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-rw-r--r--meson.build1
-rw-r--r--meson_options.txt5
-rw-r--r--src/meson.build1
-rw-r--r--src/py/libcamera/__init__.py84
-rw-r--r--src/py/libcamera/meson.build52
-rw-r--r--src/py/libcamera/pyenums.cpp34
-rw-r--r--src/py/libcamera/pymain.cpp649
-rw-r--r--src/py/meson.build1
-rw-r--r--subprojects/.gitignore3
-rw-r--r--subprojects/packagefiles/pybind11/meson.build7
-rw-r--r--subprojects/pybind11.wrap9
11 files changed, 845 insertions, 1 deletions
diff --git a/meson.build b/meson.build
index ea0a4200..6d7d3ca6 100644
--- a/meson.build
+++ b/meson.build
@@ -177,6 +177,7 @@ summary({
'Tracing support': tracing_enabled,
'Android support': android_enabled,
'GStreamer support': gst_enabled,
+ 'Python bindings': pycamera_enabled,
'V4L2 emulation support': v4l2_enabled,
'cam application': cam_enabled,
'qcam application': qcam_enabled,
diff --git a/meson_options.txt b/meson_options.txt
index 2c80ad8b..ca00c78e 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -58,3 +58,8 @@ option('v4l2',
type : 'boolean',
value : false,
description : 'Compile the V4L2 compatibility layer')
+
+option('pycamera',
+ type : 'feature',
+ value : 'auto',
+ description : 'Enable libcamera Python bindings (experimental)')
diff --git a/src/meson.build b/src/meson.build
index e0ea9c35..34663a6f 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -37,4 +37,5 @@ subdir('cam')
subdir('qcam')
subdir('gstreamer')
+subdir('py')
subdir('v4l2')
diff --git a/src/py/libcamera/__init__.py b/src/py/libcamera/__init__.py
new file mode 100644
index 00000000..0d7da9e2
--- /dev/null
+++ b/src/py/libcamera/__init__.py
@@ -0,0 +1,84 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+# Copyright (C) 2022, Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+
+from ._libcamera import *
+
+
+class MappedFrameBuffer:
+ def __init__(self, fb):
+ self.__fb = fb
+
+ def __enter__(self):
+ import os
+ import mmap
+
+ fb = self.__fb
+
+ # Collect information about the buffers
+
+ bufinfos = {}
+
+ for i in range(fb.num_planes):
+ fd = fb.fd(i)
+
+ if fd not in bufinfos:
+ buflen = os.lseek(fd, 0, os.SEEK_END)
+ bufinfos[fd] = {'maplen': 0, 'buflen': buflen}
+ else:
+ buflen = bufinfos[fd]['buflen']
+
+ if fb.offset(i) > buflen or fb.offset(i) + fb.length(i) > buflen:
+ raise RuntimeError(f'plane is out of buffer: buffer length={buflen}, ' +
+ f'plane offset={fb.offset(i)}, plane length={fb.length(i)}')
+
+ bufinfos[fd]['maplen'] = max(bufinfos[fd]['maplen'], fb.offset(i) + fb.length(i))
+
+ # mmap the buffers
+
+ maps = []
+
+ for fd, info in bufinfos.items():
+ map = mmap.mmap(fd, info['maplen'], mmap.MAP_SHARED, mmap.PROT_READ | mmap.PROT_WRITE)
+ info['map'] = map
+ maps.append(map)
+
+ self.__maps = tuple(maps)
+
+ # Create memoryviews for the planes
+
+ planes = []
+
+ for i in range(fb.num_planes):
+ fd = fb.fd(i)
+ info = bufinfos[fd]
+
+ mv = memoryview(info['map'])
+
+ start = fb.offset(i)
+ end = fb.offset(i) + fb.length(i)
+
+ mv = mv[start:end]
+
+ planes.append(mv)
+
+ self.__planes = tuple(planes)
+
+ return self
+
+ def __exit__(self, exc_type, exc_value, exc_traceback):
+ for p in self.__planes:
+ p.release()
+
+ for mm in self.__maps:
+ mm.close()
+
+ @property
+ def planes(self):
+ return self.__planes
+
