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/executablehelpers.h"
  33 #include "talk/media/base/rtpdump.h"
  34 #include "talk/media/base/videocapturer.h"
  35 #include "talk/media/base/videoframe.h"
  36 #include "webrtc/base/bytebuffer.h"
  37 #include "webrtc/base/fileutils.h"
  38 #include "webrtc/base/gunit.h"
  39 #include "webrtc/base/pathutils.h"
  40 #include "webrtc/base/stream.h"
  41 #include "webrtc/base/stringutils.h"
  42 #include "webrtc/base/testutils.h"
  43
  44 namespace cricket {
  45
  46 /////////////////////////////////////////////////////////////////////////
  47 // Implementation of RawRtpPacket
  48 /////////////////////////////////////////////////////////////////////////
  49 void RawRtpPacket::WriteToByteBuffer(
  50     uint32 in_ssrc, rtc::ByteBuffer *buf) const {
  51   if (!buf) return;
  52
  53   buf->WriteUInt8(ver_to_cc);
  54   buf->WriteUInt8(m_to_pt);
  55   buf->WriteUInt16(sequence_number);
  56   buf->WriteUInt32(timestamp);
  57   buf->WriteUInt32(in_ssrc);
  58   buf->WriteBytes(payload, sizeof(payload));
  59 }
  60
  61 bool RawRtpPacket::ReadFromByteBuffer(rtc::ByteBuffer* buf) {
  62   if (!buf) return false;
  63
  64   bool ret = true;
  65   ret &= buf->ReadUInt8(&ver_to_cc);
  66   ret &= buf->ReadUInt8(&m_to_pt);
  67   ret &= buf->ReadUInt16(&sequence_number);
  68   ret &= buf->ReadUInt32(&timestamp);
  69   ret &= buf->ReadUInt32(&ssrc);
  70   ret &= buf->ReadBytes(payload, sizeof(payload));
  71   return ret;
  72 }
  73
  74 bool RawRtpPacket::SameExceptSeqNumTimestampSsrc(
  75     const RawRtpPacket& packet, uint16 seq, uint32 ts, uint32 ssc) const {
  76   return sequence_number == seq &&
  77       timestamp == ts &&
  78       ver_to_cc == packet.ver_to_cc &&
  79       m_to_pt == packet.m_to_pt &&
  80       ssrc == ssc &&
  81       0 == memcmp(payload, packet.payload, sizeof(payload));
  82 }
  83
  84 /////////////////////////////////////////////////////////////////////////
  85 // Implementation of RawRtcpPacket
  86 /////////////////////////////////////////////////////////////////////////
  87 void RawRtcpPacket::WriteToByteBuffer(rtc::ByteBuffer *buf) const {
  88   if (!buf) return;
  89
  90   buf->WriteUInt8(ver_to_count);
  91   buf->WriteUInt8(type);
  92   buf->WriteUInt16(length);
  93   buf->WriteBytes(payload, sizeof(payload));
  94 }
  95
  96 bool RawRtcpPacket::ReadFromByteBuffer(rtc::ByteBuffer* buf) {
  97   if (!buf) return false;
  98
  99   bool ret = true;
 100   ret &= buf->ReadUInt8(&ver_to_count);
 101   ret &= buf->ReadUInt8(&type);
 102   ret &= buf->ReadUInt16(&length);
 103   ret &= buf->ReadBytes(payload, sizeof(payload));
 104   return ret;
 105 }
 106
 107 bool RawRtcpPacket::EqualsTo(const RawRtcpPacket& packet) const {
 108   return ver_to_count == packet.ver_to_count &&
 109       type == packet.type &&
 110       length == packet.length &&
 111       0 == memcmp(payload, packet.payload, sizeof(payload));
 112 }
 113
 114 /////////////////////////////////////////////////////////////////////////
 115 // Implementation of class RtpTestUtility
 116 /////////////////////////////////////////////////////////////////////////
 117 const RawRtpPacket RtpTestUtility::kTestRawRtpPackets[] = {
 118     {0x80, 0, 0, 0,  RtpTestUtility::kDefaultSsrc, "RTP frame 0"},
 119     {0x80, 0, 1, 30, RtpTestUtility::kDefaultSsrc, "RTP frame 1"},
 120     {0x80, 0, 2, 30, RtpTestUtility::kDefaultSsrc, "RTP frame 1"},
 121     {0x80, 0, 3, 60, RtpTestUtility::kDefaultSsrc, "RTP frame 2"}
 122 };
 123 const RawRtcpPacket RtpTestUtility::kTestRawRtcpPackets[] = {
 124     // The Version is 2, the Length is 2, and the payload has 8 bytes.
