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DeviceProvider: Rename from DeviceMonitor

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This commit is contained in:
Olivier Crête 2014-06-26 14:28:09 -04:00
parent 4720e6d0e0
commit 7992174a1a
23 changed files with 1047 additions and 1041 deletions
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6
docs/gst/gstreamer-docs.sgml
View file

@ -117,10 +117,10 @@ Windows. It is released under the GNU Library General Public License
<chapter id="gstreamer-device-probing">
<title>GStreamer Device Discovery and Device Probing</title>
<xi:include href="xml/gstdevice.xml" />
<xi:include href="xml/gstdevicemonitor.xml" />
<xi:include href="xml/gstdevicemonitorfactory.xml" />
<xi:include href="xml/gstglobaldevicemonitor.xml" />
<xi:include href="xml/gstdevice.xml" />
<xi:include href="xml/gstdeviceprovider.xml" />
<xi:include href="xml/gstdeviceproviderfactory.xml" />
</chapter>
<chapter id="gstreamer-support">

94
docs/gst/gstreamer-sections.txt
View file

@ -3353,61 +3353,61 @@ gst_device_get_type
</SECTION>
<SECTION>
<FILE>gstdevicemonitor</FILE>
<TITLE>GstDeviceMonitor</TITLE>
GstDeviceMonitor
GstDeviceMonitorClass
gst_device_monitor_can_monitor
gst_device_monitor_class_add_metadata
gst_device_monitor_class_add_static_metadata
gst_device_monitor_class_get_metadata
gst_device_monitor_class_set_metadata
gst_device_monitor_class_set_static_metadata
gst_device_monitor_device_add
gst_device_monitor_device_remove
gst_device_monitor_get_bus
gst_device_monitor_get_devices
gst_device_monitor_get_factory
gst_device_monitor_register
gst_device_monitor_start
gst_device_monitor_stop
<FILE>gstdeviceprovider</FILE>
<TITLE>GstDeviceProvider</TITLE>
GstDeviceProvider
GstDeviceProviderClass
gst_device_provider_can_monitor
gst_device_provider_class_add_metadata
gst_device_provider_class_add_static_metadata
gst_device_provider_class_get_metadata
gst_device_provider_class_set_metadata
gst_device_provider_class_set_static_metadata
gst_device_provider_device_add
gst_device_provider_device_remove
gst_device_provider_get_bus
gst_device_provider_get_devices
gst_device_provider_get_factory
gst_device_provider_register
gst_device_provider_start
gst_device_provider_stop
<SUBSECTION Standard>
GstDevicePrivate
GST_DEVICE_MONITOR
GST_DEVICE_MONITOR_CAST
GST_DEVICE_MONITOR_CLASS
GST_DEVICE_MONITOR_GET_CLASS
GST_IS_DEVICE_MONITOR
GST_IS_DEVICE_MONITOR_CLASS
GST_TYPE_DEVICE_MONITOR
gst_device_monitor_get_type
GST_DEVICE_PROVIDER
GST_DEVICE_PROVIDER_CAST
GST_DEVICE_PROVIDER_CLASS
GST_DEVICE_PROVIDER_GET_CLASS
GST_IS_DEVICE_PROVIDER
GST_IS_DEVICE_PROVIDER_CLASS
GST_TYPE_DEVICE_PROVIDER
gst_device_provider_get_type
</SECTION>
<SECTION>
<FILE>gstdevicemonitorfactory</FILE>
<TITLE>GstDeviceMonitorFactory</TITLE>
GstDeviceMonitorFactory
GstDeviceMonitorFactoryClass
gst_device_monitor_factory_find
gst_device_monitor_factory_get
gst_device_monitor_factory_get_by_name
gst_device_monitor_factory_get_device_monitor_type
gst_device_monitor_factory_get_metadata
gst_device_monitor_factory_get_metadata_keys
gst_device_monitor_factory_has_classes
gst_device_monitor_factory_has_classesv
gst_device_monitor_factory_list_get_device_monitors
<FILE>gstdeviceproviderfactory</FILE>
<TITLE>GstDeviceProviderFactory</TITLE>
GstDeviceProviderFactory
GstDeviceProviderFactoryClass
gst_device_provider_factory_find
gst_device_provider_factory_get
gst_device_provider_factory_get_by_name
gst_device_provider_factory_get_device_provider_type
gst_device_provider_factory_get_metadata
gst_device_provider_factory_get_metadata_keys
gst_device_provider_factory_has_classes
gst_device_provider_factory_has_classesv
gst_device_provider_factory_list_get_device_providers
<SUBSECTION Standard>
GstDeviceMonitorPrivate
GST_DEVICE_MONITOR_FACTORY
GST_DEVICE_MONITOR_FACTORY_CAST
GST_DEVICE_MONITOR_FACTORY_CLASS
GST_TYPE_DEVICE_MONITOR_FACTORY
GST_IS_DEVICE_MONITOR_FACTORY
GST_IS_DEVICE_MONITOR_FACTORY_CLASS
gst_device_monitor_factory_get_type
GstDeviceProviderPrivate
GST_DEVICE_PROVIDER_FACTORY
GST_DEVICE_PROVIDER_FACTORY_CAST
GST_DEVICE_PROVIDER_FACTORY_CLASS
GST_TYPE_DEVICE_PROVIDER_FACTORY
GST_IS_DEVICE_PROVIDER_FACTORY
GST_IS_DEVICE_PROVIDER_FACTORY_CLASS
gst_device_provider_factory_get_type
</SECTION>
<SECTION>

2
docs/plugins/gstreamer-plugins.hierarchy
View file

@ -36,7 +36,7 @@ GObject
GstPadTemplate
GstPlugin
GstPluginFeature
GstDeviceMonitorFactory
GstDeviceProviderFactory
GstElementFactory
GstTypeFindFactory
GstRegistry

8
gst/Makefile.am
View file

@ -72,8 +72,8 @@ libgstreamer_@GST_API_VERSION@_la_SOURCES = \
gstdatetime.c \
gstdebugutils.c \
gstdevice.c \
gstdevicemonitor.c \
gstdevicemonitorfactory.c \
gstdeviceprovider.c \
gstdeviceproviderfactory.c \
gstelement.c \
gstelementfactory.c \
gsterror.c \
@ -177,8 +177,8 @@ gst_headers = \
gstelement.h \
gstelementmetadata.h \
gstdevice.h \
gstdevicemonitor.h \
gstdevicemonitorfactory.h \
gstdeviceprovider.h \
gstdeviceproviderfactory.h \
gstelementfactory.h \
gsterror.h \
gstevent.h \

2
gst/gst.h
View file

@ -43,7 +43,7 @@
#include <gst/gstdatetime.h>
#include <gst/gstdebugutils.h>
#include <gst/gstdevice.h>
#include <gst/gstdevicemonitor.h>
#include <gst/gstdeviceprovider.h>
#include <gst/gstelement.h>
#include <gst/gstelementmetadata.h>
#include <gst/gsterror.h>

10
gst/gst_private.h
View file

@ -54,8 +54,8 @@ extern const char g_log_domain_gstreamer[];
/* for GstElement */
#include "gstelement.h"
/* for GstDeviceMonitor */
#include "gstdevicemonitor.h"
/* for GstDeviceProvider */
#include "gstdeviceprovider.h"
/* for GstToc */
#include "gsttoc.h"
@ -399,19 +399,19 @@ struct _GstElementFactoryClass {
gpointer _gst_reserved[GST_PADDING];
};
struct _GstDeviceMonitorFactory {
struct _GstDeviceProviderFactory {
GstPluginFeature feature;
/* <private> */
GType type; /* unique GType the device factory or 0 if not loaded */
volatile GstDeviceMonitor *monitor;
volatile GstDeviceProvider *provider;
gpointer metadata;
gpointer _gst_reserved[GST_PADDING];
};
struct _GstDeviceMonitorFactoryClass {
struct _GstDeviceProviderFactoryClass {
GstPluginFeatureClass parent;
/* <private> */

6
gst/gstdevice.c
View file

@ -22,13 +22,13 @@
/**
* SECTION:gstdevice
* @short_description: Object representing a device
* @see_also: #GstDeviceMonitor
* @see_also: #GstDeviceProvider
*
* #GstDevice are objects representing a device, they contain
* relevant metadata about the device, such as its class and the #GstCaps
* representing the media types it can produce or handle.
*
* #GstDevice are created by #GstDeviceMonitor objects which can be
* #GstDevice are created by #GstDeviceProvider objects which can be
* aggregated by #GstGlobalDeviceMonitor objects.
*
* Since: 1.4
@ -239,7 +239,7 @@ gst_device_get_display_name (GstDevice * device)
*
* Gets the "class" of a device. This is a "/" separated list of
* classes that represent this device. They are a subset of the
* classes of the #GstDeviceMonitor that produced this device.
* classes of the #GstDeviceProvider that produced this device.
*
* Returns: The device class. Free with g_free() after use.
*

