package/utils/fbtest/src/fbtest.c

   1 /******************************************************************************
   2  *      fbtest - fbtest.c
   3  *      test program for the tuxbox-framebuffer device
   4  *      tests all GTX/eNX supported modes
   5  *
   6  *      (c) 2003 Carsten Juttner (carjay@gmx.net)
   7  *
   8  *      This program is free software; you can redistribute it and/or modify
   9  *      it under the terms of the GNU General Public License as published by
  10  *      The Free Software Foundation; either version 2 of the License, or
  11  *      (at your option) any later version.
  12  *
  13  *      This program is distributed in the hope that it will be useful,
  14  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *      GNU General Public License for more details.
  17  *
  18  *      You should have received a copy of the GNU General Public License
  19  *      along with this program; if not, write to the Free Software
  20  *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  *
  22  ******************************************************************************
  23  * $Id: fbtest.c,v 1.5 2005/01/14 23:14:41 carjay Exp $
  24  ******************************************************************************/
  25
  26 // TODO: - should restore the colour map and mode to what it was before
  27 //       - is colour map handled correctly?
  28
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <unistd.h>
  32 #include <string.h>
  33
  34 #include <sys/types.h>
  35 #include <sys/stat.h>
  36 #include <sys/ioctl.h>
  37 #include <sys/mman.h>
  38 #include <fcntl.h>
  39
  40 #include <linux/fb.h>
  41
  42 #define FBDEV "/dev/fb0"
  43
  44 struct vidsize{
  45         int width;
  46         int height;
  47 };
  48 static
  49 const struct vidsize vidsizetable[]={   // all supported sizes
  50         {720,576},{720,480},{720,288},{720,240},
  51         {640,576},{640,480},{640,288},{640,240},
  52         {360,576},{360,480},{360,288},{360,240},
  53         {320,576},{320,480},{320,288},{320,240}
  54 };
  55 #define VIDSIZENUM (sizeof(vidsizetable)/sizeof(struct vidsize))
  56
  57 enum pixenum{   // keep in sync with pixname !
  58         CLUT4=0,
  59         CLUT8,
  60         RGB565,
  61         ARGB1555,
  62         ARGB
  63 };
  64 const char *pixname[] = {
  65         "CLUT4",
  66         "CLUT8",
  67         "RGB565",
  68         "ARGB1555",
  69         "ARGB"
  70 };
  71
  72 struct pixelformat{
  73         char *name;
  74         struct fb_bitfield red;
  75         struct fb_bitfield green;
  76         struct fb_bitfield blue;
  77         struct fb_bitfield transp;
  78         char bpp;
  79         char pixenum;
  80 };
  81
  82 static          // so far these are all modes supported by the eNX (only partially by GTX)
  83 const struct pixelformat pixelformattable[] = {
  84         { .name = "CLUT4 ARGB8888",     // CLUT4 (ARGB8888)
  85                 .bpp = 4, .pixenum = CLUT4,
  86                 .red =   { .offset = 0, .length=8, .msb_right =0 },
  87                 .green = { .offset = 0, .length=8, .msb_right =0 },
  88                 .blue =  { .offset = 0, .length=8, .msb_right =0 },
  89                 .transp=  { .offset = 0, .length=8, .msb_right =0 }
  90         },
  91         { .name = "CLUT4 ARGB1555",     // CLUT4 (ARGB1555)
  92                 .bpp = 4, .pixenum = CLUT4,
  93                 .red =   { .offset = 0, .length=5, .msb_right =0 },
  94                 .green = { .offset = 0, .length=5, .msb_right =0 },
  95                 .blue =  { .offset = 0, .length=5, .msb_right =0 },
  96                 .transp=  { .offset = 0, .length=1, .msb_right =0 }
  97         },
  98         { .name = "CLUT8 ARGB8888",     // CLUT8 (ARGB8888)
  99                 .bpp = 8, .pixenum = CLUT8,
 100                 .red =   { .offset = 0, .length=8, .msb_right =0 },
 101                 .green = { .offset = 0, .length=8, .msb_right =0 },
 102                 .blue =  { .offset = 0, .length=8, .msb_right =0 },
 103                 .transp=  { .offset = 0, .length=8, .msb_right =0 }
 104         },