+
+def __FrameBuffer__mmap(self):
+ return MappedFrameBuffer(self)
+
+
+FrameBuffer.mmap = __FrameBuffer__mmap
diff --git a/src/py/libcamera/meson.build b/src/py/libcamera/meson.build
new file mode 100644
index 00000000..edf4a629
--- /dev/null
+++ b/src/py/libcamera/meson.build
@@ -0,0 +1,52 @@
+# SPDX-License-Identifier: CC0-1.0
+
+py3_dep = dependency('python3', required : get_option('pycamera'))
+
+if not py3_dep.found()
+ pycamera_enabled = false
+ subdir_done()
+endif
+
+pycamera_enabled = true
+
+pybind11_proj = subproject('pybind11')
+pybind11_dep = pybind11_proj.get_variable('pybind11_dep')
+
+pycamera_sources = files([
+ 'pyenums.cpp',
+ 'pymain.cpp',
+])
+
+pycamera_deps = [
+ libcamera_public,
+ py3_dep,
+ pybind11_dep,
+]
+
+pycamera_args = [
+ '-fvisibility=hidden',
+ '-Wno-shadow',
+ '-DPYBIND11_USE_SMART_HOLDER_AS_DEFAULT',
+ '-DLIBCAMERA_BASE_PRIVATE',
+]
+
+destdir = get_option('libdir') / ('python' + py3_dep.version()) / 'site-packages' / 'libcamera'
+
+pycamera = shared_module('_libcamera',
+ pycamera_sources,
+ install : true,
+ install_dir : destdir,
+ name_prefix : '',
+ dependencies : pycamera_deps,
+ cpp_args : pycamera_args)
+
+run_command('ln', '-fsT', '../../../../src/py/libcamera/__init__.py',
+ meson.current_build_dir() / '__init__.py',
+ check: true)
+
+install_data(['__init__.py'], install_dir : destdir)
+
+# \todo Generate stubs when building. See https://peps.python.org/pep-0484/#stub-files
+# Note: Depends on pybind11-stubgen. To generate pylibcamera stubs:
+# $ PYTHONPATH=build/src/py pybind11-stubgen --no-setup-py -o build/src/py libcamera
+# $ mv build/src/py/libcamera-stubs/* build/src/py/libcamera/
diff --git a/src/py/libcamera/pyenums.cpp b/src/py/libcamera/pyenums.cpp
new file mode 100644
index 00000000..b655e622
--- /dev/null
+++ b/src/py/libcamera/pyenums.cpp
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2022, Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+ *
+ * Python bindings - Enumerations
+ */
+
+#include <libcamera/libcamera.h>
+
+#include <pybind11/smart_holder.h>
+
+namespace py = pybind11;
+
+using namespace libcamera;
+
+void init_pyenums(py::module &m)
+{
+ py::enum_<StreamRole>(m, "StreamRole")
+ .value("StillCapture", StreamRole::StillCapture)
+ .value("Raw", StreamRole::Raw)
+ .value("VideoRecording", StreamRole::VideoRecording)
+ .value("Viewfinder", StreamRole::Viewfinder);
+
+ py::enum_<ControlType>(m, "ControlType")
+ .value("None", ControlType::ControlTypeNone)
+ .value("Bool", ControlType::ControlTypeBool)
+ .value("Byte", ControlType::ControlTypeByte)
+ .value("Integer32", ControlType::ControlTypeInteger32)
+ .value("Integer64", ControlType::ControlTypeInteger64)
+ .value("Float", ControlType::ControlTypeFloat)
+ .value("String", ControlType::ControlTypeString)
+ .value("Rectangle", ControlType::ControlTypeRectangle)
+ .value("Size", ControlType::ControlTypeSize);
+}
diff --git a/src/py/libcamera/pymain.cpp b/src/py/libcamera/pymain.cpp
new file mode 100644
index 00000000..84829e63
--- /dev/null
+++ b/src/py/libcamera/pymain.cpp
@@ -0,0 +1,649 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2022, Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
+ *
+ * Python bindings
+ */
+
+/*
+ * \todo Add geometry classes (Point, Rectangle...)
