--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.hgignore	Mon May 27 09:10:27 2024 +0000
@@ -0,0 +1,4 @@
+syntax: regexp
+
+\.[oa]$
+^config\.defs$

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/build-inc/themwi/rtp	Mon May 27 09:10:27 2024 +0000
@@ -0,0 +1,1 @@
+../../include
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/configure	Mon May 27 09:10:27 2024 +0000
@@ -0,0 +1,88 @@
+#!/bin/sh
+# This configure script is custom and hand-coded;
+# it is NOT a product of GNU Autoconf or any other such tools!
+
+set -e
+
+if [ ! -f configure ]
+then
+	echo "This script needs to be run from the top of the source tree" 1>&2
+	exit 1
+fi
+
+# defaults that can be overridden
+CC=gcc
+CFLAGS=-O2
+prefix=/usr/local
+exec_prefix=
+bindir=
+includedir=
+libdir=
+
+while [ $# != 0 ]
+do
+	case "$1" in
+		--prefix=*)
+			prefix=`echo $1 | cut -c 10-`
+			;;
+		--exec-prefix=*)
+			exec_prefix=`echo $1 | cut -c 15-`
+			;;
+		--bindir=*)
+			bindir=`echo $1 | cut -c 10-`
+			;;
+		--includedir=*)
+			includedir=`echo $1 | cut -c 14-`
+			;;
+		--libdir=*)
+			libdir=`echo $1 | cut -c 10-`
+			;;
+		CC=*)
+			CC=`echo $1 | cut -c 4-`
+			;;
+		CFLAGS=*)
+			CFLAGS=`echo $1 | cut -c 8-`
+			;;
+		*)
+			echo "error: non-understood option $1" 1>&2
+			exit 1;
+			;;
+	esac
+	shift
+done
+
+# inheritance rules for install directories
+
+if [ -z "$exec_prefix" ]
+then
+	exec_prefix="$prefix"
+fi
+if [ -z "$bindir" ]
+then
+	bindir="$exec_prefix/bin"
+fi
+if [ -z "$includedir" ]
+then
+	includedir="$prefix/include"
+fi
+if [ -z "$libdir" ]
+then
+	libdir="$exec_prefix/lib"
+fi
+
+# report the final configuration
+
+echo "C code will be compiled with:"
+echo "  CC=$CC"
+echo "  CFLAGS=$CFLAGS"
+echo "Installation directories:"
+echo "  bindir=$bindir"
+echo "  includedir=$includedir"
+echo "  libdir=$libdir"
+
+# emit the Makefile include fragment
+echo "CC=$CC" > config.defs
+echo "CFLAGS=$CFLAGS" >> config.defs
+echo "bindir=$bindir" >> config.defs
+echo "includedir=$includedir" >> config.defs
+echo "libdir=$libdir" >> config.defs

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/Makefile	Mon May 27 09:10:27 2024 +0000
@@ -0,0 +1,13 @@
+FILES=	pstn_defs.h rtp_alloc.h rtp_defs.h
+
+include ../config.defs
+
+INSTDIR=${DESTDIR}${includedir}/themwi/rtp
+
+all:
+
+install:
+	mkdir -p ${INSTDIR}
+	install -c -m 644 ${FILES} ${INSTDIR}
+
+clean:

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/pstn_defs.h	Mon May 27 09:10:27 2024 +0000
@@ -0,0 +1,8 @@
+/* misc PSTN definitions */
+
+#pragma once
+
+#define	PSTN_CODEC_PCMU		0
+#define	PSTN_CODEC_PCMA		8
+
+#define	FRAME_20MS	160	/* samples per RTP packet */

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/rtp_alloc.h	Mon May 27 09:10:27 2024 +0000
@@ -0,0 +1,31 @@
+/*
+ * This header file defines the ad hoc control interface
+ * to themwi-rtp-mgr over a dedicated local socket.
+ */
+
+#pragma once
+
+struct rtp_alloc_req {
+	uint32_t	transact_ref;
+	uint32_t	ep_type;
+};
+
+#define	RTP_ALLOC_DO_GSM1	1
+#define	RTP_ALLOC_DO_PSTN	2
+#define	RTP_ALLOC_DO_GSM2	4
+
+#define	RTP_ALLOC_TYPE_GSM	RTP_ALLOC_DO_GSM1
+#define	RTP_ALLOC_TYPE_PSTN	RTP_ALLOC_DO_PSTN
+#define	RTP_ALLOC_TYPE_GSM2PSTN	(RTP_ALLOC_DO_GSM1 | RTP_ALLOC_DO_PSTN)
+#define	RTP_ALLOC_TYPE_GSM2GSM	(RTP_ALLOC_DO_GSM1 | RTP_ALLOC_DO_GSM2)
+
+struct rtp_alloc_resp {
+	uint32_t	transact_ref;
+	uint32_t	res;
+	struct sockaddr_storage gsm_addr;
+	struct sockaddr_storage pstn_addr;	/* also used for 2nd GSM */
+};
+
+#define	RTP_ALLOC_OK		0
+#define	RTP_ALLOC_ERR_PARAM	1
+#define	RTP_ALLOC_ERR_RSRC	2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/include/rtp_defs.h	Mon May 27 09:10:27 2024 +0000
@@ -0,0 +1,19 @@
+/*
+ * This header file holds some definitions for RTP, as this protocol
+ * functions in our GSM and PSTN environment.
+ */
+
+#pragma once
+
+#define	RTP_PACKET_HDR_SIZE	12
+#define	RTP_PACKET_SIZE_PSTN	172
+#define	RTP_MAX_PAYLOAD		160
+
+struct rtp_packet {
+	uint8_t		v_p_x_cc;
+	uint8_t		m_pt;
+	uint16_t	seq;
+	uint32_t	tstamp;
+	uint32_t	ssrc;
+	uint8_t		payload[RTP_MAX_PAYLOAD];
+};