media/base/streamparams_unittest.cc - src/webrtc - Git at Google

 /*
  *  Copyright (c) 2012 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/media/base/streamparams.h"
 #include "webrtc/media/base/testutils.h"
 #include "webrtc/rtc_base/arraysize.h"
 #include "webrtc/rtc_base/gunit.h"

 static const uint32_t kSsrcs1[] = {1};
 static const uint32_t kSsrcs2[] = {1, 2};
 static const uint32_t kSsrcs3[] = {1, 2, 3};
 static const uint32_t kRtxSsrcs3[] = {4, 5, 6};

 static cricket::StreamParams CreateStreamParamsWithSsrcGroup(
     const std::string& semantics,
     const uint32_t ssrcs_in[],
     size_t len) {
   cricket::StreamParams stream;
   std::vector<uint32_t> ssrcs(ssrcs_in, ssrcs_in + len);
   cricket::SsrcGroup sg(semantics, ssrcs);
   stream.ssrcs = ssrcs;
   stream.ssrc_groups.push_back(sg);
   return stream;
 }

 TEST(SsrcGroup, EqualNotEqual) {
   cricket::SsrcGroup ssrc_groups[] = {
     cricket::SsrcGroup("ABC", MAKE_VECTOR(kSsrcs1)),
     cricket::SsrcGroup("ABC", MAKE_VECTOR(kSsrcs2)),
     cricket::SsrcGroup("Abc", MAKE_VECTOR(kSsrcs2)),
     cricket::SsrcGroup("abc", MAKE_VECTOR(kSsrcs2)),
   };

   for (size_t i = 0; i < arraysize(ssrc_groups); ++i) {
     for (size_t j = 0; j < arraysize(ssrc_groups); ++j) {
       EXPECT_EQ((ssrc_groups[i] == ssrc_groups[j]), (i == j));
       EXPECT_EQ((ssrc_groups[i] != ssrc_groups[j]), (i != j));
     }
   }
 }

 TEST(SsrcGroup, HasSemantics) {
   cricket::SsrcGroup sg1("ABC", MAKE_VECTOR(kSsrcs1));
   EXPECT_TRUE(sg1.has_semantics("ABC"));

   cricket::SsrcGroup sg2("Abc", MAKE_VECTOR(kSsrcs1));
   EXPECT_FALSE(sg2.has_semantics("ABC"));

   cricket::SsrcGroup sg3("abc", MAKE_VECTOR(kSsrcs1));
   EXPECT_FALSE(sg3.has_semantics("ABC"));
 }

 TEST(SsrcGroup, ToString) {
   cricket::SsrcGroup sg1("ABC", MAKE_VECTOR(kSsrcs1));
   EXPECT_STREQ("{semantics:ABC;ssrcs:[1]}", sg1.ToString().c_str());
 }

 TEST(StreamParams, CreateLegacy) {
   const uint32_t ssrc = 7;
   cricket::StreamParams one_sp = cricket::StreamParams::CreateLegacy(ssrc);
   EXPECT_EQ(1U, one_sp.ssrcs.size());
   EXPECT_EQ(ssrc, one_sp.first_ssrc());
   EXPECT_TRUE(one_sp.has_ssrcs());
   EXPECT_TRUE(one_sp.has_ssrc(ssrc));
   EXPECT_FALSE(one_sp.has_ssrc(ssrc+1));
   EXPECT_FALSE(one_sp.has_ssrc_groups());
   EXPECT_EQ(0U, one_sp.ssrc_groups.size());
 }

 TEST(StreamParams, HasSsrcGroup) {
   cricket::StreamParams sp =
       CreateStreamParamsWithSsrcGroup("XYZ", kSsrcs2, arraysize(kSsrcs2));
   EXPECT_EQ(2U, sp.ssrcs.size());
   EXPECT_EQ(kSsrcs2[0], sp.first_ssrc());
   EXPECT_TRUE(sp.has_ssrcs());
   EXPECT_TRUE(sp.has_ssrc(kSsrcs2[0]));
   EXPECT_TRUE(sp.has_ssrc(kSsrcs2[1]));
   EXPECT_TRUE(sp.has_ssrc_group("XYZ"));
   EXPECT_EQ(1U, sp.ssrc_groups.size());
   EXPECT_EQ(2U, sp.ssrc_groups[0].ssrcs.size());
   EXPECT_EQ(kSsrcs2[0], sp.ssrc_groups[0].ssrcs[0]);
   EXPECT_EQ(kSsrcs2[1], sp.ssrc_groups[0].ssrcs[1]);
 }

