jack: Add property port-pattern to specify which JACK ports to connect to

https://bugzilla.gnome.org/show_bug.cgi?id=690719

ext/jack/gstjackaudiosink.c

@@ -458,8 +458,13 @@ gst_jack_ring_buffer_acquire (GstAudioRingBuffer * buf,
     /* find all the physical input ports. A physical input port is a port
      * associated with a hardware device. Someone needs connect to a physical
      * port in order to hear something. */
+    if (sink->port_pattern == NULL) {
       ports = jack_get_ports (client, NULL, NULL,
           JackPortIsPhysical | JackPortIsInput);
+    } else {
+      ports = jack_get_ports (client, sink->port_pattern, NULL,
+          JackPortIsInput);
+    }
     if (ports == NULL) {
       /* no ports? fine then we don't do anything except for posting a warning
        * message. */
@@ -675,6 +680,7 @@ enum
 #define DEFAULT_PROP_CONNECT 		GST_JACK_CONNECT_AUTO
 #define DEFAULT_PROP_SERVER 		NULL
 #define DEFAULT_PROP_CLIENT_NAME	NULL
+#define DEFAULT_PROP_PORT_PATTERN      	NULL
 #define DEFAULT_PROP_TRANSPORT	GST_JACK_TRANSPORT_AUTONOMOUS
 
 enum
@@ -684,6 +690,7 @@ enum
   PROP_SERVER,
   PROP_CLIENT,
   PROP_CLIENT_NAME,
+  PROP_PORT_PATTERN,
   PROP_TRANSPORT,
   PROP_LAST
 };
@@ -750,6 +757,19 @@ gst_jack_audio_sink_class_init (GstJackAudioSinkClass * klass)
           GST_PARAM_MUTABLE_READY | G_PARAM_READWRITE |
           G_PARAM_STATIC_STRINGS));
 
+   /**
+   * GstJackAudioSink:port-pattern
+   *
+   * autoconnect to ports matching pattern, when NULL connect to physical ports
+   *
+   * Since: 1.6
+   */
+  g_object_class_install_property (gobject_class, PROP_PORT_PATTERN,
+      g_param_spec_string ("port-pattern", "port pattern",
+          "A pattern to select which ports to connect to (NULL = first physical ports)",
+          DEFAULT_PROP_PORT_PATTERN,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
   /**
    * GstJackAudioSink:transport:
    *
@@ -805,6 +825,11 @@ gst_jack_audio_sink_dispose (GObject * object)
     sink->client_name = NULL;
   }
 
+  if (sink->port_pattern != NULL) {
+    g_free (sink->port_pattern);
+    sink->port_pattern = NULL;
+  }
+
   G_OBJECT_CLASS (parent_class)->dispose (object);
 }
 
@@ -821,6 +846,10 @@ gst_jack_audio_sink_set_property (GObject * object, guint prop_id,
       g_free (sink->client_name);
       sink->client_name = g_value_dup_string (value);
       break;
+    case PROP_PORT_PATTERN:
+      g_free (sink->port_pattern);
+      sink->port_pattern = g_value_dup_string (value);
+      break;
     case PROP_CONNECT:
       sink->connect = g_value_get_enum (value);
       break;
@@ -855,6 +884,9 @@ gst_jack_audio_sink_get_property (GObject * object, guint prop_id,
     case PROP_CLIENT_NAME:
       g_value_set_string (value, sink->client_name);
       break;
+    case PROP_PORT_PATTERN:
+      g_value_set_string (value, sink->port_pattern);
+      break;
     case PROP_CONNECT:
       g_value_set_enum (value, sink->connect);
       break;

ext/jack/gstjackaudiosink.h

@@ -59,6 +59,7 @@ struct _GstJackAudioSink {
   gchar           *server;
   jack_client_t   *jclient;
   gchar           *client_name;
+  gchar           *port_pattern;
   guint            transport;
 
