api/audio_codecs/test/audio_encoder_factory_template_unittest.cc - src - Git at Google

 /*
  *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */

 #include "api/audio_codecs/audio_encoder_factory_template.h"

 #include <memory>
 #include <utility>
 #include <vector>

 #include "absl/types/optional.h"
 #include "api/audio_codecs/L16/audio_encoder_L16.h"
 #include "api/audio_codecs/audio_codec_pair_id.h"
 #include "api/audio_codecs/audio_encoder.h"
 #include "api/audio_codecs/audio_encoder_factory.h"
 #include "api/audio_codecs/audio_format.h"
 #include "api/audio_codecs/g711/audio_encoder_g711.h"
 #include "api/audio_codecs/g722/audio_encoder_g722.h"
 #include "api/audio_codecs/ilbc/audio_encoder_ilbc.h"
 #include "api/audio_codecs/opus/audio_encoder_opus.h"
 #include "api/environment/environment.h"
 #include "api/environment/environment_factory.h"
 #include "api/make_ref_counted.h"
 #include "api/scoped_refptr.h"
 #include "test/gmock.h"
 #include "test/gtest.h"
 #include "test/mock_audio_encoder.h"
 #include "test/scoped_key_value_config.h"

 namespace webrtc {
 namespace {

 using ::testing::IsNull;
 using ::testing::NiceMock;
 using ::testing::Pointer;
 using ::testing::Property;
 using ::testing::Return;

 struct BogusParams {
   static SdpAudioFormat AudioFormat() { return {"bogus", 8000, 1}; }
   static AudioCodecInfo CodecInfo() { return {8000, 1, 12345}; }
 };

 struct ShamParams {
   static SdpAudioFormat AudioFormat() {
     return {"sham", 16000, 2, {{"param", "value"}}};
   }
   static AudioCodecInfo CodecInfo() { return {16000, 2, 23456}; }
 };

 template <typename Params>
 struct AudioEncoderFakeApi {
   struct Config {
     SdpAudioFormat audio_format;
   };

   static absl::optional<Config> SdpToConfig(
       const SdpAudioFormat& audio_format) {
     if (Params::AudioFormat() == audio_format) {
       Config config = {audio_format};
       return config;
     } else {
       return absl::nullopt;
     }
   }

   static void AppendSupportedEncoders(std::vector<AudioCodecSpec>* specs) {
     specs->push_back({Params::AudioFormat(), Params::CodecInfo()});
   }

   static AudioCodecInfo QueryAudioEncoder(const Config&) {
     return Params::CodecInfo();
   }

   static std::unique_ptr<AudioEncoder> MakeAudioEncoder(
       const Config&,
       int payload_type,
       absl::optional<AudioCodecPairId> /*codec_pair_id*/ = absl::nullopt) {
     auto enc = std::make_unique<testing::StrictMock<MockAudioEncoder>>();
     EXPECT_CALL(*enc, SampleRateHz())
         .WillOnce(::testing::Return(Params::CodecInfo().sample_rate_hz));
     return std::move(enc);
   }
 };

 // Trait to pass as template parameter to `CreateAudioEncoderFactory` with
 // all the functions except the functions to create the audio encoder.
 struct BaseAudioEncoderApi {
   // Create Encoders with different sample rates depending if it is created
   // through V1 or V2 method so that a test may detect which method was used.
   static constexpr int kV1SameRate = 10'000;
   static constexpr int kV2SameRate = 20'000;

   struct Config {};

   static SdpAudioFormat AudioFormat() { return {"fake", 16'000, 2, {}}; }
   static AudioCodecInfo CodecInfo() { return {16'000, 2, 23456}; }

   static absl::optional<Config> SdpToConfig(
       const SdpAudioFormat& audio_format) {
     return Config();
   }

   static void AppendSupportedEncoders(std::vector<AudioCodecSpec>* specs) {
     specs->push_back({AudioFormat(), CodecInfo()});
   }

   static AudioCodecInfo QueryAudioEncoder(const Config&) { return CodecInfo(); }
 };

 struct AudioEncoderApiWithV1Make : BaseAudioEncoderApi {
   static std::unique_ptr<AudioEncoder> MakeAudioEncoder(
       const Config&,
       int payload_type,
       absl::optional<AudioCodecPairId> codec_pair_id) {
     auto encoder = std::make_unique<NiceMock<MockAudioEncoder>>();
     ON_CALL(*encoder, SampleRateHz).WillByDefault(Return(kV1SameRate));
     return encoder;
   }
 };

