gst/rtp/: Ported mulaw and alaw payloaders to use new base class

Original commit message from CVS:
2006-04-12 Philippe Kalaf <philippe.kalaf@collabora.co.uk>

* gst/rtp/gstrtppcmapay.c:
* gst/rtp/gstrtppcmapay.h:
* gst/rtp/gstrtppcmupay.c:
* gst/rtp/gstrtppcmupay.h:
Ported mulaw and alaw payloaders to use new base class
* gst/rtp/Makefile.am:
* gst/rtp/gstrtp.c:
* gst/rtp/gstrtpilbcpay.c:
* gst/rtp/gstrtpilbcpay.h:
* gst/rtp/gstrtpilbcdepay.c:
* gst/rtp/gstrtpilbcdepay.h:
Added new iLBC payloader/depayloader. Payloader uses new audio payload base
class.

1 files changed, 222 insertions, 0 deletions

diff --git a/gst/rtp/gstrtpilbcdepay.c b/gst/rtp/gstrtpilbcdepay.c
new file mode 100644
index 00000000..1dd5bdef
--- /dev/null
+++ b/gst/rtp/gstrtpilbcdepay.c
@@ -0,0 +1,222 @@
+/* GStreamer
+ * Copyright (C) <2006> Philippe Khalaf <burger@speedy.org> 
+ *
+ * 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 <gst/rtp/gstrtpbuffer.h>
+#include "gstrtpilbcdepay.h"
+
+/* elementfactory information */
+static GstElementDetails gst_rtp_ilbc_depay_details =
+GST_ELEMENT_DETAILS ("RTP iLBC packet depayloader",
+    "Codec/Depayr/Network",
+    "Extracts iLBC audio from RTP packets",
+    "Philippe Kalaf <philippe.kalaf@collabora.co.uk>");
+
+/* RtpiLBCDepay signals and args */
+enum
+{
+  /* FILL ME */
+  LAST_SIGNAL
+};
+
+enum
+{
+  ARG_0,
+  ARG_MODE
+};
+
+static GstStaticPadTemplate gst_rtp_ilbc_depay_sink_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("application/x-rtp, "
+        "media = (string) \"audio\", "
+        "clock-rate = (int) 8000, "
+        "encoding-name = (string) \"iLBC\", " "mode = (int) { 20, 30 }")
+    );
+
+static GstStaticPadTemplate gst_rtp_ilbc_depay_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("audio/x-iLBC, " "mode = (int) { 20, 30 }")
+    );
+
+static void gst_ilbc_depay_set_property (GObject * object,
+    guint prop_id, const GValue * value, GParamSpec * pspec);
+static void gst_ilbc_depay_get_property (GObject * object,
+    guint prop_id, GValue * value, GParamSpec * pspec);
+
+static GstBuffer *gst_rtp_ilbc_depay_process (GstBaseRTPDepayload * depayload,
+    GstBuffer * buf);
+static gboolean gst_rtp_ilbc_depay_setcaps (GstBaseRTPDepayload * depayload,
+    GstCaps * caps);
+
+GST_BOILERPLATE (GstRTPiLBCDepay, gst_rtp_ilbc_depay, GstBaseRTPDepayload,
+    GST_TYPE_BASE_RTP_DEPAYLOAD);
+
+#define GST_TYPE_ILBC_MODE (gst_ilbc_mode_get_type())
+static GType
+gst_ilbc_mode_get_type (void)
+{
+  static GType ilbc_mode_type = 0;
+  static GEnumValue ilbc_modes[] = {
+    {GST_ILBC_MODE_20, "20ms frames", "20ms"},
+    {GST_ILBC_MODE_30, "30ms frames", "30ms"},
+    {0, NULL, NULL},
+  };
+
+  if (!ilbc_mode_type) {
+    ilbc_mode_type = g_enum_register_static ("iLBCMode", ilbc_modes);
+  }
+  return ilbc_mode_type;
+}
+
+static void
+gst_rtp_ilbc_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_ilbc_depay_src_template));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&gst_rtp_ilbc_depay_sink_template));
+  gst_element_class_set_details (element_class, &gst_rtp_ilbc_depay_details);
+}
+
+static void
