modules/audio_coding/test/TestRedFec.cc - src/webrtc - 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 "webrtc/modules/audio_coding/test/TestRedFec.h"

 #include <assert.h>

 #include "webrtc/common_types.h"
 #include "webrtc/modules/audio_coding/codecs/audio_format_conversion.h"
 #include "webrtc/modules/audio_coding/include/audio_coding_module_typedefs.h"
 #include "webrtc/modules/audio_coding/test/utility.h"
 #include "webrtc/test/testsupport/fileutils.h"
 #include "webrtc/typedefs.h"

 #ifdef SUPPORT_RED_WB
 #undef SUPPORT_RED_WB
 #endif

 #ifdef SUPPORT_RED_SWB
 #undef SUPPORT_RED_SWB
 #endif

 #ifdef SUPPORT_RED_FB
 #undef SUPPORT_RED_FB
 #endif

 namespace webrtc {

 namespace {
   const char kNameL16[] = "L16";
   const char kNamePCMU[] = "PCMU";
   const char kNameCN[] = "CN";
   const char kNameRED[] = "RED";

   // These three are only used by code #ifdeffed on WEBRTC_CODEC_G722.
 #ifdef WEBRTC_CODEC_G722
   const char kNameISAC[] = "ISAC";
   const char kNameG722[] = "G722";
   const char kNameOPUS[] = "opus";
 #endif
 }

 TestRedFec::TestRedFec()
     : _acmA(AudioCodingModule::Create(0)),
       _acmB(AudioCodingModule::Create(1)),
       _channelA2B(NULL),
       _testCntr(0) {
 }

 TestRedFec::~TestRedFec() {
   if (_channelA2B != NULL) {
     delete _channelA2B;
     _channelA2B = NULL;
   }
 }

 void TestRedFec::Perform() {
   const std::string file_name = webrtc::test::ResourcePath(
       "audio_coding/testfile32kHz", "pcm");
   _inFileA.Open(file_name, 32000, "rb");

   ASSERT_EQ(0, _acmA->InitializeReceiver());
   ASSERT_EQ(0, _acmB->InitializeReceiver());

   uint8_t numEncoders = _acmA->NumberOfCodecs();
   CodecInst myCodecParam;
   for (uint8_t n = 0; n < numEncoders; n++) {
     EXPECT_EQ(0, _acmB->Codec(n, &myCodecParam));
     // Default number of channels is 2 for opus, so we change to 1 in this test.
     if (!strcmp(myCodecParam.plname, "opus")) {
       myCodecParam.channels = 1;
     }
     EXPECT_EQ(true, _acmB->RegisterReceiveCodec(myCodecParam.pltype,
                                                 CodecInstToSdp(myCodecParam)));
   }

   // Create and connect the channel
   _channelA2B = new Channel;
   _acmA->RegisterTransportCallback(_channelA2B);
   _channelA2B->RegisterReceiverACM(_acmB.get());

   EXPECT_EQ(0, RegisterSendCodec('A', kNameL16, 8000));
   EXPECT_EQ(0, RegisterSendCodec('A', kNameCN, 8000));
   EXPECT_EQ(0, RegisterSendCodec('A', kNameRED));
   EXPECT_EQ(0, SetVAD(true, true, VADAggr));
   EXPECT_EQ(0, _acmA->SetREDStatus(true));
   EXPECT_TRUE(_acmA->REDStatus());

   OpenOutFile(_testCntr);
   Run();
   _outFileB.Close();

   RegisterSendCodec('A', kNamePCMU, 8000);
   // Switch to another 8 kHz codec, RED should remain switched on.
   EXPECT_TRUE(_acmA->REDStatus());
   OpenOutFile(_testCntr);
   Run();
   _outFileB.Close();

 #ifndef WEBRTC_CODEC_G722
   EXPECT_TRUE(false);
   printf("G722 needs to be activated to run this test\n");
   return;
 #else
   EXPECT_EQ(0, RegisterSendCodec('A', kNameG722, 16000));
   EXPECT_EQ(0, RegisterSendCodec('A', kNameCN, 16000));

 #ifdef SUPPORT_RED_WB
   // Switch codec, RED should remain.
   EXPECT_TRUE(_acmA->REDStatus());
 #else
   // Switch to a 16 kHz codec, RED should have been switched off.
   EXPECT_FALSE(_acmA->REDStatus());
 #endif

   OpenOutFile(_testCntr);
   EXPECT_EQ(0, SetVAD(true, true, VADAggr));
   EXPECT_EQ(0, _acmA->SetREDStatus(false));
   EXPECT_FALSE(_acmA->REDStatus());
   Run();
 #ifdef SUPPORT_RED_WB
   EXPECT_EQ(0, _acmA->SetREDStatus(true));
   EXPECT_TRUE(_acmA->REDStatus());
 #else
   EXPECT_EQ(-1, _acmA->SetREDStatus(true));
   EXPECT_FALSE(_acmA->REDStatus());
 #endif
   Run();
   _outFileB.Close();