 struct AudioEncoderApiWithV2Make : BaseAudioEncoderApi {
   static std::unique_ptr<AudioEncoder> MakeAudioEncoder(
       const Environment& env,
       const Config& config,
       const AudioEncoderFactory::Options& options) {
     auto encoder = std::make_unique<NiceMock<MockAudioEncoder>>();
     ON_CALL(*encoder, SampleRateHz).WillByDefault(Return(kV2SameRate));
     return encoder;
   }
 };

 struct AudioEncoderApiWithBothV1AndV2Make : BaseAudioEncoderApi {
   static std::unique_ptr<AudioEncoder> MakeAudioEncoder(
       const Config&,
       int payload_type,
       absl::optional<AudioCodecPairId> codec_pair_id) {
     auto encoder = std::make_unique<NiceMock<MockAudioEncoder>>();
     ON_CALL(*encoder, SampleRateHz).WillByDefault(Return(kV1SameRate));
     return encoder;
   }

   static std::unique_ptr<AudioEncoder> MakeAudioEncoder(
       const Environment& env,
       const Config& config,
       const AudioEncoderFactory::Options& options) {
     auto encoder = std::make_unique<NiceMock<MockAudioEncoder>>();
     ON_CALL(*encoder, SampleRateHz).WillByDefault(Return(kV2SameRate));
     return encoder;
   }
 };

 TEST(AudioEncoderFactoryTemplateTest,
      UsesV1MakeAudioEncoderWhenV2IsNotAvailable) {
   const Environment env = CreateEnvironment();
   auto factory = CreateAudioEncoderFactory<AudioEncoderApiWithV1Make>();

   EXPECT_THAT(
       factory->MakeAudioEncoder(17, BaseAudioEncoderApi::AudioFormat(), {}),
       Pointer(Property(&AudioEncoder::SampleRateHz,
                        BaseAudioEncoderApi::kV1SameRate)));

   EXPECT_THAT(factory->Create(env, BaseAudioEncoderApi::AudioFormat(), {}),
               Pointer(Property(&AudioEncoder::SampleRateHz,
                                BaseAudioEncoderApi::kV1SameRate)));
 }

 TEST(AudioEncoderFactoryTemplateTest,
      PreferV2MakeAudioEncoderWhenBothAreAvailable) {
   const Environment env = CreateEnvironment();
   auto factory =
       CreateAudioEncoderFactory<AudioEncoderApiWithBothV1AndV2Make>();

   EXPECT_THAT(factory->Create(env, BaseAudioEncoderApi::AudioFormat(), {}),
               Pointer(Property(&AudioEncoder::SampleRateHz,
                                BaseAudioEncoderApi::kV2SameRate)));

   // For backward compatibility legacy AudioEncoderFactory::MakeAudioEncoder
   // still can be used, and uses older signature of the Trait::MakeAudioEncoder.
   EXPECT_THAT(
       factory->MakeAudioEncoder(17, BaseAudioEncoderApi::AudioFormat(), {}),
       Pointer(Property(&AudioEncoder::SampleRateHz,
                        BaseAudioEncoderApi::kV1SameRate)));
 }

 TEST(AudioEncoderFactoryTemplateTest, CanUseTraitWithOnlyV2MakeAudioEncoder) {
   const Environment env = CreateEnvironment();
   auto factory = CreateAudioEncoderFactory<AudioEncoderApiWithV2Make>();
   EXPECT_THAT(factory->Create(env, BaseAudioEncoderApi::AudioFormat(), {}),
               Pointer(Property(&AudioEncoder::SampleRateHz,
                                BaseAudioEncoderApi::kV2SameRate)));
 }

 #if GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
 TEST(AudioEncoderFactoryTemplateTest, CrashesWhenV2OnlyTraitUsedWithOlderApi) {
   auto factory = CreateAudioEncoderFactory<AudioEncoderApiWithV2Make>();
   // V2 signature requires Environment that
   // AudioEncoderFactory::MakeAudioEncoder doesn't provide.
   EXPECT_DEATH(
       factory->MakeAudioEncoder(17, BaseAudioEncoderApi::AudioFormat(), {}),
       "");
 }
 #endif

 TEST(AudioEncoderFactoryTemplateTest, NoEncoderTypes) {
   test::ScopedKeyValueConfig field_trials;
   const Environment env = CreateEnvironment(&field_trials);
   rtc::scoped_refptr<AudioEncoderFactory> factory(
       rtc::make_ref_counted<
           audio_encoder_factory_template_impl::AudioEncoderFactoryT<>>());
   EXPECT_THAT(factory->GetSupportedEncoders(), ::testing::IsEmpty());
   EXPECT_EQ(absl::nullopt, factory->QueryAudioEncoder({"foo", 8000, 1}));

