1 files changed, 142 insertions, 0 deletions
diff --git a/gst/siren/gstrtpsirendepay.c b/gst/siren/gstrtpsirendepay.c
new file mode 100644
index 00000000..9e6c5345
--- /dev/null
+++ b/gst/siren/gstrtpsirendepay.c
@@ -0,0 +1,142 @@
+/*
+ * Siren Depayloader Gst Element
+ *
+ *   @author: Youness Alaoui <kakaroto@kakaroto.homelinux.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 <string.h>
+#include <stdlib.h>
+#include <gst/rtp/gstrtpbuffer.h>
+#include "gstrtpsirendepay.h"
+
+/* elementfactory information */
+static const GstElementDetails gst_rtp_siren_depay_details =
+GST_ELEMENT_DETAILS ("RTP Siren packet depayloader",
+    "Codec/Depayloader/Network",
+    "Extracts Siren audio from RTP packets",
+    "Philippe Kalaf <philippe.kalaf@collabora.co.uk>");
+
+
+static GstStaticPadTemplate gst_rtp_siren_depay_sink_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("application/x-rtp, "
+        "media = (string) \"audio\", "
+        "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
+        "clock-rate = (int) 16000, "
+        "encoding-name = (string) \"SIREN\", "
+        "dct-length = (int) 320")
+    );
+
+static GstStaticPadTemplate gst_rtp_siren_depay_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("audio/x-siren, " "dct-length = (int) 320")
+    );
+
+static GstBuffer *gst_rtp_siren_depay_process (GstBaseRTPDepayload * depayload,
+    GstBuffer * buf);
+static gboolean gst_rtp_siren_depay_setcaps (GstBaseRTPDepayload * depayload,
+    GstCaps * caps);
+
+GST_BOILERPLATE (GstRTPSirenDepay, gst_rtp_siren_depay, GstBaseRTPDepayload,
+    GST_TYPE_BASE_RTP_DEPAYLOAD);
+
+static void
+gst_rtp_siren_depay_base_init (gpointer klass)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&gst_rtp_siren_depay_src_template));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&gst_rtp_siren_depay_sink_template));
+  gst_element_class_set_details (element_class, &gst_rtp_siren_depay_details);
+}
+
+static void
+gst_rtp_siren_depay_class_init (GstRTPSirenDepayClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+  GstBaseRTPDepayloadClass *gstbasertpdepayload_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+  gstbasertpdepayload_class = (GstBaseRTPDepayloadClass *) klass;
+
+  gstbasertpdepayload_class->process = gst_rtp_siren_depay_process;
+  gstbasertpdepayload_class->set_caps = gst_rtp_siren_depay_setcaps;
+}
+
+static void
+gst_rtp_siren_depay_init (GstRTPSirenDepay * rtpsirendepay,
+    GstRTPSirenDepayClass * klass)
+{
+
+}
+
+static gboolean
+gst_rtp_siren_depay_setcaps (GstBaseRTPDepayload * depayload, GstCaps * caps)
+{
+  GstCaps *srccaps;
+  gboolean ret;
+
+  srccaps = gst_caps_new_simple ("audio/x-siren",
+      "dct-length", G_TYPE_INT, 320, NULL);
+  ret = gst_pad_set_caps (GST_BASE_RTP_DEPAYLOAD_SRCPAD (depayload), srccaps);
+
+  GST_DEBUG ("set caps on source: %" GST_PTR_FORMAT " (ret=%d)", srccaps, ret);
+  gst_caps_unref (srccaps);
+
+  /* always fixed clock rate of 16000 */
+  depayload->clock_rate = 16000;
+
+  return ret;
+}
+
+static GstBuffer *
+gst_rtp_siren_depay_process (GstBaseRTPDepayload * depayload, GstBuffer * buf)
+{
+  GstBuffer *outbuf;
+
+  g_print ("process : got %d bytes, mark %d ts %u seqn %d, header len %d, payload len %d\n",
+      GST_BUFFER_SIZE (buf),
+      gst_rtp_buffer_get_marker (buf),
+      gst_rtp_buffer_get_timestamp (buf),
+      gst_rtp_buffer_get_seq (buf),
+      gst_rtp_buffer_get_header_len (buf),
+      gst_rtp_buffer_get_payload_len (buf));
+
+  outbuf = gst_rtp_buffer_get_payload_buffer (buf);
+
+  return outbuf;
+}
+
+gboolean
+gst_rtp_siren_depay_plugin_init (GstPlugin * plugin)
+{
+  return gst_element_register (plugin, "rtpsirendepay",
+      GST_RANK_MARGINAL, GST_TYPE_RTP_SIREN_DEPAY);
+}