 TEST(StreamParams, GetSsrcGroup) {
   cricket::StreamParams sp =
       CreateStreamParamsWithSsrcGroup("XYZ", kSsrcs2, arraysize(kSsrcs2));
   EXPECT_EQ(NULL, sp.get_ssrc_group("xyz"));
   EXPECT_EQ(&sp.ssrc_groups[0], sp.get_ssrc_group("XYZ"));
 }

 TEST(StreamParams, EqualNotEqual) {
   cricket::StreamParams l1 = cricket::StreamParams::CreateLegacy(1);
   cricket::StreamParams l2 = cricket::StreamParams::CreateLegacy(2);
   cricket::StreamParams sg1 =
       CreateStreamParamsWithSsrcGroup("ABC", kSsrcs1, arraysize(kSsrcs1));
   cricket::StreamParams sg2 =
       CreateStreamParamsWithSsrcGroup("ABC", kSsrcs2, arraysize(kSsrcs2));
   cricket::StreamParams sg3 =
       CreateStreamParamsWithSsrcGroup("Abc", kSsrcs2, arraysize(kSsrcs2));
   cricket::StreamParams sg4 =
       CreateStreamParamsWithSsrcGroup("abc", kSsrcs2, arraysize(kSsrcs2));
   cricket::StreamParams sps[] = {l1, l2, sg1, sg2, sg3, sg4};

   for (size_t i = 0; i < arraysize(sps); ++i) {
     for (size_t j = 0; j < arraysize(sps); ++j) {
       EXPECT_EQ((sps[i] == sps[j]), (i == j));
       EXPECT_EQ((sps[i] != sps[j]), (i != j));
     }
   }
 }

 TEST(StreamParams, FidFunctions) {
   uint32_t fid_ssrc;

   cricket::StreamParams sp = cricket::StreamParams::CreateLegacy(1);
   EXPECT_FALSE(sp.AddFidSsrc(10, 20));
   EXPECT_TRUE(sp.AddFidSsrc(1, 2));
   EXPECT_TRUE(sp.GetFidSsrc(1, &fid_ssrc));
   EXPECT_EQ(2u, fid_ssrc);
   EXPECT_FALSE(sp.GetFidSsrc(15, &fid_ssrc));

   sp.add_ssrc(20);
   EXPECT_TRUE(sp.AddFidSsrc(20, 30));
   EXPECT_TRUE(sp.GetFidSsrc(20, &fid_ssrc));
   EXPECT_EQ(30u, fid_ssrc);

   // Manually create SsrcGroup to test bounds-checking
   // in GetSecondarySsrc. We construct an invalid StreamParams
   // for this.
   std::vector<uint32_t> fid_vector;
   fid_vector.push_back(13);
   cricket::SsrcGroup invalid_fid_group(cricket::kFidSsrcGroupSemantics,
                                         fid_vector);
   cricket::StreamParams sp_invalid;
   sp_invalid.add_ssrc(13);
   sp_invalid.ssrc_groups.push_back(invalid_fid_group);
   EXPECT_FALSE(sp_invalid.GetFidSsrc(13, &fid_ssrc));
 }

