[libcamera-devel] [PATCH 3/6] libcamera: v4l2_device: Identify single/multiplane

[Jacopo Mondi]

Add functions to V4L2Capability to identify if a V4L2 device supports
single or multiplane APIs.

Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>
---
 src/libcamera/include/v4l2_device.h |  6 +++--
 src/libcamera/v4l2_device.cpp       | 37 +++++++++++++++++++++++++----
 2 files changed, 37 insertions(+), 6 deletions(-)

diff --git a/src/libcamera/include/v4l2_device.h b/src/libcamera/include/v4l2_device.h
index 2787847..0101a4b 100644
--- a/src/libcamera/include/v4l2_device.h
+++ b/src/libcamera/include/v4l2_device.h
@@ -27,8 +27,10 @@ struct V4L2Capability final : v4l2_capability {
 		return reinterpret_cast<const char *>(v4l2_capability::bus_info);
 	}
 
-	bool isCapture() const { return capabilities & V4L2_CAP_VIDEO_CAPTURE; }
-	bool isOutput() const { return capabilities & V4L2_CAP_VIDEO_OUTPUT; }
+	bool isSinglePlane() const;
+	bool isMultiPlane() const;
+	bool isCapture() const;
+	bool isOutput() const;
 	bool hasStreaming() const { return capabilities & V4L2_CAP_STREAMING; }
 };
 
diff --git a/src/libcamera/v4l2_device.cpp b/src/libcamera/v4l2_device.cpp
index aef0996..7cd89d7 100644
--- a/src/libcamera/v4l2_device.cpp
+++ b/src/libcamera/v4l2_device.cpp
@@ -47,17 +47,46 @@ namespace libcamera {
  * \return The string containing the device location
  */
 
+
+/**
+ * \brief Identify if the device implements V4L2 single plane APIs
+ * \return true if the device supports single plane APIs
+ */
+bool V4L2Capability::isSinglePlane() const
+{
+	return (capabilities & V4L2_CAP_VIDEO_CAPTURE) ||
+	       (capabilities & V4L2_CAP_VIDEO_OUTPUT);
+}
+
+/**
+ * \brief Identify if the device implements V4L2 multiplanar APIs
+ * \return true if the device supports multiplanar APIs
+ */
+bool V4L2Capability::isMultiPlane() const
+{
+	return (capabilities & V4L2_CAP_VIDEO_CAPTURE_MPLANE) ||
+	       (capabilities & V4L2_CAP_VIDEO_OUTPUT_MPLANE);
+}
+
 /**
- * \fn bool V4L2Capability::isCapture()
  * \brief Identify if the device is capable of capturing video
- * \return True if the device can capture video frames
+ * \return true if the device can capture video frames
  */
+bool V4L2Capability::isCapture() const
+{
+	return (capabilities & V4L2_CAP_VIDEO_CAPTURE) ||
+	       (capabilities & V4L2_CAP_VIDEO_CAPTURE_MPLANE);
+}
 
 /**
- * \fn bool V4L2Capability::isOutput()
  * \brief Identify if the device is capable of outputting video
- * \return True if the device can output video frames
+ * \return true if the device can capture video frames
  */
+bool V4L2Capability::isOutput() const
+{
+	return (capabilities & V4L2_CAP_VIDEO_OUTPUT) ||
+	       (capabilities & V4L2_CAP_VIDEO_OUTPUT_MPLANE);
+}
 
 /**
  * \fn bool V4L2Capability::hasStreaming()
-- 
2.20.1