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/media/base/testutils.h"
29
30 #include <math.h>
31 #include <algorithm>
32
33 #include "talk/media/base/executablehelpers.h"
34 #include "talk/media/base/rtpdump.h"
35 #include "talk/media/base/videocapturer.h"
36 #include "talk/media/base/videoframe.h"
37 #include "webrtc/base/bytebuffer.h"
38 #include "webrtc/base/fileutils.h"
39 #include "webrtc/base/gunit.h"
40 #include "webrtc/base/pathutils.h"
41 #include "webrtc/base/stream.h"
42 #include "webrtc/base/stringutils.h"
43 #include "webrtc/base/testutils.h"
44
45 namespace cricket {
46
47 /////////////////////////////////////////////////////////////////////////
48 // Implementation of RawRtpPacket
49 /////////////////////////////////////////////////////////////////////////
WriteToByteBuffer(uint32_t in_ssrc,rtc::ByteBuffer * buf) const50 void RawRtpPacket::WriteToByteBuffer(uint32_t in_ssrc,
51 rtc::ByteBuffer* buf) const {
52 if (!buf) return;
53
54 buf->WriteUInt8(ver_to_cc);
55 buf->WriteUInt8(m_to_pt);
56 buf->WriteUInt16(sequence_number);
57 buf->WriteUInt32(timestamp);
58 buf->WriteUInt32(in_ssrc);
59 buf->WriteBytes(payload, sizeof(payload));
60 }
61
ReadFromByteBuffer(rtc::ByteBuffer * buf)62 bool RawRtpPacket::ReadFromByteBuffer(rtc::ByteBuffer* buf) {
63 if (!buf) return false;
64
65 bool ret = true;
66 ret &= buf->ReadUInt8(&ver_to_cc);
67 ret &= buf->ReadUInt8(&m_to_pt);
68 ret &= buf->ReadUInt16(&sequence_number);
69 ret &= buf->ReadUInt32(×tamp);
70 ret &= buf->ReadUInt32(&ssrc);
71 ret &= buf->ReadBytes(payload, sizeof(payload));
72 return ret;
73 }
74
SameExceptSeqNumTimestampSsrc(const RawRtpPacket & packet,uint16_t seq,uint32_t ts,uint32_t ssc) const75 bool RawRtpPacket::SameExceptSeqNumTimestampSsrc(const RawRtpPacket& packet,
76 uint16_t seq,
77 uint32_t ts,
78 uint32_t ssc) const {
79 return sequence_number == seq &&
80 timestamp == ts &&
81 ver_to_cc == packet.ver_to_cc &&
82 m_to_pt == packet.m_to_pt &&
83 ssrc == ssc &&
84 0 == memcmp(payload, packet.payload, sizeof(payload));
85 }
86
87 /////////////////////////////////////////////////////////////////////////
88 // Implementation of RawRtcpPacket
89 /////////////////////////////////////////////////////////////////////////
WriteToByteBuffer(rtc::ByteBuffer * buf) const90 void RawRtcpPacket::WriteToByteBuffer(rtc::ByteBuffer *buf) const {
91 if (!buf) return;
92
93 buf->WriteUInt8(ver_to_count);
94 buf->WriteUInt8(type);
95 buf->WriteUInt16(length);
96 buf->WriteBytes(payload, sizeof(payload));
97 }
98
ReadFromByteBuffer(rtc::ByteBuffer * buf)99 bool RawRtcpPacket::ReadFromByteBuffer(rtc::ByteBuffer* buf) {
100 if (!buf) return false;
101
102 bool ret = true;
103 ret &= buf->ReadUInt8(&ver_to_count);
104 ret &= buf->ReadUInt8(&type);
105 ret &= buf->ReadUInt16(&length);
106 ret &= buf->ReadBytes(payload, sizeof(payload));
107 return ret;
108 }
109
EqualsTo(const RawRtcpPacket & packet) const110 bool RawRtcpPacket::EqualsTo(const RawRtcpPacket& packet) const {
111 return ver_to_count == packet.ver_to_count &&
112 type == packet.type &&
113 length == packet.length &&
114 0 == memcmp(payload, packet.payload, sizeof(payload));
115 }
116
117 /////////////////////////////////////////////////////////////////////////
118 // Implementation of class RtpTestUtility
119 /////////////////////////////////////////////////////////////////////////
120 const RawRtpPacket RtpTestUtility::kTestRawRtpPackets[] = {
121 {0x80, 0, 0, 0, RtpTestUtility::kDefaultSsrc, "RTP frame 0"},
122 {0x80, 0, 1, 30, RtpTestUtility::kDefaultSsrc, "RTP frame 1"},
123 {0x80, 0, 2, 30, RtpTestUtility::kDefaultSsrc, "RTP frame 1"},
124 {0x80, 0, 3, 60, RtpTestUtility::kDefaultSsrc, "RTP frame 2"}
125 };
126 const RawRtcpPacket RtpTestUtility::kTestRawRtcpPackets[] = {
127 // The Version is 2, the Length is 2, and the payload has 8 bytes.
