video_engine/test/auto_test/source/vie_autotest_loopback.cc - src/webrtc - Git at Google

 /*
  *  Copyright (c) 2011 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.
  */

 //
 // vie_autotest_loopback.cc
 //
 // This code is also used as sample code for ViE 3.0
 //

 // ===================================================================
 //
 // BEGIN: VideoEngine 3.0 Sample Code
 //

 #include <iostream>

 #include "common_types.h"
 #include "tb_external_transport.h"
 #include "voe_base.h"
 #include "vie_autotest_defines.h"
 #include "vie_autotest.h"
 #include "vie_base.h"
 #include "vie_capture.h"
 #include "vie_codec.h"
 #include "vie_network.h"
 #include "vie_render.h"
 #include "vie_rtp_rtcp.h"

 #define VCM_RED_PAYLOAD_TYPE        96
 #define VCM_ULPFEC_PAYLOAD_TYPE     97

 int VideoEngineSampleCode(void* window1, void* window2)
 {
     //********************************************************
     //  Begin create/initialize Video Engine for testing
     //********************************************************

     int error = 0;

     //
     // Create a VideoEngine instance
     //
     webrtc::VideoEngine* ptrViE = NULL;
     ptrViE = webrtc::VideoEngine::Create();
     if (ptrViE == NULL)
     {
         printf("ERROR in VideoEngine::Create\n");
         return -1;
     }

     error = ptrViE->SetTraceFilter(webrtc::kTraceAll);
     if (error == -1)
     {
         printf("ERROR in VideoEngine::SetTraceLevel\n");
         return -1;
     }

     std::string trace_file =
         ViETest::GetResultOutputPath() + "ViELoopbackCall_trace.txt";
     error = ptrViE->SetTraceFile(trace_file.c_str());
     if (error == -1)
     {
         printf("ERROR in VideoEngine::SetTraceFile\n");
         return -1;
     }

     //
     // Init VideoEngine and create a channel
     //
     webrtc::ViEBase* ptrViEBase = webrtc::ViEBase::GetInterface(ptrViE);
     if (ptrViEBase == NULL)
     {
         printf("ERROR in ViEBase::GetInterface\n");
         return -1;
     }

     error = ptrViEBase->Init();
     if (error == -1)
     {
         printf("ERROR in ViEBase::Init\n");
         return -1;
     }

     webrtc::ViERTP_RTCP* ptrViERtpRtcp =
         webrtc::ViERTP_RTCP::GetInterface(ptrViE);
     if (ptrViERtpRtcp == NULL)
     {
         printf("ERROR in ViERTP_RTCP::GetInterface\n");
         return -1;
     }

     printf("Bandwidth estimation modes:\n");
     printf("1. Single-stream bandwidth estimation\n");
     printf("2. Multi-stream bandwidth estimation\n");
     printf("Choose bandwidth estimation mode (default is 1): ");
     std::string str;
     std::getline(std::cin, str);
     int bwe_mode_choice = atoi(str.c_str());
     webrtc::BandwidthEstimationMode bwe_mode;
     switch (bwe_mode_choice) {
       case 1:
         bwe_mode = webrtc::kViESingleStreamEstimation;
         break;
       case 2:
         bwe_mode = webrtc::kViEMultiStreamEstimation;
         break;
       default:
         bwe_mode = webrtc::kViESingleStreamEstimation;
         break;
     }

     error = ptrViERtpRtcp->SetBandwidthEstimationMode(bwe_mode);
     if (error == -1)
     {
         printf("ERROR in ViERTP_RTCP::SetBandwidthEstimationMode\n");
         return -1;
     }

     int videoChannel = -1;
     error = ptrViEBase->CreateChannel(videoChannel);
     if (error == -1)
     {
         printf("ERROR in ViEBase::CreateChannel\n");
         return -1;
     }

