pci/bt8xx/bttv-vbi.c

177 static int try_fmt(struct v4l2_vbi_format *f, const struct bttv_tvnorm *tvnorm,
189 	min_start = tvnorm->vbistart[0];
191 	max_end = (tvnorm->cropcap.bounds.top
192 		   + tvnorm->cropcap.bounds.height) >> 1;
199 	f->sampling_rate    = tvnorm->Fsc;
204 	f2_offset = tvnorm->vbistart[1] - tvnorm->vbistart[0];
230 		f->start[0] = tvnorm->vbistart[0];
231 		f->start[1] = tvnorm->vbistart[1];
247 	const struct bttv_tvnorm *tvnorm;
252 	tvnorm = &bttv_tvnorms[btv->tvnorm];
257 	return try_fmt(&frt->fmt.vbi, tvnorm, crop_start);
264 	const struct bttv_tvnorm *tvnorm;
274 	tvnorm = &bttv_tvnorms[btv->tvnorm];
276 	rc = try_fmt(&frt->fmt.vbi, tvnorm, btv->crop_start);
280 	start1 = frt->fmt.vbi.start[1] - tvnorm->vbistart[1] +
281 		tvnorm->vbistart[0];
292 	btv->vbi_fmt.tvnorm = tvnorm;
306 	const struct bttv_tvnorm *tvnorm;
311 	tvnorm = &bttv_tvnorms[btv->tvnorm];
313 	if (tvnorm != btv->vbi_fmt.tvnorm) {
321 		max_end = (tvnorm->cropcap.bounds.top
322 			   + tvnorm->cropcap.bounds.height) >> 1;
324 		frt->fmt.vbi.sampling_rate = tvnorm->Fsc;
329 			new_start = frt->fmt.vbi.start[i] + tvnorm->vbistart[i]
330 				- btv->vbi_fmt.tvnorm->vbistart[i];
337 			max_end += tvnorm->vbistart[1]
338 				- tvnorm->vbistart[0];
346 	const struct bttv_tvnorm *tvnorm;
350 	tvnorm = &bttv_tvnorms[norm];
352 	f->fmt.sampling_rate    = tvnorm->Fsc;
356 	f->fmt.start[0]		= tvnorm->vbistart[0];
357 	f->fmt.start[1]		= tvnorm->vbistart[1];
366 	real_samples_per_line   = 1024 + tvnorm->vbipack * 4;
367 	real_count              = ((tvnorm->cropcap.defrect.top >> 1)
368 				   - tvnorm->vbistart[0]);
373 	f->tvnorm               = tvnorm;
376 	f->end                  = tvnorm->vbistart[0] * 2 + 2;