Default enable delay adaptation during DTX.

Bug: webrtc:10736
Change-Id: I5dcc431211c6c1c89b4d7d1ab07b23d63c0550d3
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/201385
Reviewed-by: Ivo Creusen <ivoc@webrtc.org>
Commit-Queue: Jakob Ivarsson <jakobi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32999}
diff --git a/modules/audio_coding/acm2/audio_coding_module_unittest.cc b/modules/audio_coding/acm2/audio_coding_module_unittest.cc
index 590dc30..a83d968 100644
--- a/modules/audio_coding/acm2/audio_coding_module_unittest.cc
+++ b/modules/audio_coding/acm2/audio_coding_module_unittest.cc
@@ -939,58 +939,58 @@
     defined(WEBRTC_CODEC_ILBC)
 TEST_F(AcmReceiverBitExactnessOldApi, 8kHzOutput) {
   std::string others_checksum_reference =
-      GetCPUInfo(kAVX2) != 0 ? "1d7b784031599e2c01a3f575f8439f2f"
-                             : "c119fda4ea2c119ff2a720fd0c289071";
+      GetCPUInfo(kAVX2) != 0 ? "e0c966d7b8c36ff60167988fa35d33e0"
+                             : "7d8f6b84abd1e57ec010a53bc2130652";
   std::string win64_checksum_reference =
       GetCPUInfo(kAVX2) != 0 ? "405a50f0bcb8827e20aa944299fc59f6"
-                             : "38e70d4e186f8e1a56b929fafcb7c379";
+                             : "0ed5830930f5527a01bbec0ba11f8541";
   Run(8000,
       PlatformChecksum(others_checksum_reference, win64_checksum_reference,
-                       "3b03e41731e1cef5ae2b9f9618660b42",
+                       "b892ed69c38b21b16c132ec2ce03aa7b",
                        "4598140b5e4f7ee66c5adad609e65a3e",
-                       "da7e76687c8c0a9509cd1d57ee1aba3b"));
+                       "5fec8d770778ef7969ec98c56d9eb10f"));
 }
 
 TEST_F(AcmReceiverBitExactnessOldApi, 16kHzOutput) {
   std::string others_checksum_reference =
-      GetCPUInfo(kAVX2) != 0 ? "8884d910e443c244d8593c2e3cef5e63"
-                             : "36dc8c0532ba0efa099e2b6a689cde40";
+      GetCPUInfo(kAVX2) != 0 ? "a63c578e1195c8420f453962c6d8519c"
+                             : "6bac83762c1306b932cd25a560155681";
   std::string win64_checksum_reference =
       GetCPUInfo(kAVX2) != 0 ? "58fd62a5c49ee513f9fa6fe7dbf62c97"
-                             : "07e4b388168e273fa19da0a167aff782";
+                             : "0509cf0672f543efb4b050e8cffefb1d";
   Run(16000,
       PlatformChecksum(others_checksum_reference, win64_checksum_reference,
-                       "06b08d14a72f6e7c72840b1cc9ad204d",
+                       "3cea9abbeabbdea9a79719941b241af5",
                        "f2aad418af974a3b1694d5ae5cc2c3c7",
-                       "1d5f9a93f3975e7e491373b81eb5fd14"));
+                       "9d4b92c31c00e321a4cff29ad002d6a2"));
 }
 
 TEST_F(AcmReceiverBitExactnessOldApi, 32kHzOutput) {
   std::string others_checksum_reference =
-      GetCPUInfo(kAVX2) != 0 ? "73f4fe21996c0af495e2c47e3708e519"
-                             : "c848ce9002d3825056a1eac2a067c0d3";
+      GetCPUInfo(kAVX2) != 0 ? "8775ce387f44dc5ff4a26da295d5ee7c"
+                             : "e319222ca47733709f90fdf33c8574db";
   std::string win64_checksum_reference =
       GetCPUInfo(kAVX2) != 0 ? "04ce6a1dac5ffdd8438d804623d0132f"
-                             : "0e705f6844c75fd57a84734f7c30af87";
+                             : "39a4a7a1c455b35baeffb9fd193d7858";
   Run(32000,
       PlatformChecksum(others_checksum_reference, win64_checksum_reference,
-                       "c18e98e5701ec91bba5c026b720d1790",
+                       "4df55b3b62bcbf4328786d474ae87f61",
                        "100869c8dcde51346c2073e52a272d98",
-                       "e35df943bfa3ca32e86b26bf1e37ed8f"));
+                       "ff58d3153d2780a3df6bc2068844cb2d"));
 }
 