     //
     // List available capture devices, allocate and connect.
     //
     webrtc::ViECapture* ptrViECapture =
         webrtc::ViECapture::GetInterface(ptrViE);
     if (ptrViEBase == NULL)
     {
         printf("ERROR in ViECapture::GetInterface\n");
         return -1;
     }

     const unsigned int KMaxDeviceNameLength = 128;
     const unsigned int KMaxUniqueIdLength = 256;
     char deviceName[KMaxDeviceNameLength];
     memset(deviceName, 0, KMaxDeviceNameLength);
     char uniqueId[KMaxUniqueIdLength];
     memset(uniqueId, 0, KMaxUniqueIdLength);

     printf("Available capture devices:\n");
     int captureIdx = 0;
     for (captureIdx = 0;
          captureIdx < ptrViECapture->NumberOfCaptureDevices();
          captureIdx++)
     {
         memset(deviceName, 0, KMaxDeviceNameLength);
         memset(uniqueId, 0, KMaxUniqueIdLength);

         error = ptrViECapture->GetCaptureDevice(captureIdx, deviceName,
                                                 KMaxDeviceNameLength, uniqueId,
                                                 KMaxUniqueIdLength);
         if (error == -1)
         {
             printf("ERROR in ViECapture::GetCaptureDevice\n");
             return -1;
         }
         printf("\t %d. %s\n", captureIdx + 1, deviceName);
     }
     printf("\nChoose capture device: ");
 #ifdef WEBRTC_ANDROID
     captureIdx = 0;
     printf("0\n");
 #else
     if (scanf("%d", &captureIdx) != 1)
     {
         printf("Error in scanf()\n");
         return -1;
     }
     getchar();
     captureIdx = captureIdx - 1; // Compensate for idx start at 1.
 #endif
     error = ptrViECapture->GetCaptureDevice(captureIdx, deviceName,
                                             KMaxDeviceNameLength, uniqueId,
                                             KMaxUniqueIdLength);
     if (error == -1)
     {
         printf("ERROR in ViECapture::GetCaptureDevice\n");
         return -1;
     }

     int captureId = 0;
     error = ptrViECapture->AllocateCaptureDevice(uniqueId, KMaxUniqueIdLength,
                                                  captureId);
     if (error == -1)
     {
         printf("ERROR in ViECapture::AllocateCaptureDevice\n");
         return -1;
     }

     error = ptrViECapture->ConnectCaptureDevice(captureId, videoChannel);
     if (error == -1)
     {
         printf("ERROR in ViECapture::ConnectCaptureDevice\n");
         return -1;
     }

     error = ptrViECapture->StartCapture(captureId);
     if (error == -1)
     {
         printf("ERROR in ViECapture::StartCapture\n");
         return -1;
     }

     //
     // RTP/RTCP settings
     //

     error = ptrViERtpRtcp->SetRTCPStatus(videoChannel,
                                          webrtc::kRtcpCompound_RFC4585);
     if (error == -1)
     {
         printf("ERROR in ViERTP_RTCP::SetRTCPStatus\n");
         return -1;
     }

     error = ptrViERtpRtcp->SetKeyFrameRequestMethod(
         videoChannel, webrtc::kViEKeyFrameRequestPliRtcp);
     if (error == -1)
     {
         printf("ERROR in ViERTP_RTCP::SetKeyFrameRequestMethod\n");
         return -1;
     }

     error = ptrViERtpRtcp->SetRembStatus(videoChannel, true, true);
     if (error == -1)
     {
         printf("ERROR in ViERTP_RTCP::SetTMMBRStatus\n");
         return -1;
     }

     //
     // Set up rendering
     //
     webrtc::ViERender* ptrViERender = webrtc::ViERender::GetInterface(ptrViE);
     if (ptrViERender == NULL)
     {
         printf("ERROR in ViERender::GetInterface\n");
         return -1;
     }

     error
         = ptrViERender->AddRenderer(captureId, window1, 0, 0.0, 0.0, 1.0, 1.0);
     if (error == -1)
     {
         printf("ERROR in ViERender::AddRenderer\n");
         return -1;
     }

     error = ptrViERender->StartRender(captureId);
     if (error == -1)
     {
         printf("ERROR in ViERender::StartRender\n");
         return -1;
     }

     error = ptrViERender->AddRenderer(videoChannel, window2, 1, 0.0, 0.0, 1.0,
                                       1.0);
     if (error == -1)
     {
         printf("ERROR in ViERender::AddRenderer\n");
         return -1;
     }

     error = ptrViERender->StartRender(videoChannel);
     if (error == -1)
     {
         printf("ERROR in ViERender::StartRender\n");
         return -1;
     }

