Complete the move of the RTP plugin

Original commit message from CVS:
Complete the move of the RTP plugin

1 files changed, 326 insertions, 0 deletions

diff --git a/gst/rtp/gstrtpL16pay.c b/gst/rtp/gstrtpL16pay.c
new file mode 100644
index 00000000..1e71e2a0
--- /dev/null
+++ b/gst/rtp/gstrtpL16pay.c
@@ -0,0 +1,326 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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.
+ */
+
+#include <string.h>
+#include "gstrtpL16enc.h"
+
+/* elementfactory information */
+static GstElementDetails gst_rtpL16enc_details = {
+  "RTP RAW Audio Encoder",
+  "RtpL16Enc",
+  "LGPL",
+  "Encodes Raw Audio into an RTP packet",
+  VERSION,
+  "Zeeshan Ali <zak147@yahoo.com>",
+  "(C) 2003",
+};
+
+/* RtpL16Enc signals and args */
+enum
+{
+  /* FILL ME */
+  LAST_SIGNAL
+};
+
+enum
+{
+  /* FILL ME */
+  ARG_0,
+};
+
+GST_PAD_TEMPLATE_FACTORY (sink_factory,
+		"sink",
+		GST_PAD_SINK,
+	        GST_PAD_ALWAYS,
+		GST_CAPS_NEW (
+			"audio_raw",
+			"audio/raw",
+			"format",	GST_PROPS_STRING ("int"),
+			"law", 		GST_PROPS_INT (0),
+			"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 (1000, 48000),
+			"channels", 	GST_PROPS_INT_RANGE (1, 2)
+		)
+);
+
+GST_PAD_TEMPLATE_FACTORY (src_factory,
+		"src",
+		GST_PAD_SRC,
+	        GST_PAD_ALWAYS,
+		GST_CAPS_NEW (
+			"rtp",
+			"application/x-rtp",
+			NULL)
+);
+
+static void gst_rtpL16enc_class_init (GstRtpL16EncClass * klass);
+static void gst_rtpL16enc_init (GstRtpL16Enc * rtpL16enc);
+static void gst_rtpL16enc_chain (GstPad * pad, GstBuffer * buf);
+static void gst_rtpL16enc_set_property (GObject * object, guint prop_id,
+				   const GValue * value, GParamSpec * pspec);
+static void gst_rtpL16enc_get_property (GObject * object, guint prop_id,
+				   GValue * value, GParamSpec * pspec);
+static GstPadLinkReturn gst_rtpL16enc_sinkconnect (GstPad * pad, GstCaps * caps);
+static GstElementStateReturn gst_rtpL16enc_change_state (GstElement * element);
+
+static GstElementClass *parent_class = NULL;
+
+static GType gst_rtpL16enc_get_type (void)
+{
+  static GType rtpL16enc_type = 0;
+
+  if (!rtpL16enc_type) {
+    static const GTypeInfo rtpL16enc_info = {
+      sizeof (GstRtpL16EncClass),
+      NULL,
+      NULL,
+      (GClassInitFunc) gst_rtpL16enc_class_init,
+      NULL,
+      NULL,
+      sizeof (GstRtpL16Enc),
+      0,
+      (GInstanceInitFunc) gst_rtpL16enc_init,
+    };
+
+    rtpL16enc_type = g_type_register_static (GST_TYPE_ELEMENT, "GstRtpL16Enc", &rtpL16enc_info, 0);
+  }
+  return rtpL16enc_type;
+}
+
+static void
+gst_rtpL16enc_class_init (GstRtpL16EncClass * 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->set_property = gst_rtpL16enc_set_property;
+  gobject_class->get_property = gst_rtpL16enc_get_property;
+
+  gstelement_class->change_state = gst_rtpL16enc_change_state;
+}
+
+static void
+gst_rtpL16enc_init (GstRtpL16Enc * rtpL16enc)
+{
