Add a trm plugin

Original commit message from CVS:
Add a trm plugin

1 files changed, 379 insertions, 0 deletions

diff --git a/ext/musicbrainz/gsttrm.c b/ext/musicbrainz/gsttrm.c
new file mode 100644
index 00000000..817cbee9
--- /dev/null
+++ b/ext/musicbrainz/gsttrm.c
@@ -0,0 +1,379 @@
+/* GStreamer trm plugin
+ * Copyright (C) 2004 Jeremy Simon <jsimon13@yahoo.fr>
+ *
+ * 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 <string.h>
+#include <sys/time.h>
+
+#include "gsttrm.h"
+
+/* musicbrainz signals and args */
+enum {
+  SIGNAL_SIGNATURE_AVAILABLE,
+  LAST_SIGNAL
+};
+
+
+enum {
+  ARG_0,
+  ARG_SIGNATURE,
+  ARG_ASCII_SIGNATURE
+};
+
+
+GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE (
+  "src",
+  GST_PAD_SRC,
+  GST_PAD_ALWAYS,
+  GST_STATIC_CAPS ("audio/x-raw-int, "
+      "endianness = (int) BYTE_ORDER, "
+      "signed = (bool) TRUE, "
+      "width = (int) { 8, 16 }, "
+      "depth = (int) { 8, 16 }, "
+      "rate = (int) [ 8000, 96000 ], "
+      "channels = (int) [ 1, 2 ]"
+  )
+);
+
+
+GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE (
+  "sink",
+  GST_PAD_SINK,
+  GST_PAD_ALWAYS,
+  GST_STATIC_CAPS ("audio/x-raw-int, "
+      "endianness = (int) BYTE_ORDER, "
+      "signed = (bool) TRUE, "
+      "width = (int) { 8, 16 }, "
+      "depth = (int) { 8, 16 }, "
+      "rate = (int) [ 8000, 96000 ], "
+      "channels = (int) [ 1, 2 ]"
+  )
+);
+
+   
+static void	gst_musicbrainz_class_init		(GstMusicBrainzClass *klass);
+static void	gst_musicbrainz_base_init 		(GstMusicBrainzClass *klass);
+static void	gst_musicbrainz_init	 		(GstMusicBrainz *musicbrainz);
+
+static void	gst_musicbrainz_chain			(GstPad *pad, GstData *data);
+
+static void	gst_musicbrainz_set_property 		(GObject *object, guint prop_id, 
+					  		 const GValue *value, GParamSpec *pspec);
+static void	gst_musicbrainz_get_property		(GObject *object, guint prop_id, 
+							 GValue *value, GParamSpec *pspec);
+
+static GstElementStateReturn 
+		gst_musicbrainz_change_state 		(GstElement *element);
+
+
+static GstElementClass *parent_class = NULL;
+static guint gst_musicbrainz_signals[LAST_SIGNAL] = { 0 };
+
+
+GType
+gst_musicbrainz_get_type (void)
+{
+  static GType musicbrainz_type = 0;
+
+  if (!musicbrainz_type) {
+    static const GTypeInfo musicbrainz_info = {
+      sizeof(GstMusicBrainzClass),
+      (GBaseInitFunc) gst_musicbrainz_base_init,
+      NULL,
+      (GClassInitFunc) gst_musicbrainz_class_init,
+      NULL,
+      NULL,
+      sizeof(GstMusicBrainz),
+      0,
+      (GInstanceInitFunc)gst_musicbrainz_init,
+    };
+    musicbrainz_type = g_type_register_static (GST_TYPE_ELEMENT, 
+						"GstMusicBrainz", 
+						&musicbrainz_info, 0);
+  }
+  return musicbrainz_type;
+}
+
+
+static void
+gst_musicbrainz_base_init (GstMusicBrainzClass *klass)
+{
+  GstElementDetails gst_musicbrainz_details = {
+    "Compute TRM Id",
+    "Codec/Audio/Decoder",
+    "Computr TRM Id from muscibrainz",
+    "Jeremy Simon <jsimon13@yahoo.fr>",
+  };
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+  gst_element_class_add_pad_template (element_class,
+	gst_static_pad_template_get (&src_template));
+  gst_element_class_add_pad_template (element_class,
+	gst_static_pad_template_get (&sink_template));
+
+  gst_element_class_set_details (element_class, &gst_musicbrainz_details);
+}
+
+
+
+static void
