[aravis] viewer: use host time for buffer timestamp before sending them to appsrc

[Emmanuel Pacaud <emmanuel src gnome org>]

commit c77dda9ecce3616085978342869809c1be80b9d9
Author: Emmanuel Pacaud <emmanuel gnome org>
Date:   Tue Apr 15 10:23:30 2014 +0200

    viewer: use host time for buffer timestamp before sending them to appsrc
    
    It fixes issue with PointGrey blackfly cameras, where TimingTickFrequency
    register returns a wrong value, leading to incorrect timestamp in buffers.

 viewer/arvviewer.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/viewer/arvviewer.c b/viewer/arvviewer.c
index 6eb8722..6601e57 100644
--- a/viewer/arvviewer.c
+++ b/viewer/arvviewer.c
@@ -153,6 +153,8 @@ arv_viewer_new_buffer_cb (ArvStream *stream, ArvViewer *viewer)
 
                arv_row_stride = arv_buffer->width * ARV_PIXEL_FORMAT_BIT_PER_PIXEL 
(arv_buffer->pixel_format) / 8;
 
+               arv_buffer->timestamp_ns = g_get_real_time () * 1000LL;
+
                /* Gstreamer requires row stride to be a multiple of 4 */
                if ((arv_row_stride & 0x3) != 0) {
                        int gst_row_stride;