void redraw(void (*drawfunc)(Screencell*,unsigned int,unsigned int),bool copyover,bool forceredraw){
unsigned int scrwidth,scrheight;
tie(scrwidth,scrheight)=IO::screensize();
const bool validprev=prevscreen&&scrwidth==prevwidth&&scrheight==prevheight;
Screencell *newscreen=new Screencell[scrwidth*scrheight];
//cerr<<"redraw: validprev="<<validprev<<" copyover="<<copyover<<" prevscreen?="<<!!prevscreen<<endl;
if(copyover&&validprev)
memcpy(newscreen,prevscreen,scrwidth*scrheight*sizeof(Screencell));
drawfunc(newscreen,scrwidth,scrheight);
if(!validprev||forceredraw){
copytoscreen(newscreen,scrwidth,0,0,scrwidth,scrheight);
if(prevscreen)delete[] prevscreen;
prevwidth=scrwidth;
prevheight=scrheight;
prevscreen=new Screencell[scrwidth*scrheight];
assert(prevscreen);
memcpy(prevscreen,newscreen,scrwidth*scrheight*sizeof(Screencell));
} else {
unsigned int x,y;
for(y=0;y<scrheight;y++){
for(x=0;x<scrwidth;x++){
if(prevscreen[scrwidth*y+x]!=newscreen[scrwidth*y+x])break;
}
if(x<scrwidth){
//cerr<<"refreshing line "<<y<<" (diff at x="<<x<<')'<<endl;
copylinetoscreen(newscreen,scrwidth,0,y,scrwidth);
}
}
memcpy(prevscreen,newscreen,scrwidth*scrheight*sizeof(Screencell));
}
gotoFrontBufferCursor();
cout.flush();
}
int main(int argc, char** argv)
{
if(argc == 2) {
strcpy(my_video_dev, argv[1]);
} else {
strcpy(my_video_dev, "/dev/video0");
}
//if (-1 == (fd = open(my_video_dev, O_RDWR))) {
if (-1 == (fd = v4l1_open(my_video_dev, O_RDWR))) {
printf("Error opening device: %s\n", my_video_dev);
goto error;
}
//if( -1 == ioctl(fd, VIDIOC_QUERYCAP, &v4l2_capability) ) {
if( ioctl(fd, VIDIOC_QUERYCAP, &v4l2_capability) < 0 ) {
printf("asd 1\n");
if( -1 == ioctl(fd, VIDIOCGCAP, &capability) ) {
printf("asd 2\n");
printf("Error1: ioctl(fd,VIDIOCGCAP,&capability)\n");
camDriver = DRIVER_NONE;
goto error;
} else {
printf("asd 3\n");
camDriver = DRIVER_V4L;
}
} else {
printf("asd 4\n");
camDriver = DRIVER_V4L2;
v4l1_close(fd);
fd = v4l1_open(my_video_dev, O_RDWR);
if( -1 == my_ioctl(VIDIOCGCAP, &capability)) {
printf("asd 5\n");
printf("Error2: ioctl(fd,VIDIOCGCAP,&capability)\n");
goto error;
}
}
// if( DRIVER_V4L == camDriver ) {
printf("\n -----[ VIDIOCGCAP returns ]-----\n");
printf(" name: %s\n", capability.name);
printf(" type: %i\n", capability.type);
printf(" channels: %i\n", capability.channels);
printf(" audios: %i\n", capability.audios);
printf(" maxwidth: %i\n", capability.maxwidth);
printf(" maxheight: %i\n", capability.maxheight);
printf(" minwidth: %i\n", capability.minwidth);
printf(" minheight: %i\n", capability.minheight);
// }
if (-1 == my_ioctl(VIDIOCGPICT,&picture)) {
printf("Error: ioctl(fd,VIDIOCGCPICT,&picture)\n");
goto error;
}
printf("\n -----[ VIDIOCGPICT returns ]-----\n");
printf(" brightness: %i\n", picture.brightness);
printf(" hue: %i\n", picture.hue);
printf(" colour: %i\n", picture.colour);
printf(" contrast: %i\n", picture.contrast);
printf(" whiteness: %i\n", picture.whiteness);
printf(" depth: %i\n", picture.depth);
char static palet_tipi_str[64];
palette_name(palet_tipi_str, picture.palette);
printf(" palette: %s\n\n", palet_tipi_str);
vch.channel = 0;
// vch.norm = VIDEO_MODE_PAL;
if(-1 == my_ioctl(VIDIOCSCHAN,&vch)) {
perror("Setting channel\n");
goto error;
}
fcntl(fd,F_SETFD,FD_CLOEXEC);
if (-1 == my_ioctl(VIDIOCGMBUF,&gb_buffers)) {
printf("Error: Error getting buffers\n");
goto error;
}
map = my_mmap(0,gb_buffers.size,PROT_READ|PROT_WRITE,MAP_SHARED,fd,0);
if (map == NULL) {
printf("Error: Mmap returned NULL\n");
goto error;
}
// Set up out capture to use the correct resolution
my_buf.width = mywidth;
my_buf.height = myheight;
my_buf.format = VIDEO_PALETTE_RGB24;
// Set up out video output
SDL_Init(SDL_INIT_VIDEO);
screen = SDL_SetVideoMode(mywidth, myheight, 24, SDL_SWSURFACE);
if ( screen == NULL ) {
fprintf(stderr, "Couldn't set video mode: %s\n",
SDL_GetError());
exit(1);
}
SDL_WM_SetCaption("Oy oy oy teve pirogrami", NULL);
// Tell the capture card to fill frame 0
my_buf.frame = 0;
if (-1 == my_ioctl(VIDIOCMCAPTURE, &my_buf)) {
printf(" ilk my_buf.frame=0 da hata olustu\n");
// printf("Error: Grabber chip can't sync (no station tuned in?)\n");
goto error;
}
// This is the infinate loop
// We basically:
// capture frame 1
// sync frame 0
// process frame 0
// capture frame 0
// sync frame 1
// process frame 1
// For more information, read the programming how-to that came with xawtv
do {
my_buf.frame = 1;
if (-1 == my_ioctl(VIDIOCMCAPTURE, &my_buf)) {
printf(" loop icinde frame=1 \n");
// printf("Error: Grabber chip can't sync (no station tuned in?)\n");
goto error;
}
my_buf.frame = 0;
if (-1 == my_ioctl(VIDIOCSYNC, &my_buf.frame)) {
printf("Error on sync!\n");
goto error;
}
copytoscreen(map);
my_buf.frame = 0;
if (-1 == my_ioctl(VIDIOCMCAPTURE, &my_buf)) {
printf(" loop icinde frame=0 \n");
// printf("Error: Grabber chip can't sync (no station tuned in?)\n");
goto error;
}
my_buf.frame = 1;
if (-1 == my_ioctl(VIDIOCSYNC, &my_buf.frame)) {
printf("Error on sync!\n");
goto error;
}
copytoscreen(map + gb_buffers.offsets[1]);
SDL_PollEvent(&event);
} while (event.type != SDL_KEYDOWN);
error:
SDL_Quit();
return EXIT_SUCCESS;
}
