Add NACK and RPSI packet types to RTCP packet builder.
Fixes bug found when parsing received RPSI packet.

BUG=2450
R=mflodman@webrtc.org, stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/17419004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6194 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/test/rtcp_packet_parser.cc b/webrtc/test/rtcp_packet_parser.cc
index 2e5880e..9ae8543 100644
--- a/webrtc/test/rtcp_packet_parser.cc
+++ b/webrtc/test/rtcp_packet_parser.cc
@@ -23,25 +23,54 @@
   for (RTCPUtility::RTCPPacketTypes type = parser.Begin();
       type != RTCPUtility::kRtcpNotValidCode;
       type = parser.Iterate()) {
-    if (type == RTCPUtility::kRtcpSrCode) {
-      sender_report_.Set(parser.Packet().SR);
-    } else if (type == RTCPUtility::kRtcpRrCode) {
-      receiver_report_.Set(parser.Packet().RR);
-    } else if (type == RTCPUtility::kRtcpByeCode) {
-      bye_.Set(parser.Packet().BYE);
-    } else if (type == RTCPUtility::kRtcpReportBlockItemCode) {
-      report_block_.Set(parser.Packet().ReportBlockItem);
-      ++report_blocks_per_ssrc_[parser.Packet().ReportBlockItem.SSRC];
-    } else if (type == RTCPUtility::kRtcpPsfbFirCode) {
-      fir_.Set(parser.Packet().FIR);
-    } else if (type == webrtc::RTCPUtility::kRtcpPsfbFirItemCode) {
-      fir_item_.Set(parser.Packet().FIRItem);
-    } else if (type == RTCPUtility::kRtcpRtpfbNackCode) {
-      nack_.Set(parser.Packet().NACK);
-    } else if (type == RTCPUtility::kRtcpRtpfbNackItemCode) {
-      nack_item_.Set(parser.Packet().NACKItem);
+    switch (type) {
+      case RTCPUtility::kRtcpSrCode:
+        sender_report_.Set(parser.Packet().SR);
+        break;
+      case RTCPUtility::kRtcpRrCode:
+        receiver_report_.Set(parser.Packet().RR);
+        break;
+      case RTCPUtility::kRtcpByeCode:
+        bye_.Set(parser.Packet().BYE);
+        break;
+      case RTCPUtility::kRtcpReportBlockItemCode:
+        report_block_.Set(parser.Packet().ReportBlockItem);
+        ++report_blocks_per_ssrc_[parser.Packet().ReportBlockItem.SSRC];
+        break;
+      case RTCPUtility::kRtcpPsfbRpsiCode:
+        rpsi_.Set(parser.Packet().RPSI);
+        break;
+      case RTCPUtility::kRtcpPsfbFirCode:
+        fir_.Set(parser.Packet().FIR);
+        break;
+      case RTCPUtility::kRtcpPsfbFirItemCode:
+        fir_item_.Set(parser.Packet().FIRItem);
+        break;
+      case RTCPUtility::kRtcpRtpfbNackCode:
+        nack_.Set(parser.Packet().NACK);
+        nack_item_.Clear();
+        break;
+      case RTCPUtility::kRtcpRtpfbNackItemCode:
+        nack_item_.Set(parser.Packet().NACKItem);
+        break;
+      default:
+        break;
     }
   }
 }
+
+uint64_t Rpsi::PictureId() const {
+  assert(num_packets_ > 0);
+  uint16_t num_bytes = rpsi_.NumberOfValidBits / 8;
+  assert(num_bytes > 0);
+  uint64_t picture_id = 0;
+  for (uint16_t i = 0; i < num_bytes - 1; ++i) {
+    picture_id += (rpsi_.NativeBitString[i] & 0x7f);
+    picture_id <<= 7;
+  }
+  picture_id += (rpsi_.NativeBitString[num_bytes - 1] & 0x7f);
+  return picture_id;
+}
+
 }  // namespace test
 }  // namespace webrtc