libcamera/vivid.git - libcamera pipeline handler for VIVID

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author	Jacopo Mondi <jacopo@jmondi.org>	2018-12-26 11:09:35 +0100
committer	Laurent Pinchart <laurent.pinchart@ideasonboard.com>	2019-01-02 12:53:55 +0200
commit	d4af90d72901b1c6c2609ea8a3c0da76facf6c2e (patch)
tree	348450495041618c944f4673d7bd4eaebabd1878 /utils
parent	14291e50b7d9cfbc7bae51f84b97adf44cce6b55 (diff)

libcamera: media_device: Create entities with major and minor numbers

Extend the MediaEntity object with device node major and minor numbers, and retrieve them from the media graph using interfaces. They will be used by the DeviceEnumerator to retrieve the devnode path. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

Diffstat (limited to 'utils')

0 files changed, 0 insertions, 0 deletions

/* SPDX-License-Identifier: LGPL-2.1-or-later */ /* * Copyright (C) 2020, Collabora Ltd. * Author: Nicolas Dufresne <nicolas.dufresne@collabora.com> * * gstlibcameraprovider.c - GStreamer Device Provider */ #include "gstlibcameraprovider.h" #include <libcamera/camera.h> #include <libcamera/camera_manager.h> #include "gstlibcamerasrc.h" #include "gstlibcamera-utils.h" using namespace libcamera; GST_DEBUG_CATEGORY_STATIC(provider_debug); #define GST_CAT_DEFAULT provider_debug /** * \struct _GstLibcameraDevice * \brief libcamera GstDevice implementation * * This object is used by GstLibcameraProvider to abstract a libcamera * device. It also provides helpers to create and configure the * libcamerasrc GstElement to be used with this device. The implementation is * private to the plugin. */ enum { PROP_DEVICE_NAME = 1, }; #define GST_TYPE_LIBCAMERA_DEVICE gst_libcamera_device_get_type() G_DECLARE_FINAL_TYPE(GstLibcameraDevice, gst_libcamera_device, GST_LIBCAMERA, DEVICE, GstDevice); struct _GstLibcameraDevice { GstDevice parent; gchar *name; }; G_DEFINE_TYPE(GstLibcameraDevice, gst_libcamera_device, GST_TYPE_DEVICE); static GstElement * gst_libcamera_device_create_element(GstDevice *device, const gchar *name) { GstElement *source = gst_element_factory_make("libcamerasrc", name); /* * Provider and source lives in the same plugin, so making the source * should never fail. */ g_assert(source); g_object_set(source, "camera-name", GST_LIBCAMERA_DEVICE(device)->name, nullptr); return source; } static gboolean gst_libcamera_device_reconfigure_element(GstDevice *device, GstElement *element) { if (!GST_LIBCAMERA_IS_SRC(element)) return FALSE; g_object_set(element, "camera-name", GST_LIBCAMERA_DEVICE(device)->name, nullptr); return TRUE; } static void gst_libcamera_device_set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GstLibcameraDevice *device = GST_LIBCAMERA_DEVICE(object); switch (prop_id) { case PROP_DEVICE_NAME: device->name = g_value_dup_string(value); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec); break; } } static void gst_libcamera_device_init(GstLibcameraDevice *self) { } static void gst_libcamera_device_finalize(GObject *object) { GstLibcameraDevice *self = GST_LIBCAMERA_DEVICE(object); gpointer klass = gst_libcamera_device_parent_class; g_free(self->name); G_OBJECT_GET_CLASS(klass)->finalize(object); } static void gst_libcamera_device_class_init(GstLibcameraDeviceClass *klass) { GstDeviceClass *device_class = GST_DEVICE_CLASS(klass); GObjectClass *object_class = G_OBJECT_CLASS(klass); device_class->create_element = gst_libcamera_device_create_element; device_class->reconfigure_element = gst_libcamera_device_reconfigure_element; object_class->set_property = gst_libcamera_device_set_property; object_class->finalize = gst_libcamera_device_finalize; GParamSpec *pspec = g_param_spec_string("name", "Name", "The name of the camera device", "", (GParamFlags)(G_PARAM_STATIC_STRINGS | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY)); g_object_class_install_property(object_class, PROP_DEVICE_NAME, pspec); } static GstDevice * gst_libcamera_device_new(const std::shared_ptr<Camera> &camera) { g_autoptr(GstCaps) caps = gst_caps_new_empty(); const gchar *name = camera->name().c_str(); StreamRoles roles; roles.push_back(StreamRole::VideoRecording); std::unique_ptr<CameraConfiguration> config = camera->generateConfiguration(roles); for (const StreamConfiguration &stream_cfg : *config) { GstCaps *sub_caps = gst_libcamera_stream_formats_to_caps(stream_cfg.formats()); if (sub_caps) gst_caps_append(caps, sub_caps); } return GST_DEVICE(g_object_new(GST_TYPE_LIBCAMERA_DEVICE, /* \todo Use a unique identifier instead of camera name. */ "name", name, "display-name", name, "caps", caps, "device-class", "Source/Video", nullptr)); } /** * \struct _GstLibcameraProvider * \brief libcamera GstDeviceProvider implementation * * This GstFeature is used by GstDeviceMonitor to probe the available * libcamera devices. The implementation is private to the plugin. */ struct _GstLibcameraProvider { GstDeviceProvider parent; CameraManager *cm; }; G_DEFINE_TYPE_WITH_CODE(GstLibcameraProvider, gst_libcamera_provider, GST_TYPE_DEVICE_PROVIDER, GST_DEBUG_CATEGORY_INIT(provider_debug, "libcamera-provider", 0, "libcamera Device Provider")); static GList * gst_libcamera_provider_probe(GstDeviceProvider *provider) { GstLibcameraProvider *self = GST_LIBCAMERA_PROVIDER(provider); CameraManager *cm = self->cm; GList *devices = nullptr; gint ret; GST_INFO_OBJECT(self, "Probing cameras using libcamera"); /* \todo Move the CameraMananger start()/stop() calls into * GstDeviceProvider start()/stop() virtual function when CameraMananger * gains monitoring support. Meanwhile we need to cycle start()/stop() * to ensure every probe() calls return the latest list. */ ret = cm->start(); if (ret) { GST_ERROR_OBJECT(self, "Failed to retrieve device list: %s", g_strerror(-ret)); return nullptr; } for (const std::shared_ptr<Camera> &camera : cm->cameras()) { GST_INFO_OBJECT(self, "Found camera '%s'", camera->name().c_str()); devices = g_list_append(devices, g_object_ref_sink(gst_libcamera_device_new(camera))); } cm->stop(); return devices; } static void gst_libcamera_provider_init(GstLibcameraProvider *self) { GstDeviceProvider *provider = GST_DEVICE_PROVIDER(self); self->cm = new CameraManager();


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