 TEST_F(AcmReceiverBitExactnessOldApi, 48kHzOutput) {
   std::string others_checksum_reference =
-      GetCPUInfo(kAVX2) != 0 ? "884243f7e1476931e93eda5de88d1326"
-                             : "ba0f66d538487bba377e721cfac62d1e";
+      GetCPUInfo(kAVX2) != 0 ? "7a55700b7ca9aa60237db58b33e55606"
+                             : "57d1d316c88279f4f3da3511665069a9";
   std::string win64_checksum_reference =
       GetCPUInfo(kAVX2) != 0 ? "f59833d9b0924f4b0704707dd3589f80"
-                             : "6a480541fb86faa95c7563b9de08104d";
+                             : "74cbe7345e2b6b45c1e455a5d1e921ca";
   Run(48000,
       PlatformChecksum(others_checksum_reference, win64_checksum_reference,
-                       "30e617e4b3c9ba1979d1b2e8eba3519b",
+                       "f52bc7bf0f499c9da25932fdf176c4ec",
                        "bd44bf97e7899186532f91235cef444d",
-                       "90158462a1853b1de50873eebd68dba7"));
+                       "364d403dae55d73cd69e6dbd6b723a4d"));
 }
 
 TEST_F(AcmReceiverBitExactnessOldApi, 48kHzOutputExternalDecoder) {
@@ -1069,16 +1069,16 @@
   rtc::scoped_refptr<rtc::RefCountedObject<ADFactory>> factory(
       new rtc::RefCountedObject<ADFactory>);
   std::string others_checksum_reference =
-      GetCPUInfo(kAVX2) != 0 ? "884243f7e1476931e93eda5de88d1326"
-                             : "ba0f66d538487bba377e721cfac62d1e";
+      GetCPUInfo(kAVX2) != 0 ? "7a55700b7ca9aa60237db58b33e55606"
+                             : "57d1d316c88279f4f3da3511665069a9";
   std::string win64_checksum_reference =
       GetCPUInfo(kAVX2) != 0 ? "f59833d9b0924f4b0704707dd3589f80"
-                             : "6a480541fb86faa95c7563b9de08104d";
+                             : "74cbe7345e2b6b45c1e455a5d1e921ca";
   Run(48000,
       PlatformChecksum(others_checksum_reference, win64_checksum_reference,
-                       "30e617e4b3c9ba1979d1b2e8eba3519b",
+                       "f52bc7bf0f499c9da25932fdf176c4ec",
                        "bd44bf97e7899186532f91235cef444d",
-                       "90158462a1853b1de50873eebd68dba7"),
+                       "364d403dae55d73cd69e6dbd6b723a4d"),
       factory, [](AudioCodingModule* acm) {
         acm->SetReceiveCodecs({{0, {"MockPCMu", 8000, 1}},
                                {103, {"ISAC", 16000, 1}},
diff --git a/modules/audio_coding/neteq/decision_logic.cc b/modules/audio_coding/neteq/decision_logic.cc
index 266e675..cb6daf0 100644
--- a/modules/audio_coding/neteq/decision_logic.cc
+++ b/modules/audio_coding/neteq/decision_logic.cc
@@ -50,8 +50,8 @@
       disallow_time_stretching_(!config.allow_time_stretching),
       timescale_countdown_(
           tick_timer_->GetNewCountdown(kMinTimescaleInterval + 1)),
-      estimate_dtx_delay_("estimate_dtx_delay", false),
-      time_stretch_cn_("time_stretch_cn", false),
+      estimate_dtx_delay_("estimate_dtx_delay", true),
+      time_stretch_cn_("time_stretch_cn", true),
       target_level_window_ms_("target_level_window",
                               kDefaultTargetLevelWindowMs,
                               0,
diff --git a/modules/audio_coding/neteq/neteq_impl_unittest.cc b/modules/audio_coding/neteq/neteq_impl_unittest.cc
index c66a0e2..a073d82 100644
--- a/modules/audio_coding/neteq/neteq_impl_unittest.cc
+++ b/modules/audio_coding/neteq/neteq_impl_unittest.cc
@@ -987,15 +987,6 @@
   EXPECT_TRUE(neteq_->RegisterPayloadType(kPayloadType,
                                           SdpAudioFormat("opus", 48000, 2)));
 
-  // Insert one packet (decoder will return speech).
-  EXPECT_EQ(NetEq::kOK, neteq_->InsertPacket(rtp_header, payload));
-
-  // Insert second packet (decoder will return CNG).
-  payload[0] = 1;
-  rtp_header.sequenceNumber++;
-  rtp_header.timestamp += kPayloadLengthSamples;
-  EXPECT_EQ(NetEq::kOK, neteq_->InsertPacket(rtp_header, payload));
-
   const size_t kMaxOutputSize = static_cast<size_t>(10 * kSampleRateKhz);
   AudioFrame output;
   AudioFrame::SpeechType expected_type[8] = {
@@ -1012,11 +1003,20 @@
       50 * kSampleRateKhz,
       10 * kSampleRateKhz};
 
