Update receive report SSRCs on RemoveSendStream.

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 2798 matching lines @@
 
 TEST_F(WebRtcVideoChannel2Test, RedRtxPacketDoesntCreateUnsignalledStream) {
   TestReceiveUnsignalledSsrcPacket(kRedRtxPayloadType, false);
 }
 
 void WebRtcVideoChannel2Test::TestReceiverLocalSsrcConfiguration(
     bool receiver_first) {
   EXPECT_TRUE(channel_->SetSendParameters(send_parameters_));
 
   const uint32_t kSenderSsrc = 0xC0FFEE;
+  const uint32_t kSecondSenderSsrc = 0xBADCAFE;
   const uint32_t kReceiverSsrc = 0x4711;
+  const uint32_t kExpectedDefaultReceiverSsrc = 1;
 
   if (receiver_first) {
     AddRecvStream(StreamParams::CreateLegacy(kReceiverSsrc));
     std::vector<FakeVideoReceiveStream*> receive_streams =
         fake_call_->GetVideoReceiveStreams();
     ASSERT_EQ(1u, receive_streams.size());
-    // Bogus local SSRC when we have no sender.
-    EXPECT_EQ(1, receive_streams[0]->GetConfig().rtp.local_ssrc);
+    // Default local SSRC when we have no sender.
+    EXPECT_EQ(kExpectedDefaultReceiverSsrc,
+              receive_streams[0]->GetConfig().rtp.local_ssrc);
   }
   AddSendStream(StreamParams::CreateLegacy(kSenderSsrc));
   if (!receiver_first)
     AddRecvStream(StreamParams::CreateLegacy(kReceiverSsrc));
   std::vector<FakeVideoReceiveStream*> receive_streams =
       fake_call_->GetVideoReceiveStreams();
   ASSERT_EQ(1u, receive_streams.size());
   EXPECT_EQ(kSenderSsrc, receive_streams[0]->GetConfig().rtp.local_ssrc);
+
+  // Removing first sender should fall back to another (in this case the second)
+  // local send stream's SSRC.
+  AddSendStream(StreamParams::CreateLegacy(kSecondSenderSsrc));
+  ASSERT_TRUE(channel_->RemoveSendStream(kSenderSsrc));
+  receive_streams =
+      fake_call_->GetVideoReceiveStreams();
+  ASSERT_EQ(1u, receive_streams.size());
+  EXPECT_EQ(kSecondSenderSsrc, receive_streams[0]->GetConfig().rtp.local_ssrc);
+
+  // Removing the last sender should fall back to default local SSRC.
+  ASSERT_TRUE(channel_->RemoveSendStream(kSecondSenderSsrc));
+  receive_streams =
+      fake_call_->GetVideoReceiveStreams();
+  ASSERT_EQ(1u, receive_streams.size());
+  EXPECT_EQ(kExpectedDefaultReceiverSsrc,
+            receive_streams[0]->GetConfig().rtp.local_ssrc);
 }
 
 TEST_F(WebRtcVideoChannel2Test, ConfiguresLocalSsrc) {
   TestReceiverLocalSsrcConfiguration(false);
 }
 
 TEST_F(WebRtcVideoChannel2Test, ConfiguresLocalSsrcOnExistingReceivers) {
   TestReceiverLocalSsrcConfiguration(true);
 }
 
@@ skipping 360 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