From 65550b96ed6163f2258b34232a546c27784f4e4a Mon Sep 17 00:00:00 2001
From: Stefan Sayer <stefan.sayer@googlemail.com>
Date: Tue, 6 Nov 2007 00:08:24 +0000
Subject: [PATCH] spandsp dtmf detection configurable as default dtmf detector

git-svn-id: http://svn.berlios.de/svnroot/repos/sems/trunk@546 8eb893ce-cfd4-0310-b710-fb5ebe64c474
---
 core/AmConfig.cpp       | 11 +++++++++++
 core/AmConfig.h         |  3 +++
 core/AmDtmfDetector.cpp | 10 ++++++----
 core/sems.conf.sample   |  9 +++++++++
 4 files changed, 29 insertions(+), 4 deletions(-)

diff --git a/core/AmConfig.cpp b/core/AmConfig.cpp
index d0ea7ac4..30ae9af2 100644
--- a/core/AmConfig.cpp
+++ b/core/AmConfig.cpp
@@ -61,6 +61,8 @@ bool	     AmConfig::SingleCodecInOK	       = false;
 unsigned int AmConfig::DeadRtpTime             = DEAD_RTP_TIME;
 bool         AmConfig::IgnoreRTPXHdrs          = false;
 string       AmConfig::DefaultApplication      = "";
+Dtmf::InbandDetectorType 
+AmConfig::DefaultDTMFDetector     = Dtmf::SEMSInternal;
 
 vector <string> AmConfig::CodecOrder;
 
@@ -282,6 +284,15 @@ int AmConfig::readConfiguration()
     }
   }
 
+  if(cfg.hasParameter("dtmf_detector")){
+    if (cfg.getParameter("dtmf_detector") == "spandsp") {
+#ifndef USE_SPANDSP
+      WARN("spandsp support not compiled in.\n");
+#endif
+      DefaultDTMFDetector = Dtmf::SpanDSP;
+    }
+  }
+
   return defaultSessionTimerConfig.readFromConfig(cfg);
 }	
 
diff --git a/core/AmConfig.h b/core/AmConfig.h
index 6c8c9889..d3e22167 100644
--- a/core/AmConfig.h
+++ b/core/AmConfig.h
@@ -29,6 +29,7 @@
 #define _AmConfig_h_
 
 #include "AmSdp.h"
+#include "AmDtmfDetector.h"
 
 #include <string>
 #include <map>
@@ -101,6 +102,8 @@ struct AmConfig
   /** Ignore RTP Extension headers? */
   static bool IgnoreRTPXHdrs;
 
+  static Dtmf::InbandDetectorType DefaultDTMFDetector;
+
   /** Init function. Resolves SMTP server address. */
   static int init();
 
diff --git a/core/AmDtmfDetector.cpp b/core/AmDtmfDetector.cpp
index 3d25a21d..025b9510 100644
--- a/core/AmDtmfDetector.cpp
+++ b/core/AmDtmfDetector.cpp
@@ -181,9 +181,11 @@ AmDtmfDetector::AmDtmfDetector(AmSession *session)
     m_eventPending(false), m_sipEventReceived(false),
     m_inbandEventReceived(false), m_rtpEventReceived(false)
 {
-  m_inbandDetector.reset(new AmSemsInbandDtmfDetector(this));
-  m_inband_type = Dtmf::SEMSInternal;
-
+#ifndef USE_SPANDSP
+  setInbandDetector(Dtmf::SEMSInternal);
+#else
+  setInbandDetector(AmConfig::DefaultDTMFDetector);
+#endif
 }
 
 void AmDtmfDetector::setInbandDetector(Dtmf::InbandDetectorType t) {
@@ -649,7 +651,7 @@ void AmSpanDSPInbandDtmfDetector::tone_report_func(void *user_data, int code, in
 }
 
 void AmSpanDSPInbandDtmfDetector::tone_report_f(int code, int level, int delay) {
-  //  DBG("tone report %c, %d, %d\n", code, level, delay);
+  //  DBG("spandsp reports tone %c, %d, %d\n", code, level, delay);
   if (code) { // key pressed
     gettimeofday(&key_start, NULL);
     m_lastCode = code;
diff --git a/core/sems.conf.sample b/core/sems.conf.sample
index 59ebd1be..70c6f15b 100644
--- a/core/sems.conf.sample
+++ b/core/sems.conf.sample
@@ -216,3 +216,12 @@ media_processor_threads=1
 #
 # ignore_rtpxheaders=yes
 
+# optional parameter: dtmf_detector={spandsp|internal}
+#
+# sets inband DTMF detector to use. spandsp support must be compiled in
+# for this to have effect if dtmf_detector=spandsp.
+#  
+# default: internal
+#
+#dtmf_detector=spandsp
+