1 files changed, 80 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/rtp_rtcp/source/rtcp_packet/dlrr.h b/third_party/libwebrtc/modules/rtp_rtcp/source/rtcp_packet/dlrr.h
new file mode 100644
index 0000000000..ad91dfdcc6
--- /dev/null
+++ b/third_party/libwebrtc/modules/rtp_rtcp/source/rtcp_packet/dlrr.h
@@ -0,0 +1,80 @@
+/*
+ *  Copyright (c) 2015 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 MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_DLRR_H_
+#define MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_DLRR_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <vector>
+
+namespace webrtc {
+namespace rtcp {
+struct ReceiveTimeInfo {
+  // RFC 3611 4.5
+  ReceiveTimeInfo() : ssrc(0), last_rr(0), delay_since_last_rr(0) {}
+  ReceiveTimeInfo(uint32_t ssrc, uint32_t last_rr, uint32_t delay)
+      : ssrc(ssrc), last_rr(last_rr), delay_since_last_rr(delay) {}
+
+  uint32_t ssrc;
+  uint32_t last_rr;
+  uint32_t delay_since_last_rr;
+};
+
+inline bool operator==(const ReceiveTimeInfo& lhs, const ReceiveTimeInfo& rhs) {
+  return lhs.ssrc == rhs.ssrc && lhs.last_rr == rhs.last_rr &&
+         lhs.delay_since_last_rr == rhs.delay_since_last_rr;
+}
+
+inline bool operator!=(const ReceiveTimeInfo& lhs, const ReceiveTimeInfo& rhs) {
+  return !(lhs == rhs);
+}
+
+// DLRR Report Block: Delay since the Last Receiver Report (RFC 3611).
+class Dlrr {
+ public:
+  static const uint8_t kBlockType = 5;
+
+  Dlrr();
+  Dlrr(const Dlrr& other);
+  ~Dlrr();
+
+  Dlrr& operator=(const Dlrr& other) = default;
+
+  // Dlrr without items treated same as no dlrr block.
+  explicit operator bool() const { return !sub_blocks_.empty(); }
+
+  // Second parameter is value read from block header,
+  // i.e. size of block in 32bits excluding block header itself.
+  bool Parse(const uint8_t* buffer, uint16_t block_length_32bits);
+
+  size_t BlockLength() const;
+  // Fills buffer with the Dlrr.
+  // Consumes BlockLength() bytes.
+  void Create(uint8_t* buffer) const;
+
+  void ClearItems() { sub_blocks_.clear(); }
+  void AddDlrrItem(const ReceiveTimeInfo& time_info) {
+    sub_blocks_.push_back(time_info);
+  }
+
+  const std::vector<ReceiveTimeInfo>& sub_blocks() const { return sub_blocks_; }
+
+ private:
+  static const size_t kBlockHeaderLength = 4;
+  static const size_t kSubBlockLength = 12;
+
+  std::vector<ReceiveTimeInfo> sub_blocks_;
+};
+}  // namespace rtcp
+}  // namespace webrtc
+#endif  // MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_DLRR_H_