py: Move ControlValue helpers to py_helpers.cpp

Clean up the py_main.cpp a bit by moving the ControlValue helpers to a
separate file.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

4 files changed, 113 insertions, 81 deletions

diff --git a/src/py/libcamera/meson.build b/src/py/libcamera/meson.build
index eb884538..04578bac 100644
--- a/src/py/libcamera/meson.build
+++ b/src/py/libcamera/meson.build
@@ -15,6 +15,7 @@ pybind11_dep = pybind11_proj.get_variable('pybind11_dep')
 pycamera_sources = files([
     'py_enums.cpp',
     'py_geometry.cpp',
+    'py_helpers.cpp',
     'py_main.cpp',
 ])
 
diff --git a/src/py/libcamera/py_helpers.cpp b/src/py/libcamera/py_helpers.cpp
new file mode 100644
index 00000000..45aecce9
--- /dev/null
+++ b/src/py/libcamera/py_helpers.cpp
@@ -0,0 +1,97 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2022, Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+ */
+
+#include "py_helpers.h"
+
+#include <libcamera/libcamera.h>
+
+#include <pybind11/functional.h>
+#include <pybind11/stl.h>
+#include <pybind11/stl_bind.h>
+
+namespace py = pybind11;
+
+using namespace libcamera;
+
+template<typename T>
+static py::object valueOrTuple(const ControlValue &cv)
+{
+	if (cv.isArray()) {
+		const T *v = reinterpret_cast<const T *>(cv.data().data());
+		auto t = py::tuple(cv.numElements());
+
+		for (size_t i = 0; i < cv.numElements(); ++i)
+			t[i] = v[i];
+
+		return std::move(t);
+	}
+
+	return py::cast(cv.get<T>());
+}
+
+py::object controlValueToPy(const ControlValue &cv)
+{
+	switch (cv.type()) {
+	case ControlTypeBool:
+		return valueOrTuple<bool>(cv);
+	case ControlTypeByte:
+		return valueOrTuple<uint8_t>(cv);
+	case ControlTypeInteger32:
+		return valueOrTuple<int32_t>(cv);
+	case ControlTypeInteger64:
+		return valueOrTuple<int64_t>(cv);
+	case ControlTypeFloat:
+		return valueOrTuple<float>(cv);
+	case ControlTypeString:
+		return py::cast(cv.get<std::string>());
+	case ControlTypeRectangle: {
+		const Rectangle *v = reinterpret_cast<const Rectangle *>(cv.data().data());
+		return py::cast(v);
+	}
+	case ControlTypeSize: {
+		const Size *v = reinterpret_cast<const Size *>(cv.data().data());
+		return py::cast(v);
+	}
+	case ControlTypeNone:
+	default:
+		throw std::runtime_error("Unsupported ControlValue type");
+	}
+}
+
+template<typename T>
+static ControlValue controlValueMaybeArray(const py::object &ob)
+{
+	if (py::isinstance<py::list>(ob) || py::isinstance<py::tuple>(ob)) {
+		std::vector<T> vec = ob.cast<std::vector<T>>();
+		return ControlValue(Span<const T>(vec));
+	}
+
+	return ControlValue(ob.cast<T>());
+}
+
+ControlValue pyToControlValue(const py::object &ob, ControlType type)
+{
+	switch (type) {
+	case ControlTypeBool:
+		return ControlValue(ob.cast<bool>());
+	case ControlTypeByte:
+		return controlValueMaybeArray<uint8_t>(ob);
+	case ControlTypeInteger32:
+		return controlValueMaybeArray<int32_t>(ob);
+	case ControlTypeInteger64:
+		return controlValueMaybeArray<int64_t>(ob);
+	case ControlTypeFloat:
+		return controlValueMaybeArray<float>(ob);
+	case ControlTypeString:
+		return ControlValue(ob.cast<std::string>());
+	case ControlTypeRectangle:
+		return ControlValue(ob.cast<Rectangle>());
+	case ControlTypeSize:
+		return ControlValue(ob.cast<Size>());
+	case ControlTypeNone:
+	default:
+		throw std::runtime_error("Control type not implemented");
+	}
+}
diff --git a/src/py/libcamera/py_helpers.h b/src/py/libcamera/py_helpers.h
new file mode 100644
index 00000000..cd31e2cc
--- /dev/null
+++ b/src/py/libcamera/py_helpers.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2022, Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+ */
+
+#pragma once
+
+#include <libcamera/libcamera.h>
+
+#include <pybind11/smart_holder.h>
+
+pybind11::object controlValueToPy(const libcamera::ControlValue &cv);
+libcamera::ControlValue pyToControlValue(const pybind11::object &ob, libcamera::ControlType type);
diff --git a/src/py/libcamera/py_main.cpp b/src/py/libcamera/py_main.cpp
index 4b698f77..e652837f 100644
--- a/src/py/libcamera/py_main.cpp
+++ b/src/py/libcamera/py_main.cpp
@@ -21,6 +21,8 @@
 #include <pybind11/stl.h>
 #include <pybind11/stl_bind.h>
 
