--- a/gst_plugins_good/gst/autodetect/gstautoaudiosrc.c	Fri Jul 09 16:26:45 2010 -0500
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,453 +0,0 @@
-/* GStreamer
- * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
- * (c) 2006 Jan Schmidt <thaytan@noraisin.net>
- * (c) 2008 Stefan Kost <ensonic@users.sf.net>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-/**
- * SECTION:element-autoaudiosrc
- * @see_also: autovideosrc, alsasrc, osssrc
- *
- * autoaudiosrc is an audio source that automatically detects an appropriate
- * audio source to use.  It does so by scanning the registry for all elements
- * that have <quote>Source</quote> and <quote>Audio</quote> in the class field
- * of their element information, and also have a non-zero autoplugging rank.
- *
- * <refsect2>
- * <title>Example launch line</title>
- * |[
- * gst-launch -v -m autoaudiosrc ! audioconvert ! audioresample ! autoaudiosink
- * ]|
- * </refsect2>
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <string.h>
-
-#include "gstautoaudiosrc.h"
-#include "gstautodetect.h"
-
-/* Properties */
-enum
-{
-  PROP_0,
-  PROP_CAPS,
-};
-
-static GstStateChangeReturn
-gst_auto_audio_src_change_state (GstElement * element,
-    GstStateChange transition);
-static void gst_auto_audio_src_dispose (GstAutoAudioSrc * src);
-static void gst_auto_audio_src_clear_kid (GstAutoAudioSrc * src);
-static void gst_auto_audio_src_set_property (GObject * object, guint prop_id,
-    const GValue * value, GParamSpec * pspec);
-static void gst_auto_audio_src_get_property (GObject * object, guint prop_id,
-    GValue * value, GParamSpec * pspec);
-
-GST_BOILERPLATE (GstAutoAudioSrc, gst_auto_audio_src, GstBin, GST_TYPE_BIN);
-
-static const GstElementDetails gst_auto_audio_src_details =
-GST_ELEMENT_DETAILS ("Auto audio source",
-    "Source/Audio",
-    "Wrapper audio source for automatically detected audio source",
-    "Ronald Bultje <rbultje@ronald.bitfreak.net>\n"
-    "Jan Schmidt <thaytan@noraisin.net>\n"
-    "Stefan Kost <ensonic@users.sf.net>");
-
-static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
-    GST_PAD_SRC,
-    GST_PAD_ALWAYS,
-    GST_STATIC_CAPS_ANY);
-
-static void
-gst_auto_audio_src_base_init (gpointer klass)
-{
-  GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
-
-  gst_element_class_add_pad_template (eklass,
-      gst_static_pad_template_get (&src_template));
-
-  gst_element_class_set_details (eklass, &gst_auto_audio_src_details);
-}
-
-static void
-gst_auto_audio_src_class_init (GstAutoAudioSrcClass * klass)
-{
-  GObjectClass *gobject_class;
-  GstElementClass *eklass;
-
-  gobject_class = G_OBJECT_CLASS (klass);
-  eklass = GST_ELEMENT_CLASS (klass);
-
-  gobject_class->dispose =
-      (GObjectFinalizeFunc) GST_DEBUG_FUNCPTR (gst_auto_audio_src_dispose);
-  eklass->change_state = GST_DEBUG_FUNCPTR (gst_auto_audio_src_change_state);
-  gobject_class->set_property =
-      GST_DEBUG_FUNCPTR (gst_auto_audio_src_set_property);
-  gobject_class->get_property =
-      GST_DEBUG_FUNCPTR (gst_auto_audio_src_get_property);
-
-  /**
-   * GstAutoAudioSrc:filter-caps
-   *
-   * This property will filter out candidate sinks that can handle the specified
-   * caps. By default only audio sinks that support raw floating point and
-   * integer audio are selected.
-   *
-   * This property can only be set before the element goes to the READY state.
