Ticket #438: Workaround for frame bursts from audio devices: added wsola in delaybuf, and put delaybuf in the bridge

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@1833 74dad513-b988-da41-8d7b-12977e46ad98

1 files changed, 26 insertions, 3 deletions

diff --git a/pjmedia/include/pjmedia/delaybuf.h b/pjmedia/include/pjmedia/delaybuf.h
index bdb0dd1d..2141c481 100644
--- a/pjmedia/include/pjmedia/delaybuf.h
+++ b/pjmedia/include/pjmedia/delaybuf.h
@@ -66,15 +66,17 @@ typedef struct pjmedia_delay_buf pjmedia_delay_buf;
  *			    from.
  * @param name		    Optional name for the buffer for log 
  *			    identification.
+ * @param clock_rate	    Number of samples processed per second.
  * @param samples_per_frame Number of samples per frame.
- * @param max_cnt	    Maximum number of delay to be accommodated,
+ * @param max_frames	    Maximum number of delay to be accommodated,
  *			    in number of frames.
  * @param delay		    The delay to be applied, in number of frames.
- *			    If the value is -1, the delay buffer will
+ *			    If the value is -1 or 0, the delay buffer will
  *			    learn about the delay automatically. If
  *			    the value is greater than zero, then this
  *			    value will be used and no learning will be
  *			    performed.
+ * @param option	    Option flags, must be zero for now.
  * @param p_b		    Pointer to receive the delay buffer instance.
  *
  * @return		    PJ_SUCCESS if the delay buffer has been
@@ -83,9 +85,11 @@ typedef struct pjmedia_delay_buf pjmedia_delay_buf;
  */
 PJ_DECL(pj_status_t) pjmedia_delay_buf_create(pj_pool_t *pool,
 					      const char *name,
+					      unsigned clock_rate,
 					      unsigned samples_per_frame,
-					      unsigned max_cnt,
+					      unsigned max_frames,
 					      int delay,
+					      unsigned options,
 					      pjmedia_delay_buf **p_b);
 
 /**
@@ -131,6 +135,25 @@ PJ_DECL(pj_status_t) pjmedia_delay_buf_get(pjmedia_delay_buf *b,
  */
 PJ_DECL(pj_status_t) pjmedia_delay_buf_learn(pjmedia_delay_buf *b);
 
+/**
+ * Reset delay buffer. This will clear the buffer's content. But keep
+ * the learning result.
+ *
+ * @param b		    The delay buffer.
+ *
+ * @return		    PJ_SUCCESS on success or the appropriate error.
+ */
+PJ_DECL(pj_status_t) pjmedia_delay_buf_reset(pjmedia_delay_buf *b);
+
+/**
+ * Destroy delay buffer.
+ *
+ * @param b	    Delay buffer session.
+ *
+ * @return	    PJ_SUCCESS normally.
+ */
+PJ_DECL(pj_status_t) pjmedia_delay_buf_destroy(pjmedia_delay_buf *b);
+
 
 PJ_END_DECL