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, 380 insertions, 0 deletions

diff --git a/gst/rtp/gstrtph263pay.c b/gst/rtp/gstrtph263pay.c
new file mode 100644
index 00000000..c2caa06f
--- /dev/null
+++ b/gst/rtp/gstrtph263pay.c
@@ -0,0 +1,380 @@
+/* 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 <gst/rtp/gstrtpbuffer.h>
+
+#include "gstrtph263enc.h"
+
+#define GST_RFC2190A_HEADER_LEN 4
+
+typedef struct _GstRFC2190AHeader
+{
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+  unsigned int ebit:3;          /* End position */
+  unsigned int sbit:3;          /* Start position */
+  unsigned int p:1;             /* PB-frames mode */
+  unsigned int f:1;             /* flag bit */
+
+  unsigned int r1:1;            /* Reserved */
+  unsigned int a:1;             /* Advanced Prediction */
+  unsigned int s:1;             /* syntax based arithmetic coding */
+  unsigned int u:1;             /* Unrestricted motion vector */
+  unsigned int i:1;             /* Picture coding type */
+  unsigned int src:3;           /* Source format */
+
+  unsigned int trb:3;           /* Temporal ref for B frame */
+  unsigned int dbq:2;           /* Differential Quantisation parameter */
+  unsigned int r2:3;            /* Reserved */
+#elif G_BYTE_ORDER == G_BIG_ENDIAN
+  unsigned int f:1;             /* flag bit */
+  unsigned int p:1;             /* PB-frames mode */
+  unsigned int sbit:3;          /* Start position */
+  unsigned int ebit:3;          /* End position */
+
+  unsigned int src:3;           /* Source format */
+  unsigned int i:1;             /* Picture coding type */
+  unsigned int u:1;             /* Unrestricted motion vector */
+  unsigned int s:1;             /* syntax based arithmetic coding */
+  unsigned int a:1;             /* Advanced Prediction */
+  unsigned int r1:1;            /* Reserved */
+
+  unsigned int r2:3;            /* Reserved */
+  unsigned int dbq:2;           /* Differential Quantisation parameter */
+  unsigned int trb:3;           /* Temporal ref for B frame */
+#else
+#error "G_BYTE_ORDER should be big or little endian."
+#endif
+  guint8 tr;                    /* Temporal ref for P frame */
+} GstRFC2190AHeader;
+
+
+#define GST_RFC2190A_HEADER_F(buf) (((GstRFC2190AHeader *)(buf))->f)
+#define GST_RFC2190A_HEADER_P(buf) (((GstRFC2190AHeader *)(buf))->p)
+#define GST_RFC2190A_HEADER_SBIT(buf) (((GstRFC2190AHeader *)(buf))->sbit)
+#define GST_RFC2190A_HEADER_EBIT(buf) (((GstRFC2190AHeader *)(buf))->ebit)
+#define GST_RFC2190A_HEADER_SRC(buf) (((GstRFC2190AHeader *)(buf))->src)
+#define GST_RFC2190A_HEADER_I(buf) (((GstRFC2190AHeader *)(buf))->i)
+#define GST_RFC2190A_HEADER_U(buf) (((GstRFC2190AHeader *)(buf))->u)
+#define GST_RFC2190A_HEADER_S(buf) (((GstRFC2190AHeader *)(buf))->s)
+#define GST_RFC2190A_HEADER_A(buf) (((GstRFC2190AHeader *)(buf))->a)
+#define GST_RFC2190A_HEADER_R1(buf) (((GstRFC2190AHeader *)(buf))->r1)
+#define GST_RFC2190A_HEADER_R2(buf) (((GstRFC2190AHeader *)(buf))->r2)
+#define GST_RFC2190A_HEADER_DBQ(buf) (((GstRFC2190AHeader *)(buf))->dbq)
+#define GST_RFC2190A_HEADER_TRB(buf) (((GstRFC2190AHeader *)(buf))->trb)
+#define GST_RFC2190A_HEADER_TR(buf) (((GstRFC2190AHeader *)(buf))->tr)
+
+
+typedef struct _GstH263PictureLayer
+{
+#if G_BYTE_ORDER == G_LITTLE_ENDIAN
+  unsigned int psc1:16;
+
+  unsigned int tr1:2;
+  unsigned int psc2:6;
+
+  unsigned int ptype_263:1;
+  unsigned int ptype_start:1;
+  unsigned int tr2:6;
+
+  unsigned int ptype_umvmode:1;
+  unsigned int ptype_pictype:1;
+  unsigned int ptype_srcformat:3;
+  unsigned int ptype_freeze:1;
+  unsigned int ptype_camera:1;
+  unsigned int ptype_split:1;
+
+  unsigned int chaff:5;
+  unsigned int ptype_pbmode:1;
+  unsigned int ptype_apmode:1;
+  unsigned int ptype_sacmode:1;
+#elif G_BYTE_ORDER == G_BIG_ENDIAN
+  unsigned int psc1:16;
+
+  unsigned int psc2:6;
+  unsigned int tr1:2;
+
+  unsigned int tr2:6;
+  unsigned int ptype_start:1;
+  unsigned int ptype_263:1;
+
+  unsigned int ptype_split:1;
+  unsigned int ptype_camera:1;
+  unsigned int ptype_freeze:1;
+  unsigned int ptype_srcformat:3;
+  unsigned int ptype_pictype:1;
+  unsigned int ptype_umvmode:1;
+
+  unsigned int ptype_sacmode:1;
+  unsigned int ptype_apmode:1;
+  unsigned int ptype_pbmode:1;
+  unsigned int chaff:5;
+#else
+#error "G_BYTE_ORDER should be big or little endian."
