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-rw-r--r--src/v4l2/v4l2_camera_proxy.cpp30
-rw-r--r--src/v4l2/v4l2_camera_proxy.h1
2 files changed, 31 insertions, 0 deletions
diff --git a/src/v4l2/v4l2_camera_proxy.cpp b/src/v4l2/v4l2_camera_proxy.cpp
index c1375777..4d529bc2 100644
--- a/src/v4l2/v4l2_camera_proxy.cpp
+++ b/src/v4l2/v4l2_camera_proxy.cpp
@@ -624,6 +624,32 @@ int V4L2CameraProxy::vidioc_dqbuf(V4L2CameraFile *file, struct v4l2_buffer *arg,
return 0;
}
+int V4L2CameraProxy::vidioc_expbuf(V4L2CameraFile *file, struct v4l2_exportbuffer *arg)
+{
+ LOG(V4L2Compat, Debug) << "Servicing vidioc_expbuf fd = " << file->efd();
+
+ if (!hasOwnership(file))
+ return -EBUSY;
+
+ /* \todo Verify that the memory type is MMAP when adding DMABUF support */
+ if (!validateBufferType(arg->type))
+ return -EINVAL;
+
+ if (arg->index >= bufferCount_)
+ return -EINVAL;
+
+ if (arg->flags & ~(O_CLOEXEC | O_ACCMODE))
+ return -EINVAL;
+
+ memset(arg->reserved, 0, sizeof(arg->reserved));
+
+ /* \todo honor the O_ACCMODE flags passed to this function */
+ arg->fd = fcntl(vcam_->getBufferFd(arg->index),
+ arg->flags & O_CLOEXEC ? F_DUPFD_CLOEXEC : F_DUPFD, 0);
+
+ return 0;
+}
+
int V4L2CameraProxy::vidioc_streamon(V4L2CameraFile *file, int *arg)
{
LOG(V4L2Compat, Debug) << "Servicing vidioc_streamon fd = " << file->efd();
@@ -685,6 +711,7 @@ const std::set<unsigned long> V4L2CameraProxy::supportedIoctls_ = {
VIDIOC_QUERYBUF,
VIDIOC_QBUF,
VIDIOC_DQBUF,
+ VIDIOC_EXPBUF,
VIDIOC_STREAMON,
VIDIOC_STREAMOFF,
};
@@ -755,6 +782,9 @@ int V4L2CameraProxy::ioctl(V4L2CameraFile *file, unsigned long request, void *ar
case VIDIOC_DQBUF:
ret = vidioc_dqbuf(file, static_cast<struct v4l2_buffer *>(arg), &proxyMutex_);
break;
+ case VIDIOC_EXPBUF:
+ ret = vidioc_expbuf(file, static_cast<struct v4l2_exportbuffer *>(arg));
+ break;
case VIDIOC_STREAMON:
ret = vidioc_streamon(file, static_cast<int *>(arg));
break;
diff --git a/src/v4l2/v4l2_camera_proxy.h b/src/v4l2/v4l2_camera_proxy.h
index fa0a49e0..14e027c3 100644
--- a/src/v4l2/v4l2_camera_proxy.h
+++ b/src/v4l2/v4l2_camera_proxy.h
@@ -60,6 +60,7 @@ private:
int vidioc_qbuf(V4L2CameraFile *file, struct v4l2_buffer *arg);
int vidioc_dqbuf(V4L2CameraFile *file, struct v4l2_buffer *arg,
libcamera::Mutex *lock) LIBCAMERA_TSA_REQUIRES(*lock);
+ int vidioc_expbuf(V4L2CameraFile *file, struct v4l2_exportbuffer *arg);
int vidioc_streamon(V4L2CameraFile *file, int *arg);
int vidioc_streamoff(V4L2CameraFile *file, int *arg);