v4l2: Remove internal thread

Now that libcamera creates threads internally and doesn't rely on an
application-provided event loop, remove the thread from the V4L2
compatibility layer. The split between the V4L2CameraProxy and
V4L2Camera classes is still kept to separate the V4L2 adaptation from
camera operation. This may be further refactored later.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

1 files changed, 15 insertions, 28 deletions

diff --git a/src/v4l2/v4l2_camera_proxy.cpp b/src/v4l2/v4l2_camera_proxy.cpp
index e58fd6a0..62252047 100644
--- a/src/v4l2/v4l2_camera_proxy.cpp
+++ b/src/v4l2/v4l2_camera_proxy.cpp
@@ -41,8 +41,7 @@ int V4L2CameraProxy::open(bool nonBlocking)
 {
 	LOG(V4L2Compat, Debug) << "Servicing open";
 
-	int ret = vcam_->invokeMethod(&V4L2Camera::open,
-				      ConnectionTypeBlocking);
+	int ret = vcam_->open();
 	if (ret < 0) {
 		errno = -ret;
 		return -1;
@@ -50,8 +49,7 @@ int V4L2CameraProxy::open(bool nonBlocking)
 
 	nonBlocking_ = nonBlocking;
 
-	vcam_->invokeMethod(&V4L2Camera::getStreamConfig,
-			    ConnectionTypeBlocking, &streamConfig_);
+	vcam_->getStreamConfig(&streamConfig_);
 	setFmtFromConfig(streamConfig_);
 	sizeimage_ = calculateSizeImage(streamConfig_);
 
@@ -72,7 +70,7 @@ void V4L2CameraProxy::close()
 	if (--refcount_ > 0)
 		return;
 
-	vcam_->invokeMethod(&V4L2Camera::close, ConnectionTypeBlocking);
+	vcam_->close();
 }
 
 void *V4L2CameraProxy::mmap(void *addr, size_t length, int prot, int flags,
@@ -284,11 +282,9 @@ int V4L2CameraProxy::vidioc_s_fmt(struct v4l2_format *arg)
 	tryFormat(arg);
 
 	Size size(arg->fmt.pix.width, arg->fmt.pix.height);
-	int ret = vcam_->invokeMethod(&V4L2Camera::configure,
-				      ConnectionTypeBlocking,
-				      &streamConfig_, size,
-				      v4l2ToDrm(arg->fmt.pix.pixelformat),
-				      bufferCount_);
+	int ret = vcam_->configure(&streamConfig_, size,
+				   v4l2ToDrm(arg->fmt.pix.pixelformat),
+				   bufferCount_);
 	if (ret < 0)
 		return -EINVAL;
 
@@ -319,13 +315,12 @@ int V4L2CameraProxy::freeBuffers()
 {
 	LOG(V4L2Compat, Debug) << "Freeing libcamera bufs";
 
-	int ret = vcam_->invokeMethod(&V4L2Camera::streamOff,
-				      ConnectionTypeBlocking);
+	int ret = vcam_->streamOff();
 	if (ret < 0) {
 		LOG(V4L2Compat, Error) << "Failed to stop stream";
 		return ret;
 	}
-	vcam_->invokeMethod(&V4L2Camera::freeBuffers, ConnectionTypeBlocking);
+	vcam_->freeBuffers();
 	bufferCount_ = 0;
 
 	return 0;
@@ -349,11 +344,9 @@ int V4L2CameraProxy::vidioc_reqbufs(struct v4l2_requestbuffers *arg)
 		return freeBuffers();
 
 	Size size(curV4L2Format_.fmt.pix.width, curV4L2Format_.fmt.pix.height);
-	ret = vcam_->invokeMethod(&V4L2Camera::configure,
-				  ConnectionTypeBlocking,
-				  &streamConfig_, size,
-				  v4l2ToDrm(curV4L2Format_.fmt.pix.pixelformat),
-				  arg->count);
+	ret = vcam_->configure(&streamConfig_, size,
+			       v4l2ToDrm(curV4L2Format_.fmt.pix.pixelformat),
+			       arg->count);
 	if (ret < 0)
 		return -EINVAL;
 
@@ -366,8 +359,7 @@ int V4L2CameraProxy::vidioc_reqbufs(struct v4l2_requestbuffers *arg)
 	arg->count = streamConfig_.bufferCount;
 	bufferCount_ = arg->count;
 
-	ret = vcam_->invokeMethod(&V4L2Camera::allocBuffers,
-				  ConnectionTypeBlocking, arg->count);
+	ret = vcam_->allocBuffers(arg->count);
 	if (ret < 0) {
 		arg->count = 0;
 		return ret;
@@ -415,8 +407,7 @@ int V4L2CameraProxy::vidioc_qbuf(struct v4l2_buffer *arg)
 	    arg->index >= bufferCount_)
 		return -EINVAL;
 
-	int ret = vcam_->invokeMethod(&V4L2Camera::qbuf, ConnectionTypeBlocking,
-				      arg->index);
+	int ret = vcam_->qbuf(arg->index);
 	if (ret < 0)
 		return ret;
 
@@ -459,10 +450,7 @@ int V4L2CameraProxy::vidioc_streamon(int *arg)
 	if (!validateBufferType(*arg))
 		return -EINVAL;
 
-	int ret = vcam_->invokeMethod(&V4L2Camera::streamOn,
-				      ConnectionTypeBlocking);
-
-	return ret;
+	return vcam_->streamOn();
 }
 
 int V4L2CameraProxy::vidioc_streamoff(int *arg)
@@ -472,8 +460,7 @@ int V4L2CameraProxy::vidioc_streamoff(int *arg)
 	if (!validateBufferType(*arg))
 		return -EINVAL;
 
-	int ret = vcam_->invokeMethod(&V4L2Camera::streamOff,
-				      ConnectionTypeBlocking);
+	int ret = vcam_->streamOff();
 
 	for (struct v4l2_buffer &buf : buffers_)
 		buf.flags &= ~(V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE);