modules/audio_coding/test/iSACTest.cc - src - Git at Google

 /*
  *  Copyright (c) 2012 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 "modules/audio_coding/test/iSACTest.h"

 #include <ctype.h>
 #include <stdio.h>
 #include <string.h>

 #ifdef _WIN32
 #include <windows.h>
 #elif defined(WEBRTC_LINUX)
 #include <time.h>
 #else
 #include <sys/time.h>
 #include <time.h>
 #endif

 #include "absl/strings/match.h"
 #include "api/audio_codecs/builtin_audio_decoder_factory.h"
 #include "api/audio_codecs/isac/audio_encoder_isac_float.h"
 #include "modules/audio_coding/codecs/audio_format_conversion.h"
 #include "modules/audio_coding/test/utility.h"
 #include "rtc_base/strings/string_builder.h"
 #include "rtc_base/timeutils.h"
 #include "system_wrappers/include/sleep.h"
 #include "test/gmock.h"
 #include "test/gtest.h"
 #include "test/testsupport/fileutils.h"

 namespace webrtc {

 using ::testing::AnyOf;
 using ::testing::Eq;
 using ::testing::StrCaseEq;

 namespace {

 AudioEncoderIsacFloat::Config MakeConfig(const CodecInst& ci) {
   EXPECT_THAT(ci.plname, StrCaseEq("ISAC"));
   EXPECT_THAT(ci.plfreq, AnyOf(Eq(16000), Eq(32000)));
   EXPECT_THAT(ci.channels, Eq(1u));
   AudioEncoderIsacFloat::Config config;
   config.sample_rate_hz = ci.plfreq;
   EXPECT_THAT(config.IsOk(), Eq(true));
   return config;
 }

 AudioEncoderIsacFloat::Config TweakConfig(
     AudioEncoderIsacFloat::Config config,
     const ACMTestISACConfig& test_config) {
   if (test_config.currentRateBitPerSec > 0) {
     config.bit_rate = test_config.currentRateBitPerSec;
   }
   if (test_config.currentFrameSizeMsec != 0) {
     config.frame_size_ms = test_config.currentFrameSizeMsec;
   }
   EXPECT_THAT(config.IsOk(), Eq(true));
   return config;
 }

 void SetISACConfigDefault(ACMTestISACConfig& isacConfig) {
   isacConfig.currentRateBitPerSec = 0;
   isacConfig.currentFrameSizeMsec = 0;
   isacConfig.encodingMode = -1;
   isacConfig.initRateBitPerSec = 0;
   isacConfig.initFrameSizeInMsec = 0;
   isacConfig.enforceFrameSize = false;
 }

 }  // namespace

 ISACTest::ISACTest(int testMode)
     : _acmA(AudioCodingModule::Create(
           AudioCodingModule::Config(CreateBuiltinAudioDecoderFactory()))),
       _acmB(AudioCodingModule::Create(
           AudioCodingModule::Config(CreateBuiltinAudioDecoderFactory()))),
       _testMode(testMode) {}

 ISACTest::~ISACTest() {}

 void ISACTest::Setup() {
   int codecCntr;
   CodecInst codecParam;

   for (codecCntr = 0; codecCntr < AudioCodingModule::NumberOfCodecs();
        codecCntr++) {
     EXPECT_EQ(0, AudioCodingModule::Codec(codecCntr, &codecParam));
     if (absl::EqualsIgnoreCase(codecParam.plname, "ISAC") &&
         codecParam.plfreq == 16000) {
       memcpy(&_paramISAC16kHz, &codecParam, sizeof(CodecInst));
       _idISAC16kHz = codecCntr;
     }
     if (absl::EqualsIgnoreCase(codecParam.plname, "ISAC") &&
         codecParam.plfreq == 32000) {
       memcpy(&_paramISAC32kHz, &codecParam, sizeof(CodecInst));
       _idISAC32kHz = codecCntr;
     }
   }

   // Register both iSAC-wb & iSAC-swb in both sides as receiver codecs.
   EXPECT_EQ(true, _acmA->RegisterReceiveCodec(_paramISAC16kHz.pltype,
                                               CodecInstToSdp(_paramISAC16kHz)));
   EXPECT_EQ(true, _acmA->RegisterReceiveCodec(_paramISAC32kHz.pltype,
                                               CodecInstToSdp(_paramISAC32kHz)));
   EXPECT_EQ(true, _acmB->RegisterReceiveCodec(_paramISAC16kHz.pltype,
                                               CodecInstToSdp(_paramISAC16kHz)));
   EXPECT_EQ(true, _acmB->RegisterReceiveCodec(_paramISAC32kHz.pltype,
                                               CodecInstToSdp(_paramISAC32kHz)));

