From 39d491761956b9c0e8c01ba5fc0a27558b90016e Mon Sep 17 00:00:00 2001
From: Jacopo Mondi <jacopo@jmondi.org>
Date: Wed, 30 Mar 2022 11:08:43 +0200
Subject: libcamera: v4l2_subdevice: Collect subdev capabilities

Collect subdev capabilities at open() time.

Model the V4L2SubdevCapabilties as V4L2Capability from the video
device class.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
---
 include/libcamera/internal/v4l2_subdevice.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'include')

diff --git a/include/libcamera/internal/v4l2_subdevice.h b/include/libcamera/internal/v4l2_subdevice.h
index 2db392d5..a1d3144c 100644
--- a/include/libcamera/internal/v4l2_subdevice.h
+++ b/include/libcamera/internal/v4l2_subdevice.h
@@ -29,6 +29,17 @@ namespace libcamera {
 
 class MediaDevice;
 
+struct V4L2SubdeviceCapability final : v4l2_subdev_capability {
+	bool isReadOnly() const
+	{
+		return capabilities & V4L2_SUBDEV_CAP_RO_SUBDEV;
+	}
+	bool hasStreams() const
+	{
+		return capabilities & V4L2_SUBDEV_CAP_MPLEXED;
+	}
+};
+
 struct V4L2SubdeviceFormat {
 	uint32_t mbus_code;
 	Size size;
@@ -70,6 +81,7 @@ public:
 		      Whence whence = ActiveFormat);
 
 	const std::string &model();
+	const V4L2SubdeviceCapability &caps() const { return caps_; }
 
 	static std::unique_ptr<V4L2Subdevice>
 	fromEntityName(const MediaDevice *media, const std::string &entity);
@@ -87,6 +99,7 @@ private:
 	const MediaEntity *entity_;
 
 	std::string model_;
+	struct V4L2SubdeviceCapability caps_;
 };
 
 } /* namespace libcamera */
-- 
cgit v1.2.1