Clean up the NetEqFactory API.

This CL decouples NetEqFactory and AudioDecoderFactory.
AudioDecoderFactory is used in more places than just inside of NetEq, so
decoupling these makes sense.

Bug: webrtc:11005
Change-Id: I78dd856e4248e398e69a65816b062ef30555b055
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/161005
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Ivo Creusen <ivoc@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29961}
diff --git a/modules/audio_coding/BUILD.gn b/modules/audio_coding/BUILD.gn
index 4b9d20b..14a1bdc 100644
--- a/modules/audio_coding/BUILD.gn
+++ b/modules/audio_coding/BUILD.gn
@@ -1065,6 +1065,7 @@
   ]
 
   deps = [
+    ":default_neteq_factory",
     ":neteq",
     "../../api:neteq_simulator_api",
     "../../api:rtp_headers",
@@ -1239,11 +1240,11 @@
   deps = [
     ":audio_coding",
     ":audio_coding_module_typedefs",
+    ":default_neteq_factory",
     ":neteq_test_tools",
     ":neteq_tools_minimal",
     ":webrtc_opus_wrapper",
     "..:module_api",
-    "../../api:neteq_factory_with_codecs",
     "../../api:rtp_headers",
     "../../api/audio:audio_frame_api",
     "../../api/audio_codecs:builtin_audio_decoder_factory",
@@ -1630,10 +1631,10 @@
     ]
 
     deps = [
+      ":default_neteq_factory",
       ":neteq",
       ":neteq_test_tools",
       ":pcm16b",
-      "../../api:neteq_factory_with_codecs",
       "../../api/audio:audio_frame_api",
       "../../api/audio_codecs:audio_codecs_api",
       "../../api/audio_codecs:builtin_audio_decoder_factory",
@@ -1655,11 +1656,10 @@
     ]
 
     deps = [
+      ":default_neteq_factory",
       ":neteq",
       ":neteq_test_tools",
       "../../api/audio_codecs:builtin_audio_decoder_factory",
-      "../../api/neteq:custom_neteq_factory",
-      "../../api/neteq:default_neteq_controller_factory",
       "../../api/neteq:neteq_api",
       "../../rtc_base:checks",
       "../../system_wrappers",
@@ -2072,6 +2072,7 @@
       ":audio_coding_opus_common",
       ":audio_encoder_cng",
       ":audio_network_adaptor",
+      ":default_neteq_factory",
       ":g711",
       ":ilbc",
       ":isac",
@@ -2088,7 +2089,6 @@
       ":webrtc_opus",
       "..:module_api",
       "..:module_api_public",
-      "../../api:neteq_factory_with_codecs",
       "../../api/audio:audio_frame_api",
       "../../api/audio_codecs:audio_codecs_api",
       "../../api/audio_codecs:builtin_audio_decoder_factory",
@@ -2097,7 +2097,6 @@
       "../../api/audio_codecs/opus:audio_decoder_opus",
       "../../api/audio_codecs/opus:audio_encoder_multiopus",
       "../../api/audio_codecs/opus:audio_encoder_opus",
-      "../../api/neteq:custom_neteq_factory",
       "../../api/neteq:default_neteq_controller_factory",
       "../../api/neteq:neteq_api",
       "../../api/neteq:neteq_controller_api",
diff --git a/modules/audio_coding/neteq/default_neteq_factory.cc b/modules/audio_coding/neteq/default_neteq_factory.cc
index ca19b08..487450f 100644
--- a/modules/audio_coding/neteq/default_neteq_factory.cc
+++ b/modules/audio_coding/neteq/default_neteq_factory.cc
@@ -28,12 +28,4 @@
                                       controller_factory_));
 }
 
-std::unique_ptr<NetEq> DefaultNetEqFactory::CreateNetEq(
-    const NetEq::Config& /*config*/,
-    Clock* /*clock*/) const {
-  RTC_NOTREACHED() << "Calling CreateNetEq without an AudioDecoderFactory on "
-                      "DefaultNetEqFactory is not supported.";
-  return nullptr;
-}
-
 }  // namespace webrtc
diff --git a/modules/audio_coding/neteq/default_neteq_factory.h b/modules/audio_coding/neteq/default_neteq_factory.h
index 4c5ee9b..24d2bae 100644
--- a/modules/audio_coding/neteq/default_neteq_factory.h
+++ b/modules/audio_coding/neteq/default_neteq_factory.h
@@ -32,8 +32,6 @@
       const NetEq::Config& config,
       const rtc::scoped_refptr<AudioDecoderFactory>& decoder_factory,
       Clock* clock) const override;
-  std::unique_ptr<NetEq> CreateNetEq(const NetEq::Config& config,
-                                     Clock* clock) const override;
 