+ * \todo Add bindings for the ControlInfo class
+ * \todo Add bindings for the PixelFormat class
+ */
+
+#include <mutex>
+#include <stdexcept>
+#include <sys/eventfd.h>
+#include <unistd.h>
+
+#include <libcamera/base/log.h>
+
+#include <libcamera/libcamera.h>
+
+#include <pybind11/functional.h>
+#include <pybind11/smart_holder.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>());
+}
+
+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::make_tuple(v->x, v->y, v->width, v->height);
+ }
+ case ControlTypeSize: {
+ const Size *v = reinterpret_cast<const Size *>(cv.data().data());
+ return py::make_tuple(v->width, v->height);
+ }
+ 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: {
+ auto array = ob.cast<std::array<int32_t, 4>>();
+ return ControlValue(Rectangle(array[0], array[1], array[2], array[3]));
+ }
+ case ControlTypeSize: {
+ auto array = ob.cast<std::array<int32_t, 2>>();
+ return ControlValue(Size(array[0], array[1]));
+ }
+ case ControlTypeNone:
+ default:
+ throw std::runtime_error("Control type not implemented");
+ }
+}
+
+static std::weak_ptr<CameraManager> gCameraManager;
+static int gEventfd;
+static std::mutex gReqlistMutex;
+static std::vector<Request *> gReqList;
+
+static void handleRequestCompleted(Request *req)
+{
+ {
+ std::lock_guard guard(gReqlistMutex);
+ gReqList.push_back(req);
+ }
+
+ uint64_t v = 1;
+ size_t s = write(gEventfd, &v, 8);
+ /*
+ * We should never fail, and have no simple means to manage the error,
+ * so let's use LOG(Fatal).
+ */
+ if (s != 8)
+ LOG(Fatal) << "Unable to write to eventfd";
+}
+
+void init_pyenums(py::module &m);
+
+PYBIND11_MODULE(_libcamera, m)
+{
+ init_pyenums(m);
+
+ /* Forward declarations */
+
+ /*
+ * We need to declare all the classes here so that Python docstrings
+ * can be generated correctly.
+ * https://pybind11.readthedocs.io/en/latest/advanced/misc.html#avoiding-c-types-in-docstrings
+ */
+
+ auto pyCameraManager = py::class_<CameraManager>(m, "CameraManager");
+ auto pyCamera = py::class_<Camera>(m, "Camera");
+ auto pyCameraConfiguration = py::class_<CameraConfiguration>(m, "CameraConfiguration");
+ auto pyCameraConfigurationStatus = py::enum_<CameraConfiguration::Status>(pyCameraConfiguration, "Status");
+ auto pyStreamConfiguration = py::class_<StreamConfiguration>(m, "StreamConfiguration");
+ auto pyStreamFormats = py::class_<StreamFormats>(m, "StreamFormats");
+ auto pyFrameBufferAllocator = py::class_<FrameBufferAllocator>(m, "FrameBufferAllocator");
+ auto pyFrameBuffer = py::class_<FrameBuffer>(m, "FrameBuffer");
+ auto pyStream = py::class_<Stream>(m, "Stream");
+ auto pyControlId = py::class_<ControlId>(m, "ControlId");
+ auto pyRequest = py::class_<Request>(m, "Request");
+ auto pyRequestStatus = py::enum_<Request::Status>(pyRequest, "Status");
+ auto pyRequestReuse = py::enum_<Request::ReuseFlag>(pyRequest, "Reuse");
+ auto pyFrameMetadata = py::class_<FrameMetadata>(m, "FrameMetadata");
+ auto pyFrameMetadataStatus = py::enum_<FrameMetadata::Status>(pyFrameMetadata, "Status");
+ auto pyTransform = py::class_<Transform>(m, "Transform");
+ auto pyColorSpace = py::class_<ColorSpace>(m, "ColorSpace");
+ auto pyColorSpacePrimaries = py::enum_<ColorSpace::Primaries>(pyColorSpace, "Primaries");
+ auto pyColorSpaceTransferFunction = py::enum_<ColorSpace::TransferFunction>(pyColorSpace, "TransferFunction");
+ auto pyColorSpaceYcbcrEncoding = py::enum_<ColorSpace::YcbcrEncoding>(pyColorSpace, "YcbcrEncoding");