587
gst/gstdevicemonitor.c
View file

@ -1,587 +0,0 @@
/* GStreamer
* Copyright (C) 2012 Olivier Crete <olivier.crete@collabora.com>
*
* gstdevicemonitor.c: 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.
*/
/**
* SECTION:gstdevicemonitor
* @short_description: A device monitor and prober
* @see_also: #GstDevice, #GstGlobalDeviceMonitor
*
* A #GstDeviceMonitor subclass is provided by a plugin that handles devices
* if there is a way to programatically list connected devices. It can also
* optionally provide updates to the list of connected devices.
*
* Each #GstDeviceMonitor subclass is a singleton, a plugin should
* normally provide a single subclass for all devices.
*
* Applications would normally use a #GstGlobalDeviceMonitor to monitor devices
* from all revelant monitors.
*
* Since: 1.4
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gst_private.h"
#include "gstdevicemonitor.h"
#include "gstelementmetadata.h"
#include "gstquark.h"
struct _GstDeviceMonitorPrivate
{
GstBus *bus;
GMutex start_lock;
gboolean started_count;
};
/* this is used in gstelementfactory.c:gst_element_register() */
GQuark __gst_devicemonitorclass_factory = 0;
static void gst_device_monitor_class_init (GstDeviceMonitorClass * klass);
static void gst_device_monitor_init (GstDeviceMonitor * element);
static void gst_device_monitor_base_class_init (gpointer g_class);
static void gst_device_monitor_base_class_finalize (gpointer g_class);
static void gst_device_monitor_dispose (GObject * object);
static void gst_device_monitor_finalize (GObject * object);
static gpointer gst_device_monitor_parent_class = NULL;
GType
gst_device_monitor_get_type (void)
{
static volatile gsize gst_device_monitor_type = 0;
if (g_once_init_enter (&gst_device_monitor_type)) {
GType _type;
static const GTypeInfo element_info = {
sizeof (GstDeviceMonitorClass),
gst_device_monitor_base_class_init,
gst_device_monitor_base_class_finalize,
(GClassInitFunc) gst_device_monitor_class_init,
NULL,
NULL,
sizeof (GstDeviceMonitor),
0,
(GInstanceInitFunc) gst_device_monitor_init,
NULL
};
_type = g_type_register_static (GST_TYPE_OBJECT, "GstDeviceMonitor",
&element_info, G_TYPE_FLAG_ABSTRACT);
__gst_devicemonitorclass_factory =
g_quark_from_static_string ("GST_DEVICEMONITORCLASS_FACTORY");
g_once_init_leave (&gst_device_monitor_type, _type);
}
return gst_device_monitor_type;
}
static void
gst_device_monitor_base_class_init (gpointer g_class)
{
GstDeviceMonitorClass *klass = GST_DEVICE_MONITOR_CLASS (g_class);
/* Copy the element details here so elements can inherit the
* details from their base class and classes only need to set
* the details in class_init instead of base_init */
klass->metadata =
klass->metadata ? gst_structure_copy (klass->metadata) :
gst_structure_new_empty ("metadata");
klass->factory = g_type_get_qdata (G_TYPE_FROM_CLASS (klass),
__gst_devicemonitorclass_factory);
}
static void
gst_device_monitor_base_class_finalize (gpointer g_class)
{
GstDeviceMonitorClass *klass = GST_DEVICE_MONITOR_CLASS (g_class);
gst_structure_free (klass->metadata);
}
static void
gst_device_monitor_class_init (GstDeviceMonitorClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
gst_device_monitor_parent_class = g_type_class_peek_parent (klass);
g_type_class_add_private (klass, sizeof (GstDeviceMonitorPrivate));
gobject_class->dispose = gst_device_monitor_dispose;
gobject_class->finalize = gst_device_monitor_finalize;
}
static void
gst_device_monitor_init (GstDeviceMonitor * monitor)
{
monitor->priv = G_TYPE_INSTANCE_GET_PRIVATE (monitor,
GST_TYPE_DEVICE_MONITOR, GstDeviceMonitorPrivate);
g_mutex_init (&monitor->priv->start_lock);
monitor->priv->bus = gst_bus_new ();
gst_bus_set_flushing (monitor->priv->bus, TRUE);
}
static void
gst_device_monitor_dispose (GObject * object)
{
GstDeviceMonitor *monitor = GST_DEVICE_MONITOR (object);
gst_object_replace ((GstObject **) & monitor->priv->bus, NULL);
GST_OBJECT_LOCK (monitor);
g_list_free_full (monitor->devices, (GDestroyNotify) gst_object_unparent);
monitor->devices = NULL;
GST_OBJECT_UNLOCK (monitor);
G_OBJECT_CLASS (gst_device_monitor_parent_class)->dispose (object);
}
static void
gst_device_monitor_finalize (GObject * object)
{
GstDeviceMonitor *monitor = GST_DEVICE_MONITOR (object);
g_mutex_clear (&monitor->priv->start_lock);
G_OBJECT_CLASS (gst_device_monitor_parent_class)->finalize (object);
}
/**
* gst_device_monitor_class_add_metadata:
* @klass: class to set metadata for
* @key: the key to set
* @value: the value to set
*
* Set @key with @value as metadata in @klass.
*/
void
gst_device_monitor_class_add_metadata (GstDeviceMonitorClass * klass,
const gchar * key, const gchar * value)
{
g_return_if_fail (GST_IS_DEVICE_MONITOR_CLASS (klass));
g_return_if_fail (key != NULL);
g_return_if_fail (value != NULL);
gst_structure_set ((GstStructure *) klass->metadata,
key, G_TYPE_STRING, value, NULL);
}
/**
* gst_device_monitor_class_add_static_metadata:
* @klass: class to set metadata for
* @key: the key to set
* @value: the value to set
*
* Set @key with @value as metadata in @klass.
*
* Same as gst_device_monitor_class_add_metadata(), but @value must be a static string
* or an inlined string, as it will not be copied. (GStreamer plugins will
* be made resident once loaded, so this function can be used even from
* dynamically loaded plugins.)
*
* Since: 1.4
*/
void
gst_device_monitor_class_add_static_metadata (GstDeviceMonitorClass * klass,
const gchar * key, const gchar * value)
{
GValue val = G_VALUE_INIT;
g_return_if_fail (GST_IS_DEVICE_MONITOR_CLASS (klass));
g_return_if_fail (key != NULL);
g_return_if_fail (value != NULL);
g_value_init (&val, G_TYPE_STRING);
g_value_set_static_string (&val, value);
gst_structure_take_value ((GstStructure *) klass->metadata, key, &val);
}
/**
* gst_device_monitor_class_set_metadata:
* @klass: class to set metadata for
* @longname: The long English name of the device monitor. E.g. "File Sink"
* @classification: String describing the type of device monitor, as an unordered list
* separated with slashes ('/'). See draft-klass.txt of the design docs
* for more details and common types. E.g: "Sink/File"
* @description: Sentence describing the purpose of the device monitor.
* E.g: "Write stream to a file"
* @author: Name and contact details of the author(s). Use \n to separate
* multiple author metadata. E.g: "Joe Bloggs &lt;joe.blogs at foo.com&gt;"
*
* Sets the detailed information for a #GstDeviceMonitorClass.
* <note>This function is for use in _class_init functions only.</note>
*
* Since: 1.4
*/
void
gst_device_monitor_class_set_metadata (GstDeviceMonitorClass * klass,
const gchar * longname, const gchar * classification,
const gchar * description, const gchar * author)
{
g_return_if_fail (GST_IS_DEVICE_MONITOR_CLASS (klass));
g_return_if_fail (longname != NULL && *longname != '\0');
g_return_if_fail (classification != NULL && *classification != '\0');
g_return_if_fail (description != NULL && *description != '\0');
g_return_if_fail (author != NULL && *author != '\0');
gst_structure_id_set ((GstStructure *) klass->metadata,
GST_QUARK (ELEMENT_METADATA_LONGNAME), G_TYPE_STRING, longname,
GST_QUARK (ELEMENT_METADATA_KLASS), G_TYPE_STRING, classification,
GST_QUARK (ELEMENT_METADATA_DESCRIPTION), G_TYPE_STRING, description,
GST_QUARK (ELEMENT_METADATA_AUTHOR), G_TYPE_STRING, author, NULL);
}
/**
* gst_device_monitor_class_set_static_metadata:
* @klass: class to set metadata for
* @longname: The long English name of the element. E.g. "File Sink"
* @classification: String describing the type of element, as an unordered list
* separated with slashes ('/'). See draft-klass.txt of the design docs
* for more details and common types. E.g: "Sink/File"
* @description: Sentence describing the purpose of the element.
* E.g: "Write stream to a file"
* @author: Name and contact details of the author(s). Use \n to separate
* multiple author metadata. E.g: "Joe Bloggs &lt;joe.blogs at foo.com&gt;"
*
* Sets the detailed information for a #GstDeviceMonitorClass.
* <note>This function is for use in _class_init functions only.</note>
*
* Same as gst_device_monitor_class_set_metadata(), but @longname, @classification,
* @description, and @author must be static strings or inlined strings, as
* they will not be copied. (GStreamer plugins will be made resident once
* loaded, so this function can be used even from dynamically loaded plugins.)
*
* Since: 1.4
*/
void
gst_device_monitor_class_set_static_metadata (GstDeviceMonitorClass * klass,
const gchar * longname, const gchar * classification,
const gchar * description, const gchar * author)
{
GstStructure *s = (GstStructure *) klass->metadata;
GValue val = G_VALUE_INIT;
g_return_if_fail (GST_IS_DEVICE_MONITOR_CLASS (klass));
g_return_if_fail (longname != NULL && *longname != '\0');
g_return_if_fail (classification != NULL && *classification != '\0');
g_return_if_fail (description != NULL && *description != '\0');
g_return_if_fail (author != NULL && *author != '\0');
g_value_init (&val, G_TYPE_STRING);
g_value_set_static_string (&val, longname);
gst_structure_id_set_value (s, GST_QUARK (ELEMENT_METADATA_LONGNAME), &val);
g_value_set_static_string (&val, classification);
gst_structure_id_set_value (s, GST_QUARK (ELEMENT_METADATA_KLASS), &val);
g_value_set_static_string (&val, description);
gst_structure_id_set_value (s, GST_QUARK (ELEMENT_METADATA_DESCRIPTION),
&val);
g_value_set_static_string (&val, author);
gst_structure_id_take_value (s, GST_QUARK (ELEMENT_METADATA_AUTHOR), &val);
}
/**
* gst_device_monitor_class_get_metadata:
* @klass: class to get metadata for
* @key: the key to get
*
* Get metadata with @key in @klass.
*
* Returns: the metadata for @key.
*
* Since: 1.4
*/
const gchar *
gst_device_monitor_class_get_metadata (GstDeviceMonitorClass * klass,
const gchar * key)
{
g_return_val_if_fail (GST_IS_DEVICE_MONITOR_CLASS (klass), NULL);
g_return_val_if_fail (key != NULL, NULL);
return gst_structure_get_string ((GstStructure *) klass->metadata, key);
}
/**
* gst_device_monitor_get_devices:
* @monitor: A #GstDeviceMonitor
*
* Gets a list of devices that this monitor understands. This may actually
* probe the hardware if the monitor is not currently started.
*
* Returns: (transfer full) (element-type GstDevice): a #GList of
* #GstDevice
*
* Since: 1.4
*/
GList *
gst_device_monitor_get_devices (GstDeviceMonitor * monitor)
{
GstDeviceMonitorClass *klass;
GList *devices = NULL;
gboolean started;
GList *item;
g_return_val_if_fail (GST_IS_DEVICE_MONITOR (monitor), NULL);
klass = GST_DEVICE_MONITOR_GET_CLASS (monitor);
g_mutex_lock (&monitor->priv->start_lock);
started = (monitor->priv->started_count > 0);
if (started) {
GST_OBJECT_LOCK (monitor);
for (item = monitor->devices; item; item = item->next)
devices = g_list_prepend (devices, gst_object_ref (item->data));
GST_OBJECT_UNLOCK (monitor);
} else if (klass->probe)
devices = klass->probe (monitor);
g_mutex_unlock (&monitor->priv->start_lock);
return devices;
}
/**
* gst_device_monitor_start:
* @monitor: A #GstDeviceMonitor
*
* Starts monitoring the devices. This will cause #GST_MESSAGE_DEVICE messages
* to be posted on the monitor's bus when devices are added or removed from
* the system.
*
* Since the #GstDeviceMonitor is a singleton,
* gst_device_monitor_start() may already have been called by another
* user of the object, gst_device_monitor_stop() needs to be called the same
* number of times.
*
* Returns: %TRUE if the device monitoring could be started
*
* Since: 1.4
*/
gboolean
gst_device_monitor_start (GstDeviceMonitor * monitor)
{
GstDeviceMonitorClass *klass;
gboolean ret = FALSE;
g_return_val_if_fail (GST_IS_DEVICE_MONITOR (monitor), FALSE);
klass = GST_DEVICE_MONITOR_GET_CLASS (monitor);
g_mutex_lock (&monitor->priv->start_lock);
if (monitor->priv->started_count > 0) {
ret = TRUE;
goto started;
}
if (klass->start)
ret = klass->start (monitor);
if (ret) {
monitor->priv->started_count++;
gst_bus_set_flushing (monitor->priv->bus, FALSE);
}
started:
g_mutex_unlock (&monitor->priv->start_lock);
return ret;
}
/**
* gst_device_monitor_stop:
* @monitor: A #GstDeviceMonitor
*
* Decreases the use-count by one. If the use count reaches zero, this
* #GstDeviceMonitor will stop monitoring the devices. This needs to be
* called the same number of times that gst_device_monitor_start() was called.
*
* Since: 1.4
*/
void
gst_device_monitor_stop (GstDeviceMonitor * monitor)
{
GstDeviceMonitorClass *klass;
g_return_if_fail (GST_IS_DEVICE_MONITOR (monitor));
klass = GST_DEVICE_MONITOR_GET_CLASS (monitor);
g_mutex_lock (&monitor->priv->start_lock);
if (monitor->priv->started_count == 1) {
gst_bus_set_flushing (monitor->priv->bus, TRUE);
if (klass->stop)
klass->stop (monitor);
GST_OBJECT_LOCK (monitor);
g_list_free_full (monitor->devices, (GDestroyNotify) gst_object_unparent);
monitor->devices = NULL;
GST_OBJECT_UNLOCK (monitor);
} else if (monitor->priv->started_count < 1) {
g_critical ("Trying to stop a GstDeviceMonitor %s which is already stopped",
GST_OBJECT_NAME (monitor));
}
monitor->priv->started_count--;
g_mutex_unlock (&monitor->priv->start_lock);
}
/**
* gst_device_monitor_get_factory:
* @monitor: a #GstDeviceMonitor to request the device monitor factory of.
*
* Retrieves the factory that was used to create this device monitor.
*
* Returns: (transfer none): the #GstDeviceMonitorFactory used for creating this
* device monitor. no refcounting is needed.
*
* Since: 1.4
*/
GstDeviceMonitorFactory *
gst_device_monitor_get_factory (GstDeviceMonitor * monitor)
{
g_return_val_if_fail (GST_IS_DEVICE_MONITOR (monitor), NULL);
return GST_DEVICE_MONITOR_GET_CLASS (monitor)->factory;
}
/**
* gst_device_monitor_can_monitor:
* @monitor: a #GstDeviceMonitor
*
* If this function returns %TRUE, then the device monitor can monitor if
* devices are added or removed. Otherwise, it can only do static probing.
*
* Returns: %TRUE if the #GstDeviceMonitor support monitoring, %FALSE otherwise
*/
gboolean
gst_device_monitor_can_monitor (GstDeviceMonitor * monitor)
{
GstDeviceMonitorClass *klass;
g_return_val_if_fail (GST_IS_DEVICE_MONITOR (monitor), FALSE);
klass = GST_DEVICE_MONITOR_GET_CLASS (monitor);
if (klass->start)
return TRUE;
else
return FALSE;
}
/**
* gst_device_monitor_get_bus:
* @monitor: a #GstDeviceMonitor
*
* Gets the #GstBus of this #GstDeviceMonitor
*
* Returns: (transfer full): a #GstBus
*
* Since: 1.4
*/
GstBus *
gst_device_monitor_get_bus (GstDeviceMonitor * monitor)
{
g_return_val_if_fail (GST_IS_DEVICE_MONITOR (monitor), NULL);
return gst_object_ref (monitor->priv->bus);
}
/**
* gst_device_monitor_device_add:
* @monitor: a #GstDeviceMonitor
* @device: (transfer full): a #GstDevice that has been added
*
* Posts a message on the monitor's #GstBus to inform applications that
* a new device has been added.
*
* This is for use by subclasses.
*
* Since: 1.4
*/
void
gst_device_monitor_device_add (GstDeviceMonitor * monitor, GstDevice * device)
{
GstMessage *message;
if (!gst_object_set_parent (GST_OBJECT (device), GST_OBJECT (monitor))) {
GST_WARNING_OBJECT (monitor, "Could not parent device %p to monitor,"
" it already has a parent", device);
return;
}
GST_OBJECT_LOCK (monitor);
monitor->devices = g_list_prepend (monitor->devices, gst_object_ref (device));
GST_OBJECT_UNLOCK (monitor);
message = gst_message_new_device_added (GST_OBJECT (monitor), device);
gst_bus_post (monitor->priv->bus, message);
gst_object_unref (device);
}
/**
* gst_device_monitor_device_remove:
* @monitor: a #GstDeviceMonitor
* @device: a #GstDevice that has been removed
*
* Posts a message on the monitor's #GstBus to inform applications that
* a device has been removed.
*
* This is for use by subclasses.
*
* Since: 1.4
*/
void
gst_device_monitor_device_remove (GstDeviceMonitor * monitor,
GstDevice * device)
{
GstMessage *message;
GList *item;
GST_OBJECT_LOCK (monitor);
item = g_list_find (monitor->devices, device);
if (item) {
monitor->devices = g_list_delete_link (monitor->devices, item);
}
GST_OBJECT_UNLOCK (monitor);
message = gst_message_new_device_removed (GST_OBJECT (monitor), device);
g_signal_emit_by_name (device, "removed");
gst_bus_post (monitor->priv->bus, message);
if (item)
gst_object_unparent (GST_OBJECT (device));
}

