src/third_party/libjingle/source/talk/media/base/testutils.cc

   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
  32 #include "talk/media/base/rtpdump.h"
  33 #include "talk/media/base/videocapturer.h"
  34 #include "talk/media/base/videoframe.h"
  35 #include "webrtc/base/bytebuffer.h"
  36 #include "webrtc/base/fileutils.h"
  37 #include "webrtc/base/gunit.h"
  38 #include "webrtc/base/pathutils.h"
  39 #include "webrtc/base/stream.h"
  40 #include "webrtc/base/stringutils.h"
  41 #include "webrtc/base/testutils.h"
  42
  43 namespace cricket {
  44
  45 /////////////////////////////////////////////////////////////////////////
  46 // Implementation of RawRtpPacket
  47 /////////////////////////////////////////////////////////////////////////
  48 void RawRtpPacket::WriteToByteBuffer(
  49     uint32 in_ssrc, rtc::ByteBuffer *buf) const {
  50   if (!buf) return;
  51
  52   buf->WriteUInt8(ver_to_cc);
  53   buf->WriteUInt8(m_to_pt);
  54   buf->WriteUInt16(sequence_number);
  55   buf->WriteUInt32(timestamp);
  56   buf->WriteUInt32(in_ssrc);
  57   buf->WriteBytes(payload, sizeof(payload));
  58 }
  59
  60 bool RawRtpPacket::ReadFromByteBuffer(rtc::ByteBuffer* buf) {
  61   if (!buf) return false;
  62
  63   bool ret = true;
  64   ret &= buf->ReadUInt8(&ver_to_cc);
  65   ret &= buf->ReadUInt8(&m_to_pt);
  66   ret &= buf->ReadUInt16(&sequence_number);
  67   ret &= buf->ReadUInt32(&timestamp);
  68   ret &= buf->ReadUInt32(&ssrc);
  69   ret &= buf->ReadBytes(payload, sizeof(payload));
  70   return ret;
  71 }
  72
  73 bool RawRtpPacket::SameExceptSeqNumTimestampSsrc(
  74     const RawRtpPacket& packet, uint16 seq, uint32 ts, uint32 ssc) const {
  75   return sequence_number == seq &&
  76       timestamp == ts &&
  77       ver_to_cc == packet.ver_to_cc &&
  78       m_to_pt == packet.m_to_pt &&
  79       ssrc == ssc &&
  80       0 == memcmp(payload, packet.payload, sizeof(payload));
  81 }
  82
  83 /////////////////////////////////////////////////////////////////////////
  84 // Implementation of RawRtcpPacket
  85 /////////////////////////////////////////////////////////////////////////
  86 void RawRtcpPacket::WriteToByteBuffer(rtc::ByteBuffer *buf) const {
  87   if (!buf) return;
  88
  89   buf->WriteUInt8(ver_to_count);
  90   buf->WriteUInt8(type);
  91   buf->WriteUInt16(length);
  92   buf->WriteBytes(payload, sizeof(payload));
  93 }
  94
  95 bool RawRtcpPacket::ReadFromByteBuffer(rtc::ByteBuffer* buf) {
  96   if (!buf) return false;
  97
  98   bool ret = true;
  99   ret &= buf->ReadUInt8(&ver_to_count);
 100   ret &= buf->ReadUInt8(&type);
 101   ret &= buf->ReadUInt16(&length);
 102   ret &= buf->ReadBytes(payload, sizeof(payload));
 103   return ret;
 104 }
 105
 106 bool RawRtcpPacket::EqualsTo(const RawRtcpPacket& packet) const {
 107   return ver_to_count == packet.ver_to_count &&
 108       type == packet.type &&
 109       length == packet.length &&
 110       0 == memcmp(payload, packet.payload, sizeof(payload));
 111 }
 112
 113 /////////////////////////////////////////////////////////////////////////
 114 // Implementation of class RtpTestUtility
 115 /////////////////////////////////////////////////////////////////////////
 116 const RawRtpPacket RtpTestUtility::kTestRawRtpPackets[] = {
 117     {0x80, 0, 0, 0,  RtpTestUtility::kDefaultSsrc, "RTP frame 0"},
 118     {0x80, 0, 1, 30, RtpTestUtility::kDefaultSsrc, "RTP frame 1"},
 119     {0x80, 0, 2, 30, RtpTestUtility::kDefaultSsrc, "RTP frame 1"},
 120     {0x80, 0, 3, 60, RtpTestUtility::kDefaultSsrc, "RTP frame 2"}
 121 };
 122 const RawRtcpPacket RtpTestUtility::kTestRawRtcpPackets[] = {
 123     // The Version is 2, the Length is 2, and the payload has 8 bytes.