-   *
-   * Since: 0.10.14
-   **/
-  g_object_class_install_property (gobject_class, PROP_CAPS,
-      g_param_spec_boxed ("filter-caps", "Filter caps",
-          "Filter sink candidates using these caps.", GST_TYPE_CAPS,
-          G_PARAM_READWRITE));
-}
-
-static void
-gst_auto_audio_src_dispose (GstAutoAudioSrc * sink)
-{
-  gst_auto_audio_src_clear_kid (sink);
-
-  if (sink->filter_caps)
-    gst_caps_unref (sink->filter_caps);
-  sink->filter_caps = NULL;
-
-  G_OBJECT_CLASS (parent_class)->dispose ((GObject *) sink);
-}
-
-static void
-gst_auto_audio_src_clear_kid (GstAutoAudioSrc * sink)
-{
-  if (sink->kid) {
-    gst_element_set_state (sink->kid, GST_STATE_NULL);
-    gst_bin_remove (GST_BIN (sink), sink->kid);
-    sink->kid = NULL;
-  }
-}
-
-/*
- * Hack to make initial linking work; ideally, this'd work even when
- * no target has been assigned to the ghostpad yet.
- */
-static void
-gst_auto_audio_src_reset (GstAutoAudioSrc * src)
-{
-  GstPad *targetpad;
-
-  gst_auto_audio_src_clear_kid (src);
-
-  /* fakesink placeholder */
-  src->kid = gst_element_factory_make ("fakesrc", "tempsrc");
-  gst_bin_add (GST_BIN (src), src->kid);
-
-  /* pad */
-  targetpad = gst_element_get_static_pad (src->kid, "src");
-  gst_ghost_pad_set_target (GST_GHOST_PAD (src->pad), targetpad);
-  gst_object_unref (targetpad);
-}
-
-static GstStaticCaps raw_caps =
-    GST_STATIC_CAPS ("audio/x-raw-int; audio/x-raw-float");
-
-static void
-gst_auto_audio_src_init (GstAutoAudioSrc * src, GstAutoAudioSrcClass * g_class)
-{
-  src->pad = gst_ghost_pad_new_no_target ("src", GST_PAD_SRC);
-  gst_element_add_pad (GST_ELEMENT (src), src->pad);
-
-  gst_auto_audio_src_reset (src);
-
-  /* set the default raw audio caps */
-  src->filter_caps = gst_static_caps_get (&raw_caps);
-
-  /* mark as source */
-  GST_OBJECT_FLAG_UNSET (src, GST_ELEMENT_IS_SINK);
-}
-
-static gboolean
-gst_auto_audio_src_factory_filter (GstPluginFeature * feature, gpointer data)
-{
-  guint rank;
-  const gchar *klass;
-
-  /* we only care about element factories */
-  if (!GST_IS_ELEMENT_FACTORY (feature))
-    return FALSE;
-
-  /* audio sinks */
-  klass = gst_element_factory_get_klass (GST_ELEMENT_FACTORY (feature));
-  if (!(strstr (klass, "Source") && strstr (klass, "Audio")))
-    return FALSE;
-
-  /* only select elements with autoplugging rank */
-  rank = gst_plugin_feature_get_rank (feature);
-  if (rank < GST_RANK_MARGINAL)
-    return FALSE;
-
-  return TRUE;
-}
-
-static gint
-gst_auto_audio_src_compare_ranks (GstPluginFeature * f1, GstPluginFeature * f2)
-{
-  gint diff;
-
-  diff = gst_plugin_feature_get_rank (f2) - gst_plugin_feature_get_rank (f1);
-  if (diff != 0)
-    return diff;
-  return strcmp (gst_plugin_feature_get_name (f2),
-      gst_plugin_feature_get_name (f1));
-}
-
-static GstElement *
-gst_auto_audio_src_create_element_with_pretty_name (GstAutoAudioSrc * src,
-    GstElementFactory * factory)
-{
-  GstElement *element;
-  gchar *name, *marker;
-
-  marker = g_strdup (GST_PLUGIN_FEATURE (factory)->name);
-  if (g_str_has_suffix (marker, "src"))
-    marker[strlen (marker) - 4] = '\0';
-  if (g_str_has_prefix (marker, "gst"))
-    g_memmove (marker, marker + 3, strlen (marker + 3) + 1);
-  name = g_strdup_printf ("%s-actual-src-%s", GST_OBJECT_NAME (src), marker);