90
gst/gstdevicemonitorfactory.h
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@ -1,90 +0,0 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000,2004 Wim Taymans <wim@fluendo.com>
* 2012 Olivier Crete <olivier.crete@collabora.com>
*
* gstdevicemonitorfactory.h: Header for GstDeviceMonitorFactory
*
* 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_MONITOR_FACTORY_H__
#define __GST_DEVICE_MONITOR_FACTORY_H__
/**
* GstDeviceMonitorFactory:
*
* The opaque #GstDeviceMonitorFactory data structure.
*
* Since: 1.4
*/
/**
* GstDeviceMonitorFactoryClass:
*
* The opaque #GstDeviceMonitorFactoryClass data structure.
*
* Since: 1.4
*/
typedef struct _GstDeviceMonitorFactory GstDeviceMonitorFactory;
typedef struct _GstDeviceMonitorFactoryClass GstDeviceMonitorFactoryClass;
#include <gst/gstconfig.h>
#include <gst/gstplugin.h>
#include <gst/gstpluginfeature.h>
#include <gst/gstdevicemonitor.h>
G_BEGIN_DECLS
#define GST_TYPE_DEVICE_MONITOR_FACTORY (gst_device_monitor_factory_get_type())
#define GST_DEVICE_MONITOR_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DEVICE_MONITOR_FACTORY,\
GstDeviceMonitorFactory))
#define GST_DEVICE_MONITOR_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DEVICE_MONITOR_FACTORY,\
GstDeviceMonitorFactoryClass))
#define GST_IS_DEVICE_MONITOR_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DEVICE_MONITOR_FACTORY))
#define GST_IS_DEVICE_MONITOR_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DEVICE_MONITOR_FACTORY))
#define GST_DEVICE_MONITOR_FACTORY_CAST(obj) ((GstDeviceMonitorFactory *)(obj))
GType gst_device_monitor_factory_get_type (void);
GstDeviceMonitorFactory * gst_device_monitor_factory_find (const gchar *name);
GType gst_device_monitor_factory_get_device_monitor_type (GstDeviceMonitorFactory *factory);
const gchar * gst_device_monitor_factory_get_metadata (GstDeviceMonitorFactory *factory, const gchar *key);
gchar ** gst_device_monitor_factory_get_metadata_keys (GstDeviceMonitorFactory *factory);
GstDeviceMonitor* gst_device_monitor_factory_get (GstDeviceMonitorFactory *factory) G_GNUC_MALLOC;
GstDeviceMonitor* gst_device_monitor_factory_get_by_name (const gchar *factoryname) G_GNUC_MALLOC;
gboolean gst_device_monitor_register (GstPlugin *plugin, const gchar *name,
guint rank,
GType type);
gboolean gst_device_monitor_factory_has_classesv (GstDeviceMonitorFactory * factory,
gchar ** classes);
gboolean gst_device_monitor_factory_has_classes (GstDeviceMonitorFactory *factory,
const gchar * classes);
GList * gst_device_monitor_factory_list_get_device_monitors (const gchar *classes,
GstRank minrank) G_GNUC_MALLOC;
G_END_DECLS
#endif /* __GST_DEVICE_MONITOR_FACTORY_H__ */

591
gst/gstdeviceprovider.c Normal file
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@ -0,0 +1,591 @@
/* GStreamer
* Copyright (C) 2012 Olivier Crete <olivier.crete@collabora.com>
*
* gstdeviceprovider.c: 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.
*/
/**
* SECTION:gstdeviceprovider
* @short_description: A device provider, monitor and prober
* @see_also: #GstDevice, #GstGlobalDeviceMonitor
*
* A #GstDeviceProvider subclass is provided by a plugin that handles devices
* if there is a way to programatically list connected devices. It can also
* optionally provide updates to the list of connected devices.
*
* Each #GstDeviceProvider subclass is a singleton, a plugin should
* normally provide a single subclass for all devices.
*
* Applications would normally use a #GstGlobalDeviceMonitor to monitor devices
* from all relevant providers.
*
* Since: 1.4
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gst_private.h"
#include "gstdeviceprovider.h"
#include "gstelementmetadata.h"
#include "gstquark.h"
struct _GstDeviceProviderPrivate
{
GstBus *bus;
GMutex start_lock;
gboolean started_count;
};
/* this is used in gstelementfactory.c:gst_element_register() */
GQuark __gst_deviceproviderclass_factory = 0;
static void gst_device_provider_class_init (GstDeviceProviderClass * klass);
static void gst_device_provider_init (GstDeviceProvider * element);
static void gst_device_provider_base_class_init (gpointer g_class);
static void gst_device_provider_base_class_finalize (gpointer g_class);
static void gst_device_provider_dispose (GObject * object);
static void gst_device_provider_finalize (GObject * object);
static gpointer gst_device_provider_parent_class = NULL;
GType
gst_device_provider_get_type (void)
{
static volatile gsize gst_device_provider_type = 0;
if (g_once_init_enter (&gst_device_provider_type)) {
GType _type;
static const GTypeInfo element_info = {
sizeof (GstDeviceProviderClass),
gst_device_provider_base_class_init,
gst_device_provider_base_class_finalize,
(GClassInitFunc) gst_device_provider_class_init,
NULL,
NULL,
sizeof (GstDeviceProvider),
0,
(GInstanceInitFunc) gst_device_provider_init,
NULL
};
_type = g_type_register_static (GST_TYPE_OBJECT, "GstDeviceProvider",
&element_info, G_TYPE_FLAG_ABSTRACT);
__gst_deviceproviderclass_factory =
g_quark_from_static_string ("GST_DEVICEPROVIDERCLASS_FACTORY");
g_once_init_leave (&gst_device_provider_type, _type);
}
return gst_device_provider_type;
}
static void
gst_device_provider_base_class_init (gpointer g_class)
{
GstDeviceProviderClass *klass = GST_DEVICE_PROVIDER_CLASS (g_class);
/* Copy the element details here so elements can inherit the
* details from their base class and classes only need to set
* the details in class_init instead of base_init */
klass->metadata =
klass->metadata ? gst_structure_copy (klass->metadata) :
gst_structure_new_empty ("metadata");
klass->factory = g_type_get_qdata (G_TYPE_FROM_CLASS (klass),
__gst_deviceproviderclass_factory);
}
static void
gst_device_provider_base_class_finalize (gpointer g_class)
{
GstDeviceProviderClass *klass = GST_DEVICE_PROVIDER_CLASS (g_class);
gst_structure_free (klass->metadata);
}
static void
gst_device_provider_class_init (GstDeviceProviderClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
gst_device_provider_parent_class = g_type_class_peek_parent (klass);
g_type_class_add_private (klass, sizeof (GstDeviceProviderPrivate));
gobject_class->dispose = gst_device_provider_dispose;
gobject_class->finalize = gst_device_provider_finalize;
}
static void
gst_device_provider_init (GstDeviceProvider * provider)
{
provider->priv = G_TYPE_INSTANCE_GET_PRIVATE (provider,
GST_TYPE_DEVICE_PROVIDER, GstDeviceProviderPrivate);
g_mutex_init (&provider->priv->start_lock);
provider->priv->bus = gst_bus_new ();
gst_bus_set_flushing (provider->priv->bus, TRUE);
}
static void
gst_device_provider_dispose (GObject * object)
{
GstDeviceProvider *provider = GST_DEVICE_PROVIDER (object);
gst_object_replace ((GstObject **) & provider->priv->bus, NULL);
GST_OBJECT_LOCK (provider);
g_list_free_full (provider->devices, (GDestroyNotify) gst_object_unparent);
provider->devices = NULL;
GST_OBJECT_UNLOCK (provider);
G_OBJECT_CLASS (gst_device_provider_parent_class)->dispose (object);
}
static void
gst_device_provider_finalize (GObject * object)
{
GstDeviceProvider *provider = GST_DEVICE_PROVIDER (object);
g_mutex_clear (&provider->priv->start_lock);
G_OBJECT_CLASS (gst_device_provider_parent_class)->finalize (object);
}
/**
* gst_device_provider_class_add_metadata:
* @klass: class to set metadata for
* @key: the key to set
* @value: the value to set
*
* Set @key with @value as metadata in @klass.
*/
void
gst_device_provider_class_add_metadata (GstDeviceProviderClass * klass,
const gchar * key, const gchar * value)
{
g_return_if_fail (GST_IS_DEVICE_PROVIDER_CLASS (klass));
g_return_if_fail (key != NULL);
g_return_if_fail (value != NULL);
gst_structure_set ((GstStructure *) klass->metadata,
key, G_TYPE_STRING, value, NULL);
}
/**
* gst_device_provider_class_add_static_metadata:
* @klass: class to set metadata for
* @key: the key to set
* @value: the value to set
*
* Set @key with @value as metadata in @klass.
*
* Same as gst_device_provider_class_add_metadata(), but @value must be a static string
* or an inlined string, as it will not be copied. (GStreamer plugins will
* be made resident once loaded, so this function can be used even from
* dynamically loaded plugins.)
*
* Since: 1.4
*/
void
gst_device_provider_class_add_static_metadata (GstDeviceProviderClass * klass,
const gchar * key, const gchar * value)
{
GValue val = G_VALUE_INIT;
g_return_if_fail (GST_IS_DEVICE_PROVIDER_CLASS (klass));
g_return_if_fail (key != NULL);
g_return_if_fail (value != NULL);
g_value_init (&val, G_TYPE_STRING);
g_value_set_static_string (&val, value);
gst_structure_take_value ((GstStructure *) klass->metadata, key, &val);
}
/**
* gst_device_provider_class_set_metadata:
* @klass: class to set metadata for
* @longname: The long English name of the device provider. E.g. "File Sink"
* @classification: String describing the type of device provider, as an
* unordered list separated with slashes ('/'). See draft-klass.txt of the
* design docs
* for more details and common types. E.g: "Sink/File"
* @description: Sentence describing the purpose of the device provider.
* E.g: "Write stream to a file"
* @author: Name and contact details of the author(s). Use \n to separate
* multiple author metadata. E.g: "Joe Bloggs &lt;joe.blogs at foo.com&gt;"
*
* Sets the detailed information for a #GstDeviceProviderClass.
* <note>This function is for use in _class_init functions only.</note>
*
* Since: 1.4
*/
void
gst_device_provider_class_set_metadata (GstDeviceProviderClass * klass,
const gchar * longname, const gchar * classification,
const gchar * description, const gchar * author)
{
g_return_if_fail (GST_IS_DEVICE_PROVIDER_CLASS (klass));
g_return_if_fail (longname != NULL && *longname != '\0');
g_return_if_fail (classification != NULL && *classification != '\0');
g_return_if_fail (description != NULL && *description != '\0');
g_return_if_fail (author != NULL && *author != '\0');
gst_structure_id_set ((GstStructure *) klass->metadata,
GST_QUARK (ELEMENT_METADATA_LONGNAME), G_TYPE_STRING, longname,
GST_QUARK (ELEMENT_METADATA_KLASS), G_TYPE_STRING, classification,
GST_QUARK (ELEMENT_METADATA_DESCRIPTION), G_TYPE_STRING, description,
GST_QUARK (ELEMENT_METADATA_AUTHOR), G_TYPE_STRING, author, NULL);
}
/**
* gst_device_provider_class_set_static_metadata:
* @klass: class to set metadata for
* @longname: The long English name of the element. E.g. "File Sink"
* @classification: String describing the type of element, as an unordered list
* separated with slashes ('/'). See draft-klass.txt of the design docs
* for more details and common types. E.g: "Sink/File"
* @description: Sentence describing the purpose of the element.
* E.g: "Write stream to a file"
* @author: Name and contact details of the author(s). Use \n to separate
* multiple author metadata. E.g: "Joe Bloggs &lt;joe.blogs at foo.com&gt;"
*
* Sets the detailed information for a #GstDeviceProviderClass.
* <note>This function is for use in _class_init functions only.</note>
*
* Same as gst_device_provider_class_set_metadata(), but @longname, @classification,
* @description, and @author must be static strings or inlined strings, as
* they will not be copied. (GStreamer plugins will be made resident once
* loaded, so this function can be used even from dynamically loaded plugins.)
*
* Since: 1.4
*/
void
gst_device_provider_class_set_static_metadata (GstDeviceProviderClass * klass,
const gchar * longname, const gchar * classification,
const gchar * description, const gchar * author)
{
GstStructure *s = (GstStructure *) klass->metadata;
GValue val = G_VALUE_INIT;
g_return_if_fail (GST_IS_DEVICE_PROVIDER_CLASS (klass));
g_return_if_fail (longname != NULL && *longname != '\0');
g_return_if_fail (classification != NULL && *classification != '\0');
g_return_if_fail (description != NULL && *description != '\0');
g_return_if_fail (author != NULL && *author != '\0');
g_value_init (&val, G_TYPE_STRING);
g_value_set_static_string (&val, longname);
gst_structure_id_set_value (s, GST_QUARK (ELEMENT_METADATA_LONGNAME), &val);
g_value_set_static_string (&val, classification);
gst_structure_id_set_value (s, GST_QUARK (ELEMENT_METADATA_KLASS), &val);
g_value_set_static_string (&val, description);
gst_structure_id_set_value (s, GST_QUARK (ELEMENT_METADATA_DESCRIPTION),
&val);
g_value_set_static_string (&val, author);
gst_structure_id_take_value (s, GST_QUARK (ELEMENT_METADATA_AUTHOR), &val);
}
/**
* gst_device_provider_class_get_metadata:
* @klass: class to get metadata for
* @key: the key to get
*
* Get metadata with @key in @klass.
*
* Returns: the metadata for @key.
*
* Since: 1.4
*/
const gchar *
gst_device_provider_class_get_metadata (GstDeviceProviderClass * klass,
const gchar * key)
{
g_return_val_if_fail (GST_IS_DEVICE_PROVIDER_CLASS (klass), NULL);
g_return_val_if_fail (key != NULL, NULL);
return gst_structure_get_string ((GstStructure *) klass->metadata, key);
}
/**
* gst_device_provider_get_devices:
* @provider: A #GstDeviceProvider
*
* Gets a list of devices that this provider understands. This may actually
* probe the hardware if the provider is not currently started.
*
* Returns: (transfer full) (element-type GstDevice): a #GList of
* #GstDevice
*
* Since: 1.4
*/
GList *
gst_device_provider_get_devices (GstDeviceProvider * provider)
{
GstDeviceProviderClass *klass;
GList *devices = NULL;
gboolean started;
GList *item;
g_return_val_if_fail (GST_IS_DEVICE_PROVIDER (provider), NULL);
klass = GST_DEVICE_PROVIDER_GET_CLASS (provider);
g_mutex_lock (&provider->priv->start_lock);
started = (provider->priv->started_count > 0);
if (started) {
GST_OBJECT_LOCK (provider);
for (item = provider->devices; item; item = item->next)
devices = g_list_prepend (devices, gst_object_ref (item->data));
GST_OBJECT_UNLOCK (provider);
} else if (klass->probe)
devices = klass->probe (provider);
g_mutex_unlock (&provider->priv->start_lock);
return devices;
}
/**
* gst_device_provider_start:
* @provider: A #GstDeviceProvider
*
* Starts providering the devices. This will cause #GST_MESSAGE_DEVICE messages
* to be posted on the provider's bus when devices are added or removed from
* the system.
*
* Since the #GstDeviceProvider is a singleton,
* gst_device_provider_start() may already have been called by another
* user of the object, gst_device_provider_stop() needs to be called the same
* number of times.
*
* Returns: %TRUE if the device providering could be started
*
* Since: 1.4
*/
gboolean
gst_device_provider_start (GstDeviceProvider * provider)
{
GstDeviceProviderClass *klass;
gboolean ret = FALSE;
g_return_val_if_fail (GST_IS_DEVICE_PROVIDER (provider), FALSE);
klass = GST_DEVICE_PROVIDER_GET_CLASS (provider);
g_mutex_lock (&provider->priv->start_lock);
if (provider->priv->started_count > 0) {
ret = TRUE;
goto started;
}
if (klass->start)
ret = klass->start (provider);
if (ret) {
provider->priv->started_count++;
gst_bus_set_flushing (provider->priv->bus, FALSE);
}
started:
g_mutex_unlock (&provider->priv->start_lock);
return ret;
}
/**
* gst_device_provider_stop:
* @provider: A #GstDeviceProvider
*
* Decreases the use-count by one. If the use count reaches zero, this
* #GstDeviceProvider will stop providering the devices. This needs to be
* called the same number of times that gst_device_provider_start() was called.
*
* Since: 1.4
*/
void
gst_device_provider_stop (GstDeviceProvider * provider)
{
GstDeviceProviderClass *klass;
g_return_if_fail (GST_IS_DEVICE_PROVIDER (provider));
klass = GST_DEVICE_PROVIDER_GET_CLASS (provider);
g_mutex_lock (&provider->priv->start_lock);
if (provider->priv->started_count == 1) {
gst_bus_set_flushing (provider->priv->bus, TRUE);
if (klass->stop)
klass->stop (provider);
GST_OBJECT_LOCK (provider);
g_list_free_full (provider->devices, (GDestroyNotify) gst_object_unparent);
provider->devices = NULL;
GST_OBJECT_UNLOCK (provider);
} else if (provider->priv->started_count < 1) {
g_critical
("Trying to stop a GstDeviceProvider %s which is already stopped",
GST_OBJECT_NAME (provider));
}
provider->priv->started_count--;
g_mutex_unlock (&provider->priv->start_lock);
}
/**
* gst_device_provider_get_factory:
* @provider: a #GstDeviceProvider to request the device provider factory of.
*
* Retrieves the factory that was used to create this device provider.
*
* Returns: (transfer none): the #GstDeviceProviderFactory used for
* creating this device provider. no refcounting is needed.
*
* Since: 1.4
*/
GstDeviceProviderFactory *
gst_device_provider_get_factory (GstDeviceProvider * provider)
{
g_return_val_if_fail (GST_IS_DEVICE_PROVIDER (provider), NULL);
return GST_DEVICE_PROVIDER_GET_CLASS (provider)->factory;
}
/**
* gst_device_provider_can_provider:
* @provider: a #GstDeviceProvider
*
* If this function returns %TRUE, then the device provider can provider if
* devices are added or removed. Otherwise, it can only do static probing.
*
* Returns: %TRUE if the #GstDeviceProvider support providering, %FALSE otherwise
*/
gboolean
gst_device_provider_can_monitor (GstDeviceProvider * provider)
{
GstDeviceProviderClass *klass;
g_return_val_if_fail (GST_IS_DEVICE_PROVIDER (provider), FALSE);
klass = GST_DEVICE_PROVIDER_GET_CLASS (provider);
if (klass->start)
return TRUE;
else
return FALSE;
}
/**
* gst_device_provider_get_bus:
* @provider: a #GstDeviceProvider
*
* Gets the #GstBus of this #GstDeviceProvider
*
* Returns: (transfer full): a #GstBus
*
* Since: 1.4
*/
GstBus *
gst_device_provider_get_bus (GstDeviceProvider * provider)
{
g_return_val_if_fail (GST_IS_DEVICE_PROVIDER (provider), NULL);
return gst_object_ref (provider->priv->bus);
}
/**
* gst_device_provider_device_add:
* @provider: a #GstDeviceProvider
* @device: (transfer full): a #GstDevice that has been added
*
* Posts a message on the provider's #GstBus to inform applications that
* a new device has been added.
*
* This is for use by subclasses.
*
* Since: 1.4
*/
void
gst_device_provider_device_add (GstDeviceProvider * provider,
GstDevice * device)
{
GstMessage *message;
if (!gst_object_set_parent (GST_OBJECT (device), GST_OBJECT (provider))) {
GST_WARNING_OBJECT (provider, "Could not parent device %p to provider,"
" it already has a parent", device);
return;
}
GST_OBJECT_LOCK (provider);
provider->devices = g_list_prepend (provider->devices,
gst_object_ref (device));
GST_OBJECT_UNLOCK (provider);
message = gst_message_new_device_added (GST_OBJECT (provider), device);
gst_bus_post (provider->priv->bus, message);
gst_object_unref (device);
}
/**
* gst_device_provider_device_remove:
* @provider: a #GstDeviceProvider
* @device: a #GstDevice that has been removed
*
* Posts a message on the provider's #GstBus to inform applications that
* a device has been removed.
*
* This is for use by subclasses.
*
* Since: 1.4
*/
void
gst_device_provider_device_remove (GstDeviceProvider * provider,
GstDevice * device)
{
GstMessage *message;
GList *item;
GST_OBJECT_LOCK (provider);
item = g_list_find (provider->devices, device);
if (item) {
provider->devices = g_list_delete_link (provider->devices, item);
}
GST_OBJECT_UNLOCK (provider);
message = gst_message_new_device_removed (GST_OBJECT (provider), device);
g_signal_emit_by_name (device, "removed");
gst_bus_post (provider->priv->bus, message);
if (item)
gst_object_unparent (GST_OBJECT (device));
}