+  rtpL16enc->sinkpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (sink_factory), "sink");
+  rtpL16enc->srcpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (src_factory), "src");
+  gst_element_add_pad (GST_ELEMENT (rtpL16enc), rtpL16enc->sinkpad);
+  gst_element_add_pad (GST_ELEMENT (rtpL16enc), rtpL16enc->srcpad);
+  gst_pad_set_chain_function (rtpL16enc->sinkpad, gst_rtpL16enc_chain);
+  gst_pad_set_link_function (rtpL16enc->sinkpad, gst_rtpL16enc_sinkconnect);
+
+  rtpL16enc->frequency = 44100;
+  rtpL16enc->channels = 2;
+
+  rtpL16enc->next_time = 0; 
+  rtpL16enc->time_interval = 0;
+
+  rtpL16enc->seq = 0;
+  rtpL16enc->ssrc = random ();
+}
+
+static GstPadLinkReturn
+gst_rtpL16enc_sinkconnect (GstPad * pad, GstCaps * caps)
+{
+  GstRtpL16Enc *rtpL16enc;
+
+  rtpL16enc = GST_RTP_L16_ENC (gst_pad_get_parent (pad));
+
+  gst_caps_get_int (caps, "rate", &rtpL16enc->frequency);
+  gst_caps_get_int (caps, "channels", &rtpL16enc->channels);
+
+  /* Pre-calculate what we can */
+  rtpL16enc->time_interval = GST_SECOND / (2 * rtpL16enc->channels * rtpL16enc->frequency);
+
+  return GST_PAD_LINK_OK;
+}
+
+
+void
+gst_rtpL16enc_htons (GstBuffer *buf)
+{
+  guint16 *i, *len;
+
+  /* FIXME: is this code correct or even sane at all? */
+  i = (guint16 *) GST_BUFFER_DATA(buf); 
+  len = i + GST_BUFFER_SIZE (buf) / sizeof (guint16 *);
+
+  for (; i<len; i++) {
+      *i = g_htons (*i);
+  }
+}
+
+static void
+gst_rtpL16enc_chain (GstPad * pad, GstBuffer * buf)
+{
+  GstRtpL16Enc *rtpL16enc;
+  GstBuffer *outbuf;
+  Rtp_Packet packet;
+
+  g_return_if_fail (pad != NULL);
+  g_return_if_fail (GST_IS_PAD (pad));
+  g_return_if_fail (buf != NULL);
+
+  rtpL16enc = GST_RTP_L16_ENC (GST_OBJECT_PARENT (pad));
+
+  g_return_if_fail (rtpL16enc != NULL);
+  g_return_if_fail (GST_IS_RTP_L16_ENC (rtpL16enc));
+
+  if (GST_IS_EVENT (buf)) {
+    GstEvent *event = GST_EVENT (buf);
+
+    switch (GST_EVENT_TYPE (event)) {
+      case GST_EVENT_DISCONTINUOUS:
+	GST_DEBUG (GST_CAT_EVENT, "discont"); 
+        rtpL16enc->next_time = 0;
+        gst_pad_event_default (pad, event);
+	return;
+      default:
+        gst_pad_event_default (pad, event);
+	return;
+    }
+  }
+
+  /* We only need the header */
+  packet = rtp_packet_new_allocate (0, 0, 0);
+
+  rtp_packet_set_csrc_count (packet, 0);
+  rtp_packet_set_extension (packet, 0);
+  rtp_packet_set_padding (packet, 0);
+  rtp_packet_set_version (packet, RTP_VERSION);
+  rtp_packet_set_marker (packet, 0);
+  rtp_packet_set_ssrc (packet, g_htonl (rtpL16enc->ssrc));
+  rtp_packet_set_seq (packet, g_htons (rtpL16enc->seq));
+  rtp_packet_set_timestamp (packet, g_htonl ((guint32) rtpL16enc->next_time / GST_SECOND));
+
+  if (rtpL16enc->channels == 1) {
+     rtp_packet_set_payload_type (packet, (guint8) PAYLOAD_L16_MONO);
+  }
+
+  else {
+     rtp_packet_set_payload_type (packet, (guint8) PAYLOAD_L16_STEREO);
+  }
+
