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/* 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:
return valueOrTuple<Rectangle>(cv);
case ControlTypeSize: {
const Size *v = reinterpret_cast<const Size *>(cv.data().data());
return py::cast(v);
}
case ControlTypeNone:
return py::none();
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 controlValueMaybeArray<Rectangle>(ob);
case ControlTypeSize:
return ControlValue(ob.cast<Size>());
case ControlTypeNone:
return ControlValue();
default:
throw std::runtime_error("Control type not implemented");
}
}
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