int initFB(void) {
L("--Initializing framebuffer access method--\n");
fbmmap = MAP_FAILED;
if ((fbfd = open(framebuffer_device, O_RDWR)) == -1) {
L("Cannot open fb device %s\n", framebuffer_device);
return -1;
}
update_fb_info();
if (ioctl(fbfd, FBIOGET_FSCREENINFO, &fscrinfo) != 0) {
L("ioctl error\n");
return -1;
}
L("line_length=%d xres=%d, yres=%d, xresv=%d, yresv=%d, xoffs=%d, yoffs=%d, bpp=%d\n",
(int)fscrinfo.line_length,(int)scrinfo.xres, (int)scrinfo.yres,
(int)scrinfo.xres_virtual, (int)scrinfo.yres_virtual,
(int)scrinfo.xoffset, (int)scrinfo.yoffset,
(int)scrinfo.bits_per_pixel);
size_t size = scrinfo.yres_virtual;
size_t fbSize = roundUpToPageSize(fscrinfo.line_length * size);
fbmmap = mmap(NULL, fbSize , PROT_READ|PROT_WRITE , MAP_SHARED , fbfd, 0);
if (fbmmap == MAP_FAILED) {
L("mmap failed\n");
return -1;
}
// always scale down by 2
screenformat.width = scrinfo.xres / 2;
screenformat.height = scrinfo.yres / 2;
// constants for RGB565
screenformat.bitsPerPixel = 16;
screenformat.size = screenformat.width * screenformat.height * screenformat.bitsPerPixel / CHAR_BIT;
screenformat.redShift = 11;
screenformat.redMax = 5;
screenformat.greenShift = 5;
screenformat.greenMax = 6;
screenformat.blueShift = 0;
screenformat.blueMax = 5;
return 1;
}
void FUNCTION(void)
{
static int i,j,offset;
update_fb_info();
// // detect active buffer
// offset= (scrinfo.xoffset) * (scrinfo.bits_per_pixel/8) +
// (scrinfo.yoffset) * scrinfo.xres;
// if (scrinfo.yoffset)
// offset=scrinfo.xres*scrinfo.yoffset;
// else
// offset=0;
offset = scrinfo.xres * scrinfo.yoffset + scrinfo.xoffset * scrinfo.bits_per_pixel / CHAR_BIT;
OUT_T* a = (OUT_T*)cmpbuf;
OUT_T* b = (OUT_T*)fbmmap;
int max_x=-1,max_y=-1, min_x=9999, min_y=9999;
idle=1;
if (rotation==0)
{
//memcpy(vncbuf,fbmmap,vncscr->width*vncscr->height*scrinfo.bits_per_pixel/CHAR_BIT);
for (j = 0; j < scrinfo.yres; j++)
{
for (i = 0; i < scrinfo.xres; i++)
{
if (a[i + j * scrinfo.xres]!=b[i + j * scrinfo.xres + offset ])
{
a[i + j * scrinfo.xres]=b[i + j * scrinfo.xres + offset];
if (i>max_x)
max_x=i;
if (i<min_x)
min_x=i;
if (j>max_y)
max_y=j;
if (j<min_y)
min_y=j;
if (idle)
idle=0;
}
}
}
}
else if (rotation==90)
{
for (j = 0; j < scrinfo.yres; j++)
{
for (i = 0; i < scrinfo.xres; i++)
{
if (a[(scrinfo.yres - 1 - j + i * scrinfo.yres)] != b[i + j * scrinfo.xres + offset])
{
a[(scrinfo.yres - 1 - j + i * scrinfo.yres)] = b[i + j * scrinfo.xres + offset ];
if (i>max_y)
max_y=i;
if (i<min_y)
min_y=i;
int h=scrinfo.yres-j;
if (h < min_x)
min_x=scrinfo.yres-j;
if (h > max_x)
max_x=scrinfo.yres-j;
if (idle)
idle=0;
}
}
}
}
else if (rotation==180)
{
for (j = 0; j < scrinfo.yres; j++)
{
for (i = 0; i < scrinfo.xres; i++)
{
if (a[i + j * scrinfo.xres]!=b[scrinfo.yres*scrinfo.xres - (i + j * scrinfo.xres ) + offset ])
{
a[i + j * scrinfo.xres]=b[scrinfo.yres*scrinfo.xres - (i + j * scrinfo.xres) + offset ];
if (i>max_x)
max_x=i;
if (i<min_x)
min_x=i;
if (j>max_y)
max_y=j;
if (j<min_y)
min_y=j;
if (idle)
idle=0;
}
}
}
}
else if (rotation==270)
{
for (j = 0; j < scrinfo.yres; j++)
{
for (i = 0; i < scrinfo.xres; i++)
{
if(a[(scrinfo.yres - 1 - j + i * scrinfo.yres)] != b[ scrinfo.yres * scrinfo.xres - (i + j * scrinfo.xres) + offset ])
{
a[(scrinfo.yres - 1 - j + i * scrinfo.yres)] = b[ scrinfo.yres * scrinfo.xres - (i + j * scrinfo.xres) + offset ];
if (i>max_y)
max_y=i;
if (i<min_y)
min_y=i;
int h=scrinfo.yres-j;
if (h < min_x)
min_x=scrinfo.yres-j;
if (h > max_x)
max_x=scrinfo.yres-j;
if (idle)
idle=0;
}
}
}
}
memcpy(vncbuf,a,vncscr->width*vncscr->height*scrinfo.bits_per_pixel/CHAR_BIT);
if (min_x!=9999 && min_y!=9999 && max_x!=-1 && max_y!=-1)
{
// min_x--;
max_x++;
// min_y--;
max_y++;
rfbMarkRectAsModified(vncscr, min_x, min_y, max_x, max_y);
rfbProcessEvents(vncscr, 10000);
}
// rfbMarkRectAsModified(vncscr, 0, 0, scrinfo.yres,scrinfo.xres);
// rfbProcessEvents(vncscr, 10000);
if (idle)
{
standby=standby+1;
if (standby>30)
rfbProcessEvents(vncscr, 1000000);
else
rfbProcessEvents(vncscr, 100000);
// __android_log_print(ANDROID_LOG_INFO,"VNC","standby %d xoff=%d yoff=%d\n",standby,scrinfo.xoffset,scrinfo.yoffset);
change=0;
}
else
{
change=change+1;
standby=0;
rfbProcessEvents(vncscr, 100000);
// __android_log_print(ANDROID_LOG_INFO,"VNC","change %d\tmin_x=%d max_x=%d min_y=%d max_y=%d xoff=%d yoff=%d\n",change,min_x,max_x,min_y,max_y,scrinfo.xoffset,scrinfo.yoffset);
}
}
unsigned int *readBufferFB(void) {
update_fb_info();
return fbmmap;
}
