From 987e283e9f3aa052669c3902f1a910a0501b75bc Mon Sep 17 00:00:00 2001
From: Lubos Dolezel <lubos@dolezel.info>
Date: Thu, 11 Jun 2015 15:32:22 +0200
Subject: Some initial changes for G.729A support (issue #15)

---
 src/audio/audio_codecs.h |  3 ++-
 src/sdp/sdp.cpp          | 10 ++++++++++
 src/sdp/sdp.h            |  3 +++
 3 files changed, 15 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/audio/audio_codecs.h b/src/audio/audio_codecs.h
index 54967b1..30011bb 100644
--- a/src/audio/audio_codecs.h
+++ b/src/audio/audio_codecs.h
@@ -37,7 +37,8 @@ enum t_audio_codec {
 	CODEC_G726_24,
 	CODEC_G726_32,
 	CODEC_G726_40,
-	CODEC_TELEPHONE_EVENT
+	CODEC_TELEPHONE_EVENT,
+	CODEC_G729A
 };
 
 // Default ptime values (ms) for audio codecs
diff --git a/src/sdp/sdp.cpp b/src/sdp/sdp.cpp
index 3c9a93d..ba683c5 100644
--- a/src/sdp/sdp.cpp
+++ b/src/sdp/sdp.cpp
@@ -342,6 +342,16 @@ void t_sdp_media::add_format(unsigned short f, t_audio_codec codec) {
 		string fmtp = int2str(f);
 		fmtp += ' ';
 		fmtp += "0-15";
+
+		attributes.push_back(t_sdp_attr("fmtp", fmtp));
+	}
+	else if (codec == CODEC_G729A)
+	{
+		string fmtp = int2str(f);
+
+		fmtp += ' ';
+		fmtp += "annexb=no"; // annexb=no means G729A
+
 		attributes.push_back(t_sdp_attr("fmtp", fmtp));
 	}
 }
diff --git a/src/sdp/sdp.h b/src/sdp/sdp.h
index 92edebe..4a3833d 100644
--- a/src/sdp/sdp.h
+++ b/src/sdp/sdp.h
@@ -34,6 +34,7 @@
 #define SDP_FORMAT_G711_ULAW	0
 #define SDP_FORMAT_GSM		3
 #define SDP_FORMAT_G711_ALAW	8
+#define SDP_FORMAT_G729			18
 
 // rtpmap values
 #define SDP_RTPMAP_G711_ULAW	"PCMU/8000"
@@ -47,6 +48,7 @@
 #define SDP_RTPMAP_G726_24	"G726-24/8000"
 #define SDP_RTPMAP_G726_32	"G726-32/8000"
 #define SDP_RTPMAP_G726_40	"G726-40/8000"
+#define SDP_RTPMAP_G729A	"G729/8000"
 #define SDP_RTPMAP_TELEPHONE_EV	"telephone-event/8000"
 
 // Audio codec names
@@ -59,6 +61,7 @@
 #define SDP_AC_NAME_G726_24		"G726-24"
 #define SDP_AC_NAME_G726_32		"G726-32"
 #define SDP_AC_NAME_G726_40		"G726-40"
+#define SDP_AC_NAME_G729		"G729"
 #define SDP_AC_NAME_TELEPHONE_EV	"telephone-event"
 
 // Check on fmtp parameter values
-- 
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