From 8a6b0541912412e6771d1fe12102bd514e7098e7 Mon Sep 17 00:00:00 2001
From: Kieran Bingham <kieran.bingham@ideasonboard.com>
Date: Fri, 10 Jul 2020 15:13:05 +0100
Subject: 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>
---
 meson_options.txt                        |  3 +-
 src/libcamera/pipeline/vivid/meson.build |  5 ++
 src/libcamera/pipeline/vivid/vivid.cpp   | 80 ++++++++++++++++++++++++++++++++
 3 files changed, 87 insertions(+), 1 deletion(-)
 create mode 100644 src/libcamera/pipeline/vivid/meson.build
 create mode 100644 src/libcamera/pipeline/vivid/vivid.cpp

diff --git a/meson_options.txt b/meson_options.txt
index 7aa41249..43e239f6 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -53,7 +53,8 @@ option('pipelines',
             'rpi/vc4',
             'simple',
             'uvcvideo',
-            'vimc'
+            'vimc',
+            'vivid',
         ],
         description : 'Select which pipeline handlers to build. If this is set to "auto", all the pipelines applicable to the target architecture will be built. If this is set to "all", all the pipelines will be built. If both are selected then "all" will take precedence.')
 
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 */
-- 
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