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/p2p/base/constants.h"
34#include "talk/session/media/mediasessionclient.h"
35#include "webrtc/libjingle/xmllite/xmlelement.h"
36#include "webrtc/base/gunit.h"
37#include "webrtc/base/scoped_ptr.h"
38
39// Unit tests for mediamessages.cc.
40
41namespace cricket {
42
43namespace {
44
45static const char kViewVideoNoneXml[] =
46    "<view xmlns='google:jingle'"
47    "  name='video1'"
48    "  type='none'"
49    "/>";
50
51class 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  rtc::scoped_ptr<cricket::SessionDescription> remote_description_;
165};
166
167}  // anonymous namespace
168
169// Test serializing/deserializing an empty <view> message.
170TEST_F(MediaMessagesTest, ViewNoneToFromXml) {
171  buzz::XmlElement* expected_view_elem =
172      buzz::XmlElement::ForStr(kViewVideoNoneXml);
173  rtc::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.
199TEST_F(MediaMessagesTest, ViewVgaToFromXml) {
200  rtc::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.
240TEST_F(MediaMessagesTest, ParseBadViewXml) {
241  rtc::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.
255TEST_F(MediaMessagesTest, StreamsToFromXml) {
256  rtc::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  rtc::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  rtc::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.
295TEST_F(MediaMessagesTest, StreamsFromBadXml) {
296  rtc::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  rtc::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.
314TEST_F(MediaMessagesTest, HeaderExtensionsToFromXml) {
315  rtc::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  rtc::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.
342TEST_F(MediaMessagesTest, HeaderExtensionsFromBadXml) {
343  std::vector<cricket::RtpHeaderExtension> actual_hdrexts;
344  cricket::ParseError parse_error;
345
346  rtc::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