128 {0x80, 0, 2, "RTCP0000"},
129 {0x80, 0, 2, "RTCP0001"},
130 {0x80, 0, 2, "RTCP0002"},
131 {0x80, 0, 2, "RTCP0003"},
132 };
133
GetTestPacketCount()134 size_t RtpTestUtility::GetTestPacketCount() {
135 return std::min(arraysize(kTestRawRtpPackets),
136 arraysize(kTestRawRtcpPackets));
137 }
138
WriteTestPackets(size_t count,bool rtcp,uint32_t rtp_ssrc,RtpDumpWriter * writer)139 bool RtpTestUtility::WriteTestPackets(size_t count,
140 bool rtcp,
141 uint32_t rtp_ssrc,
142 RtpDumpWriter* writer) {
143 if (!writer || count > GetTestPacketCount()) return false;
144
145 bool result = true;
146 uint32_t elapsed_time_ms = 0;
147 for (size_t i = 0; i < count && result; ++i) {
148 rtc::ByteBuffer buf;
149 if (rtcp) {
150 kTestRawRtcpPackets[i].WriteToByteBuffer(&buf);
151 } else {
152 kTestRawRtpPackets[i].WriteToByteBuffer(rtp_ssrc, &buf);
153 }
154
155 RtpDumpPacket dump_packet(buf.Data(), buf.Length(), elapsed_time_ms, rtcp);
156 elapsed_time_ms += kElapsedTimeInterval;
157 result &= (rtc::SR_SUCCESS == writer->WritePacket(dump_packet));
158 }
159 return result;
160 }
161
VerifyTestPacketsFromStream(size_t count,rtc::StreamInterface * stream,uint32_t ssrc)162 bool RtpTestUtility::VerifyTestPacketsFromStream(size_t count,
163 rtc::StreamInterface* stream,
164 uint32_t ssrc) {
165 if (!stream) return false;
166
167 uint32_t prev_elapsed_time = 0;
168 bool result = true;
169 stream->Rewind();
170 RtpDumpLoopReader reader(stream);
171 for (size_t i = 0; i < count && result; ++i) {
172 // Which loop and which index in the loop are we reading now.
173 size_t loop = i / GetTestPacketCount();
174 size_t index = i % GetTestPacketCount();
175
176 RtpDumpPacket packet;
177 result &= (rtc::SR_SUCCESS == reader.ReadPacket(&packet));
178 // Check the elapsed time of the dump packet.
179 result &= (packet.elapsed_time >= prev_elapsed_time);
180 prev_elapsed_time = packet.elapsed_time;
181
182 // Check the RTP or RTCP packet.
183 rtc::ByteBuffer buf(reinterpret_cast<const char*>(&packet.data[0]),
184 packet.data.size());
185 if (packet.is_rtcp()) {
186 // RTCP packet.
187 RawRtcpPacket rtcp_packet;
188 result &= rtcp_packet.ReadFromByteBuffer(&buf);
189 result &= rtcp_packet.EqualsTo(kTestRawRtcpPackets[index]);
190 } else {
191 // RTP packet.