 124     {0x80, 0, 2, "RTCP0000"},
 125     {0x80, 0, 2, "RTCP0001"},
 126     {0x80, 0, 2, "RTCP0002"},
 127     {0x80, 0, 2, "RTCP0003"},
 128 };
 129
 130 size_t RtpTestUtility::GetTestPacketCount() {
 131   return rtc::_min(
 132       ARRAY_SIZE(kTestRawRtpPackets),
 133       ARRAY_SIZE(kTestRawRtcpPackets));
 134 }
 135
 136 bool RtpTestUtility::WriteTestPackets(
 137     size_t count, bool rtcp, uint32 rtp_ssrc, RtpDumpWriter* writer) {
 138   if (!writer || count > GetTestPacketCount()) return false;
 139
 140   bool result = true;
 141   uint32 elapsed_time_ms = 0;
 142   for (size_t i = 0; i < count && result; ++i) {
 143     rtc::ByteBuffer buf;
 144     if (rtcp) {
 145       kTestRawRtcpPackets[i].WriteToByteBuffer(&buf);
 146     } else {
 147       kTestRawRtpPackets[i].WriteToByteBuffer(rtp_ssrc, &buf);
 148     }
 149
 150     RtpDumpPacket dump_packet(buf.Data(), buf.Length(), elapsed_time_ms, rtcp);
 151     elapsed_time_ms += kElapsedTimeInterval;
 152     result &= (rtc::SR_SUCCESS == writer->WritePacket(dump_packet));
 153   }
 154   return result;
 155 }
 156
 157 bool RtpTestUtility::VerifyTestPacketsFromStream(
 158     size_t count, rtc::StreamInterface* stream, uint32 ssrc) {
 159   if (!stream) return false;
 160
 161   uint32 prev_elapsed_time = 0;
 162   bool result = true;
 163   stream->Rewind();
 164   RtpDumpLoopReader reader(stream);
 165   for (size_t i = 0; i < count && result; ++i) {
 166     // Which loop and which index in the loop are we reading now.
 167     size_t loop = i / GetTestPacketCount();
 168     size_t index = i % GetTestPacketCount();
 169
 170     RtpDumpPacket packet;
 171     result &= (rtc::SR_SUCCESS == reader.ReadPacket(&packet));
 172     // Check the elapsed time of the dump packet.
 173     result &= (packet.elapsed_time >= prev_elapsed_time);
 174     prev_elapsed_time = packet.elapsed_time;
 175
 176     // Check the RTP or RTCP packet.
 177     rtc::ByteBuffer buf(reinterpret_cast<const char*>(&packet.data[0]),
 178                               packet.data.size());
 179     if (packet.is_rtcp()) {
 180       // RTCP packet.
 181       RawRtcpPacket rtcp_packet;
 182       result &= rtcp_packet.ReadFromByteBuffer(&buf);
 183       result &= rtcp_packet.EqualsTo(kTestRawRtcpPackets[index]);
 184     } else {
 185       // RTP packet.
