gst/rtp/: Added two new payloaders, an RFC 2190 payloader for h263 and a payload convertor for an asterisk server.

Original commit message from CVS:
* gst/rtp/Makefile.am:
* gst/rtp/gstasteriskh263.c: (gst_asteriskh263_get_type),
(gst_asteriskh263_base_init), (gst_asteriskh263_class_init),
(gst_asteriskh263_init), (gst_asteriskh263_finalize),
(gst_asteriskh263_chain), (gst_asteriskh263_set_property),
(gst_asteriskh263_get_property), (gst_asteriskh263_change_state),
(gst_asteriskh263_plugin_init):
* gst/rtp/gstasteriskh263.h:
* gst/rtp/gstrtp.c: (plugin_init):
* gst/rtp/gstrtph263enc.c: (gst_rtph263enc_get_type),
(gst_rtph263enc_base_init), (gst_rtph263enc_class_init),
(gst_rtph263enc_init), (gst_rtph263enc_finalize),
(gst_rtph263enc_setcaps), (gst_rtph263enc_gobfiner),
(gst_rtph263enc_flush), (gst_rtph263enc_handle_buffer),
(gst_rtph263enc_plugin_init):
* gst/rtp/gstrtph263enc.h:
Added two new payloaders, an RFC 2190 payloader for h263 and
a payload convertor for an asterisk server.

