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libcamera: v4l2_device: Add support for META_OUTPUT

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Add support for output devices that expose the META_OUTPUT capabilities.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Jacopo Mondi
2019-05-24 08:47:51 +02:00
parent 74a56fe51a
commit 81e004e0ff
2 changed files with 17 additions and 2 deletions
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9
src/libcamera/v4l2_device.cpp
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@@ -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;