   //--- Set A-to-B channel
   _channel_A2B.reset(new Channel);
   EXPECT_EQ(0, _acmA->RegisterTransportCallback(_channel_A2B.get()));
   _channel_A2B->RegisterReceiverACM(_acmB.get());

   //--- Set B-to-A channel
   _channel_B2A.reset(new Channel);
   EXPECT_EQ(0, _acmB->RegisterTransportCallback(_channel_B2A.get()));
   _channel_B2A->RegisterReceiverACM(_acmA.get());

   file_name_swb_ =
       webrtc::test::ResourcePath("audio_coding/testfile32kHz", "pcm");

   _acmB->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
       MakeConfig(_paramISAC16kHz), _paramISAC16kHz.pltype));
   _acmA->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
       MakeConfig(_paramISAC32kHz), _paramISAC32kHz.pltype));

   _inFileA.Open(file_name_swb_, 32000, "rb");
   // Set test length to 500 ms (50 blocks of 10 ms each).
   _inFileA.SetNum10MsBlocksToRead(50);
   // Fast-forward 1 second (100 blocks) since the files start with silence.
   _inFileA.FastForward(100);
   std::string fileNameA = webrtc::test::OutputPath() + "testisac_a.pcm";
   std::string fileNameB = webrtc::test::OutputPath() + "testisac_b.pcm";
   _outFileA.Open(fileNameA, 32000, "wb");
   _outFileB.Open(fileNameB, 32000, "wb");

   while (!_inFileA.EndOfFile()) {
     Run10ms();
   }
   CodecInst receiveCodec;
   EXPECT_EQ(0, _acmA->ReceiveCodec(&receiveCodec));
   EXPECT_EQ(0, _acmB->ReceiveCodec(&receiveCodec));

   _inFileA.Close();
   _outFileA.Close();
   _outFileB.Close();
 }

 void ISACTest::Perform() {
   Setup();

   int16_t testNr = 0;
   ACMTestISACConfig wbISACConfig;
   ACMTestISACConfig swbISACConfig;

   SetISACConfigDefault(wbISACConfig);
   SetISACConfigDefault(swbISACConfig);

   wbISACConfig.currentRateBitPerSec = -1;
   swbISACConfig.currentRateBitPerSec = -1;
   testNr++;
   EncodeDecode(testNr, wbISACConfig, swbISACConfig);

   if (_testMode != 0) {
     SetISACConfigDefault(wbISACConfig);
     SetISACConfigDefault(swbISACConfig);

     wbISACConfig.currentRateBitPerSec = -1;
     swbISACConfig.currentRateBitPerSec = -1;
     wbISACConfig.initRateBitPerSec = 13000;
     wbISACConfig.initFrameSizeInMsec = 60;
     swbISACConfig.initRateBitPerSec = 20000;
     swbISACConfig.initFrameSizeInMsec = 30;
     testNr++;
     EncodeDecode(testNr, wbISACConfig, swbISACConfig);

     SetISACConfigDefault(wbISACConfig);
     SetISACConfigDefault(swbISACConfig);

     wbISACConfig.currentRateBitPerSec = 20000;
     swbISACConfig.currentRateBitPerSec = 48000;
     testNr++;
     EncodeDecode(testNr, wbISACConfig, swbISACConfig);

     wbISACConfig.currentRateBitPerSec = 16000;
     swbISACConfig.currentRateBitPerSec = 30000;
     wbISACConfig.currentFrameSizeMsec = 60;
     testNr++;
     EncodeDecode(testNr, wbISACConfig, swbISACConfig);
   }