 186       RawRtpPacket rtp_packet;
 187       result &= rtp_packet.ReadFromByteBuffer(&buf);
 188       result &= rtp_packet.SameExceptSeqNumTimestampSsrc(
 189           kTestRawRtpPackets[index],
 190           static_cast<uint16>(kTestRawRtpPackets[index].sequence_number +
 191                               loop * GetTestPacketCount()),
 192           static_cast<uint32>(kTestRawRtpPackets[index].timestamp +
 193                               loop * kRtpTimestampIncrease),
 194           ssrc);
 195     }
 196   }
 197
 198   stream->Rewind();
 199   return result;
 200 }
 201
 202 bool RtpTestUtility::VerifyPacket(const RtpDumpPacket* dump,
 203                                   const RawRtpPacket* raw,
 204                                   bool header_only) {
 205   if (!dump || !raw) return false;
 206
 207   rtc::ByteBuffer buf;
 208   raw->WriteToByteBuffer(RtpTestUtility::kDefaultSsrc, &buf);
 209
 210   if (header_only) {
 211     size_t header_len = 0;
 212     dump->GetRtpHeaderLen(&header_len);
 213     return header_len == dump->data.size() &&
 214         buf.Length() > dump->data.size() &&
 215         0 == memcmp(buf.Data(), &dump->data[0], dump->data.size());
 216   } else {
 217     return buf.Length() == dump->data.size() &&
 218         0 == memcmp(buf.Data(), &dump->data[0], dump->data.size());
 219   }
 220 }
 221
 222 // Implementation of VideoCaptureListener.
 223 VideoCapturerListener::VideoCapturerListener(VideoCapturer* capturer)
 224     : last_capture_state_(CS_STARTING),
 225       frame_count_(0),
 226       frame_fourcc_(0),
 227       frame_width_(0),
 228       frame_height_(0),
 229       frame_size_(0),
 230       resolution_changed_(false) {
 231   capturer->SignalStateChange.connect(this,
 232       &VideoCapturerListener::OnStateChange);
 233   capturer->SignalFrameCaptured.connect(this,
 234       &VideoCapturerListener::OnFrameCaptured);
 235 }
 236
 237 void VideoCapturerListener::OnStateChange(VideoCapturer* capturer,
 238                                           CaptureState result) {
 239   last_capture_state_ = result;
 240 }
 241
 242 void VideoCapturerListener::OnFrameCaptured(VideoCapturer* capturer,
 243                                             const CapturedFrame* frame) {
 244   ++frame_count_;
 245   if (1 == frame_count_) {
 246     frame_fourcc_ = frame->fourcc;
 247     frame_width_ = frame->width;
 248     frame_height_ = frame->height;
 249     frame_size_ = frame->data_size;
 250   } else if (frame_width_ != frame->width || frame_height_ != frame->height) {
 251     resolution_changed_ = true;
 252   }
 253 }
 254
 255 // Returns the absolute path to a file in the testdata/ directory.
 256 std::string GetTestFilePath(const std::string& filename) {
 257   // Locate test data directory.
 258   rtc::Pathname path = testing::GetTalkDirectory();
 259   EXPECT_FALSE(path.empty());  // must be run from inside "talk"
 260   path.AppendFolder("media");
 261   path.AppendFolder("testdata");
 262   path.SetFilename(filename);
 263   return path.pathname();
 264 }
 265
 266 // Loads the image with the specified prefix and size into |out|.
 267 bool LoadPlanarYuvTestImage(const std::string& prefix,
 268                             int width, int height, uint8* out) {
 269   std::stringstream ss;
 270   ss << prefix << "." << width << "x" << height << "_P420.yuv";
 271
 272   rtc::scoped_ptr<rtc::FileStream> stream(
 273       rtc::Filesystem::OpenFile(rtc::Pathname(
 274           GetTestFilePath(ss.str())), "rb"));
 275   if (!stream) {
 276     return false;
 277   }
 278
 279   rtc::StreamResult res =
 280       stream->ReadAll(out, I420_SIZE(width, height), NULL, NULL);
 281   return (res == rtc::SR_SUCCESS);
 282 }
 283
 284 // Dumps the YUV image out to a file, for visual inspection.
