[rtp_rtcp] rtcp::Rpsi moved into own file

webrtc/modules/rtp_rtcp/source/rtcp_packet/rpsi.h

 /*
  *  Copyright (c) 2016 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 WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_FIR_H_
-#define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_FIR_H_
+#ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_RPSI_H_
+#define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_RPSI_H_
 
 #include "webrtc/base/basictypes.h"
 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet.h"
 #include "webrtc/modules/rtp_rtcp/source/rtcp_utility.h"
 
 namespace webrtc {
 namespace rtcp {
-
-// Full intra request (FIR) (RFC 5104).
-class Fir : public RtcpPacket {
+// Reference picture selection indication (RPSI) (RFC 4585).
+class Rpsi : public RtcpPacket {
  public:
-  Fir() : RtcpPacket() {
-    memset(&fir_, 0, sizeof(fir_));
-    memset(&fir_item_, 0, sizeof(fir_item_));
+  Rpsi()
+      : RtcpPacket(),
+        padding_bytes_(0) {
+    memset(&rpsi_, 0, sizeof(rpsi_));
   }
 
-  virtual ~Fir() {}
+  virtual ~Rpsi() {}
 
   void From(uint32_t ssrc) {
-    fir_.SenderSSRC = ssrc;
+    rpsi_.SenderSSRC = ssrc;
   }
   void To(uint32_t ssrc) {
-    fir_item_.SSRC = ssrc;
+    rpsi_.MediaSSRC = ssrc;
   }
-  void WithCommandSeqNum(uint8_t seq_num) {
-    fir_item_.CommandSequenceNumber = seq_num;
+  void WithPayloadType(uint8_t payload) {
+    assert(payload <= 0x7f);
+    rpsi_.PayloadType = payload;
   }
+  void WithPictureId(uint64_t picture_id);
 
  protected:
   bool Create(uint8_t* packet,
               size_t* index,
               size_t max_length,
               RtcpPacket::PacketReadyCallback* callback) const override;
 
  private:
   size_t BlockLength() const {
-    const size_t kFciLength = 8;
-    return kCommonFbFmtLength + kFciLength;
+    size_t fci_length = 2 + (rpsi_.NumberOfValidBits / 8) + padding_bytes_;
+    return kCommonFbFmtLength + fci_length;
   }
 
-  RTCPUtility::RTCPPacketPSFBFIR fir_;
-  RTCPUtility::RTCPPacketPSFBFIRItem fir_item_;
+  uint8_t padding_bytes_;
+  RTCPUtility::RTCPPacketPSFBRPSI rpsi_;
+
+  RTC_DISALLOW_COPY_AND_ASSIGN(Rpsi);
 };
-
 }  // namespace rtcp
 }  // namespace webrtc
-#endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_FIR_H_
+#endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_RPSI_H_