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09141c6e1f
Since we started depending on GLib 2.44, we can be sure this macro is defined (it will be a no-op on compilers that don't support it). For plugins we should just start using `G_DECLARE_FINAL_TYPE` which means we no longer need the macro there, but for most types in core we don't want to break ABI, which means it's better to just keep it like it is (and use the `#ifdef` instead).
180 lines
6.7 KiB
C
180 lines
6.7 KiB
C
/* GStreamer
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* Copyright (C) 2012 Olivier Crete <olivier.crete@collabora.com>
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*
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* gstdeviceprovider.h: Device probing and monitoring
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_DEVICE_PROVIDER_H__
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#define __GST_DEVICE_PROVIDER_H__
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#include <gst/gstelement.h>
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G_BEGIN_DECLS
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typedef struct _GstDeviceProvider GstDeviceProvider;
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typedef struct _GstDeviceProviderClass GstDeviceProviderClass;
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typedef struct _GstDeviceProviderPrivate GstDeviceProviderPrivate;
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#include <gst/gstdeviceproviderfactory.h>
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#define GST_TYPE_DEVICE_PROVIDER (gst_device_provider_get_type())
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#define GST_IS_DEVICE_PROVIDER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_DEVICE_PROVIDER))
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#define GST_IS_DEVICE_PROVIDER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_DEVICE_PROVIDER))
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#define GST_DEVICE_PROVIDER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_DEVICE_PROVIDER, GstDeviceProviderClass))
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#define GST_DEVICE_PROVIDER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_DEVICE_PROVIDER, GstDeviceProvider))
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#define GST_DEVICE_PROVIDER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_DEVICE_PROVIDER, GstDeviceProviderClass))
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#define GST_DEVICE_PROVIDER_CAST(obj) ((GstDeviceProvider *)(obj))
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/**
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* GstDeviceProvider:
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* @parent: The parent #GstObject
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* @devices: a #GList of the #GstDevice objects
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*
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* The structure of the base #GstDeviceProvider
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*
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* Since: 1.4
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*/
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struct _GstDeviceProvider {
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GstObject parent;
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/* Protected by the Object lock */
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GList *devices;
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/*< private >*/
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GstDeviceProviderPrivate *priv;
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gpointer _gst_reserved[GST_PADDING];
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};
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/**
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* GstDeviceProviderClass:
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* @parent_class: the parent #GstObjectClass structure
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* @factory: a pointer to the #GstDeviceProviderFactory that creates this
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* provider
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* @probe: Returns a list of devices that are currently available.
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* This should never block.
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* @start: Starts monitoring for new devices. Only subclasses that can know
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* that devices have been added or remove need to implement this method.
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* @stop: Stops monitoring for new devices. Only subclasses that implement
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* the start() method need to implement this method.
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*
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* The structure of the base #GstDeviceProviderClass
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*
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* Since: 1.4
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*/
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struct _GstDeviceProviderClass {
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GstObjectClass parent_class;
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GstDeviceProviderFactory *factory;
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GList* (*probe) (GstDeviceProvider * provider);
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gboolean (*start) (GstDeviceProvider * provider);
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void (*stop) (GstDeviceProvider * provider);
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/*< private >*/
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gpointer metadata;
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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GST_API
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GType gst_device_provider_get_type (void);
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GST_API
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GList * gst_device_provider_get_devices (GstDeviceProvider * provider);
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GST_API
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gboolean gst_device_provider_start (GstDeviceProvider * provider);
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GST_API
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void gst_device_provider_stop (GstDeviceProvider * provider);
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GST_API
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gboolean gst_device_provider_can_monitor (GstDeviceProvider * provider);
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GST_API
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GstBus * gst_device_provider_get_bus (GstDeviceProvider * provider);
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GST_API
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void gst_device_provider_device_add (GstDeviceProvider * provider,
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GstDevice * device);
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GST_API
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void gst_device_provider_device_remove (GstDeviceProvider * provider,
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GstDevice * device);
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GST_API
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gchar ** gst_device_provider_get_hidden_providers (GstDeviceProvider * provider);
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GST_API
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void gst_device_provider_hide_provider (GstDeviceProvider * provider,
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const gchar * name);
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GST_API
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void gst_device_provider_unhide_provider (GstDeviceProvider * provider,
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const gchar * name);
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GST_API
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const gchar * gst_device_provider_get_metadata (GstDeviceProvider * provider,
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const gchar * key);
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/* device provider class meta data */
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GST_API
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void gst_device_provider_class_set_metadata (GstDeviceProviderClass *klass,
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const gchar *longname,
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const gchar *classification,
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const gchar *description,
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const gchar *author);
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GST_API
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void gst_device_provider_class_set_static_metadata (GstDeviceProviderClass *klass,
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const gchar *longname,
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const gchar *classification,
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const gchar *description,
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const gchar *author);
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GST_API
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void gst_device_provider_class_add_metadata (GstDeviceProviderClass * klass,
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const gchar * key, const gchar * value);
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GST_API
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void gst_device_provider_class_add_static_metadata (GstDeviceProviderClass * klass,
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const gchar * key, const gchar * value);
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GST_API
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const gchar * gst_device_provider_class_get_metadata (GstDeviceProviderClass * klass,
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const gchar * key);
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GST_API
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void gst_device_provider_device_changed (GstDeviceProvider * provider,
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GstDevice *device,
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GstDevice *changed_device);
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/* factory management */
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GST_API
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GstDeviceProviderFactory * gst_device_provider_get_factory (GstDeviceProvider * provider);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstDeviceProvider, gst_object_unref)
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G_END_DECLS
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#endif /* __GST_DEVICE_PROVIDER_H__ */
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