   SetISACConfigDefault(wbISACConfig);
   SetISACConfigDefault(swbISACConfig);
   testNr++;
   EncodeDecode(testNr, wbISACConfig, swbISACConfig);

   testNr++;
   if (_testMode == 0) {
     SwitchingSamplingRate(testNr, 4);
   } else {
     SwitchingSamplingRate(testNr, 80);
   }
 }

 void ISACTest::Run10ms() {
   AudioFrame audioFrame;
   EXPECT_GT(_inFileA.Read10MsData(audioFrame), 0);
   EXPECT_GE(_acmA->Add10MsData(audioFrame), 0);
   EXPECT_GE(_acmB->Add10MsData(audioFrame), 0);
   bool muted;
   EXPECT_EQ(0, _acmA->PlayoutData10Ms(32000, &audioFrame, &muted));
   ASSERT_FALSE(muted);
   _outFileA.Write10MsData(audioFrame);
   EXPECT_EQ(0, _acmB->PlayoutData10Ms(32000, &audioFrame, &muted));
   ASSERT_FALSE(muted);
   _outFileB.Write10MsData(audioFrame);
 }

 void ISACTest::EncodeDecode(int testNr,
                             ACMTestISACConfig& wbISACConfig,
                             ACMTestISACConfig& swbISACConfig) {
   // Files in Side A and B
   _inFileA.Open(file_name_swb_, 32000, "rb", true);
   _inFileB.Open(file_name_swb_, 32000, "rb", true);

   std::string file_name_out;
   rtc::StringBuilder file_stream_a;
   rtc::StringBuilder file_stream_b;
   file_stream_a << webrtc::test::OutputPath();
   file_stream_b << webrtc::test::OutputPath();
   file_stream_a << "out_iSACTest_A_" << testNr << ".pcm";
   file_stream_b << "out_iSACTest_B_" << testNr << ".pcm";
   file_name_out = file_stream_a.str();
   _outFileA.Open(file_name_out, 32000, "wb");
   file_name_out = file_stream_b.str();
   _outFileB.Open(file_name_out, 32000, "wb");

   // Side A is sending super-wideband, and side B is sending wideband.
   _acmA->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
       TweakConfig(MakeConfig(_paramISAC32kHz), swbISACConfig),
       _paramISAC32kHz.pltype));
   _acmB->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
       TweakConfig(MakeConfig(_paramISAC16kHz), wbISACConfig),
       _paramISAC16kHz.pltype));

   bool adaptiveMode = false;
   if ((swbISACConfig.currentRateBitPerSec == -1) ||
       (wbISACConfig.currentRateBitPerSec == -1)) {
     adaptiveMode = true;
   }
   _myTimer.Reset();
   _channel_A2B->ResetStats();
   _channel_B2A->ResetStats();

   char currentTime[500];
   int64_t time_ms = rtc::TimeMillis();
   while (!(_inFileA.EndOfFile() || _inFileA.Rewinded())) {
     Run10ms();
     _myTimer.Tick10ms();
     _myTimer.CurrentTimeHMS(currentTime);

     if ((adaptiveMode) && (_testMode != 0)) {
       time_ms += 10;
       int64_t time_left_ms = time_ms - rtc::TimeMillis();
       if (time_left_ms > 0) {
         SleepMs(time_left_ms);
       }

       EXPECT_TRUE(_acmA->SendCodec());
       EXPECT_TRUE(_acmB->SendCodec());
     }
   }

   if (_testMode != 0) {
     printf("\n\nSide A statistics\n\n");
     _channel_A2B->PrintStats(_paramISAC32kHz);

     printf("\n\nSide B statistics\n\n");
     _channel_B2A->PrintStats(_paramISAC16kHz);
   }

   _channel_A2B->ResetStats();
   _channel_B2A->ResetStats();

   _outFileA.Close();
   _outFileB.Close();
   _inFileA.Close();
   _inFileB.Close();
 }

 void ISACTest::SwitchingSamplingRate(int testNr, int maxSampRateChange) {
   // Files in Side A
   _inFileA.Open(file_name_swb_, 32000, "rb");
   _inFileB.Open(file_name_swb_, 32000, "rb");

   std::string file_name_out;
   rtc::StringBuilder file_stream_a;
   rtc::StringBuilder file_stream_b;
   file_stream_a << webrtc::test::OutputPath();
   file_stream_b << webrtc::test::OutputPath();
   file_stream_a << "out_iSACTest_A_" << testNr << ".pcm";
   file_stream_b << "out_iSACTest_B_" << testNr << ".pcm";
   file_name_out = file_stream_a.str();
   _outFileA.Open(file_name_out, 32000, "wb");
   file_name_out = file_stream_b.str();
   _outFileB.Open(file_name_out, 32000, "wb");

