mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-14 12:26:36 +00:00
41677a526b
If a device provider fails to start (for instance the pulseaudio provider unable to connect to the PulseAudio daemon) then the monitor should not keep track of it in its `started` providers list. Otherwise a false positive critical warning would be raised. This patch also switches the started_count type from bool to int, for consistency. This is a counter, after all. API: gst_device_provider_is_started Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/679>
183 lines
6.9 KiB
C
183 lines
6.9 KiB
C
/* GStreamer
|
|
* Copyright (C) 2012 Olivier Crete <olivier.crete@collabora.com>
|
|
*
|
|
* gstdeviceprovider.h: Device probing and monitoring
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
|
|
|
|
#ifndef __GST_DEVICE_PROVIDER_H__
|
|
#define __GST_DEVICE_PROVIDER_H__
|
|
|
|
#include <gst/gstelement.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
typedef struct _GstDeviceProvider GstDeviceProvider;
|
|
typedef struct _GstDeviceProviderClass GstDeviceProviderClass;
|
|
typedef struct _GstDeviceProviderPrivate GstDeviceProviderPrivate;
|
|
|
|
#include <gst/gstdeviceproviderfactory.h>
|
|
|
|
#define GST_TYPE_DEVICE_PROVIDER (gst_device_provider_get_type())
|
|
#define GST_IS_DEVICE_PROVIDER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_DEVICE_PROVIDER))
|
|
#define GST_IS_DEVICE_PROVIDER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_DEVICE_PROVIDER))
|
|
#define GST_DEVICE_PROVIDER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_DEVICE_PROVIDER, GstDeviceProviderClass))
|
|
#define GST_DEVICE_PROVIDER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_DEVICE_PROVIDER, GstDeviceProvider))
|
|
#define GST_DEVICE_PROVIDER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_DEVICE_PROVIDER, GstDeviceProviderClass))
|
|
#define GST_DEVICE_PROVIDER_CAST(obj) ((GstDeviceProvider *)(obj))
|
|
|
|
|
|
/**
|
|
* GstDeviceProvider:
|
|
* @parent: The parent #GstObject
|
|
* @devices: a #GList of the #GstDevice objects
|
|
*
|
|
* The structure of the base #GstDeviceProvider
|
|
*
|
|
* Since: 1.4
|
|
*/
|
|
struct _GstDeviceProvider {
|
|
GstObject parent;
|
|
|
|
/* Protected by the Object lock */
|
|
GList *devices;
|
|
|
|
/*< private >*/
|
|
|
|
GstDeviceProviderPrivate *priv;
|
|
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
/**
|
|
* GstDeviceProviderClass:
|
|
* @parent_class: the parent #GstObjectClass structure
|
|
* @factory: a pointer to the #GstDeviceProviderFactory that creates this
|
|
* provider
|
|
* @probe: Returns a list of devices that are currently available.
|
|
* This should never block. The devices should not have a parent and should
|
|
* be floating.
|
|
* @start: Starts monitoring for new devices. Only subclasses that can know
|
|
* that devices have been added or remove need to implement this method.
|
|
* @stop: Stops monitoring for new devices. Only subclasses that implement
|
|
* the start() method need to implement this method.
|
|
*
|
|
* The structure of the base #GstDeviceProviderClass
|
|
*
|
|
* Since: 1.4
|
|
*/
|
|
|
|
struct _GstDeviceProviderClass {
|
|
GstObjectClass parent_class;
|
|
|
|
GstDeviceProviderFactory *factory;
|
|
|
|
GList* (*probe) (GstDeviceProvider * provider);
|
|
|
|
gboolean (*start) (GstDeviceProvider * provider);
|
|
void (*stop) (GstDeviceProvider * provider);
|
|
|
|
/*< private >*/
|
|
gpointer metadata;
|
|
|
|
/*< private >*/
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
GST_API
|
|
GType gst_device_provider_get_type (void);
|
|
|
|
|
|
GST_API
|
|
GList * gst_device_provider_get_devices (GstDeviceProvider * provider);
|
|
|
|
GST_API
|
|
gboolean gst_device_provider_start (GstDeviceProvider * provider);
|
|
|
|
GST_API
|
|
void gst_device_provider_stop (GstDeviceProvider * provider);
|
|
|
|
GST_API
|
|
gboolean gst_device_provider_can_monitor (GstDeviceProvider * provider);
|
|
|
|
GST_API
|
|
GstBus * gst_device_provider_get_bus (GstDeviceProvider * provider);
|
|
|
|
GST_API
|
|
void gst_device_provider_device_add (GstDeviceProvider * provider,
|
|
GstDevice * device);
|
|
GST_API
|
|
void gst_device_provider_device_remove (GstDeviceProvider * provider,
|
|
GstDevice * device);
|
|
GST_API
|
|
gchar ** gst_device_provider_get_hidden_providers (GstDeviceProvider * provider);
|
|
|
|
GST_API
|
|
void gst_device_provider_hide_provider (GstDeviceProvider * provider,
|
|
const gchar * name);
|
|
GST_API
|
|
void gst_device_provider_unhide_provider (GstDeviceProvider * provider,
|
|
const gchar * name);
|
|
|
|
GST_API
|
|
const gchar * gst_device_provider_get_metadata (GstDeviceProvider * provider,
|
|
const gchar * key);
|
|
|
|
GST_API
|
|
gboolean gst_device_provider_is_started (GstDeviceProvider * provider);
|
|
|
|
/* device provider class meta data */
|
|
|
|
GST_API
|
|
void gst_device_provider_class_set_metadata (GstDeviceProviderClass *klass,
|
|
const gchar *longname,
|
|
const gchar *classification,
|
|
const gchar *description,
|
|
const gchar *author);
|
|
GST_API
|
|
void gst_device_provider_class_set_static_metadata (GstDeviceProviderClass *klass,
|
|
const gchar *longname,
|
|
const gchar *classification,
|
|
const gchar *description,
|
|
const gchar *author);
|
|
GST_API
|
|
void gst_device_provider_class_add_metadata (GstDeviceProviderClass * klass,
|
|
const gchar * key, const gchar * value);
|
|
GST_API
|
|
void gst_device_provider_class_add_static_metadata (GstDeviceProviderClass * klass,
|
|
const gchar * key, const gchar * value);
|
|
GST_API
|
|
const gchar * gst_device_provider_class_get_metadata (GstDeviceProviderClass * klass,
|
|
const gchar * key);
|
|
|
|
GST_API
|
|
void gst_device_provider_device_changed (GstDeviceProvider * provider,
|
|
GstDevice *device,
|
|
GstDevice *changed_device);
|
|
|
|
/* factory management */
|
|
|
|
GST_API
|
|
GstDeviceProviderFactory * gst_device_provider_get_factory (GstDeviceProvider * provider);
|
|
|
|
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstDeviceProvider, gst_object_unref)
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_DEVICE_PROVIDER_H__ */
|