vdpau: keep video surfaces for another cycle

[vuplus_xbmc] / xbmc / cores / dvdplayer / DVDCodecs / Video / VDPAU.cpp

diff --git a/xbmc/cores/dvdplayer/DVDCodecs/Video/VDPAU.cpp b/xbmc/cores/dvdplayer/DVDCodecs/Video/VDPAU.cpp
index eb75adc..271e72c 100644 (file)
--- a/xbmc/cores/dvdplayer/DVDCodecs/Video/VDPAU.cpp
+++ b/xbmc/cores/dvdplayer/DVDCodecs/Video/VDPAU.cpp
@@ -2312,7 +2312,10 @@ void CMixer::InitCycle()
 
 void CMixer::FiniCycle()
 {
-  while (m_mixerInput.size() > 3)
+  // Keep video surfaces for one 2 cycles longer than used
+  // by mixer. This avoids blocking in decoder.
+  // NVidia recommends num_ref + 5
+  while (m_mixerInput.size() > 5)
   {
     CVdpauDecodedPicture &tmp = m_mixerInput.back();
     if (m_processPicture.DVDPic.format != RENDER_FMT_VDPAU_420)