   RegisterSendCodec('A', kNameISAC, 16000);

 #ifdef SUPPORT_RED_WB
   // Switch codec, RED should remain.
   EXPECT_TRUE(_acmA->REDStatus());
 #else
   EXPECT_FALSE(_acmA->REDStatus());
 #endif

   OpenOutFile(_testCntr);
   EXPECT_EQ(0, SetVAD(true, true, VADVeryAggr));
   EXPECT_EQ(0, _acmA->SetREDStatus(false));
   EXPECT_FALSE(_acmA->REDStatus());
   Run();
   _outFileB.Close();

 #ifdef SUPPORT_RED_WB
   EXPECT_EQ(0, _acmA->SetREDStatus(true));
   EXPECT_TRUE(_acmA->REDStatus());
 #else
   EXPECT_EQ(-1, _acmA->SetREDStatus(true));
   EXPECT_FALSE(_acmA->REDStatus());
 #endif
   OpenOutFile(_testCntr);
   Run();
   _outFileB.Close();

   RegisterSendCodec('A', kNameISAC, 32000);

 #if defined(SUPPORT_RED_SWB) && defined(SUPPORT_RED_WB)
   // Switch codec, RED should remain.
   EXPECT_TRUE(_acmA->REDStatus());
 #else
   // Switch to a 32 kHz codec, RED should have been switched off.
   EXPECT_FALSE(_acmA->REDStatus());
 #endif

   OpenOutFile(_testCntr);
   EXPECT_EQ(0, SetVAD(true, true, VADVeryAggr));
   EXPECT_EQ(0, _acmA->SetREDStatus(false));
   EXPECT_FALSE(_acmA->REDStatus());
   Run();
   _outFileB.Close();

 #ifdef SUPPORT_RED_SWB
   EXPECT_EQ(0, _acmA->SetREDStatus(true));
   EXPECT_TRUE(_acmA->REDStatus());
 #else
   EXPECT_EQ(-1, _acmA->SetREDStatus(true));
   EXPECT_FALSE(_acmA->REDStatus());
 #endif
   OpenOutFile(_testCntr);
   Run();
   _outFileB.Close();

   RegisterSendCodec('A', kNameISAC, 32000);
   EXPECT_EQ(0, SetVAD(false, false, VADNormal));

 #if defined(SUPPORT_RED_SWB) && defined(SUPPORT_RED_WB)
   OpenOutFile(_testCntr);
   EXPECT_EQ(0, _acmA->SetREDStatus(true));
   EXPECT_TRUE(_acmA->REDStatus());
   Run();

   RegisterSendCodec('A', kNameISAC, 16000);
   EXPECT_TRUE(_acmA->REDStatus());
   Run();

   RegisterSendCodec('A', kNameISAC, 32000);
   EXPECT_TRUE(_acmA->REDStatus());
   Run();

   RegisterSendCodec('A', kNameISAC, 16000);
   EXPECT_TRUE(_acmA->REDStatus());
   Run();
   _outFileB.Close();
 #else
   EXPECT_EQ(-1, _acmA->SetREDStatus(true));
   EXPECT_FALSE(_acmA->REDStatus());
 #endif

   _channelA2B->SetFECTestWithPacketLoss(true);
   // Following tests are under packet losses.

   EXPECT_EQ(0, RegisterSendCodec('A', kNameG722));
   EXPECT_EQ(0, RegisterSendCodec('A', kNameCN, 16000));

 #if defined(SUPPORT_RED_WB) && defined(SUPPORT_RED_SWB)
   // Switch codec, RED should remain.
   EXPECT_TRUE(_acmA->REDStatus());
 #else
   // Switch to a 16 kHz codec, RED should have been switched off.
   EXPECT_FALSE(_acmA->REDStatus());
 #endif

   OpenOutFile(_testCntr);
   EXPECT_EQ(0, SetVAD(true, true, VADAggr));
   EXPECT_EQ(0, _acmA->SetREDStatus(false));
   EXPECT_FALSE(_acmA->REDStatus());
   Run();
   _outFileB.Close();

 #ifdef SUPPORT_RED_WB
   EXPECT_EQ(0, _acmA->SetREDStatus(true));
   EXPECT_TRUE(_acmA->REDStatus());
 #else
   EXPECT_EQ(-1, _acmA->SetREDStatus(true));
   EXPECT_FALSE(_acmA->REDStatus());
 #endif
   OpenOutFile(_testCntr);
   Run();
   _outFileB.Close();