 105         { .name = "CLUT8 ARGB1555",     // CLUT8 (ARGB1555)
 106                 .bpp = 8, .pixenum = CLUT8,
 107                 .red =   { .offset = 0, .length=5, .msb_right =0 },
 108                 .green = { .offset = 0, .length=5, .msb_right =0 },
 109                 .blue =  { .offset = 0, .length=5, .msb_right =0 },
 110                 .transp=  { .offset = 0, .length=1, .msb_right =0 }
 111         },
 112         { .name = "ARGB1555",   // ARGB1555
 113                 .bpp = 16, .pixenum = ARGB1555,
 114                 .red =   { .offset = 10, .length=5, .msb_right =0 },
 115                 .green = { .offset = 5,  .length=5, .msb_right =0 },
 116                 .blue =  { .offset = 0,  .length=5, .msb_right =0 },
 117                 .transp=  { .offset = 15, .length=1, .msb_right =0 }
 118         },
 119         { .name = "RGB565",             // RGB565
 120                 .bpp = 16, .pixenum = RGB565,
 121                 .red =   { .offset = 11, .length=5, .msb_right =0 },
 122                 .green = { .offset = 5,  .length=6, .msb_right =0 },
 123                 .blue =  { .offset = 0,  .length=5, .msb_right =0 },
 124                 .transp=  { .offset = 0,  .length=0, .msb_right =0 }
 125         },
 126         { .name = "ARGB",       // 32 f*cking bits, the real McCoy :)
 127                 .bpp = 32, .pixenum = ARGB,
 128                 .red =   { .offset = 16, .length=8, .msb_right =0 },
 129                 .green = { .offset = 8,  .length=8, .msb_right =0 },
 130                 .blue =  { .offset = 0,  .length=8, .msb_right =0 },
 131                 .transp=  { .offset = 24, .length=8, .msb_right =0 }
 132         }
 133 };
 134 #define PIXELFORMATNUM (sizeof(pixelformattable)/sizeof(struct pixelformat))
 135
 136 struct colour {
 137         __u16 r;
 138         __u16 g;
 139         __u16 b;
 140         __u16 a;
 141 };
 142 static
 143 struct colour colourtable[] = {
 144         {.r =0xffff, .g = 0xffff, .b=0xffff, .a=0xffff},        // fully transparent white
 145         {.r =0xffff, .g = 0x0000, .b=0x0000, .a=0x0000},        // red
 146         {.r =0x0000, .g = 0xffff, .b=0x0000, .a=0x0000},        // green
 147         {.r =0x0000, .g = 0x0000, .b=0xffff, .a=0x0000},        // blue
 148         {.r =0x0000, .g = 0x0000, .b=0x0000, .a=0x0000}         // black
 149 };
 150 #define COLOURNUM (sizeof(colourtable)/sizeof(struct colour))
 151
 152 struct rect{
 153         int x;
 154         int y;
 155         int width;
 156         int height;
 157         const struct colour *col;
 158 };
 159 struct pixel{           // up to 32 bits of pixel information
 160         char byte[4];
 161 };
 162
 163 void col2pixel (struct pixel *pix, const struct pixelformat *pixf, const struct colour *col){
 164         switch (pixf->pixenum){
 165                 case RGB565:
 166                         pix->byte[0]=(col->r&0xf8)|(col->g&0xfc)>>5;
 167                         pix->byte[1]=(col->g&0xfc)<<3|(col->b&0xf8)>>3;
 168                         break;
 169                 case ARGB1555:
 170                         pix->byte[0]=(col->a&0x80)|(col->r&0xf8)>>1|(col->g&0xf8)>>6;
 171                         pix->byte[1]=(col->g&0xf8)<<2|(col->b&0xf8)>>3;
 172                         break;
 173                 case ARGB:
 174                         pix->byte[0]=col->a;
 175                         pix->byte[1]=col->r;
 176                         pix->byte[2]=col->g;
 177                         pix->byte[3]=col->b;
 178                         break;
 179                 default:
 180                         printf ("unknown pixelformat\n");
 181                         exit(1);
 182         }
 183 }
 184
 185 int setmode(int fbd, const struct pixelformat *pixf,const struct vidsize *vids){
 186         struct fb_var_screeninfo var;
 187         int stat;
 188         stat = ioctl (fbd, FBIOGET_VSCREENINFO,&var);
 189         if (stat<0) return -2;
 190
 191         var.xres= vids->width;
 192         var.xres_virtual = vids->width;
 193         var.yres= vids->height;
 194         var.yres_virtual = vids->height;
 195
 196         var.bits_per_pixel = pixf->bpp;
