Linux 中的IPIPE是干什么用的啊

只看该作者 · 2009-9-7 19:54

void exit_app(int signo)
{
fprintf(stderr,"\n  exit the GPIO_INT appliaction,Good bye\n");
_exit(0);
}

unsigned short get_alarm_io(void)
{
      int alarm_inode=-1;
      unsigned short val =0;
      unsigned short *pval=&val;
if((alarm_inode=open("/dev/ala"rm,O_RDWR))<0)
      {
         printf("open alarm error\n");
         return -1;
      }
ioctl(alarm_inode, alm_read, pval);
close(alarm_inode);
return val;
}

void open_alarm(void)
{
      int alarm_inode=-1;
      if((alarm_inode=open("/dev/alarm",O_RDWR))<0)
         {
            printf("open alarm error\n"); }
         else
            printf("open al**\n");
         ioctl(alarm_inode,alm_set_almsvrpid,getpid());
         close(alarm_inode);
         }

void Smokesensor_alarm(int sig)
{ char *psmoke;
      int ret,i;  int j = 0;
#if !USE_ALM
   intflag=get_alarm_io();
#else if
intflag = (1<<6); //set intflag use alarm happen
printf("intflag in smokesensor_alarm is %d\n", intflag);
  alarm(10);

#endif

}

void sig_init()
sensor //  signal(SIGPIPE, alarm_handler);
// signal(SIGINT, exit_app);
sigact_smokesensor.sa_handler = Smokesensor_alarm;
sigemptyset(&sigact_smokesensor.sa_mask);
sigaddset(&sigact_smokesensor.sa_mask,SIGUSR2);
sigact_smokesensor.sa_flags=0;
if(sigaction(SIGUSR2,&sigact_smokesensor,NULL)<0)
      printf("Install smokesensor_alarm Signal Action Error");
#if USE_ALM
signal (SIGALRM, Smokesensor_alarm);
alarm (5);
#endif
}

static void initdevice()
{

      jpeginit();//初始化codec
      printf("initialize Ipipe");
InitIpipe(CAP_WIDTH, CAP_HEIGHT, &ipipebuffer);
printf("initializing capture device\n");
InitCaptureDevice(CAP_FORMAT, CAP_WIDTH, CAP_HEIGHT);
printf("initializing display device\n");
InitDisplayDevice();
printf("starting streaming\n");
StartStreaming();
}

static void jpeginit(void)
{
// init Codec Engine
CERuntime_init();
// init trace
GT_init();
// create a mask to allow a trace-print welcome message below
GT_create(&curMask, MOD_NAME);
// Enable all trace for this module
GT_set(MOD_NAME "=01234567");
GT_0trace(curMask, GT_2CLASS, "main> " MOD_NAME "\n");
}

int StartCameraCapture(void)
{

int capbuf_phyaddr;
unsigned short *addr;
unsigned char *addr8;
int previewOnce = 1;
int max;
int i=0,j;
int frame=0;
int cnt = 0; //the times count of photo caption

   //  for(i=0;i<500;i++)
   while (1)
      {

   CaptureFrame(&capbuf_phyaddr);
   DoIPIPING(CAP_WIDTH, CAP_HEIGHT, capbuf_phyaddr);
#if 1
  //printf("intflag in startCamerCap is %d\n", intflag);
      if(intflag!=0)
         {
            smain((XDAS_Int8 *)ipipebuffer.start);
               cnt ++;

  if (cnt == CAP_TIMES )  {
intflag=0;//清空标识位
cnt =0;
  }
         }

#endif

            DisplayFrame(ipipebuffer.start,640,480);//设置显示的大小
      frame++;
            //printf ( "\nhave captured and sent %d frames\n",frame );

      }

}

int main(int argc, char *argv[])
{

      sig_init();
      open_alarm();

initdevice();
   StartCameraCapture();
CloseCaptureDevice();
CloseIpipe(&ipipebuffer);
//restore_display_config();



return 0;
}

Linux 中的IPIPE是干什么用的啊

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