+#endif
+} GstH263PictureLayer;
+
+#define GST_H263_PICTURELAYER_PLSRC(buf) (((GstH263PictureLayer *)(buf))->ptype_srcformat)
+#define GST_H263_PICTURELAYER_PLTYPE(buf) (((GstH263PictureLayer *)(buf))->ptype_pictype)
+#define GST_H263_PICTURELAYER_PLUMV(buf) (((GstH263PictureLayer *)(buf))->ptype_umvmode)
+#define GST_H263_PICTURELAYER_PLSAC(buf) (((GstH263PictureLayer *)(buf))->ptype_sacmode)
+#define GST_H263_PICTURELAYER_PLAP(buf) (((GstH263PictureLayer *)(buf))->ptype_apmode)
+
+
+
+/* elementfactory information */
+static GstElementDetails gst_rtp_h263enc_details = {
+  "RTP packet parser",
+  "Codec/Encoder/Network",
+  "Encodes H263 video in RTP packets (RFC 2190)",
+  "Neil Stratford <neils@vipadia.com>"
+};
+
+static GstStaticPadTemplate gst_rtph263enc_sink_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/x-h263")
+    );
+
+static GstStaticPadTemplate gst_rtph263enc_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    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_rtph263enc_class_init (GstRtpH263EncClass * klass);
+static void gst_rtph263enc_base_init (GstRtpH263EncClass * klass);
+static void gst_rtph263enc_init (GstRtpH263Enc * rtph263enc);
+static void gst_rtph263enc_finalize (GObject * object);
+
+static gboolean gst_rtph263enc_setcaps (GstBaseRTPPayload * payload,
+    GstCaps * caps);
+static GstFlowReturn gst_rtph263enc_handle_buffer (GstBaseRTPPayload * payload,
+    GstBuffer * buffer);
+
+static GstBaseRTPPayloadClass *parent_class = NULL;
+
+static GType
+gst_rtph263enc_get_type (void)
+{
+  static GType rtph263enc_type = 0;
+
+  if (!rtph263enc_type) {
+    static const GTypeInfo rtph263enc_info = {
+      sizeof (GstRtpH263EncClass),
+      (GBaseInitFunc) gst_rtph263enc_base_init,
+      NULL,
+      (GClassInitFunc) gst_rtph263enc_class_init,
+      NULL,
+      NULL,
+      sizeof (GstRtpH263Enc),
+      0,
+      (GInstanceInitFunc) gst_rtph263enc_init,
+    };
+
+    rtph263enc_type =
+        g_type_register_static (GST_TYPE_BASE_RTP_PAYLOAD, "GstRtpH263Enc",
+        &rtph263enc_info, 0);
+  }
+  return rtph263enc_type;
+}
+
+static void
+gst_rtph263enc_base_init (GstRtpH263EncClass * klass)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&gst_rtph263enc_src_template));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&gst_rtph263enc_sink_template));
+
+  gst_element_class_set_details (element_class, &gst_rtp_h263enc_details);
+}
+
+static void
+gst_rtph263enc_class_init (GstRtpH263EncClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+  GstBaseRTPPayloadClass *gstbasertppayload_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+  gstbasertppayload_class = (GstBaseRTPPayloadClass *) klass;
+
+  parent_class = g_type_class_ref (GST_TYPE_BASE_RTP_PAYLOAD);
+
+  gobject_class->finalize = gst_rtph263enc_finalize;
+
+  gstbasertppayload_class->set_caps = gst_rtph263enc_setcaps;
+  gstbasertppayload_class->handle_buffer = gst_rtph263enc_handle_buffer;
+}
+
+static void
+gst_rtph263enc_init (GstRtpH263Enc * rtph263enc)
+{
+  rtph263enc->adapter = gst_adapter_new ();
+}
+
+static void
+gst_rtph263enc_finalize (GObject * object)
+{
+  GstRtpH263Enc *rtph263enc;
+
+  rtph263enc = GST_RTP_H263_ENC (object);
+
+  g_object_unref (rtph263enc->adapter);
+  rtph263enc->adapter = NULL;
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static gboolean
+gst_rtph263enc_setcaps (GstBaseRTPPayload * payload, GstCaps * caps)
+{
+  gst_basertppayload_set_options (payload, "video", TRUE, "H263-1998", 90000);