+ auto pyColorSpaceRange = py::enum_<ColorSpace::Range>(pyColorSpace, "Range");
+
+ /* Global functions */
+ m.def("log_set_level", &logSetLevel);
+
+ /* Classes */
+ pyCameraManager
+ .def_static("singleton", []() {
+ std::shared_ptr<CameraManager> cm = gCameraManager.lock();
+ if (cm)
+ return cm;
+
+ int fd = eventfd(0, 0);
+ if (fd == -1)
+ throw std::system_error(errno, std::generic_category(),
+ "Failed to create eventfd");
+
+ cm = std::shared_ptr<CameraManager>(new CameraManager, [](auto p) {
+ close(gEventfd);
+ gEventfd = -1;
+ delete p;
+ });
+
+ gEventfd = fd;
+ gCameraManager = cm;
+
+ int ret = cm->start();
+ if (ret)
+ throw std::system_error(-ret, std::generic_category(),
+ "Failed to start CameraManager");
+
+ return cm;
+ })
+
+ .def_property_readonly("version", &CameraManager::version)
+
+ .def_property_readonly("efd", [](CameraManager &) {
+ return gEventfd;
+ })
+
+ .def("get_ready_requests", [](CameraManager &) {
+ std::vector<Request *> v;
+
+ {
+ std::lock_guard guard(gReqlistMutex);
+ swap(v, gReqList);
+ }
+
+ std::vector<py::object> ret;
+
+ for (Request *req : v) {
+ py::object o = py::cast(req);
+ /* Decrease the ref increased in Camera.queue_request() */
+ o.dec_ref();
+ ret.push_back(o);
+ }
+
+ return ret;
+ })
+
+ .def("get", py::overload_cast<const std::string &>(&CameraManager::get), py::keep_alive<0, 1>())
+
+ /* Create a list of Cameras, where each camera has a keep-alive to CameraManager */
+ .def_property_readonly("cameras", [](CameraManager &self) {
+ py::list l;
+
+ for (auto &c : self.cameras()) {
+ py::object py_cm = py::cast(self);
+ py::object py_cam = py::cast(c);
+ py::detail::keep_alive_impl(py_cam, py_cm);
+ l.append(py_cam);
+ }
+
+ return l;
+ });
+
+ pyCamera
+ .def_property_readonly("id", &Camera::id)
+ .def("acquire", &Camera::acquire)
+ .def("release", &Camera::release)
+ .def("start", [](Camera &self, py::dict controls) {
+ /* \todo What happens if someone calls start() multiple times? */
+
+ self.requestCompleted.connect(handleRequestCompleted);
+
+ const ControlInfoMap &controlMap = self.controls();
+ ControlList controlList(controlMap);
+ for (const auto& [hkey, hval]: controls) {
+ auto key = hkey.cast<std::string>();
+
+ auto it = std::find_if(controlMap.begin(), controlMap.end(),
+ [&key](const auto &kvp) {
+ return kvp.first->name() == key;
+ });
+
+ if (it == controlMap.end())
+ throw std::runtime_error("Control " + key + " not found");
+
+ const auto &id = it->first;
+ auto obj = py::cast<py::object>(hval);
+
+ controlList.set(id->id(), pyToControlValue(obj, id->type()));
+ }
+
+ int ret = self.start(&controlList);
+ if (ret) {
+ self.requestCompleted.disconnect(handleRequestCompleted);
+ return ret;
+ }
+
+ return 0;
+ }, py::arg("controls") = py::dict())
+
+ .def("stop", [](Camera &self) {
+ int ret = self.stop();
+ if (ret)
+ return ret;
+
+ self.requestCompleted.disconnect(handleRequestCompleted);
+
+ return 0;
+ })
+
+ .def("__str__", [](Camera &self) {
+ return "<libcamera.Camera '" + self.id() + "'>";
+ })
+
+ /* Keep the camera alive, as StreamConfiguration contains a Stream* */
+ .def("generate_configuration", &Camera::generateConfiguration, py::keep_alive<0, 1>())
+ .def("configure", &Camera::configure)
+
+ .def("create_request", &Camera::createRequest, py::arg("cookie") = 0)
+
+ .def("queue_request", [](Camera &self, Request *req) {
+ py::object py_req = py::cast(req);
+
+ /*
+ * Increase the reference count, will be dropped in
+ * CameraManager.get_ready_requests().