 285 // PYUV tool can be used to view dump files.
 286 void DumpPlanarYuvTestImage(const std::string& prefix, const uint8* img,
 287                             int w, int h) {
 288   rtc::FileStream fs;
 289   char filename[256];
 290   rtc::sprintfn(filename, sizeof(filename), "%s.%dx%d_P420.yuv",
 291                       prefix.c_str(), w, h);
 292   fs.Open(filename, "wb", NULL);
 293   fs.Write(img, I420_SIZE(w, h), NULL, NULL);
 294 }
 295
 296 // Dumps the ARGB image out to a file, for visual inspection.
 297 // ffplay tool can be used to view dump files.
 298 void DumpPlanarArgbTestImage(const std::string& prefix, const uint8* img,
 299                              int w, int h) {
 300   rtc::FileStream fs;
 301   char filename[256];
 302   rtc::sprintfn(filename, sizeof(filename), "%s.%dx%d_ARGB.raw",
 303                       prefix.c_str(), w, h);
 304   fs.Open(filename, "wb", NULL);
 305   fs.Write(img, ARGB_SIZE(w, h), NULL, NULL);
 306 }
 307
 308 bool VideoFrameEqual(const VideoFrame* frame0, const VideoFrame* frame1) {
 309   const uint8* y0 = frame0->GetYPlane();
 310   const uint8* u0 = frame0->GetUPlane();
 311   const uint8* v0 = frame0->GetVPlane();
 312   const uint8* y1 = frame1->GetYPlane();
 313   const uint8* u1 = frame1->GetUPlane();
 314   const uint8* v1 = frame1->GetVPlane();
 315
 316   for (size_t i = 0; i < frame0->GetHeight(); ++i) {
 317     if (0 != memcmp(y0, y1, frame0->GetWidth())) {
 318       return false;
 319     }
 320     y0 += frame0->GetYPitch();
 321     y1 += frame1->GetYPitch();
 322   }
 323
 324   for (size_t i = 0; i < frame0->GetChromaHeight(); ++i) {
 325     if (0 != memcmp(u0, u1, frame0->GetChromaWidth())) {
 326       return false;
 327     }
 328     if (0 != memcmp(v0, v1, frame0->GetChromaWidth())) {
 329       return false;
 330     }
 331     u0 += frame0->GetUPitch();
 332     v0 += frame0->GetVPitch();
 333     u1 += frame1->GetUPitch();
 334     v1 += frame1->GetVPitch();
 335   }
 336
 337   return true;
 338 }
 339
 340 cricket::StreamParams CreateSimStreamParams(
 341     const std::string& cname, const std::vector<uint32>& ssrcs) {
 342   cricket::StreamParams sp;
 343   cricket::SsrcGroup sg(cricket::kSimSsrcGroupSemantics, ssrcs);
 344   sp.ssrcs = ssrcs;
 345   sp.ssrc_groups.push_back(sg);
 346   sp.cname = cname;
 347   return sp;
 348 }
 349
 350 // There should be an rtx_ssrc per ssrc.
 351 cricket::StreamParams CreateSimWithRtxStreamParams(
 352     const std::string& cname, const std::vector<uint32>& ssrcs,
 353     const std::vector<uint32>& rtx_ssrcs) {
 354   cricket::StreamParams sp = CreateSimStreamParams(cname, ssrcs);
 355   for (size_t i = 0; i < ssrcs.size(); ++i) {
 356     sp.ssrcs.push_back(rtx_ssrcs[i]);
 357     std::vector<uint32> fid_ssrcs;
 358     fid_ssrcs.push_back(ssrcs[i]);
 359     fid_ssrcs.push_back(rtx_ssrcs[i]);
 360     cricket::SsrcGroup fid_group(cricket::kFidSsrcGroupSemantics, fid_ssrcs);
 361     sp.ssrc_groups.push_back(fid_group);
 362   }
 363   return sp;
 364 }
 365
 366 }  // namespace cricket