[FFmpeg-cvslog] ffplay: use NAN to signal invalid external clock

[Marton Balint]

ffmpeg | branch: master | Marton Balint <cus at passwd.hu> | Fri Feb 22 18:18:00 2013 +0100| [daece4c6745b42e8b1e171fb4bf485d5d64fc53f] | committer: Marton Balint

ffplay: use NAN to signal invalid external clock

Signed-off-by: Marton Balint <cus at passwd.hu>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=daece4c6745b42e8b1e171fb4bf485d5d64fc53f
---

 ffplay.c |    9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/ffplay.c b/ffplay.c
index ad3e36c..e0b113c 100644
--- a/ffplay.c
+++ b/ffplay.c
@@ -1156,7 +1156,8 @@ static void update_external_clock_pts(VideoState *is, double pts)
 }
 
 static void check_external_clock_sync(VideoState *is, double pts) {
-    if (fabs(get_external_clock(is) - pts) > AV_NOSYNC_THRESHOLD) {
+    double ext_clock = get_external_clock(is);
+    if (isnan(ext_clock) || fabs(ext_clock - pts) > AV_NOSYNC_THRESHOLD) {
         update_external_clock_pts(is, pts);
     }
 }
@@ -2717,8 +2718,7 @@ static int read_thread(void *arg)
                     packet_queue_put(&is->videoq, &flush_pkt);
                 }
                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
-                   //FIXME: use a cleaner way to signal obsolete external clock...
-                   update_external_clock_pts(is, (double)AV_NOPTS_VALUE);
+                   update_external_clock_pts(is, NAN);
                 } else {
                    update_external_clock_pts(is, seek_target / (double)AV_TIME_BASE);
                 }
@@ -2854,8 +2854,7 @@ static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
 
     is->continue_read_thread = SDL_CreateCond();
 
-    //FIXME: use a cleaner way to signal obsolete external clock...
-    update_external_clock_pts(is, (double)AV_NOPTS_VALUE);
+    update_external_clock_pts(is, NAN);
     update_external_clock_speed(is, 1.0);
     is->audio_current_pts_drift = -av_gettime() / 1000000.0;
     is->video_current_pts_drift = is->audio_current_pts_drift;