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winks: add property probing support

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Andres Colubri 2009-08-31 19:28:50 +02:00 committed by Ole André Vadla Ravnås
parent 2cf589b928
commit 700f70e7a5
2 changed files with 105 additions and 5 deletions
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109
sys/winks/gstksvideosrc.c
View file

@ -1,5 +1,6 @@
/*
* Copyright (C) 2008 Ole André Vadla Ravnås <ole.andre.ravnas@tandberg.com>
* 2009 Andres Colubri <andres.colubri@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -123,12 +124,22 @@ typedef struct
(G_TYPE_INSTANCE_GET_PRIVATE ((o), GST_TYPE_KS_VIDEO_SRC, \
GstKsVideoSrcPrivate))
static void gst_ks_video_src_init_interfaces (GType type);
static void gst_ks_video_src_finalize (GObject * object);
static void gst_ks_video_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_ks_video_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_ks_video_src_probe_interface_init (GstPropertyProbeInterface *
iface);
static const GList *gst_ks_video_src_probe_get_properties (GstPropertyProbe *
probe);
static GValueArray *gst_ks_video_src_probe_get_values (GstPropertyProbe * probe,
guint prop_id, const GParamSpec * pspec);
static GValueArray *gst_ks_video_src_get_device_name_values (GstKsVideoSrc *
self);
static void gst_ks_video_src_reset (GstKsVideoSrc * self);
static GstStateChangeReturn gst_ks_video_src_change_state (GstElement * element,
@ -147,8 +158,8 @@ static gboolean gst_ks_video_src_unlock_stop (GstBaseSrc * basesrc);
static GstFlowReturn gst_ks_video_src_create (GstPushSrc * pushsrc,
GstBuffer ** buffer);
GST_BOILERPLATE (GstKsVideoSrc, gst_ks_video_src, GstPushSrc,
GST_TYPE_PUSH_SRC);
GST_BOILERPLATE_FULL (GstKsVideoSrc, gst_ks_video_src, GstPushSrc,
GST_TYPE_PUSH_SRC, gst_ks_video_src_init_interfaces);
static void
gst_ks_video_src_base_init (gpointer gclass)
@ -158,8 +169,9 @@ gst_ks_video_src_base_init (gpointer gclass)
gst_element_class_set_details_simple (element_class, "KsVideoSrc",
"Source/Video",
"Stream data from a video capture device through Windows kernel streaming",
"Ole André Vadla Ravnås <ole.andre.ravnas@tandberg.com>, "
"Haakon Sporsheim <hakon.sporsheim@tandberg.com>");
"Ole André Vadla Ravnås <ole.andre.ravnas@tandberg.com>\n"
"Haakon Sporsheim <hakon.sporsheim@tandberg.com>\n"
"Andres Colubri <andres.colubri@gmail.com>");
gst_element_class_add_pad_template (element_class,
gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
@ -302,8 +314,13 @@ gst_ks_video_src_set_property (GObject * object, guint prop_id,
priv->device_path = g_value_dup_string (value);
break;
case PROP_DEVICE_NAME:
{
const gchar *device_name = g_value_get_string (value);
g_free (priv->device_name);
priv->device_name = g_value_dup_string (value);
priv->device_name = NULL;
if (device_name && strlen (device_name) != 0)
priv->device_name = g_strdup (device_name);
}
break;
case PROP_DEVICE_INDEX:
priv->device_index = g_value_get_int (value);
@ -375,6 +392,88 @@ gst_ks_video_src_apply_driver_quirks (GstKsVideoSrc * self)
}
}
static void
gst_ks_video_src_init_interfaces (GType type)
{
static const GInterfaceInfo ksvideosrc_info = {
(GInterfaceInitFunc) gst_ks_video_src_probe_interface_init,
NULL,
NULL,
};
g_type_add_interface_static (type, GST_TYPE_PROPERTY_PROBE, &ksvideosrc_info);
}
static void
gst_ks_video_src_probe_interface_init (GstPropertyProbeInterface * iface)
{
iface->get_properties = gst_ks_video_src_probe_get_properties;
iface->get_values = gst_ks_video_src_probe_get_values;
}
static const GList *
gst_ks_video_src_probe_get_properties (GstPropertyProbe * probe)
{
GObjectClass *klass = G_OBJECT_GET_CLASS (probe);
static GList *props = NULL;
if (!props) {
GParamSpec *pspec;
pspec = g_object_class_find_property (klass, "device-name");
props = g_list_append (props, pspec);
}
return props;
}
static GValueArray *
gst_ks_video_src_probe_get_values (GstPropertyProbe * probe, guint prop_id,
const GParamSpec * pspec)
{
GstKsVideoSrc *src = GST_KS_VIDEO_SRC (probe);
GValueArray *array = NULL;
switch (prop_id) {
case PROP_DEVICE_NAME:
array = gst_ks_video_src_get_device_name_values (src);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec);
break;
}
return array;
}
static GValueArray *
gst_ks_video_src_get_device_name_values (GstKsVideoSrc * self)
{
GList *devices, *cur;
GValueArray *array = g_value_array_new (0);
devices = ks_enumerate_devices (&KSCATEGORY_VIDEO);
if (devices == NULL)
return array;
devices = ks_video_device_list_sort_cameras_first (devices);
for (cur = devices; cur != NULL; cur = cur->next) {
GValue value = { 0, };
KsDeviceEntry *entry = cur->data;
g_value_init (&value, G_TYPE_STRING);
g_value_set_string (&value, entry->name);
g_value_array_append (array, &value);
g_value_unset (&value);
ks_device_entry_free (entry);
}
g_list_free (devices);
return array;
}
static gboolean
gst_ks_video_src_open_device (GstKsVideoSrc * self)
{

1
sys/winks/gstksvideosrc.h
View file

@ -21,6 +21,7 @@
#define __GST_KS_VIDEO_SRC_H__
#include <gst/base/gstpushsrc.h>
#include <gst/interfaces/propertyprobe.h>
G_BEGIN_DECLS