 197         var.red = pixf->red;
 198         var.green = pixf->green;
 199         var.blue = pixf->blue;
 200         var.transp = pixf->transp;
 201
 202         stat = ioctl (fbd, FBIOPUT_VSCREENINFO,&var);
 203         if (stat<0) return -1;
 204         return 0;
 205 }
 206
 207 // unefficient implementation, do NOT use it for your next ego shooter, please :)
 208 // for 4-Bit only rectangles with even width are supported
 209 // CLUT-modes use value of red component as index
 210 void drawrect(void *videoram, struct rect *r, const struct pixelformat *pixf, const struct vidsize *vids){
 211         int x,y,corwidth, bpp = 0, tocopy = 1;
 212         struct pixel pix;
 213         unsigned char *pmem = videoram;
 214         corwidth = r->width;    // actually only "corrected" for 4 Bit
 215
 216         if (pixf->pixenum!=CLUT4&&pixf->pixenum!=CLUT8){
 217                 switch (pixf->pixenum){
 218                         case ARGB1555:
 219                         case RGB565:
 220                                 bpp = 16;
 221                                 tocopy = 2;
 222                                 break;
 223                         case ARGB:
 224                                 bpp = 32;
 225                                 tocopy = 4;
 226                                 break;
 227                         default:
 228                                 printf ("drawrect: unknown pixelformat(%d) bpp:%d\n",pixf->pixenum,pixf->bpp);
 229                                 exit(1);
 230                 }
 231                 col2pixel(&pix,pixf,r->col);
 232         } else {
 233                 switch (pixf->pixenum){ // CLUT = Colour LookUp Table (palette)
 234                         case CLUT4:     // take red value as index in this case
 235                                 pix.byte[0]=(r->col->r)<<4|(r->col->r&0xf);     // slightly cryptic... "rect->colour->red"
 236                                 corwidth>>=1;   // we copy bytes
 237                                 bpp=4;
 238                                 tocopy=1;
 239                                 break;
 240                         case CLUT8:
 241                                 pix.byte[0]=(r->col->r&0xff);
 242                                 bpp=8;
 243                                 tocopy=1;
 244                                 break;
 245                 }
 246         }
 247         pmem=videoram+((((r->y*vids->width)+r->x)*bpp)>>3);
 248         for (y=0;y<r->height;y++){
 249                 int offset = 0;
 250                 for (x=0;x<corwidth;x++){
 251                         memcpy (pmem+offset,pix.byte,tocopy);
 252                         offset+=tocopy;
 253                 }
 254                 pmem +=((vids->width*bpp)>>3);  // skip one whole line, actually should be taken from "fix-info"
 255         }
 256 }
 257
 258 // create quick little test image, 4 colours from table
 259 void draw4field(void *videoram, const struct pixelformat *pixf, const struct vidsize *vids){
 260         struct rect r;
 261         struct colour c;
 262         int height, width;
 263         c.r = 1;        // only used for the indexed modes, r is taken as index
 264         height = vids->height;
 265         width = vids->width;
 266
 267         r.height = height>>1;
 268         r.width = width>>1;
 269         r.x = 0;        r.y = 0;
 270         if (pixf->pixenum==CLUT4||pixf->pixenum==CLUT8) r.col = &c;
 271         else r.col = &colourtable[1];
 272         drawrect (videoram, &r, pixf, vids);
 273
 274         r.x = width/2;  r.y = 0;
 275         if (pixf->pixenum==CLUT4||pixf->pixenum==CLUT8) c.r = 2;
 276         else r.col = &colourtable[2];
 277         drawrect (videoram, &r, pixf, vids);
 278
 279         r.x = 0;        r.y = height/2;
 280         if (pixf->pixenum==CLUT4||pixf->pixenum==CLUT8) c.r = 3;
 281         else r.col = &colourtable[3];
 282         drawrect (videoram, &r, pixf, vids);
 283
 284         r.x = width/2;  r.y = height/2;
 285         if (pixf->pixenum==CLUT4||pixf->pixenum==CLUT8) c.r = 0;
 286         else r.col = &colourtable[0];
 287         drawrect (videoram, &r, pixf, vids);
