Allow to save to a file even when there is no active sound card

git-svn-id: http://svn.digium.com/svn/zaptel/trunk@237 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 12 insertions, 9 deletions

diff --git a/ztmonitor.c b/ztmonitor.c
index c226c33..d915ece 100755
--- a/ztmonitor.c
+++ b/ztmonitor.c
@@ -227,8 +227,10 @@ int main(int argc, char *argv[])
 	}
 	if (!visual) {
 		/* Open audio */
-		if ((afd = audio_open()) < 0)
-			exit(1);
+		if ((afd = audio_open()) < 0) {
+			printf("Cannot open audio ...\n");
+			if (!ofh) exit(0);
+		}
 	}
 	/* Open Pseudo device */
 	if ((pfd = pseudo_open()) < 0)
@@ -278,13 +280,14 @@ int main(int argc, char *argv[])
 		} else {
 			if (ofh)	        
 				fwrite(buf, 1, res, ofh);
-		  
-			if (stereo) {
-				for (x=0;x<res;x++)
-					buf2[x<<1] = buf2[(x<<1) + 1] = buf[x];
-				write(afd, buf2, res << 1);
-			} else
-				write(afd, buf, res);
+		 	if (afd) {
+				if (stereo) {
+					for (x=0;x<res;x++)
+						buf2[x<<1] = buf2[(x<<1) + 1] = buf[x];
+					write(afd, buf2, res << 1);
+				} else
+					write(afd, buf, res);
+			}
 		}
 	}
 	if (ofh) fclose(ofh); /*Never Reached */