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      1 /*
      2  * libjingle
      3  * Copyright 2004 Google Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are met:
      7  *
      8  *  1. Redistributions of source code must retain the above copyright notice,
      9  *     this list of conditions and the following disclaimer.
     10  *  2. Redistributions in binary form must reproduce the above copyright notice,
     11  *     this list of conditions and the following disclaimer in the documentation
     12  *     and/or other materials provided with the distribution.
     13  *  3. The name of the author may not be used to endorse or promote products
     14  *     derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #include "talk/session/media/mediamessages.h"
     29 
     30 #include <string>
     31 #include <vector>
     32 
     33 #include "talk/base/gunit.h"
     34 #include "talk/base/scoped_ptr.h"
     35 #include "talk/p2p/base/constants.h"
     36 #include "talk/session/media/mediasessionclient.h"
     37 #include "talk/xmllite/xmlelement.h"
     38 
     39 // Unit tests for mediamessages.cc.
     40 
     41 namespace cricket {
     42 
     43 namespace {
     44 
     45 static const char kViewVideoNoneXml[] =
     46     "<view xmlns='google:jingle'"
     47     "  name='video1'"
     48     "  type='none'"
     49     "/>";
     50 
     51 class MediaMessagesTest : public testing::Test {
     52  public:
     53   // CreateMediaSessionDescription uses a static variable cricket::NS_JINGLE_RTP
     54   // defined in another file and cannot be used to initialize another static
     55   // variable (http://www.parashift.com/c++-faq-lite/ctors.html#faq-10.14)
     56   MediaMessagesTest()
     57       : remote_description_(CreateMediaSessionDescription("audio1", "video1")) {
     58   }
     59 
     60  protected:
     61   static std::string ViewVideoStaticVgaXml(const std::string& ssrc) {
     62       return "<view xmlns='google:jingle'"
     63              "  name='video1'"
     64              "  type='static'"
     65              "  ssrc='" + ssrc + "'"
     66              ">"
     67              "<params"
     68              "    width='640'"
     69              "    height='480'"
     70              "    framerate='30'"
     71              "    preference='0'"
     72              "  />"
     73              "</view>";
     74   }
     75 
     76   static cricket::StreamParams CreateStream(const std::string& nick,
     77                                             const std::string& name,
     78                                             uint32 ssrc1,
     79                                             uint32 ssrc2,
     80                                             const std::string& semantics,
     81                                             const std::string& type,
     82                                             const std::string& display) {
     83     StreamParams stream;
     84     stream.groupid = nick;
     85     stream.id = name;
     86     stream.ssrcs.push_back(ssrc1);
     87     stream.ssrcs.push_back(ssrc2);
     88     stream.ssrc_groups.push_back(
     89         cricket::SsrcGroup(semantics, stream.ssrcs));
     90     stream.type = type;
     91     stream.display = display;
     92     return stream;
     93   }
     94 
     95   static std::string StreamsXml(const std::string& stream1,
     96                                 const std::string& stream2) {
     97     return "<streams xmlns='google:jingle'>"
     98            + stream1
     99            + stream2 +
    100            "</streams>";
    101   }
    102 
    103 
    104   static std::string StreamXml(const std::string& nick,
    105                                const std::string& name,
    106                                const std::string& ssrc1,
    107                                const std::string& ssrc2,