     //
     // Setup codecs
     //
     webrtc::ViECodec* ptrViECodec = webrtc::ViECodec::GetInterface(ptrViE);
     if (ptrViECodec == NULL)
     {
         printf("ERROR in ViECodec::GetInterface\n");
         return -1;
     }

     // Check available codecs and prepare receive codecs
     printf("\nAvailable codecs:\n");
     webrtc::VideoCodec videoCodec;
     memset(&videoCodec, 0, sizeof(webrtc::VideoCodec));
     int codecIdx = 0;
     for (codecIdx = 0; codecIdx < ptrViECodec->NumberOfCodecs(); codecIdx++)
     {
         error = ptrViECodec->GetCodec(codecIdx, videoCodec);
         if (error == -1)
         {
             printf("ERROR in ViECodec::GetCodec\n");
             return -1;
         }

         // try to keep the test frame size small when I420
         if (videoCodec.codecType == webrtc::kVideoCodecI420)
         {
             videoCodec.width = 176;
             videoCodec.height = 144;
         }

         error = ptrViECodec->SetReceiveCodec(videoChannel, videoCodec);
         if (error == -1)
         {
             printf("ERROR in ViECodec::SetReceiveCodec\n");
             return -1;
         }
         if (videoCodec.codecType != webrtc::kVideoCodecRED
             && videoCodec.codecType != webrtc::kVideoCodecULPFEC)
         {
             printf("\t %d. %s\n", codecIdx + 1, videoCodec.plName);
         }
     }
     printf("Choose codec: ");
 #ifdef WEBRTC_ANDROID
     codecIdx = 0;
     printf("0\n");
 #else
     if (scanf("%d", &codecIdx) != 1)
     {
         printf("Error in scanf()\n");
         return -1;
     }
     getchar();
     codecIdx = codecIdx - 1; // Compensate for idx start at 1.
 #endif

     error = ptrViECodec->GetCodec(codecIdx, videoCodec);
     if (error == -1)
     {
         printf("ERROR in ViECodec::GetCodec\n");
         return -1;
     }

     // Set spatial resolution option
     std::cout << std::endl;
     std::cout << "Enter frame size option (default is CIF):" << std::endl;
     std::cout << "1. QCIF (176X144) " << std::endl;
     std::cout << "2. CIF  (352X288) " << std::endl;
     std::cout << "3. VGA  (640X480) " << std::endl;
     std::cout << "4. 4CIF (704X576) " << std::endl;
     std::cout << "5. WHD  (1280X720) " << std::endl;
     std::getline(std::cin, str);
     int resolnOption = atoi(str.c_str());
     // Try to keep the test frame size small when I420
     if (videoCodec.codecType == webrtc::kVideoCodecI420)
     {
        resolnOption = 1;
     }
     switch (resolnOption)
     {
         case 1:
             videoCodec.width = 176;
             videoCodec.height = 144;
             break;
         case 2:
             videoCodec.width = 352;
             videoCodec.height = 288;
             break;
         case 3:
             videoCodec.width = 640;
             videoCodec.height = 480;
             break;
         case 4:
             videoCodec.width = 704;
             videoCodec.height = 576;
             break;
         case 5:
             videoCodec.width = 1280;
             videoCodec.height = 720;
             break;
     }

     // Set number of temporal layers.
     std::cout << std::endl;
     std::cout << "Choose number of temporal layers (1 to 4).";
     std::cout << "Press enter for default: \n";
     std::getline(std::cin, str);
     int numTemporalLayers = atoi(str.c_str());
     if(numTemporalLayers != 0)
     {
         videoCodec.codecSpecific.VP8.numberOfTemporalLayers = numTemporalLayers;
     }

     // Set start bit rate
     std::cout << std::endl;
     std::cout << "Choose start rate (in kbps). Press enter for default:  ";
     std::getline(std::cin, str);
     int startRate = atoi(str.c_str());
     if(startRate != 0)
     {
         videoCodec.startBitrate=startRate;
     }

     error = ptrViECodec->SetSendCodec(videoChannel, videoCodec);
     if (error == -1)
     {
         printf("ERROR in ViECodec::SetSendCodec\n");
         return -1;
     }

