Actually, FAAC is LGPL, not GPL (like FAAD)

Original commit message from CVS:
Actually, FAAC is LGPL, not GPL (like FAAD)

1 files changed, 680 insertions, 0 deletions

diff --git a/ext/faac/gstfaac.c b/ext/faac/gstfaac.c
new file mode 100644
index 00000000..e5dddc17
--- /dev/null
+++ b/ext/faac/gstfaac.c
@@ -0,0 +1,680 @@
+/* GStreamer FAAC (Free AAC Encoder) plugin
+ * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstfaac.h"
+
+GST_PAD_TEMPLATE_FACTORY (src_template,
+  "src",
+  GST_PAD_SRC,
+  GST_PAD_ALWAYS,
+  GST_CAPS_NEW (
+    "faac_mpeg_templ",
+    "audio/mpeg",
+      "systemstream", GST_PROPS_BOOLEAN (FALSE),
+      "mpegversion",  GST_PROPS_LIST (
+                        GST_PROPS_INT (4), /* we prefer 4 */
+                        GST_PROPS_INT (2)
+                      ),
+      "channels",     GST_PROPS_INT_RANGE (1, 6),
+      "samplerate",   GST_PROPS_INT_RANGE (8000, 96000)
+  )
+);
+
+GST_PAD_TEMPLATE_FACTORY (sink_template,
+  "sink",
+  GST_PAD_SINK,
+  GST_PAD_ALWAYS,
+  GST_CAPS_NEW (
+    "faac_int16_templ",
+    "audio/x-raw-int",
+      "endianness", GST_PROPS_INT (G_BYTE_ORDER),
+      "signed",     GST_PROPS_BOOLEAN (TRUE),
+      "width",      GST_PROPS_INT (16),
+      "depth",      GST_PROPS_INT (16),
+      "rate",       GST_PROPS_INT_RANGE (8000, 96000),
+      "channels",   GST_PROPS_INT_RANGE (1, 6)
+  ),
+  GST_CAPS_NEW (
+    "faac_int24_templ",
+    "audio/x-raw-int",
+      "endianness", GST_PROPS_INT (G_BYTE_ORDER),
+      "signed",     GST_PROPS_BOOLEAN (TRUE),
+      "width",      GST_PROPS_INT (32),
+      "depth",      GST_PROPS_INT (24),
+      "rate",       GST_PROPS_INT_RANGE (8000, 96000),
+      "channels",   GST_PROPS_INT_RANGE (1, 6)
+  ),
+  GST_CAPS_NEW (
+    "faac_float_templ",
+    "audio/x-raw-float",
+      "endianness", GST_PROPS_INT (G_BYTE_ORDER),
+      "depth",      GST_PROPS_INT (32), /* float  */
+      "rate",       GST_PROPS_INT_RANGE (8000, 96000),
+      "channels",   GST_PROPS_INT_RANGE (1, 6)
+  )
+);
+
+enum {
+  ARG_0,
+  ARG_BITRATE,
+  ARG_PROFILE,
+  ARG_TNS,
+  ARG_MIDSIDE,
+  ARG_SHORTCTL
+  /* FILL ME */
+};
+
+static void     gst_faac_base_init    (GstFaacClass *klass);
+static void     gst_faac_class_init   (GstFaacClass *klass);
+static void     gst_faac_init         (GstFaac      *faac);
+
+static void     gst_faac_set_property (GObject      *object,
+				       guint         prop_id, 
+				       const GValue *value,
+				       GParamSpec   *pspec);
+static void     gst_faac_get_property (GObject      *object,
+				       guint         prop_id, 
+				       GValue       *value,
+				       GParamSpec   *pspec);
+
+static GstPadLinkReturn
+                gst_faac_sinkconnect  (GstPad       *pad,
+				       GstCaps      *caps);
+static GstPadLinkReturn
+                gst_faac_srcconnect   (GstPad       *pad,
+				       GstCaps      *caps);
+static void     gst_faac_chain        (GstPad       *pad,
+				       GstData      *data);
+static GstElementStateReturn
+                gst_faac_change_state (GstElement   *element);
+
+static GstElementClass *parent_class = NULL;
+/* static guint gst_faac_signals[LAST_SIGNAL] = { 0 }; */
+
+GType
+gst_faac_get_type (void)
+{
+  static GType gst_faac_type = 0;
+
+  if (!gst_faac_type) {
+    static const GTypeInfo gst_faac_info = {
+      sizeof (GstFaacClass),      
