media: cx18: fix format compliance issues

This properly fills in all the format fields and calculates the
width and height correctly.

Esp. the minimum width and height was wrong.

When changing the standard the width and height also have to be
reset to the corresponding default width/height for the chosen
standard.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/pci/cx18/cx18-ioctl.c

@@ -78,29 +78,43 @@ static int cx18_try_fmt_vid_cap(struct file *file, void *fh,
 {
 	struct cx18_open_id *id = fh2id(fh);
 	struct cx18 *cx = id->cx;
-	int w = fmt->fmt.pix.width;
-	int h = fmt->fmt.pix.height;
-	int min_h = 2;
+	struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
+	int w = pixfmt->width;
+	int h = pixfmt->height;
 
 	w = min(w, 720);
-	w = max(w, 2);
-
-	if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
-		if (fmt->fmt.pix.pixelformat != V4L2_PIX_FMT_NV12_16L16 &&
-		    fmt->fmt.pix.pixelformat != V4L2_PIX_FMT_UYVY)
-			fmt->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY;
-		/* YUV height must be a multiple of 32 */
-		h &= ~0x1f;
-		min_h = 32;
-	} else {
-		fmt->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
-	}
+	w = max(w, 720 / 16);
 
 	h = min(h, cx->is_50hz ? 576 : 480);
-	h = max(h, min_h);
+	h = max(h, (cx->is_50hz ? 576 : 480) / 8);
 
-	fmt->fmt.pix.width = w;
-	fmt->fmt.pix.height = h;
+	if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
+		if (pixfmt->pixelformat != V4L2_PIX_FMT_NV12_16L16 &&
+		    pixfmt->pixelformat != V4L2_PIX_FMT_UYVY)
+			pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
+		/* YUV height must be a multiple of 32 */
+		h = round_up(h, 32);
+		/*
+		 * HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
+		 * UYUV YUV size is (Y=(h*720) + UV=(h*(720)))
+		 */
+		if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12_16L16) {
+			pixfmt->sizeimage = h * 720 * 3 / 2;
+			pixfmt->bytesperline = 720; /* First plane */
+		} else {
+			pixfmt->sizeimage = h * 720 * 2;
+			pixfmt->bytesperline = 1440; /* Packed */
+		}
+	} else {
+		pixfmt->pixelformat = V4L2_PIX_FMT_MPEG;
+		pixfmt->sizeimage = 128 * 1024;
+		pixfmt->bytesperline = 0;
+	}
+
+	pixfmt->width = w;
+	pixfmt->height = h;
+	pixfmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
+	pixfmt->field = V4L2_FIELD_INTERLACED;
 	return 0;
 }
 
@@ -130,17 +144,8 @@ static int cx18_s_fmt_vid_cap(struct file *file, void *fh,
 		return -EBUSY;
 
 	s->pixelformat = fmt->fmt.pix.pixelformat;
-	/*
-	 * HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
-	 * UYUV YUV size is (Y=(h*720) + UV=(h*(720)))
-	 */
-	if (s->pixelformat == V4L2_PIX_FMT_NV12_16L16) {
-		s->vb_bytes_per_frame = h * 720 * 3 / 2;
-		s->vb_bytes_per_line = 720; /* First plane */
-	} else {
-		s->vb_bytes_per_frame = h * 720 * 2;
-		s->vb_bytes_per_line = 1440; /* Packed */
-	}
+	s->vb_bytes_per_frame = fmt->fmt.pix.sizeimage;
+	s->vb_bytes_per_line = fmt->fmt.pix.bytesperline;
 
 	format.format.width = cx->cxhdl.width = w;
 	format.format.height = cx->cxhdl.height = h;
@@ -253,7 +258,6 @@ u16 cx18_get_service_set(struct v4l2_sliced_vbi_format *fmt)
 	return set;
 }
 
-
 static int cx18_g_fmt_vbi_cap(struct file *file, void *fh,
 				struct v4l2_format *fmt)
 {
@@ -614,6 +618,19 @@ int cx18_s_std(struct file *file, void *fh, v4l2_std_id std)
 	cx2341x_handler_set_50hz(&cx->cxhdl, cx->is_50hz);
 	cx->cxhdl.width = 720;
 	cx->cxhdl.height = cx->is_50hz ? 576 : 480;
+	/*
+	 * HM12 YUV size is (Y=(h*720) + UV=(h*(720/2)))
+	 * UYUV YUV size is (Y=(h*720) + UV=(h*(720)))
+	 */
+	if (cx->streams[CX18_ENC_STREAM_TYPE_YUV].pixelformat == V4L2_PIX_FMT_NV12_16L16) {
+		cx->streams[CX18_ENC_STREAM_TYPE_YUV].vb_bytes_per_frame =
+			cx->cxhdl.height * 720 * 3 / 2;
+		cx->streams[CX18_ENC_STREAM_TYPE_YUV].vb_bytes_per_line = 720;
+	} else {
+		cx->streams[CX18_ENC_STREAM_TYPE_YUV].vb_bytes_per_frame =
+			cx->cxhdl.height * 720 * 2;
+		cx->streams[CX18_ENC_STREAM_TYPE_YUV].vb_bytes_per_line = 1440;
+	}
 	cx->vbi.count = cx->is_50hz ? 18 : 12;
 	cx->vbi.start[0] = cx->is_50hz ? 6 : 10;
 	cx->vbi.start[1] = cx->is_50hz ? 318 : 273;