 288 }
 289
 290 void usage(char *name){
 291         printf ("Usage: %s [options]\n"
 292                 "Options: -f<pixelformat>\n"
 293                 "            where format is one of:\n"
 294                 "              CLUT4,CLUT8,ARGB1555,RGB565,ARGB\n"
 295                 "         -s<width>x<heigth>\n"
 296                 "            where width is either 720,640,360,320\n"
 297                 "                  and height is either 288,240,480,576\n"
 298                 "         -n\n"
 299                 "            disables clearing the framebuffer after drawing\n"
 300                 "            the testimage. This can be useful to keep the last\n"
 301                 "            drawn image onscreen.\n"
 302                 "\nExample: %s -fRGB322\n",name,name);
 303         exit(0);
 304 }
 305
 306 int main (int argc,char **argv){
 307         struct fb_fix_screeninfo fix;
 308         struct fb_var_screeninfo var;
 309         struct fb_cmap cmap;
 310         struct rect r;
 311         int fbd;
 312         unsigned char *pfb;
 313         int stat;
 314         int optchar,fmode=-1,smode=-1,clear=1;
 315         int i_cmap,i_size,i_pix;
 316         extern char *optarg;
 317
 318         if (argc!=0&&argc>4) usage(argv[0]);
 319         while ( (optchar = getopt (argc,argv,"f:s:n"))!= -1){
 320                 int i,height,width;
 321                 switch (optchar){
 322                         case 'f':
 323                                 for (i=0;i<(sizeof(pixname)/sizeof(char*));i++){
 324                                         if (!strncmp (optarg,pixname[i],strlen(pixname[i]))){
 325                                                 fmode=i;
 326                                                 printf ("displaying only %s-modes\n",pixname[i]);
 327                                                 break;
 328                                         }
 329                                 }
 330                                 if (fmode==-1){
 331                                         printf ("unknown pixelformat\n");
 332                                         exit(0);
 333                                 }
 334                                 break;
 335                         case 's':
 336                                 if (sscanf (optarg,"%dx%d",&width,&height)!=2){
 337                                         printf ("parsing size failed\n");
 338                                         exit(0);
 339                                 } else {
 340                                         printf ("requested size %dx%d\n",width,height);
 341                                         for (i=0;i<VIDSIZENUM;i++){
 342                                                 if (vidsizetable[i].width == width &&
 343                                                         vidsizetable[i].height == height){
 344                                                         smode = i;
 345                                                         break;
 346                                                 }
 347                                         }
 348                                         if (smode==-1){
 349                                                 printf ("this size is not supported\n");
 350                                                 exit(0);
 351                                         }
 352                                 }
 353                                 break;
 354                         case 'n':
 355                                 clear = 0;
 356                                 printf ("clearing framebuffer after drawing is disabled\n");
 357                                 break;
 358                         case '?':
 359                                 usage (argv[0]);
 360                 }
 361         }
 362
 363         fbd = open (FBDEV, O_RDWR);
 364         if (fbd<0){
 365                 perror ("Error opening framebuffer device");
 366                 return 1;
 367         }
 368         stat = ioctl (fbd, FBIOGET_FSCREENINFO,&fix);
 369         if (stat<0){
 370                 perror ("Error getting fix screeninfo");