+      (GBaseInitFunc) gst_faac_base_init,
+      NULL,
+      (GClassInitFunc) gst_faac_class_init,
+      NULL,
+      NULL,
+      sizeof(GstFaac),
+      0,
+      (GInstanceInitFunc) gst_faac_init,
+    };
+
+    gst_faac_type = g_type_register_static (GST_TYPE_ELEMENT,
+					    "GstFaac",
+					    &gst_faac_info, 0);
+  }
+
+  return gst_faac_type;
+}
+
+static void
+gst_faac_base_init (GstFaacClass *klass)
+{
+  GstElementDetails gst_faac_details = {
+    "Free AAC Encoder (FAAC)",
+    "Codec/Audio/Encoder",
+    "Free MPEG-2/4 AAC encoder",
+    "Ronald Bultje <rbultje@ronald.bitfreak.net>",
+  };
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+  gst_element_class_add_pad_template (element_class,
+	GST_PAD_TEMPLATE_GET (src_template));
+  gst_element_class_add_pad_template (element_class,
+	GST_PAD_TEMPLATE_GET (sink_template));
+
+  gst_element_class_set_details (element_class, &gst_faac_details);
+}
+
+#define GST_TYPE_FAAC_PROFILE (gst_faac_profile_get_type ())
+static GType
+gst_faac_profile_get_type (void)
+{
+  static GType gst_faac_profile_type = 0;
+
+  if (!gst_faac_profile_type) {
+    static GEnumValue gst_faac_profile[] = {
+      { MAIN, "MAIN", "Main profile"                   },
+      { LOW,  "LOW",  "Low complexity profile"         },
+      { SSR,  "SSR",  "Scalable sampling rate profile" },
+      { LTP,  "LTP",  "Long term prediction profile"   },
+      { 0, NULL, NULL },
+    };
+
+    gst_faac_profile_type = g_enum_register_static ("GstFaacProfile",
+						    gst_faac_profile);
+  }
+
+  return gst_faac_profile_type;
+}
+
+#define GST_TYPE_FAAC_SHORTCTL (gst_faac_shortctl_get_type ())
+static GType
+gst_faac_shortctl_get_type (void)
+{
+  static GType gst_faac_shortctl_type = 0;
+
+  if (!gst_faac_shortctl_type) {
+    static GEnumValue gst_faac_shortctl[] = {
+      { SHORTCTL_NORMAL,  "SHORTCTL_NORMAL",  "Normal block type" },
+      { SHORTCTL_NOSHORT, "SHORTCTL_NOSHORT", "No short blocks"   },
+      { SHORTCTL_NOLONG,  "SHORTCTL_NOLONG",  "No long blocks"    },
+      { 0, NULL, NULL },
+    };
+
+    gst_faac_shortctl_type = g_enum_register_static ("GstFaacShortCtl",
+						    gst_faac_shortctl);
+  }
+
+  return gst_faac_shortctl_type;
+}
+
+static void
+gst_faac_class_init (GstFaacClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
+
+  parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+  /* properties */
+  g_object_class_install_property (gobject_class, ARG_BITRATE,
+    g_param_spec_int ("bitrate", "Bitrate (bps)", "Bitrate in bits/sec",
+                      8 * 1024, 320 * 1024, 128 * 1024, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_PROFILE,
+    g_param_spec_enum ("profile", "Profile", "MPEG/AAC encoding profile",
+                       GST_TYPE_FAAC_PROFILE, MAIN, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_TNS,
+    g_param_spec_boolean ("tns", "TNS", "Use temporal noise shaping",
+                          FALSE, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_MIDSIDE,
+    g_param_spec_boolean ("midside", "Midside", "Allow mid/side encoding",
+                          TRUE, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, ARG_SHORTCTL,
+    g_param_spec_enum ("shortctl", "Block type",
+		       "Block type encorcing",
+                       GST_TYPE_FAAC_SHORTCTL, MAIN, G_PARAM_READWRITE));
