Changed pasound.c to handle situation when NULL is passed as input/output buffer by PortAudio

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@760 74dad513-b988-da41-8d7b-12977e46ad98

1 files changed, 6 insertions, 0 deletions

diff --git a/pjmedia/src/pjmedia/pasound.c b/pjmedia/src/pjmedia/pasound.c
index 75caf66b..6990fc13 100644
--- a/pjmedia/src/pjmedia/pasound.c
+++ b/pjmedia/src/pjmedia/pasound.c
@@ -84,6 +84,9 @@ static int PaRecorderCallback(const void *input,
     if (stream->quit_flag)
 	goto on_break;
 
+    if (input == NULL)
+	return paContinue;
+
     if (stream->thread_initialized == 0) {
 	status = pj_thread_register("pa_rec", stream->thread_desc, 
 				    &stream->thread);
@@ -129,6 +132,9 @@ static int PaPlayerCallback( const void *input,
     if (stream->quit_flag)
 	goto on_break;
 
+    if (output == NULL)
+	return paContinue;
+
     if (stream->thread_initialized == 0) {
 	status = pj_thread_register("portaudio", stream->thread_desc,
 				    &stream->thread);