    108                                const std::string& semantics,
    109                                const std::string& type,
    110                                const std::string& display) {
    111     return "<stream"
    112            " nick='" + nick + "'"
    113            " name='" + name + "'"
    114            " type='" + type + "'"
    115            " display='" + display + "'"
    116            ">"
    117            "<ssrc>" + ssrc1 + "</ssrc>"
    118            "<ssrc>" + ssrc2 + "</ssrc>"
    119            "<ssrc-group"
    120            "  semantics='" + semantics + "'"
    121            ">"
    122            "<ssrc>" + ssrc1 + "</ssrc>"
    123            "<ssrc>" + ssrc2 + "</ssrc>"
    124            "</ssrc-group>"
    125            "</stream>";
    126   }
    127 
    128   static std::string HeaderExtensionsXml(const std::string& hdrext1,
    129                                          const std::string& hdrext2) {
    130     return "<rtp:description xmlns:rtp=\"urn:xmpp:jingle:apps:rtp:1\">"
    131            + hdrext1
    132            + hdrext2 +
    133            "</rtp:description>";
    134   }
    135 
    136   static std::string HeaderExtensionXml(const std::string& uri,
    137                                         const std::string& id) {
    138     return "<rtp:rtp-hdrext"
    139            " uri='" + uri + "'"
    140            " id='" + id + "'"
    141            "/>";
    142   }
    143 
    144   static cricket::SessionDescription* CreateMediaSessionDescription(
    145       const std::string& audio_content_name,
    146       const std::string& video_content_name) {
    147     cricket::SessionDescription* desc = new cricket::SessionDescription();
    148     desc->AddContent(audio_content_name, cricket::NS_JINGLE_RTP,
    149                      new cricket::AudioContentDescription());
    150     desc->AddContent(video_content_name, cricket::NS_JINGLE_RTP,
    151                      new cricket::VideoContentDescription());
    152     return desc;
    153   }
    154 
    155   size_t ClearXmlElements(cricket::XmlElements* elements) {
    156     size_t size = elements->size();
    157     for (size_t i = 0; i < size; i++) {
    158       delete elements->at(i);
    159     }
    160     elements->clear();
    161     return size;
    162   }
    163 
    164   talk_base::scoped_ptr<cricket::SessionDescription> remote_description_;
    165 };
    166 
    167 }  // anonymous namespace
    168 
    169 // Test serializing/deserializing an empty <view> message.
    170 TEST_F(MediaMessagesTest, ViewNoneToFromXml) {
    171   buzz::XmlElement* expected_view_elem =
    172       buzz::XmlElement::ForStr(kViewVideoNoneXml);
    173   talk_base::scoped_ptr<buzz::XmlElement> action_elem(
    174       new buzz::XmlElement(QN_JINGLE));
    175 
    176   EXPECT_FALSE(cricket::IsJingleViewRequest(action_elem.get()));
    177   action_elem->AddElement(expected_view_elem);
    178   EXPECT_TRUE(cricket::IsJingleViewRequest(action_elem.get()));
    179 
    180   cricket::ViewRequest view_request;
    181   cricket::XmlElements actual_view_elems;
    182   cricket::WriteError error;
    183 
    184   ASSERT_TRUE(cricket::WriteJingleViewRequest(
    185       "video1", view_request, &actual_view_elems, &error));
    186 
    187   ASSERT_EQ(1U, actual_view_elems.size());
    188   EXPECT_EQ(expected_view_elem->Str(), actual_view_elems[0]->Str());
    189   ClearXmlElements(&actual_view_elems);
    190 
    191   cricket::ParseError parse_error;
    192   EXPECT_TRUE(cricket::IsJingleViewRequest(action_elem.get()));
    193   ASSERT_TRUE(cricket::ParseJingleViewRequest(
    194       action_elem.get(), &view_request, &parse_error));
    195   EXPECT_EQ(0U, view_request.static_video_views.size());
    196 }
    197 
    198 // Test serializing/deserializing an a simple vga <view> message.