+
+  /* virtual functions */
+  gstelement_class->change_state = gst_faac_change_state;
+
+  gobject_class->set_property = gst_faac_set_property;
+  gobject_class->get_property = gst_faac_get_property;
+}
+
+static void
+gst_faac_init (GstFaac *faac)
+{
+  faac->handle = NULL;
+  faac->samplerate = -1;
+  faac->channels = -1;
+  faac->cache = NULL;
+  faac->cache_time = GST_CLOCK_TIME_NONE;
+  faac->cache_duration = 0;
+
+  GST_FLAG_SET (faac, GST_ELEMENT_EVENT_AWARE);
+
+  faac->sinkpad = gst_pad_new_from_template (
+	GST_PAD_TEMPLATE_GET (sink_template), "sink");
+  gst_element_add_pad (GST_ELEMENT (faac), faac->sinkpad);
+  gst_pad_set_chain_function (faac->sinkpad, gst_faac_chain);
+  gst_pad_set_link_function (faac->sinkpad, gst_faac_sinkconnect);
+
+  faac->srcpad = gst_pad_new_from_template (
+	GST_PAD_TEMPLATE_GET (src_template), "src");
+  gst_element_add_pad (GST_ELEMENT (faac), faac->srcpad);
+  gst_pad_set_link_function (faac->srcpad, gst_faac_srcconnect);
+
+  /* default properties */
+  faac->bitrate = 1024 * 128;
+  faac->profile = MAIN;
+  faac->shortctl = SHORTCTL_NORMAL;
+  faac->tns = FALSE;
+  faac->midside = TRUE;
+}
+
+static GstPadLinkReturn
+gst_faac_sinkconnect (GstPad  *pad,
+		      GstCaps *caps)
+{
+  GstFaac *faac = GST_FAAC (gst_pad_get_parent (pad));
+
+  if (!GST_CAPS_IS_FIXED (caps))
+    return GST_PAD_LINK_DELAYED;
+
+  if (faac->handle) {
+    faacEncClose (faac->handle);
+    faac->handle = NULL;
+  }
+  if (faac->cache) {
+    gst_buffer_unref (faac->cache);
+    faac->cache = NULL;
+  }
+
+  for (; caps != NULL; caps = caps->next) {
+    faacEncHandle *handle;
+    gint channels, samplerate, depth;
+    gulong samples, bytes, fmt = 0, bps = 0;
+
+    gst_caps_get (caps, "channels", &channels,
+			"rate",     &samplerate,
+			"depth",    &depth, NULL);
+
+    /* open a new handle to the encoder */
+    if (!(handle = faacEncOpen (samplerate, channels,
+				&samples, &bytes)))
+      continue;
+
+    switch (depth) {
+      case 16:
+        fmt = FAAC_INPUT_16BIT;
+        bps = 2;
+        break;
+      case 24:
+        fmt = FAAC_INPUT_32BIT; /* 24-in-32, actually */
+        bps = 4;
+        break;
+      case 32:
+        fmt = FAAC_INPUT_FLOAT; /* see template, this is right */
+        bps = 4;
+        break;
+    }
+
+    if (!fmt) {
+      faacEncClose (handle);
+      continue;
+    }
+
+    faac->format = fmt;
+    faac->bps = bps;
+    faac->handle = handle;
+    faac->bytes = bytes;
+    faac->samples = samples;
+    faac->channels = channels;
+    faac->samplerate = samplerate;
+
+    /* if the other side was already set-up, redo that */
+    if (GST_PAD_CAPS (faac->srcpad))
+      return gst_faac_srcconnect (faac->srcpad,
+				  gst_pad_get_allowed_caps (faac->srcpad));
+
+    /* else, that'll be done later */
+    return GST_PAD_LINK_OK;
+  }
+
+  return GST_PAD_LINK_REFUSED;
+}
+
+static GstPadLinkReturn
+gst_faac_srcconnect (GstPad  *pad,
+		     GstCaps *caps)
+{
+  GstFaac *faac = GST_FAAC (gst_pad_get_parent (pad));
+  GstCaps *t;
+
+  if (!faac->handle ||
+      (faac->samplerate == -1 || faac->channels == -1)) {
+    return GST_PAD_LINK_DELAYED;
+  }
+
+  /* we do samplerate/channels ourselves */
+  for (t = caps; t != NULL; t = t->next) {
+    gst_props_remove_entry_by_name (t->properties, "rate");