  private:
   const DefaultNetEqControllerFactory controller_factory_;
diff --git a/modules/audio_coding/neteq/neteq_impl_unittest.cc b/modules/audio_coding/neteq/neteq_impl_unittest.cc
index 1731282..33e3d8d 100644
--- a/modules/audio_coding/neteq/neteq_impl_unittest.cc
+++ b/modules/audio_coding/neteq/neteq_impl_unittest.cc
@@ -18,9 +18,9 @@
 #include "api/neteq/default_neteq_controller_factory.h"
 #include "api/neteq/neteq.h"
 #include "api/neteq/neteq_controller.h"
-#include "api/test/neteq_factory_with_codecs.h"
 #include "modules/audio_coding/neteq/accelerate.h"
 #include "modules/audio_coding/neteq/decision_logic.h"
+#include "modules/audio_coding/neteq/default_neteq_factory.h"
 #include "modules/audio_coding/neteq/expand.h"
 #include "modules/audio_coding/neteq/histogram.h"
 #include "modules/audio_coding/neteq/mock/mock_decoder_database.h"
@@ -252,8 +252,9 @@
 TEST(NetEq, CreateAndDestroy) {
   NetEq::Config config;
   SimulatedClock clock(0);
-  std::unique_ptr<NetEqFactory> neteq_factory = CreateNetEqFactoryWithCodecs();
-  std::unique_ptr<NetEq> neteq = neteq_factory->CreateNetEq(config, &clock);
+  auto decoder_factory = CreateBuiltinAudioDecoderFactory();
+  std::unique_ptr<NetEq> neteq =
+      DefaultNetEqFactory().CreateNetEq(config, decoder_factory, &clock);
 }
 
 TEST_F(NetEqImplTest, RegisterPayloadType) {
diff --git a/modules/audio_coding/neteq/neteq_network_stats_unittest.cc b/modules/audio_coding/neteq/neteq_network_stats_unittest.cc
index 0e24f68..d35c44c 100644
--- a/modules/audio_coding/neteq/neteq_network_stats_unittest.cc
+++ b/modules/audio_coding/neteq/neteq_network_stats_unittest.cc
@@ -13,9 +13,9 @@
 #include "absl/memory/memory.h"
 #include "api/audio/audio_frame.h"
 #include "api/audio_codecs/audio_decoder.h"
-#include "api/neteq/custom_neteq_factory.h"
-#include "api/neteq/default_neteq_controller_factory.h"
+#include "api/audio_codecs/builtin_audio_decoder_factory.h"
 #include "api/neteq/neteq.h"
+#include "modules/audio_coding/neteq/default_neteq_factory.h"
 #include "modules/audio_coding/neteq/tools/rtp_generator.h"
 #include "rtc_base/ref_counted_object.h"
 #include "system_wrappers/include/clock.h"
@@ -31,9 +31,7 @@
     const NetEq::Config& config,
     Clock* clock,
     const rtc::scoped_refptr<AudioDecoderFactory>& decoder_factory) {
-  CustomNetEqFactory neteq_factory(
-      decoder_factory, std::make_unique<DefaultNetEqControllerFactory>());
-  return neteq_factory.CreateNetEq(config, clock);
+  return DefaultNetEqFactory().CreateNetEq(config, decoder_factory, clock);
 }
 