   // Start with side A sending super-wideband and side B seding wideband.
   // Toggle sending wideband/super-wideband in this test.
   _acmA->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
       MakeConfig(_paramISAC32kHz), _paramISAC32kHz.pltype));
   _acmB->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
       MakeConfig(_paramISAC16kHz), _paramISAC16kHz.pltype));

   int numSendCodecChanged = 0;
   _myTimer.Reset();
   char currentTime[50];
   while (numSendCodecChanged < (maxSampRateChange << 1)) {
     Run10ms();
     _myTimer.Tick10ms();
     _myTimer.CurrentTimeHMS(currentTime);
     if (_testMode == 2)
       printf("\r%s", currentTime);
     if (_inFileA.EndOfFile()) {
       if (_inFileA.SamplingFrequency() == 16000) {
         // Switch side A to send super-wideband.
         _inFileA.Close();
         _inFileA.Open(file_name_swb_, 32000, "rb");
         _acmA->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
             MakeConfig(_paramISAC32kHz), _paramISAC32kHz.pltype));
       } else {
         // Switch side A to send wideband.
         _inFileA.Close();
         _inFileA.Open(file_name_swb_, 32000, "rb");
         _acmA->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
             MakeConfig(_paramISAC16kHz), _paramISAC16kHz.pltype));
       }
       numSendCodecChanged++;
     }

     if (_inFileB.EndOfFile()) {
       if (_inFileB.SamplingFrequency() == 16000) {
         // Switch side B to send super-wideband.
         _inFileB.Close();
         _inFileB.Open(file_name_swb_, 32000, "rb");
         _acmB->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
             MakeConfig(_paramISAC32kHz), _paramISAC32kHz.pltype));
       } else {
         // Switch side B to send wideband.
         _inFileB.Close();
         _inFileB.Open(file_name_swb_, 32000, "rb");
         _acmB->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
             MakeConfig(_paramISAC16kHz), _paramISAC16kHz.pltype));
       }
       numSendCodecChanged++;
     }
   }
   _outFileA.Close();
   _outFileB.Close();
   _inFileA.Close();
   _inFileB.Close();
 }

 }  // namespace webrtc
	/*
	* Copyright (c) 2012 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 "modules/audio_coding/test/iSACTest.h"

	#include <ctype.h>
	#include <stdio.h>
	#include <string.h>

	#ifdef _WIN32
	#include <windows.h>
	#elif defined(WEBRTC_LINUX)
	#include <time.h>
	#else
	#include <sys/time.h>
	#include <time.h>
	#endif

	#include "absl/strings/match.h"
	#include "api/audio_codecs/builtin_audio_decoder_factory.h"
	#include "api/audio_codecs/isac/audio_encoder_isac_float.h"
	#include "modules/audio_coding/codecs/audio_format_conversion.h"
	#include "modules/audio_coding/test/utility.h"
	#include "rtc_base/strings/string_builder.h"
	#include "rtc_base/timeutils.h"
	#include "system_wrappers/include/sleep.h"
	#include "test/gmock.h"
	#include "test/gtest.h"
	#include "test/testsupport/fileutils.h"

	namespace webrtc {

	using ::testing::AnyOf;
	using ::testing::Eq;
	using ::testing::StrCaseEq;

	namespace {

	AudioEncoderIsacFloat::Config MakeConfig(const CodecInst& ci) {
	EXPECT_THAT(ci.plname, StrCaseEq("ISAC"));
	EXPECT_THAT(ci.plfreq, AnyOf(Eq(16000), Eq(32000)));
	EXPECT_THAT(ci.channels, Eq(1u));
	AudioEncoderIsacFloat::Config config;
	config.sample_rate_hz = ci.plfreq;
	EXPECT_THAT(config.IsOk(), Eq(true));
	return config;
	}

	AudioEncoderIsacFloat::Config TweakConfig(
	AudioEncoderIsacFloat::Config config,
	const ACMTestISACConfig& test_config) {
	if (test_config.currentRateBitPerSec > 0) {
	config.bit_rate = test_config.currentRateBitPerSec;
	}
	if (test_config.currentFrameSizeMsec != 0) {
	config.frame_size_ms = test_config.currentFrameSizeMsec;
	}
	EXPECT_THAT(config.IsOk(), Eq(true));
	return config;
	}

	void SetISACConfigDefault(ACMTestISACConfig& isacConfig) {
	isacConfig.currentRateBitPerSec = 0;
	isacConfig.currentFrameSizeMsec = 0;
	isacConfig.encodingMode = -1;
	isacConfig.initRateBitPerSec = 0;
	isacConfig.initFrameSizeInMsec = 0;
	isacConfig.enforceFrameSize = false;
	}

