From 59c9380b9186411c8882291d5a01cb91b5470f71 Mon Sep 17 00:00:00 2001
From: Jehan Monnier <jehan.monnier@linphone.org>
Date: Thu, 11 Mar 2010 14:34:25 +0100
Subject: [PATCH] add support for download ptime

---
 coreapi/exevents.c     |  4 ++++
 coreapi/linphonecore.c | 16 ++++++++++++++++
 coreapi/linphonecore.h | 13 ++++++++++++-
 coreapi/sdphandler.c   |  5 +++++
 4 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/coreapi/exevents.c b/coreapi/exevents.c
index 36ed2b6d7..4dcee01a6 100644
--- a/coreapi/exevents.c
+++ b/coreapi/exevents.c
@@ -481,6 +481,10 @@ int linphone_set_audio_offer(sdp_context_t *ctx)
 	payload.a_rtpmap="telephone-event/8000";
 	payload.a_fmtp="0-11";
 	if (lc->dw_audio_bw>0) payload.b_as_bandwidth=lc->dw_audio_bw;
+	if (lc->down_ptime>0) {
+		payload.a_ptime=lc->down_ptime;
+		ms_message("ptime [%i]",payload.a_ptime);
+	}
 	sdp_context_add_audio_payload(ctx,&payload);
 	return 0;
 }
diff --git a/coreapi/linphonecore.c b/coreapi/linphonecore.c
index 5f94e634e..284a6e56d 100644
--- a/coreapi/linphonecore.c
+++ b/coreapi/linphonecore.c
@@ -487,6 +487,9 @@ net_config_read (LinphoneCore *lc)
 	lc->net_conf.nat_sdp_only=tmp;
 	tmp=lp_config_get_int(lc->config,"net","mtu",0);
 	linphone_core_set_mtu(lc,tmp);
+	tmp=lp_config_get_int(lc->config,"net","download_ptime",0);
+	linphone_core_set_download_ptime(lc,tmp);
+
 }
 
 static void build_sound_devices_table(LinphoneCore *lc){
@@ -854,6 +857,18 @@ int linphone_core_get_download_bandwidth(const LinphoneCore *lc){
 int linphone_core_get_upload_bandwidth(const LinphoneCore *lc){
 	return lc->net_conf.upload_bw;
 }
+/**
+ * set audio packetization time linphone expect to received from peer
+ */
+void linphone_core_set_download_ptime(LinphoneCore *lc, int ptime);
+
+void linphone_core_set_download_ptime(LinphoneCore *lc, int ptime) {
+	lc->down_ptime=ptime;
+}
+int  linphone_core_get_download_ptime(LinphoneCore *lc) {
+	return lc->down_ptime;
+}
+
 
 /**
  * Returns liblinphone's version as a string.
@@ -952,6 +967,7 @@ static void linphone_core_init (LinphoneCore * lc, const LinphoneCoreVTable *vta
 	lc->vtable.display_status(lc,_("Ready"));
         gstate_new_state(lc, GSTATE_POWER_ON, NULL);
 	lc->auto_net_state_mon=TRUE;
+
     lc->ready=TRUE;
 }
 
diff --git a/coreapi/linphonecore.h b/coreapi/linphonecore.h
index 0796a6d05..4561250a0 100644
--- a/coreapi/linphonecore.h
+++ b/coreapi/linphonecore.h
@@ -661,6 +661,7 @@ typedef struct _LinphoneCore
 	 * In case of false, network state must be communicate to linphone core with method linphone_core_
 	 */
 	bool_t auto_net_state_mon;
+	int down_ptime;
 } LinphoneCore;
 
 
@@ -712,7 +713,17 @@ void linphone_core_set_upload_bandwidth(LinphoneCore *lc, int bw);
 
 int linphone_core_get_download_bandwidth(const LinphoneCore *lc);
 int linphone_core_get_upload_bandwidth(const LinphoneCore *lc);
-
+/**
+ * set audio packetization time linphone expect to received from peer
+ * @ingroup media_parameters
+ *
+ */
+void linphone_core_set_download_ptime(LinphoneCore *lc, int ptime);
+/**
+ * get audio packetization time linphone expect to received from peer, 0 means unspecified
+ * @ingroup media_parameters
+ */
+int  linphone_core_get_download_ptime(LinphoneCore *lc);
 
 #ifdef VINCENT_MAURY_RSVP
 /* QoS functions */
diff --git a/coreapi/sdphandler.c b/coreapi/sdphandler.c
index 890217289..bf622a92e 100644
--- a/coreapi/sdphandler.c
+++ b/coreapi/sdphandler.c
@@ -238,6 +238,11 @@ sdp_context_add_payload (sdp_context_t * ctx, sdp_payload_t * payload, char *med
 				     attr_field);
 		}
 	}
+	if (payload->a_ptime !=0) {
+		attr_field = sstrdup_sprintf ("%i", payload->a_ptime);
+		sdp_message_a_attribute_add(offer, payload->line,osip_strdup ("ptime"),attr_field);
+		ms_message("adding ptime [%s]",attr_field);
+	}
 }
 
 void