1 files changed, 306 insertions, 0 deletions

diff --git a/gst/rtp/gstasteriskh263.c b/gst/rtp/gstasteriskh263.c
new file mode 100644
index 00000000..2c27e15e
--- /dev/null
+++ b/gst/rtp/gstasteriskh263.c
@@ -0,0 +1,306 @@
+/* GStreamer
+ * Copyright (C) <2005> Wim Taymans <wim@fluendo.com>
+ *
+ * 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
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include <string.h>
+#include <netinet/in.h>
+
+#include <gst/rtp/gstrtpbuffer.h>
+#include "gstasteriskh263.h"
+
+#define GST_ASTERISKH263_HEADER_LEN 6
+
+typedef struct _GstAsteriskH263Header
+{
+  guint32 timestamp;            /* Timestamp */
+  guint16 length;               /* Length */
+} GstAsteriskH263Header;
+
+#define GST_ASTERISKH263_HEADER_TIMESTAMP(buf) (((GstAsteriskH263Header *)(GST_BUFFER_DATA (buf)))->timestamp)
+#define GST_ASTERISKH263_HEADER_LENGTH(buf) (((GstAsteriskH263Header *)(GST_BUFFER_DATA (buf)))->length)
+
+/* elementfactory information */
+static GstElementDetails gst_rtp_h263pdec_details = {
+  "RTP packet parser",
+  "Codec/Parser/Network",
+  "Extracts H263 video from RTP and encodes in Asterisk H263 format",
+  "Neil Stratford <neils@vipadia.com>"
+};
+
+/* Asteriskh263 signals and args */
+enum
+{
+  /* FILL ME */
+  LAST_SIGNAL
+};
+
+enum
+{
+  ARG_0,
+  ARG_FREQUENCY
+};
+
+static GstStaticPadTemplate gst_asteriskh263_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("application/x-asteriskh263")
+    );
+
+static GstStaticPadTemplate gst_asteriskh263_sink_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("application/x-rtp, "
+        "media = (string) \"video\", "
+        "payload = (int) [ 96, 255 ], "
+        "clock-rate = (int) 90000, " "encoding-name = (string) \"H263-1998\"")
+    );
+
+static void gst_asteriskh263_class_init (GstAsteriskh263Class * klass);
+static void gst_asteriskh263_base_init (GstAsteriskh263Class * klass);
+static void gst_asteriskh263_init (GstAsteriskh263 * asteriskh263);
+static void gst_asteriskh263_finalize (GObject * object);
+
+static GstFlowReturn gst_asteriskh263_chain (GstPad * pad, GstBuffer * buffer);
+
+static void gst_asteriskh263_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void gst_asteriskh263_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+static GstStateChangeReturn gst_asteriskh263_change_state (GstElement *
+    element, GstStateChange transition);
+
+static GstElementClass *parent_class = NULL;
+
+static GType
+gst_asteriskh263_get_type (void)
+{
+  static GType asteriskh263_type = 0;
+
+  if (!asteriskh263_type) {
+    static const GTypeInfo asteriskh263_info = {
+      sizeof (GstAsteriskh263Class),
+      (GBaseInitFunc) gst_asteriskh263_base_init,
+      NULL,
+      (GClassInitFunc) gst_asteriskh263_class_init,
+      NULL,
+      NULL,
+      sizeof (GstAsteriskh263),
+      0,
+      (GInstanceInitFunc) gst_asteriskh263_init,
+    };
+
+    asteriskh263_type =
+        g_type_register_static (GST_TYPE_ELEMENT, "GstAsteriskh263",
+        &asteriskh263_info, 0);
+  }
+  return asteriskh263_type;
+}
+
+static void
+gst_asteriskh263_base_init (GstAsteriskh263Class * klass)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&gst_asteriskh263_src_template));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&gst_asteriskh263_sink_template));
+
+  gst_element_class_set_details (element_class, &gst_rtp_h263pdec_details);
+}
+
+static void
+gst_asteriskh263_class_init (GstAsteriskh263Class * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+
+  parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+  gobject_class->finalize = gst_asteriskh263_finalize;
+
+  gobject_class->set_property = gst_asteriskh263_set_property;
+  gobject_class->get_property = gst_asteriskh263_get_property;
+
+  gstelement_class->change_state = gst_asteriskh263_change_state;
+}
+
+static void
+gst_asteriskh263_init (GstAsteriskh263 * asteriskh263)
+{
+  asteriskh263->srcpad =
+      gst_pad_new_from_template (gst_static_pad_template_get
+      (&gst_asteriskh263_src_template), "src");
+  gst_element_add_pad (GST_ELEMENT (asteriskh263), asteriskh263->srcpad);
+
+  asteriskh263->sinkpad =
+      gst_pad_new_from_template (gst_static_pad_template_get
+      (&gst_asteriskh263_sink_template), "sink");
+  gst_pad_set_chain_function (asteriskh263->sinkpad, gst_asteriskh263_chain);
+  gst_element_add_pad (GST_ELEMENT (asteriskh263), asteriskh263->sinkpad);
+
+  asteriskh263->adapter = gst_adapter_new ();
+}
+
+static void
+gst_asteriskh263_finalize (GObject * object)
+{
+  GstAsteriskh263 *asteriskh263;
+
+  asteriskh263 = GST_ASTERISK_H263 (object);
+
+  g_object_unref (asteriskh263->adapter);
+  asteriskh263->adapter = NULL;
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static GstFlowReturn
+gst_asteriskh263_chain (GstPad * pad, GstBuffer * buf)
+{
+  GstAsteriskh263 *asteriskh263;
+  GstBuffer *outbuf;
+  GstFlowReturn ret;
+
+  asteriskh263 = GST_ASTERISK_H263 (GST_OBJECT_PARENT (pad));
+
+  if (!gst_rtpbuffer_validate (buf))
+    goto bad_packet;
+
+  {
+    gint payload_len;
+    guint8 *payload;
+    gboolean M;
+    guint32 timestamp;
+    guint32 samples;
+    guint16 asterisk_len;
+
+    payload_len = gst_rtpbuffer_get_payload_len (buf);
+    payload = gst_rtpbuffer_get_payload (buf);
+
+    M = gst_rtpbuffer_get_marker (buf);
+    timestamp = gst_rtpbuffer_get_timestamp (buf);
+
+    outbuf = gst_buffer_new_and_alloc (payload_len +
+        GST_ASTERISKH263_HEADER_LEN);
+
+    /* build the asterisk header */
+    asterisk_len = payload_len;
+    if (M)
+      asterisk_len |= 0x8000;
+    if (!asteriskh263->lastts)
+      asteriskh263->lastts = timestamp;
+    samples = timestamp - asteriskh263->lastts;
+    asteriskh263->lastts = timestamp;
+
+    GST_ASTERISKH263_HEADER_TIMESTAMP (outbuf) = htonl (samples);
+    GST_ASTERISKH263_HEADER_LENGTH (outbuf) = htons (asterisk_len);
+
+    /* copy the data into place */
+    memcpy (GST_BUFFER_DATA (outbuf) + GST_ASTERISKH263_HEADER_LEN, payload,
+        payload_len);
+
+    GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
+    gst_buffer_set_caps (outbuf,
+        (GstCaps *) gst_pad_get_pad_template_caps (asteriskh263->srcpad));
+
+    ret = gst_pad_push (asteriskh263->srcpad, outbuf);
+
+    gst_buffer_unref (buf);
+  }
+
+  return ret;
+
+bad_packet:
+  {
+    GST_DEBUG ("Packet does not validate");
+    gst_buffer_unref (buf);
+    return GST_FLOW_ERROR;
+  }
+}
+
+static void
+gst_asteriskh263_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstAsteriskh263 *asteriskh263;
+
+  asteriskh263 = GST_ASTERISK_H263 (object);
+
+  switch (prop_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_asteriskh263_get_property (GObject * object, guint prop_id, GValue * value,
+    GParamSpec * pspec)
+{
+  GstAsteriskh263 *asteriskh263;
+
+  asteriskh263 = GST_ASTERISK_H263 (object);
+
+  switch (prop_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static GstStateChangeReturn
+gst_asteriskh263_change_state (GstElement * element, GstStateChange transition)
+{
+  GstAsteriskh263 *asteriskh263;
+  GstStateChangeReturn ret;
+
+  asteriskh263 = GST_ASTERISK_H263 (element);
+
+  switch (transition) {
+    case GST_STATE_CHANGE_NULL_TO_READY:
+      break;
+    case GST_STATE_CHANGE_READY_TO_PAUSED:
+      gst_adapter_clear (asteriskh263->adapter);
+      break;
+    default:
+      break;
+  }
+
+  ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+  switch (transition) {
+    case GST_STATE_CHANGE_READY_TO_NULL:
+      break;
+    default:
+      break;
+  }
+  return ret;
+}
+
+gboolean
+gst_asteriskh263_plugin_init (GstPlugin * plugin)
+{
+  return gst_element_register (plugin, "asteriskh263",
+      GST_RANK_NONE, GST_TYPE_ASTERISK_H263);
+}