   RegisterSendCodec('A', kNameISAC, 16000);

 #ifdef SUPPORT_RED_WB
   // Switch codec, RED should remain.
   EXPECT_TRUE(_acmA->REDStatus());
 #else
   // Switch to a 16 kHz codec, RED should have been switched off.
   EXPECT_FALSE(_acmA->REDStatus());
 #endif

   OpenOutFile(_testCntr);
   EXPECT_EQ(0, SetVAD(true, true, VADVeryAggr));
   EXPECT_EQ(0, _acmA->SetREDStatus(false));
   EXPECT_FALSE(_acmA->REDStatus());
   Run();
   _outFileB.Close();
 #ifdef SUPPORT_RED_WB
   EXPECT_EQ(0, _acmA->SetREDStatus(true));
   EXPECT_TRUE(_acmA->REDStatus());
 #else
   EXPECT_EQ(-1, _acmA->SetREDStatus(true));
   EXPECT_FALSE(_acmA->REDStatus());
 #endif
   OpenOutFile(_testCntr);
   Run();
   _outFileB.Close();

   RegisterSendCodec('A', kNameISAC, 32000);

 #if defined(SUPPORT_RED_SWB) && defined(SUPPORT_RED_WB)
   // Switch codec, RED should remain.
   EXPECT_TRUE(_acmA->REDStatus());
 #else
   // Switch to a 32 kHz codec, RED should have been switched off.
   EXPECT_FALSE(_acmA->REDStatus());
 #endif

   OpenOutFile(_testCntr);
   EXPECT_EQ(0, SetVAD(true, true, VADVeryAggr));
   EXPECT_EQ(0, _acmA->SetREDStatus(false));
   EXPECT_FALSE(_acmA->REDStatus());
 #ifdef SUPPORT_RED_SWB
   EXPECT_EQ(0, _acmA->SetREDStatus(true));
   EXPECT_TRUE(_acmA->REDStatus());
 #else
   EXPECT_EQ(-1, _acmA->SetREDStatus(true));
   EXPECT_FALSE(_acmA->REDStatus());
 #endif
   OpenOutFile(_testCntr);
   Run();
   _outFileB.Close();

   RegisterSendCodec('A', kNameISAC, 32000);
   EXPECT_EQ(0, SetVAD(false, false, VADNormal));
 #if defined(SUPPORT_RED_SWB) && defined(SUPPORT_RED_WB)
   OpenOutFile(_testCntr);
   EXPECT_EQ(0, _acmA->SetREDStatus(true));
   EXPECT_TRUE(_acmA->REDStatus());
   Run();

   RegisterSendCodec('A', kNameISAC, 16000);
   EXPECT_TRUE(_acmA->REDStatus());
   Run();

   RegisterSendCodec('A', kNameISAC, 32000);
   EXPECT_TRUE(_acmA->REDStatus());
   Run();

   RegisterSendCodec('A', kNameISAC, 16000);
   EXPECT_TRUE(_acmA->REDStatus());
   Run();
   _outFileB.Close();
 #else
   EXPECT_EQ(-1, _acmA->SetREDStatus(true));
   EXPECT_FALSE(_acmA->REDStatus());
 #endif

 #ifndef WEBRTC_CODEC_OPUS
   EXPECT_TRUE(false);
   printf("Opus needs to be activated to run this test\n");
   return;
 #endif

   RegisterSendCodec('A', kNameOPUS, 48000);

 #if defined(SUPPORT_RED_FB) && defined(SUPPORT_RED_SWB) &&\
   defined(SUPPORT_RED_WB)
   // Switch to codec, RED should remain switched on.
   EXPECT_TRUE(_acmA->REDStatus());
 #else
   EXPECT_FALSE(_acmA->REDStatus());
 #endif

   // _channelA2B imposes 25% packet loss rate.
   EXPECT_EQ(0, _acmA->SetPacketLossRate(25));

 #ifdef SUPPORT_RED_FB
   EXPECT_EQ(0, _acmA->SetREDStatus(true));
   EXPECT_TRUE(_acmA->REDStatus());
   // Codec FEC and RED are mutually exclusive.
   EXPECT_EQ(-1, _acmA->SetCodecFEC(true));

   EXPECT_EQ(0, _acmA->SetREDStatus(false));
   EXPECT_EQ(0, _acmA->SetCodecFEC(true));

   // Codec FEC and RED are mutually exclusive.
   EXPECT_EQ(-1, _acmA->SetREDStatus(true));
 #else
   EXPECT_EQ(-1, _acmA->SetREDStatus(true));
   EXPECT_FALSE(_acmA->REDStatus());
   EXPECT_EQ(0, _acmA->SetCodecFEC(true));
 #endif