 125     {0x80, 0, 2, "RTCP0000"},
 126     {0x80, 0, 2, "RTCP0001"},
 127     {0x80, 0, 2, "RTCP0002"},
 128     {0x80, 0, 2, "RTCP0003"},
 129 };
 130
 131 size_t RtpTestUtility::GetTestPacketCount() {
 132   return rtc::_min(
 133       ARRAY_SIZE(kTestRawRtpPackets),
 134       ARRAY_SIZE(kTestRawRtcpPackets));
 135 }
 136
 137 bool RtpTestUtility::WriteTestPackets(
 138     size_t count, bool rtcp, uint32 rtp_ssrc, RtpDumpWriter* writer) {
 139   if (!writer || count > GetTestPacketCount()) return false;
 140
 141   bool result = true;
 142   uint32 elapsed_time_ms = 0;
 143   for (size_t i = 0; i < count && result; ++i) {
 144     rtc::ByteBuffer buf;
 145     if (rtcp) {
 146       kTestRawRtcpPackets[i].WriteToByteBuffer(&buf);
 147     } else {
 148       kTestRawRtpPackets[i].WriteToByteBuffer(rtp_ssrc, &buf);
 149     }
 150
 151     RtpDumpPacket dump_packet(buf.Data(), buf.Length(), elapsed_time_ms, rtcp);
 152     elapsed_time_ms += kElapsedTimeInterval;
 153     result &= (rtc::SR_SUCCESS == writer->WritePacket(dump_packet));
 154   }
 155   return result;
 156 }
 157
 158 bool RtpTestUtility::VerifyTestPacketsFromStream(
 159     size_t count, rtc::StreamInterface* stream, uint32 ssrc) {
 160   if (!stream) return false;
 161
 162   uint32 prev_elapsed_time = 0;
 163   bool result = true;
 164   stream->Rewind();
 165   RtpDumpLoopReader reader(stream);
 166   for (size_t i = 0; i < count && result; ++i) {
 167     // Which loop and which index in the loop are we reading now.
 168     size_t loop = i / GetTestPacketCount();
 169     size_t index = i % GetTestPacketCount();
 170
 171     RtpDumpPacket packet;
 172     result &= (rtc::SR_SUCCESS == reader.ReadPacket(&packet));
 173     // Check the elapsed time of the dump packet.
 174     result &= (packet.elapsed_time >= prev_elapsed_time);
 175     prev_elapsed_time = packet.elapsed_time;
 176
 177     // Check the RTP or RTCP packet.
 178     rtc::ByteBuffer buf(reinterpret_cast<const char*>(&packet.data[0]),
 179                               packet.data.size());
 180     if (packet.is_rtcp()) {
 181       // RTCP packet.
 182       RawRtcpPacket rtcp_packet;
 183       result &= rtcp_packet.ReadFromByteBuffer(&buf);
 184       result &= rtcp_packet.EqualsTo(kTestRawRtcpPackets[index]);
 185     } else {
 186       // RTP packet.