	} // namespace

	ISACTest::ISACTest(int testMode)
	: _acmA(AudioCodingModule::Create(
	AudioCodingModule::Config(CreateBuiltinAudioDecoderFactory()))),
	_acmB(AudioCodingModule::Create(
	AudioCodingModule::Config(CreateBuiltinAudioDecoderFactory()))),
	_testMode(testMode) {}

	ISACTest::~ISACTest() {}

	void ISACTest::Setup() {
	int codecCntr;
	CodecInst codecParam;

	for (codecCntr = 0; codecCntr < AudioCodingModule::NumberOfCodecs();
	codecCntr++) {
	EXPECT_EQ(0, AudioCodingModule::Codec(codecCntr, &codecParam));
	if (absl::EqualsIgnoreCase(codecParam.plname, "ISAC") &&
	codecParam.plfreq == 16000) {
	memcpy(&_paramISAC16kHz, &codecParam, sizeof(CodecInst));
	_idISAC16kHz = codecCntr;
	}
	if (absl::EqualsIgnoreCase(codecParam.plname, "ISAC") &&
	codecParam.plfreq == 32000) {
	memcpy(&_paramISAC32kHz, &codecParam, sizeof(CodecInst));
	_idISAC32kHz = codecCntr;
	}
	}

	// Register both iSAC-wb & iSAC-swb in both sides as receiver codecs.
	EXPECT_EQ(true, _acmA->RegisterReceiveCodec(_paramISAC16kHz.pltype,
	CodecInstToSdp(_paramISAC16kHz)));
	EXPECT_EQ(true, _acmA->RegisterReceiveCodec(_paramISAC32kHz.pltype,
	CodecInstToSdp(_paramISAC32kHz)));
	EXPECT_EQ(true, _acmB->RegisterReceiveCodec(_paramISAC16kHz.pltype,
	CodecInstToSdp(_paramISAC16kHz)));
	EXPECT_EQ(true, _acmB->RegisterReceiveCodec(_paramISAC32kHz.pltype,
	CodecInstToSdp(_paramISAC32kHz)));

	//--- Set A-to-B channel
	_channel_A2B.reset(new Channel);
	EXPECT_EQ(0, _acmA->RegisterTransportCallback(_channel_A2B.get()));
	_channel_A2B->RegisterReceiverACM(_acmB.get());

	//--- Set B-to-A channel
	_channel_B2A.reset(new Channel);
	EXPECT_EQ(0, _acmB->RegisterTransportCallback(_channel_B2A.get()));
	_channel_B2A->RegisterReceiverACM(_acmA.get());

	file_name_swb_ =
	webrtc::test::ResourcePath("audio_coding/testfile32kHz", "pcm");

	_acmB->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
	MakeConfig(_paramISAC16kHz), _paramISAC16kHz.pltype));
	_acmA->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
	MakeConfig(_paramISAC32kHz), _paramISAC32kHz.pltype));

	_inFileA.Open(file_name_swb_, 32000, "rb");
	// Set test length to 500 ms (50 blocks of 10 ms each).
	_inFileA.SetNum10MsBlocksToRead(50);
	// Fast-forward 1 second (100 blocks) since the files start with silence.
	_inFileA.FastForward(100);
	std::string fileNameA = webrtc::test::OutputPath() + "testisac_a.pcm";
	std::string fileNameB = webrtc::test::OutputPath() + "testisac_b.pcm";
	_outFileA.Open(fileNameA, 32000, "wb");
	_outFileB.Open(fileNameB, 32000, "wb");

	while (!_inFileA.EndOfFile()) {
	Run10ms();
	}
	CodecInst receiveCodec;
	EXPECT_EQ(0, _acmA->ReceiveCodec(&receiveCodec));
	EXPECT_EQ(0, _acmB->ReceiveCodec(&receiveCodec));

