Improved handling frame numbers to have a smoother progress display during replay of recordings with B-frames

CONTRIBUTORS

@@ -3328,6 +3328,8 @@ Thomas Reufer <thomas@reufer.ch>
  for making the cPlayer member functions FramesPerSecond, GetIndex and GetReplayMode
  'const'
  for fixing resuming replay at a given position, which was off by one frame
+ for improving handling frame numbers to have a smoother progress display during
+ replay of recordings with B-frames
 
 Eike Sauer <EikeSauer@t-online.de>
  for reporting a problem with channels that need more than 5 TS packets for detecting

HISTORY

@@ -8857,3 +8857,5 @@ Video Disk Recorder Revision History
   'const' (thanks to Thomas Reufer).
 - Fixed resuming replay at a given position, which was off by one frame (thanks
   to Thomas Reufer).
+- Improved handling frame numbers to have a smoother progress display during
+  replay of recordings with B-frames (thanks to Thomas Reufer).

dvbplayer.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: dvbplayer.c 4.2 2016/12/22 09:40:30 kls Exp $
+ * $Id: dvbplayer.c 4.3 2016/12/22 10:43:10 kls Exp $
  */
 
 #include "dvbplayer.h"
@@ -17,13 +17,14 @@
 
 // --- cPtsIndex -------------------------------------------------------------
 
-#define PTSINDEX_ENTRIES 500
+#define PTSINDEX_ENTRIES 1024
 
 class cPtsIndex {
 private:
   struct tPtsIndex {
     uint32_t pts; // no need for 33 bit - some devices don't even supply the msb
     int index;
+    bool independent;
     };
   tPtsIndex pi[PTSINDEX_ENTRIES];
   int w, r;
@@ -33,8 +34,9 @@ public:
   cPtsIndex(void);
   void Clear(void);
   bool IsEmpty(void);
-  void Put(uint32_t Pts, int Index);
+  void Put(uint32_t Pts, int Index, bool Independent);
   int FindIndex(uint32_t Pts);
+  int FindFrameNumber(uint32_t Pts);
   };
 
 cPtsIndex::cPtsIndex(void)
@@ -55,10 +57,11 @@ bool cPtsIndex::IsEmpty(void)
   return w == r;
 }
 
-void cPtsIndex::Put(uint32_t Pts, int Index)
+void cPtsIndex::Put(uint32_t Pts, int Index, bool Independent)
 {
   cMutexLock MutexLock(&mutex);
   pi[w].pts = Pts;
+  pi[w].independent = Independent;
   pi[w].index = Index;
   w = (w + 1) % PTSINDEX_ENTRIES;
   if (w == r)
@@ -87,6 +90,36 @@ int cPtsIndex::FindIndex(uint32_t Pts)
   return Index;
 }
 
+int cPtsIndex::FindFrameNumber(uint32_t Pts)
+{
+  cMutexLock MutexLock(&mutex);
+  if (w == r)
+     return lastFound; // replay always starts at an I frame
+  bool Valid = false;
+  int d;
+  int FrameNumber = 0;
+  int UnplayedIFrame = 2; // GOPs may intersect, so we're looping until we found two unplayed I frames
+  for (int i = r; i != w && UnplayedIFrame; ) {
+      d = Pts - pi[i].pts;
+      if (d > 0x7FFFFFFF)
+         d = 0xFFFFFFFF - d; // handle rollover
+      if (d > 0) {
+         if (pi[i].independent) {
+            FrameNumber = pi[i].index; // an I frame's index represents its frame number
+            Valid = true;
+            }
+         else
+            FrameNumber++; // for every played non-I frame, increase frame number
+         }
+      else
+        if (pi[i].independent)
+           --UnplayedIFrame;
+      if (++i >= PTSINDEX_ENTRIES)
+         i = 0;
+      }
+  return Valid ? FrameNumber : FindIndex(Pts); // fall back during trick speeds
+}
+
 // --- cNonBlockingFileReader ------------------------------------------------
 
 class cNonBlockingFileReader : public cThread {
@@ -251,6 +284,7 @@ public:
   virtual double FramesPerSecond(void) { return framesPerSecond; }
   virtual void SetAudioTrack(eTrackType Type, const tTrackId *TrackId);
   virtual bool GetIndex(int &Current, int &Total, bool SnapToIFrame = false);
+  virtual bool GetFrameNumber(int &Current, int &Total);
   virtual bool GetReplayMode(bool &Play, bool &Forward, int &Speed);
   };
 