   EXPECT_THAT(factory->Create(env, {"bar", 16000, 1}, {}), IsNull());
 }

 TEST(AudioEncoderFactoryTemplateTest, OneEncoderType) {
   const Environment env = CreateEnvironment();
   auto factory = CreateAudioEncoderFactory<AudioEncoderFakeApi<BogusParams>>();
   EXPECT_THAT(factory->GetSupportedEncoders(),
               ::testing::ElementsAre(
                   AudioCodecSpec{{"bogus", 8000, 1}, {8000, 1, 12345}}));
   EXPECT_EQ(absl::nullopt, factory->QueryAudioEncoder({"foo", 8000, 1}));
   EXPECT_EQ(AudioCodecInfo(8000, 1, 12345),
             factory->QueryAudioEncoder({"bogus", 8000, 1}));

   EXPECT_THAT(factory->Create(env, {"bar", 16000, 1}, {}), IsNull());
   EXPECT_THAT(factory->Create(env, {"bogus", 8000, 1}, {}),
               Pointer(Property(&AudioEncoder::SampleRateHz, 8000)));
 }

 TEST(AudioEncoderFactoryTemplateTest, TwoEncoderTypes) {
   const Environment env = CreateEnvironment();
   auto factory = CreateAudioEncoderFactory<AudioEncoderFakeApi<BogusParams>,
                                            AudioEncoderFakeApi<ShamParams>>();
   EXPECT_THAT(factory->GetSupportedEncoders(),
               ::testing::ElementsAre(
                   AudioCodecSpec{{"bogus", 8000, 1}, {8000, 1, 12345}},
                   AudioCodecSpec{{"sham", 16000, 2, {{"param", "value"}}},
                                  {16000, 2, 23456}}));
   EXPECT_EQ(absl::nullopt, factory->QueryAudioEncoder({"foo", 8000, 1}));
   EXPECT_EQ(AudioCodecInfo(8000, 1, 12345),
             factory->QueryAudioEncoder({"bogus", 8000, 1}));
   EXPECT_EQ(
       AudioCodecInfo(16000, 2, 23456),
       factory->QueryAudioEncoder({"sham", 16000, 2, {{"param", "value"}}}));

   EXPECT_THAT(factory->Create(env, {"bar", 16000, 1}, {}), IsNull());
   EXPECT_THAT(factory->Create(env, {"bogus", 8000, 1}, {}),
               Pointer(Property(&AudioEncoder::SampleRateHz, 8000)));
   EXPECT_THAT(factory->Create(env, {"sham", 16000, 2}, {}), IsNull());
   EXPECT_THAT(
       factory->Create(env, {"sham", 16000, 2, {{"param", "value"}}}, {}),
       Pointer(Property(&AudioEncoder::SampleRateHz, 16000)));
 }

 TEST(AudioEncoderFactoryTemplateTest, G711) {
   const Environment env = CreateEnvironment();
   auto factory = CreateAudioEncoderFactory<AudioEncoderG711>();
   EXPECT_THAT(factory->GetSupportedEncoders(),
               ::testing::ElementsAre(
                   AudioCodecSpec{{"PCMU", 8000, 1}, {8000, 1, 64000}},
                   AudioCodecSpec{{"PCMA", 8000, 1}, {8000, 1, 64000}}));
   EXPECT_EQ(absl::nullopt, factory->QueryAudioEncoder({"PCMA", 16000, 1}));
   EXPECT_EQ(AudioCodecInfo(8000, 1, 64000),
             factory->QueryAudioEncoder({"PCMA", 8000, 1}));

   EXPECT_THAT(factory->Create(env, {"PCMU", 16000, 1}, {}), IsNull());
   EXPECT_THAT(factory->Create(env, {"PCMU", 8000, 1}, {}),
               Pointer(Property(&AudioEncoder::SampleRateHz, 8000)));
   EXPECT_THAT(factory->Create(env, {"PCMA", 8000, 1}, {}),
               Pointer(Property(&AudioEncoder::SampleRateHz, 8000)));
 }