+    gst_props_remove_entry_by_name (t->properties, "channels");
+  }
+
+  /* go through list */
+  caps = gst_caps_normalize (caps);
+  for ( ; caps != NULL; caps = caps->next) {
+    faacEncConfiguration *conf;
+    gint mpegversion = 0;
+    GstCaps *newcaps;
+    GstPadLinkReturn ret;
+
+    gst_caps_get_int (caps, "mpegversion", &mpegversion);
+
+    /* new conf */
+    conf = faacEncGetCurrentConfiguration (faac->handle);
+    conf->mpegVersion = (mpegversion == 4) ? MPEG4 : MPEG2;
+    conf->aacObjectType = faac->profile;
+    conf->allowMidside = faac->midside;
+    conf->useLfe = 0;
+    conf->useTns = faac->tns;
+    conf->bitRate = faac->bitrate;
+    conf->inputFormat = faac->format;
+
+    /* FIXME: this one here means that we do not support direct
+     * "MPEG audio file" output (like mp3). This means we can
+     * only mux this into mov/qt (mp4a) or matroska or so. If
+     * we want to support direct AAC file output, we need ADTS
+     * headers, and we need to find a way in the caps to detect
+     * that (that the next element is filesink or any element
+     * that does want ADTS headers). */
+
+    conf->outputFormat = 0; /* raw, no ADTS headers */
+    conf->shortctl = faac->shortctl;
+    if (!faacEncSetConfiguration (faac->handle, conf)) {
+      GST_WARNING ("Faac doesn't support the current conf");
+      continue;
+    }
+
+    newcaps = GST_CAPS_NEW ("faac_mpeg_caps",
+			    "audio/mpeg",
+			      "systemstream", GST_PROPS_BOOLEAN (FALSE),
+			      "mpegversion",  GST_PROPS_INT (mpegversion),
+			      "channels",     GST_PROPS_INT (faac->channels),
+			      "rate",         GST_PROPS_INT (faac->samplerate));
+    ret = gst_pad_try_set_caps (faac->srcpad, newcaps);
+
+    switch (ret) {
+      case GST_PAD_LINK_OK:
+      case GST_PAD_LINK_DONE:
+        return GST_PAD_LINK_DONE;
+      case GST_PAD_LINK_DELAYED:
+        return GST_PAD_LINK_DELAYED;
+      default:
+        break;
+    }
+  }
+
+  return GST_PAD_LINK_REFUSED;
+}
+
+static void
+gst_faac_chain (GstPad  *pad,
+		GstData *data)
+{
+  GstFaac *faac = GST_FAAC (gst_pad_get_parent (pad));
+  GstBuffer *inbuf, *outbuf, *subbuf;
+  guint size, ret_size, in_size, frame_size;
+
+  if (GST_IS_EVENT (data)) {
+    GstEvent *event = GST_EVENT (data);
+
+    switch (GST_EVENT_TYPE (event)) {
+      case GST_EVENT_EOS:
+        /* flush first */
+        while (1) {
+          outbuf = gst_buffer_new_and_alloc (faac->bytes);
+          if ((ret_size = faacEncEncode (faac->handle,
+					 NULL, 0,
+					 GST_BUFFER_DATA (outbuf),
+					 faac->bytes)) < 0) {
+            gst_element_error (GST_ELEMENT (faac), "Error during AAC encoding");
+            gst_event_unref (event);
+            gst_buffer_unref (outbuf);
+            return;
+          }
+
+          if (ret_size > 0) {
+            GST_BUFFER_SIZE (outbuf) = ret_size;
+            GST_BUFFER_TIMESTAMP (outbuf) = 0;
+            GST_BUFFER_DURATION (outbuf) = 0;
+            gst_pad_push (faac->srcpad, GST_DATA (outbuf));
+          } else {
+            break;
+          }
+        }
+
+        gst_element_set_eos (GST_ELEMENT (faac));
+        gst_pad_push (faac->srcpad, data);
+        return;
+      default:
+	gst_pad_event_default (pad, event);
+        return;
+    }
+  }
+
+  inbuf = GST_BUFFER (data);
+
+  if (!faac->handle) {
+    gst_element_error (GST_ELEMENT (faac),