@@ -606,7 +640,7 @@ void cDvbPlayer::Action(void)
                 pc = playFrame->Count();
                 if (p) {
                    if (playFrame->Index() >= 0 && playFrame->Pts() != 0)
-                      ptsIndex.Put(playFrame->Pts(), playFrame->Index());
+                      ptsIndex.Put(playFrame->Pts(), playFrame->Index(), playFrame->Independent());
                    if (firstPacket) {
                       if (isPesRecording) {
                          PlayPes(NULL, 0);
@@ -880,7 +914,7 @@ void cDvbPlayer::Goto(int Index, bool Still)
                  if (playMode == pmPause)
                     DevicePlay();
                  DeviceStillPicture(b, r);
-                 ptsIndex.Put(isPesRecording ? PesGetPts(b) : TsGetPts(b, r), Index);
+                 ptsIndex.Put(isPesRecording ? PesGetPts(b) : TsGetPts(b, r), Index, true);
                  }
               playMode = pmStill;
               readIndex = Index;
@@ -925,6 +959,17 @@ bool cDvbPlayer::GetIndex(int &Current, int &Total, bool SnapToIFrame)
   return false;
 }
 
+bool cDvbPlayer::GetFrameNumber(int &Current, int &Total)
+{
+  if (index) {
+     Current = ptsIndex.FindFrameNumber(DeviceGetSTC());
+     Total = index->Last();
+     return true;
+     }
+  Current = Total = -1;
+  return false;
+}
+
 bool cDvbPlayer::GetReplayMode(bool &Play, bool &Forward, int &Speed)
 {
   Play = (playMode == pmPlay || playMode == pmFast);
@@ -1011,6 +1056,15 @@ bool cDvbPlayerControl::GetIndex(int &Current, int &Total, bool SnapToIFrame)
   return false;
 }
 
+bool cDvbPlayerControl::GetFrameNumber(int &Current, int &Total)
+{
+  if (player) {
+     player->GetFrameNumber(Current, Total);
+     return true;
+     }
+  return false;
+}
+
 bool cDvbPlayerControl::GetReplayMode(bool &Play, bool &Forward, int &Speed)
 {
   return player && player->GetReplayMode(Play, Forward, Speed);

dvbplayer.h

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: dvbplayer.h 4.1 2015/08/02 13:01:44 kls Exp $
+ * $Id: dvbplayer.h 4.2 2016/12/22 10:36:50 kls Exp $
  */
 
 #ifndef __DVBPLAYER_H
@@ -50,6 +50,10 @@ public:
   bool GetIndex(int &Current, int &Total, bool SnapToIFrame = false);
        // Returns the current and total frame index, optionally snapped to the
        // nearest I-frame.
+  bool GetFrameNumber(int &Current, int &Total);
+       // Returns the current and total frame number. In contrast to GetIndex(),
+       // this function respects the chronological order of frames, which is
+       // different from its index for streams containing B frames (e.g. H264)
   bool GetReplayMode(bool &Play, bool &Forward, int &Speed);
        // Returns the current replay mode (if applicable).
        // 'Play' tells whether we are playing or pausing, 'Forward' tells whether

menu.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: menu.c 4.18 2016/12/13 12:49:10 kls Exp $
+ * $Id: menu.c 4.19 2016/12/22 11:00:13 kls Exp $
  */
 
 #include "menu.h"
@@ -5435,6 +5435,7 @@ cReplayControl::cReplayControl(bool PauseLive)
   lastPlay = lastForward = false;
   lastSpeed = -2; // an invalid value
   timeoutShow = 0;
+  lastProgressUpdate = 0;
   timeSearchActive = false;
   cRecording Recording(fileName);
   cStatus::MsgReplaying(this, Recording.Name(), Recording.FileName(), true);
@@ -5583,8 +5584,8 @@ void cReplayControl::ShowMode(void)
 bool cReplayControl::ShowProgress(bool Initial)
 {
   int Current, Total;
-
+  if (Initial || time(NULL) - lastProgressUpdate >= 1) {
-  if (GetIndex(Current, Total) && Total > 0) {
+     if (GetFrameNumber(Current, Total) && Total > 0) {
         if (!visible) {
            displayReplay = Skins.Current()->DisplayReplay(modeOnly);
            displayReplay->SetMarks(&marks);
@@ -5600,6 +5601,7 @@ bool cReplayControl::ShowProgress(bool Initial)
            lastCurrent = lastTotal = -1;
            }
         if (Current != lastCurrent || Total != lastTotal) {
+           time(&lastProgressUpdate);
            if (Setup.ShowRemainingTime || Total != lastTotal) {
               int Index = Total;
               if (Setup.ShowRemainingTime)
@@ -5619,6 +5621,7 @@ bool cReplayControl::ShowProgress(bool Initial)
         ShowMode();
         return true;
         }
+     }
   return false;
 }
 