86
gst/gstdevicemonitor.h → gst/gstdeviceprovider.h
View file

@ -1,7 +1,7 @@
/* GStreamer
* Copyright (C) 2012 Olivier Crete <olivier.crete@collabora.com>
*
* gstdevicemonitor.h: Device probing and monitoring
* 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
@ -19,39 +19,39 @@
* Boston, MA 02111-1307, USA.
*/
#include <gst/gstdevicemonitorfactory.h>
#include <gst/gstdeviceproviderfactory.h>
#ifndef __GST_DEVICE_MONITOR_H__
#define __GST_DEVICE_MONITOR_H__
#ifndef __GST_DEVICE_PROVIDER_H__
#define __GST_DEVICE_PROVIDER_H__
#include <gst/gstelement.h>
G_BEGIN_DECLS
typedef struct _GstDeviceMonitor GstDeviceMonitor;
typedef struct _GstDeviceMonitorClass GstDeviceMonitorClass;
typedef struct _GstDeviceMonitorPrivate GstDeviceMonitorPrivate;
typedef struct _GstDeviceProvider GstDeviceProvider;
typedef struct _GstDeviceProviderClass GstDeviceProviderClass;
typedef struct _GstDeviceProviderPrivate GstDeviceProviderPrivate;
#define GST_TYPE_DEVICE_MONITOR (gst_device_monitor_get_type())
#define GST_IS_DEVICE_MONITOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_DEVICE_MONITOR))
#define GST_IS_DEVICE_MONITOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_DEVICE_MONITOR))
#define GST_DEVICE_MONITOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_DEVICE_MONITOR, GstDeviceMonitorClass))
#define GST_DEVICE_MONITOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_DEVICE_MONITOR, GstDeviceMonitor))
#define GST_DEVICE_MONITOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_DEVICE_MONITOR, GstDeviceMonitorClass))
#define GST_DEVICE_MONITOR_CAST(obj) ((GstDeviceMonitor *)(obj))
#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))
/**
* GstDeviceMonitor:
* GstDeviceProvider:
* @parent: The parent #GstObject
* @devices: a #GList of the #GstDevice objects
*
* The structure of the base #GstDeviceMonitor
* The structure of the base #GstDeviceProvider
*
* Since: 1.4
*/
struct _GstDeviceMonitor {
struct _GstDeviceProvider {
GstObject parent;
/* Protected by the Object lock */
@ -59,16 +59,16 @@ struct _GstDeviceMonitor {
/*< private >*/
GstDeviceMonitorPrivate *priv;
GstDeviceProviderPrivate *priv;
gpointer _gst_reserved[GST_PADDING];
};
/**
* GstDeviceMonitorClass:
* GstDeviceProviderClass:
* @parent_class: the parent #GstObjectClass structure
* @factory: a pointer to the #GstDeviceMonitorFactory that creates this
* monitor
* @factory: a pointer to the #GstDeviceProviderFactory that creates this
* provider
* @probe: Returns a list of devices that are currently available.
* This should never block.
* @start: Starts monitoring for new devices. Only subclasses that can know
@ -76,20 +76,20 @@ struct _GstDeviceMonitor {
* @stop: Stops monitoring for new devices. Only subclasses that implement
* the start() method need to implement this method.
*
* The structure of the base #GstDeviceMonitorClass
* The structure of the base #GstDeviceProviderClass
*
* Since: 1.4
*/
struct _GstDeviceMonitorClass {
struct _GstDeviceProviderClass {
GstObjectClass parent_class;
GstDeviceMonitorFactory *factory;
GstDeviceProviderFactory *factory;
GList* (*probe) (GstDeviceMonitor * monitor);
GList* (*probe) (GstDeviceProvider * provider);
gboolean (*start) (GstDeviceMonitor * monitor);
void (*stop) (GstDeviceMonitor * monitor);
gboolean (*start) (GstDeviceProvider * provider);
void (*stop) (GstDeviceProvider * provider);
/*< private >*/
gpointer metadata;
@ -98,45 +98,45 @@ struct _GstDeviceMonitorClass {
gpointer _gst_reserved[GST_PADDING];
};
GType gst_device_monitor_get_type (void);
GType gst_device_provider_get_type (void);
GList * gst_device_monitor_get_devices (GstDeviceMonitor * monitor);
GList * gst_device_provider_get_devices (GstDeviceProvider * provider);
gboolean gst_device_monitor_start (GstDeviceMonitor * monitor);
void gst_device_monitor_stop (GstDeviceMonitor * monitor);
gboolean gst_device_provider_start (GstDeviceProvider * provider);
void gst_device_provider_stop (GstDeviceProvider * provider);
gboolean gst_device_monitor_can_monitor (GstDeviceMonitor * monitor);
gboolean gst_device_provider_can_monitor (GstDeviceProvider * provider);
GstBus * gst_device_monitor_get_bus (GstDeviceMonitor * monitor);
GstBus * gst_device_provider_get_bus (GstDeviceProvider * provider);
void gst_device_monitor_device_add (GstDeviceMonitor * monitor,
void gst_device_provider_device_add (GstDeviceProvider * provider,
GstDevice * device);
void gst_device_monitor_device_remove (GstDeviceMonitor * monitor,
void gst_device_provider_device_remove (GstDeviceProvider * provider,
GstDevice * device);
/* device monitor class meta data */
void gst_device_monitor_class_set_metadata (GstDeviceMonitorClass *klass,
/* device provider class meta data */
void gst_device_provider_class_set_metadata (GstDeviceProviderClass *klass,
const gchar *longname,
const gchar *classification,
const gchar *description,
const gchar *author);
void gst_device_monitor_class_set_static_metadata (GstDeviceMonitorClass *klass,
void gst_device_provider_class_set_static_metadata (GstDeviceProviderClass *klass,
const gchar *longname,
const gchar *classification,
const gchar *description,
const gchar *author);
void gst_device_monitor_class_add_metadata (GstDeviceMonitorClass * klass,
void gst_device_provider_class_add_metadata (GstDeviceProviderClass * klass,
const gchar * key, const gchar * value);
void gst_device_monitor_class_add_static_metadata (GstDeviceMonitorClass * klass,
void gst_device_provider_class_add_static_metadata (GstDeviceProviderClass * klass,
const gchar * key, const gchar * value);
const gchar * gst_device_monitor_class_get_metadata (GstDeviceMonitorClass * klass,
const gchar * gst_device_provider_class_get_metadata (GstDeviceProviderClass * klass,
const gchar * key);
/* factory management */
GstDeviceMonitorFactory * gst_device_monitor_get_factory (GstDeviceMonitor * monitor);
GstDeviceProviderFactory * gst_device_provider_get_factory (GstDeviceProvider * provider);
G_END_DECLS
#endif /* __GST_DEVICE_MONITOR_H__ */
#endif /* __GST_DEVICE_PROVIDER_H__ */