 TEST(AudioEncoderFactoryTemplateTest, G722) {
   const Environment env = CreateEnvironment();
   auto factory = CreateAudioEncoderFactory<AudioEncoderG722>();
   EXPECT_THAT(factory->GetSupportedEncoders(),
               ::testing::ElementsAre(
                   AudioCodecSpec{{"G722", 8000, 1}, {16000, 1, 64000}}));
   EXPECT_EQ(absl::nullopt, factory->QueryAudioEncoder({"foo", 8000, 1}));
   EXPECT_EQ(AudioCodecInfo(16000, 1, 64000),
             factory->QueryAudioEncoder({"G722", 8000, 1}));

   EXPECT_THAT(factory->Create(env, {"bar", 16000, 1}, {}), IsNull());
   EXPECT_THAT(factory->Create(env, {"G722", 8000, 1}, {}),
               Pointer(Property(&AudioEncoder::SampleRateHz, 16000)));
 }

 TEST(AudioEncoderFactoryTemplateTest, Ilbc) {
   const Environment env = CreateEnvironment();
   auto factory = CreateAudioEncoderFactory<AudioEncoderIlbc>();
   EXPECT_THAT(factory->GetSupportedEncoders(),
               ::testing::ElementsAre(
                   AudioCodecSpec{{"ILBC", 8000, 1}, {8000, 1, 13333}}));
   EXPECT_EQ(absl::nullopt, factory->QueryAudioEncoder({"foo", 8000, 1}));
   EXPECT_EQ(AudioCodecInfo(8000, 1, 13333),
             factory->QueryAudioEncoder({"ilbc", 8000, 1}));

   EXPECT_THAT(factory->Create(env, {"bar", 8000, 1}, {}), IsNull());
   EXPECT_THAT(factory->Create(env, {"ilbc", 8000, 1}, {}),
               Pointer(Property(&AudioEncoder::SampleRateHz, 8000)));
 }

 TEST(AudioEncoderFactoryTemplateTest, L16) {
   const Environment env = CreateEnvironment();
   auto factory = CreateAudioEncoderFactory<AudioEncoderL16>();
   EXPECT_THAT(
       factory->GetSupportedEncoders(),
       ::testing::ElementsAre(
           AudioCodecSpec{{"L16", 8000, 1}, {8000, 1, 8000 * 16}},
           AudioCodecSpec{{"L16", 16000, 1}, {16000, 1, 16000 * 16}},
           AudioCodecSpec{{"L16", 32000, 1}, {32000, 1, 32000 * 16}},
           AudioCodecSpec{{"L16", 8000, 2}, {8000, 2, 8000 * 16 * 2}},
           AudioCodecSpec{{"L16", 16000, 2}, {16000, 2, 16000 * 16 * 2}},
           AudioCodecSpec{{"L16", 32000, 2}, {32000, 2, 32000 * 16 * 2}}));
   EXPECT_EQ(absl::nullopt, factory->QueryAudioEncoder({"L16", 8000, 0}));
   EXPECT_EQ(AudioCodecInfo(48000, 1, 48000 * 16),
             factory->QueryAudioEncoder({"L16", 48000, 1}));

   EXPECT_THAT(factory->Create(env, {"L16", 8000, 0}, {}), IsNull());
   EXPECT_THAT(factory->Create(env, {"L16", 48000, 2}, {}),
               Pointer(Property(&AudioEncoder::SampleRateHz, 48000)));
 }

 TEST(AudioEncoderFactoryTemplateTest, Opus) {
   const Environment env = CreateEnvironment();
   auto factory = CreateAudioEncoderFactory<AudioEncoderOpus>();
   AudioCodecInfo info = {48000, 1, 32000, 6000, 510000};
   info.allow_comfort_noise = false;
   info.supports_network_adaption = true;
   EXPECT_THAT(
       factory->GetSupportedEncoders(),
       ::testing::ElementsAre(AudioCodecSpec{
           {"opus", 48000, 2, {{"minptime", "10"}, {"useinbandfec", "1"}}},
           info}));
   EXPECT_EQ(absl::nullopt, factory->QueryAudioEncoder({"foo", 8000, 1}));
   EXPECT_EQ(
       info,
       factory->QueryAudioEncoder(
           {"opus", 48000, 2, {{"minptime", "10"}, {"useinbandfec", "1"}}}));

   EXPECT_THAT(factory->Create(env, {"bar", 16000, 1}, {.payload_type = 17}),
               IsNull());
   EXPECT_THAT(factory->Create(env, {"opus", 48000, 2}, {.payload_type = 17}),
               Pointer(Property(&AudioEncoder::SampleRateHz, 48000)));
 }

