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GnomeVolumeControl: track PulseAudio connection state and expose it

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Adds get_state() and ::state-changed signals, that replace connecting
and ready, as well as providing indication of when the object was closed
or the connection to PulseAudio failed.

https://bugzilla.gnome.org/show_bug.cgi?id=645708
This commit is contained in:
Giovanni Campagna 2011-03-26 17:59:22 +01:00
parent 8f4a4d93f2
commit 270e82e3db
2 changed files with 34 additions and 24 deletions
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43
src/gvc/gvc-mixer-control.c
View File

@ -81,11 +81,12 @@ struct GvcMixerControlPrivate
GHashTable *cards;
GvcMixerStream *new_default_stream; /* new default stream, used in gvc_mixer_control_set_default_sink () */
GvcMixerControlState state;
};
enum {
CONNECTING,
READY,
STATE_CHANGED,
STREAM_ADDED,
STREAM_REMOVED,
CARD_ADDED,
@ -508,16 +509,17 @@ dec_outstanding (GvcMixerControl *control)
}
if (--control->priv->n_outstanding <= 0) {
g_signal_emit (G_OBJECT (control), signals[READY], 0);
control->priv->state = GVC_STATE_READY;
g_signal_emit (G_OBJECT (control), signals[STATE_CHANGED], 0, GVC_STATE_READY);
}
}
gboolean
gvc_mixer_control_is_ready (GvcMixerControl *control)
GvcMixerControlState
gvc_mixer_control_get_state (GvcMixerControl *control)
{
g_return_val_if_fail (GVC_IS_MIXER_CONTROL (control), FALSE);
return (control->priv->n_outstanding == 0);
return control->priv->state;
}
@ -1943,7 +1945,8 @@ _pa_context_state_cb (pa_context *context,
break;
case PA_CONTEXT_FAILED:
g_warning ("Connection failed, reconnecting...");
control->priv->state = GVC_STATE_FAILED;
g_signal_emit (control, signals[STATE_CHANGED], 0, GVC_STATE_FAILED);
if (control->priv->reconnect_id == 0)
control->priv->reconnect_id = g_timeout_add_seconds (RECONNECT_DELAY, idle_reconnect, control);
break;
@ -1968,7 +1971,8 @@ gvc_mixer_control_open (GvcMixerControl *control)
_pa_context_state_cb,
control);
g_signal_emit (G_OBJECT (control), signals[CONNECTING], 0);
control->priv->state = GVC_STATE_CONNECTING;
g_signal_emit (G_OBJECT (control), signals[STATE_CHANGED], 0, GVC_STATE_CONNECTING);
res = pa_context_connect (control->priv->pa_context, NULL, (pa_context_flags_t) PA_CONTEXT_NOFAIL, NULL);
if (res < 0) {
g_warning ("Failed to connect context: %s",
@ -1985,6 +1989,9 @@ gvc_mixer_control_close (GvcMixerControl *control)
g_return_val_if_fail (control->priv->pa_context != NULL, FALSE);
pa_context_disconnect (control->priv->pa_context);
control->priv->state = GVC_STATE_CLOSED;
g_signal_emit (G_OBJECT (control), signals[STATE_CHANGED], 0, GVC_STATE_CLOSED);
return TRUE;
}
@ -2125,22 +2132,14 @@ gvc_mixer_control_class_init (GvcMixerControlClass *klass)
NULL,
G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
signals [CONNECTING] =
g_signal_new ("connecting",
signals [STATE_CHANGED] =
g_signal_new ("state-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GvcMixerControlClass, connecting),
G_STRUCT_OFFSET (GvcMixerControlClass, state_changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
signals [READY] =
g_signal_new ("ready",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GvcMixerControlClass, ready),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
g_cclosure_marshal_VOID__UINT,
G_TYPE_NONE, 1, G_TYPE_UINT);
signals [STREAM_ADDED] =
g_signal_new ("stream-added",
G_TYPE_FROM_CLASS (klass),
@ -2212,6 +2211,8 @@ gvc_mixer_control_init (GvcMixerControl *control)
control->priv->cards = g_hash_table_new_full (NULL, NULL, NULL, (GDestroyNotify)g_object_unref);
control->priv->clients = g_hash_table_new_full (NULL, NULL, NULL, (GDestroyNotify)g_free);
control->priv->state = GVC_STATE_CLOSED;
}
static void

15
src/gvc/gvc-mixer-control.h
View File

@ -27,6 +27,14 @@
G_BEGIN_DECLS
typedef enum
{
GVC_STATE_CLOSED,
GVC_STATE_READY,
GVC_STATE_CONNECTING,
GVC_STATE_FAILED
} GvcMixerControlState;
#define GVC_TYPE_MIXER_CONTROL (gvc_mixer_control_get_type ())
#define GVC_MIXER_CONTROL(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GVC_TYPE_MIXER_CONTROL, GvcMixerControl))
#define GVC_MIXER_CONTROL_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), GVC_TYPE_MIXER_CONTROL, GvcMixerControlClass))
@ -46,8 +54,8 @@ typedef struct
{
GObjectClass parent_class;
void (*connecting) (GvcMixerControl *control);
void (*ready) (GvcMixerControl *control);
void (*state_changed) (GvcMixerControl *control,
GvcMixerControlState new_state);
void (*stream_added) (GvcMixerControl *control,
guint id);
void (*stream_removed) (GvcMixerControl *control,
@ -68,7 +76,6 @@ GvcMixerControl * gvc_mixer_control_new (const char *name);
gboolean gvc_mixer_control_open (GvcMixerControl *control);
gboolean gvc_mixer_control_close (GvcMixerControl *control);
gboolean gvc_mixer_control_is_ready (GvcMixerControl *control);
GSList * gvc_mixer_control_get_cards (GvcMixerControl *control);
GSList * gvc_mixer_control_get_streams (GvcMixerControl *control);
@ -94,6 +101,8 @@ gboolean gvc_mixer_control_set_default_source (GvcMixerControl *con
gdouble gvc_mixer_control_get_vol_max_norm (GvcMixerControl *control);
gdouble gvc_mixer_control_get_vol_max_amplified (GvcMixerControl *control);
GvcMixerControlState gvc_mixer_control_get_state (GvcMixerControl *control);
G_END_DECLS
#endif /* __GVC_MIXER_CONTROL_H */