   EXPECT_TRUE(_acmA->CodecFEC());
   OpenOutFile(_testCntr);
   Run();

   // Switch to L16 with RED.
   RegisterSendCodec('A', kNameL16, 8000);
   EXPECT_EQ(0, SetVAD(false, false, VADNormal));

   // L16 does not support FEC, so FEC should be turned off automatically.
   EXPECT_FALSE(_acmA->CodecFEC());

   EXPECT_EQ(0, _acmA->SetREDStatus(true));
   EXPECT_TRUE(_acmA->REDStatus());
   Run();

   // Switch to Opus again.
   RegisterSendCodec('A', kNameOPUS, 48000);
 #ifdef SUPPORT_RED_FB
   // Switch to codec, RED should remain switched on.
   EXPECT_TRUE(_acmA->REDStatus());
 #else
   EXPECT_FALSE(_acmA->REDStatus());
 #endif
   EXPECT_EQ(0, _acmA->SetREDStatus(false));
   EXPECT_EQ(0, _acmA->SetCodecFEC(false));
   Run();

   EXPECT_EQ(0, _acmA->SetCodecFEC(true));
   _outFileB.Close();

   // Codecs does not support internal FEC, cannot enable FEC.
   RegisterSendCodec('A', kNameG722, 16000);
   EXPECT_FALSE(_acmA->REDStatus());
   EXPECT_EQ(-1, _acmA->SetCodecFEC(true));
   EXPECT_FALSE(_acmA->CodecFEC());

   RegisterSendCodec('A', kNameISAC, 16000);
   EXPECT_FALSE(_acmA->REDStatus());
   EXPECT_EQ(-1, _acmA->SetCodecFEC(true));
   EXPECT_FALSE(_acmA->CodecFEC());

   // Codecs does not support internal FEC, disable FEC does not trigger failure.
   RegisterSendCodec('A', kNameG722, 16000);
   EXPECT_FALSE(_acmA->REDStatus());
   EXPECT_EQ(0, _acmA->SetCodecFEC(false));
   EXPECT_FALSE(_acmA->CodecFEC());

   RegisterSendCodec('A', kNameISAC, 16000);
   EXPECT_FALSE(_acmA->REDStatus());
   EXPECT_EQ(0, _acmA->SetCodecFEC(false));
   EXPECT_FALSE(_acmA->CodecFEC());

 #endif  // defined(WEBRTC_CODEC_G722)
 }

 int32_t TestRedFec::SetVAD(bool enableDTX, bool enableVAD, ACMVADMode vadMode) {
   return _acmA->SetVAD(enableDTX, enableVAD, vadMode);
 }

 int16_t TestRedFec::RegisterSendCodec(char side, const char* codecName,
                                       int32_t samplingFreqHz) {
   std::cout << std::flush;
   AudioCodingModule* myACM;
   switch (side) {
     case 'A': {
       myACM = _acmA.get();
       break;
     }
     case 'B': {
       myACM = _acmB.get();
       break;
     }
     default:
       return -1;
   }

   if (myACM == NULL) {
     assert(false);
     return -1;
   }
   CodecInst myCodecParam;
   EXPECT_GT(AudioCodingModule::Codec(codecName, &myCodecParam,
                                      samplingFreqHz, 1), -1);
   EXPECT_GT(myACM->RegisterSendCodec(myCodecParam), -1);

   // Initialization was successful.
   return 0;
 }

 void TestRedFec::Run() {
   AudioFrame audioFrame;
   int32_t outFreqHzB = _outFileB.SamplingFrequency();
   // Set test length to 500 ms (50 blocks of 10 ms each).
   _inFileA.SetNum10MsBlocksToRead(50);
   // Fast-forward 1 second (100 blocks) since the file starts with silence.
   _inFileA.FastForward(100);

   while (!_inFileA.EndOfFile()) {
     EXPECT_GT(_inFileA.Read10MsData(audioFrame), 0);
     EXPECT_GE(_acmA->Add10MsData(audioFrame), 0);
     bool muted;
     EXPECT_EQ(0, _acmB->PlayoutData10Ms(outFreqHzB, &audioFrame, &muted));
     ASSERT_FALSE(muted);
     _outFileB.Write10MsData(audioFrame.data(), audioFrame.samples_per_channel_);
   }
   _inFileA.Rewind();
 }

 void TestRedFec::OpenOutFile(int16_t test_number) {
   std::string file_name;
   std::stringstream file_stream;
   file_stream << webrtc::test::OutputPath();
   file_stream << "TestRedFec_outFile_";
   file_stream << test_number << ".pcm";
   file_name = file_stream.str();
   _outFileB.Open(file_name, 16000, "wb");
 }