 }  // namespace
 }  // namespace webrtc
	/*
	* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
	*
	* Use of this source code is governed by a BSD-style license
	* that can be found in the LICENSE file in the root of the source
	* tree. An additional intellectual property rights grant can be found
	* in the file PATENTS. All contributing project authors may
	* be found in the AUTHORS file in the root of the source tree.
	*/

	#include "api/audio_codecs/audio_encoder_factory_template.h"

	#include <memory>
	#include <utility>
	#include <vector>

	#include "absl/types/optional.h"
	#include "api/audio_codecs/L16/audio_encoder_L16.h"
	#include "api/audio_codecs/audio_codec_pair_id.h"
	#include "api/audio_codecs/audio_encoder.h"
	#include "api/audio_codecs/audio_encoder_factory.h"
	#include "api/audio_codecs/audio_format.h"
	#include "api/audio_codecs/g711/audio_encoder_g711.h"
	#include "api/audio_codecs/g722/audio_encoder_g722.h"
	#include "api/audio_codecs/ilbc/audio_encoder_ilbc.h"
	#include "api/audio_codecs/opus/audio_encoder_opus.h"
	#include "api/environment/environment.h"
	#include "api/environment/environment_factory.h"
	#include "api/make_ref_counted.h"
	#include "api/scoped_refptr.h"
	#include "test/gmock.h"
	#include "test/gtest.h"
	#include "test/mock_audio_encoder.h"
	#include "test/scoped_key_value_config.h"

	namespace webrtc {
	namespace {

	using ::testing::IsNull;
	using ::testing::NiceMock;
	using ::testing::Pointer;
	using ::testing::Property;
	using ::testing::Return;

	struct BogusParams {
	static SdpAudioFormat AudioFormat() { return {"bogus", 8000, 1}; }
	static AudioCodecInfo CodecInfo() { return {8000, 1, 12345}; }
	};

	struct ShamParams {
	static SdpAudioFormat AudioFormat() {
	return {"sham", 16000, 2, {{"param", "value"}}};
	}
	static AudioCodecInfo CodecInfo() { return {16000, 2, 23456}; }
	};

	template <typename Params>
	struct AudioEncoderFakeApi {
	struct Config {
	SdpAudioFormat audio_format;
	};

	static absl::optional<Config> SdpToConfig(
	const SdpAudioFormat& audio_format) {
	if (Params::AudioFormat() == audio_format) {
	Config config = {audio_format};
	return config;
	} else {
	return absl::nullopt;
	}
	}

	static void AppendSupportedEncoders(std::vector<AudioCodecSpec>* specs) {
	specs->push_back({Params::AudioFormat(), Params::CodecInfo()});
	}

	static AudioCodecInfo QueryAudioEncoder(const Config&) {
	return Params::CodecInfo();
	}

	static std::unique_ptr<AudioEncoder> MakeAudioEncoder(
	const Config&,
	int payload_type,
	absl::optional<AudioCodecPairId> /codec_pair_id/ = absl::nullopt) {
	auto enc = std::make_unique<testing::StrictMock<MockAudioEncoder>>();
	EXPECT_CALL(*enc, SampleRateHz())
	.WillOnce(::testing::Return(Params::CodecInfo().sample_rate_hz));
	return std::move(enc);
	}
	};

	// Trait to pass as template parameter to `CreateAudioEncoderFactory` with
	// all the functions except the functions to create the audio encoder.
	struct BaseAudioEncoderApi {
	// Create Encoders with different sample rates depending if it is created
	// through V1 or V2 method so that a test may detect which method was used.
	static constexpr int kV1SameRate = 10'000;
	static constexpr int kV2SameRate = 20'000;

	struct Config {};

	static SdpAudioFormat AudioFormat() { return {"fake", 16'000, 2, {}}; }
	static AudioCodecInfo CodecInfo() { return {16'000, 2, 23456}; }

	static absl::optional<Config> SdpToConfig(
	const SdpAudioFormat& audio_format) {
	return Config();
	}

	static void AppendSupportedEncoders(std::vector<AudioCodecSpec>* specs) {
	specs->push_back({AudioFormat(), CodecInfo()});
	}

	static AudioCodecInfo QueryAudioEncoder(const Config&) { return CodecInfo(); }
	};

	struct AudioEncoderApiWithV1Make : BaseAudioEncoderApi {
	static std::unique_ptr<AudioEncoder> MakeAudioEncoder(
	const Config&,
	int payload_type,
	absl::optional<AudioCodecPairId> codec_pair_id) {
	auto encoder = std::make_unique<NiceMock<MockAudioEncoder>>();
	ON_CALL(*encoder, SampleRateHz).WillByDefault(Return(kV1SameRate));
	return encoder;
	}
	};