+gst_musicbrainz_class_init (GstMusicBrainzClass *klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+
+  gobject_class = (GObjectClass*)klass;
+  gstelement_class = (GstElementClass*)klass;
+
+  parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_SIGNATURE,
+    g_param_spec_string ("signature","signature","signature", 
+                         NULL, G_PARAM_READABLE)); 
+  g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_ASCII_SIGNATURE,
+    g_param_spec_string ("ascii_signature","ascii_signature","ascii_signature",
+                         NULL, G_PARAM_READABLE));
+
+  gobject_class->set_property = gst_musicbrainz_set_property;
+  gobject_class->get_property = gst_musicbrainz_get_property;
+
+  gst_musicbrainz_signals[SIGNAL_SIGNATURE_AVAILABLE] =
+    g_signal_new ("signture_available", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
+                   G_STRUCT_OFFSET (GstMusicBrainzClass, signature_available), NULL, NULL,
+                   g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+
+  gstelement_class->change_state = gst_musicbrainz_change_state;
+}
+
+static GstPadLinkReturn
+gst_musicbrainz_sinkconnect (GstPad *pad, const GstCaps *caps)
+{
+  GstMusicBrainz *musicbrainz;
+  GstStructure *structure;
+  const gchar *mimetype;
+  gint width;
+
+  musicbrainz = GST_MUSICBRAINZ (gst_pad_get_parent (pad)); 
+ 
+  musicbrainz->caps = caps;
+
+  structure = gst_caps_get_structure (caps, 0);
+  mimetype = gst_structure_get_name (structure);
+
+  if (!gst_structure_get_int (structure, "depth", &musicbrainz->depth) ||
+      !gst_structure_get_int (structure, "width", &width))
+      return GST_PAD_LINK_REFUSED;
+
+  if (musicbrainz->depth != width)
+      return GST_PAD_LINK_REFUSED;
+
+  if (!gst_structure_get_int (structure, "channels", &musicbrainz->channels))
+      return GST_PAD_LINK_REFUSED;
+
+  if (!gst_structure_get_int (structure, "rate", &musicbrainz->rate))
+      return GST_PAD_LINK_REFUSED;
+
+  trm_SetPCMDataInfo (musicbrainz->trm, musicbrainz->rate, musicbrainz->channels, musicbrainz->depth);
+  musicbrainz->linked= TRUE;
+
+  return GST_PAD_LINK_OK; 
+}
+
+
+static void
+gst_musicbrainz_init (GstMusicBrainz *musicbrainz)
+{
+  musicbrainz->sinkpad = gst_pad_new_from_template (
+		  gst_static_pad_template_get (&sink_template), "sink");
+  gst_element_add_pad (GST_ELEMENT (musicbrainz), musicbrainz->sinkpad);
+  gst_pad_set_chain_function (musicbrainz->sinkpad, gst_musicbrainz_chain);
+  gst_pad_set_link_function (musicbrainz->sinkpad, gst_musicbrainz_sinkconnect);
+
+  musicbrainz->srcpad = gst_pad_new_from_template (
+		  gst_static_pad_template_get (&src_template), "src");
+  gst_element_add_pad (GST_ELEMENT (musicbrainz), musicbrainz->srcpad);
+
+  musicbrainz->trm = NULL;
+  musicbrainz->linked = FALSE;
+  musicbrainz->data_available = FALSE;
+  musicbrainz->total_time = 0;
+  musicbrainz->signature_available = FALSE;
+
+  GST_FLAG_SET (musicbrainz, GST_ELEMENT_EVENT_AWARE);
+  /*GST_FLAG_SET(musicbrainz, GST_ELEMENT_THREAD_SUGGESTED);*/
+}
+
+static void
+gst_trm_handle_event (GstPad *pad, GstData *data)
+{
+  GstEvent *event = GST_EVENT (data);
+
+  gst_pad_event_default (pad, event);
+}
+
+static void
+gst_musicbrainz_chain (GstPad *pad, GstData *data)
+{
+  GstMusicBrainz *musicbrainz;
+  GstBuffer *buf;
+  static GstFormat format = GST_FORMAT_TIME;