 TEST(StreamParams, GetPrimaryAndFidSsrcs) {
   cricket::StreamParams sp;
   sp.ssrcs.push_back(1);
   sp.ssrcs.push_back(2);
   sp.ssrcs.push_back(3);

   std::vector<uint32_t> primary_ssrcs;
   sp.GetPrimarySsrcs(&primary_ssrcs);
   std::vector<uint32_t> fid_ssrcs;
   sp.GetFidSsrcs(primary_ssrcs, &fid_ssrcs);
   ASSERT_EQ(1u, primary_ssrcs.size());
   EXPECT_EQ(1u, primary_ssrcs[0]);
   ASSERT_EQ(0u, fid_ssrcs.size());

   sp.ssrc_groups.push_back(
       cricket::SsrcGroup(cricket::kSimSsrcGroupSemantics, sp.ssrcs));
   sp.AddFidSsrc(1, 10);
   sp.AddFidSsrc(2, 20);

   primary_ssrcs.clear();
   sp.GetPrimarySsrcs(&primary_ssrcs);
   fid_ssrcs.clear();
   sp.GetFidSsrcs(primary_ssrcs, &fid_ssrcs);
   ASSERT_EQ(3u, primary_ssrcs.size());
   EXPECT_EQ(1u, primary_ssrcs[0]);
   EXPECT_EQ(2u, primary_ssrcs[1]);
   EXPECT_EQ(3u, primary_ssrcs[2]);
   ASSERT_EQ(2u, fid_ssrcs.size());
   EXPECT_EQ(10u, fid_ssrcs[0]);
   EXPECT_EQ(20u, fid_ssrcs[1]);
 }

 TEST(StreamParams, FecFrFunctions) {
   uint32_t fecfr_ssrc;

   cricket::StreamParams sp = cricket::StreamParams::CreateLegacy(1);
   EXPECT_FALSE(sp.AddFecFrSsrc(10, 20));
   EXPECT_TRUE(sp.AddFecFrSsrc(1, 2));
   EXPECT_TRUE(sp.GetFecFrSsrc(1, &fecfr_ssrc));
   EXPECT_EQ(2u, fecfr_ssrc);
   EXPECT_FALSE(sp.GetFecFrSsrc(15, &fecfr_ssrc));

   sp.add_ssrc(20);
   EXPECT_TRUE(sp.AddFecFrSsrc(20, 30));
   EXPECT_TRUE(sp.GetFecFrSsrc(20, &fecfr_ssrc));
   EXPECT_EQ(30u, fecfr_ssrc);

   // Manually create SsrcGroup to test bounds-checking
   // in GetSecondarySsrc. We construct an invalid StreamParams
   // for this.
   std::vector<uint32_t> fecfr_vector;
   fecfr_vector.push_back(13);
   cricket::SsrcGroup invalid_fecfr_group(cricket::kFecFrSsrcGroupSemantics,
                                          fecfr_vector);
   cricket::StreamParams sp_invalid;
   sp_invalid.add_ssrc(13);
   sp_invalid.ssrc_groups.push_back(invalid_fecfr_group);
   EXPECT_FALSE(sp_invalid.GetFecFrSsrc(13, &fecfr_ssrc));
 }

 TEST(StreamParams, ToString) {
   cricket::StreamParams sp =
       CreateStreamParamsWithSsrcGroup("XYZ", kSsrcs2, arraysize(kSsrcs2));
   EXPECT_STREQ("{ssrcs:[1,2];ssrc_groups:{semantics:XYZ;ssrcs:[1,2]};}",
                sp.ToString().c_str());
 }

 TEST(StreamParams, TestIsOneSsrcStream_LegacyStream) {
   EXPECT_TRUE(
       cricket::IsOneSsrcStream(cricket::StreamParams::CreateLegacy(13)));
 }

 TEST(StreamParams, TestIsOneSsrcStream_SingleRtxStream) {
   cricket::StreamParams stream;
   stream.add_ssrc(13);
   EXPECT_TRUE(stream.AddFidSsrc(13, 14));
   EXPECT_TRUE(cricket::IsOneSsrcStream(stream));
 }

 TEST(StreamParams, TestIsOneSsrcStream_SingleFlexfecStream) {
   cricket::StreamParams stream;
   stream.add_ssrc(13);
   EXPECT_TRUE(stream.AddFecFrSsrc(13, 14));
   EXPECT_TRUE(cricket::IsOneSsrcStream(stream));
 }