 371                 return 1;
 372         }
 373         stat = ioctl (fbd, FBIOGET_VSCREENINFO,&var);
 374         if (stat<0){
 375                 perror ("Error getting var screeninfo");
 376                 return 1;
 377         }
 378         stat = ioctl (fbd, FBIOPUT_VSCREENINFO,&var);
 379         if (stat<0){
 380                 perror ("Error setting mode");
 381                 return 1;
 382         }
 383         pfb = mmap (0, fix.smem_len, PROT_READ|PROT_WRITE, MAP_SHARED, fbd, 0);
 384         if (pfb == MAP_FAILED){
 385                 perror ("Error mmap'ing framebuffer device");
 386                 return 1;
 387         }
 388
 389         // iterate over all modes
 390         for (i_pix=0;i_pix<PIXELFORMATNUM;i_pix++){
 391                 if (fmode!=-1 && pixelformattable[i_pix].pixenum != fmode) continue;
 392                 printf ("testing: %s",pixelformattable[i_pix].name);
 393                 printf (" for sizes: \n");
 394                 for (i_size=0;i_size<VIDSIZENUM;i_size++){
 395                         if (smode!=-1 && i_size!=smode) continue;
 396                         printf ("%dx%d ",vidsizetable[i_size].width,vidsizetable[i_size].height);
 397                         fflush(stdout);
 398                         if ((i_size%4)==3) printf ("\n");
 399
 400                         // try to set mode
 401                         stat = setmode(fbd,&pixelformattable[i_pix],&vidsizetable[i_size]);
 402                         if (stat==-2) perror ("fbtest: could not get fb_var-screeninfo from fb-device");
 403                         else if (stat==-1){
 404                                 printf ("\nCould not set mode %s (%dx%d), possible reasons:\n"
 405                                         "- you have a GTX (soz m8)\n"
 406                                         "- your configuration does not have enough graphics RAM\n"
 407                                         "- you found a bug\n"
 408                                         "choose your poison accordingly...\n",
 409                                         pixelformattable[i_pix].name,vidsizetable[i_size].width,vidsizetable[i_size].height);
 410                                         continue;
 411                         }
 412                         // fill cmap;
 413                         cmap.len = 1;
 414                         if ((pixelformattable[i_pix].bpp==4)||
 415                                 ((pixelformattable[i_pix].bpp==8)&&(pixelformattable[i_pix].red.length!=3))){
 416                                 for (i_cmap=0;i_cmap<COLOURNUM;i_cmap++){
 417                                         cmap.start=i_cmap;
 418                                         cmap.red=&colourtable[i_cmap].r;
 419                                         cmap.green=&colourtable[i_cmap].g;
 420                                         cmap.blue=&colourtable[i_cmap].b;
 421                                         cmap.transp=&colourtable[i_cmap].a;
 422                                         stat = ioctl (fbd, FBIOPUTCMAP, &cmap);
 423                                         if (stat<0) printf ("setting colourmap failed\n");
 424                                 }
 425                         }
 426                         // create the test image
 427                         draw4field(pfb,&pixelformattable[i_pix],&vidsizetable[i_size]);
 428                         usleep (500000);
 429                         // clear screen
 430                         if (clear){
 431                                 r.x=r.y=0;r.width = vidsizetable[i_size].width; r.height = vidsizetable[i_size].height;
 432                                 r.col = &colourtable[4];
 433                                 drawrect(pfb,&r,&pixelformattable[i_pix],&vidsizetable[i_size]);
 434                         }
 435                 }
 436                 printf ("\n");
 437         }
 438
 439         stat = munmap (pfb,fix.smem_len);
 440         if (stat<0){
 441                 perror ("Error munmap'ing framebuffer device");
 442                 return 1;
 443         }
 444         close (fbd);
 445         return 0;
 446 }