+  gint64 nanos;
+
+  g_return_if_fail (pad != NULL);
+  g_return_if_fail (GST_IS_PAD (pad));
+
+  musicbrainz = GST_MUSICBRAINZ (gst_pad_get_parent (pad));
+
+  if (GST_IS_EVENT (data))
+  {
+    gst_trm_handle_event (pad, data);
+    return;
+  }
+
+  buf = GST_BUFFER (data);
+  
+  if (musicbrainz->linked && !musicbrainz->data_available)
+    if (gst_pad_query (gst_pad_get_peer (pad), GST_QUERY_TOTAL, &format, &nanos))
+    {
+      musicbrainz->total_time = nanos / GST_SECOND;
+      trm_SetSongLength(musicbrainz->trm, musicbrainz->total_time);
+      musicbrainz->data_available = TRUE;
+
+      gst_pad_try_set_caps (musicbrainz->srcpad, musicbrainz->caps);
+    }
+
+  if (!musicbrainz->signature_available && trm_GenerateSignature (musicbrainz->trm, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf)))
+  {
+    GST_DEBUG ("Signature");
+
+    trm_FinalizeSignature(musicbrainz->trm, musicbrainz->signature, NULL);
+    trm_ConvertSigToASCII (musicbrainz->trm, musicbrainz->signature, musicbrainz->ascii_signature);
+g_print ("Signature : %s\n", musicbrainz->ascii_signature);
+    musicbrainz->signature_available = TRUE;
+    g_signal_emit (G_OBJECT(musicbrainz),gst_musicbrainz_signals[SIGNAL_SIGNATURE_AVAILABLE], 0);
+
+    GST_DEBUG ("Signature : %s", musicbrainz->ascii_signature);
+
+    musicbrainz->signature_available = TRUE;
+  }
+
+  gst_pad_push (musicbrainz->srcpad, data);
+}
+
+
+static void
+gst_musicbrainz_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
+{
+  GstMusicBrainz *musicbrainz;
+
+  /* it's not null if we got it, but it might not be ours */
+  g_return_if_fail (GST_IS_MUSICBRAINZ (object));
+
+  musicbrainz = GST_MUSICBRAINZ (object);
+
+  switch (prop_id) {
+    case ARG_SIGNATURE:
+    case ARG_ASCII_SIGNATURE:
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+
+}
+
+static void
+gst_musicbrainz_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+{
+  GstMusicBrainz *musicbrainz;
+
+  /* it's not null if we got it, but it might not be ours */
+  musicbrainz = GST_MUSICBRAINZ(object);
+
+  switch (prop_id) {
+    case ARG_SIGNATURE: {
+      g_value_set_string (value, musicbrainz->signature);
+      break;
+    }
+    case ARG_ASCII_SIGNATURE: {
+      g_value_set_string (value, musicbrainz->ascii_signature);
+      break;
+    }
+    default: {
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+    }
+  }
+}
+
+
+static GstElementStateReturn
+gst_musicbrainz_change_state (GstElement *element)
+{
+  GstMusicBrainz *musicbrainz;
+
+  g_return_val_if_fail (GST_IS_MUSICBRAINZ (element), GST_STATE_FAILURE);
+
+  musicbrainz = GST_MUSICBRAINZ (element);
+
+  switch (GST_STATE_TRANSITION (element)) {
+    case GST_STATE_READY_TO_PAUSED:
+      musicbrainz->trm = trm_New ();
+      break;
+    case GST_STATE_PAUSED_TO_READY:
+      trm_Delete (musicbrainz->trm);
+      musicbrainz->trm = NULL;
+      musicbrainz->linked = FALSE;
+      musicbrainz->data_available = FALSE;
+      musicbrainz->total_time = 0;
+      musicbrainz->signature_available = FALSE;
+      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, "trm",
+			       GST_RANK_NONE,
+			       GST_TYPE_MUSICBRAINZ);
+}
+
+
+GST_PLUGIN_DEFINE (
+  GST_VERSION_MAJOR,
+  GST_VERSION_MINOR,
+  "trm",
+  "A trm signature producer",
+  plugin_init,
+  VERSION,
+  "GPL",
+  GST_PACKAGE,
+  GST_ORIGIN
+)