 }  // 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 "webrtc/modules/audio_coding/test/TestRedFec.h"

	#include <assert.h>

	#include "webrtc/common_types.h"
	#include "webrtc/modules/audio_coding/codecs/audio_format_conversion.h"
	#include "webrtc/modules/audio_coding/include/audio_coding_module_typedefs.h"
	#include "webrtc/modules/audio_coding/test/utility.h"
	#include "webrtc/test/testsupport/fileutils.h"
	#include "webrtc/typedefs.h"

	#ifdef SUPPORT_RED_WB
	#undef SUPPORT_RED_WB
	#endif

	#ifdef SUPPORT_RED_SWB
	#undef SUPPORT_RED_SWB
	#endif

	#ifdef SUPPORT_RED_FB
	#undef SUPPORT_RED_FB
	#endif

	namespace webrtc {

	namespace {
	const char kNameL16[] = "L16";
	const char kNamePCMU[] = "PCMU";
	const char kNameCN[] = "CN";
	const char kNameRED[] = "RED";

	// These three are only used by code #ifdeffed on WEBRTC_CODEC_G722.
	#ifdef WEBRTC_CODEC_G722
	const char kNameISAC[] = "ISAC";
	const char kNameG722[] = "G722";
	const char kNameOPUS[] = "opus";
	#endif
	}

	TestRedFec::TestRedFec()
	: _acmA(AudioCodingModule::Create(0)),
	_acmB(AudioCodingModule::Create(1)),
	_channelA2B(NULL),
	_testCntr(0) {
	}

	TestRedFec::~TestRedFec() {
	if (_channelA2B != NULL) {
	delete _channelA2B;
	_channelA2B = NULL;
	}
	}

	void TestRedFec::Perform() {
	const std::string file_name = webrtc::test::ResourcePath(
	"audio_coding/testfile32kHz", "pcm");
	_inFileA.Open(file_name, 32000, "rb");

	ASSERT_EQ(0, _acmA->InitializeReceiver());
	ASSERT_EQ(0, _acmB->InitializeReceiver());

	uint8_t numEncoders = _acmA->NumberOfCodecs();
	CodecInst myCodecParam;
	for (uint8_t n = 0; n < numEncoders; n++) {
	EXPECT_EQ(0, _acmB->Codec(n, &myCodecParam));
	// Default number of channels is 2 for opus, so we change to 1 in this test.
	if (!strcmp(myCodecParam.plname, "opus")) {
	myCodecParam.channels = 1;
	}
	EXPECT_EQ(true, _acmB->RegisterReceiveCodec(myCodecParam.pltype,
	CodecInstToSdp(myCodecParam)));
	}

	// Create and connect the channel
	_channelA2B = new Channel;
	_acmA->RegisterTransportCallback(_channelA2B);
	_channelA2B->RegisterReceiverACM(_acmB.get());

	EXPECT_EQ(0, RegisterSendCodec('A', kNameL16, 8000));
	EXPECT_EQ(0, RegisterSendCodec('A', kNameCN, 8000));
	EXPECT_EQ(0, RegisterSendCodec('A', kNameRED));
	EXPECT_EQ(0, SetVAD(true, true, VADAggr));
	EXPECT_EQ(0, _acmA->SetREDStatus(true));
	EXPECT_TRUE(_acmA->REDStatus());

	OpenOutFile(_testCntr);
	Run();
	_outFileB.Close();

	RegisterSendCodec('A', kNamePCMU, 8000);
	// Switch to another 8 kHz codec, RED should remain switched on.
	EXPECT_TRUE(_acmA->REDStatus());
	OpenOutFile(_testCntr);
	Run();
	_outFileB.Close();

	#ifndef WEBRTC_CODEC_G722
	EXPECT_TRUE(false);
	printf("G722 needs to be activated to run this test\n");
	return;
	#else
	EXPECT_EQ(0, RegisterSendCodec('A', kNameG722, 16000));
	EXPECT_EQ(0, RegisterSendCodec('A', kNameCN, 16000));

	#ifdef SUPPORT_RED_WB
	// Switch codec, RED should remain.
	EXPECT_TRUE(_acmA->REDStatus());
	#else
	// Switch to a 16 kHz codec, RED should have been switched off.
	EXPECT_FALSE(_acmA->REDStatus());
	#endif

	OpenOutFile(_testCntr);
	EXPECT_EQ(0, SetVAD(true, true, VADAggr));
	EXPECT_EQ(0, _acmA->SetREDStatus(false));
	EXPECT_FALSE(_acmA->REDStatus());
	Run();
	#ifdef SUPPORT_RED_WB
	EXPECT_EQ(0, _acmA->SetREDStatus(true));
	EXPECT_TRUE(_acmA->REDStatus());
	#else
	EXPECT_EQ(-1, _acmA->SetREDStatus(true));
	EXPECT_FALSE(_acmA->REDStatus());
	#endif
	Run();
	_outFileB.Close();