+		       "No input format negotiated");
+    gst_buffer_unref (inbuf);
+    return;
+  }
+
+  if (!GST_PAD_CAPS (faac->srcpad)) {
+    if (gst_faac_srcconnect (faac->srcpad,
+			     gst_pad_get_allowed_caps (faac->srcpad)) <= 0) {
+      gst_element_error (GST_ELEMENT (faac),
+			 "Failed to negotiate MPEG/AAC format with next element");
+      gst_buffer_unref (inbuf);
+      return;
+    }
+  }
+
+  size = GST_BUFFER_SIZE (inbuf);
+  in_size = size;
+  if (faac->cache)
+    in_size += GST_BUFFER_SIZE (faac->cache);
+  frame_size = faac->samples * faac->bps;
+
+  while (1) {
+    /* do we have enough data for one frame? */
+    if (in_size / faac->bps < faac->samples) {
+      if (in_size > size) {
+        /* this is panic! we got a buffer, but still don't have enough
+         * data. Merge them and retry in the next cycle... */
+        faac->cache = gst_buffer_merge (faac->cache, inbuf);
+      } else if (in_size == size) {
+        /* this shouldn't happen, but still... */
+        faac->cache = inbuf;
+      } else if (in_size > 0) {
+        faac->cache = gst_buffer_create_sub (inbuf, size - in_size,
+					     in_size);
+        GST_BUFFER_DURATION (faac->cache) =
+	  GST_BUFFER_DURATION (inbuf) * GST_BUFFER_SIZE (faac->cache) / size;
+        GST_BUFFER_TIMESTAMP (faac->cache) =
+	  GST_BUFFER_TIMESTAMP (inbuf) + (GST_BUFFER_DURATION (inbuf) *
+	    (size - in_size) / size);
+        gst_buffer_unref (inbuf);
+      } else {
+        gst_buffer_unref (inbuf);
+      }
+          
+      return;
+    }
+
+    /* create the frame */
+    if (in_size > size) {
+      /* merge */
+      subbuf = gst_buffer_create_sub (inbuf, 0, frame_size - (in_size - size));
+      GST_BUFFER_DURATION (subbuf) =
+	GST_BUFFER_DURATION (inbuf) * GST_BUFFER_SIZE (subbuf) / size;
+      subbuf = gst_buffer_merge (faac->cache, subbuf);
+      faac->cache = NULL;
+    } else {
+      subbuf = gst_buffer_create_sub (inbuf, size - in_size, frame_size);
+      GST_BUFFER_DURATION (subbuf) =
+	GST_BUFFER_DURATION (inbuf) * GST_BUFFER_SIZE (subbuf) / size;
+      GST_BUFFER_TIMESTAMP (subbuf) =
+	GST_BUFFER_TIMESTAMP (inbuf) + (GST_BUFFER_DURATION (inbuf) *
+	  (size - in_size) / size);
+    }
+
+    outbuf = gst_buffer_new_and_alloc (faac->bytes);
+    if ((ret_size = faacEncEncode (faac->handle,
+				   (gint32 *) GST_BUFFER_DATA (subbuf),
+				   GST_BUFFER_SIZE (subbuf) / faac->bps,
+				   GST_BUFFER_DATA (outbuf),
+				   faac->bytes)) < 0) {
+      gst_element_error (GST_ELEMENT (faac), "Error during AAC encoding");
+      gst_buffer_unref (inbuf);
+      gst_buffer_unref (subbuf);
+      return;
+    }
+
+    if (ret_size > 0) {
+      GST_BUFFER_SIZE (outbuf) = ret_size;
+      if (faac->cache_time != GST_CLOCK_TIME_NONE) {
+        GST_BUFFER_TIMESTAMP (outbuf) = faac->cache_time;
+        faac->cache_time = GST_CLOCK_TIME_NONE;
+      } else
+        GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (subbuf);
+      GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (subbuf);
+      if (faac->cache_duration) {
+        GST_BUFFER_DURATION (outbuf) += faac->cache_duration;
+        faac->cache_duration = 0;
+      }
+      gst_pad_push (faac->srcpad, GST_DATA (outbuf));
+    } else {
+      /* FIXME: what I'm doing here isn't fully correct, but there
+       * really isn't a better way yet.