	struct AudioEncoderApiWithV2Make : BaseAudioEncoderApi {
	static std::unique_ptr<AudioEncoder> MakeAudioEncoder(
	const Environment& env,
	const Config& config,
	const AudioEncoderFactory::Options& options) {
	auto encoder = std::make_unique<NiceMock<MockAudioEncoder>>();
	ON_CALL(*encoder, SampleRateHz).WillByDefault(Return(kV2SameRate));
	return encoder;
	}
	};

	struct AudioEncoderApiWithBothV1AndV2Make : BaseAudioEncoderApi {
	static std::unique_ptr<AudioEncoder> MakeAudioEncoder(
	const Config&,
	int payload_type,
	absl::optional<AudioCodecPairId> codec_pair_id) {
	auto encoder = std::make_unique<NiceMock<MockAudioEncoder>>();
	ON_CALL(*encoder, SampleRateHz).WillByDefault(Return(kV1SameRate));
	return encoder;
	}

	static std::unique_ptr<AudioEncoder> MakeAudioEncoder(
	const Environment& env,
	const Config& config,
	const AudioEncoderFactory::Options& options) {
	auto encoder = std::make_unique<NiceMock<MockAudioEncoder>>();
	ON_CALL(*encoder, SampleRateHz).WillByDefault(Return(kV2SameRate));
	return encoder;
	}
	};

	TEST(AudioEncoderFactoryTemplateTest,
	UsesV1MakeAudioEncoderWhenV2IsNotAvailable) {
	const Environment env = CreateEnvironment();
	auto factory = CreateAudioEncoderFactory<AudioEncoderApiWithV1Make>();

	EXPECT_THAT(
	factory->MakeAudioEncoder(17, BaseAudioEncoderApi::AudioFormat(), {}),
	Pointer(Property(&AudioEncoder::SampleRateHz,
	BaseAudioEncoderApi::kV1SameRate)));

	EXPECT_THAT(factory->Create(env, BaseAudioEncoderApi::AudioFormat(), {}),
	Pointer(Property(&AudioEncoder::SampleRateHz,
	BaseAudioEncoderApi::kV1SameRate)));
	}

	TEST(AudioEncoderFactoryTemplateTest,
	PreferV2MakeAudioEncoderWhenBothAreAvailable) {
	const Environment env = CreateEnvironment();
	auto factory =
	CreateAudioEncoderFactory<AudioEncoderApiWithBothV1AndV2Make>();

	EXPECT_THAT(factory->Create(env, BaseAudioEncoderApi::AudioFormat(), {}),
	Pointer(Property(&AudioEncoder::SampleRateHz,
	BaseAudioEncoderApi::kV2SameRate)));

	// For backward compatibility legacy AudioEncoderFactory::MakeAudioEncoder
	// still can be used, and uses older signature of the Trait::MakeAudioEncoder.
	EXPECT_THAT(
	factory->MakeAudioEncoder(17, BaseAudioEncoderApi::AudioFormat(), {}),
	Pointer(Property(&AudioEncoder::SampleRateHz,
	BaseAudioEncoderApi::kV1SameRate)));
	}

	TEST(AudioEncoderFactoryTemplateTest, CanUseTraitWithOnlyV2MakeAudioEncoder) {
	const Environment env = CreateEnvironment();
	auto factory = CreateAudioEncoderFactory<AudioEncoderApiWithV2Make>();
	EXPECT_THAT(factory->Create(env, BaseAudioEncoderApi::AudioFormat(), {}),
	Pointer(Property(&AudioEncoder::SampleRateHz,
	BaseAudioEncoderApi::kV2SameRate)));
	}

	#if GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
	TEST(AudioEncoderFactoryTemplateTest, CrashesWhenV2OnlyTraitUsedWithOlderApi) {
	auto factory = CreateAudioEncoderFactory<AudioEncoderApiWithV2Make>();
	// V2 signature requires Environment that
	// AudioEncoderFactory::MakeAudioEncoder doesn't provide.
	EXPECT_DEATH(
	factory->MakeAudioEncoder(17, BaseAudioEncoderApi::AudioFormat(), {}),
	"");
	}
	#endif