+  gst_basertppayload_set_outcaps (payload, NULL);
+
+  return TRUE;
+}
+
+static guint
+gst_rtph263enc_gobfiner (guint8 * data, guint len, guint curpos)
+{
+  guint16 test = 0xffff;
+  guint i;
+
+  /* If we are past the end, stop */
+  if (curpos >= len)
+    return 0;
+
+  /* start at curpos and loop looking for next gob start */
+  for (i = curpos; i < len; i++) {
+    test = (test << 8) | data[i];
+    if ((test == 0) && (i > curpos + 4)) {
+      return i - 3;
+    }
+  }
+  return len;
+}
+
+static GstFlowReturn
+gst_rtph263enc_flush (GstRtpH263Enc * rtph263enc)
+{
+  guint avail;
+  GstBuffer *outbuf;
+  GstFlowReturn ret = 0;
+  gboolean fragmented;
+  guint8 *data, *header;
+  GstH263PictureLayer *piclayer;
+  guint8 *payload;
+  guint payload_len, total_len;
+  guint curpos, nextgobpos;
+
+  avail = gst_adapter_available (rtph263enc->adapter);
+  if (avail == 0)
+    return GST_FLOW_OK;
+
+  fragmented = FALSE;
+
+  /* Get a pointer to all the data for the frame */
+  data = (guint8 *) gst_adapter_peek (rtph263enc->adapter, avail);
+
+  /* Start at the begining and loop looking for gobs */
+  curpos = 0;
+
+  /* Picture header */
+  piclayer = (GstH263PictureLayer *) data;
+
+  while ((nextgobpos = gst_rtph263enc_gobfiner (data, avail, curpos)) > 0) {
+
+    payload_len = nextgobpos - curpos;
+    total_len = payload_len + GST_RFC2190A_HEADER_LEN;
+
+    outbuf = gst_rtpbuffer_new_allocate (total_len, 0, 0);
+
+    header = gst_rtpbuffer_get_payload (outbuf);
+    payload = header + GST_RFC2190A_HEADER_LEN;
+
+    /* Build the headers */
+    GST_RFC2190A_HEADER_F (header) = 0;
+    GST_RFC2190A_HEADER_P (header) = 0;
+    GST_RFC2190A_HEADER_SBIT (header) = 0;
+    GST_RFC2190A_HEADER_EBIT (header) = 0;
+
+    GST_RFC2190A_HEADER_SRC (header) = GST_H263_PICTURELAYER_PLSRC (piclayer);
+    GST_RFC2190A_HEADER_I (header) = GST_H263_PICTURELAYER_PLTYPE (piclayer);
+    GST_RFC2190A_HEADER_U (header) = GST_H263_PICTURELAYER_PLUMV (piclayer);
+    GST_RFC2190A_HEADER_S (header) = GST_H263_PICTURELAYER_PLSAC (piclayer);
+    GST_RFC2190A_HEADER_A (header) = GST_H263_PICTURELAYER_PLAP (piclayer);
+    GST_RFC2190A_HEADER_R1 (header) = 0;
+    GST_RFC2190A_HEADER_R2 (header) = 0;
+    GST_RFC2190A_HEADER_DBQ (header) = 0;
+    GST_RFC2190A_HEADER_TRB (header) = 0;
+    GST_RFC2190A_HEADER_TR (header) = 0;
+
+    /* last fragment gets the marker bit set */
+    gst_rtpbuffer_set_marker (outbuf, nextgobpos < avail ? 0 : 1);
+
+    memcpy (payload, data + curpos, payload_len);
+
+    GST_BUFFER_TIMESTAMP (outbuf) = rtph263enc->first_ts;
+
+    ret = gst_basertppayload_push (GST_BASE_RTP_PAYLOAD (rtph263enc), outbuf);
+
+    curpos = nextgobpos;
+  }
+
+  /* Flush the whole packet */
+  gst_adapter_flush (rtph263enc->adapter, avail);
+
+  return ret;
+}
+
+static GstFlowReturn
+gst_rtph263enc_handle_buffer (GstBaseRTPPayload * payload, GstBuffer * buffer)
+{
+  GstRtpH263Enc *rtph263enc;
+  GstFlowReturn ret;
+  guint size;
+
+  rtph263enc = GST_RTP_H263_ENC (payload);
+
+  size = GST_BUFFER_SIZE (buffer);
+  rtph263enc->first_ts = GST_BUFFER_TIMESTAMP (buffer);
+
+  /* we always encode and flush a full picture */
+  gst_adapter_push (rtph263enc->adapter, buffer);
+  ret = gst_rtph263enc_flush (rtph263enc);
+
+  return ret;
+}
+
+gboolean
+gst_rtph263enc_plugin_init (GstPlugin * plugin)
+{
+  return gst_element_register (plugin, "rtph263enc",
+      GST_RANK_NONE, GST_TYPE_RTP_H263_ENC);
+}