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

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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>
This commit is contained in:
Hans Verkuil 2009-02-06 15:31:59 -03:00 committed by Mauro Carvalho Chehab
parent fdf9c9979a
commit a4a787187b
2 changed files with 20 additions and 11 deletions
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17
drivers/media/video/cx18/cx18-ioctl.c
View File

@ -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;

14
drivers/media/video/ivtv/ivtv-ioctl.c
View File

@ -345,10 +345,8 @@ static int ivtv_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f
pixfmt->priv = 0;
if (id->type == IVTV_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;
@ -469,11 +467,17 @@ static int ivtv_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format
struct ivtv *itv = id->itv;
int w = fmt->fmt.pix.width;
int h = fmt->fmt.pix.height;
int min_h = 2;
w = min(w, 720);
w = max(w, 2);
if (id->type == IVTV_ENC_STREAM_TYPE_YUV) {
/* YUV height must be a multiple of 32 */
h &= ~0x1f;
min_h = 32;
}
h = min(h, itv->is_50hz ? 576 : 480);
h = max(h, 2);
h = max(h, min_h);
ivtv_g_fmt_vid_cap(file, fh, fmt);
fmt->fmt.pix.width = w;
fmt->fmt.pix.height = h;