192 RawRtpPacket rtp_packet;
193 result &= rtp_packet.ReadFromByteBuffer(&buf);
194 result &= rtp_packet.SameExceptSeqNumTimestampSsrc(
195 kTestRawRtpPackets[index],
196 static_cast<uint16_t>(kTestRawRtpPackets[index].sequence_number +
197 loop * GetTestPacketCount()),
198 static_cast<uint32_t>(kTestRawRtpPackets[index].timestamp +
199 loop * kRtpTimestampIncrease),
200 ssrc);
201 }
202 }
203
204 stream->Rewind();
205 return result;
206 }
207
VerifyPacket(const RtpDumpPacket * dump,const RawRtpPacket * raw,bool header_only)208 bool RtpTestUtility::VerifyPacket(const RtpDumpPacket* dump,
209 const RawRtpPacket* raw,
210 bool header_only) {
211 if (!dump || !raw) return false;
212
213 rtc::ByteBuffer buf;
214 raw->WriteToByteBuffer(RtpTestUtility::kDefaultSsrc, &buf);
215
216 if (header_only) {
217 size_t header_len = 0;
218 dump->GetRtpHeaderLen(&header_len);
219 return header_len == dump->data.size() &&
220 buf.Length() > dump->data.size() &&
221 0 == memcmp(buf.Data(), &dump->data[0], dump->data.size());
222 } else {
223 return buf.Length() == dump->data.size() &&
224 0 == memcmp(buf.Data(), &dump->data[0], dump->data.size());
225 }
226 }
227
228 // Implementation of VideoCaptureListener.
VideoCapturerListener(VideoCapturer * capturer)229 VideoCapturerListener::VideoCapturerListener(VideoCapturer* capturer)
230 : last_capture_state_(CS_STARTING),
231 frame_count_(0),
232 frame_fourcc_(0),
233 frame_width_(0),
234 frame_height_(0),
235 frame_size_(0),
236 resolution_changed_(false) {
237 capturer->SignalStateChange.connect(this,
238 &VideoCapturerListener::OnStateChange);
239 capturer->SignalFrameCaptured.connect(this,
240 &VideoCapturerListener::OnFrameCaptured);
241 }
242
OnStateChange(VideoCapturer * capturer,CaptureState result)243 void VideoCapturerListener::OnStateChange(VideoCapturer* capturer,
244 CaptureState result) {
245 last_capture_state_ = result;
246 }
247
OnFrameCaptured(VideoCapturer * capturer,const CapturedFrame * frame)248 void VideoCapturerListener::OnFrameCaptured(VideoCapturer* capturer,
249 const CapturedFrame* frame) {
250 ++frame_count_;
251 if (1 == frame_count_) {
252 frame_fourcc_ = frame->fourcc;
253 frame_width_ = frame->width;
254 frame_height_ = frame->height;
255 frame_size_ = frame->data_size;
256 } else if (frame_width_ != frame->width || frame_height_ != frame->height) {
257 resolution_changed_ = true;
258 }
259 }
260
261 // Returns the absolute path to a file in the testdata/ directory.
GetTestFilePath(const std::string & filename)262 std::string GetTestFilePath(const std::string& filename) {
263 // Locate test data directory.
264 #ifdef ENABLE_WEBRTC
265 rtc::Pathname path = rtc::GetExecutablePath();
266 EXPECT_FALSE(path.empty());
267 path.AppendPathname("../../talk/");
268 #else
269 rtc::Pathname path = testing::GetTalkDirectory();
270 EXPECT_FALSE(path.empty()); // must be run from inside "talk"
271 #endif
272 path.AppendFolder("media/testdata/");
273 path.SetFilename(filename);
274 return path.pathname();
275 }
276
277 // Loads the image with the specified prefix and size into |out|.
LoadPlanarYuvTestImage(const std::string & prefix,int width,int height,uint8_t * out)278 bool LoadPlanarYuvTestImage(const std::string& prefix,
279 int width,
280 int height,
281 uint8_t* out) {
282 std::stringstream ss;
283 ss << prefix << "." << width << "x" << height << "_P420.yuv";
284
285 rtc::scoped_ptr<rtc::FileStream> stream(
286 rtc::Filesystem::OpenFile(rtc::Pathname(
287 GetTestFilePath(ss.str())), "rb"));
288 if (!stream) {
289 return false;
290 }
291
292 rtc::StreamResult res =
293 stream->ReadAll(out, I420_SIZE(width, height), NULL, NULL);
294 return (res == rtc::SR_SUCCESS);
295 }
296
297 // Dumps the YUV image out to a file, for visual inspection.
298 // PYUV tool can be used to view dump files.