 }  // namespace
diff --git a/modules/audio_coding/neteq/neteq_stereo_unittest.cc b/modules/audio_coding/neteq/neteq_stereo_unittest.cc
index 14979ae..515fd9b 100644
--- a/modules/audio_coding/neteq/neteq_stereo_unittest.cc
+++ b/modules/audio_coding/neteq/neteq_stereo_unittest.cc
@@ -18,8 +18,8 @@
 #include "api/audio/audio_frame.h"
 #include "api/audio_codecs/builtin_audio_decoder_factory.h"
 #include "api/neteq/neteq.h"
-#include "api/test/neteq_factory_with_codecs.h"
 #include "modules/audio_coding/codecs/pcm16b/pcm16b.h"
+#include "modules/audio_coding/neteq/default_neteq_factory.h"
 #include "modules/audio_coding/neteq/tools/input_audio_file.h"
 #include "modules/audio_coding/neteq/tools/rtp_generator.h"
 #include "rtc_base/strings/string_builder.h"
@@ -68,10 +68,10 @@
         last_arrival_time_(0) {
     NetEq::Config config;
     config.sample_rate_hz = sample_rate_hz_;
-    std::unique_ptr<NetEqFactory> neteq_factory =
-        CreateNetEqFactoryWithCodecs();
-    neteq_mono_ = neteq_factory->CreateNetEq(config, &clock_);
-    neteq_ = neteq_factory->CreateNetEq(config, &clock_);
+    DefaultNetEqFactory neteq_factory;
+    auto decoder_factory = CreateBuiltinAudioDecoderFactory();
+    neteq_mono_ = neteq_factory.CreateNetEq(config, decoder_factory, &clock_);
+    neteq_ = neteq_factory.CreateNetEq(config, decoder_factory, &clock_);
     input_ = new int16_t[frame_size_samples_];
     encoded_ = new uint8_t[2 * frame_size_samples_];
     input_multi_channel_ = new int16_t[frame_size_samples_ * num_channels_];
diff --git a/modules/audio_coding/neteq/neteq_unittest.cc b/modules/audio_coding/neteq/neteq_unittest.cc
index a96812c..098bcc2 100644
--- a/modules/audio_coding/neteq/neteq_unittest.cc
+++ b/modules/audio_coding/neteq/neteq_unittest.cc
@@ -23,7 +23,6 @@
 #include "absl/flags/flag.h"
 #include "api/audio/audio_frame.h"
 #include "api/audio_codecs/builtin_audio_decoder_factory.h"
-#include "api/test/neteq_factory_with_codecs.h"
 #include "modules/audio_coding/codecs/pcm16b/pcm16b.h"
 #include "modules/audio_coding/neteq/test/neteq_decoding_test.h"
 #include "modules/audio_coding/neteq/tools/audio_loop.h"
diff --git a/modules/audio_coding/neteq/test/neteq_decoding_test.cc b/modules/audio_coding/neteq/test/neteq_decoding_test.cc
index 24f10cd..11b1b1a 100644
--- a/modules/audio_coding/neteq/test/neteq_decoding_test.cc
+++ b/modules/audio_coding/neteq/test/neteq_decoding_test.cc
@@ -10,8 +10,9 @@
 
 #include "modules/audio_coding/neteq/test/neteq_decoding_test.h"
 
+#include "api/audio_codecs/builtin_audio_decoder_factory.h"
 #include "api/rtp_headers.h"
-#include "api/test/neteq_factory_with_codecs.h"
+#include "modules/audio_coding/neteq/default_neteq_factory.h"
 #include "modules/audio_coding/neteq/test/result_sink.h"
 #include "rtc_base/strings/string_builder.h"
 #include "test/testsupport/file_utils.h"
@@ -81,8 +82,8 @@
 }
 
 void NetEqDecodingTest::SetUp() {
-  std::unique_ptr<NetEqFactory> neteq_factory = CreateNetEqFactoryWithCodecs();
-  neteq_ = neteq_factory->CreateNetEq(config_, &clock_);
+  auto decoder_factory = CreateBuiltinAudioDecoderFactory();
+  neteq_ = DefaultNetEqFactory().CreateNetEq(config_, decoder_factory, &clock_);
   NetEqNetworkStatistics stat;
   ASSERT_EQ(0, neteq_->NetworkStatistics(&stat));
   algorithmic_delay_ms_ = stat.current_buffer_size_ms;
@@ -421,8 +422,9 @@
 }
 
 void NetEqDecodingTestTwoInstances::CreateSecondInstance() {
-  std::unique_ptr<NetEqFactory> neteq_factory = CreateNetEqFactoryWithCodecs();
-  neteq2_ = neteq_factory->CreateNetEq(config2_, &clock_);
+  auto decoder_factory = CreateBuiltinAudioDecoderFactory();
+  neteq2_ =
+      DefaultNetEqFactory().CreateNetEq(config2_, decoder_factory, &clock_);
   ASSERT_TRUE(neteq2_);
   LoadDecoders(neteq2_.get());
 }
diff --git a/modules/audio_coding/neteq/tools/neteq_performance_test.cc b/modules/audio_coding/neteq/tools/neteq_performance_test.cc
index d963903..1fb853c 100644
--- a/modules/audio_coding/neteq/tools/neteq_performance_test.cc
+++ b/modules/audio_coding/neteq/tools/neteq_performance_test.cc
@@ -11,9 +11,10 @@
 #include "modules/audio_coding/neteq/tools/neteq_performance_test.h"
 