 187       RawRtpPacket rtp_packet;
 188       result &= rtp_packet.ReadFromByteBuffer(&buf);
 189       result &= rtp_packet.SameExceptSeqNumTimestampSsrc(
 190           kTestRawRtpPackets[index],
 191           static_cast<uint16>(kTestRawRtpPackets[index].sequence_number +
 192                               loop * GetTestPacketCount()),
 193           static_cast<uint32>(kTestRawRtpPackets[index].timestamp +
 194                               loop * kRtpTimestampIncrease),
 195           ssrc);
 196     }
 197   }
 198
 199   stream->Rewind();
 200   return result;
 201 }
 202
 203 bool RtpTestUtility::VerifyPacket(const RtpDumpPacket* dump,
 204                                   const RawRtpPacket* raw,
 205                                   bool header_only) {
 206   if (!dump || !raw) return false;
 207
 208   rtc::ByteBuffer buf;
 209   raw->WriteToByteBuffer(RtpTestUtility::kDefaultSsrc, &buf);
 210
 211   if (header_only) {
 212     size_t header_len = 0;
 213     dump->GetRtpHeaderLen(&header_len);
 214     return header_len == dump->data.size() &&
 215         buf.Length() > dump->data.size() &&
 216         0 == memcmp(buf.Data(), &dump->data[0], dump->data.size());
 217   } else {
 218     return buf.Length() == dump->data.size() &&
 219         0 == memcmp(buf.Data(), &dump->data[0], dump->data.size());
 220   }
 221 }
 222
 223 // Implementation of VideoCaptureListener.
 224 VideoCapturerListener::VideoCapturerListener(VideoCapturer* capturer)
 225     : last_capture_state_(CS_STARTING),
 226       frame_count_(0),
 227       frame_fourcc_(0),
 228       frame_width_(0),
 229       frame_height_(0),
 230       frame_size_(0),
 231       resolution_changed_(false) {
 232   capturer->SignalStateChange.connect(this,
 233       &VideoCapturerListener::OnStateChange);
 234   capturer->SignalFrameCaptured.connect(this,
 235       &VideoCapturerListener::OnFrameCaptured);
 236 }
 237
 238 void VideoCapturerListener::OnStateChange(VideoCapturer* capturer,
 239                                           CaptureState result) {
 240   last_capture_state_ = result;
 241 }
 242
 243 void VideoCapturerListener::OnFrameCaptured(VideoCapturer* capturer,
 244                                             const CapturedFrame* frame) {
 245   ++frame_count_;
 246   if (1 == frame_count_) {
 247     frame_fourcc_ = frame->fourcc;
 248     frame_width_ = frame->width;
 249     frame_height_ = frame->height;
 250     frame_size_ = frame->data_size;
 251   } else if (frame_width_ != frame->width || frame_height_ != frame->height) {
 252     resolution_changed_ = true;
 253   }
 254 }
 255
 256 // Returns the absolute path to a file in the testdata/ directory.
 257 std::string GetTestFilePath(const std::string& filename) {
 258   // Locate test data directory.
 259 #ifdef ENABLE_WEBRTC
 260   rtc::Pathname path = rtc::GetExecutablePath();
 261   EXPECT_FALSE(path.empty());
 262   path.AppendPathname("../../talk/");
 263 #else
 264   rtc::Pathname path = testing::GetTalkDirectory();
 265   EXPECT_FALSE(path.empty());  // must be run from inside "talk"
 266 #endif
 267   path.AppendFolder("media/testdata/");
 268   path.SetFilename(filename);
 269   return path.pathname();
 270 }
 271
 272 // Loads the image with the specified prefix and size into |out|.
 273 bool LoadPlanarYuvTestImage(const std::string& prefix,
 274                             int width, int height, uint8* out) {
 275   std::stringstream ss;
 276   ss << prefix << "." << width << "x" << height << "_P420.yuv";
 277
 278   rtc::scoped_ptr<rtc::FileStream> stream(
 279       rtc::Filesystem::OpenFile(rtc::Pathname(
 280           GetTestFilePath(ss.str())), "rb"));
 281   if (!stream) {
 282     return false;
 283   }
 284
 285   rtc::StreamResult res =
 286       stream->ReadAll(out, I420_SIZE(width, height), NULL, NULL);
 287   return (res == rtc::SR_SUCCESS);
 288 }
 289
 290 // Dumps the YUV image out to a file, for visual inspection.