	TEST(AudioEncoderFactoryTemplateTest, NoEncoderTypes) {
	test::ScopedKeyValueConfig field_trials;
	const Environment env = CreateEnvironment(&field_trials);
	rtc::scoped_refptr<AudioEncoderFactory> factory(
	rtc::make_ref_counted<
	audio_encoder_factory_template_impl::AudioEncoderFactoryT<>>());
	EXPECT_THAT(factory->GetSupportedEncoders(), ::testing::IsEmpty());
	EXPECT_EQ(absl::nullopt, factory->QueryAudioEncoder({"foo", 8000, 1}));

	EXPECT_THAT(factory->Create(env, {"bar", 16000, 1}, {}), IsNull());
	}

	TEST(AudioEncoderFactoryTemplateTest, OneEncoderType) {
	const Environment env = CreateEnvironment();
	auto factory = CreateAudioEncoderFactory<AudioEncoderFakeApi<BogusParams>>();
	EXPECT_THAT(factory->GetSupportedEncoders(),
	::testing::ElementsAre(
	AudioCodecSpec{{"bogus", 8000, 1}, {8000, 1, 12345}}));
	EXPECT_EQ(absl::nullopt, factory->QueryAudioEncoder({"foo", 8000, 1}));
	EXPECT_EQ(AudioCodecInfo(8000, 1, 12345),
	factory->QueryAudioEncoder({"bogus", 8000, 1}));

	EXPECT_THAT(factory->Create(env, {"bar", 16000, 1}, {}), IsNull());
	EXPECT_THAT(factory->Create(env, {"bogus", 8000, 1}, {}),
	Pointer(Property(&AudioEncoder::SampleRateHz, 8000)));
	}

	TEST(AudioEncoderFactoryTemplateTest, TwoEncoderTypes) {
	const Environment env = CreateEnvironment();
	auto factory = CreateAudioEncoderFactory<AudioEncoderFakeApi<BogusParams>,
	AudioEncoderFakeApi<ShamParams>>();
	EXPECT_THAT(factory->GetSupportedEncoders(),
	::testing::ElementsAre(
	AudioCodecSpec{{"bogus", 8000, 1}, {8000, 1, 12345}},
	AudioCodecSpec{{"sham", 16000, 2, {{"param", "value"}}},
	{16000, 2, 23456}}));
	EXPECT_EQ(absl::nullopt, factory->QueryAudioEncoder({"foo", 8000, 1}));
	EXPECT_EQ(AudioCodecInfo(8000, 1, 12345),
	factory->QueryAudioEncoder({"bogus", 8000, 1}));
	EXPECT_EQ(
	AudioCodecInfo(16000, 2, 23456),
	factory->QueryAudioEncoder({"sham", 16000, 2, {{"param", "value"}}}));

	EXPECT_THAT(factory->Create(env, {"bar", 16000, 1}, {}), IsNull());
	EXPECT_THAT(factory->Create(env, {"bogus", 8000, 1}, {}),
	Pointer(Property(&AudioEncoder::SampleRateHz, 8000)));
	EXPECT_THAT(factory->Create(env, {"sham", 16000, 2}, {}), IsNull());
	EXPECT_THAT(
	factory->Create(env, {"sham", 16000, 2, {{"param", "value"}}}, {}),
	Pointer(Property(&AudioEncoder::SampleRateHz, 16000)));
	}

	TEST(AudioEncoderFactoryTemplateTest, G711) {
	const Environment env = CreateEnvironment();
	auto factory = CreateAudioEncoderFactory<AudioEncoderG711>();
	EXPECT_THAT(factory->GetSupportedEncoders(),
	::testing::ElementsAre(
	AudioCodecSpec{{"PCMU", 8000, 1}, {8000, 1, 64000}},
	AudioCodecSpec{{"PCMA", 8000, 1}, {8000, 1, 64000}}));
	EXPECT_EQ(absl::nullopt, factory->QueryAudioEncoder({"PCMA", 16000, 1}));
	EXPECT_EQ(AudioCodecInfo(8000, 1, 64000),
	factory->QueryAudioEncoder({"PCMA", 8000, 1}));

	EXPECT_THAT(factory->Create(env, {"PCMU", 16000, 1}, {}), IsNull());
	EXPECT_THAT(factory->Create(env, {"PCMU", 8000, 1}, {}),
	Pointer(Property(&AudioEncoder::SampleRateHz, 8000)));
	EXPECT_THAT(factory->Create(env, {"PCMA", 8000, 1}, {}),
	Pointer(Property(&AudioEncoder::SampleRateHz, 8000)));
	}