     //
     // Choose Protection Mode
     //
     std::cout << std::endl;
     std::cout << "Enter Protection Method:" << std::endl;
     std::cout << "0. None" << std::endl;
     std::cout << "1. FEC" << std::endl;
     std::cout << "2. NACK" << std::endl;
     std::cout << "3. NACK+FEC" << std::endl;
     std::getline(std::cin, str);
     int protectionMethod = atoi(str.c_str());
     error = 0;
     bool temporalToggling = true;
     switch (protectionMethod)
     {
         case 0: // None: default is no protection
             break;

         case 1: // FEC only
             error = ptrViERtpRtcp->SetFECStatus(videoChannel,
                                                 true,
                                                 VCM_RED_PAYLOAD_TYPE,
                                                 VCM_ULPFEC_PAYLOAD_TYPE);
             temporalToggling = false;
             break;

         case 2: // Nack only
             error = ptrViERtpRtcp->SetNACKStatus(videoChannel, true);

             break;

         case 3: // Hybrid NAck and FEC
             error = ptrViERtpRtcp->SetHybridNACKFECStatus(
                 videoChannel,
                 true,
                 VCM_RED_PAYLOAD_TYPE,
                 VCM_ULPFEC_PAYLOAD_TYPE);
             temporalToggling = false;
             break;
      }

     if (error < 0)
     {
         printf("ERROR in ViERTP_RTCP::SetProtectionStatus\n");
     }


     //
     // Address settings
     //
     webrtc::ViENetwork* ptrViENetwork =
         webrtc::ViENetwork::GetInterface(ptrViE);
     if (ptrViENetwork == NULL)
     {
         printf("ERROR in ViENetwork::GetInterface\n");
         return -1;
     }

     // Setting External transport
     TbExternalTransport extTransport(*(ptrViENetwork), videoChannel, NULL);

     int testMode = 0;
     std::cout << std::endl;
     std::cout << "Enter 1 for testing packet loss and delay with "
         "external transport: ";
     std::string test_str;
     std::getline(std::cin, test_str);
     testMode = atoi(test_str.c_str());
     if (testMode == 1)
     {
         // Avoid changing SSRC due to collision.
         error = ptrViERtpRtcp->SetLocalSSRC(videoChannel, 1);

         error = ptrViENetwork->RegisterSendTransport(videoChannel,
                                                      extTransport);
         if (error == -1)
         {
             printf("ERROR in ViECodec::RegisterSendTransport \n");
             return -1;
         }

         // Setting uniform loss. Actual values will be set by user.
         NetworkParameters network;
         network.loss_model = kUniformLoss;
         // Set up packet loss value
         std::cout << "Enter Packet Loss Percentage" << std::endl;
         std::string rate_str;
         std::getline(std::cin, rate_str);
         network.packet_loss_rate = atoi(rate_str.c_str());
         if (network.packet_loss_rate > 0) {
           temporalToggling = false;
         }

         // Set network delay value
         std::cout << "Enter network delay value [mS]" << std::endl;
         std::string delay_str;
         std::getline(std::cin, delay_str);
         network.mean_one_way_delay = atoi(delay_str.c_str());
         extTransport.SetNetworkParameters(network);
         if (numTemporalLayers > 1 && temporalToggling) {
           extTransport.SetTemporalToggle(numTemporalLayers);
         } else {
           // Disabled
           extTransport.SetTemporalToggle(0);
         }
     }
     else
     {
         const char* ipAddress = "127.0.0.1";
         const unsigned short rtpPort = 6000;
         std::cout << std::endl;
         std::cout << "Using rtp port: " << rtpPort << std::endl;
         std::cout << std::endl;
         error = ptrViENetwork->SetLocalReceiver(videoChannel, rtpPort);
         if (error == -1)
         {
             printf("ERROR in ViENetwork::SetLocalReceiver\n");
             return -1;
         }
         error = ptrViENetwork->SetSendDestination(videoChannel,
                                                   ipAddress, rtpPort);
         if (error == -1)
         {
             printf("ERROR in ViENetwork::SetSendDestination\n");
             return -1;
         }
     }

     error = ptrViEBase->StartReceive(videoChannel);
     if (error == -1)
     {
         printf("ERROR in ViENetwork::StartReceive\n");
         return -1;
     }

     error = ptrViEBase->StartSend(videoChannel);
     if (error == -1)
     {
         printf("ERROR in ViENetwork::StartSend\n");
         return -1;
     }

