ext/soundtouch/: Add BPM detection plugin based on SoundTouch's libBPM.

Original commit message from CVS:
* ext/soundtouch/Makefile.am:
* ext/soundtouch/gstbpmdetect.cc:
* ext/soundtouch/gstbpmdetect.hh:
* ext/soundtouch/plugin.c: (plugin_init):
Add BPM detection plugin based on SoundTouch's libBPM.
* ext/soundtouch/gstpitch.cc:
Allow sample rates until MAX instead of only 48kHz and remove the
buffer-frames field from that caps.
Clear the remaining samples completely when necessary to get into
a clean state again.

1 files changed, 9 insertions, 20 deletions

diff --git a/ext/soundtouch/gstpitch.cc b/ext/soundtouch/gstpitch.cc
index 83c043e9..7ee726f0 100644
--- a/ext/soundtouch/gstpitch.cc
+++ b/ext/soundtouch/gstpitch.cc
@@ -62,11 +62,10 @@ enum
 #define SUPPORTED_CAPS \
 GST_STATIC_CAPS( \
   "audio/x-raw-float, " \
-    "rate = (int) [ 8000, 48000 ], " \
+    "rate = (int) [ 8000, MAX ], " \
     "channels = (int) [ 1, 2 ], " \
     "endianness = (int) BYTE_ORDER, " \
-    "width = (int) 32, " \
-    "buffer-frames = (int) [ 0, MAX ]" \
+    "width = (int) 32" \
 )
 
 static GstStaticPadTemplate gst_pitch_sink_template =
@@ -124,6 +123,9 @@ gst_pitch_class_init (GstPitchClass * klass)
   gobject_class = G_OBJECT_CLASS (klass);
   element_class = GST_ELEMENT_CLASS (klass);
 
+  GST_DEBUG_CATEGORY_INIT (pitch_debug, "pitch", 0,
+      "audio pitch control element");
+
   gobject_class->set_property = gst_pitch_set_property;
   gobject_class->get_property = gst_pitch_get_property;
   gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_pitch_dispose);
@@ -725,9 +727,11 @@ gst_pitch_sink_event (GstPad * pad, GstEvent * event)
   switch (GST_EVENT_TYPE (event)) {
     case GST_EVENT_FLUSH_STOP:
       gst_pitch_flush_buffer (pitch, FALSE);
+      pitch->priv->st->clear ();
       break;
     case GST_EVENT_EOS:
       gst_pitch_flush_buffer (pitch, TRUE);
+      pitch->priv->st->clear ();
       break;
     case GST_EVENT_NEWSEGMENT:
       if (!gst_pitch_process_segment (pitch, &event)) {
@@ -737,6 +741,7 @@ gst_pitch_sink_event (GstPad * pad, GstEvent * event)
         GST_PITCH_GET_PRIVATE (pitch)->pending_segment = event;
         event = NULL;
       }
+      pitch->priv->st->clear ();
       break;
     default:
       break;
@@ -812,6 +817,7 @@ gst_pitch_change_state (GstElement * element, GstStateChange transition)
     case GST_STATE_CHANGE_READY_TO_PAUSED:
       pitch->next_buffer_time = 0;
       pitch->next_buffer_offset = 0;
+      pitch->priv->st->clear ();
       break;
     case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
       break;
@@ -839,20 +845,3 @@ gst_pitch_change_state (GstElement * element, GstStateChange transition)
 
   return ret;
 }
-
-static gboolean
-plugin_init (GstPlugin * plugin)
-{
-  gst_controller_init (NULL, NULL);
-
-  GST_DEBUG_CATEGORY_INIT (pitch_debug, "pitch", 0,
-      "audio pitch control element");
-
-  return gst_element_register (plugin, "pitch", GST_RANK_NONE, GST_TYPE_PITCH);
-}
-
-GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
-    GST_VERSION_MINOR,
-    "soundtouch",
-    "Audio Pitch Controller",
-    plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)