Implement FrameMarking header extension support

webrtc/modules/rtp_rtcp/source/rtp_header_extensions.h

Index: webrtc/modules/rtp_rtcp/source/rtp_header_extensions.h
diff --git a/webrtc/modules/rtp_rtcp/source/rtp_header_extensions.h b/webrtc/modules/rtp_rtcp/source/rtp_header_extensions.h
index d3e72ebd22af9b294d04daa432d5f14e40ad57f4..619836c2a1ba902df63c18aed645d66b4f476b02 100644
--- a/webrtc/modules/rtp_rtcp/source/rtp_header_extensions.h
+++ b/webrtc/modules/rtp_rtcp/source/rtp_header_extensions.h
@@ -156,5 +156,17 @@ class RepairedRtpStreamId {
   static bool Write(uint8_t* data, const std::string& rsid);
 };
 
+class FrameMarking {
+ public:
+  static constexpr RTPExtensionType kId = kRtpExtensionFrameMarking;
+  static constexpr const char* kUri = "urn:ietf:params:rtp-hdrext:framemarking";
+  static bool Parse(rtc::ArrayView<const uint8_t> data,
+                    FrameMarks* frame_marks);
+  static size_t ValueSize(const FrameMarks& frame_marks);
+  static bool Write(uint8_t* data, const FrameMarks& frame_marks);
+
+  static uint8_t CreateLayerId(RTPVideoHeaderVP9 vp9);

[danilchap, 2017/06/30 12:53:25]

probably
const RTPVideoHeaderVP9&
(that struct is large and thus not cheaply copyable or cheaply movable)

[sergio.garcia.murillo, 2017/06/30 13:42:00]

Indeed. Done.

+};
+
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTP_HEADER_EXTENSIONS_H_