   /* our client */

ext/jack/gstjackaudiosrc.c

@@ -469,9 +469,15 @@ gst_jack_ring_buffer_acquire (GstAudioRingBuffer * buf,
     /* find all the physical output ports. A physical output port is a port
      * associated with a hardware device. Someone needs connect to a physical
      * port in order to capture something. */
-    ports =
+
-        jack_get_ports (client, NULL, NULL,
+    if (src->port_pattern == NULL) {
+      ports = jack_get_ports (client, NULL, NULL,
           JackPortIsPhysical | JackPortIsOutput);
+    } else {
+      ports = jack_get_ports (client, src->port_pattern, NULL,
+          JackPortIsOutput);
+    }
+
     if (ports == NULL) {
       /* no ports? fine then we don't do anything except for posting a warning
        * message. */
@@ -680,7 +686,7 @@ enum
 #define DEFAULT_PROP_SERVER 		NULL
 #define DEFAULT_PROP_CLIENT_NAME	NULL
 #define DEFAULT_PROP_TRANSPORT	GST_JACK_TRANSPORT_AUTONOMOUS
-
+#define DEFAULT_PROP_PORT_PATTERN     	NULL
 enum
 {
   PROP_0,
@@ -688,11 +694,11 @@ enum
   PROP_SERVER,
   PROP_CLIENT,
   PROP_CLIENT_NAME,
+  PROP_PORT_PATTERN,
   PROP_TRANSPORT,
   PROP_LAST
 };
 
-
 /* the capabilities of the inputs and outputs.
  *
  * describe the real formats here.
@@ -771,6 +777,18 @@ gst_jack_audio_src_class_init (GstJackAudioSrcClass * klass)
           GST_TYPE_JACK_CLIENT,
           GST_PARAM_MUTABLE_READY | G_PARAM_READWRITE |
           G_PARAM_STATIC_STRINGS));
+   /**
+    * GstJackAudioSrc:port-pattern
+    *
+    * autoconnect to ports matching pattern, when NULL connect to physical ports
+    *
+    * Since: 1.6
+    */
+  g_object_class_install_property (gobject_class, PROP_PORT_PATTERN,
+      g_param_spec_string ("port-pattern", "port pattern",
+          "A pattern to select which ports to connect to (NULL = first physical ports)",
+          DEFAULT_PROP_PORT_PATTERN,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 
   /**
    * GstJackAudioSink:transport:
@@ -828,6 +846,11 @@ gst_jack_audio_src_dispose (GObject * object)
     src->client_name = NULL;
   }
 
+  if (src->port_pattern != NULL) {
+    g_free (src->port_pattern);
+    src->port_pattern = NULL;
+  }
+
   G_OBJECT_CLASS (parent_class)->dispose (object);
 }
 
@@ -842,6 +865,10 @@ gst_jack_audio_src_set_property (GObject * object, guint prop_id,
       g_free (src->client_name);
       src->client_name = g_value_dup_string (value);
       break;
+    case PROP_PORT_PATTERN:
+      g_free (src->port_pattern);
+      src->port_pattern = g_value_dup_string (value);
+      break;
     case PROP_CONNECT:
       src->connect = g_value_get_enum (value);
       break;
@@ -874,6 +901,8 @@ gst_jack_audio_src_get_property (GObject * object, guint prop_id,
     case PROP_CLIENT_NAME:
       g_value_set_string (value, src->client_name);
       break;
+    case PROP_PORT_PATTERN:
+      g_value_set_string (value, src->port_pattern);
     case PROP_CONNECT:
       g_value_set_enum (value, src->connect);
       break;

ext/jack/gstjackaudiosrc.h

@@ -76,6 +76,7 @@ struct _GstJackAudioSrc
     gchar           *server;
     jack_client_t   *jclient;
     gchar           *client_name;
+    gchar           *port_pattern;
     guint            transport;
 
     /* our client */