libcamera: pipeline: Introduce skeleton Vivid Pipeline

Provide all of the skeleton stubs to succesfully compile
and register a new Pipeline Handler for the Vivid test device.

Meson must be reconfigured to ensure that this pipeline handler is
included in the selected pipelines configuration, and after building, we
can test that the PipelineHandler is successfully registered by listing
the cameras on the system with LIBCAMERA_LOG_LEVELS enabled:

"""
LIBCAMERA_LOG_LEVELS=Pipeline:0 ./build-vivid/src/cam/cam -l
[230:30:03.624102821] [2867886] DEBUG Pipeline pipeline_handler.cpp:680 Registered pipeline handler "PipelineHandlerVivid"
Available cameras:
"""

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

2 files changed, 85 insertions, 0 deletions

diff --git a/src/libcamera/pipeline/vivid/meson.build b/src/libcamera/pipeline/vivid/meson.build
new file mode 100644
index 00000000..086bb825
--- /dev/null
+++ b/src/libcamera/pipeline/vivid/meson.build
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: CC0-1.0
+
+libcamera_sources += files([
+    'vivid.cpp',
+])
diff --git a/src/libcamera/pipeline/vivid/vivid.cpp b/src/libcamera/pipeline/vivid/vivid.cpp
new file mode 100644
index 00000000..6bf12783
--- /dev/null
+++ b/src/libcamera/pipeline/vivid/vivid.cpp
@@ -0,0 +1,80 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2020, Google Inc.
+ *
+ * vivid.cpp - Pipeline handler for the vivid capture device
+ */
+
+#include <libcamera/base/log.h>
+
+#include "libcamera/internal/camera.h"
+#include "libcamera/internal/pipeline_handler.h"
+
+namespace libcamera {
+
+LOG_DEFINE_CATEGORY(VIVID)
+
+class PipelineHandlerVivid : public PipelineHandler
+{
+public:
+	PipelineHandlerVivid(CameraManager *manager);
+
+	std::unique_ptr<CameraConfiguration>
+		generateConfiguration(Camera *camera, Span<const StreamRole> roles) override;
+	int configure(Camera *camera, CameraConfiguration *config) override;
+
+	int exportFrameBuffers(Camera *camera, Stream *stream,
+			       std::vector<std::unique_ptr<FrameBuffer>> *buffers) override;
+
+	int start(Camera *camera, const ControlList *controls) override;
+	void stopDevice(Camera *camera) override;
+
+	int queueRequestDevice(Camera *camera, Request *request) override;
+
+	bool match(DeviceEnumerator *enumerator) override;
+};
+
+PipelineHandlerVivid::PipelineHandlerVivid(CameraManager *manager)
+	: PipelineHandler(manager)
+{
+}
+
+std::unique_ptr<CameraConfiguration>
+PipelineHandlerVivid::generateConfiguration(Camera *camera, Span<const StreamRole> roles)
+{
+	return std::unique_ptr<CameraConfiguration>(nullptr);
+}
+
+int PipelineHandlerVivid::configure(Camera *camera, CameraConfiguration *config)
+{
+	return -1;
+}
+
+int PipelineHandlerVivid::exportFrameBuffers(Camera *camera, Stream *stream,
+					     std::vector<std::unique_ptr<FrameBuffer>> *buffers)
+{
+	return -1;
+}
+
+int PipelineHandlerVivid::start(Camera *camera, const ControlList *controls)
+{
+	return -1;
+}
+
+void PipelineHandlerVivid::stopDevice(Camera *camera)
+{
+}
+
+int PipelineHandlerVivid::queueRequestDevice(Camera *camera, Request *request)
+{
+	return -1;
+}
+
+bool PipelineHandlerVivid::match(DeviceEnumerator *enumerator)
+{
+	return false;
+}
+
+REGISTER_PIPELINE_HANDLER(PipelineHandlerVivid, "vivid")
+
+} /* namespace libcamera */