Various IAX2 fixes

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@5901 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_iax2.c

@@ -94,10 +94,11 @@ static int nochecksums = 0;
 /*
  * Uncomment to try experimental IAX bridge optimization,
  * designed to reduce latency when IAX calls cannot
- * be trasnferred
+ * be trasnferred -- obsolete
  */
 
-#define BRIDGE_OPTIMIZATION 
+/* #define BRIDGE_OPTIMIZATION  */
+
 
 #define PTR_TO_CALLNO(a) ((unsigned short)(unsigned long)(a))
 #define CALLNO_TO_PTR(a) ((void *)(unsigned long)(a))
@@ -6249,13 +6250,17 @@ static int socket_read(int *id, int fd, short events, void *cbdata)
 										forward_delivery(&fr);
 									} else {
 										duped_fr = iaxfrdup2(&fr);
+										if (duped_fr) {
 											schedule_delivery(duped_fr, 1, updatehistory, 1);
 											fr.ts = duped_fr->ts;
 										}
+									}
 #else
 									duped_fr = iaxfrdup2(&fr);
+									if (duped_fr) {
 										schedule_delivery(duped_fr, 1, updatehistory, 1);
 										fr.ts = duped_fr->ts;
+									}
 #endif
 									if (iaxs[fr.callno]->last < fr.ts) {
 										iaxs[fr.callno]->last = fr.ts;
@@ -7413,13 +7418,17 @@ retryowner2:
 		forward_delivery(&fr);
 	} else {
 		duped_fr = iaxfrdup2(&fr);
+		if (duped_fr) {
 			schedule_delivery(duped_fr, 1, updatehistory, 0);
 			fr.ts = duped_fr->ts;
 		}
+	}
 #else
 	duped_fr = iaxfrdup2(&fr);
+	if (duped_fr) {
 		schedule_delivery(duped_fr, 1, updatehistory, 0);
 		fr.ts = duped_fr->ts;
+	}
 #endif
 
 	if (iaxs[fr.callno]->last < fr.ts) {

channels/iax2-parser.c

@@ -880,7 +880,7 @@ void iax_frame_wrap(struct iax_frame *fr, struct ast_frame *f)
 	if (fr->af.datalen) {
 #if __BYTE_ORDER == __LITTLE_ENDIAN
 		/* We need to byte-swap slinear samples from network byte order */
-		if (fr->af.subclass == AST_FORMAT_SLINEAR) {
+		if ((fr->af.frametype == AST_FRAME_VOICE) && (fr->af.subclass == AST_FORMAT_SLINEAR)) {
 			ast_swapcopy_samples(fr->af.data, f->data, fr->af.samples);
 		} else
 #endif