[rtp_rtcp] rtcp::Rpsi moved into own file

webrtc/modules/rtp_rtcp/source/rtcp_packet/rpsi_unittest.cc

+/*
+ *  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.
+ */
+
+#include "webrtc/modules/rtp_rtcp/source/rtcp_packet/rpsi.h"
+
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+#include "webrtc/test/rtcp_packet_parser.h"
+
+using webrtc::rtcp::RawPacket;
+using webrtc::rtcp::Rpsi;
+using webrtc::test::RtcpPacketParser;
+
+namespace webrtc {
+
+TEST(RtcpPacketRpsiTest, WithOneByteNativeString) {
+  Rpsi rpsi;
+  // 1000001 (7 bits = 1 byte in native string).
+  const uint64_t kPictureId = 0x41;
+  const uint16_t kNumberOfValidBytes = 1;
+  rpsi.WithPayloadType(100);
+  rpsi.WithPictureId(kPictureId);
+
+  rtc::scoped_ptr<RawPacket> packet(rpsi.Build());
+  RtcpPacketParser parser;
+  parser.Parse(packet->Buffer(), packet->Length());
+  EXPECT_EQ(100, parser.rpsi()->PayloadType());
+  EXPECT_EQ(kNumberOfValidBytes * 8, parser.rpsi()->NumberOfValidBits());
+  EXPECT_EQ(kPictureId, parser.rpsi()->PictureId());
+}
+
+TEST(RtcpPacketRpsiTest, WithTwoByteNativeString) {
+  Rpsi rpsi;
+  // |1 0000001 (7 bits = 1 byte in native string).
+  const uint64_t kPictureId = 0x81;
+  const uint16_t kNumberOfValidBytes = 2;
+  rpsi.WithPictureId(kPictureId);
+
+  rtc::scoped_ptr<RawPacket> packet(rpsi.Build());
+  RtcpPacketParser parser;
+  parser.Parse(packet->Buffer(), packet->Length());
+  EXPECT_EQ(kNumberOfValidBytes * 8, parser.rpsi()->NumberOfValidBits());
+  EXPECT_EQ(kPictureId, parser.rpsi()->PictureId());
+}
+
+TEST(RtcpPacketRpsiTest, WithThreeByteNativeString) {
+  Rpsi rpsi;
+  // 10000|00 100000|0 1000000 (7 bits = 1 byte in native string).
+  const uint64_t kPictureId = 0x102040;
+  const uint16_t kNumberOfValidBytes = 3;
+  rpsi.WithPictureId(kPictureId);
+
+  rtc::scoped_ptr<RawPacket> packet(rpsi.Build());
+  RtcpPacketParser parser;
+  parser.Parse(packet->Buffer(), packet->Length());
+  EXPECT_EQ(kNumberOfValidBytes * 8, parser.rpsi()->NumberOfValidBits());
+  EXPECT_EQ(kPictureId, parser.rpsi()->PictureId());
+}
+
+TEST(RtcpPacketRpsiTest, WithFourByteNativeString) {
+  Rpsi rpsi;
+  // 1000|001 00001|01 100001|1 1000010 (7 bits = 1 byte in native string).
+  const uint64_t kPictureId = 0x84161C2;
+  const uint16_t kNumberOfValidBytes = 4;
+  rpsi.WithPictureId(kPictureId);
+
+  rtc::scoped_ptr<RawPacket> packet(rpsi.Build());
+  RtcpPacketParser parser;
+  parser.Parse(packet->Buffer(), packet->Length());
+  EXPECT_EQ(kNumberOfValidBytes * 8, parser.rpsi()->NumberOfValidBits());
+  EXPECT_EQ(kPictureId, parser.rpsi()->PictureId());
+}
+
+TEST(RtcpPacketRpsiTest, WithMaxPictureId) {
+  Rpsi rpsi;
+  // 1 1111111| 1111111 1|111111 11|11111 111|1111 1111|111 11111|
+  // 11 111111|1 1111111 (7 bits = 1 byte in native string).
+  const uint64_t kPictureId = 0xffffffffffffffff;
+  const uint16_t kNumberOfValidBytes = 10;
+  rpsi.WithPictureId(kPictureId);
+
+  rtc::scoped_ptr<RawPacket> packet(rpsi.Build());
+  RtcpPacketParser parser;
+  parser.Parse(packet->Buffer(), packet->Length());
+  EXPECT_EQ(kNumberOfValidBytes * 8, parser.rpsi()->NumberOfValidBits());
+  EXPECT_EQ(kPictureId, parser.rpsi()->PictureId());
+}
+
+}  // namespace webrtc