From 72401b7a37c6f0132ea2d0c3236ec706a9e5759e Mon Sep 17 00:00:00 2001 From: Andy Walls Date: Sat, 28 Feb 2009 14:51:47 -0300 Subject: [PATCH] V4L/DVB (10851): cx18: Fix a video scaling check problem introduced by sliced VBI changes Fix a scaling check that was failing, due to a magic number I missed fixing during previous slice VBI changes. Now $ v4l2-ctl -v width=480,height=480,pixelformat=MPEG yields proper visual results again. Signed-off-by: Andy Walls Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/cx18/cx18-av-core.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/media/video/cx18/cx18-av-core.c b/drivers/media/video/cx18/cx18-av-core.c index cf256a9..aeeb3cf 100644 --- a/drivers/media/video/cx18/cx18-av-core.c +++ b/drivers/media/video/cx18/cx18-av-core.c @@ -867,8 +867,22 @@ static int cx18_av_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt) Hsrc = (cx18_av_read(cx, 0x472) & 0x3f) << 4; Hsrc |= (cx18_av_read(cx, 0x471) & 0xf0) >> 4; - Vlines = pix->height + (is_50Hz ? 4 : 7); + /* + * This adjustment reflects the excess of vactive, set in + * cx18_av_std_setup(), above standard values: + * + * 480 + 1 for 60 Hz systems + * 576 + 4 for 50 Hz systems + */ + Vlines = pix->height + (is_50Hz ? 4 : 1); + /* + * Invalid height and width scaling requests are: + * 1. width less than 1/16 of the source width + * 2. width greater than the source width + * 3. height less than 1/8 of the source height + * 4. height greater than the source height + */ if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) || (Vlines * 8 < Vsrc) || (Vsrc < Vlines)) { CX18_ERR_DEV(sd, "%dx%d is not a valid size!\n", -- 2.7.4