/**
* SECTION:gstdevicemonitor
+ * @title: GstDeviceMonitor
* @short_description: A device monitor and prober
* @see_also: #GstDevice, #GstDeviceProvider
*
* The device monitor will monitor all devices matching the filters that
* the application has set.
*
- *
* The basic use pattern of a device monitor is as follows:
* |[
* static gboolean
* name = gst_device_get_display_name (device);
* g_print("Device added: %s\n", name);
* g_free (name);
+ * gst_object_unref (device);
* break;
* case GST_MESSAGE_DEVICE_REMOVED:
* gst_message_parse_device_removed (message, &device);
* name = gst_device_get_display_name (device);
* g_print("Device removed: %s\n", name);
* g_free (name);
+ * gst_object_unref (device);
* break;
* default:
* break;
GPtrArray *filters;
guint last_id;
+ GList *hidden;
+ gboolean show_all;
};
+#define DEFAULT_SHOW_ALL FALSE
+
+enum
+{
+ PROP_SHOW_ALL = 1,
+};
-G_DEFINE_TYPE (GstDeviceMonitor, gst_device_monitor, GST_TYPE_OBJECT);
+G_DEFINE_TYPE_WITH_PRIVATE (GstDeviceMonitor, gst_device_monitor,
+ GST_TYPE_OBJECT);
static void gst_device_monitor_dispose (GObject * object);
}
static void
+gst_device_monitor_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstDeviceMonitor *monitor = GST_DEVICE_MONITOR (object);
+
+ switch (prop_id) {
+ case PROP_SHOW_ALL:
+ g_value_set_boolean (value,
+ gst_device_monitor_get_show_all_devices (monitor));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_device_monitor_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstDeviceMonitor *monitor = GST_DEVICE_MONITOR (object);
+
+ switch (prop_id) {
+ case PROP_SHOW_ALL:
+ gst_device_monitor_set_show_all_devices (monitor,
+ g_value_get_boolean (value));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+
+static void
gst_device_monitor_class_init (GstDeviceMonitorClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
- g_type_class_add_private (klass, sizeof (GstDeviceMonitorPrivate));
-
+ object_class->get_property = gst_device_monitor_get_property;
+ object_class->set_property = gst_device_monitor_set_property;
object_class->dispose = gst_device_monitor_dispose;
+
+ g_object_class_install_property (object_class, PROP_SHOW_ALL,
+ g_param_spec_boolean ("show-all", "Show All",
+ "Show all devices, even those from hidden providers",
+ DEFAULT_SHOW_ALL, G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE));
+}
+
+/* must be called with monitor lock */
+static gboolean
+is_provider_hidden (GstDeviceMonitor * monitor, GList * hidden,
+ GstDeviceProvider * provider)
+{
+ GstDeviceProviderFactory *factory;
+
+ if (monitor->priv->show_all)
+ return FALSE;
+
+ factory = gst_device_provider_get_factory (provider);
+ if (g_list_find_custom (hidden, GST_OBJECT_NAME (factory),
+ (GCompareFunc) g_strcmp0))
+ return TRUE;
+
+ return FALSE;
+}
+
+/* must be called with monitor lock */
+static void
+update_hidden_providers_list (GList ** hidden, GstDeviceProvider * provider)
+{
+ gchar **obs;
+
+ obs = gst_device_provider_get_hidden_providers (provider);
+ if (obs) {
+ gint i;
+
+ for (i = 0; obs[i]; i++)
+ *hidden = g_list_prepend (*hidden, obs[i]);
+
+ g_free (obs);
+ }
}
static void
{
GstMessageType type = GST_MESSAGE_TYPE (message);
- if (type == GST_MESSAGE_DEVICE_ADDED || type == GST_MESSAGE_DEVICE_REMOVED) {
- gboolean matches;
+ if (type == GST_MESSAGE_DEVICE_ADDED || type == GST_MESSAGE_DEVICE_REMOVED ||
+ type == GST_MESSAGE_DEVICE_CHANGED) {
+ gboolean matches = TRUE;
GstDevice *device;
+ GstDeviceProvider *provider;
if (type == GST_MESSAGE_DEVICE_ADDED)
gst_message_parse_device_added (message, &device);
- else
+ else if (type == GST_MESSAGE_DEVICE_REMOVED)
gst_message_parse_device_removed (message, &device);
+ else
+ gst_message_parse_device_changed (message, &device, NULL);