	_inFileA.Close();
	_outFileA.Close();
	_outFileB.Close();
	}

	void ISACTest::Perform() {
	Setup();

	int16_t testNr = 0;
	ACMTestISACConfig wbISACConfig;
	ACMTestISACConfig swbISACConfig;

	SetISACConfigDefault(wbISACConfig);
	SetISACConfigDefault(swbISACConfig);

	wbISACConfig.currentRateBitPerSec = -1;
	swbISACConfig.currentRateBitPerSec = -1;
	testNr++;
	EncodeDecode(testNr, wbISACConfig, swbISACConfig);

	if (_testMode != 0) {
	SetISACConfigDefault(wbISACConfig);
	SetISACConfigDefault(swbISACConfig);

	wbISACConfig.currentRateBitPerSec = -1;
	swbISACConfig.currentRateBitPerSec = -1;
	wbISACConfig.initRateBitPerSec = 13000;
	wbISACConfig.initFrameSizeInMsec = 60;
	swbISACConfig.initRateBitPerSec = 20000;
	swbISACConfig.initFrameSizeInMsec = 30;
	testNr++;
	EncodeDecode(testNr, wbISACConfig, swbISACConfig);

	SetISACConfigDefault(wbISACConfig);
	SetISACConfigDefault(swbISACConfig);

	wbISACConfig.currentRateBitPerSec = 20000;
	swbISACConfig.currentRateBitPerSec = 48000;
	testNr++;
	EncodeDecode(testNr, wbISACConfig, swbISACConfig);

	wbISACConfig.currentRateBitPerSec = 16000;
	swbISACConfig.currentRateBitPerSec = 30000;
	wbISACConfig.currentFrameSizeMsec = 60;
	testNr++;
	EncodeDecode(testNr, wbISACConfig, swbISACConfig);
	}

	SetISACConfigDefault(wbISACConfig);
	SetISACConfigDefault(swbISACConfig);
	testNr++;
	EncodeDecode(testNr, wbISACConfig, swbISACConfig);

	testNr++;
	if (_testMode == 0) {
	SwitchingSamplingRate(testNr, 4);
	} else {
	SwitchingSamplingRate(testNr, 80);
	}
	}

	void ISACTest::Run10ms() {
	AudioFrame audioFrame;
	EXPECT_GT(_inFileA.Read10MsData(audioFrame), 0);
	EXPECT_GE(_acmA->Add10MsData(audioFrame), 0);
	EXPECT_GE(_acmB->Add10MsData(audioFrame), 0);
	bool muted;
	EXPECT_EQ(0, _acmA->PlayoutData10Ms(32000, &audioFrame, &muted));
	ASSERT_FALSE(muted);
	_outFileA.Write10MsData(audioFrame);
	EXPECT_EQ(0, _acmB->PlayoutData10Ms(32000, &audioFrame, &muted));
	ASSERT_FALSE(muted);
	_outFileB.Write10MsData(audioFrame);
	}

	void ISACTest::EncodeDecode(int testNr,
	ACMTestISACConfig& wbISACConfig,
	ACMTestISACConfig& swbISACConfig) {
	// Files in Side A and B
	_inFileA.Open(file_name_swb_, 32000, "rb", true);
	_inFileB.Open(file_name_swb_, 32000, "rb", true);

	std::string file_name_out;
	rtc::StringBuilder file_stream_a;
	rtc::StringBuilder file_stream_b;
	file_stream_a << webrtc::test::OutputPath();
	file_stream_b << webrtc::test::OutputPath();
	file_stream_a << "out_iSACTest_A_" << testNr << ".pcm";
	file_stream_b << "out_iSACTest_B_" << testNr << ".pcm";
	file_name_out = file_stream_a.str();
	_outFileA.Open(file_name_out, 32000, "wb");
	file_name_out = file_stream_b.str();
	_outFileB.Open(file_name_out, 32000, "wb");

