[svn-commits] dvossel: branch dvossel/kill_the_echo r317431 - /team/dvossel/kill_the_echo/f...

[SVN commits to the Digium repositories]

Author: dvossel
Date: Thu May  5 17:13:48 2011
New Revision: 317431

URL: http://svnview.digium.com/svn/asterisk?view=rev&rev=317431
Log:
more experimentation

Modified:
    team/dvossel/kill_the_echo/funcs/func_echocancel.c

Modified: team/dvossel/kill_the_echo/funcs/func_echocancel.c
URL: http://svnview.digium.com/svn/asterisk/team/dvossel/kill_the_echo/funcs/func_echocancel.c?view=diff&rev=317431&r1=317430&r2=317431
==============================================================================
--- team/dvossel/kill_the_echo/funcs/func_echocancel.c (original)
+++ team/dvossel/kill_the_echo/funcs/func_echocancel.c Thu May  5 17:13:48 2011
@@ -44,6 +44,9 @@
 
 struct echocancel_data {
 	int16_t buf[4048];
+	int16_t last[4048];
+	int lastlen;
+
 	struct ast_audiohook audiohook;
 	unsigned int samplerate;
 	SpeexEchoState *echo_state;
@@ -106,10 +109,12 @@
 	echo_data_set(ast_format_rate(&f->subclass.format), echodata);
 
 	if (direction == AST_AUDIOHOOK_DIRECTION_WRITE) {
-		speex_echo_playback(echodata->echo_state, (int16_t *) f->data.ptr);
+		memcpy(echodata->last, f->data.ptr, f->datalen);
+		echodata->lastlen = f->datalen;
 	} else {
 		memcpy(echodata->buf, f->data.ptr, f->datalen);
-		speex_echo_capture(echodata->echo_state, echodata->buf, (int16_t *) f->data.ptr);
+		memset(f->data.ptr, 0, f->datalen);
+		speex_echo_cancellation(echodata->echo_state, echodata->buf, echodata->last, (int16_t *) f->data.ptr);
 	}
 
 	return 0;