On Saturday 24 January 2009 18:03:51 Shah, Hardik wrote:
> > -----Original Message-----
> > From: Shah, Hardik
> > Sent: Wednesday, January 21, 2009 5:24 PM
> > To: video4linux-l...@redhat.com; linux-media@vger.kernel.org
> > Cc: Shah, Hardik; Jadav, Brijesh R; Nagalla, Hari; Hadli, Manjunath; R,
> > Sivaraj; Hiremath, Vaibhav
> > Subject: [PATCH] New V4L2 ioctls for OMAP class of Devices
> >
> > 1. Control ID added for rotation. Same as HFLIP.
> > 2. Control ID added for setting background color on
> > output device.
> > 3. New ioctl added for setting the color space conversion from
> > YUV to RGB.
> >
> > Signed-off-by: Brijesh Jadav <brijes...@ti.com>
> > Signed-off-by: Hari Nagalla <hnaga...@ti.com>
> > Signed-off-by: Hardik Shah <hardik.s...@ti.com>
> > Signed-off-by: Manjunath Hadli <m...@ti.com>
> > Signed-off-by: R Sivaraj <siva...@ti.com>
> > Signed-off-by: Vaibhav Hiremath <hvaib...@ti.com>
> > ---
> > linux/drivers/media/video/v4l2-ioctl.c | 19 ++++++++++++++++++-
> > linux/include/linux/videodev2.h | 19 ++++++++++++++++++-
> > linux/include/media/v4l2-ioctl.h | 4 ++++
> > 3 files changed, 40 insertions(+), 2 deletions(-)
> >
> > diff --git a/linux/drivers/media/video/v4l2-ioctl.c
> > b/linux/drivers/media/video/v4l2-ioctl.c
> > index 165bc90..7599da8 100644
> > --- a/linux/drivers/media/video/v4l2-ioctl.c
> > +++ b/linux/drivers/media/video/v4l2-ioctl.c
> > @@ -270,6 +270,8 @@ static const char *v4l2_ioctls[] = {
> > [_IOC_NR(VIDIOC_DBG_G_CHIP_IDENT)] = "VIDIOC_DBG_G_CHIP_IDENT",
> > [_IOC_NR(VIDIOC_S_HW_FREQ_SEEK)] = "VIDIOC_S_HW_FREQ_SEEK",
> > #endif
> > + [_IOC_NR(VIDIOC_S_COLOR_SPACE_CONV)] = "VIDIOC_S_COLOR_SPACE_CONV",
> > + [_IOC_NR(VIDIOC_G_COLOR_SPACE_CONV)] = "VIDIOC_G_COLOR_SPACE_CONV",
> > };
> > #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
> >
> > @@ -1838,7 +1840,22 @@ static long __video_do_ioctl(struct file *file,
> > }
> > break;
> > }
> > -
> > + case VIDIOC_S_COLOR_SPACE_CONV:
> > + {
> > + struct v4l2_color_space_conversion *p = arg;
> > + if (!ops->vidioc_s_color_space_conv)
> > + break;
> > + ret = ops->vidioc_s_color_space_conv(file, fh, p);
> > + break;
> > + }
> > + case VIDIOC_G_COLOR_SPACE_CONV:
> > + {
> > + struct v4l2_color_space_conversion *p = arg;
> > + if (!ops->vidioc_g_color_space_conv)
> > + break;
> > + ret = ops->vidioc_g_color_space_conv(file, fh, p);
> > + break;
> > + }
> > default:
> > {
> > if (!ops->vidioc_default)
> > diff --git a/linux/include/linux/videodev2.h
> > b/linux/include/linux/videodev2.h index b0c5010..9fbc3b0 100644
> > --- a/linux/include/linux/videodev2.h
> > +++ b/linux/include/linux/videodev2.h
> > @@ -879,8 +879,10 @@ enum v4l2_power_line_frequency {
> > #define V4L2_CID_BACKLIGHT_COMPENSATION (V4L2_CID_BASE+28)
> > #define V4L2_CID_CHROMA_AGC (V4L2_CID_BASE+29)
> > #define V4L2_CID_COLOR_KILLER (V4L2_CID_BASE+30)
> > +#define V4L2_CID_ROTATION (V4L2_CID_BASE+31)
> > +#define V4L2_CID_BG_COLOR (V4L2_CID_BASE+32)
> > /* last CID + 1 */
> > -#define V4L2_CID_LASTP1 (V4L2_CID_BASE+31)
> > +#define V4L2_CID_LASTP1 (V4L2_CID_BASE+33)
> >
> > /* MPEG-class control IDs defined by V4L2 */
> > #define V4L2_CID_MPEG_BASE (V4L2_CTRL_CLASS_MPEG |
> > 0x900)
> > @@ -1192,6 +1194,17 @@ struct v4l2_hw_freq_seek {
> > };
> >
> > /*
> > + * Color conversion
> > + * User needs to pass pointer to color conversion matrix
> > + * defined by hardware
> > + */
> > +struct v4l2_color_space_conversion {
> > + __s32 coefficients[3][3];
> > + __s32 const_factor;
> > + __s32 offsets[3];
> > +};
> > +
> > +/*
> > * A U D I O
> > */
> > struct v4l2_audio {
> > @@ -1493,9 +1506,13 @@ struct v4l2_chip_ident_old {
> > #endif
> >
> > #define VIDIOC_S_HW_FREQ_SEEK _IOW('V', 82, struct v4l2_hw_freq_seek)
> > +
> > +#define VIDIOC_S_COLOR_SPACE_CONV _IOW('V', 83, struct
> > v4l2_color_space_conversion)
> > +#define VIDIOC_G_COLOR_SPACE_CONV _IOR('V', 84, struct
> > v4l2_color_space_conversion)
> > /* Reminder: when adding new ioctls please add support for them to
> > drivers/media/video/v4l2-compat-ioctl32.c as well! */
> >
> > +
> > #ifdef __OLD_VIDIOC_
> > /* for compatibility, will go away some day */
> > #define VIDIOC_OVERLAY_OLD _IOWR('V', 14, int)
> > diff --git a/linux/include/media/v4l2-ioctl.h
> > b/linux/include/media/v4l2- ioctl.h
> > index b01c044..0c44ecf 100644
> > --- a/linux/include/media/v4l2-ioctl.h
> > +++ b/linux/include/media/v4l2-ioctl.h
> > @@ -241,6 +241,10 @@ struct v4l2_ioctl_ops {
> > /* For other private ioctls */
> > long (*vidioc_default) (struct file *file, void *fh,
> > int cmd, void *arg);
> > + int (*vidioc_s_color_space_conv) (struct file *file, void *fh,
> > + struct v4l2_color_space_conversion *a);
> > + int (*vidioc_g_color_space_conv) (struct file *file, void *fh,
> > + struct v4l2_color_space_conversion *a);
> > };
> >
> >
> > --
> > 1.5.6
>
> [Shah, Hardik] Hi,
> Any comments on this patch.
> Hans/Mauro,
> If possible can you integrate this onto your development branch.
Hi Hardik,
I've one question regarding the rotation control: I assume that this is
limited to 0, 90, 180 and 270 degrees? I think it might be better to
implement this as an enum in that case.
Regards,
Hans
--
Hans Verkuil - video4linux developer - sponsored by TANDBERG
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