	RegisterSendCodec('A', kNameISAC, 16000);

	#ifdef SUPPORT_RED_WB
	// Switch codec, RED should remain.
	EXPECT_TRUE(_acmA->REDStatus());
	#else
	EXPECT_FALSE(_acmA->REDStatus());
	#endif

	OpenOutFile(_testCntr);
	EXPECT_EQ(0, SetVAD(true, true, VADVeryAggr));
	EXPECT_EQ(0, _acmA->SetREDStatus(false));
	EXPECT_FALSE(_acmA->REDStatus());
	Run();
	_outFileB.Close();

	#ifdef SUPPORT_RED_WB
	EXPECT_EQ(0, _acmA->SetREDStatus(true));
	EXPECT_TRUE(_acmA->REDStatus());
	#else
	EXPECT_EQ(-1, _acmA->SetREDStatus(true));
	EXPECT_FALSE(_acmA->REDStatus());
	#endif
	OpenOutFile(_testCntr);
	Run();
	_outFileB.Close();

	RegisterSendCodec('A', kNameISAC, 32000);

	#if defined(SUPPORT_RED_SWB) && defined(SUPPORT_RED_WB)
	// Switch codec, RED should remain.
	EXPECT_TRUE(_acmA->REDStatus());
	#else
	// Switch to a 32 kHz codec, RED should have been switched off.
	EXPECT_FALSE(_acmA->REDStatus());
	#endif

	OpenOutFile(_testCntr);
	EXPECT_EQ(0, SetVAD(true, true, VADVeryAggr));
	EXPECT_EQ(0, _acmA->SetREDStatus(false));
	EXPECT_FALSE(_acmA->REDStatus());
	Run();
	_outFileB.Close();

	#ifdef SUPPORT_RED_SWB
	EXPECT_EQ(0, _acmA->SetREDStatus(true));
	EXPECT_TRUE(_acmA->REDStatus());
	#else
	EXPECT_EQ(-1, _acmA->SetREDStatus(true));
	EXPECT_FALSE(_acmA->REDStatus());
	#endif
	OpenOutFile(_testCntr);
	Run();
	_outFileB.Close();

	RegisterSendCodec('A', kNameISAC, 32000);
	EXPECT_EQ(0, SetVAD(false, false, VADNormal));

	#if defined(SUPPORT_RED_SWB) && defined(SUPPORT_RED_WB)
	OpenOutFile(_testCntr);
	EXPECT_EQ(0, _acmA->SetREDStatus(true));
	EXPECT_TRUE(_acmA->REDStatus());
	Run();

	RegisterSendCodec('A', kNameISAC, 16000);
	EXPECT_TRUE(_acmA->REDStatus());
	Run();

	RegisterSendCodec('A', kNameISAC, 32000);
	EXPECT_TRUE(_acmA->REDStatus());
	Run();

	RegisterSendCodec('A', kNameISAC, 16000);
	EXPECT_TRUE(_acmA->REDStatus());
	Run();
	_outFileB.Close();
	#else
	EXPECT_EQ(-1, _acmA->SetREDStatus(true));
	EXPECT_FALSE(_acmA->REDStatus());
	#endif

	_channelA2B->SetFECTestWithPacketLoss(true);
	// Following tests are under packet losses.

	EXPECT_EQ(0, RegisterSendCodec('A', kNameG722));
	EXPECT_EQ(0, RegisterSendCodec('A', kNameCN, 16000));

	#if defined(SUPPORT_RED_WB) && defined(SUPPORT_RED_SWB)
	// Switch codec, RED should remain.
	EXPECT_TRUE(_acmA->REDStatus());
	#else
	// Switch to a 16 kHz codec, RED should have been switched off.
	EXPECT_FALSE(_acmA->REDStatus());
	#endif

	OpenOutFile(_testCntr);
	EXPECT_EQ(0, SetVAD(true, true, VADAggr));
	EXPECT_EQ(0, _acmA->SetREDStatus(false));
	EXPECT_FALSE(_acmA->REDStatus());
	Run();
	_outFileB.Close();

	#ifdef SUPPORT_RED_WB
	EXPECT_EQ(0, _acmA->SetREDStatus(true));
	EXPECT_TRUE(_acmA->REDStatus());
	#else
	EXPECT_EQ(-1, _acmA->SetREDStatus(true));
	EXPECT_FALSE(_acmA->REDStatus());
	#endif
	OpenOutFile(_testCntr);
	Run();
	_outFileB.Close();

