New jitter buffer experiment.

webrtc/modules/video_coding/rtp_frame_reference_finder.h

Index: webrtc/modules/video_coding/rtp_frame_reference_finder.h
diff --git a/webrtc/modules/video_coding/rtp_frame_reference_finder.h b/webrtc/modules/video_coding/rtp_frame_reference_finder.h
index e9e7d60a33155764719d992ff44511f8ab2e47c8..db1ddf80725b2e638744d467a54ac0e27bad3ad5 100644
--- a/webrtc/modules/video_coding/rtp_frame_reference_finder.h
+++ b/webrtc/modules/video_coding/rtp_frame_reference_finder.h
@@ -57,12 +57,12 @@ class RtpFrameReferenceFinder {
   void ClearTo(uint16_t seq_num);
 
  private:
-  static const uint16_t kPicIdLength = 1 << 7;
+  static const uint16_t kPicIdLength = 1 << 15;
   static const uint8_t kMaxTemporalLayers = 5;
-  static const int kMaxLayerInfo = 10;
-  static const int kMaxStashedFrames = 10;
-  static const int kMaxNotYetReceivedFrames = 20;
-  static const int kMaxGofSaved = 15;
+  static const int kMaxLayerInfo = 50;
+  static const int kMaxStashedFrames = 50;
+  static const int kMaxNotYetReceivedFrames = 100;
+  static const int kMaxGofSaved = 50;
   static const int kMaxPaddingAge = 100;
 
 
@@ -129,6 +129,24 @@ class RtpFrameReferenceFinder {
   // All picture ids are unwrapped to 16 bits.
   uint16_t UnwrapPictureId(uint16_t picture_id) EXCLUSIVE_LOCKS_REQUIRED(crit_);
 
+  // Returns true if the frame is old and should be dropped.
+  // TODO(philipel): Remove when VP9 PID/TL0 does not jump mid-stream (should be
+  //                 around M59).
+  bool Vp9PidTl0Fix(const RtpFrameObject& frame,
+                    int16_t* picture_id,
+                    int16_t* tl0_pic_idx) EXCLUSIVE_LOCKS_REQUIRED(crit_);
+
+  // TODO(philipel): Remove when VP9 PID/TL0 does not jump mid-stream (should be
+  //                 around M59).
+  bool DetectVp9PicIdJump(int fixed_pid,
+                          int fixed_tl0,
+                          uint32_t timestamp) const
+      EXCLUSIVE_LOCKS_REQUIRED(crit_);
+
+  // TODO(philipel): Remove when VP9 PID/TL0 does not jump mid-stream (should be
+  //                 around M59).
+  bool DetectVp9Tl0PicIdxJump(int fixed_tl0, uint32_t timestamp) const
+      EXCLUSIVE_LOCKS_REQUIRED(crit_);
 
   // For every group of pictures, hold two sequence numbers. The first being
   // the sequence number of the last packet of the last completed frame, and
@@ -196,6 +214,15 @@ class RtpFrameReferenceFinder {
   int cleared_to_seq_num_ GUARDED_BY(crit_);
 
   OnCompleteFrameCallback* frame_callback_;
+
+  // Vp9PidFix variables
+  // TODO(philipel): Remove when VP9 PID does not jump mid-stream.
+  int vp9_fix_last_timestamp_ = -1;
+  int vp9_fix_jump_timestamp_ = -1;
+  int vp9_fix_last_picture_id_ = -1;
+  int vp9_fix_pid_offset_ = 0;
+  int vp9_fix_last_tl0_pic_idx_ = -1;
+  int vp9_fix_tl0_pic_idx_offset_ = 0;
 };
 
 }  // namespace video_coding