+ */
+
+ py_req.inc_ref();
+
+ int ret = self.queueRequest(req);
+ if (ret)
+ py_req.dec_ref();
+
+ return ret;
+ })
+
+ .def_property_readonly("streams", [](Camera &self) {
+ py::set set;
+ for (auto &s : self.streams()) {
+ py::object py_self = py::cast(self);
+ py::object py_s = py::cast(s);
+ py::detail::keep_alive_impl(py_s, py_self);
+ set.add(py_s);
+ }
+ return set;
+ })
+
+ .def("find_control", [](Camera &self, const std::string &name) {
+ const auto &controls = self.controls();
+
+ auto it = std::find_if(controls.begin(), controls.end(),
+ [&name](const auto &kvp) {
+ return kvp.first->name() == name;
+ });
+
+ if (it == controls.end())
+ throw std::runtime_error("Control '" + name + "' not found");
+
+ return it->first;
+ }, py::return_value_policy::reference_internal)
+
+ .def_property_readonly("controls", [](Camera &self) {
+ py::dict ret;
+
+ for (const auto &[id, ci] : self.controls()) {
+ ret[id->name().c_str()] = std::make_tuple<py::object>(controlValueToPy(ci.min()),
+ controlValueToPy(ci.max()),
+ controlValueToPy(ci.def()));
+ }
+
+ return ret;
+ })
+
+ .def_property_readonly("properties", [](Camera &self) {
+ py::dict ret;
+
+ for (const auto &[key, cv] : self.properties()) {
+ const ControlId *id = properties::properties.at(key);
+ py::object ob = controlValueToPy(cv);
+
+ ret[id->name().c_str()] = ob;
+ }
+
+ return ret;
+ });
+
+ pyCameraConfiguration
+ .def("__iter__", [](CameraConfiguration &self) {
+ return py::make_iterator<py::return_value_policy::reference_internal>(self);
+ }, py::keep_alive<0, 1>())
+ .def("__len__", [](CameraConfiguration &self) {
+ return self.size();
+ })
+ .def("validate", &CameraConfiguration::validate)
+ .def("at", py::overload_cast<unsigned int>(&CameraConfiguration::at),
+ py::return_value_policy::reference_internal)
+ .def_property_readonly("size", &CameraConfiguration::size)
+ .def_property_readonly("empty", &CameraConfiguration::empty)
+ .def_readwrite("transform", &CameraConfiguration::transform);
+
+ pyCameraConfigurationStatus
+ .value("Valid", CameraConfiguration::Valid)
+ .value("Adjusted", CameraConfiguration::Adjusted)
+ .value("Invalid", CameraConfiguration::Invalid);
+
+ pyStreamConfiguration
+ .def("__str__", &StreamConfiguration::toString)
+ .def_property_readonly("stream", &StreamConfiguration::stream,
+ py::return_value_policy::reference_internal)
+ .def_property(
+ "size",
+ [](StreamConfiguration &self) {
+ return std::make_tuple(self.size.width, self.size.height);
+ },
+ [](StreamConfiguration &self, std::tuple<uint32_t, uint32_t> size) {
+ self.size.width = std::get<0>(size);
+ self.size.height = std::get<1>(size);
+ })
+ .def_property(
+ "pixel_format",
+ [](StreamConfiguration &self) {
+ return self.pixelFormat.toString();
+ },
+ [](StreamConfiguration &self, std::string fmt) {
+ self.pixelFormat = PixelFormat::fromString(fmt);
+ })
+ .def_readwrite("stride", &StreamConfiguration::stride)
+ .def_readwrite("frame_size", &StreamConfiguration::frameSize)
+ .def_readwrite("buffer_count", &StreamConfiguration::bufferCount)
+ .def_property_readonly("formats", &StreamConfiguration::formats,
+ py::return_value_policy::reference_internal)
+ .def_readwrite("color_space", &StreamConfiguration::colorSpace);
+
+ pyStreamFormats
+ .def_property_readonly("pixel_formats", [](StreamFormats &self) {
+ std::vector<std::string> fmts;
+ for (auto &fmt : self.pixelformats())
+ fmts.push_back(fmt.toString());
+ return fmts;
+ })
+ .def("sizes", [](StreamFormats &self, const std::string &pixelFormat) {