283
gst/gstdevicemonitorfactory.c → gst/gstdeviceproviderfactory.c
View file

@ -3,7 +3,7 @@
* 2000 Wim Taymans <wtay@chello.be>
* 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
*
* gstdevicemonitorfactory.c: GstDeviceMonitorFactory object, support routines
* gstdeviceproviderfactory.c: GstDeviceProviderFactory object, support routines
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -22,16 +22,16 @@
*/
/**
* SECTION:gstdevicemonitorfactory
* @short_description: Create GstDeviceMonitors from a factory
* @see_also: #GstDeviceMonitor, #GstPlugin, #GstPluginFeature, #GstPadTemplate.
* SECTION:gstdeviceproviderfactory
* @short_description: Create GstDeviceProviders from a factory
* @see_also: #GstDeviceProvider, #GstPlugin, #GstPluginFeature, #GstPadTemplate.
*
* #GstDeviceMonitorFactory is used to create instances of device monitors. A
* GstDeviceMonitorfactory can be added to a #GstPlugin as it is also a
* #GstDeviceProviderFactory is used to create instances of device providers. A
* GstDeviceProviderfactory can be added to a #GstPlugin as it is also a
* #GstPluginFeature.
*
* Use the gst_device_monitor_factory_find() and gst_device_monitor_factory_create()
* functions to create device monitor instances or use gst_device_monitor_factory_make() as a
* Use the gst_device_provider_factory_find() and gst_device_provider_factory_create()
* functions to create device provider instances or use gst_device_provider_factory_make() as a
* convenient shortcut.
*
* Since: 1.4
@ -43,94 +43,94 @@
#include "gst_private.h"
#include "gstdevicemonitorfactory.h"
#include "gstdeviceproviderfactory.h"
#include "gst.h"
#include "glib-compat-private.h"
GST_DEBUG_CATEGORY_STATIC (device_monitor_factory_debug);
#define GST_CAT_DEFAULT device_monitor_factory_debug
GST_DEBUG_CATEGORY_STATIC (device_provider_factory_debug);
#define GST_CAT_DEFAULT device_provider_factory_debug
static void gst_device_monitor_factory_finalize (GObject * object);
static void gst_device_monitor_factory_cleanup (GstDeviceMonitorFactory *
static void gst_device_provider_factory_finalize (GObject * object);
static void gst_device_provider_factory_cleanup (GstDeviceProviderFactory *
factory);
/* static guint gst_device_monitor_factory_signals[LAST_SIGNAL] = { 0 }; */
/* static guint gst_device_provider_factory_signals[LAST_SIGNAL] = { 0 }; */
/* this is defined in gstelement.c */
extern GQuark __gst_devicemonitorclass_factory;
extern GQuark __gst_deviceproviderclass_factory;
#define _do_init \
{ \
GST_DEBUG_CATEGORY_INIT (device_monitor_factory_debug, "GST_DEVICE_MONITOR_FACTORY", \
GST_DEBUG_CATEGORY_INIT (device_provider_factory_debug, "GST_DEVICE_PROVIDER_FACTORY", \
GST_DEBUG_BOLD | GST_DEBUG_FG_WHITE | GST_DEBUG_BG_RED, \
"device monitor factories keep information about installed device monitors"); \
"device provider factories keep information about installed device providers"); \
}
G_DEFINE_TYPE_WITH_CODE (GstDeviceMonitorFactory, gst_device_monitor_factory,
G_DEFINE_TYPE_WITH_CODE (GstDeviceProviderFactory, gst_device_provider_factory,
GST_TYPE_PLUGIN_FEATURE, _do_init);
static void
gst_device_monitor_factory_class_init (GstDeviceMonitorFactoryClass * klass)
gst_device_provider_factory_class_init (GstDeviceProviderFactoryClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
gobject_class->finalize = gst_device_monitor_factory_finalize;
gobject_class->finalize = gst_device_provider_factory_finalize;
}
static void
gst_device_monitor_factory_init (GstDeviceMonitorFactory * factory)
gst_device_provider_factory_init (GstDeviceProviderFactory * factory)
{
}
static void
gst_device_monitor_factory_finalize (GObject * object)
gst_device_provider_factory_finalize (GObject * object)
{
GstDeviceMonitorFactory *factory = GST_DEVICE_MONITOR_FACTORY (object);
GstDeviceMonitor *monitor;
GstDeviceProviderFactory *factory = GST_DEVICE_PROVIDER_FACTORY (object);
GstDeviceProvider *provider;
gst_device_monitor_factory_cleanup (factory);
gst_device_provider_factory_cleanup (factory);
monitor = g_atomic_pointer_get (&factory->monitor);
if (monitor)
gst_object_unref (monitor);
provider = g_atomic_pointer_get (&factory->provider);
if (provider)
gst_object_unref (provider);
G_OBJECT_CLASS (gst_device_monitor_factory_parent_class)->finalize (object);
G_OBJECT_CLASS (gst_device_provider_factory_parent_class)->finalize (object);
}
/**
* gst_device_monitor_factory_find:
* gst_device_provider_factory_find:
* @name: name of factory to find
*
* Search for an device monitor factory of the given name. Refs the returned
* device monitor factory; caller is responsible for unreffing.
* Search for an device provider factory of the given name. Refs the returned
* device provider factory; caller is responsible for unreffing.
*
* Returns: (transfer full) (nullable): #GstDeviceMonitorFactory if
* Returns: (transfer full) (nullable): #GstDeviceProviderFactory if
* found, %NULL otherwise
*
* Since: 1.4
*/
GstDeviceMonitorFactory *
gst_device_monitor_factory_find (const gchar * name)
GstDeviceProviderFactory *
gst_device_provider_factory_find (const gchar * name)
{
GstPluginFeature *feature;
g_return_val_if_fail (name != NULL, NULL);
feature = gst_registry_find_feature (gst_registry_get (), name,
GST_TYPE_DEVICE_MONITOR_FACTORY);
GST_TYPE_DEVICE_PROVIDER_FACTORY);
if (feature)
return GST_DEVICE_MONITOR_FACTORY (feature);
return GST_DEVICE_PROVIDER_FACTORY (feature);
/* this isn't an error, for instance when you query if an device monitor factory is
/* this isn't an error, for instance when you query if an device provider factory is
* present */
GST_LOG ("no such device monitor factory \"%s\"", name);
GST_LOG ("no such device provider factory \"%s\"", name);
return NULL;
}
static void
gst_device_monitor_factory_cleanup (GstDeviceMonitorFactory * factory)
gst_device_provider_factory_cleanup (GstDeviceProviderFactory * factory)
{
if (factory->metadata) {
gst_structure_free ((GstStructure *) factory->metadata);
@ -143,22 +143,22 @@ gst_device_monitor_factory_cleanup (GstDeviceMonitorFactory * factory)
#define CHECK_METADATA_FIELD(klass, name, key) \
G_STMT_START { \
const gchar *metafield = gst_device_monitor_class_get_metadata (klass, key); \
const gchar *metafield = gst_device_provider_class_get_metadata (klass, key); \
if (G_UNLIKELY (metafield == NULL || *metafield == '\0')) { \
g_warning ("Device monitor factory metadata for '%s' has no valid %s field", name, key); \
g_warning ("Device provider factory metadata for '%s' has no valid %s field", name, key); \
goto detailserror; \
} \
} G_STMT_END;
/**
* gst_device_monitor_register:
* @plugin: (allow-none): #GstPlugin to register the device monitor with, or %NULL for
* a static device monitor.
* @name: name of device monitors of this type
* @rank: rank of device monitor (higher rank means more importance when autoplugging)
* @type: GType of device monitor to register
* gst_device_provider_register:
* @plugin: (allow-none): #GstPlugin to register the device provider with, or %NULL for
* a static device provider.
* @name: name of device providers of this type
* @rank: rank of device provider (higher rank means more importance when autoplugging)
* @type: GType of device provider to register
*
* Create a new device monitorfactory capable of instantiating objects of the
* Create a new device providerfactory capable of instantiating objects of the
* @type and add the factory to @plugin.
*
* Returns: %TRUE, if the registering succeeded, %FALSE on error
@ -166,16 +166,16 @@ gst_device_monitor_factory_cleanup (GstDeviceMonitorFactory * factory)
* Since: 1.4
*/
gboolean
gst_device_monitor_register (GstPlugin * plugin, const gchar * name, guint rank,
GType type)
gst_device_provider_register (GstPlugin * plugin, const gchar * name,
guint rank, GType type)
{
GstPluginFeature *existing_feature;
GstRegistry *registry;
GstDeviceMonitorFactory *factory;
GstDeviceMonitorClass *klass;
GstDeviceProviderFactory *factory;
GstDeviceProviderClass *klass;
g_return_val_if_fail (name != NULL, FALSE);
g_return_val_if_fail (g_type_is_a (type, GST_TYPE_DEVICE_MONITOR), FALSE);
g_return_val_if_fail (g_type_is_a (type, GST_TYPE_DEVICE_PROVIDER), FALSE);
registry = gst_registry_get ();
@ -187,24 +187,24 @@ gst_device_monitor_register (GstPlugin * plugin, const gchar * name, guint rank,
if (existing_feature) {
GST_DEBUG_OBJECT (registry, "update existing feature %p (%s)",
existing_feature, name);
factory = GST_DEVICE_MONITOR_FACTORY_CAST (existing_feature);
factory = GST_DEVICE_PROVIDER_FACTORY_CAST (existing_feature);
factory->type = type;
existing_feature->loaded = TRUE;
g_type_set_qdata (type, __gst_devicemonitorclass_factory, factory);
g_type_set_qdata (type, __gst_deviceproviderclass_factory, factory);
gst_object_unref (existing_feature);
return TRUE;
}
factory =
GST_DEVICE_MONITOR_FACTORY_CAST (g_object_newv
(GST_TYPE_DEVICE_MONITOR_FACTORY, 0, NULL));
GST_DEVICE_PROVIDER_FACTORY_CAST (g_object_newv
(GST_TYPE_DEVICE_PROVIDER_FACTORY, 0, NULL));
gst_plugin_feature_set_name (GST_PLUGIN_FEATURE_CAST (factory), name);
GST_LOG_OBJECT (factory, "Created new device monitorfactory for type %s",
GST_LOG_OBJECT (factory, "Created new device providerfactory for type %s",
g_type_name (type));
/* provide info needed during class structure setup */
g_type_set_qdata (type, __gst_devicemonitorclass_factory, factory);
klass = GST_DEVICE_MONITOR_CLASS (g_type_class_ref (type));
g_type_set_qdata (type, __gst_deviceproviderclass_factory, factory);
klass = GST_DEVICE_PROVIDER_CLASS (g_type_class_ref (type));
CHECK_METADATA_FIELD (klass, name, GST_ELEMENT_METADATA_LONGNAME);
CHECK_METADATA_FIELD (klass, name, GST_ELEMENT_METADATA_KLASS);
@ -233,34 +233,34 @@ gst_device_monitor_register (GstPlugin * plugin, const gchar * name, guint rank,
/* ERRORS */
detailserror:
{
gst_device_monitor_factory_cleanup (factory);
gst_device_provider_factory_cleanup (factory);
return FALSE;
}
}
/**
* gst_device_monitor_factory_get:
* gst_device_provider_factory_get:
* @factory: factory to instantiate
*
* Returns the device monitor of the type defined by the given device
* monitorfactory.
* Returns the device provider of the type defined by the given device
* providerfactory.
*
* Returns: (transfer full) (nullable): the #GstDeviceMonitor or %NULL
* if the device monitor couldn't be created
* Returns: (transfer full) (nullable): the #GstDeviceProvider or %NULL
* if the device provider couldn't be created
*
* Since: 1.4
*/
GstDeviceMonitor *
gst_device_monitor_factory_get (GstDeviceMonitorFactory * factory)
GstDeviceProvider *
gst_device_provider_factory_get (GstDeviceProviderFactory * factory)
{
GstDeviceMonitor *device_monitor;
GstDeviceMonitorClass *oclass;
GstDeviceMonitorFactory *newfactory;
GstDeviceProvider *device_provider;
GstDeviceProviderClass *oclass;
GstDeviceProviderFactory *newfactory;
g_return_val_if_fail (factory != NULL, NULL);
newfactory =
GST_DEVICE_MONITOR_FACTORY (gst_plugin_feature_load (GST_PLUGIN_FEATURE
GST_DEVICE_PROVIDER_FACTORY (gst_plugin_feature_load (GST_PLUGIN_FEATURE
(factory)));
if (newfactory == NULL)
@ -268,45 +268,45 @@ gst_device_monitor_factory_get (GstDeviceMonitorFactory * factory)
