/*
 * libjingle
 * Copyright 2012 Google Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "talk/base/gunit.h"
#include "talk/media/base/streamparams.h"
#include "talk/media/base/testutils.h"

static const uint32 kSscrs1[] = {1};
static const uint32 kSscrs2[] = {1, 2};

static cricket::StreamParams CreateStreamParamsWithSsrcGroup(
    const std::string& semantics, const uint32 ssrcs_in[], size_t len) {
  cricket::StreamParams stream;
  std::vector<uint32> 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(kSscrs1)),
    cricket::SsrcGroup("ABC", MAKE_VECTOR(kSscrs2)),
    cricket::SsrcGroup("Abc", MAKE_VECTOR(kSscrs2)),
    cricket::SsrcGroup("abc", MAKE_VECTOR(kSscrs2)),
  };

  for (size_t i = 0; i < ARRAY_SIZE(ssrc_groups); ++i) {
    for (size_t j = 0; j < ARRAY_SIZE(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(kSscrs1));
  EXPECT_TRUE(sg1.has_semantics("ABC"));

  cricket::SsrcGroup sg2("Abc", MAKE_VECTOR(kSscrs1));
  EXPECT_FALSE(sg2.has_semantics("ABC"));

  cricket::SsrcGroup sg3("abc", MAKE_VECTOR(kSscrs1));
  EXPECT_FALSE(sg3.has_semantics("ABC"));
}

TEST(SsrcGroup, ToString) {
  cricket::SsrcGroup sg1("ABC", MAKE_VECTOR(kSscrs1));
  EXPECT_STREQ("{semantics:ABC;ssrcs:[1]}", sg1.ToString().c_str());
}

TEST(StreamParams, CreateLegacy) {
  const uint32 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", kSscrs2, ARRAY_SIZE(kSscrs2));
  EXPECT_EQ(2U, sp.ssrcs.size());
  EXPECT_EQ(kSscrs2[0], sp.first_ssrc());
  EXPECT_TRUE(sp.has_ssrcs());
  EXPECT_TRUE(sp.has_ssrc(kSscrs2[0]));
  EXPECT_TRUE(sp.has_ssrc(kSscrs2[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(kSscrs2[0], sp.ssrc_groups[0].ssrcs[0]);
  EXPECT_EQ(kSscrs2[1], sp.ssrc_groups[0].ssrcs[1]);
}

TEST(StreamParams, GetSsrcGroup) {
  cricket::StreamParams sp =
      CreateStreamParamsWithSsrcGroup("XYZ", kSscrs2, ARRAY_SIZE(kSscrs2));
  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", kSscrs1, ARRAY_SIZE(kSscrs1));
  cricket::StreamParams sg2 =
      CreateStreamParamsWithSsrcGroup("ABC", kSscrs2, ARRAY_SIZE(kSscrs2));
  cricket::StreamParams sg3 =
      CreateStreamParamsWithSsrcGroup("Abc", kSscrs2, ARRAY_SIZE(kSscrs2));
  cricket::StreamParams sg4 =
      CreateStreamParamsWithSsrcGroup("abc", kSscrs2, ARRAY_SIZE(kSscrs2));
  cricket::StreamParams sps[] = {l1, l2, sg1, sg2, sg3, sg4};

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

TEST(StreamParams, FidFunctions) {
  uint32 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);
  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> 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, ToString) {
  cricket::StreamParams sp =
      CreateStreamParamsWithSsrcGroup("XYZ", kSscrs2, ARRAY_SIZE(kSscrs2));
  EXPECT_STREQ("{ssrcs:[1,2];ssrc_groups:{semantics:XYZ;ssrcs:[1,2]};}",
               sp.ToString().c_str());
}