Only consider linear frames for talk detection -- ignore anything else (bug #2219)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@3594 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/apps/app_talkdetect.c b/apps/app_talkdetect.c
index 79bac38..0816949 100755 (executable)
--- a/apps/app_talkdetect.c
+++ b/apps/app_talkdetect.c
@@ -130,7 +130,7 @@ static int background_detect_exec(struct ast_channel *chan, void *data)
                                                        ast_frfree(fr);
                                                        break;
                                                }
-                                       } else if (fr->frametype == AST_FRAME_VOICE) {
+                                       } else if ((fr->frametype == AST_FRAME_VOICE) && (fr->subclass == AST_FORMAT_SLINEAR)) {
                                                int totalsilence;
                                                int ms;
                                                res = ast_dsp_silence(dsp, fr, &totalsilence);