[libcamera-devel] [PATCH v2 2/6] libcamera: v4l2_device: Add support for META_OUTPUT
Jacopo Mondi
jacopo at jmondi.org
Mon May 27 11:05:55 CEST 2019
Add support for output devices that expose the META_OUTPUT capabilities.
Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
---
src/libcamera/include/v4l2_device.h | 10 ++++++++--
src/libcamera/v4l2_device.cpp | 9 +++++++++
2 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/src/libcamera/include/v4l2_device.h b/src/libcamera/include/v4l2_device.h
index 2e7bd1e7f4cc..cecafa151caa 100644
--- a/src/libcamera/include/v4l2_device.h
+++ b/src/libcamera/include/v4l2_device.h
@@ -59,7 +59,8 @@ struct V4L2Capability final : v4l2_capability {
bool isOutput() const
{
return device_caps() & (V4L2_CAP_VIDEO_OUTPUT |
- V4L2_CAP_VIDEO_OUTPUT_MPLANE);
+ V4L2_CAP_VIDEO_OUTPUT_MPLANE |
+ V4L2_CAP_META_OUTPUT);
}
bool isVideo() const
{
@@ -70,7 +71,8 @@ struct V4L2Capability final : v4l2_capability {
}
bool isMeta() const
{
- return device_caps() & V4L2_CAP_META_CAPTURE;
+ return device_caps() & (V4L2_CAP_META_CAPTURE |
+ V4L2_CAP_META_OUTPUT);
}
bool isVideoCapture() const
{
@@ -84,6 +86,10 @@ struct V4L2Capability final : v4l2_capability {
{
return isMeta() && isCapture();
}
+ bool isMetaOutput() const
+ {
+ return isMeta() && isOutput();
+ }
bool hasStreaming() const
{
return device_caps() & V4L2_CAP_STREAMING;
diff --git a/src/libcamera/v4l2_device.cpp b/src/libcamera/v4l2_device.cpp
index 8366ffc4db55..e42f6ef0c340 100644
--- a/src/libcamera/v4l2_device.cpp
+++ b/src/libcamera/v4l2_device.cpp
@@ -116,6 +116,12 @@ LOG_DEFINE_CATEGORY(V4L2)
* \return True if the device can capture image meta-data
*/
+/**
+ * \fn V4L2Capability::isMetaOutput()
+ * \brief Identify if the device outputs image meta-data
+ * \return True if the device can output image meta-data
+ */
+
/**
* \fn V4L2Capability::hasStreaming()
* \brief Determine if the device can perform Streaming I/O
@@ -348,6 +354,9 @@ int V4L2Device::open()
} else if (caps_.isMetaCapture()) {
fdEvent_ = new EventNotifier(fd_, EventNotifier::Read);
bufferType_ = V4L2_BUF_TYPE_META_CAPTURE;
+ } else if (caps_.isMetaOutput()) {
+ fdEvent_ = new EventNotifier(fd_, EventNotifier::Write);
+ bufferType_ = V4L2_BUF_TYPE_META_OUTPUT;
} else {
LOG(V4L2, Error) << "Device is not a supported type";
return -EINVAL;
--
2.21.0
More information about the libcamera-devel
mailing list