int
changeSize (struct vdIn *vd)
{
int erreur;
erreur = GetVideoPict (vd);
vd->formatIn = vd->videopict.palette;
vd->bppIn = vd->videopict.depth;
/* To Compute the estimate frame size perhaps not need !!! */
if ((vd->bppIn = GetDepth (vd->formatIn)) < 0)
{
perror ("getdepth failed \n");
exit (1);
}
if (vd->grabMethod)
{
vd->vmmap.height = vd->hdrheight;
vd->vmmap.width = vd->hdrwidth;
vd->vmmap.format = vd->formatIn;
}
else
{
if (ioctl (vd->fd, VIDIOCGWIN, &vd->videowin) < 0)
perror ("VIDIOCGWIN failed \n");
vd->videowin.height = vd->hdrheight;
vd->videowin.width = vd->hdrwidth;
if (ioctl (vd->fd, VIDIOCSWIN, &vd->videowin) < 0)
perror ("VIDIOCSWIN failed \n");
printf ("VIDIOCGWIN height %d width %d \n",
vd->videowin.height, vd->videowin.width);
}
vd->framesizeIn = ((vd->hdrwidth * vd->hdrheight * vd->bppIn) >> 3);
// vd->pixTmp =
// (unsigned char *) realloc (vd->pixTmp, (size_t) vd->framesizeIn);
return 0;
}
static int
init_v4l (struct vdIn *vd)
{
int f;
int erreur = 0;
int err;
if ((vd->fd = open (vd->videodevice, O_RDWR)) == -1)
{
//exit_fatal ("ERROR opening V4L interface");
printf("ERROR opening V4L interface\n");
return -1;
}
if (ioctl (vd->fd, VIDIOCGCAP, &(vd->videocap)) == -1)
{
//exit_fatal ("Couldn't get videodevice capability");
printf("Couldn't get videodevice capability");
return -1;
}
printf ("Camera found: %s \n", vd->videocap.name);
snprintf (vd->cameraname, 32, "%s", vd->videocap.name);
erreur = GetVideoPict (vd);
if (ioctl (vd->fd, VIDIOCGCHAN, &vd->videochan) == -1)
{
printf ("Hmm did not support Video_channel\n");
vd->cameratype = UNOW;
}
else
{
if (vd->videochan.name){
printf ("Bridge found: %s \n", vd->videochan.name);
snprintf (vd->bridge, 9, "%s", vd->videochan.name);
vd->cameratype = GetStreamId (vd->videochan.name);
spcaPrintParam (vd->fd,&vd->videoparam);
}
else
{
printf ("Bridge not found not a spca5xx Webcam Probing the hardware !!\n");
vd->cameratype = UNOW;
}
}
printf ("StreamId: %d Camera\n", vd->cameratype);
/* probe all available palette and size */
if (probePalette(vd ) < 0) {
//exit_fatal ("could't probe video palette Abort !");
printf ("could't probe video palette Abort !\n");
return -1;
}
if (probeSize(vd ) < 0) {
//exit_fatal ("could't probe video size Abort !");
printf ("could't probe video size Abort !\n");
return -1;
}
/* now check if the needed setting match the available
if not find a new set and populate the change */
err = check_palettesize(vd);
printf (" Format asked %d check %d\n",vd->formatIn, err);
vd->videopict.palette = vd->formatIn;
vd->videopict.depth = GetDepth (vd->formatIn);
vd->bppIn = GetDepth (vd->formatIn);
vd->framesizeIn = (vd->hdrwidth * vd->hdrheight * vd->bppIn) >> 3;
erreur = SetVideoPict (vd);
erreur = GetVideoPict (vd);
if (vd->formatIn != vd->videopict.palette ||
vd->bppIn != vd->videopict.depth) {
//exit_fatal ("could't set video palette Abort !");
printf ("could't set video palette Abort !\n");
return -1;
}
if (erreur < 0){
printf ("could't set video palette Abort !\n");
return -1;
}
if (vd->grabMethod)
{
printf (" grabbing method default MMAP asked \n");
// MMAP VIDEO acquisition
memset (&(vd->videombuf), 0, sizeof (vd->videombuf));
if (ioctl (vd->fd, VIDIOCGMBUF, &(vd->videombuf)) < 0)
{
perror (" init VIDIOCGMBUF FAILED\n");
}
printf ("VIDIOCGMBUF size %d frames %d offets[0]=%d offsets[1]=%d\n",
vd->videombuf.size, vd->videombuf.frames,
vd->videombuf.offsets[0], vd->videombuf.offsets[1]);
vd->pFramebuffer =
(unsigned char *) mmap (0, vd->videombuf.size, PROT_READ | PROT_WRITE,
MAP_SHARED, vd->fd, 0);
vd->mmapsize = vd->videombuf.size;
vd->vmmap.height = vd->hdrheight;
vd->vmmap.width = vd->hdrwidth;
vd->vmmap.format = vd->formatIn;
for (f = 0; f < vd->videombuf.frames; f++)
{
vd->vmmap.frame = f;
if (ioctl (vd->fd, VIDIOCMCAPTURE, &(vd->vmmap)))
{
perror ("cmcapture");
}
}
vd->vmmap.frame = 0;
}
else
{
/* read method */
/* allocate the read buffer */
vd->pFramebuffer =
(unsigned char *) realloc (vd->pFramebuffer, (size_t) vd->framesizeIn);
printf (" grabbing method READ asked \n");
if (ioctl (vd->fd, VIDIOCGWIN, &(vd->videowin)) < 0)
perror ("VIDIOCGWIN failed \n");
vd->videowin.height = vd->hdrheight;
vd->videowin.width = vd->hdrwidth;
if (ioctl (vd->fd, VIDIOCSWIN, &(vd->videowin)) < 0)
perror ("VIDIOCSWIN failed \n");
printf ("VIDIOCSWIN height %d width %d \n",
vd->videowin.height, vd->videowin.width);
}
vd->frame_cour = 0;
return erreur;
}
