The zr36067 driver should return the actual bytes-per-line value when
queried with ioctl VIDIOC_G_FMT, instead of 0. Otherwise user-space
applications can get confused.
Likewise, with ioctl VIDIOC_S_FMT, we are supposed to fill the
bytes-per-line value. And we shouldn't fail if the caller sets the
initial value to something different from 0. This is perfectly valid
for applications to pre-fill this field with the value they expect.
Signed-off-by: Jean Delvare <[EMAIL PROTECTED]>
Cc: Ronald S. Bultje <[EMAIL PROTECTED]>
---
drivers/media/video/zoran_driver.c | 13 +++++--------
1 file changed, 5 insertions(+), 8 deletions(-)
--- linux-2.6.27-rc5.orig/drivers/media/video/zoran_driver.c 2008-09-04
09:11:25.000000000 +0200
+++ linux-2.6.27-rc5/drivers/media/video/zoran_driver.c 2008-09-04
14:12:40.000000000 +0200
@@ -2621,7 +2621,8 @@ zoran_do_ioctl (struct inode *inode,
fh->v4l_settings.format->fourcc;
fmt->fmt.pix.colorspace =
fh->v4l_settings.format->colorspace;
- fmt->fmt.pix.bytesperline = 0;
+ fmt->fmt.pix.bytesperline =
+ fh->v4l_settings.bytesperline;
if (BUZ_MAX_HEIGHT <
(fh->v4l_settings.height * 2))
fmt->fmt.pix.field =
@@ -2717,13 +2718,6 @@ zoran_do_ioctl (struct inode *inode,
fmt->fmt.pix.pixelformat,
(char *) &printformat);
- if (fmt->fmt.pix.bytesperline > 0) {
- dprintk(5,
- KERN_ERR "%s: bpl not supported\n",
- ZR_DEVNAME(zr));
- return -EINVAL;
- }
-
/* we can be requested to do JPEG/raw playback/capture
*/
if (!
(fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
@@ -2807,6 +2801,7 @@ zoran_do_ioctl (struct inode *inode,
fh->jpg_buffers.buffer_size =
zoran_v4l2_calc_bufsize(&fh->
jpg_settings);
+ fmt->fmt.pix.bytesperline = 0;
fmt->fmt.pix.sizeimage =
fh->jpg_buffers.buffer_size;
@@ -2863,6 +2858,8 @@ zoran_do_ioctl (struct inode *inode,
/* tell the user the
* results/missing stuff */
+ fmt->fmt.pix.bytesperline =
+ fh->v4l_settings.bytesperline;
fmt->fmt.pix.sizeimage =
fh->v4l_settings.height *
fh->v4l_settings.bytesperline;
--
Jean Delvare
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