 TEST(StreamParams, TestIsOneSsrcStream_SingleFlexfecAndRtxStream) {
   cricket::StreamParams stream;
   stream.add_ssrc(13);
   EXPECT_TRUE(stream.AddFecFrSsrc(13, 14));
   EXPECT_TRUE(stream.AddFidSsrc(13, 15));
   EXPECT_TRUE(cricket::IsOneSsrcStream(stream));
 }

 TEST(StreamParams, TestIsOneSsrcStream_SimulcastStream) {
   EXPECT_FALSE(cricket::IsOneSsrcStream(
       cricket::CreateSimStreamParams("cname", MAKE_VECTOR(kSsrcs2))));
   EXPECT_FALSE(cricket::IsOneSsrcStream(
       cricket::CreateSimStreamParams("cname", MAKE_VECTOR(kSsrcs3))));
 }

 TEST(StreamParams, TestIsOneSsrcStream_SimRtxStream) {
   cricket::StreamParams stream =
       cricket::CreateSimWithRtxStreamParams("cname",
                                             MAKE_VECTOR(kSsrcs3),
                                             MAKE_VECTOR(kRtxSsrcs3));
   EXPECT_FALSE(cricket::IsOneSsrcStream(stream));
 }

 TEST(StreamParams, TestIsSimulcastStream_LegacyStream) {
   EXPECT_FALSE(
       cricket::IsSimulcastStream(cricket::StreamParams::CreateLegacy(13)));
 }

 TEST(StreamParams, TestIsSimulcastStream_SingleRtxStream) {
   cricket::StreamParams stream;
   stream.add_ssrc(13);
   EXPECT_TRUE(stream.AddFidSsrc(13, 14));
   EXPECT_FALSE(cricket::IsSimulcastStream(stream));
 }

 TEST(StreamParams, TestIsSimulcastStream_SimulcastStream) {
   EXPECT_TRUE(cricket::IsSimulcastStream(
       cricket::CreateSimStreamParams("cname", MAKE_VECTOR(kSsrcs2))));
   EXPECT_TRUE(cricket::IsSimulcastStream(
       cricket::CreateSimStreamParams("cname", MAKE_VECTOR(kSsrcs3))));
 }

 TEST(StreamParams, TestIsSimulcastStream_SimRtxStream) {
   cricket::StreamParams stream =
       cricket::CreateSimWithRtxStreamParams("cname",
                                             MAKE_VECTOR(kSsrcs3),
                                             MAKE_VECTOR(kRtxSsrcs3));
   EXPECT_TRUE(cricket::IsSimulcastStream(stream));
 }

 TEST(StreamParams, TestIsSimulcastStream_InvalidStreams) {
   // stream1 has extra non-sim, non-fid ssrc.
   cricket::StreamParams stream1 =
       cricket::CreateSimWithRtxStreamParams("cname",
                                             MAKE_VECTOR(kSsrcs3),
                                             MAKE_VECTOR(kRtxSsrcs3));
   stream1.add_ssrc(25);
   EXPECT_FALSE(cricket::IsSimulcastStream(stream1));

   // stream2 has invalid fid-group (no primary).
   cricket::StreamParams stream2;
   stream2.add_ssrc(13);
   EXPECT_TRUE(stream2.AddFidSsrc(13, 14));
   std::remove(stream2.ssrcs.begin(), stream2.ssrcs.end(), 13u);
   EXPECT_FALSE(cricket::IsSimulcastStream(stream2));

   // stream3 has two SIM groups.
   cricket::StreamParams stream3 =
       cricket::CreateSimStreamParams("cname", MAKE_VECTOR(kSsrcs2));
   std::vector<uint32_t> sim_ssrcs = MAKE_VECTOR(kRtxSsrcs3);
   cricket::SsrcGroup sg(cricket::kSimSsrcGroupSemantics, sim_ssrcs);
   for (size_t i = 0; i < sim_ssrcs.size(); i++) {
     stream3.add_ssrc(sim_ssrcs[i]);
   }
   stream3.ssrc_groups.push_back(sg);
   EXPECT_FALSE(cricket::IsSimulcastStream(stream3));
 }
	/*
	* Copyright (c) 2012 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/media/base/streamparams.h"
	#include "webrtc/media/base/testutils.h"
	#include "webrtc/rtc_base/arraysize.h"
	#include "webrtc/rtc_base/gunit.h"

