r.y = 0;
if (pixf->pixenum==CLUT4||pixf->pixenum==CLUT8) c.r = 2;
else r.col = &colourtable[2];
drawrect (videoram, &r, pixf, vids);
r.x = 0; r.y = height/2;
if (pixf->pixenum==CLUT4||pixf->pixenum==CLUT8) c.r = 3;
else r.col = &colourtable[3];
drawrect (videoram, &r, pixf, vids);
r.x = width/2; r.y = height/2;
if (pixf->pixenum==CLUT4||pixf->pixenum==CLUT8) c.r = 0;
else r.col = &colourtable[0];
drawrect (videoram, &r, pixf, vids);
}
void usage(char *name){
printf ("Usage: %s [options]\n"
"Options: -f<pixelformat>\n"
" where format is one of:\n"
" CLUT4,CLUT8,ARGB1555,RGB565,ARGB\n"
" -s<width>x<heigth>\n"
" where width is either 720,640,360,320\n"
" and height is either 288,240,480,576\n"
" -n\n"
" disables clearing the framebuffer after drawing\n"
" the testimage. This can be useful to keep the last\n"
" drawn image onscreen.\n"
"\nExample: %s -fRGB322\n",name,name);
exit(0);
}
int main (int argc,char **argv){
struct fb_fix_screeninfo fix;
struct fb_var_screeninfo var;
struct fb_cmap cmap;
struct rect r;
int fbd;
unsigned char *pfb;
int stat;
int optchar,fmode=-1,smode=-1,clear=1;
int i_cmap,i_size,i_pix;
extern char *optarg;
if (argc!=0&&argc>4) usage(argv[0]);
while ( (optchar = getopt (argc,argv,"f:s:n"))!= -1){
int i,height,width;
switch (optchar){
case 'f':
for (i=0;i<(sizeof(pixname)/sizeof(char*));i++){
if (!strncmp (optarg,pixname[i],strlen(pixname[i]))){
fmode=i;
printf ("displaying only %s-modes\n",pixname[i]);
break;
}
}
if (fmode==-1){
printf ("unknown pixelformat\n");
exit(0);
}
break;
case 's':
if (sscanf (optarg,"%dx%d",&width,&height)!=2){
printf ("parsing size failed\n");
exit(0);
} else {
printf ("requested size %dx%d\n",width,height);
for (i=0;i<VIDSIZENUM;i++){
if (vidsizetable[i].width == width &&
vidsizetable[i].height == height){
smode = i;
break;
}
}
if (smode==-1){
printf ("this size is not supported\n");
exit(0);
}
}
break;
case 'n':
clear = 0;
printf ("clearing framebuffer after drawing is disabled\n");
break;
case '?':
usage (argv[0]);
}
}
fbd = open (FBDEV, O_RDWR);
if (fbd<0){
perror ("Error opening framebuffer device");
return 1;
}
stat = ioctl (fbd, FBIOGET_FSCREENINFO,&fix);
if (stat<0){
perror ("Error getting fix screeninfo");
return 1;
}
stat = ioctl (fbd, FBIOGET_VSCREENINFO,&var);
if (stat<0){
perror ("Error getting var screeninfo");
return 1;
}
stat = ioctl (fbd, FBIOPUT_VSCREENINFO,&var);
if (stat<0){
perror ("Error setting mode");
return 1;
}
pfb = mmap (0, fix.smem_len, PROT_READ|PROT_WRITE, MAP_SHARED, fbd, 0);
if (pfb == MAP_FAILED){
perror ("Error mmap'ing framebuffer device");
return 1;
}
// iterate over all modes
for (i_pix=0;i_pix<PIXELFORMATNUM;i_pix++){
if (fmode!=-1 && pixelformattable[i_pix].pixenum != fmode) continue;
printf ("testing: %s",pixelformattable[i_pix].name);
printf (" for sizes: \n");
for (i_size=0;i_size<VIDSIZENUM;i_size++){
if (smode!=-1 && i_size!=smode) continue;
printf ("%dx%d ",vidsizetable[i_size].width,vidsizetable[i_size].height);
fflush(stdout);
if ((i_size%4)==3) printf ("\n");
// try to set mode
stat = setmode(fbd,&pixelformattable[i_pix],&vidsizetable[i_size]);
if (stat==-2) perror ("fbtest: could not get fb_var-screeninfo from fb-device");
else if (stat==-1){
printf ("\nCould not set mode %s (%dx%d), possible reasons:\n"
"- you have a GTX (soz m8)\n"
"- your configuration does not have enough graphics RAM\n"
"- you found a bug\n"
"choose your poison accordingly...\n",
pixelformattable[i_pix].name,vidsizetable[i_size].width,vidsizetable[i_size].height);
continue;
}
// fill cmap;
cmap.len = 1;
if ((pixelformattable[i_pix].bpp==4)||
((pixelformattable[i_pix].bpp==8)&&(pixelformattable[i_pix].red.length!=3))){
for (i_cmap=0;i_cmap<COLOURNUM;i_cmap++){
cmap.start=i_cmap;
cmap.red=&colourtable[i_cmap].r;
cmap.green=&colourtable[i_cmap].g;
cmap.blue=&colourtable[i_cmap].b;
cmap.transp=&colourtable[i_cmap].a;
stat = ioctl (fbd, FBIOPUTCMAP, &cmap);
if (stat<0) printf ("setting colourmap failed\n");
}
}
// create the test image
draw4field(pfb,&pixelformattable[i_pix],&vidsizetable[i_size]);
usleep (500000);
// clear screen
if (clear){
r.x=r.y=0;r.width = vidsizetable[i_size].width; r.height = vidsizetable[i_size].height;
r.col = &colourtable[4];
drawrect(pfb,&r,&pixelformattable[i_pix],&vidsizetable[i_size]);
}
}
printf ("\n");
}
stat = munmap (pfb,fix.smem_len);
if (stat<0){
perror ("Error munmap'ing framebuffer device");
return 1;
}
close (fbd);
return 0;
}