+       * Problem is that libfaac caches buffers (for encoding
+       * purposes), so the timestamp of the outgoing buffer isn't
+       * the same as the timestamp of the data that I pushed in.
+       * However, I don't know the delay between those two so I
+       * cannot really say aything about it. This is a bad guess. */
+
+      gst_buffer_unref (outbuf);
+      if (faac->cache_time != GST_CLOCK_TIME_NONE)
+        faac->cache_time = GST_BUFFER_TIMESTAMP (subbuf);
+      faac->cache_duration += GST_BUFFER_DURATION (subbuf);
+    }
+
+    in_size -= frame_size;
+    gst_buffer_unref (subbuf);
+  }
+}
+
+static void
+gst_faac_set_property (GObject      *object,
+		       guint         prop_id, 
+		       const GValue *value,
+		       GParamSpec   *pspec)
+{
+  GstFaac *faac = GST_FAAC (object);
+
+  switch (prop_id) {
+    case ARG_BITRATE:
+      faac->bitrate = g_value_get_int (value);
+      break;
+    case ARG_PROFILE:
+      faac->profile = g_value_get_enum (value);
+      break;
+    case ARG_TNS:
+      faac->tns = g_value_get_boolean (value);
+      break;
+    case ARG_MIDSIDE:
+      faac->midside = g_value_get_boolean (value);
+      break;
+    case ARG_SHORTCTL:
+      faac->shortctl = g_value_get_enum (value);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_faac_get_property (GObject    *object,
+		       guint       prop_id, 
+		       GValue     *value,
+		       GParamSpec *pspec)
+{
+  GstFaac *faac = GST_FAAC (object);
+
+  switch (prop_id) {
+    case ARG_BITRATE:
+      g_value_set_int (value, faac->bitrate);
+      break;
+    case ARG_PROFILE:
+      g_value_set_enum (value, faac->profile);
+      break;
+    case ARG_TNS:
+      g_value_set_boolean (value, faac->tns);
+      break;
+    case ARG_MIDSIDE:
+      g_value_set_boolean (value, faac->midside);
+      break;
+    case ARG_SHORTCTL:
+      g_value_set_enum (value, faac->shortctl);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static GstElementStateReturn
+gst_faac_change_state (GstElement *element)
+{
+  GstFaac *faac = GST_FAAC (element);
+
+  switch (GST_STATE_TRANSITION (element)) {
+    case GST_STATE_PAUSED_TO_READY:
+      if (faac->handle) {
+        faacEncClose (faac->handle);
+        faac->handle = NULL;
+      }
+      if (faac->cache) {
+        gst_buffer_unref (faac->cache);
+        faac->cache = NULL;
+      }
+      faac->cache_time = GST_CLOCK_TIME_NONE;
+      faac->cache_duration = 0;
+      faac->samplerate = -1;
+      faac->channels = -1;
+      break;
+    default:
+      break;
+  }
+
+  if (GST_ELEMENT_CLASS (parent_class)->change_state)
+    return GST_ELEMENT_CLASS (parent_class)->change_state (element);
+
+  return GST_STATE_SUCCESS;
+}
+
+static gboolean
+plugin_init (GstPlugin *plugin)
+{
+  return gst_element_register (plugin, "faac",
+			       GST_RANK_NONE,
+			       GST_TYPE_FAAC);
+}
+
+GST_PLUGIN_DEFINE (
+  GST_VERSION_MAJOR,
+  GST_VERSION_MINOR,
+  "faac",
+  "Free AAC Encoder (FAAC)",
+  plugin_init,
+  VERSION,
+  "LGPL",
+  GST_COPYRIGHT,
+  GST_PACKAGE,
+  GST_ORIGIN
+)