+gst_rtp_ilbc_depay_class_init (GstRTPiLBCDepayClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+  GstBaseRTPDepayloadClass *gstbasertpdepayload_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+  gstbasertpdepayload_class = (GstBaseRTPDepayloadClass *) klass;
+
+  gobject_class->set_property = gst_ilbc_depay_set_property;
+  gobject_class->get_property = gst_ilbc_depay_get_property;
+
+  g_object_class_install_property (gobject_class, ARG_MODE, g_param_spec_enum ("mode", "Mode", "iLBC frame mode", GST_TYPE_ILBC_MODE,   /* enum type */
+          GST_ILBC_MODE_30,     /* default value */
+          G_PARAM_READWRITE));
+
+  parent_class = g_type_class_peek_parent (klass);
+
+  gstbasertpdepayload_class->process = gst_rtp_ilbc_depay_process;
+  gstbasertpdepayload_class->set_caps = gst_rtp_ilbc_depay_setcaps;
+}
+
+static void
+gst_rtp_ilbc_depay_init (GstRTPiLBCDepay * rtpilbcdepay,
+    GstRTPiLBCDepayClass * klass)
+{
+  GstBaseRTPDepayload *depayload;
+
+  depayload = GST_BASE_RTP_DEPAYLOAD (rtpilbcdepay);
+
+  depayload->clock_rate = 8000;
+
+  /* Set default mode to 30 */
+  rtpilbcdepay->mode = GST_ILBC_MODE_30;
+}
+
+static gboolean
+gst_rtp_ilbc_depay_setcaps (GstBaseRTPDepayload * depayload, GstCaps * caps)
+{
+  GstRTPiLBCDepay *rtpilbcdepay = GST_RTP_ILBC_DEPAY (depayload);
+  GstCaps *srccaps;
+  GstStructure *structure;
+  gboolean ret;
+
+  srccaps = gst_caps_copy (gst_static_pad_template_get_caps
+      (&gst_rtp_ilbc_depay_src_template));
+  structure = gst_caps_get_structure (srccaps, 0);
+  gst_structure_set (structure, "mode", G_TYPE_INT,
+      rtpilbcdepay->mode == GST_ILBC_MODE_30 ? 30 : 20, NULL);
+  ret = gst_pad_set_caps (GST_BASE_RTP_DEPAYLOAD_SRCPAD (depayload), srccaps);
+  GST_DEBUG ("caps set on source are %s", gst_caps_to_string (srccaps));
+
+  gst_caps_unref (srccaps);
+  return ret;
+}
+
+static GstBuffer *
+gst_rtp_ilbc_depay_process (GstBaseRTPDepayload * depayload, GstBuffer * buf)
+{
+  GstBuffer *outbuf = NULL;
+  gint payload_len;
+  gint header_len;
+
+  GST_DEBUG ("process : got %d bytes, mark %d ts %u seqn %d",
+      GST_BUFFER_SIZE (buf),
+      gst_rtp_buffer_get_marker (buf),
+      gst_rtp_buffer_get_timestamp (buf), gst_rtp_buffer_get_seq (buf));
+
+  payload_len = gst_rtp_buffer_get_payload_len (buf);
+  header_len = gst_rtp_buffer_calc_header_len (0);
+
+  outbuf = gst_buffer_create_sub (buf, header_len, payload_len);
+
+  return outbuf;
+}
+
+static void
+gst_ilbc_depay_set_property (GObject * object,
+    guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+  GstRTPiLBCDepay *rtpilbcdepay = GST_RTP_ILBC_DEPAY (object);
+
+  switch (prop_id) {
+    case ARG_MODE:
+      rtpilbcdepay->mode = g_value_get_enum (value);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_ilbc_depay_get_property (GObject * object,
+    guint prop_id, GValue * value, GParamSpec * pspec)
+{
+  GstRTPiLBCDepay *rtpilbcdepay = GST_RTP_ILBC_DEPAY (object);
+
+  switch (prop_id) {
+    case ARG_MODE:
+      g_value_set_enum (value, rtpilbcdepay->mode);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+gboolean
+gst_rtp_ilbc_depay_plugin_init (GstPlugin * plugin)
+{
+  return gst_element_register (plugin, "rtpilbcdepay",
+      GST_RANK_NONE, GST_TYPE_RTP_ILBC_DEPAY);
+}