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| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2017-06-16 08:38:31 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2018-12-14 05:10:48 -0500 |
| commit | 72148d1a57e7c76745e68c94ad5d235240d26ac8 (patch) | |
| tree | 763aa6efc8e8d4802fa69608f4565b03670bc46b /drivers/media/v4l2-core/v4l2-ioctl.c | |
| parent | fa09d06522ceac428fdc5c2b57c572f6cfd0a8bb (diff) | |
| download | linux-72148d1a57e7c76745e68c94ad5d235240d26ac8.tar.gz | |
media: v4l: Add support for V4L2_BUF_TYPE_META_OUTPUT
The V4L2_BUF_TYPE_META_OUTPUT mirrors the V4L2_BUF_TYPE_META_CAPTURE with
the exception that it is an OUTPUT type. The use case for this is to pass
buffers to the device that are not image data but metadata. The formats,
just as the metadata capture formats, are typically device specific and
highly structured.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Tested-by: Tian Shu Qiu <tian.shu.qiu@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/v4l2-core/v4l2-ioctl.c')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-ioctl.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index ef58bc31bfde..1441a73ce64c 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -194,6 +194,7 @@ const char *v4l2_type_names[] = { [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap", [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out", [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap", + [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out", }; EXPORT_SYMBOL(v4l2_type_names); @@ -366,6 +367,7 @@ static void v4l_print_format(const void *arg, bool write_only) (sdr->pixelformat >> 24) & 0xff); break; case V4L2_BUF_TYPE_META_CAPTURE: + case V4L2_BUF_TYPE_META_OUTPUT: meta = &p->fmt.meta; pr_cont(", dataformat=%c%c%c%c, buffersize=%u\n", (meta->dataformat >> 0) & 0xff, @@ -999,6 +1001,10 @@ static int check_fmt(struct file *file, enum v4l2_buf_type type) if (is_vid && is_rx && ops->vidioc_g_fmt_meta_cap) return 0; break; + case V4L2_BUF_TYPE_META_OUTPUT: + if (is_vid && is_tx && ops->vidioc_g_fmt_meta_out) + return 0; + break; default: break; } @@ -1410,6 +1416,11 @@ static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, break; ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg); break; + case V4L2_BUF_TYPE_META_OUTPUT: + if (unlikely(!ops->vidioc_enum_fmt_meta_out)) + break; + ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg); + break; } if (ret == 0) v4l_fill_fmtdesc(p); @@ -1488,6 +1499,8 @@ static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, return ops->vidioc_g_fmt_sdr_out(file, fh, arg); case V4L2_BUF_TYPE_META_CAPTURE: return ops->vidioc_g_fmt_meta_cap(file, fh, arg); + case V4L2_BUF_TYPE_META_OUTPUT: + return ops->vidioc_g_fmt_meta_out(file, fh, arg); } return -EINVAL; } @@ -1601,6 +1614,11 @@ static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, break; CLEAR_AFTER_FIELD(p, fmt.meta); return ops->vidioc_s_fmt_meta_cap(file, fh, arg); + case V4L2_BUF_TYPE_META_OUTPUT: + if (unlikely(!ops->vidioc_s_fmt_meta_out)) + break; + CLEAR_AFTER_FIELD(p, fmt.meta); + return ops->vidioc_s_fmt_meta_out(file, fh, arg); } return -EINVAL; } @@ -1693,6 +1711,11 @@ static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, break; CLEAR_AFTER_FIELD(p, fmt.meta); return ops->vidioc_try_fmt_meta_cap(file, fh, arg); + case V4L2_BUF_TYPE_META_OUTPUT: + if (unlikely(!ops->vidioc_try_fmt_meta_out)) + break; + CLEAR_AFTER_FIELD(p, fmt.meta); + return ops->vidioc_try_fmt_meta_out(file, fh, arg); } return -EINVAL; } |