DumpPlanarYuvTestImage(const std::string & prefix,const uint8_t * img,int w,int h)299 void DumpPlanarYuvTestImage(const std::string& prefix,
300 const uint8_t* img,
301 int w,
302 int h) {
303 rtc::FileStream fs;
304 char filename[256];
305 rtc::sprintfn(filename, sizeof(filename), "%s.%dx%d_P420.yuv",
306 prefix.c_str(), w, h);
307 fs.Open(filename, "wb", NULL);
308 fs.Write(img, I420_SIZE(w, h), NULL, NULL);
309 }
310
311 // Dumps the ARGB image out to a file, for visual inspection.
312 // ffplay tool can be used to view dump files.
DumpPlanarArgbTestImage(const std::string & prefix,const uint8_t * img,int w,int h)313 void DumpPlanarArgbTestImage(const std::string& prefix,
314 const uint8_t* img,
315 int w,
316 int h) {
317 rtc::FileStream fs;
318 char filename[256];
319 rtc::sprintfn(filename, sizeof(filename), "%s.%dx%d_ARGB.raw",
320 prefix.c_str(), w, h);
321 fs.Open(filename, "wb", NULL);
322 fs.Write(img, ARGB_SIZE(w, h), NULL, NULL);
323 }
324
VideoFrameEqual(const VideoFrame * frame0,const VideoFrame * frame1)325 bool VideoFrameEqual(const VideoFrame* frame0, const VideoFrame* frame1) {
326 const uint8_t* y0 = frame0->GetYPlane();
327 const uint8_t* u0 = frame0->GetUPlane();
328 const uint8_t* v0 = frame0->GetVPlane();
329 const uint8_t* y1 = frame1->GetYPlane();
330 const uint8_t* u1 = frame1->GetUPlane();
331 const uint8_t* v1 = frame1->GetVPlane();
332
333 for (size_t i = 0; i < frame0->GetHeight(); ++i) {
334 if (0 != memcmp(y0, y1, frame0->GetWidth())) {
335 return false;
336 }
337 y0 += frame0->GetYPitch();
338 y1 += frame1->GetYPitch();
339 }
340
341 for (size_t i = 0; i < frame0->GetChromaHeight(); ++i) {
342 if (0 != memcmp(u0, u1, frame0->GetChromaWidth())) {
343 return false;
344 }
345 if (0 != memcmp(v0, v1, frame0->GetChromaWidth())) {
346 return false;
347 }
348 u0 += frame0->GetUPitch();
349 v0 += frame0->GetVPitch();
350 u1 += frame1->GetUPitch();
351 v1 += frame1->GetVPitch();
352 }
353
354 return true;
355 }
356
CreateSimStreamParams(const std::string & cname,const std::vector<uint32_t> & ssrcs)357 cricket::StreamParams CreateSimStreamParams(
358 const std::string& cname,
359 const std::vector<uint32_t>& ssrcs) {
360 cricket::StreamParams sp;
361 cricket::SsrcGroup sg(cricket::kSimSsrcGroupSemantics, ssrcs);
362 sp.ssrcs = ssrcs;
363 sp.ssrc_groups.push_back(sg);
364 sp.cname = cname;
365 return sp;
366 }
367
368 // There should be an rtx_ssrc per ssrc.
CreateSimWithRtxStreamParams(const std::string & cname,const std::vector<uint32_t> & ssrcs,const std::vector<uint32_t> & rtx_ssrcs)369 cricket::StreamParams CreateSimWithRtxStreamParams(
370 const std::string& cname,
371 const std::vector<uint32_t>& ssrcs,
372 const std::vector<uint32_t>& rtx_ssrcs) {
373 cricket::StreamParams sp = CreateSimStreamParams(cname, ssrcs);
374 for (size_t i = 0; i < ssrcs.size(); ++i) {
375 sp.ssrcs.push_back(rtx_ssrcs[i]);
376 std::vector<uint32_t> fid_ssrcs;
377 fid_ssrcs.push_back(ssrcs[i]);
378 fid_ssrcs.push_back(rtx_ssrcs[i]);
379 cricket::SsrcGroup fid_group(cricket::kFidSsrcGroupSemantics, fid_ssrcs);
380 sp.ssrc_groups.push_back(fid_group);
381 }
382 return sp;
383 }
384
385 } // namespace cricket
386