    199 TEST_F(MediaMessagesTest, ViewVgaToFromXml) {
    200   talk_base::scoped_ptr<buzz::XmlElement> action_elem(
    201       new buzz::XmlElement(QN_JINGLE));
    202   buzz::XmlElement* expected_view_elem1 =
    203       buzz::XmlElement::ForStr(ViewVideoStaticVgaXml("1234"));
    204   buzz::XmlElement* expected_view_elem2 =
    205       buzz::XmlElement::ForStr(ViewVideoStaticVgaXml("2468"));
    206   action_elem->AddElement(expected_view_elem1);
    207   action_elem->AddElement(expected_view_elem2);
    208 
    209   cricket::ViewRequest view_request;
    210   cricket::XmlElements actual_view_elems;
    211   cricket::WriteError error;
    212 
    213   view_request.static_video_views.push_back(cricket::StaticVideoView(
    214       cricket::StreamSelector(1234), 640, 480, 30));
    215   view_request.static_video_views.push_back(cricket::StaticVideoView(
    216       cricket::StreamSelector(2468), 640, 480, 30));
    217 
    218   ASSERT_TRUE(cricket::WriteJingleViewRequest(
    219       "video1", view_request, &actual_view_elems, &error));
    220 
    221   ASSERT_EQ(2U, actual_view_elems.size());
    222   EXPECT_EQ(expected_view_elem1->Str(), actual_view_elems[0]->Str());
    223   EXPECT_EQ(expected_view_elem2->Str(), actual_view_elems[1]->Str());
    224   ClearXmlElements(&actual_view_elems);
    225 
    226   view_request.static_video_views.clear();
    227   cricket::ParseError parse_error;
    228   EXPECT_TRUE(cricket::IsJingleViewRequest(action_elem.get()));
    229   ASSERT_TRUE(cricket::ParseJingleViewRequest(
    230       action_elem.get(), &view_request, &parse_error));
    231   EXPECT_EQ(2U, view_request.static_video_views.size());
    232   EXPECT_EQ(1234U, view_request.static_video_views[0].selector.ssrc);
    233   EXPECT_EQ(640, view_request.static_video_views[0].width);
    234   EXPECT_EQ(480, view_request.static_video_views[0].height);
    235   EXPECT_EQ(30, view_request.static_video_views[0].framerate);
    236   EXPECT_EQ(2468U, view_request.static_video_views[1].selector.ssrc);
    237 }
    238 
    239 // Test deserializing bad view XML.
    240 TEST_F(MediaMessagesTest, ParseBadViewXml) {
    241   talk_base::scoped_ptr<buzz::XmlElement> action_elem(
    242       new buzz::XmlElement(QN_JINGLE));
    243   buzz::XmlElement* view_elem =
    244       buzz::XmlElement::ForStr(ViewVideoStaticVgaXml("not-an-ssrc"));
    245   action_elem->AddElement(view_elem);
    246 
    247   cricket::ViewRequest view_request;
    248   cricket::ParseError parse_error;
    249   ASSERT_FALSE(cricket::ParseJingleViewRequest(
    250       action_elem.get(), &view_request, &parse_error));
    251 }
    252 
    253 
    254 // Test serializing/deserializing typical streams xml.
    255 TEST_F(MediaMessagesTest, StreamsToFromXml) {
    256   talk_base::scoped_ptr<buzz::XmlElement> expected_streams_elem(
    257       buzz::XmlElement::ForStr(
    258           StreamsXml(
    259               StreamXml("nick1", "stream1", "101", "102",
    260                         "semantics1", "type1", "display1"),
    261               StreamXml("nick2", "stream2", "201", "202",
    262                         "semantics2", "type2", "display2"))));
    263 
    264   std::vector<cricket::StreamParams> expected_streams;
    265   expected_streams.push_back(CreateStream("nick1", "stream1", 101U, 102U,
    266                                           "semantics1", "type1", "display1"));
    267   expected_streams.push_back(CreateStream("nick2", "stream2", 201U, 202U,
    268                                           "semantics2", "type2", "display2"));
    269 
    270   talk_base::scoped_ptr<buzz::XmlElement> actual_desc_elem(
    271       new buzz::XmlElement(QN_JINGLE_RTP_CONTENT));
    272   cricket::WriteJingleStreams(expected_streams, actual_desc_elem.get());
    273 
    274   const buzz::XmlElement* actual_streams_elem =
    275       actual_desc_elem->FirstNamed(QN_JINGLE_DRAFT_STREAMS);
    276   ASSERT_TRUE(actual_streams_elem != NULL);
    277   EXPECT_EQ(expected_streams_elem->Str(), actual_streams_elem->Str());
    278 
    279   talk_base::scoped_ptr<buzz::XmlElement> expected_desc_elem(
    280       new buzz::XmlElement(QN_JINGLE_RTP_CONTENT));
    281   expected_desc_elem->AddElement(new buzz::XmlElement(
    282       *expected_streams_elem));
    283   std::vector<cricket::StreamParams> actual_streams;
    284   cricket::ParseError parse_error;
    285 
    286   EXPECT_TRUE(cricket::HasJingleStreams(expected_desc_elem.get()));
    287   ASSERT_TRUE(cricket::ParseJingleStreams(
    288       expected_desc_elem.get(), &actual_streams, &parse_error));
    289   EXPECT_EQ(2U, actual_streams.size());
    290   EXPECT_EQ(expected_streams[0], actual_streams[0]);
    291   EXPECT_EQ(expected_streams[1], actual_streams[1]);
    292 }
    293 
    294 // Test deserializing bad streams xml.