 291 // PYUV tool can be used to view dump files.
 292 void DumpPlanarYuvTestImage(const std::string& prefix, const uint8* img,
 293                             int w, int h) {
 294   rtc::FileStream fs;
 295   char filename[256];
 296   rtc::sprintfn(filename, sizeof(filename), "%s.%dx%d_P420.yuv",
 297                       prefix.c_str(), w, h);
 298   fs.Open(filename, "wb", NULL);
 299   fs.Write(img, I420_SIZE(w, h), NULL, NULL);
 300 }
 301
 302 // Dumps the ARGB image out to a file, for visual inspection.
 303 // ffplay tool can be used to view dump files.
 304 void DumpPlanarArgbTestImage(const std::string& prefix, const uint8* img,
 305                              int w, int h) {
 306   rtc::FileStream fs;
 307   char filename[256];
 308   rtc::sprintfn(filename, sizeof(filename), "%s.%dx%d_ARGB.raw",
 309                       prefix.c_str(), w, h);
 310   fs.Open(filename, "wb", NULL);
 311   fs.Write(img, ARGB_SIZE(w, h), NULL, NULL);
 312 }
 313
 314 bool VideoFrameEqual(const VideoFrame* frame0, const VideoFrame* frame1) {
 315   const uint8* y0 = frame0->GetYPlane();
 316   const uint8* u0 = frame0->GetUPlane();
 317   const uint8* v0 = frame0->GetVPlane();
 318   const uint8* y1 = frame1->GetYPlane();
 319   const uint8* u1 = frame1->GetUPlane();
 320   const uint8* v1 = frame1->GetVPlane();
 321
 322   for (size_t i = 0; i < frame0->GetHeight(); ++i) {
 323     if (0 != memcmp(y0, y1, frame0->GetWidth())) {
 324       return false;
 325     }
 326     y0 += frame0->GetYPitch();
 327     y1 += frame1->GetYPitch();
 328   }
 329
 330   for (size_t i = 0; i < frame0->GetChromaHeight(); ++i) {
 331     if (0 != memcmp(u0, u1, frame0->GetChromaWidth())) {
 332       return false;
 333     }
 334     if (0 != memcmp(v0, v1, frame0->GetChromaWidth())) {
 335       return false;
 336     }
 337     u0 += frame0->GetUPitch();
 338     v0 += frame0->GetVPitch();
 339     u1 += frame1->GetUPitch();
 340     v1 += frame1->GetVPitch();
 341   }
 342
 343   return true;
 344 }
 345
 346 cricket::StreamParams CreateSimStreamParams(
 347     const std::string& cname, const std::vector<uint32>& ssrcs) {
 348   cricket::StreamParams sp;
 349   cricket::SsrcGroup sg(cricket::kSimSsrcGroupSemantics, ssrcs);
 350   sp.ssrcs = ssrcs;
 351   sp.ssrc_groups.push_back(sg);
 352   sp.cname = cname;
 353   return sp;
 354 }
 355
 356 // There should be an rtx_ssrc per ssrc.
 357 cricket::StreamParams CreateSimWithRtxStreamParams(
 358     const std::string& cname, const std::vector<uint32>& ssrcs,
 359     const std::vector<uint32>& rtx_ssrcs) {
 360   cricket::StreamParams sp = CreateSimStreamParams(cname, ssrcs);
 361   for (size_t i = 0; i < ssrcs.size(); ++i) {
 362     sp.ssrcs.push_back(rtx_ssrcs[i]);
 363     std::vector<uint32> fid_ssrcs;
 364     fid_ssrcs.push_back(ssrcs[i]);
 365     fid_ssrcs.push_back(rtx_ssrcs[i]);
 366     cricket::SsrcGroup fid_group(cricket::kFidSsrcGroupSemantics, fid_ssrcs);
 367     sp.ssrc_groups.push_back(fid_group);
 368   }
 369   return sp;
 370 }
 371
 372 }  // namespace cricket