+  /* FIXME: According to RFC 1890, this is required, right? */
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+     gst_rtpL16enc_htons (buf);
+#endif
+
+  outbuf = gst_buffer_new ();
+  GST_BUFFER_SIZE (outbuf) = rtp_packet_get_packet_len (packet) + GST_BUFFER_SIZE (buf);
+  GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf));
+  GST_BUFFER_TIMESTAMP (outbuf) = rtpL16enc->next_time;
+
+  memcpy (GST_BUFFER_DATA (outbuf), packet->data, rtp_packet_get_packet_len (packet));
+  memcpy (GST_BUFFER_DATA (outbuf) + rtp_packet_get_packet_len(packet), GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
+
+  GST_DEBUG (0,"gst_rtpL16enc_chain: pushing buffer of size %d", GST_BUFFER_SIZE(outbuf));
+  gst_pad_push (rtpL16enc->srcpad, outbuf);
+
+  ++rtpL16enc->seq;
+  rtpL16enc->next_time += rtpL16enc->time_interval * GST_BUFFER_SIZE (buf);
+  
+  rtp_packet_free (packet);
+  gst_buffer_unref (buf);
+}
+
+static void
+gst_rtpL16enc_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+  GstRtpL16Enc *rtpL16enc;
+
+  /* it's not null if we got it, but it might not be ours */
+  g_return_if_fail (GST_IS_RTP_L16_ENC (object));
+  rtpL16enc = GST_RTP_L16_ENC (object);
+
+  switch (prop_id) {
+    default:
+      break;
+  }
+}
+
+static void
+gst_rtpL16enc_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
+{
+  GstRtpL16Enc *rtpL16enc;
+
+  /* it's not null if we got it, but it might not be ours */
+  g_return_if_fail (GST_IS_RTP_L16_ENC (object));
+  rtpL16enc = GST_RTP_L16_ENC (object);
+
+  switch (prop_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static GstElementStateReturn
+gst_rtpL16enc_change_state (GstElement * element)
+{
+  GstRtpL16Enc *rtpL16enc;
+
+  g_return_val_if_fail (GST_IS_RTP_L16_ENC (element), GST_STATE_FAILURE);
+
+  rtpL16enc = GST_RTP_L16_ENC (element);
+
+  GST_DEBUG (0, "state pending %d\n", GST_STATE_PENDING (element));
+
+  /* if going down into NULL state, close the file if it's open */
+  switch (GST_STATE_TRANSITION (element)) {
+    case GST_STATE_NULL_TO_READY:
+      break;
+
+    case GST_STATE_READY_TO_NULL:
+      break;
+
+    default:
+      break;
+  }
+
+  /* if we haven't failed already, give the parent class a chance to ;-) */
+  if (GST_ELEMENT_CLASS (parent_class)->change_state)
+    return GST_ELEMENT_CLASS (parent_class)->change_state (element);
+
+  return GST_STATE_SUCCESS;
+}
+
+gboolean
+gst_rtpL16enc_plugin_init (GModule * module, GstPlugin * plugin)
+{
+  GstElementFactory *rtpL16enc;
+
+  rtpL16enc = gst_element_factory_new ("rtpL16enc", GST_TYPE_RTP_L16_ENC, &gst_rtpL16enc_details);
+  g_return_val_if_fail (rtpL16enc != NULL, FALSE);
+
+  gst_element_factory_add_pad_template (rtpL16enc, GST_PAD_TEMPLATE_GET (sink_factory));
+  gst_element_factory_add_pad_template (rtpL16enc, GST_PAD_TEMPLATE_GET (src_factory));
+
+  gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (rtpL16enc));
+
+  return TRUE;
+}