+#include "py_helpers.h"
+
 namespace py = pybind11;
 
 using namespace libcamera;
@@ -31,87 +33,6 @@ LOG_DEFINE_CATEGORY(Python)
 
 }
 
-template<typename T>
-static py::object valueOrTuple(const ControlValue &cv)
-{
-	if (cv.isArray()) {
-		const T *v = reinterpret_cast<const T *>(cv.data().data());
-		auto t = py::tuple(cv.numElements());
-
-		for (size_t i = 0; i < cv.numElements(); ++i)
-			t[i] = v[i];
-
-		return std::move(t);
-	}
-
-	return py::cast(cv.get<T>());
-}
-
-static py::object controlValueToPy(const ControlValue &cv)
-{
-	switch (cv.type()) {
-	case ControlTypeBool:
-		return valueOrTuple<bool>(cv);
-	case ControlTypeByte:
-		return valueOrTuple<uint8_t>(cv);
-	case ControlTypeInteger32:
-		return valueOrTuple<int32_t>(cv);
-	case ControlTypeInteger64:
-		return valueOrTuple<int64_t>(cv);
-	case ControlTypeFloat:
-		return valueOrTuple<float>(cv);
-	case ControlTypeString:
-		return py::cast(cv.get<std::string>());
-	case ControlTypeRectangle: {
-		const Rectangle *v = reinterpret_cast<const Rectangle *>(cv.data().data());
-		return py::cast(v);
-	}
-	case ControlTypeSize: {
-		const Size *v = reinterpret_cast<const Size *>(cv.data().data());
-		return py::cast(v);
-	}
-	case ControlTypeNone:
-	default:
-		throw std::runtime_error("Unsupported ControlValue type");
-	}
-}
-
-template<typename T>
-static ControlValue controlValueMaybeArray(const py::object &ob)
-{
-	if (py::isinstance<py::list>(ob) || py::isinstance<py::tuple>(ob)) {
-		std::vector<T> vec = ob.cast<std::vector<T>>();
-		return ControlValue(Span<const T>(vec));
-	}
-
-	return ControlValue(ob.cast<T>());
-}
-
-static ControlValue pyToControlValue(const py::object &ob, ControlType type)
-{
-	switch (type) {
-	case ControlTypeBool:
-		return ControlValue(ob.cast<bool>());
-	case ControlTypeByte:
-		return controlValueMaybeArray<uint8_t>(ob);
-	case ControlTypeInteger32:
-		return controlValueMaybeArray<int32_t>(ob);
-	case ControlTypeInteger64:
-		return controlValueMaybeArray<int64_t>(ob);
-	case ControlTypeFloat:
-		return controlValueMaybeArray<float>(ob);
-	case ControlTypeString:
-		return ControlValue(ob.cast<std::string>());
-	case ControlTypeRectangle:
-		return ControlValue(ob.cast<Rectangle>());
-	case ControlTypeSize:
-		return ControlValue(ob.cast<Size>());
-	case ControlTypeNone:
-	default:
-		throw std::runtime_error("Control type not implemented");
-	}
-}
-
 static std::weak_ptr<CameraManager> gCameraManager;
 static int gEventfd;
 static std::mutex gReqlistMutex;