Changeset 3567 for pjproject/branches/1.x/pjmedia/include/pjmedia/delaybuf.h

Timestamp:

May 15, 2011 12:54:28 PM (13 years ago)

Author:

ming

Message:

Fixed #1257: Option for using simple FIFO delay buffer in echo canceller.

File:

• pjproject/branches/1.x/pjmedia/include/pjmedia/delaybuf.h (modified) (2 diffs)

pjproject/branches/1.x/pjmedia/include/pjmedia/delaybuf.h

@@ -65 +65 @@
 
 /**
+ * Delay buffer options.
+ */
+typedef enum pjmedia_delay_buf_flag
+{
+    /**
+     * Use simple FIFO mechanism for the delay buffer, i.e.
+     * without WSOLA for expanding and shrinking audio samples.
+     */
+    PJMEDIA_DELAY_BUF_SIMPLE_FIFO = 1
+
+} pjmedia_delay_buf_flag;
+
+/**
  * Create the delay buffer. Once the delay buffer is created, it will
  * enter learning state unless the delay argument is specified, which
@@ -80 +93 @@
  *                          one frame time, default maximum delay used is
  *                          400 ms.
- * @param options           Option flags, must be zero for now.
+ * @param options           Options. If PJMEDIA_DELAY_BUF_SIMPLE_FIFO is
+ *                          specified, then a simple FIFO mechanism
+ *                          will be used instead of the adaptive
+ *                          implementation (which uses WSOLA to expand
+ *                          or shrink audio samples).
+ *                          See #pjmedia_delay_buf_flag for other options.
  * @param p_b               Pointer to receive the delay buffer instance.
  *