+ auto fmt = PixelFormat::fromString(pixelFormat);
+ std::vector<std::tuple<uint32_t, uint32_t>> fmts;
+ for (const auto &s : self.sizes(fmt))
+ fmts.push_back(std::make_tuple(s.width, s.height));
+ return fmts;
+ })
+ .def("range", [](StreamFormats &self, const std::string &pixelFormat) {
+ auto fmt = PixelFormat::fromString(pixelFormat);
+ const auto &range = self.range(fmt);
+ return make_tuple(std::make_tuple(range.hStep, range.vStep),
+ std::make_tuple(range.min.width, range.min.height),
+ std::make_tuple(range.max.width, range.max.height));
+ });
+
+ pyFrameBufferAllocator
+ .def(py::init<std::shared_ptr<Camera>>(), py::keep_alive<1, 2>())
+ .def("allocate", &FrameBufferAllocator::allocate)
+ .def_property_readonly("allocated", &FrameBufferAllocator::allocated)
+ /* Create a list of FrameBuffers, where each FrameBuffer has a keep-alive to FrameBufferAllocator */
+ .def("buffers", [](FrameBufferAllocator &self, Stream *stream) {
+ py::object py_self = py::cast(self);
+ py::list l;
+ for (auto &ub : self.buffers(stream)) {
+ py::object py_buf = py::cast(ub.get(), py::return_value_policy::reference_internal, py_self);
+ l.append(py_buf);
+ }
+ return l;
+ });
+
+ pyFrameBuffer
+ /* \todo implement FrameBuffer::Plane properly */
+ .def(py::init([](std::vector<std::tuple<int, unsigned int>> planes, unsigned int cookie) {
+ std::vector<FrameBuffer::Plane> v;
+ for (const auto &t : planes)
+ v.push_back({ SharedFD(std::get<0>(t)), FrameBuffer::Plane::kInvalidOffset, std::get<1>(t) });
+ return new FrameBuffer(v, cookie);
+ }))
+ .def_property_readonly("metadata", &FrameBuffer::metadata, py::return_value_policy::reference_internal)
+ .def_property_readonly("num_planes", [](const FrameBuffer &self) {
+ return self.planes().size();
+ })
+ .def("length", [](FrameBuffer &self, uint32_t idx) {
+ const FrameBuffer::Plane &plane = self.planes()[idx];
+ return plane.length;
+ })
+ .def("fd", [](FrameBuffer &self, uint32_t idx) {
+ const FrameBuffer::Plane &plane = self.planes()[idx];
+ return plane.fd.get();
+ })
+ .def("offset", [](FrameBuffer &self, uint32_t idx) {
+ const FrameBuffer::Plane &plane = self.planes()[idx];
+ return plane.offset;
+ })
+ .def_property("cookie", &FrameBuffer::cookie, &FrameBuffer::setCookie);
+
+ pyStream
+ .def_property_readonly("configuration", &Stream::configuration);
+
+ pyControlId
+ .def_property_readonly("id", &ControlId::id)
+ .def_property_readonly("name", &ControlId::name)
+ .def_property_readonly("type", &ControlId::type);
+
+ pyRequest
+ /* \todo Fence is not supported, so we cannot expose addBuffer() directly */
+ .def("add_buffer", [](Request &self, const Stream *stream, FrameBuffer *buffer) {
+ return self.addBuffer(stream, buffer);
+ }, py::keep_alive<1, 3>()) /* Request keeps Framebuffer alive */
+ .def_property_readonly("status", &Request::status)
+ .def_property_readonly("buffers", &Request::buffers)
+ .def_property_readonly("cookie", &Request::cookie)
+ .def_property_readonly("has_pending_buffers", &Request::hasPendingBuffers)
+ .def("set_control", [](Request &self, ControlId &id, py::object value) {
+ self.controls().set(id.id(), pyToControlValue(value, id.type()));
+ })
+ .def_property_readonly("metadata", [](Request &self) {
+ py::dict ret;
+
+ for (const auto &[key, cv] : self.metadata()) {
+ const ControlId *id = controls::controls.at(key);
+ py::object ob = controlValueToPy(cv);
+
+ ret[id->name().c_str()] = ob;
+ }
+
+ return ret;
+ })
+ /*
+ * \todo As we add a keep_alive to the fb in addBuffers(), we
+ * can only allow reuse with ReuseBuffers.