	TEST(AudioEncoderFactoryTemplateTest, G722) {
	const Environment env = CreateEnvironment();
	auto factory = CreateAudioEncoderFactory<AudioEncoderG722>();
	EXPECT_THAT(factory->GetSupportedEncoders(),
	::testing::ElementsAre(
	AudioCodecSpec{{"G722", 8000, 1}, {16000, 1, 64000}}));
	EXPECT_EQ(absl::nullopt, factory->QueryAudioEncoder({"foo", 8000, 1}));
	EXPECT_EQ(AudioCodecInfo(16000, 1, 64000),
	factory->QueryAudioEncoder({"G722", 8000, 1}));

	EXPECT_THAT(factory->Create(env, {"bar", 16000, 1}, {}), IsNull());
	EXPECT_THAT(factory->Create(env, {"G722", 8000, 1}, {}),
	Pointer(Property(&AudioEncoder::SampleRateHz, 16000)));
	}

	TEST(AudioEncoderFactoryTemplateTest, Ilbc) {
	const Environment env = CreateEnvironment();
	auto factory = CreateAudioEncoderFactory<AudioEncoderIlbc>();
	EXPECT_THAT(factory->GetSupportedEncoders(),
	::testing::ElementsAre(
	AudioCodecSpec{{"ILBC", 8000, 1}, {8000, 1, 13333}}));
	EXPECT_EQ(absl::nullopt, factory->QueryAudioEncoder({"foo", 8000, 1}));
	EXPECT_EQ(AudioCodecInfo(8000, 1, 13333),
	factory->QueryAudioEncoder({"ilbc", 8000, 1}));

	EXPECT_THAT(factory->Create(env, {"bar", 8000, 1}, {}), IsNull());
	EXPECT_THAT(factory->Create(env, {"ilbc", 8000, 1}, {}),
	Pointer(Property(&AudioEncoder::SampleRateHz, 8000)));
	}

	TEST(AudioEncoderFactoryTemplateTest, L16) {
	const Environment env = CreateEnvironment();
	auto factory = CreateAudioEncoderFactory<AudioEncoderL16>();
	EXPECT_THAT(
	factory->GetSupportedEncoders(),
	::testing::ElementsAre(
	AudioCodecSpec{{"L16", 8000, 1}, {8000, 1, 8000 * 16}},
	AudioCodecSpec{{"L16", 16000, 1}, {16000, 1, 16000 * 16}},
	AudioCodecSpec{{"L16", 32000, 1}, {32000, 1, 32000 * 16}},
	AudioCodecSpec{{"L16", 8000, 2}, {8000, 2, 8000 * 16 * 2}},
	AudioCodecSpec{{"L16", 16000, 2}, {16000, 2, 16000 * 16 * 2}},
	AudioCodecSpec{{"L16", 32000, 2}, {32000, 2, 32000 * 16 * 2}}));
	EXPECT_EQ(absl::nullopt, factory->QueryAudioEncoder({"L16", 8000, 0}));
	EXPECT_EQ(AudioCodecInfo(48000, 1, 48000 * 16),
	factory->QueryAudioEncoder({"L16", 48000, 1}));

	EXPECT_THAT(factory->Create(env, {"L16", 8000, 0}, {}), IsNull());
	EXPECT_THAT(factory->Create(env, {"L16", 48000, 2}, {}),
	Pointer(Property(&AudioEncoder::SampleRateHz, 48000)));
	}

	TEST(AudioEncoderFactoryTemplateTest, Opus) {
	const Environment env = CreateEnvironment();
	auto factory = CreateAudioEncoderFactory<AudioEncoderOpus>();
	AudioCodecInfo info = {48000, 1, 32000, 6000, 510000};
	info.allow_comfort_noise = false;
	info.supports_network_adaption = true;
	EXPECT_THAT(
	factory->GetSupportedEncoders(),
	::testing::ElementsAre(AudioCodecSpec{
	{"opus", 48000, 2, {{"minptime", "10"}, {"useinbandfec", "1"}}},
	info}));
	EXPECT_EQ(absl::nullopt, factory->QueryAudioEncoder({"foo", 8000, 1}));
	EXPECT_EQ(
	info,
	factory->QueryAudioEncoder(
	{"opus", 48000, 2, {{"minptime", "10"}, {"useinbandfec", "1"}}}));

	EXPECT_THAT(factory->Create(env, {"bar", 16000, 1}, {.payload_type = 17}),
	IsNull());
	EXPECT_THAT(factory->Create(env, {"opus", 48000, 2}, {.payload_type = 17}),
	Pointer(Property(&AudioEncoder::SampleRateHz, 48000)));
	}

	} // namespace
	} // namespace webrtc