GST_OBJECT_LOCK (monitor);
- if (monitor->priv->filters->len) {
+ provider =
+ GST_DEVICE_PROVIDER (gst_object_get_parent (GST_OBJECT (device)));
+ if (is_provider_hidden (monitor, monitor->priv->hidden, provider)) {
+ matches = FALSE;
+ } else {
guint i;
for (i = 0; i < monitor->priv->filters->len; i++) {
if (matches)
break;
}
- } else {
- matches = TRUE;
}
GST_OBJECT_UNLOCK (monitor);
+ gst_object_unref (provider);
gst_object_unref (device);
if (matches)
static void
gst_device_monitor_init (GstDeviceMonitor * self)
{
- self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
- GST_TYPE_DEVICE_MONITOR, GstDeviceMonitorPrivate);
+ self->priv = gst_device_monitor_get_instance_private (self);
+
+ self->priv->show_all = DEFAULT_SHOW_ALL;
self->priv->bus = gst_bus_new ();
gst_bus_set_flushing (self->priv->bus, TRUE);
GstDeviceProvider *provider = g_ptr_array_index (self->priv->providers, i);
GstBus *bus;
- g_ptr_array_remove_index_fast (self->priv->providers, i);
+ g_ptr_array_remove_index (self->priv->providers, i);
bus = gst_device_provider_get_bus (provider);
g_signal_handlers_disconnect_by_func (bus, bus_sync_message, self);
* Gets a list of devices from all of the relevant monitors. This may actually
* probe the hardware if the monitor is not currently started.
*
- * Returns: (transfer full) (element-type GstDevice): a #GList of
+ * Returns: (transfer full) (element-type GstDevice) (nullable): a #GList of
* #GstDevice
*
* Since: 1.4
GList *
gst_device_monitor_get_devices (GstDeviceMonitor * monitor)
{
- GList *devices = NULL;
+ GList *devices = NULL, *hidden = NULL;
guint i;
guint cookie;
if (monitor->priv->filters->len == 0) {
GST_OBJECT_UNLOCK (monitor);
GST_WARNING_OBJECT (monitor, "No filters have been set");
- return FALSE;
+ return NULL;
}
if (monitor->priv->providers->len == 0) {
GST_OBJECT_UNLOCK (monitor);
GST_WARNING_OBJECT (monitor, "No providers match the current filters");
- return FALSE;
+ return NULL;
}
again:
g_list_free_full (devices, gst_object_unref);
+ g_list_free_full (hidden, g_free);
devices = NULL;
+ hidden = NULL;
cookie = monitor->priv->cookie;
gst_object_ref (g_ptr_array_index (monitor->priv->providers, i));
GList *item;
- GST_OBJECT_UNLOCK (monitor);
+ if (!is_provider_hidden (monitor, hidden, provider)) {
+ GST_OBJECT_UNLOCK (monitor);
- tmpdev = gst_device_provider_get_devices (provider);
+ tmpdev = gst_device_provider_get_devices (provider);
+
+ GST_OBJECT_LOCK (monitor);
+ update_hidden_providers_list (&hidden, provider);
+ } else {
+ tmpdev = NULL;
+ }
- GST_OBJECT_LOCK (monitor);
for (item = tmpdev; item; item = item->next) {
GstDevice *dev = GST_DEVICE (item->data);
for (j = 0; j < monitor->priv->filters->len; j++) {
struct DeviceFilter *filter =
g_ptr_array_index (monitor->priv->filters, j);
+
if (gst_caps_can_intersect (filter->caps, caps) &&
gst_device_has_classesv (dev, filter->classesv)) {
devices = g_list_prepend (devices, gst_object_ref (dev));
g_list_free_full (tmpdev, gst_object_unref);
gst_object_unref (provider);
-
if (monitor->priv->cookie != cookie)
goto again;
}
+ g_list_free_full (hidden, g_free);
GST_OBJECT_UNLOCK (monitor);
- return devices;
+ return g_list_reverse (devices);
}
/**
gboolean
gst_device_monitor_start (GstDeviceMonitor * monitor)
{
- guint i;
+ guint cookie, i;
+ GList *pending = NULL, *started = NULL, *removed = NULL;
g_return_val_if_fail (GST_IS_DEVICE_MONITOR (monitor), FALSE);
gst_bus_set_flushing (monitor->priv->bus, FALSE);
+again:
+ cookie = monitor->priv->cookie;
+
+ g_list_free_full (pending, gst_object_unref);
+ pending = NULL;
+ removed = started;
+ started = NULL;
+
for (i = 0; i < monitor->priv->providers->len; i++) {
- GstDeviceProvider *provider =
- g_ptr_array_index (monitor->priv->providers, i);