+  // Insert one packet (decoder will return speech).
+  EXPECT_EQ(NetEq::kOK, neteq_->InsertPacket(rtp_header, payload));
+
   bool muted;
   EXPECT_EQ(NetEq::kOK, neteq_->GetAudio(&output, &muted));
   absl::optional<uint32_t> last_timestamp = neteq_->GetPlayoutTimestamp();
   ASSERT_TRUE(last_timestamp);
 
+  // Insert second packet (decoder will return CNG).
+  payload[0] = 1;
+  rtp_header.sequenceNumber++;
+  rtp_header.timestamp += kPayloadLengthSamples;
+  EXPECT_EQ(NetEq::kOK, neteq_->InsertPacket(rtp_header, payload));
+
   // Lambda for verifying the timestamps.
   auto verify_timestamp = [&last_timestamp, &expected_timestamp_increment](
                               absl::optional<uint32_t> ts, size_t i) {
diff --git a/modules/audio_coding/neteq/neteq_unittest.cc b/modules/audio_coding/neteq/neteq_unittest.cc
index c6d514d..d82abf9 100644
--- a/modules/audio_coding/neteq/neteq_unittest.cc
+++ b/modules/audio_coding/neteq/neteq_unittest.cc
@@ -84,16 +84,16 @@
       webrtc::test::ResourcePath("audio_coding/neteq_universal_new", "rtp");
 
   const std::string output_checksum =
-      PlatformChecksum("68ec266d2d152dfc0d938484e7936f6af4f803e3",
-                       "1c243feb35e3e9ab37039eddf5b3c3ecfca3c60c", "not used",
-                       "68ec266d2d152dfc0d938484e7936f6af4f803e3",
-                       "f68c546a43bb25743297c9c0c9027e8424b8e10b");
+      PlatformChecksum("6c35140ce4d75874bdd60aa1872400b05fd05ca2",
+                       "ab451bb8301d9a92fbf4de91556b56f1ea38b4ce", "not used",
+                       "6c35140ce4d75874bdd60aa1872400b05fd05ca2",
+                       "64b46bb3c1165537a880ae8404afce2efba456c0");
 
   const std::string network_stats_checksum =
-      PlatformChecksum("2a5516cdc1c6af9f1d9d3c2f95ed292f509311c7",
-                       "e96a7f081ebc111f49c7373d3728274057012ae9", "not used",
-                       "2a5516cdc1c6af9f1d9d3c2f95ed292f509311c7",
-                       "2a5516cdc1c6af9f1d9d3c2f95ed292f509311c7");
+      PlatformChecksum("90594d85fa31d3d9584d79293bf7aa4ee55ed751",
+                       "77b9c3640b81aff6a38d69d07dd782d39c15321d", "not used",
+                       "90594d85fa31d3d9584d79293bf7aa4ee55ed751",
+                       "90594d85fa31d3d9584d79293bf7aa4ee55ed751");
 
   DecodeAndCompare(input_rtp_file, output_checksum, network_stats_checksum,
                    absl::GetFlag(FLAGS_gen_ref));
@@ -110,18 +110,18 @@
       webrtc::test::ResourcePath("audio_coding/neteq_opus", "rtp");
 
   const std::string maybe_sse =
-      "554ad4133934e3920f97575579a46f674683d77c"
+      "c7887ff60eecf460332c6c7a28c81561f9e8a40f"
       "|de316e2bfb15192edb820fe5fb579d11ff5a524b";
   const std::string output_checksum = PlatformChecksum(
-      maybe_sse, "b3fac4ad4f6ea384aff676ee1ea816bd70415490",
-      "373ccd99c147cd3fcef0e7dcad6f87d0f8e5a1c0", maybe_sse, maybe_sse);
+      maybe_sse, "e39283dd61a89cead3786ef8642d2637cc447296",
+      "53d8073eb848b70974cba9e26424f4946508fd19", maybe_sse, maybe_sse);
 
   const std::string network_stats_checksum =
-      PlatformChecksum("ec29e047b019a86ec06e2c40643143dc1975c69f",
-                       "ce6f519bc1220b003944ac5d9db077665a06834e",
-                       "abb686d3ac6fac0001ca8d45a6ca6f5aefb2f9d6",
-                       "ec29e047b019a86ec06e2c40643143dc1975c69f",
-                       "ec29e047b019a86ec06e2c40643143dc1975c69f");
+      PlatformChecksum("c438bfa3b018f77691279eb9c63730569f54585c",
+                       "8a474ed0992591e0c84f593824bb05979c3de157",
+                       "9a05378dbf7e6edd56cdeb8ec45bcd6d8589623c",
+                       "c438bfa3b018f77691279eb9c63730569f54585c",
+                       "c438bfa3b018f77691279eb9c63730569f54585c");
 
   DecodeAndCompare(input_rtp_file, output_checksum, network_stats_checksum,
                    absl::GetFlag(FLAGS_gen_ref));