	static const uint32_t kSsrcs1[] = {1};
	static const uint32_t kSsrcs2[] = {1, 2};
	static const uint32_t kSsrcs3[] = {1, 2, 3};
	static const uint32_t kRtxSsrcs3[] = {4, 5, 6};

	static cricket::StreamParams CreateStreamParamsWithSsrcGroup(
	const std::string& semantics,
	const uint32_t ssrcs_in[],
	size_t len) {
	cricket::StreamParams stream;
	std::vector<uint32_t> ssrcs(ssrcs_in, ssrcs_in + len);
	cricket::SsrcGroup sg(semantics, ssrcs);
	stream.ssrcs = ssrcs;
	stream.ssrc_groups.push_back(sg);
	return stream;
	}

	TEST(SsrcGroup, EqualNotEqual) {
	cricket::SsrcGroup ssrc_groups[] = {
	cricket::SsrcGroup("ABC", MAKE_VECTOR(kSsrcs1)),
	cricket::SsrcGroup("ABC", MAKE_VECTOR(kSsrcs2)),
	cricket::SsrcGroup("Abc", MAKE_VECTOR(kSsrcs2)),
	cricket::SsrcGroup("abc", MAKE_VECTOR(kSsrcs2)),
	};

	for (size_t i = 0; i < arraysize(ssrc_groups); ++i) {
	for (size_t j = 0; j < arraysize(ssrc_groups); ++j) {
	EXPECT_EQ((ssrc_groups[i] == ssrc_groups[j]), (i == j));
	EXPECT_EQ((ssrc_groups[i] != ssrc_groups[j]), (i != j));
	}
	}
	}

	TEST(SsrcGroup, HasSemantics) {
	cricket::SsrcGroup sg1("ABC", MAKE_VECTOR(kSsrcs1));
	EXPECT_TRUE(sg1.has_semantics("ABC"));

	cricket::SsrcGroup sg2("Abc", MAKE_VECTOR(kSsrcs1));
	EXPECT_FALSE(sg2.has_semantics("ABC"));

	cricket::SsrcGroup sg3("abc", MAKE_VECTOR(kSsrcs1));
	EXPECT_FALSE(sg3.has_semantics("ABC"));
	}

	TEST(SsrcGroup, ToString) {
	cricket::SsrcGroup sg1("ABC", MAKE_VECTOR(kSsrcs1));
	EXPECT_STREQ("{semantics:ABC;ssrcs:[1]}", sg1.ToString().c_str());
	}

	TEST(StreamParams, CreateLegacy) {
	const uint32_t ssrc = 7;
	cricket::StreamParams one_sp = cricket::StreamParams::CreateLegacy(ssrc);
	EXPECT_EQ(1U, one_sp.ssrcs.size());
	EXPECT_EQ(ssrc, one_sp.first_ssrc());
	EXPECT_TRUE(one_sp.has_ssrcs());
	EXPECT_TRUE(one_sp.has_ssrc(ssrc));
	EXPECT_FALSE(one_sp.has_ssrc(ssrc+1));
	EXPECT_FALSE(one_sp.has_ssrc_groups());
	EXPECT_EQ(0U, one_sp.ssrc_groups.size());
	}

	TEST(StreamParams, HasSsrcGroup) {
	cricket::StreamParams sp =
	CreateStreamParamsWithSsrcGroup("XYZ", kSsrcs2, arraysize(kSsrcs2));
	EXPECT_EQ(2U, sp.ssrcs.size());
	EXPECT_EQ(kSsrcs2[0], sp.first_ssrc());
	EXPECT_TRUE(sp.has_ssrcs());
	EXPECT_TRUE(sp.has_ssrc(kSsrcs2[0]));
	EXPECT_TRUE(sp.has_ssrc(kSsrcs2[1]));
	EXPECT_TRUE(sp.has_ssrc_group("XYZ"));
	EXPECT_EQ(1U, sp.ssrc_groups.size());
	EXPECT_EQ(2U, sp.ssrc_groups[0].ssrcs.size());
	EXPECT_EQ(kSsrcs2[0], sp.ssrc_groups[0].ssrcs[0]);
	EXPECT_EQ(kSsrcs2[1], sp.ssrc_groups[0].ssrcs[1]);
	}

