/***************************************** Copyright ? 2001-2003	 Sigma Designs, Inc. All Rights Reserved Proprietary and Confidential *****************************************/#define ALLOW_OS_CODE 1#include "../rua/include/rua.h"#include <unistd.h>#include <stdio.h>#include <fcntl.h>#include <linux/fb.h>#include <sys/mman.h>#include <sys/ioctl.h>#include <stdlib.h>#include <string.h>#if 0#define DEB(f) (f)#else#define DEB(f)#endifstruct fb_var_screeninfo fb_var;struct fb_fix_screeninfo fb_fix;char * fb_base_addr = NULL;/* Set a pixel color * @param p_osd osd descriptor * @param x * @param y * @color 0xAARRGGBB (AA = alpha : 0 transparent) */static void set_pixel(RMuint32 x, RMuint32 y, RMuint32 color){	//static RMuint32 i=0;	/* TODO We assume for now we have contigus regions */	switch (fb_var.bits_per_pixel){		case 32:			{				RMuint32 *addr= (RMuint32 *)fb_base_addr+(y*fb_var.xres+x);                                RMuint32ToLeBuf(color, (RMuint8 *) addr);			}			break;		case 24:			{				RMuint32 *addr= (RMuint32 *)fb_base_addr+(y*fb_var.xres+x);                                RMuint32ToLeBuf((0x00FFFFFF) & color, (RMuint8 *) addr);				/*RMuint8 *addr = (RMuint8 *)fb_base_addr+(y*fb_var.xres+x)*3;				*addr = (RMuint8) (color & 0xFF);				*(addr+1) = (RMuint8) (color >> 8 & 0xFF);				*(addr+2) = (RMuint8) (color >> 16 & 0xFF);*/			}			break;		case 16:			{				RMuint16 *addr = (RMuint16 *) fb_base_addr+(y*fb_var.xres+x);                                RMuint16ToLeBuf((RMuint16) color, (RMuint8 *) addr);			}			break;		case 8:			{				RMuint8 *addr = (RMuint8 *)fb_base_addr+(y*fb_var.xres+x);				*addr = (RMuint8) color;			}			break;		case 4:			{				RMuint8 *addr = (RMuint8 *)fb_base_addr+(y*fb_var.xres+x) / 2;				RMuint32 bit = (RMuint32) ((RMuint8 *)fb_base_addr+(y*fb_var.xres+x) % 2);				RMuint8 pixel = *addr;				pixel = pixel & ( 0x0F << bit * 4 );				color = ( color & 0x0000000F ) << 4;				*addr = pixel | ( (RMuint8) color >> bit * 4 );			}			break;		case 2:			{				RMuint8 *addr = (RMuint8 *)fb_base_addr+(y*fb_var.xres+x) / 4;				RMuint32 bit = (RMuint32) ((RMuint8 *)fb_base_addr+(y*fb_var.xres+x) % 4);				RMuint8 pixel = *addr;				pixel = pixel & ( 0xFF ^ ( 0x3 << bit * 2));				color = color & 0x00000003;				*addr = pixel | ( (RMuint8) color << bit * 2 );			}			break;		case 1:			{				/*RMuint8 *addr = (RMuint8 *)fb_base_addr+(y*fb_var.xres+x);				*addr = (RMuint8) color;*/				RMuint8 *addr = (RMuint8 *)fb_base_addr+(y*fb_var.xres+x) / 8;				RMuint32 bit = (RMuint32) ((RMuint8 *)fb_base_addr+(y*fb_var.xres+x) % 8);				RMuint8 pixel = *addr;				pixel = pixel & ( 0xFF ^ ( 0x1 << bit ));				color = color & 0x00000001;				*addr = pixel | ( (RMuint8) color << bit );			}			break;		default:			fprintf(stderr,"Unknown bpp : %d\n",fb_var.bits_per_pixel);			break;	}	/*if (i<10){		DEB(fprintf(stderr,"(%ld,%ld) [%p] <- %lX\n",x,y,addr,*addr));		i++;	}*/}static void mire(){	RMuint32 x,y;	RMuint32 color;	RMuint8 red,green,blue,alpha;	DEB(fprintf(stderr,"begin mire\n"));	for (y=0;y<fb_var.yres;y++)		for (x=0;x<fb_var.xres;x++){			color = ((x-fb_var.xres/2)*(x-fb_var.xres/2) + (y-fb_var.yres/2)*(y-fb_var.yres/2))/64;			red   = (color/8) % 256;			green = (color/4) % 256;			blue  = (color/2) % 256;			alpha = (color*2) % 256;			//alpha = 0xFF;			color |= ((RMuint32)alpha << 24);			color |= ((RMuint32)red   << 16);			color |= ((RMuint32)green << 8 );			color |= ((RMuint32)blue       );			set_pixel(x,y,color);		}	DEB(fprintf(stderr,"end mire\n"));}int main(int argc, char** argv){	int fd = 0;	long int screensize = 0;		if (argc<2) {		fprintf(stderr,"Usage (example): %s /dev/fb/1\n",argv[0]);		return -1;	} 	fd=open(argv[1],O_RDWR);	if (fd <0){		printf("error opening %s\n",argv[1]);		exit(1);	}	// Get fixed screen information	if (ioctl(fd, FBIOGET_FSCREENINFO, &fb_fix)) {		printf("Error reading fb fixed information.\n");		exit(1);	}	// Get variable screen information	if (ioctl(fd, FBIOGET_VSCREENINFO, &fb_var)) {		printf("Error reading fb variable information.\n");		exit(1);	}	printf("%dx%d, %dbpp\n", fb_var.xres, fb_var.yres, fb_var.bits_per_pixel );	screensize = fb_var.xres * fb_var.yres * fb_var.bits_per_pixel / 8;	#if (EM86XX_MODE == EM86XX_MODEID_WITHHOST) || (EM86XX_CHIP == EM86XX_CHIPID_TANGO2)	/* fix #6351 comment26 e.m. 2006oct20 */#define PAGE_SIZE       (4096)	fb_base_addr = (char *)mmap(NULL , screensize+PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);#else	//uclinux doesn't support MAP_SHARED or MAP_PRIVATE with PROT_WRITE, so no mmap at all is simpler	fb_base_addr = (char *)fb_fix.smem_start;#endif	if ((int)fb_base_addr == -1) {		printf("error mapping fb\n");		exit(1);	}#if (EM86XX_CHIP == EM86XX_CHIPID_TANGO2) && (EM86XX_MODE == EM86XX_MODEID_STANDALONE)	/* temporary fix for 5159, mapping is paged aligned */	if (fb_fix.smem_start & (PAGE_SIZE-1)) {		fb_base_addr += (fb_fix.smem_start & (PAGE_SIZE-1));		fprintf(stderr, "Fix alignment 0x%08lx -> %p.\n",			fb_fix.smem_start, fb_base_addr);	}#endif /* EM86XX_CHIPID_TANGO2 && EM86XX_MODEID_STANDALONE */	//blank		memset(fb_base_addr,0x00,screensize);	usleep(50000);	mire();#if (EM86XX_MODE == EM86XX_MODEID_WITHHOST) || (EM86XX_CHIP == EM86XX_CHIPID_TANGO2)	munmap(fb_base_addr, screensize);#endif	close(fd);	return 0;}