+ */
+ .def("reuse", [](Request &self) { self.reuse(Request::ReuseFlag::ReuseBuffers); });
+
+ pyRequestStatus
+ .value("Pending", Request::RequestPending)
+ .value("Complete", Request::RequestComplete)
+ .value("Cancelled", Request::RequestCancelled);
+
+ pyRequestReuse
+ .value("Default", Request::ReuseFlag::Default)
+ .value("ReuseBuffers", Request::ReuseFlag::ReuseBuffers);
+
+ pyFrameMetadata
+ .def_readonly("status", &FrameMetadata::status)
+ .def_readonly("sequence", &FrameMetadata::sequence)
+ .def_readonly("timestamp", &FrameMetadata::timestamp)
+ /* \todo Implement FrameMetadata::Plane properly */
+ .def_property_readonly("bytesused", [](FrameMetadata &self) {
+ std::vector<unsigned int> v;
+ v.resize(self.planes().size());
+ transform(self.planes().begin(), self.planes().end(), v.begin(), [](const auto &p) { return p.bytesused; });
+ return v;
+ });
+
+ pyFrameMetadataStatus
+ .value("Success", FrameMetadata::FrameSuccess)
+ .value("Error", FrameMetadata::FrameError)
+ .value("Cancelled", FrameMetadata::FrameCancelled);
+
+ pyTransform
+ .def(py::init([](int rotation, bool hflip, bool vflip, bool transpose) {
+ bool ok;
+
+ Transform t = transformFromRotation(rotation, &ok);
+ if (!ok)
+ throw std::invalid_argument("Invalid rotation");
+
+ if (hflip)
+ t ^= Transform::HFlip;
+ if (vflip)
+ t ^= Transform::VFlip;
+ if (transpose)
+ t ^= Transform::Transpose;
+ return t;
+ }), py::arg("rotation") = 0, py::arg("hflip") = false,
+ py::arg("vflip") = false, py::arg("transpose") = false)
+ .def(py::init([](Transform &other) { return other; }))
+ .def("__str__", [](Transform &self) {
+ return "<libcamera.Transform '" + std::string(transformToString(self)) + "'>";
+ })
+ .def_property("hflip",
+ [](Transform &self) {
+ return !!(self & Transform::HFlip);
+ },
+ [](Transform &self, bool hflip) {
+ if (hflip)
+ self |= Transform::HFlip;
+ else
+ self &= ~Transform::HFlip;
+ })
+ .def_property("vflip",
+ [](Transform &self) {
+ return !!(self & Transform::VFlip);
+ },
+ [](Transform &self, bool vflip) {
+ if (vflip)
+ self |= Transform::VFlip;
+ else
+ self &= ~Transform::VFlip;
+ })
+ .def_property("transpose",
+ [](Transform &self) {
+ return !!(self & Transform::Transpose);
+ },
+ [](Transform &self, bool transpose) {
+ if (transpose)
+ self |= Transform::Transpose;
+ else
+ self &= ~Transform::Transpose;
+ })
+ .def("inverse", [](Transform &self) { return -self; })
+ .def("invert", [](Transform &self) {
+ self = -self;
+ })
+ .def("compose", [](Transform &self, Transform &other) {
+ self = self * other;
+ });
+
+ pyColorSpace
+ .def(py::init([](ColorSpace::Primaries primaries,
+ ColorSpace::TransferFunction transferFunction,
+ ColorSpace::YcbcrEncoding ycbcrEncoding,
+ ColorSpace::Range range) {
+ return ColorSpace(primaries, transferFunction, ycbcrEncoding, range);
+ }), py::arg("primaries"), py::arg("transferFunction"),
+ py::arg("ycbcrEncoding"), py::arg("range"))