factory = newfactory;
GST_INFO ("getting device monitor \"%s\"", GST_OBJECT_NAME (factory));
GST_INFO ("getting device provider \"%s\"", GST_OBJECT_NAME (factory));
if (factory->type == 0)
goto no_type;
device_monitor = g_atomic_pointer_get (&newfactory->monitor);
if (device_monitor)
return gst_object_ref (device_monitor);
device_provider = g_atomic_pointer_get (&newfactory->provider);
if (device_provider)
return gst_object_ref (device_provider);
/* create an instance of the device monitor, cast so we don't assert on NULL
/* create an instance of the device provider, cast so we don't assert on NULL
* also set name as early as we can
*/
device_monitor = GST_DEVICE_MONITOR_CAST (g_object_newv (factory->type, 0,
device_provider = GST_DEVICE_PROVIDER_CAST (g_object_newv (factory->type, 0,
NULL));
if (G_UNLIKELY (device_monitor == NULL))
goto no_device_monitor;
if (G_UNLIKELY (device_provider == NULL))
goto no_device_provider;
/* fill in the pointer to the factory in the device monitor class. The
/* fill in the pointer to the factory in the device provider class. The
* class will not be unreffed currently.
* Be thread safe as there might be 2 threads creating the first instance of
* an device monitor at the same moment
* an device provider at the same moment
*/
oclass = GST_DEVICE_MONITOR_GET_CLASS (device_monitor);
oclass = GST_DEVICE_PROVIDER_GET_CLASS (device_provider);
if (!g_atomic_pointer_compare_and_exchange (&oclass->factory, NULL, factory))
gst_object_unref (factory);
gst_object_ref_sink (device_monitor);
gst_object_ref_sink (device_provider);
/* We use an atomic to make sure we don't create two in parallel */
if (!g_atomic_pointer_compare_and_exchange (&newfactory->monitor, NULL,
device_monitor)) {
gst_object_unref (device_monitor);
if (!g_atomic_pointer_compare_and_exchange (&newfactory->provider, NULL,
device_provider)) {
gst_object_unref (device_provider);
device_monitor = g_atomic_pointer_get (&newfactory->monitor);
device_provider = g_atomic_pointer_get (&newfactory->provider);
}
GST_DEBUG ("created device monitor \"%s\"", GST_OBJECT_NAME (factory));
GST_DEBUG ("created device provider \"%s\"", GST_OBJECT_NAME (factory));
return gst_object_ref (device_monitor);
return gst_object_ref (device_provider);
/* ERRORS */
load_failed:
@ -322,53 +322,53 @@ no_type:
gst_object_unref (factory);
return NULL;
}
no_device_monitor:
no_device_provider:
{
GST_WARNING_OBJECT (factory, "could not create device monitor");
GST_WARNING_OBJECT (factory, "could not create device provider");
gst_object_unref (factory);
return NULL;
}
}
/**
* gst_device_monitor_factory_get_by_name:
* gst_device_provider_factory_get_by_name:
* @factoryname: a named factory to instantiate
*
* Returns the device monitor of the type defined by the given device
* monitor factory.
* Returns the device provider of the type defined by the given device
* provider factory.
*
* Returns: (transfer full) (nullable): a #GstDeviceMonitor or %NULL
* if unable to create device monitor
* Returns: (transfer full) (nullable): a #GstDeviceProvider or %NULL
* if unable to create device provider
*
* Since: 1.4
*/
GstDeviceMonitor *
gst_device_monitor_factory_get_by_name (const gchar * factoryname)
GstDeviceProvider *
gst_device_provider_factory_get_by_name (const gchar * factoryname)
{
GstDeviceMonitorFactory *factory;
GstDeviceMonitor *device_monitor;
GstDeviceProviderFactory *factory;
GstDeviceProvider *device_provider;
g_return_val_if_fail (factoryname != NULL, NULL);
g_return_val_if_fail (gst_is_initialized (), NULL);
GST_LOG ("gstdevicemonitorfactory: get_by_name \"%s\"", factoryname);
GST_LOG ("gstdeviceproviderfactory: get_by_name \"%s\"", factoryname);
factory = gst_device_monitor_factory_find (factoryname);
factory = gst_device_provider_factory_find (factoryname);
if (factory == NULL)
goto no_factory;
GST_LOG_OBJECT (factory, "found factory %p", factory);
device_monitor = gst_device_monitor_factory_get (factory);
if (device_monitor == NULL)
device_provider = gst_device_provider_factory_get (factory);
if (device_provider == NULL)
goto create_failed;
gst_object_unref (factory);
return device_monitor;
return device_provider;
/* ERRORS */
no_factory:
{
GST_INFO ("no such device monitor factory \"%s\"!", factoryname);
GST_INFO ("no such device provider factory \"%s\"!", factoryname);
return NULL;
}
create_failed:
@ -380,30 +380,30 @@ create_failed:
}
/**
* gst_device_monitor_factory_get_device_monitor_type:
* gst_device_provider_factory_get_device_provider_type:
* @factory: factory to get managed #GType from
*
* Get the #GType for device monitors managed by this factory. The type can
* only be retrieved if the device monitor factory is loaded, which can be
* Get the #GType for device providers managed by this factory. The type can
* only be retrieved if the device provider factory is loaded, which can be
* assured with gst_plugin_feature_load().
*
* Returns: the #GType for device monitors managed by this factory or 0 if
* Returns: the #GType for device providers managed by this factory or 0 if
* the factory is not loaded.
*
* Since: 1.4
*/
GType
gst_device_monitor_factory_get_device_monitor_type (GstDeviceMonitorFactory *
gst_device_provider_factory_get_device_provider_type (GstDeviceProviderFactory *
factory)
{
g_return_val_if_fail (GST_IS_DEVICE_MONITOR_FACTORY (factory), 0);
g_return_val_if_fail (GST_IS_DEVICE_PROVIDER_FACTORY (factory), 0);
return factory->type;
}
/**
* gst_device_monitor_factory_get_metadata:
* @factory: a #GstDeviceMonitorFactory
* gst_device_provider_factory_get_metadata:
* @factory: a #GstDeviceProviderFactory
* @key: a key
*
* Get the metadata on @factory with @key.
@ -414,15 +414,15 @@ gst_device_monitor_factory_get_device_monitor_type (GstDeviceMonitorFactory *
* Since: 1.4
*/
const gchar *
gst_device_monitor_factory_get_metadata (GstDeviceMonitorFactory * factory,
gst_device_provider_factory_get_metadata (GstDeviceProviderFactory * factory,
const gchar * key)
{
return gst_structure_get_string ((GstStructure *) factory->metadata, key);
}
/**
* gst_device_monitor_factory_get_metadata_keys:
* @factory: a #GstDeviceMonitorFactory
* gst_device_provider_factory_get_metadata_keys:
* @factory: a #GstDeviceProviderFactory
*
* Get the available keys for the metadata on @factory.
*
@ -433,13 +433,14 @@ gst_device_monitor_factory_get_metadata (GstDeviceMonitorFactory * factory,
* Since: 1.4
*/
gchar **
gst_device_monitor_factory_get_metadata_keys (GstDeviceMonitorFactory * factory)
gst_device_provider_factory_get_metadata_keys (GstDeviceProviderFactory *
factory)
{
GstStructure *metadata;
gchar **arr;
gint i, num;
g_return_val_if_fail (GST_IS_DEVICE_MONITOR_FACTORY (factory), NULL);
g_return_val_if_fail (GST_IS_DEVICE_PROVIDER_FACTORY (factory), NULL);
metadata = (GstStructure *) factory->metadata;
if (metadata == NULL)
@ -458,8 +459,8 @@ gst_device_monitor_factory_get_metadata_keys (GstDeviceMonitorFactory * factory)
}
/**
* gst_device_monitor_factory_has_classesv:
* @factory: a #GstDeviceMonitorFactory
* gst_device_provider_factory_has_classesv:
* @factory: a #GstDeviceProviderFactory
* @classes: (array zero-terminated=1): a %NULL terminated array of
* klasses to match, only match if all classes are matched
*
@ -470,19 +471,19 @@ gst_device_monitor_factory_get_metadata_keys (GstDeviceMonitorFactory * factory)
* Since: 1.4
*/
gboolean
gst_device_monitor_factory_has_classesv (GstDeviceMonitorFactory * factory,
gst_device_provider_factory_has_classesv (GstDeviceProviderFactory * factory,
gchar ** classes)
{
const gchar *klass;
g_return_val_if_fail (GST_IS_DEVICE_MONITOR_FACTORY (factory), FALSE);
g_return_val_if_fail (GST_IS_DEVICE_PROVIDER_FACTORY (factory), FALSE);
klass = gst_device_monitor_factory_get_metadata (factory,
klass = gst_device_provider_factory_get_metadata (factory,
GST_ELEMENT_METADATA_KLASS);
if (klass == NULL) {
GST_ERROR_OBJECT (factory,
"device monitor factory is missing klass identifiers");
"device provider factory is missing klass identifiers");
return FALSE;
}
@ -509,8 +510,8 @@ gst_device_monitor_factory_has_classesv (GstDeviceMonitorFactory * factory,
}
/**
* gst_device_monitor_factory_has_classes:
* @factory: a #GstDeviceMonitorFactory
* gst_device_provider_factory_has_classes:
* @factory: a #GstDeviceProviderFactory
* @classes: a "/" separate list of klasses to match, only match if all classes
* are matched
*
@ -521,7 +522,7 @@ gst_device_monitor_factory_has_classesv (GstDeviceMonitorFactory * factory,
* Since: 1.4
*/
gboolean
gst_device_monitor_factory_has_classes (GstDeviceMonitorFactory * factory,
gst_device_provider_factory_has_classes (GstDeviceProviderFactory * factory,
const gchar * classes)
{
gchar **classesv;
@ -529,7 +530,7 @@ gst_device_monitor_factory_has_classes (GstDeviceMonitorFactory * factory,
classesv = g_strsplit (classes, "/", 0);
res = gst_device_monitor_factory_has_classesv (factory, classesv);
res = gst_device_provider_factory_has_classesv (factory, classesv);
g_strfreev (classesv);
@ -543,38 +544,38 @@ typedef struct
} FilterData;
static gboolean
device_monitor_filter (GstPluginFeature * feature, FilterData * data)
device_provider_filter (GstPluginFeature * feature, FilterData * data)
{
gboolean res;
/* we only care about device monitor factories */
if (G_UNLIKELY (!GST_IS_DEVICE_MONITOR_FACTORY (feature)))
/* we only care about device provider factories */
if (G_UNLIKELY (!GST_IS_DEVICE_PROVIDER_FACTORY (feature)))
return FALSE;
res = (gst_plugin_feature_get_rank (feature) >= data->minrank) &&
gst_device_monitor_factory_has_classes (GST_DEVICE_MONITOR_FACTORY_CAST
gst_device_provider_factory_has_classes (GST_DEVICE_PROVIDER_FACTORY_CAST
(feature), data->classes);
return res;
}
/**
* gst_device_monitor_factory_list_get_device_monitors:
* gst_device_provider_factory_list_get_device_providers:
* @classes: a "/" separate list of klasses to match, only match if all classes
* are matched
* @minrank: Minimum rank
*
* Get a list of factories that match all of the given @classes. Only
* device monitors with a rank greater or equal to @minrank will be
* device providers with a rank greater or equal to @minrank will be
* returned. The list of factories is returned by decreasing rank.
*
* Returns: (transfer full) (element-type Gst.DeviceMonitorFactory): a #GList of
* #GstDeviceMonitorFactory device monitors. Use gst_plugin_feature_list_free() after
* Returns: (transfer full) (element-type Gst.DeviceProviderFactory): a #GList of
* #GstDeviceProviderFactory device providers. Use gst_plugin_feature_list_free() after
* usage.
*
* Since: 1.4
*/
GList *gst_device_monitor_factory_list_get_device_monitors
GList *gst_device_provider_factory_list_get_device_providers
(const gchar * classes, GstRank minrank)
{
GList *result;
@ -586,7 +587,7 @@ GList *gst_device_monitor_factory_list_get_device_monitors
/* get the feature list using the filter */
result = gst_registry_feature_filter (gst_registry_get (),
(GstPluginFeatureFilter) device_monitor_filter, FALSE, &data);
(GstPluginFeatureFilter) device_provider_filter, FALSE, &data);
/* sort on rank and name */
result = g_list_sort (result, gst_plugin_feature_rank_compare_func);

