V4L/DVB (10486): ivtv/cx18: fix g_fmt and try_fmt for raw video

The raw video device didn't report the image size correctly.

When setting a new image the image height has to be a multiple of 32 lines.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 11 insertions, 6 deletions

diff --git a/drivers/media/video/cx18/cx18-ioctl.c b/drivers/media/video/cx18/cx18-ioctl.c
index 0f0cd560226c..5c8e9cb244f9 100644
--- a/drivers/media/video/cx18/cx18-ioctl.c
+++ b/drivers/media/video/cx18/cx18-ioctl.c
@@ -160,10 +160,8 @@ static int cx18_g_fmt_vid_cap(struct file *file, void *fh,
         pixfmt->priv = 0;
         if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
                 pixfmt->pixelformat = V4L2_PIX_FMT_HM12;
-                /* YUV size is (Y=(h*w) + UV=(h*(w/2))) */
-                pixfmt->sizeimage =
-                        pixfmt->height * pixfmt->width +
-                        pixfmt->height * (pixfmt->width / 2);
+                /* YUV size is (Y=(h*720) + UV=(h*(720/2))) */
+                pixfmt->sizeimage = pixfmt->height * 720 * 3 / 2;
                 pixfmt->bytesperline = 720;
         } else {
                 pixfmt->pixelformat = V4L2_PIX_FMT_MPEG;
@@ -228,11 +226,18 @@ static int cx18_try_fmt_vid_cap(struct file *file, void *fh,
         struct cx18 *cx = id->cx;
         int w = fmt->fmt.pix.width;
         int h = fmt->fmt.pix.height;
+        int min_h = 2;
 
         w = min(w, 720);
-        w = max(w, 1);
+        w = max(w, 2);
+        if (id->type == CX18_ENC_STREAM_TYPE_YUV) {
+                /* YUV height must be a multiple of 32 */
+                h &= ~0x1f;
+                min_h = 32;
+        }
         h = min(h, cx->is_50hz ? 576 : 480);
-        h = max(h, 2);
+        h = max(h, min_h);
+
         cx18_g_fmt_vid_cap(file, fh, fmt);
         fmt->fmt.pix.width = w;
         fmt->fmt.pix.height = h;