+ .def(py::init([](ColorSpace &other) { return other; }))
+ .def("__str__", [](ColorSpace &self) {
+ return "<libcamera.ColorSpace '" + self.toString() + "'>";
+ })
+ .def_readwrite("primaries", &ColorSpace::primaries)
+ .def_readwrite("transferFunction", &ColorSpace::transferFunction)
+ .def_readwrite("ycbcrEncoding", &ColorSpace::ycbcrEncoding)
+ .def_readwrite("range", &ColorSpace::range)
+ .def_static("Raw", []() { return ColorSpace::Raw; })
+ .def_static("Jpeg", []() { return ColorSpace::Jpeg; })
+ .def_static("Srgb", []() { return ColorSpace::Srgb; })
+ .def_static("Smpte170m", []() { return ColorSpace::Smpte170m; })
+ .def_static("Rec709", []() { return ColorSpace::Rec709; })
+ .def_static("Rec2020", []() { return ColorSpace::Rec2020; });
+
+ pyColorSpacePrimaries
+ .value("Raw", ColorSpace::Primaries::Raw)
+ .value("Smpte170m", ColorSpace::Primaries::Smpte170m)
+ .value("Rec709", ColorSpace::Primaries::Rec709)
+ .value("Rec2020", ColorSpace::Primaries::Rec2020);
+
+ pyColorSpaceTransferFunction
+ .value("Linear", ColorSpace::TransferFunction::Linear)
+ .value("Srgb", ColorSpace::TransferFunction::Srgb)
+ .value("Rec709", ColorSpace::TransferFunction::Rec709);
+
+ pyColorSpaceYcbcrEncoding
+ .value("Null", ColorSpace::YcbcrEncoding::None)
+ .value("Rec601", ColorSpace::YcbcrEncoding::Rec601)
+ .value("Rec709", ColorSpace::YcbcrEncoding::Rec709)
+ .value("Rec2020", ColorSpace::YcbcrEncoding::Rec2020);
+
+ pyColorSpaceRange
+ .value("Full", ColorSpace::Range::Full)
+ .value("Limited", ColorSpace::Range::Limited);
+}
diff --git a/src/py/meson.build b/src/py/meson.build
new file mode 100644
index 00000000..4ce9668c
--- /dev/null
+++ b/src/py/meson.build
@@ -0,0 +1 @@
+subdir('libcamera')
diff --git a/subprojects/.gitignore b/subprojects/.gitignore
index 391fde2c..0e194289 100644
--- a/subprojects/.gitignore
+++ b/subprojects/.gitignore
@@ -1,3 +1,4 @@
/googletest-release*
/libyuv
-/packagecache \ No newline at end of file
+/packagecache
+/pybind11
diff --git a/subprojects/packagefiles/pybind11/meson.build b/subprojects/packagefiles/pybind11/meson.build
new file mode 100644
index 00000000..1be47ca4
--- /dev/null
+++ b/subprojects/packagefiles/pybind11/meson.build
@@ -0,0 +1,7 @@
+project('pybind11', 'cpp',
+ version : '2.9.1',
+ license : 'BSD-3-Clause')
+
+pybind11_incdir = include_directories('include')
+
+pybind11_dep = declare_dependency(include_directories : pybind11_incdir)
diff --git a/subprojects/pybind11.wrap b/subprojects/pybind11.wrap
new file mode 100644
index 00000000..e8037a5d
--- /dev/null
+++ b/subprojects/pybind11.wrap
@@ -0,0 +1,9 @@
+[wrap-git]
+url = https://github.com/pybind/pybind11.git
+# This is the head of 'smart_holder' branch
+revision = aebdf00cd060b871c5a1e0c2cf4a333503dd0431
+depth = 1
+patch_directory = pybind11
+
+[provide]
+pybind11 = pybind11_dep
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-22 10:16:17 +0000