 #include "api/audio/audio_frame.h"
+#include "api/audio_codecs/builtin_audio_decoder_factory.h"
 #include "api/neteq/neteq.h"
-#include "api/test/neteq_factory_with_codecs.h"
 #include "modules/audio_coding/codecs/pcm16b/pcm16b.h"
+#include "modules/audio_coding/neteq/default_neteq_factory.h"
 #include "modules/audio_coding/neteq/tools/audio_loop.h"
 #include "modules/audio_coding/neteq/tools/rtp_generator.h"
 #include "rtc_base/checks.h"
@@ -40,8 +41,9 @@
   NetEq::Config config;
   config.sample_rate_hz = kSampRateHz;
   webrtc::Clock* clock = webrtc::Clock::GetRealTimeClock();
-  std::unique_ptr<NetEqFactory> neteq_factory = CreateNetEqFactoryWithCodecs();
-  auto neteq = neteq_factory->CreateNetEq(config, clock);
+  auto audio_decoder_factory = CreateBuiltinAudioDecoderFactory();
+  auto neteq =
+      DefaultNetEqFactory().CreateNetEq(config, audio_decoder_factory, clock);
   // Register decoder in |neteq|.
   if (!neteq->RegisterPayloadType(kPayloadType,
                                   SdpAudioFormat("l16", kSampRateHz, 1)))
diff --git a/modules/audio_coding/neteq/tools/neteq_quality_test.cc b/modules/audio_coding/neteq/tools/neteq_quality_test.cc
index ba53954..80e3be2 100644
--- a/modules/audio_coding/neteq/tools/neteq_quality_test.cc
+++ b/modules/audio_coding/neteq/tools/neteq_quality_test.cc
@@ -15,8 +15,7 @@
 #include <cmath>
 
 #include "absl/flags/flag.h"
-#include "api/neteq/custom_neteq_factory.h"
-#include "api/neteq/default_neteq_controller_factory.h"
+#include "modules/audio_coding/neteq/default_neteq_factory.h"
 #include "modules/audio_coding/neteq/tools/neteq_quality_test.h"
 #include "modules/audio_coding/neteq/tools/output_audio_file.h"
 #include "modules/audio_coding/neteq/tools/output_wav_file.h"
@@ -95,9 +94,7 @@
     const NetEq::Config& config,
     Clock* clock,
     const rtc::scoped_refptr<AudioDecoderFactory>& decoder_factory) {
-  CustomNetEqFactory neteq_factory(
-      decoder_factory, std::make_unique<DefaultNetEqControllerFactory>());
-  return neteq_factory.CreateNetEq(config, clock);
+  return DefaultNetEqFactory().CreateNetEq(config, decoder_factory, clock);
 }
 
 }  // namespace
diff --git a/modules/audio_coding/neteq/tools/neteq_test.cc b/modules/audio_coding/neteq/tools/neteq_test.cc
index 50d8ba1..a775453 100644
--- a/modules/audio_coding/neteq/tools/neteq_test.cc
+++ b/modules/audio_coding/neteq/tools/neteq_test.cc
@@ -13,8 +13,7 @@
 #include <iomanip>
 #include <iostream>
 
-#include "api/neteq/custom_neteq_factory.h"
-#include "api/neteq/default_neteq_controller_factory.h"
+#include "modules/audio_coding/neteq/default_neteq_factory.h"
 #include "modules/rtp_rtcp/source/byte_io.h"
 #include "system_wrappers/include/clock.h"
 
@@ -43,9 +42,7 @@
     const NetEq::Config& config,
     Clock* clock,
     const rtc::scoped_refptr<AudioDecoderFactory>& decoder_factory) {
-  CustomNetEqFactory neteq_factory(
-      decoder_factory, std::make_unique<DefaultNetEqControllerFactory>());
-  return neteq_factory.CreateNetEq(config, clock);
+  return DefaultNetEqFactory().CreateNetEq(config, decoder_factory, clock);
 }
 
 }  // namespace