+ GstDeviceProvider *provider;
+ GList *find;
+
+ provider = g_ptr_array_index (monitor->priv->providers, i);
+
+ find = g_list_find (removed, provider);
+ if (find) {
+ /* this was already started, move to started list */
+ removed = g_list_remove_link (removed, find);
+ started = g_list_concat (started, find);
+ } else {
+ /* not started, add to pending list */
+ pending = g_list_append (pending, gst_object_ref (provider));
+ }
+ }
+ g_list_free_full (removed, gst_object_unref);
+ removed = NULL;
+
+ while (pending) {
+ GstDeviceProvider *provider = pending->data;
if (gst_device_provider_can_monitor (provider)) {
- if (!gst_device_provider_start (provider)) {
- gst_bus_set_flushing (monitor->priv->bus, TRUE);
+ GST_OBJECT_UNLOCK (monitor);
- for (; i != 0; i--)
- gst_device_provider_stop (g_ptr_array_index (monitor->priv->providers,
- i - 1));
+ if (!gst_device_provider_start (provider))
+ goto start_failed;
- GST_OBJECT_UNLOCK (monitor);
- return FALSE;
- }
+ GST_OBJECT_LOCK (monitor);
}
- }
+ started = g_list_prepend (started, provider);
+ pending = g_list_delete_link (pending, pending);
+ if (monitor->priv->cookie != cookie)
+ goto again;
+ }
monitor->priv->started = TRUE;
GST_OBJECT_UNLOCK (monitor);
+ g_list_free_full (started, gst_object_unref);
+
return TRUE;
+
+start_failed:
+ {
+ GST_OBJECT_LOCK (monitor);
+ gst_bus_set_flushing (monitor->priv->bus, TRUE);
+ GST_OBJECT_UNLOCK (monitor);
+
+ while (started) {
+ GstDeviceProvider *provider = started->data;
+
+ gst_device_provider_stop (provider);
+ gst_object_unref (provider);
+
+ started = g_list_delete_link (started, started);
+ }
+ return FALSE;
+ }
}
/**
gst_device_monitor_stop (GstDeviceMonitor * monitor)
{
guint i;
+ GList *started = NULL;
g_return_if_fail (GST_IS_DEVICE_MONITOR (monitor));
GstDeviceProvider *provider =
g_ptr_array_index (monitor->priv->providers, i);
+ started = g_list_prepend (started, gst_object_ref (provider));
+ }
+ GST_OBJECT_UNLOCK (monitor);
+
+ while (started) {
+ GstDeviceProvider *provider = started->data;
+
if (gst_device_provider_can_monitor (provider))
gst_device_provider_stop (provider);
+
+ started = g_list_delete_link (started, started);
+ gst_object_unref (provider);
}
+
+ GST_OBJECT_LOCK (monitor);
monitor->priv->started = FALSE;
GST_OBJECT_UNLOCK (monitor);
}
+static void
+provider_hidden (GstDeviceProvider * provider, const gchar * hidden,
+ GstDeviceMonitor * monitor)
+{
+ GST_OBJECT_LOCK (monitor);
+ monitor->priv->hidden =
+ g_list_prepend (monitor->priv->hidden, g_strdup (hidden));
+ GST_OBJECT_UNLOCK (monitor);
+}
+
+static void
+provider_unhidden (GstDeviceProvider * provider, const gchar * hidden,
+ GstDeviceMonitor * monitor)
+{
+ GList *find;
+
+ GST_OBJECT_LOCK (monitor);
+ find =
+ g_list_find_custom (monitor->priv->hidden, hidden,
+ (GCompareFunc) g_strcmp0);
+ if (find) {
+ g_free (find->data);
+ monitor->priv->hidden = g_list_delete_link (monitor->priv->hidden, find);
+ }
+ GST_OBJECT_UNLOCK (monitor);
+}
+
/**
* gst_device_monitor_add_filter:
* @monitor: a device monitor
* @caps: (allow-none): the #GstCaps to filter or %NULL for ANY
*
* Adds a filter for which #GstDevice will be monitored, any device that matches
- * all classes and the #GstCaps will be returned.
+ * all these classes and the #GstCaps will be returned.
+ *
+ * If this function is called multiple times to add more filters, each will be
+ * matched independently. That is, adding more filters will not further restrict
+ * what devices are matched.
+ *
+ * The #GstCaps supported by the device as returned by gst_device_get_caps() are
+ * not intersected with caps filters added using this function.
*
* Filters must be added before the #GstDeviceMonitor is started.