	// Side A is sending super-wideband, and side B is sending wideband.
	_acmA->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
	TweakConfig(MakeConfig(_paramISAC32kHz), swbISACConfig),
	_paramISAC32kHz.pltype));
	_acmB->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
	TweakConfig(MakeConfig(_paramISAC16kHz), wbISACConfig),
	_paramISAC16kHz.pltype));

	bool adaptiveMode = false;
	if ((swbISACConfig.currentRateBitPerSec == -1) \|\|
	(wbISACConfig.currentRateBitPerSec == -1)) {
	adaptiveMode = true;
	}
	_myTimer.Reset();
	_channel_A2B->ResetStats();
	_channel_B2A->ResetStats();

	char currentTime[500];
	int64_t time_ms = rtc::TimeMillis();
	while (!(_inFileA.EndOfFile() \|\| _inFileA.Rewinded())) {
	Run10ms();
	_myTimer.Tick10ms();
	_myTimer.CurrentTimeHMS(currentTime);

	if ((adaptiveMode) && (_testMode != 0)) {
	time_ms += 10;
	int64_t time_left_ms = time_ms - rtc::TimeMillis();
	if (time_left_ms > 0) {
	SleepMs(time_left_ms);
	}

	EXPECT_TRUE(_acmA->SendCodec());
	EXPECT_TRUE(_acmB->SendCodec());
	}
	}

	if (_testMode != 0) {
	printf("\n\nSide A statistics\n\n");
	_channel_A2B->PrintStats(_paramISAC32kHz);

	printf("\n\nSide B statistics\n\n");
	_channel_B2A->PrintStats(_paramISAC16kHz);
	}

	_channel_A2B->ResetStats();
	_channel_B2A->ResetStats();

	_outFileA.Close();
	_outFileB.Close();
	_inFileA.Close();
	_inFileB.Close();
	}

	void ISACTest::SwitchingSamplingRate(int testNr, int maxSampRateChange) {
	// Files in Side A
	_inFileA.Open(file_name_swb_, 32000, "rb");
	_inFileB.Open(file_name_swb_, 32000, "rb");

	std::string file_name_out;
	rtc::StringBuilder file_stream_a;
	rtc::StringBuilder file_stream_b;
	file_stream_a << webrtc::test::OutputPath();
	file_stream_b << webrtc::test::OutputPath();
	file_stream_a << "out_iSACTest_A_" << testNr << ".pcm";
	file_stream_b << "out_iSACTest_B_" << testNr << ".pcm";
	file_name_out = file_stream_a.str();
	_outFileA.Open(file_name_out, 32000, "wb");
	file_name_out = file_stream_b.str();
	_outFileB.Open(file_name_out, 32000, "wb");

	// Start with side A sending super-wideband and side B seding wideband.
	// Toggle sending wideband/super-wideband in this test.
	_acmA->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
	MakeConfig(_paramISAC32kHz), _paramISAC32kHz.pltype));
	_acmB->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
	MakeConfig(_paramISAC16kHz), _paramISAC16kHz.pltype));

	int numSendCodecChanged = 0;
	_myTimer.Reset();
	char currentTime[50];
	while (numSendCodecChanged < (maxSampRateChange << 1)) {
	Run10ms();
	_myTimer.Tick10ms();
	_myTimer.CurrentTimeHMS(currentTime);
	if (_testMode == 2)
	printf("\r%s", currentTime);
	if (_inFileA.EndOfFile()) {
	if (_inFileA.SamplingFrequency() == 16000) {
	// Switch side A to send super-wideband.
	_inFileA.Close();
	_inFileA.Open(file_name_swb_, 32000, "rb");
	_acmA->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
	MakeConfig(_paramISAC32kHz), _paramISAC32kHz.pltype));
	} else {
	// Switch side A to send wideband.
	_inFileA.Close();
	_inFileA.Open(file_name_swb_, 32000, "rb");
	_acmA->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
	MakeConfig(_paramISAC16kHz), _paramISAC16kHz.pltype));
	}
	numSendCodecChanged++;
	}

	if (_inFileB.EndOfFile()) {
	if (_inFileB.SamplingFrequency() == 16000) {
	// Switch side B to send super-wideband.
	_inFileB.Close();
	_inFileB.Open(file_name_swb_, 32000, "rb");
	_acmB->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
	MakeConfig(_paramISAC32kHz), _paramISAC32kHz.pltype));
	} else {
	// Switch side B to send wideband.
	_inFileB.Close();
	_inFileB.Open(file_name_swb_, 32000, "rb");
	_acmB->SetEncoder(AudioEncoderIsacFloat::MakeAudioEncoder(
	MakeConfig(_paramISAC16kHz), _paramISAC16kHz.pltype));
	}
	numSendCodecChanged++;
	}
	}
	_outFileA.Close();
	_outFileB.Close();
	_inFileA.Close();
	_inFileB.Close();
	}

	} // namespace webrtc