	TEST(StreamParams, GetSsrcGroup) {
	cricket::StreamParams sp =
	CreateStreamParamsWithSsrcGroup("XYZ", kSsrcs2, arraysize(kSsrcs2));
	EXPECT_EQ(NULL, sp.get_ssrc_group("xyz"));
	EXPECT_EQ(&sp.ssrc_groups[0], sp.get_ssrc_group("XYZ"));
	}

	TEST(StreamParams, EqualNotEqual) {
	cricket::StreamParams l1 = cricket::StreamParams::CreateLegacy(1);
	cricket::StreamParams l2 = cricket::StreamParams::CreateLegacy(2);
	cricket::StreamParams sg1 =
	CreateStreamParamsWithSsrcGroup("ABC", kSsrcs1, arraysize(kSsrcs1));
	cricket::StreamParams sg2 =
	CreateStreamParamsWithSsrcGroup("ABC", kSsrcs2, arraysize(kSsrcs2));
	cricket::StreamParams sg3 =
	CreateStreamParamsWithSsrcGroup("Abc", kSsrcs2, arraysize(kSsrcs2));
	cricket::StreamParams sg4 =
	CreateStreamParamsWithSsrcGroup("abc", kSsrcs2, arraysize(kSsrcs2));
	cricket::StreamParams sps[] = {l1, l2, sg1, sg2, sg3, sg4};

	for (size_t i = 0; i < arraysize(sps); ++i) {
	for (size_t j = 0; j < arraysize(sps); ++j) {
	EXPECT_EQ((sps[i] == sps[j]), (i == j));
	EXPECT_EQ((sps[i] != sps[j]), (i != j));
	}
	}
	}

	TEST(StreamParams, FidFunctions) {
	uint32_t fid_ssrc;

	cricket::StreamParams sp = cricket::StreamParams::CreateLegacy(1);
	EXPECT_FALSE(sp.AddFidSsrc(10, 20));
	EXPECT_TRUE(sp.AddFidSsrc(1, 2));
	EXPECT_TRUE(sp.GetFidSsrc(1, &fid_ssrc));
	EXPECT_EQ(2u, fid_ssrc);
	EXPECT_FALSE(sp.GetFidSsrc(15, &fid_ssrc));

	sp.add_ssrc(20);
	EXPECT_TRUE(sp.AddFidSsrc(20, 30));
	EXPECT_TRUE(sp.GetFidSsrc(20, &fid_ssrc));
	EXPECT_EQ(30u, fid_ssrc);

	// Manually create SsrcGroup to test bounds-checking
	// in GetSecondarySsrc. We construct an invalid StreamParams
	// for this.
	std::vector<uint32_t> fid_vector;
	fid_vector.push_back(13);
	cricket::SsrcGroup invalid_fid_group(cricket::kFidSsrcGroupSemantics,
	fid_vector);
	cricket::StreamParams sp_invalid;
	sp_invalid.add_ssrc(13);
	sp_invalid.ssrc_groups.push_back(invalid_fid_group);
	EXPECT_FALSE(sp_invalid.GetFidSsrc(13, &fid_ssrc));
	}