90
gst/gstdeviceproviderfactory.h Normal file
View file

@ -0,0 +1,90 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000,2004 Wim Taymans <wim@fluendo.com>
* 2012 Olivier Crete <olivier.crete@collabora.com>
*
* gstdeviceproviderfactory.h: Header for GstDeviceProviderFactory
*
* 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_FACTORY_H__
#define __GST_DEVICE_PROVIDER_FACTORY_H__
/**
* GstDeviceProviderFactory:
*
* The opaque #GstDeviceProviderFactory data structure.
*
* Since: 1.4
*/
/**
* GstDeviceProviderFactoryClass:
*
* The opaque #GstDeviceProviderFactoryClass data structure.
*
* Since: 1.4
*/
typedef struct _GstDeviceProviderFactory GstDeviceProviderFactory;
typedef struct _GstDeviceProviderFactoryClass GstDeviceProviderFactoryClass;
#include <gst/gstconfig.h>
#include <gst/gstplugin.h>
#include <gst/gstpluginfeature.h>
#include <gst/gstdeviceprovider.h>
G_BEGIN_DECLS
#define GST_TYPE_DEVICE_PROVIDER_FACTORY (gst_device_provider_factory_get_type())
#define GST_DEVICE_PROVIDER_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DEVICE_PROVIDER_FACTORY,\
GstDeviceProviderFactory))
#define GST_DEVICE_PROVIDER_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DEVICE_PROVIDER_FACTORY,\
GstDeviceProviderFactoryClass))
#define GST_IS_DEVICE_PROVIDER_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DEVICE_PROVIDER_FACTORY))
#define GST_IS_DEVICE_PROVIDER_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DEVICE_PROVIDER_FACTORY))
#define GST_DEVICE_PROVIDER_FACTORY_CAST(obj) ((GstDeviceProviderFactory *)(obj))
GType gst_device_provider_factory_get_type (void);
GstDeviceProviderFactory * gst_device_provider_factory_find (const gchar *name);
GType gst_device_provider_factory_get_device_provider_type (GstDeviceProviderFactory *factory);
const gchar * gst_device_provider_factory_get_metadata (GstDeviceProviderFactory *factory, const gchar *key);
gchar ** gst_device_provider_factory_get_metadata_keys (GstDeviceProviderFactory *factory);
GstDeviceProvider* gst_device_provider_factory_get (GstDeviceProviderFactory *factory) G_GNUC_MALLOC;
GstDeviceProvider* gst_device_provider_factory_get_by_name (const gchar *factoryname) G_GNUC_MALLOC;
gboolean gst_device_provider_register (GstPlugin *plugin, const gchar *name,
guint rank,
GType type);
gboolean gst_device_provider_factory_has_classesv (GstDeviceProviderFactory * factory,
gchar ** classes);
gboolean gst_device_provider_factory_has_classes (GstDeviceProviderFactory *factory,
const gchar * classes);
GList * gst_device_provider_factory_list_get_device_providers (const gchar *classes,
GstRank minrank) G_GNUC_MALLOC;
G_END_DECLS
#endif /* __GST_DEVICE_PROVIDER_FACTORY_H__ */

97
gst/gstglobaldevicemonitor.c
View file

@ -22,12 +22,12 @@
/**
* SECTION:gstglobaldevicemonitor
* @short_description: A global device monitor and prober
* @see_also: #GstDevice, #GstDeviceMonitor
* @see_also: #GstDevice, #GstDeviceProvider
*
* Applications should create a #GstGlobalDeviceMonitor when they want
* to probe, list and monitor devices of a specific type. The
* #GstGlobalDeviceMonitor will create the appropriate
* #GstDeviceMonitor objects and manage them. It will then post
* #GstDeviceProvider objects and manage them. It will then post
* messages on its #GstBus for devices that have been added and
* removed.
*
@ -48,7 +48,7 @@ struct _GstGlobalDeviceMonitorPrivate
GstBus *bus;
GPtrArray *monitors;
GPtrArray *providers;
guint cookie;
GstCaps *caps;
@ -111,28 +111,28 @@ gst_global_device_monitor_init (GstGlobalDeviceMonitor * self)
self->priv->bus = gst_bus_new ();
gst_bus_set_flushing (self->priv->bus, TRUE);
self->priv->monitors = g_ptr_array_new ();
self->priv->providers = g_ptr_array_new ();
self->priv->caps = gst_caps_new_any ();
self->priv->classes = g_strdup ("");
factories =
gst_device_monitor_factory_list_get_device_monitors (self->priv->classes,
1);
gst_device_provider_factory_list_get_device_providers (self->priv->
classes, 1);
while (factories) {
GstDeviceMonitorFactory *factory = factories->data;
GstDeviceMonitor *monitor;
GstDeviceProviderFactory *factory = factories->data;
GstDeviceProvider *provider;
factories = g_list_remove (factories, factory);
monitor = gst_device_monitor_factory_get (factory);
if (monitor) {
GstBus *bus = gst_device_monitor_get_bus (monitor);
provider = gst_device_provider_factory_get (factory);
if (provider) {
GstBus *bus = gst_device_provider_get_bus (provider);
gst_bus_enable_sync_message_emission (bus);
g_signal_connect (bus, "sync-message",
G_CALLBACK (bus_sync_message), self);
g_ptr_array_add (self->priv->monitors, monitor);
g_ptr_array_add (self->priv->providers, provider);
}
gst_object_unref (factory);
@ -143,16 +143,16 @@ gst_global_device_monitor_init (GstGlobalDeviceMonitor * self)
static void
gst_global_device_monitor_remove (GstGlobalDeviceMonitor * self, guint i)
{
GstDeviceMonitor *monitor = g_ptr_array_index (self->priv->monitors, i);
GstDeviceProvider *provider = g_ptr_array_index (self->priv->providers, i);
GstBus *bus;
g_ptr_array_remove_index_fast (self->priv->monitors, i);
g_ptr_array_remove_index_fast (self->priv->providers, i);
bus = gst_device_monitor_get_bus (monitor);
bus = gst_device_provider_get_bus (provider);
g_signal_handlers_disconnect_by_func (bus, bus_sync_message, self);
gst_object_unref (bus);
gst_object_unref (monitor);
gst_object_unref (provider);
}
static void
@ -162,11 +162,11 @@ gst_global_device_monitor_dispose (GObject * object)
g_return_if_fail (self->priv->started == FALSE);
if (self->priv->monitors) {
while (self->priv->monitors->len)
gst_global_device_monitor_remove (self, self->priv->monitors->len - 1);
g_ptr_array_unref (self->priv->monitors);
self->priv->monitors = NULL;
if (self->priv->providers) {
while (self->priv->providers->len)
gst_global_device_monitor_remove (self, self->priv->providers->len - 1);
g_ptr_array_unref (self->priv->providers);
self->priv->providers = NULL;
}
gst_caps_replace (&self->priv->caps, NULL);
@ -178,7 +178,7 @@ gst_global_device_monitor_dispose (GObject * object)
/**
* gst_global_device_monitor_get_devices:
* @monitor: A #GstDeviceMonitor
* @monitor: A #GstDeviceProvider
*
* Gets a list of devices from all of the relevant monitors. This may actually
* probe the hardware if the global monitor is not currently started.
@ -207,15 +207,15 @@ again:
cookie = monitor->priv->cookie;
for (i = 0; i < monitor->priv->monitors->len; i++) {
for (i = 0; i < monitor->priv->providers->len; i++) {
GList *tmpdev;
GstDeviceMonitor *device_monitor =
gst_object_ref (g_ptr_array_index (monitor->priv->monitors, i));
GstDeviceProvider *provider =
gst_object_ref (g_ptr_array_index (monitor->priv->providers, i));
GList *item;
GST_OBJECT_UNLOCK (monitor);
tmpdev = gst_device_monitor_get_devices (device_monitor);
tmpdev = gst_device_provider_get_devices (provider);
for (item = tmpdev; item; item = item->next) {
GstDevice *dev = GST_DEVICE (item->data);
@ -228,7 +228,7 @@ again:
}
g_list_free_full (tmpdev, gst_object_unref);
gst_object_unref (device_monitor);
gst_object_unref (provider);
GST_OBJECT_LOCK (monitor);
@ -263,20 +263,20 @@ gst_global_device_monitor_start (GstGlobalDeviceMonitor * monitor)
GST_OBJECT_LOCK (monitor);
if (monitor->priv->monitors->len == 0) {
if (monitor->priv->providers->len == 0) {
GST_OBJECT_UNLOCK (monitor);
return FALSE;
}
gst_bus_set_flushing (monitor->priv->bus, FALSE);
for (i = 0; i < monitor->priv->monitors->len; i++) {
if (!gst_device_monitor_start (g_ptr_array_index (monitor->priv->monitors,
for (i = 0; i < monitor->priv->providers->len; i++) {
if (!gst_device_provider_start (g_ptr_array_index (monitor->priv->providers,
i))) {
gst_bus_set_flushing (monitor->priv->bus, TRUE);
for (; i != 0; i--)
gst_device_monitor_stop (g_ptr_array_index (monitor->priv->monitors,
gst_device_provider_stop (g_ptr_array_index (monitor->priv->providers,
i - 1));
GST_OBJECT_UNLOCK (monitor);
@ -292,7 +292,7 @@ gst_global_device_monitor_start (GstGlobalDeviceMonitor * monitor)
/**
* gst_global_device_monitor_stop:
* @monitor: A #GstDeviceMonitor
* @monitor: A #GstDeviceProvider
*
* Stops monitoring the devices.
*
@ -308,8 +308,8 @@ gst_global_device_monitor_stop (GstGlobalDeviceMonitor * monitor)
gst_bus_set_flushing (monitor->priv->bus, TRUE);
GST_OBJECT_LOCK (monitor);
for (i = 0; i < monitor->priv->monitors->len; i++)
gst_device_monitor_stop (g_ptr_array_index (monitor->priv->monitors, i));
for (i = 0; i < monitor->priv->providers->len; i++)
gst_device_provider_stop (g_ptr_array_index (monitor->priv->providers, i));
monitor->priv->started = FALSE;
GST_OBJECT_UNLOCK (monitor);
@ -345,15 +345,16 @@ gst_global_device_monitor_set_classes_filter (GstGlobalDeviceMonitor * monitor,
g_free (monitor->priv->classes);
monitor->priv->classes = g_strdup (classes);
factories = gst_device_monitor_factory_list_get_device_monitors (classes, 1);
factories = gst_device_provider_factory_list_get_device_providers (classes,
1);
for (i = 0; i < monitor->priv->monitors->len; i++) {
GstDeviceMonitor *dev_monitor;
GstDeviceMonitorFactory *f;
for (i = 0; i < monitor->priv->providers->len; i++) {
GstDeviceProvider *provider;
GstDeviceProviderFactory *f;
GList *item;
dev_monitor = g_ptr_array_index (monitor->priv->monitors, i);
f = gst_device_monitor_get_factory (dev_monitor);
provider = g_ptr_array_index (monitor->priv->providers, i);
f = gst_device_provider_get_factory (provider);
item = g_list_find (factories, f);
@ -364,7 +365,7 @@ gst_global_device_monitor_set_classes_filter (GstGlobalDeviceMonitor * monitor,
factories = g_list_remove_link (factories, item);
gst_object_unref (f);
} else {
/* If it's not in our list, them remove it from the list of monitors.
/* If it's not in our list, them remove it from the list of providers.
*/
monitor->priv->cookie++;
@ -374,20 +375,20 @@ gst_global_device_monitor_set_classes_filter (GstGlobalDeviceMonitor * monitor,
}
while (factories) {
GstDeviceMonitorFactory *factory = factories->data;
GstDeviceMonitor *device_monitor;
GstDeviceProviderFactory *factory = factories->data;
GstDeviceProvider *provider;
factories = g_list_remove (factories, factory);
device_monitor = gst_device_monitor_factory_get (factory);
if (device_monitor) {
GstBus *bus = gst_device_monitor_get_bus (device_monitor);
provider = gst_device_provider_factory_get (factory);
if (provider) {
GstBus *bus = gst_device_provider_get_bus (provider);
gst_bus_enable_sync_message_emission (bus);
g_signal_connect (bus, "sync-message",
G_CALLBACK (bus_sync_message), monitor);
gst_object_unref (bus);
g_ptr_array_add (monitor->priv->monitors, device_monitor);
g_ptr_array_add (monitor->priv->providers, provider);
monitor->priv->cookie++;
}
@ -484,7 +485,7 @@ gst_global_device_monitor_new (void)
/**
* gst_global_device_monitor_get_bus:
* @monitor: a #GstDeviceMonitor
* @monitor: a #GstDeviceProvider
*
* Gets the #GstBus of this #GstGlobalDeviceMonitor
*

4
gst/gstglobaldevicemonitor.h
View file

@ -25,8 +25,8 @@
#include <gst/gstobject.h>
#include <gst/gstdevice.h>
#include <gst/gstdevicemonitor.h>
#include <gst/gstdevicemonitorfactory.h>
#include <gst/gstdeviceprovider.h>
#include <gst/gstdeviceproviderfactory.h>
G_BEGIN_DECLS

