[opencv] 47/53: Fix frame timestamp in VideoCapture::get

[Nobuhiro Iwamatsu]

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iwamatsu pushed a commit to annotated tag 2.4.13.3
in repository opencv.

commit 6bafc2c59861600d7f4d8798aaa537d3589a039c
Author: kvaghel1 <kvaghel1 at binghamton.edu>
Date:   Mon May 22 21:22:35 2017 -0400

    Fix frame timestamp in VideoCapture::get
---
 modules/highgui/src/cap_v4l.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/modules/highgui/src/cap_v4l.cpp b/modules/highgui/src/cap_v4l.cpp
index ed5c09c..5ed6d3d 100644
--- a/modules/highgui/src/cap_v4l.cpp
+++ b/modules/highgui/src/cap_v4l.cpp
@@ -1164,12 +1164,12 @@ static int read_frame_v4l2(CvCaptureCAM_V4L* capture) {
    //printf("got data in buff %d, len=%d, flags=0x%X, seq=%d, used=%d)\n",
    //	  buf.index, buf.length, buf.flags, buf.sequence, buf.bytesused);
 
-   if (-1 == ioctl (capture->deviceHandle, VIDIOC_QBUF, &buf))
-       perror ("VIDIOC_QBUF");
-
    //set timestamp in capture struct to be timestamp of most recent frame
    capture->timestamp = buf.timestamp;
 
+   if (-1 == ioctl (capture->deviceHandle, VIDIOC_QBUF, &buf))
+       perror ("VIDIOC_QBUF");
+
    return 1;
 }
 

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