@@ -5858,6 +5861,8 @@ eOSState cReplayControl::ProcessKey(eKeys Key)
      return osEnd;
   if (Key == kNone && !marksModified)
      marks.Update();
+  if (Key != kNone)
+     lastProgressUpdate = 0;
   if (visible) {
      if (timeoutShow && time(NULL) > timeoutShow) {
         Hide();

menu.h

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: menu.h 4.4 2015/09/13 14:17:56 kls Exp $
+ * $Id: menu.h 4.5 2016/12/22 10:55:36 kls Exp $
  */
 
 #ifndef __MENU_H
@@ -300,6 +300,7 @@ private:
   bool lastPlay, lastForward;
   int lastSpeed;
   time_t timeoutShow;
+  time_t lastProgressUpdate;
   bool timeSearchActive, timeSearchHide;
   int timeSearchTime, timeSearchPos;
   void TimeSearchDisplay(void);

player.h

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: player.h 4.1 2016/12/22 09:22:27 kls Exp $
+ * $Id: player.h 4.2 2016/12/22 10:38:11 kls Exp $
  */
 
 #ifndef __PLAYER_H
@@ -57,6 +57,10 @@ public:
   virtual bool GetIndex(int &Current, int &Total, bool SnapToIFrame = false) { return false; }
        // Returns the current and total frame index, optionally snapped to the
        // nearest I-frame.
+  virtual bool GetFrameNumber(int &Current, int &Total) { return false; }
+       // Returns the current and total frame number. In contrast to GetIndex(),
+       // this function respects the chronological order of frames, which is
+       // different from its index for streams containing B frames (e.g. H264)
   virtual bool GetReplayMode(bool &Play, bool &Forward, int &Speed) { return false; }
        // Returns the current replay mode (if applicable).
        // 'Play' tells whether we are playing or pausing, 'Forward' tells whether
@@ -100,6 +104,7 @@ public:
          ///< string. The default implementation returns an empty string.
   double FramesPerSecond(void) const { return player->FramesPerSecond(); }
   bool GetIndex(int &Current, int &Total, bool SnapToIFrame = false) const { return player->GetIndex(Current, Total, SnapToIFrame); }
+  bool GetFrameNumber(int &Current, int &Total) const { return player->GetFrameNumber(Current, Total); }
   bool GetReplayMode(bool &Play, bool &Forward, int &Speed) const { return player->GetReplayMode(Play, Forward, Speed); }
   static void Launch(cControl *Control);
   static void Attach(void);

ringbuffer.c

@@ -7,7 +7,7 @@
  * Parts of this file were inspired by the 'ringbuffy.c' from the
  * LinuxDVB driver (see linuxtv.org).
  *
- * $Id: ringbuffer.c 2.5 2012/09/22 11:26:49 kls Exp $
+ * $Id: ringbuffer.c 4.1 2016/12/22 10:26:13 kls Exp $
  */
 
 #include "ringbuffer.h"
@@ -390,12 +390,13 @@ void cRingBufferLinear::Del(int Count)
 
 // --- cFrame ----------------------------------------------------------------
 
-cFrame::cFrame(const uchar *Data, int Count, eFrameType Type, int Index, uint32_t Pts)
+cFrame::cFrame(const uchar *Data, int Count, eFrameType Type, int Index, uint32_t Pts, bool Independent)
 {
   count = abs(Count);
   type = Type;
   index = Index;
   pts = Pts;
+  independent = Type == ftAudio ? true : Independent;
   if (Count < 0)
      data = (uchar *)Data;
   else {

ringbuffer.h

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: ringbuffer.h 2.5 2013/02/16 15:20:37 kls Exp $
+ * $Id: ringbuffer.h 4.1 2016/12/22 10:26:13 kls Exp $
  */
 
 #ifndef __RINGBUFFER_H
@@ -113,8 +113,9 @@ private:
   eFrameType type;
   int index;
   uint32_t pts;
+  bool independent;
 public:
-  cFrame(const uchar *Data, int Count, eFrameType = ftUnknown, int Index = -1, uint32_t Pts = 0);
+  cFrame(const uchar *Data, int Count, eFrameType = ftUnknown, int Index = -1, uint32_t Pts = 0, bool independent = false);
     ///< Creates a new cFrame object.
     ///< If Count is negative, the cFrame object will take ownership of the given
     ///< Data. Otherwise it will allocate Count bytes of memory and copy Data.
@@ -124,6 +125,7 @@ public:
   eFrameType Type(void) const { return type; }
   int Index(void) const { return index; }
   uint32_t Pts(void) const { return pts; }
+  bool Independent(void) const { return independent; }
   };
 
 class cRingBufferFrame : public cRingBuffer {