-  g_free (marker);
-
-  element = gst_element_factory_create (factory, name);
-  g_free (name);
-
-  return element;
-}
-
-static GstElement *
-gst_auto_audio_src_find_best (GstAutoAudioSrc * src)
-{
-  GList *list, *item;
-  GstElement *choice = NULL;
-  GstMessage *message = NULL;
-  GSList *errors = NULL;
-  GstBus *bus = gst_bus_new ();
-  GstPad *el_pad = NULL;
-  GstCaps *el_caps = NULL, *intersect = NULL;
-  gboolean no_match = TRUE;
-
-  list = gst_registry_feature_filter (gst_registry_get_default (),
-      (GstPluginFeatureFilter) gst_auto_audio_src_factory_filter, FALSE, src);
-  list = g_list_sort (list, (GCompareFunc) gst_auto_audio_src_compare_ranks);
-
-  /* We don't treat sound server sources special. Our policy is that sound
-   * server sources that have a rank must not auto-spawn a daemon under any
-   * circumstances, so there's nothing for us to worry about here */
-  GST_LOG_OBJECT (src, "Trying to find usable audio devices ...");
-
-  for (item = list; item != NULL; item = item->next) {
-    GstElementFactory *f = GST_ELEMENT_FACTORY (item->data);
-    GstElement *el;
-
-    if ((el = gst_auto_audio_src_create_element_with_pretty_name (src, f))) {
-      GstStateChangeReturn ret;
-
-      GST_DEBUG_OBJECT (src, "Testing %s", GST_PLUGIN_FEATURE (f)->name);
-
-      /* If autoAudioSrc has been provided with filter caps,
-       * accept only sources that match with the filter caps */
-      if (src->filter_caps) {
-        el_pad = gst_element_get_static_pad (GST_ELEMENT (el), "src");
-        el_caps = gst_pad_get_caps (el_pad);
-        gst_object_unref (el_pad);
-        GST_DEBUG_OBJECT (src,
-            "Checking caps: %" GST_PTR_FORMAT " vs. %" GST_PTR_FORMAT,
-            src->filter_caps, el_caps);
-        intersect = gst_caps_intersect (src->filter_caps, el_caps);
-        no_match = gst_caps_is_empty (intersect);
-        gst_caps_unref (el_caps);
-        gst_caps_unref (intersect);
-
-        if (no_match) {
-          GST_DEBUG_OBJECT (src, "Incompatible caps");
-          gst_object_unref (el);
-          continue;
-        } else {
-          GST_DEBUG_OBJECT (src, "Found compatible caps");
-        }
-      }
-
-      gst_element_set_bus (el, bus);
-      ret = gst_element_set_state (el, GST_STATE_READY);
-      if (ret == GST_STATE_CHANGE_SUCCESS) {
-        GST_DEBUG_OBJECT (src, "This worked!");
-        choice = el;
-        break;
-      }
-
-      /* collect all error messages */
-      while ((message = gst_bus_pop_filtered (bus, GST_MESSAGE_ERROR))) {
-        GST_DEBUG_OBJECT (src, "error message %" GST_PTR_FORMAT, message);
-        errors = g_slist_append (errors, message);
-      }
-
-      gst_element_set_state (el, GST_STATE_NULL);
-      gst_object_unref (el);
-    }
-  }
-
-  GST_DEBUG_OBJECT (src, "done trying");
-  if (!choice) {
-    if (errors) {
-      /* FIXME: we forward the first error for now; but later on it might make
-       * sense to actually analyse them */
-      gst_message_ref (GST_MESSAGE (errors->data));
-      GST_DEBUG_OBJECT (src, "reposting message %p", errors->data);
-      gst_element_post_message (GST_ELEMENT (src), GST_MESSAGE (errors->data));
-    } else {
-      /* send warning message to application and use a fakesrc */