	TEST(StreamParams, GetPrimaryAndFidSsrcs) {
	cricket::StreamParams sp;
	sp.ssrcs.push_back(1);
	sp.ssrcs.push_back(2);
	sp.ssrcs.push_back(3);

	std::vector<uint32_t> primary_ssrcs;
	sp.GetPrimarySsrcs(&primary_ssrcs);
	std::vector<uint32_t> fid_ssrcs;
	sp.GetFidSsrcs(primary_ssrcs, &fid_ssrcs);
	ASSERT_EQ(1u, primary_ssrcs.size());
	EXPECT_EQ(1u, primary_ssrcs[0]);
	ASSERT_EQ(0u, fid_ssrcs.size());

	sp.ssrc_groups.push_back(
	cricket::SsrcGroup(cricket::kSimSsrcGroupSemantics, sp.ssrcs));
	sp.AddFidSsrc(1, 10);
	sp.AddFidSsrc(2, 20);

	primary_ssrcs.clear();
	sp.GetPrimarySsrcs(&primary_ssrcs);
	fid_ssrcs.clear();
	sp.GetFidSsrcs(primary_ssrcs, &fid_ssrcs);
	ASSERT_EQ(3u, primary_ssrcs.size());
	EXPECT_EQ(1u, primary_ssrcs[0]);
	EXPECT_EQ(2u, primary_ssrcs[1]);
	EXPECT_EQ(3u, primary_ssrcs[2]);
	ASSERT_EQ(2u, fid_ssrcs.size());
	EXPECT_EQ(10u, fid_ssrcs[0]);
	EXPECT_EQ(20u, fid_ssrcs[1]);
	}

	TEST(StreamParams, FecFrFunctions) {
	uint32_t fecfr_ssrc;

	cricket::StreamParams sp = cricket::StreamParams::CreateLegacy(1);
	EXPECT_FALSE(sp.AddFecFrSsrc(10, 20));
	EXPECT_TRUE(sp.AddFecFrSsrc(1, 2));
	EXPECT_TRUE(sp.GetFecFrSsrc(1, &fecfr_ssrc));
	EXPECT_EQ(2u, fecfr_ssrc);
	EXPECT_FALSE(sp.GetFecFrSsrc(15, &fecfr_ssrc));

	sp.add_ssrc(20);
	EXPECT_TRUE(sp.AddFecFrSsrc(20, 30));
	EXPECT_TRUE(sp.GetFecFrSsrc(20, &fecfr_ssrc));
	EXPECT_EQ(30u, fecfr_ssrc);

	// Manually create SsrcGroup to test bounds-checking
	// in GetSecondarySsrc. We construct an invalid StreamParams
	// for this.
	std::vector<uint32_t> fecfr_vector;
	fecfr_vector.push_back(13);
	cricket::SsrcGroup invalid_fecfr_group(cricket::kFecFrSsrcGroupSemantics,
	fecfr_vector);
	cricket::StreamParams sp_invalid;
	sp_invalid.add_ssrc(13);
	sp_invalid.ssrc_groups.push_back(invalid_fecfr_group);
	EXPECT_FALSE(sp_invalid.GetFecFrSsrc(13, &fecfr_ssrc));
	}

	TEST(StreamParams, ToString) {
	cricket::StreamParams sp =
	CreateStreamParamsWithSsrcGroup("XYZ", kSsrcs2, arraysize(kSsrcs2));
	EXPECT_STREQ("{ssrcs:[1,2];ssrc_groups:{semantics:XYZ;ssrcs:[1,2]};}",
	sp.ToString().c_str());
	}

	TEST(StreamParams, TestIsOneSsrcStream_LegacyStream) {
	EXPECT_TRUE(
	cricket::IsOneSsrcStream(cricket::StreamParams::CreateLegacy(13)));
	}

	TEST(StreamParams, TestIsOneSsrcStream_SingleRtxStream) {
	cricket::StreamParams stream;
	stream.add_ssrc(13);
	EXPECT_TRUE(stream.AddFidSsrc(13, 14));
	EXPECT_TRUE(cricket::IsOneSsrcStream(stream));
	}

	TEST(StreamParams, TestIsOneSsrcStream_SingleFlexfecStream) {
	cricket::StreamParams stream;
	stream.add_ssrc(13);
	EXPECT_TRUE(stream.AddFecFrSsrc(13, 14));
	EXPECT_TRUE(cricket::IsOneSsrcStream(stream));
	}

