From 93da71f96384107356db72d8a34fc45d488d7fb2 Mon Sep 17 00:00:00 2001
From: Brian West <brian@freeswitch.org>
Date: Tue, 23 Jun 2009 17:28:00 +0000
Subject: [PATCH]  add language weight to pocketsphinx

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@13910 d0543943-73ff-0310-b7d9-9358b9ac24b2
---
 conf/autoload_configs/pocketsphinx.conf.xml         | 1 +
 src/mod/asr_tts/mod_pocketsphinx/mod_pocketsphinx.c | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/conf/autoload_configs/pocketsphinx.conf.xml b/conf/autoload_configs/pocketsphinx.conf.xml
index f6d8b6db5b..3bf7d5e575 100644
--- a/conf/autoload_configs/pocketsphinx.conf.xml
+++ b/conf/autoload_configs/pocketsphinx.conf.xml
@@ -4,6 +4,7 @@
     <param name="silence-hits" value="25"/>
     <param name="listen-hits" value="1"/>
     <param name="auto-reload" value="true"/>
+    <!--<param name="language-weight" value="1"/>-->
     <!--<param name="narrowband-model" value="communicator"/>-->
     <!--<param name="wideband-model" value="wsj1"/>-->
     <!--<param name="dictionary" value="default.dic"/>-->
diff --git a/src/mod/asr_tts/mod_pocketsphinx/mod_pocketsphinx.c b/src/mod/asr_tts/mod_pocketsphinx/mod_pocketsphinx.c
index 94cd6db7e7..2c2ba6a5c3 100644
--- a/src/mod/asr_tts/mod_pocketsphinx/mod_pocketsphinx.c
+++ b/src/mod/asr_tts/mod_pocketsphinx/mod_pocketsphinx.c
@@ -46,6 +46,7 @@ static struct {
 	char *model8k;
 	char *model16k;
 	char *dictionary;
+	char *language_weight;
 	uint32_t thresh;
 	uint32_t silence_hits;
 	uint32_t listen_hits;
@@ -160,6 +161,7 @@ static switch_status_t pocketsphinx_asr_load_grammar(switch_asr_handle_t *ah, co
 							 "-samprate", rate,
 							 "-hmm", model,
 							 "-jsgf", jsgf, 
+							 "-lw", globals.language_weight,
 							 "-dict", dic,
 							 "-frate", "50",
 							 "-silprob", "0.005",
@@ -433,6 +435,8 @@ static switch_status_t load_config(void)
 				globals.thresh = atoi(val);
 			} else if (!strcasecmp(var, "silence-hits")) {
 				globals.silence_hits = atoi(val);
+			} else if (!strcasecmp(var, "language-weight")) {
+				globals.language_weight = switch_core_strdup(globals.pool, val);
 			} else if (!strcasecmp(var, "listen-hits")) {
 				globals.listen_hits = atoi(val);
 			} else if (!strcasecmp(var, "auto-reload")) {
@@ -459,6 +463,10 @@ static switch_status_t load_config(void)
 		globals.dictionary = switch_core_strdup(globals.pool, "default.dic");
 	}
 
+	if (!globals.language_weight) {
+		globals.language_weight = switch_core_strdup(globals.pool, "6.5");
+	}
+
  done:
 	if (xml) {
 		switch_xml_free(xml);