Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 58 insertions, 0 deletions

diff --git a/third_party/libwebrtc/video/report_block_stats.h b/third_party/libwebrtc/video/report_block_stats.h
new file mode 100644
index 0000000000..1d1140295c
--- /dev/null
+++ b/third_party/libwebrtc/video/report_block_stats.h
@@ -0,0 +1,58 @@
+/*
+ *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef VIDEO_REPORT_BLOCK_STATS_H_
+#define VIDEO_REPORT_BLOCK_STATS_H_
+
+#include <stdint.h>
+
+#include <map>
+
+namespace webrtc {
+
+// TODO(nisse): Usefulness of this class is somewhat unclear. The inputs are
+// cumulative counters, from which we compute deltas, and then accumulate the
+// deltas. May be needed on the send side, to handle wraparound in the short
+// counters received over RTCP, but should not be needed on the receive side
+// where we can use large enough types for all counters we need.
+
+// Helper class for rtcp statistics.
+class ReportBlockStats {
+ public:
+  ReportBlockStats();
+  ~ReportBlockStats();
+
+  // Updates stats and stores report block.
+  void Store(uint32_t ssrc,
+             int packets_lost,
+             uint32_t extended_highest_sequence_number);
+
+  // Returns the total fraction of lost packets (or -1 if less than two report
+  // blocks have been stored).
+  int FractionLostInPercent() const;
+
+ private:
+  // The information from an RTCP report block that we need.
+  struct Report {
+    uint32_t extended_highest_sequence_number;
+    int32_t packets_lost;
+  };
+
+  // The total number of packets/lost packets.
+  uint32_t num_sequence_numbers_;
+  uint32_t num_lost_sequence_numbers_;
+
+  // Map holding the last stored report (mapped by the source SSRC).
+  std::map<uint32_t, Report> prev_reports_;
+};
+
+}  // namespace webrtc
+
+#endif  // VIDEO_REPORT_BLOCK_STATS_H_