	TEST(StreamParams, TestIsOneSsrcStream_SingleFlexfecAndRtxStream) {
	cricket::StreamParams stream;
	stream.add_ssrc(13);
	EXPECT_TRUE(stream.AddFecFrSsrc(13, 14));
	EXPECT_TRUE(stream.AddFidSsrc(13, 15));
	EXPECT_TRUE(cricket::IsOneSsrcStream(stream));
	}

	TEST(StreamParams, TestIsOneSsrcStream_SimulcastStream) {
	EXPECT_FALSE(cricket::IsOneSsrcStream(
	cricket::CreateSimStreamParams("cname", MAKE_VECTOR(kSsrcs2))));
	EXPECT_FALSE(cricket::IsOneSsrcStream(
	cricket::CreateSimStreamParams("cname", MAKE_VECTOR(kSsrcs3))));
	}

	TEST(StreamParams, TestIsOneSsrcStream_SimRtxStream) {
	cricket::StreamParams stream =
	cricket::CreateSimWithRtxStreamParams("cname",
	MAKE_VECTOR(kSsrcs3),
	MAKE_VECTOR(kRtxSsrcs3));
	EXPECT_FALSE(cricket::IsOneSsrcStream(stream));
	}

	TEST(StreamParams, TestIsSimulcastStream_LegacyStream) {
	EXPECT_FALSE(
	cricket::IsSimulcastStream(cricket::StreamParams::CreateLegacy(13)));
	}

	TEST(StreamParams, TestIsSimulcastStream_SingleRtxStream) {
	cricket::StreamParams stream;
	stream.add_ssrc(13);
	EXPECT_TRUE(stream.AddFidSsrc(13, 14));
	EXPECT_FALSE(cricket::IsSimulcastStream(stream));
	}

	TEST(StreamParams, TestIsSimulcastStream_SimulcastStream) {
	EXPECT_TRUE(cricket::IsSimulcastStream(
	cricket::CreateSimStreamParams("cname", MAKE_VECTOR(kSsrcs2))));
	EXPECT_TRUE(cricket::IsSimulcastStream(
	cricket::CreateSimStreamParams("cname", MAKE_VECTOR(kSsrcs3))));
	}

	TEST(StreamParams, TestIsSimulcastStream_SimRtxStream) {
	cricket::StreamParams stream =
	cricket::CreateSimWithRtxStreamParams("cname",
	MAKE_VECTOR(kSsrcs3),
	MAKE_VECTOR(kRtxSsrcs3));
	EXPECT_TRUE(cricket::IsSimulcastStream(stream));
	}

	TEST(StreamParams, TestIsSimulcastStream_InvalidStreams) {
	// stream1 has extra non-sim, non-fid ssrc.
	cricket::StreamParams stream1 =
	cricket::CreateSimWithRtxStreamParams("cname",
	MAKE_VECTOR(kSsrcs3),
	MAKE_VECTOR(kRtxSsrcs3));
	stream1.add_ssrc(25);
	EXPECT_FALSE(cricket::IsSimulcastStream(stream1));

	// stream2 has invalid fid-group (no primary).
	cricket::StreamParams stream2;
	stream2.add_ssrc(13);
	EXPECT_TRUE(stream2.AddFidSsrc(13, 14));
	std::remove(stream2.ssrcs.begin(), stream2.ssrcs.end(), 13u);
	EXPECT_FALSE(cricket::IsSimulcastStream(stream2));

	// stream3 has two SIM groups.
	cricket::StreamParams stream3 =
	cricket::CreateSimStreamParams("cname", MAKE_VECTOR(kSsrcs2));
	std::vector<uint32_t> sim_ssrcs = MAKE_VECTOR(kRtxSsrcs3);
	cricket::SsrcGroup sg(cricket::kSimSsrcGroupSemantics, sim_ssrcs);
	for (size_t i = 0; i < sim_ssrcs.size(); i++) {
	stream3.add_ssrc(sim_ssrcs[i]);
	}
	stream3.ssrc_groups.push_back(sg);
	EXPECT_FALSE(cricket::IsSimulcastStream(stream3));
	}