8
gst/gstmessage.c
View file

@ -2340,7 +2340,7 @@ gst_message_parse_have_context (GstMessage * message, GstContext ** context)
* @device: (transfer none): The new #GstDevice
*
* Creates a new device-added message. The device-added message is produced by
* #GstDeviceMonitor or a #GstGlobalDeviceMonitor. They announce the appearance
* #GstDeviceProvider or a #GstGlobalDeviceMonitor. They announce the appearance
* of monitored devices.
*
* Returns: a newly allocated #GstMessage
@ -2370,7 +2370,7 @@ gst_message_new_device_added (GstObject * src, GstDevice * device)
* pointer to the new #GstDevice, or %NULL
*
* Parses a device-added message. The device-added message is produced by
* #GstDeviceMonitor or a #GstGlobalDeviceMonitor. It announces the appearance
* #GstDeviceProvider or a #GstGlobalDeviceMonitor. It announces the appearance
* of monitored devices.
*
* Since: 1.4
@ -2392,7 +2392,7 @@ gst_message_parse_device_added (GstMessage * message, GstDevice ** device)
* @device: (transfer none): The removed #GstDevice
*
* Creates a new device-removed message. The device-removed message is produced
* by #GstDeviceMonitor or a #GstGlobalDeviceMonitor. They announce the
* by #GstDeviceProvider or a #GstGlobalDeviceMonitor. They announce the
* disappearance of monitored devices.
*
* Returns: a newly allocated #GstMessage
@ -2422,7 +2422,7 @@ gst_message_new_device_removed (GstObject * src, GstDevice * device)
* pointer to the removed #GstDevice, or %NULL
*
* Parses a device-removed message. The device-removed message is produced by
* #GstDeviceMonitor or a #GstGlobalDeviceMonitor. It announces the
* #GstDeviceProvider or a #GstGlobalDeviceMonitor. It announces the
* disappearance of monitored devices.
*
* Since: 1.4

4
gst/gstmessage.h
View file

@ -105,9 +105,9 @@ typedef struct _GstMessage GstMessage;
* filter for GST_MESSAGE_EXTENDED and then check the result for the
* specific type. (Since 1.4)
* @GST_MESSAGE_DEVICE_ADDED: Message indicating a #GstDevice was added to
* a #GstDeviceMonitor (Since 1.4)
* a #GstDeviceProvider (Since 1.4)
* @GST_MESSAGE_DEVICE_REMOVED: Message indicating a #GstDevice was removed
* from a #GstDeviceMonitor (Since 1.4)
* from a #GstDeviceProvider (Since 1.4)
* @GST_MESSAGE_ANY: mask for all of the above messages.
*
* The different message types that are available.

22
gst/gstregistry.c
View file

@ -127,7 +127,7 @@
#include "gstinfo.h"
#include "gsterror.h"
#include "gstregistry.h"
#include "gstdevicemonitorfactory.h"
#include "gstdeviceproviderfactory.h"
#include "gstpluginloader.h"
@ -166,7 +166,7 @@ struct _GstRegistryPrivate
guint32 efl_cookie;
GList *typefind_factory_list;
guint32 tfl_cookie;
GList *device_monitor_factory_list;
GList *device_provider_factory_list;
guint32 dmfl_cookie;
};
@ -317,10 +317,10 @@ gst_registry_finalize (GObject * object)
gst_plugin_feature_list_free (registry->priv->typefind_factory_list);
}
if (registry->priv->device_monitor_factory_list) {
if (registry->priv->device_provider_factory_list) {
GST_DEBUG_OBJECT (registry,
"Cleaning up cached device monitor factory list");
gst_plugin_feature_list_free (registry->priv->device_monitor_factory_list);
"Cleaning up cached device provider factory list");
gst_plugin_feature_list_free (registry->priv->device_provider_factory_list);
}
G_OBJECT_CLASS (parent_class)->finalize (object);
@ -789,20 +789,20 @@ gst_registry_get_typefind_factory_list (GstRegistry * registry)
static GList *
gst_registry_get_device_monitor_factory_list (GstRegistry * registry)
gst_registry_get_device_provider_factory_list (GstRegistry * registry)
{
GList *list;
GST_OBJECT_LOCK (registry);
gst_registry_get_feature_list_or_create (registry,
&registry->priv->device_monitor_factory_list,
&registry->priv->dmfl_cookie, GST_TYPE_DEVICE_MONITOR_FACTORY);
&registry->priv->device_provider_factory_list,
&registry->priv->dmfl_cookie, GST_TYPE_DEVICE_PROVIDER_FACTORY);
/* Return reffed copy */
list =
gst_plugin_feature_list_copy (registry->
priv->device_monitor_factory_list);
priv->device_provider_factory_list);
GST_OBJECT_UNLOCK (registry);
@ -953,8 +953,8 @@ gst_registry_get_feature_list (GstRegistry * registry, GType type)
return gst_registry_get_element_factory_list (registry);
else if (type == GST_TYPE_TYPE_FIND_FACTORY)
return gst_registry_get_typefind_factory_list (registry);
else if (type == GST_TYPE_DEVICE_MONITOR_FACTORY)
return gst_registry_get_device_monitor_factory_list (registry);
else if (type == GST_TYPE_DEVICE_PROVIDER_FACTORY)
return gst_registry_get_device_provider_factory_list (registry);
data.type = type;
data.name = NULL;

4
gst/gstregistrybinary.c
View file

@ -56,7 +56,7 @@
#include <gst/gstelement.h>
#include <gst/gsttypefind.h>
#include <gst/gsttypefindfactory.h>
#include <gst/gstdevicemonitorfactory.h>
#include <gst/gstdeviceproviderfactory.h>
#include <gst/gsturi.h>
#include <gst/gstinfo.h>
#include <gst/gstenumtypes.h>
@ -526,7 +526,7 @@ priv_gst_registry_binary_read_cache (GstRegistry * registry,
/* make sure these types exist */
GST_TYPE_ELEMENT_FACTORY;
GST_TYPE_TYPE_FIND_FACTORY;
GST_TYPE_DEVICE_MONITOR_FACTORY;
GST_TYPE_DEVICE_PROVIDER_FACTORY;
#ifndef GST_DISABLE_GST_DEBUG
timer = g_timer_new ();

20
gst/gstregistrychunks.c
View file

@ -33,7 +33,7 @@
#include <gst/gstelement.h>
#include <gst/gsttypefind.h>
#include <gst/gsttypefindfactory.h>
#include <gst/gstdevicemonitorfactory.h>
#include <gst/gstdeviceproviderfactory.h>
#include <gst/gsturi.h>
#include <gst/gstinfo.h>
#include <gst/gstenumtypes.h>
@ -333,17 +333,17 @@ gst_registry_chunks_save_feature (GList ** list, GstPluginFeature * feature)
} else {
gst_registry_chunks_save_const_string (list, "");
}
} else if (GST_IS_DEVICE_MONITOR_FACTORY (feature)) {
GstRegistryChunkDeviceMonitorFactory *tff;
GstDeviceMonitorFactory *factory = GST_DEVICE_MONITOR_FACTORY (feature);
} else if (GST_IS_DEVICE_PROVIDER_FACTORY (feature)) {
GstRegistryChunkDeviceProviderFactory *tff;
GstDeviceProviderFactory *factory = GST_DEVICE_PROVIDER_FACTORY (feature);
/* Initialize with zeroes because of struct padding and
* valgrind complaining about copying unitialized memory
*/
tff = g_slice_new0 (GstRegistryChunkDeviceMonitorFactory);
tff = g_slice_new0 (GstRegistryChunkDeviceProviderFactory);
chk =
gst_registry_chunks_make_data (tff,
sizeof (GstRegistryChunkDeviceMonitorFactory));
sizeof (GstRegistryChunkDeviceProviderFactory));
pf = (GstRegistryChunkPluginFeature *) tff;
@ -668,16 +668,16 @@ gst_registry_chunks_load_feature (GstRegistry * registry, gchar ** in,
factory->extensions[i - 1] = str;
}
}
} else if (GST_IS_DEVICE_MONITOR_FACTORY (feature)) {
GstRegistryChunkDeviceMonitorFactory *dmf;
GstDeviceMonitorFactory *factory = GST_DEVICE_MONITOR_FACTORY (feature);
} else if (GST_IS_DEVICE_PROVIDER_FACTORY (feature)) {
GstRegistryChunkDeviceProviderFactory *dmf;
GstDeviceProviderFactory *factory = GST_DEVICE_PROVIDER_FACTORY (feature);
const gchar *meta_data_str;
align (*in);
GST_DEBUG
("Reading/casting for GstRegistryChunkPluginFeature at address %p",
*in);
unpack_element (*in, dmf, GstRegistryChunkDeviceMonitorFactory, end, fail);
unpack_element (*in, dmf, GstRegistryChunkDeviceProviderFactory, end, fail);
pf = (GstRegistryChunkPluginFeature *) dmf;

8
gst/gstregistrychunks.h
View file

@ -132,15 +132,15 @@ typedef struct _GstRegistryChunkTypeFindFactory
} GstRegistryChunkTypeFindFactory;
/*
* GstRegistryChunkDeviceMonitorFactory:
* GstRegistryChunkDeviceProviderFactory:
*
* A structure containing the device monitor factory fields
* A structure containing the device provider factory fields
*/
typedef struct _GstRegistryChunkDeviceMonitorFactory
typedef struct _GstRegistryChunkDeviceProviderFactory
{
GstRegistryChunkPluginFeature plugin_feature;
} GstRegistryChunkDeviceMonitorFactory;
} GstRegistryChunkDeviceProviderFactory;
/*
* GstRegistryChunkPadTemplate:

16
tools/gst-inspect.c
View file

@ -1139,7 +1139,7 @@ print_plugin_features (GstPlugin * plugin)
gint num_features = 0;
gint num_elements = 0;
gint num_typefinders = 0;
gint num_devmonitors = 0;
gint num_devproviders = 0;
gint num_other = 0;
origlist = features =
@ -1180,14 +1180,14 @@ print_plugin_features (GstPlugin * plugin)
gst_plugin_feature_get_name (feature));
num_typefinders++;
} else if (GST_IS_DEVICE_MONITOR_FACTORY (feature)) {
GstDeviceMonitorFactory *factory;
} else if (GST_IS_DEVICE_PROVIDER_FACTORY (feature)) {
GstDeviceProviderFactory *factory;
factory = GST_DEVICE_MONITOR_FACTORY (feature);
factory = GST_DEVICE_PROVIDER_FACTORY (feature);
n_print (" %s: %s\n", GST_OBJECT_NAME (factory),
gst_device_monitor_factory_get_metadata (factory,
gst_device_provider_factory_get_metadata (factory,
GST_ELEMENT_METADATA_LONGNAME));
num_devmonitors++;
num_devproviders++;
} else if (feature) {
n_print (" %s (%s)\n", gst_object_get_name (GST_OBJECT (feature)),
g_type_name (G_OBJECT_TYPE (feature)));
@ -1205,8 +1205,8 @@ print_plugin_features (GstPlugin * plugin)
n_print (" +-- %d elements\n", num_elements);
if (num_typefinders > 0)
n_print (" +-- %d typefinders\n", num_typefinders);
if (num_devmonitors > 0)
n_print (" +-- %d device monitors\n", num_devmonitors);
if (num_devproviders > 0)
n_print (" +-- %d device providers\n", num_devproviders);
if (num_other > 0)
n_print (" +-- %d other objects\n", num_other);

50
win32/common/libgstreamer.def
View file

@ -415,31 +415,31 @@ EXPORTS
gst_device_get_type
gst_device_has_classes
gst_device_has_classesv
gst_device_monitor_can_monitor
gst_device_monitor_class_add_metadata
gst_device_monitor_class_add_static_metadata
gst_device_monitor_class_get_metadata
gst_device_monitor_class_set_metadata
gst_device_monitor_class_set_static_metadata
gst_device_monitor_device_add
gst_device_monitor_device_remove
gst_device_monitor_factory_find
gst_device_monitor_factory_get
gst_device_monitor_factory_get_by_name
gst_device_monitor_factory_get_device_monitor_type
gst_device_monitor_factory_get_metadata
gst_device_monitor_factory_get_metadata_keys
gst_device_monitor_factory_get_type
gst_device_monitor_factory_has_classes
gst_device_monitor_factory_has_classesv
gst_device_monitor_factory_list_get_device_monitors
gst_device_monitor_get_bus
gst_device_monitor_get_devices
gst_device_monitor_get_factory
gst_device_monitor_get_type
gst_device_monitor_register
gst_device_monitor_start
gst_device_monitor_stop
gst_device_provider_can_monitor
gst_device_provider_class_add_metadata
gst_device_provider_class_add_static_metadata
gst_device_provider_class_get_metadata
gst_device_provider_class_set_metadata
gst_device_provider_class_set_static_metadata
gst_device_provider_device_add
gst_device_provider_device_remove
gst_device_provider_factory_find
gst_device_provider_factory_get
gst_device_provider_factory_get_by_name
gst_device_provider_factory_get_device_provider_type
gst_device_provider_factory_get_metadata
gst_device_provider_factory_get_metadata_keys
gst_device_provider_factory_get_type
gst_device_provider_factory_has_classes
gst_device_provider_factory_has_classesv
gst_device_provider_factory_list_get_device_providers
gst_device_provider_get_bus
gst_device_provider_get_devices
gst_device_provider_get_factory
gst_device_provider_get_type
gst_device_provider_register
gst_device_provider_start
gst_device_provider_stop
gst_device_reconfigure_element
gst_double_range_get_type
gst_element_abort_state