Wire up currently-received video codec to stats.

talk/media/webrtc/webrtcvideoengine2_unittest.cc

 /*
  * libjingle
  * Copyright 2004 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 2652 matching lines @@
   ASSERT_TRUE(channel_->GetStats(&info));
 
   ASSERT_EQ(1u, info.senders.size());
   ASSERT_EQ(1u, info.receivers.size());
 
   EXPECT_NE(sender_sp.ssrc_groups, receiver_sp.ssrc_groups);
   EXPECT_EQ(sender_sp.ssrc_groups, info.senders[0].ssrc_groups);
   EXPECT_EQ(receiver_sp.ssrc_groups, info.receivers[0].ssrc_groups);
 }
 
+TEST_F(WebRtcVideoChannel2Test, MapsReceivedPayloadTypeToCodecName) {
+  FakeVideoReceiveStream* stream = AddRecvStream();
+  webrtc::VideoReceiveStream::Stats stats;
+  cricket::VideoMediaInfo info;
+
+  // Report no codec name before receiving.
+  stream->SetStats(stats);
+  ASSERT_TRUE(channel_->GetStats(&info));
+  EXPECT_STREQ("", info.receivers[0].codec_name.c_str());
+
+  // Report VP8 if we're receiving it.
+  stats.current_payload_type = kDefaultVp8PlType;
+  stream->SetStats(stats);
+  ASSERT_TRUE(channel_->GetStats(&info));
+  EXPECT_STREQ(kVp8CodecName, info.receivers[0].codec_name.c_str());
+
+  // Report no codec name for unknown playload types.
+  stats.current_payload_type = 3;
+  stream->SetStats(stats);
+  ASSERT_TRUE(channel_->GetStats(&info));
+  EXPECT_STREQ("", info.receivers[0].codec_name.c_str());
+}
+
 void WebRtcVideoChannel2Test::TestReceiveUnsignalledSsrcPacket(
     uint8_t payload_type,
     bool expect_created_receive_stream) {
   std::vector<VideoCodec> codecs(engine_.codecs());
   // Add a RED RTX codec.
   VideoCodec red_rtx_codec =
       VideoCodec::CreateRtxCodec(kRedRtxPayloadType, kDefaultRedPlType);
   codecs.push_back(red_rtx_codec);
   EXPECT_TRUE(channel_->SetRecvCodecs(codecs));
 
@@ skipping 482 matching lines @@
 // Ensures that the correct settings are applied to the codec when two temporal
 // layer screencasting is enabled, and that the correct simulcast settings are
 // reapplied when disabling screencasting.
 TEST_F(WebRtcVideoChannel2SimulcastTest,
        DISABLED_TwoTemporalLayerScreencastSettings) {
   // TODO(pbos): Implement.
   FAIL() << "Not implemented.";
 }
 
 }  // namespace cricket