Added pjmedia_wsola_reset()

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@1831 74dad513-b988-da41-8d7b-12977e46ad98

2 files changed, 26 insertions, 0 deletions

diff --git a/pjmedia/include/pjmedia/wsola.h b/pjmedia/include/pjmedia/wsola.h
index 9592db38..dbeab186 100644
--- a/pjmedia/include/pjmedia/wsola.h
+++ b/pjmedia/include/pjmedia/wsola.h
@@ -99,6 +99,18 @@ PJ_DECL(pj_status_t) pjmedia_wsola_destroy(pjmedia_wsola *wsola);
 
 
 /**
+ * Reset the buffer contents of WSOLA.
+ *
+ * @param wsola	    WSOLA session.
+ * @param options   Reset options, must be zero for now.
+ *
+ * @return	    PJ_SUCCESS normally.
+ */
+PJ_DECL(pj_status_t) pjmedia_wsola_reset(pjmedia_wsola *wsola,
+					 unsigned options);
+
+
+/**
  * Give one good frame to WSOLA to be kept as reference. Application
  * must continuously give WSOLA good frames to keep its session up to
  * date with current playback. Depending on the WSOLA implementation,
diff --git a/pjmedia/src/pjmedia/wsola.c b/pjmedia/src/pjmedia/wsola.c
index b0be6aba..23e73cf0 100644
--- a/pjmedia/src/pjmedia/wsola.c
+++ b/pjmedia/src/pjmedia/wsola.c
@@ -352,6 +352,20 @@ PJ_DEF(pj_status_t) pjmedia_wsola_destroy(pjmedia_wsola *wsola)
     return PJ_SUCCESS;
 }
 
+
+PJ_DEF(pj_status_t) pjmedia_wsola_reset( pjmedia_wsola *wsola,
+					 unsigned options)
+{
+    PJ_ASSERT_RETURN(wsola && options==0, PJ_EINVAL);
+    PJ_UNUSED_ARG(options);
+
+    pjmedia_zero_samples(wsola->buf, wsola->cur_cnt);
+    wsola->cur_cnt = (pj_uint16_t)(wsola->hist_cnt + 
+				   wsola->samples_per_frame);
+    return PJ_SUCCESS;
+}
+
+
 static void expand(pjmedia_wsola *wsola, unsigned needed)
 {
     unsigned generated = 0;