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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>
+
+#include <error.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;
+}
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