qv4l2: init dest format when starting vbi/swradio streaming

After streaming video first the destination format will be e.g. YUV,
and vbi/swradio expect RGB24. So set that explicitly.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>

diff --git a/utils/qv4l2/qv4l2.cpp b/utils/qv4l2/qv4l2.cpp
index ad6d746..e59056c 100644 (file)
--- a/utils/qv4l2/qv4l2.cpp
+++ b/utils/qv4l2/qv4l2.cpp
@@ -1241,6 +1241,7 @@ void ApplicationWindow::capStart(bool start)
                        error("no services possible\n");
                        return;
                }
+               m_capDestFormat.s_pixelformat(V4L2_PIX_FMT_RGB24);
                m_vbiTab->rawFormat(fmt.fmt.vbi);
                m_vbiWidth = fmt.fmt.vbi.samples_per_line;
                m_vbiHeight = fmt.fmt.vbi.count[0] + fmt.fmt.vbi.count[1];
@@ -1274,6 +1275,7 @@ void ApplicationWindow::capStart(bool start)
                        return;
                }
                m_sdrSize = fmt.fmt.sdr.buffersize;
+               m_capDestFormat.s_pixelformat(V4L2_PIX_FMT_RGB24);
                m_frameData = new unsigned char[m_sdrSize];
                m_capImage = new QImage(SDR_WIDTH, SDR_HEIGHT, dstFmt);
                m_capImage->fill(0);