    295 TEST_F(MediaMessagesTest, StreamsFromBadXml) {
    296   talk_base::scoped_ptr<buzz::XmlElement> streams_elem(
    297       buzz::XmlElement::ForStr(
    298           StreamsXml(
    299               StreamXml("nick1", "name1", "101", "not-an-ssrc",
    300                         "semantics1", "type1", "display1"),
    301               StreamXml("nick2", "name2", "202", "not-an-ssrc",
    302                         "semantics2", "type2", "display2"))));
    303   talk_base::scoped_ptr<buzz::XmlElement> desc_elem(
    304       new buzz::XmlElement(QN_JINGLE_RTP_CONTENT));
    305   desc_elem->AddElement(new buzz::XmlElement(*streams_elem));
    306 
    307   std::vector<cricket::StreamParams> actual_streams;
    308   cricket::ParseError parse_error;
    309   ASSERT_FALSE(cricket::ParseJingleStreams(
    310       desc_elem.get(), &actual_streams, &parse_error));
    311 }
    312 
    313 // Test serializing/deserializing typical RTP Header Extension xml.
    314 TEST_F(MediaMessagesTest, HeaderExtensionsToFromXml) {
    315   talk_base::scoped_ptr<buzz::XmlElement> expected_desc_elem(
    316       buzz::XmlElement::ForStr(
    317           HeaderExtensionsXml(
    318               HeaderExtensionXml("abc", "123"),
    319               HeaderExtensionXml("def", "456"))));
    320 
    321   std::vector<cricket::RtpHeaderExtension> expected_hdrexts;
    322   expected_hdrexts.push_back(RtpHeaderExtension("abc", 123));
    323   expected_hdrexts.push_back(RtpHeaderExtension("def", 456));
    324 
    325   talk_base::scoped_ptr<buzz::XmlElement> actual_desc_elem(
    326       new buzz::XmlElement(QN_JINGLE_RTP_CONTENT));
    327   cricket::WriteJingleRtpHeaderExtensions(expected_hdrexts, actual_desc_elem.get());
    328 
    329   ASSERT_TRUE(actual_desc_elem != NULL);
    330   EXPECT_EQ(expected_desc_elem->Str(), actual_desc_elem->Str());
    331 
    332   std::vector<cricket::RtpHeaderExtension> actual_hdrexts;
    333   cricket::ParseError parse_error;
    334   ASSERT_TRUE(cricket::ParseJingleRtpHeaderExtensions(
    335       expected_desc_elem.get(), &actual_hdrexts, &parse_error));
    336   EXPECT_EQ(2U, actual_hdrexts.size());
    337   EXPECT_EQ(expected_hdrexts[0], actual_hdrexts[0]);
    338   EXPECT_EQ(expected_hdrexts[1], actual_hdrexts[1]);
    339 }
    340 
    341 // Test deserializing bad RTP header extension xml.
    342 TEST_F(MediaMessagesTest, HeaderExtensionsFromBadXml) {
    343   std::vector<cricket::RtpHeaderExtension> actual_hdrexts;
    344   cricket::ParseError parse_error;
    345 
    346   talk_base::scoped_ptr<buzz::XmlElement> desc_elem(
    347       buzz::XmlElement::ForStr(
    348           HeaderExtensionsXml(
    349               HeaderExtensionXml("abc", "123"),
    350               HeaderExtensionXml("def", "not-an-id"))));
    351   ASSERT_FALSE(cricket::ParseJingleRtpHeaderExtensions(
    352       desc_elem.get(), &actual_hdrexts, &parse_error));
    353 
    354   desc_elem.reset(
    355       buzz::XmlElement::ForStr(
    356           HeaderExtensionsXml(
    357               HeaderExtensionXml("abc", "123"),
    358               HeaderExtensionXml("def", "-1"))));
    359   ASSERT_FALSE(cricket::ParseJingleRtpHeaderExtensions(
    360       desc_elem.get(), &actual_hdrexts, &parse_error));
    361 }
    362 
    363 }  // namespace cricket
    364