Changeset 2073:9032ae5f36c7 in roaraudio for plugins/gstreamer0.10/roarmixer.c

Timestamp:

07/19/09 04:01:35 (15 years ago)

Author:

phi

Branch:

default

Phase:

public

Message:

copyed a lot code from the oss mixer

File:

• plugins/gstreamer0.10/roarmixer.c (modified) (1 diff)

plugins/gstreamer0.10/roarmixer.c

@@ -27 +27 @@
 #include "roarmixer.h"
 
+GST_DEBUG_CATEGORY_EXTERN (roar_debug);
+#define GST_CAT_DEFAULT roar_debug
+
+enum
+{
+  PROP_DEVICE_NAME = 1
+};
+
+
+static const GstElementDetails gst_roar_mixer_element_details =
+GST_ELEMENT_DETAILS ("RoarAudio Mixer",
+    "Generic/Audio",
+    "Control sound input and output levels with RoarAudio",
+    "Philipp 'ph3-der-loewe' Schafft <lion@lion.leolix.org>");
+
+GST_BOILERPLATE_WITH_INTERFACE (GstRoarMixerElement, gst_roar_mixer_element,
+    GstElement, GST_TYPE_ELEMENT, GstMixer, GST_TYPE_MIXER,
+    gst_roar_mixer_element);
+
+GST_IMPLEMENT_ROAR_MIXER_METHODS (GstRoarMixerElement, gst_roar_mixer_element);
+
+static GstStateChangeReturn gst_roar_mixer_element_change_state (GstElement *
+    element, GstStateChange transition);
+
+static void gst_roar_mixer_element_get_property (GObject * object,
+    guint prop_id, GValue * value, GParamSpec * pspec);
+
+static void
+gst_roar_mixer_element_base_init (gpointer klass)
+{
+  gst_element_class_set_details (GST_ELEMENT_CLASS (klass),
+      &gst_roar_mixer_element_details);
+}
+
+static void
+gst_roar_mixer_element_class_init (GstRoarMixerElementClass * klass)
+{
+  GstElementClass *element_class;
+  GObjectClass *gobject_class;
+
+  element_class = (GstElementClass *) klass;
+  gobject_class = (GObjectClass *) klass;
+
+  gobject_class->get_property = gst_roar_mixer_element_get_property;
+
+  g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
+      g_param_spec_string ("device-name", "Device name",
+          "Human-readable name of the sound device", "", G_PARAM_READABLE));
+
+  element_class->change_state =
+      GST_DEBUG_FUNCPTR (gst_roar_mixer_element_change_state);
+}
+
+static void
+gst_roar_mixer_element_init (GstRoarMixerElement * this,
+    GstRoarMixerElementClass * g_class)
+{
+  this->mixer = NULL;
+}
+
+static void
+gst_roar_mixer_element_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstRoarMixerElement *this = GST_ROAR_MIXER_ELEMENT (object);
+
+  switch (prop_id) {
+    case PROP_DEVICE_NAME:
+      if (this->mixer) {
+        g_value_set_string (value, this->mixer->cardname);
+      } else {
+        g_value_set_string (value, NULL);
+      }
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static GstStateChangeReturn
+gst_roar_mixer_element_change_state (GstElement * element,
+    GstStateChange transition)
+{
+  GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
+  GstRoarMixerElement *this = GST_ROAR_MIXER_ELEMENT (element);
+
+  switch (transition) {
+    case GST_STATE_CHANGE_NULL_TO_READY:
+      if (!this->mixer) {
+        this->mixer = gst_roarmixer_new ("/dev/mixer", GST_ROAR_MIXER_ALL);
+      }
+      break;
+      break;
+    default:
+      break;
+  }
+
+  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+  if (ret == GST_STATE_CHANGE_FAILURE)
+    return ret;
+
+  switch (transition) {
+    case GST_STATE_CHANGE_READY_TO_NULL:
+      if (this->mixer) {
+        gst_roarmixer_free (this->mixer);
+        this->mixer = NULL;
+      }
+      break;
+    default:
+      break;
+  }
+
+  return ret;
+}
+
+
+gboolean gst_roarmixer_factory_init (GstPlugin * plugin) {
+  if (!gst_element_register(plugin, "roarmixer", GST_RANK_MARGINAL,
+                            GST_TYPE_ROARMIXER))
+    return FALSE;
+
+  return TRUE;
+}
+
 GstRoarMixer*    gst_roarmixer_new                (const gchar *device,
                                                  GstRoarMixerDirection dir) {