1 files changed, 90 insertions, 0 deletions
diff --git a/third_party/libwebrtc/webrtc/media/base/rtputils.h b/third_party/libwebrtc/webrtc/media/base/rtputils.h
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index 0000000000..0b7205cf8f
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+++ b/third_party/libwebrtc/webrtc/media/base/rtputils.h
@@ -0,0 +1,90 @@
+/*
+ *  Copyright (c) 2011 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 MEDIA_BASE_RTPUTILS_H_
+#define MEDIA_BASE_RTPUTILS_H_
+
+#include "rtc_base/byteorder.h"
+
+namespace rtc {
+struct PacketTimeUpdateParams;
+}  // namespace rtc
+
+namespace cricket {
+
+const size_t kMinRtpPacketLen = 12;
+const size_t kMaxRtpPacketLen = 2048;
+const size_t kMinRtcpPacketLen = 4;
+
+struct RtpHeader {
+  int payload_type;
+  int seq_num;
+  uint32_t timestamp;
+  uint32_t ssrc;
+};
+
+enum RtcpTypes {
+  kRtcpTypeSR = 200,      // Sender report payload type.
+  kRtcpTypeRR = 201,      // Receiver report payload type.
+  kRtcpTypeSDES = 202,    // SDES payload type.
+  kRtcpTypeBye = 203,     // BYE payload type.
+  kRtcpTypeApp = 204,     // APP payload type.
+  kRtcpTypeRTPFB = 205,   // Transport layer Feedback message payload type.
+  kRtcpTypePSFB = 206,    // Payload-specific Feedback message payload type.
+};
+
+bool GetRtpPayloadType(const void* data, size_t len, int* value);
+bool GetRtpSeqNum(const void* data, size_t len, int* value);
+bool GetRtpTimestamp(const void* data, size_t len, uint32_t* value);
+bool GetRtpSsrc(const void* data, size_t len, uint32_t* value);
+bool GetRtpHeaderLen(const void* data, size_t len, size_t* value);
+bool GetRtcpType(const void* data, size_t len, int* value);
+bool GetRtcpSsrc(const void* data, size_t len, uint32_t* value);
+bool GetRtpHeader(const void* data, size_t len, RtpHeader* header);
+
+bool SetRtpSsrc(void* data, size_t len, uint32_t value);
+// Assumes version 2, no padding, no extensions, no csrcs.
+bool SetRtpHeader(void* data, size_t len, const RtpHeader& header);
+
+bool IsRtpPacket(const void* data, size_t len);
+
+// True if |payload type| is 0-127.
+bool IsValidRtpPayloadType(int payload_type);
+
+// True if |size| is appropriate for the indicated packet type.
+bool IsValidRtpRtcpPacketSize(bool rtcp, size_t size);
+
+// TODO(zstein): Consider using an enum instead of a bool to differentiate
+// between RTP and RTCP.
+// Returns "RTCP" or "RTP" according to |rtcp|.
+const char* RtpRtcpStringLiteral(bool rtcp);
+
+// Verifies that a packet has a valid RTP header.
+bool ValidateRtpHeader(const uint8_t* rtp,
+                       size_t length,
+                       size_t* header_length);
+
+// Helper method which updates the absolute send time extension if present.
+bool UpdateRtpAbsSendTimeExtension(uint8_t* rtp,
+                                   size_t length,
+                                   int extension_id,
+                                   uint64_t time_us);
+
+// Applies specified |options| to the packet. It updates the absolute send time
+// extension header if it is present present then updates HMAC.
+bool ApplyPacketOptions(uint8_t* data,
+                        size_t length,
+                        const rtc::PacketTimeUpdateParams& packet_time_params,
+                        uint64_t time_us);
+
+
+}  // namespace cricket
+
+#endif  // MEDIA_BASE_RTPUTILS_H_