-      GST_ELEMENT_WARNING (src, RESOURCE, NOT_FOUND, (NULL),
-          ("Failed to find a usable audio source"));
-      choice = gst_element_factory_make ("fakesrc", "fake-audio-src");
-      if (g_object_class_find_property (G_OBJECT_GET_CLASS (choice), "sync"))
-        g_object_set (choice, "sync", TRUE, NULL);
-      gst_element_set_state (choice, GST_STATE_READY);
-    }
-  }
-  gst_object_unref (bus);
-  gst_plugin_feature_list_free (list);
-  g_slist_foreach (errors, (GFunc) gst_mini_object_unref, NULL);
-  g_slist_free (errors);
-
-  return choice;
-}
-
-static gboolean
-gst_auto_audio_src_detect (GstAutoAudioSrc * src)
-{
-  GstElement *esrc;
-  GstPad *targetpad;
-
-  gst_auto_audio_src_clear_kid (src);
-
-  /* find element */
-  GST_DEBUG_OBJECT (src, "Creating new kid");
-  if (!(esrc = gst_auto_audio_src_find_best (src)))
-    goto no_src;
-
-  src->kid = esrc;
-  /* Ensure the child is brought up to the right state to match the parent
-   * although it's currently always in READY and 
-   * we're always doing NULL->READY. */
-  if (GST_STATE (src->kid) < GST_STATE (src))
-    gst_element_set_state (src->kid, GST_STATE (src));
-
-  gst_bin_add (GST_BIN (src), esrc);
-
-  /* attach ghost pad */
-  GST_DEBUG_OBJECT (src, "Re-assigning ghostpad");
-  targetpad = gst_element_get_static_pad (src->kid, "src");
-  if (!gst_ghost_pad_set_target (GST_GHOST_PAD (src->pad), targetpad))
-    goto target_failed;
-
-  gst_object_unref (targetpad);
-  GST_DEBUG_OBJECT (src, "done changing auto audio source");
-
-  return TRUE;
-
-  /* ERRORS */
-no_src:
-  {
-    GST_ELEMENT_ERROR (src, LIBRARY, INIT, (NULL),
-        ("Failed to find a supported audio source"));
-    return FALSE;
-  }
-target_failed:
-  {
-    GST_ELEMENT_ERROR (src, LIBRARY, INIT, (NULL),
-        ("Failed to set target pad"));
-    gst_object_unref (targetpad);
-    return FALSE;
-  }
-}
-
-static GstStateChangeReturn
-gst_auto_audio_src_change_state (GstElement * element,
-    GstStateChange transition)
-{
-  GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
-  GstAutoAudioSrc *src = GST_AUTO_AUDIO_SRC (element);
-
-  switch (transition) {
-    case GST_STATE_CHANGE_NULL_TO_READY:
-      if (!gst_auto_audio_src_detect (src))
-        return GST_STATE_CHANGE_FAILURE;
-      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:
-      gst_auto_audio_src_reset (src);
-      break;
-    default:
-      break;
-  }
-
-  return ret;
-}
-
-static void
-gst_auto_audio_src_set_property (GObject * object, guint prop_id,
-    const GValue * value, GParamSpec * pspec)
-{
-  GstAutoAudioSrc *src = GST_AUTO_AUDIO_SRC (object);
-
-  switch (prop_id) {
-    case PROP_CAPS:
-      if (src->filter_caps)
-        gst_caps_unref (src->filter_caps);
-      src->filter_caps = gst_caps_copy (gst_value_get_caps (value));
-      break;
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-  }
-}
-
-static void
-gst_auto_audio_src_get_property (GObject * object, guint prop_id,
-    GValue * value, GParamSpec * pspec)
-{
-  GstAutoAudioSrc *src = GST_AUTO_AUDIO_SRC (object);
-
-  switch (prop_id) {
-    case PROP_CAPS:{
-      gst_value_set_caps (value, src->filter_caps);
-      break;
-    }
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-  }
-}