*
- * Returns: The id of the new filter or %0 if no provider matched the filter's
+ * Returns: The id of the new filter or 0 if no provider matched the filter's
* classes.
*
* Since: 1.4
while (factories) {
GstDeviceProviderFactory *factory = factories->data;
-
if (gst_device_provider_factory_has_classesv (factory, filter->classesv)) {
GstDeviceProvider *provider;
if (provider) {
GstBus *bus = gst_device_provider_get_bus (provider);
+ update_hidden_providers_list (&monitor->priv->hidden, provider);
+ g_signal_connect (provider, "provider-hidden",
+ (GCallback) provider_hidden, monitor);
+ g_signal_connect (provider, "provider-unhidden",
+ (GCallback) provider_unhidden, monitor);
+
matched = TRUE;
gst_bus_enable_sync_message_emission (bus);
g_signal_connect (bus, "sync-message",
/* Ensure there is no leak here */
g_assert (factories == NULL);
- if (matched) {
+ if (matched)
id = filter->id;
- g_ptr_array_add (monitor->priv->filters, filter);
- } else {
- device_filter_free (filter);
- }
+ g_ptr_array_add (monitor->priv->filters, filter);
GST_OBJECT_UNLOCK (monitor);
GstDeviceMonitor *
gst_device_monitor_new (void)
{
- return g_object_new (GST_TYPE_DEVICE_MONITOR, NULL);
+ GstDeviceMonitor *monitor;
+
+ monitor = g_object_new (GST_TYPE_DEVICE_MONITOR, NULL);
+
+ /* Clear floating flag */
+ gst_object_ref_sink (monitor);
+
+ return monitor;
}
/**
return gst_object_ref (monitor->priv->bus);
}
+
+/**
+ * gst_device_monitor_get_providers:
+ * @monitor: a #GstDeviceMonitor
+ *
+ * Get a list of the currently selected device provider factories.
+ *
+ * This
+ *
+ * Returns: (transfer full) (array zero-terminated=1) (element-type gchar*):
+ * A list of device provider factory names that are currently being
+ * monitored by @monitor or %NULL when nothing is being monitored.
+ *
+ * Since: 1.6
+ */
+gchar **
+gst_device_monitor_get_providers (GstDeviceMonitor * monitor)
+{
+ guint i, len;
+ gchar **res = NULL;
+
+ g_return_val_if_fail (GST_IS_DEVICE_MONITOR (monitor), NULL);
+
+ GST_OBJECT_LOCK (monitor);
+ len = monitor->priv->providers->len;
+ if (len == 0)
+ goto done;
+
+ res = g_new (gchar *, len + 1);
+
+ for (i = 0; i < len; i++) {
+ GstDeviceProvider *provider =
+ g_ptr_array_index (monitor->priv->providers, i);
+ GstDeviceProviderFactory *factory =
+ gst_device_provider_get_factory (provider);
+
+ res[i] = g_strdup (GST_OBJECT_NAME (factory));
+ }
+ res[i] = NULL;
+
+done:
+ GST_OBJECT_UNLOCK (monitor);
+
+ return res;
+}
+
+/**
+ * gst_device_monitor_set_show_all_devices:
+ * @monitor: a #GstDeviceMonitor
+ * @show_all: show all devices
+ *
+ * Set if all devices should be visible, even those devices from hidden
+ * providers. Setting @show_all to true might show some devices multiple times.
+ *
+ * Since: 1.6
+ */
+void
+gst_device_monitor_set_show_all_devices (GstDeviceMonitor * monitor,
+ gboolean show_all)
+{
+ g_return_if_fail (GST_IS_DEVICE_MONITOR (monitor));
+
+ GST_OBJECT_LOCK (monitor);
+ monitor->priv->show_all = show_all;
+ GST_OBJECT_UNLOCK (monitor);
+}
+
+/**
+ * gst_device_monitor_get_show_all_devices:
+ * @monitor: a #GstDeviceMonitor
+ *
+ * Get if @monitor is curretly showing all devices, even those from hidden
+ * providers.
+ *
+ * Returns: %TRUE when all devices will be shown.
+ *
+ * Since: 1.6
+ */
+gboolean
+gst_device_monitor_get_show_all_devices (GstDeviceMonitor * monitor)
+{
+ gboolean res;
+
+ g_return_val_if_fail (GST_IS_DEVICE_MONITOR (monitor), FALSE);
+
+ GST_OBJECT_LOCK (monitor);
+ res = monitor->priv->show_all;
+ GST_OBJECT_UNLOCK (monitor);
+
+ return res;
+}
projects / platform / upstream / gstreamer.git / blobdiff