	RegisterSendCodec('A', kNameISAC, 16000);

	#ifdef SUPPORT_RED_WB
	// Switch codec, RED should remain.
	EXPECT_TRUE(_acmA->REDStatus());
	#else
	// Switch to a 16 kHz codec, RED should have been switched off.
	EXPECT_FALSE(_acmA->REDStatus());
	#endif

	OpenOutFile(_testCntr);
	EXPECT_EQ(0, SetVAD(true, true, VADVeryAggr));
	EXPECT_EQ(0, _acmA->SetREDStatus(false));
	EXPECT_FALSE(_acmA->REDStatus());
	Run();
	_outFileB.Close();
	#ifdef SUPPORT_RED_WB
	EXPECT_EQ(0, _acmA->SetREDStatus(true));
	EXPECT_TRUE(_acmA->REDStatus());
	#else
	EXPECT_EQ(-1, _acmA->SetREDStatus(true));
	EXPECT_FALSE(_acmA->REDStatus());
	#endif
	OpenOutFile(_testCntr);
	Run();
	_outFileB.Close();

	RegisterSendCodec('A', kNameISAC, 32000);

	#if defined(SUPPORT_RED_SWB) && defined(SUPPORT_RED_WB)
	// Switch codec, RED should remain.
	EXPECT_TRUE(_acmA->REDStatus());
	#else
	// Switch to a 32 kHz codec, RED should have been switched off.
	EXPECT_FALSE(_acmA->REDStatus());
	#endif

	OpenOutFile(_testCntr);
	EXPECT_EQ(0, SetVAD(true, true, VADVeryAggr));
	EXPECT_EQ(0, _acmA->SetREDStatus(false));
	EXPECT_FALSE(_acmA->REDStatus());
	#ifdef SUPPORT_RED_SWB
	EXPECT_EQ(0, _acmA->SetREDStatus(true));
	EXPECT_TRUE(_acmA->REDStatus());
	#else
	EXPECT_EQ(-1, _acmA->SetREDStatus(true));
	EXPECT_FALSE(_acmA->REDStatus());
	#endif
	OpenOutFile(_testCntr);
	Run();
	_outFileB.Close();

	RegisterSendCodec('A', kNameISAC, 32000);
	EXPECT_EQ(0, SetVAD(false, false, VADNormal));
	#if defined(SUPPORT_RED_SWB) && defined(SUPPORT_RED_WB)
	OpenOutFile(_testCntr);
	EXPECT_EQ(0, _acmA->SetREDStatus(true));
	EXPECT_TRUE(_acmA->REDStatus());
	Run();

	RegisterSendCodec('A', kNameISAC, 16000);
	EXPECT_TRUE(_acmA->REDStatus());
	Run();

	RegisterSendCodec('A', kNameISAC, 32000);
	EXPECT_TRUE(_acmA->REDStatus());
	Run();

	RegisterSendCodec('A', kNameISAC, 16000);
	EXPECT_TRUE(_acmA->REDStatus());
	Run();
	_outFileB.Close();
	#else
	EXPECT_EQ(-1, _acmA->SetREDStatus(true));
	EXPECT_FALSE(_acmA->REDStatus());
	#endif

	#ifndef WEBRTC_CODEC_OPUS
	EXPECT_TRUE(false);
	printf("Opus needs to be activated to run this test\n");
	return;
	#endif

	RegisterSendCodec('A', kNameOPUS, 48000);

	#if defined(SUPPORT_RED_FB) && defined(SUPPORT_RED_SWB) &&\
	defined(SUPPORT_RED_WB)
	// Switch to codec, RED should remain switched on.
	EXPECT_TRUE(_acmA->REDStatus());
	#else
	EXPECT_FALSE(_acmA->REDStatus());
	#endif

	// _channelA2B imposes 25% packet loss rate.
	EXPECT_EQ(0, _acmA->SetPacketLossRate(25));

	#ifdef SUPPORT_RED_FB
	EXPECT_EQ(0, _acmA->SetREDStatus(true));
	EXPECT_TRUE(_acmA->REDStatus());
	// Codec FEC and RED are mutually exclusive.
	EXPECT_EQ(-1, _acmA->SetCodecFEC(true));

	EXPECT_EQ(0, _acmA->SetREDStatus(false));
	EXPECT_EQ(0, _acmA->SetCodecFEC(true));

	// Codec FEC and RED are mutually exclusive.
	EXPECT_EQ(-1, _acmA->SetREDStatus(true));
	#else
	EXPECT_EQ(-1, _acmA->SetREDStatus(true));
	EXPECT_FALSE(_acmA->REDStatus());
	EXPECT_EQ(0, _acmA->SetCodecFEC(true));
	#endif

	EXPECT_TRUE(_acmA->CodecFEC());
	OpenOutFile(_testCntr);
	Run();

	// Switch to L16 with RED.
	RegisterSendCodec('A', kNameL16, 8000);
	EXPECT_EQ(0, SetVAD(false, false, VADNormal));

	// L16 does not support FEC, so FEC should be turned off automatically.
	EXPECT_FALSE(_acmA->CodecFEC());

	EXPECT_EQ(0, _acmA->SetREDStatus(true));
	EXPECT_TRUE(_acmA->REDStatus());
	Run();

	// Switch to Opus again.
	RegisterSendCodec('A', kNameOPUS, 48000);
	#ifdef SUPPORT_RED_FB
	// Switch to codec, RED should remain switched on.
	EXPECT_TRUE(_acmA->REDStatus());
	#else
	EXPECT_FALSE(_acmA->REDStatus());
	#endif
	EXPECT_EQ(0, _acmA->SetREDStatus(false));
	EXPECT_EQ(0, _acmA->SetCodecFEC(false));
	Run();

	EXPECT_EQ(0, _acmA->SetCodecFEC(true));
	_outFileB.Close();

	// Codecs does not support internal FEC, cannot enable FEC.
	RegisterSendCodec('A', kNameG722, 16000);
	EXPECT_FALSE(_acmA->REDStatus());
	EXPECT_EQ(-1, _acmA->SetCodecFEC(true));
	EXPECT_FALSE(_acmA->CodecFEC());

	RegisterSendCodec('A', kNameISAC, 16000);
	EXPECT_FALSE(_acmA->REDStatus());
	EXPECT_EQ(-1, _acmA->SetCodecFEC(true));
	EXPECT_FALSE(_acmA->CodecFEC());

	// Codecs does not support internal FEC, disable FEC does not trigger failure.
	RegisterSendCodec('A', kNameG722, 16000);
	EXPECT_FALSE(_acmA->REDStatus());
	EXPECT_EQ(0, _acmA->SetCodecFEC(false));
	EXPECT_FALSE(_acmA->CodecFEC());

	RegisterSendCodec('A', kNameISAC, 16000);
	EXPECT_FALSE(_acmA->REDStatus());
	EXPECT_EQ(0, _acmA->SetCodecFEC(false));
	EXPECT_FALSE(_acmA->CodecFEC());

	#endif // defined(WEBRTC_CODEC_G722)
	}

	int32_t TestRedFec::SetVAD(bool enableDTX, bool enableVAD, ACMVADMode vadMode) {
	return _acmA->SetVAD(enableDTX, enableVAD, vadMode);
	}

	int16_t TestRedFec::RegisterSendCodec(char side, const char* codecName,
	int32_t samplingFreqHz) {
	std::cout << std::flush;
	AudioCodingModule* myACM;
	switch (side) {
	case 'A': {
	myACM = _acmA.get();
	break;
	}
	case 'B': {
	myACM = _acmB.get();
	break;
	}
	default:
	return -1;
	}

	if (myACM == NULL) {
	assert(false);
	return -1;
	}
	CodecInst myCodecParam;
	EXPECT_GT(AudioCodingModule::Codec(codecName, &myCodecParam,
	samplingFreqHz, 1), -1);
	EXPECT_GT(myACM->RegisterSendCodec(myCodecParam), -1);

	// Initialization was successful.
	return 0;
	}

	void TestRedFec::Run() {
	AudioFrame audioFrame;
	int32_t outFreqHzB = _outFileB.SamplingFrequency();
	// Set test length to 500 ms (50 blocks of 10 ms each).
	_inFileA.SetNum10MsBlocksToRead(50);
	// Fast-forward 1 second (100 blocks) since the file starts with silence.
	_inFileA.FastForward(100);

	while (!_inFileA.EndOfFile()) {
	EXPECT_GT(_inFileA.Read10MsData(audioFrame), 0);
	EXPECT_GE(_acmA->Add10MsData(audioFrame), 0);
	bool muted;
	EXPECT_EQ(0, _acmB->PlayoutData10Ms(outFreqHzB, &audioFrame, &muted));
	ASSERT_FALSE(muted);
	_outFileB.Write10MsData(audioFrame.data(), audioFrame.samples_per_channel_);
	}
	_inFileA.Rewind();
	}

	void TestRedFec::OpenOutFile(int16_t test_number) {
	std::string file_name;
	std::stringstream file_stream;
	file_stream << webrtc::test::OutputPath();
	file_stream << "TestRedFec_outFile_";
	file_stream << test_number << ".pcm";
	file_name = file_stream.str();
	_outFileB.Open(file_name, 16000, "wb");
	}

	} // namespace webrtc