     //********************************************************
     //  Engine started
     //********************************************************


     // Call started
     printf("\nLoopback call started\n\n");
     printf("Press enter to stop...");
     while ((getchar()) != '\n')
         ;

     //********************************************************
     //  Testing finished. Tear down Video Engine
     //********************************************************

     error = ptrViEBase->StopReceive(videoChannel);
     if (error == -1)
     {
         printf("ERROR in ViEBase::StopReceive\n");
         return -1;
     }

     error = ptrViEBase->StopSend(videoChannel);
     if (error == -1)
     {
         printf("ERROR in ViEBase::StopSend\n");
         return -1;
     }

     error = ptrViERender->StopRender(captureId);
     if (error == -1)
     {
         printf("ERROR in ViERender::StopRender\n");
         return -1;
     }

     error = ptrViERender->RemoveRenderer(captureId);
     if (error == -1)
     {
         printf("ERROR in ViERender::RemoveRenderer\n");
         return -1;
     }

     error = ptrViERender->StopRender(videoChannel);
     if (error == -1)
     {
         printf("ERROR in ViERender::StopRender\n");
         return -1;
     }

     error = ptrViERender->RemoveRenderer(videoChannel);
     if (error == -1)
     {
         printf("ERROR in ViERender::RemoveRenderer\n");
         return -1;
     }

     error = ptrViECapture->StopCapture(captureId);
     if (error == -1)
     {
         printf("ERROR in ViECapture::StopCapture\n");
         return -1;
     }

     error = ptrViECapture->DisconnectCaptureDevice(videoChannel);
     if (error == -1)
     {
         printf("ERROR in ViECapture::DisconnectCaptureDevice\n");
         return -1;
     }

     error = ptrViECapture->ReleaseCaptureDevice(captureId);
     if (error == -1)
     {
         printf("ERROR in ViECapture::ReleaseCaptureDevice\n");
         return -1;
     }

     error = ptrViEBase->DeleteChannel(videoChannel);
     if (error == -1)
     {
         printf("ERROR in ViEBase::DeleteChannel\n");
         return -1;
     }

     int remainingInterfaces = 0;
     remainingInterfaces = ptrViECodec->Release();
     remainingInterfaces += ptrViECapture->Release();
     remainingInterfaces += ptrViERtpRtcp->Release();
     remainingInterfaces += ptrViERender->Release();
     remainingInterfaces += ptrViENetwork->Release();
     remainingInterfaces += ptrViEBase->Release();
     if (remainingInterfaces > 0)
     {
         printf("ERROR: Could not release all interfaces\n");
         return -1;
     }

     bool deleted = webrtc::VideoEngine::Delete(ptrViE);
     if (deleted == false)
     {
         printf("ERROR in VideoEngine::Delete\n");
         return -1;
     }

     return 0;

     //
     // END:  VideoEngine 3.0 Sample Code
     //
     // ===================================================================
 }

 int ViEAutoTest::ViELoopbackCall()
 {
     ViETest::Log(" ");
     ViETest::Log("========================================");
     ViETest::Log(" ViE Autotest Loopback Call\n");

     if (VideoEngineSampleCode(_window1, _window2) == 0)
     {
         ViETest::Log(" ");
         ViETest::Log(" ViE Autotest Loopback Call Done");
         ViETest::Log("========================================");
         ViETest::Log(" ");

         return 0;
     }

     ViETest::Log(" ");
     ViETest::Log(" ViE Autotest Loopback Call Failed");
     ViETest::Log("========================================");
     ViETest::Log(" ");
     return 1;

 }
	/*
	* Copyright (c) 2011 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.
	*/

	//
	// vie_autotest_loopback.cc
	//
	// This code is also used as sample code for ViE 3.0
	//

	// ===================================================================
	//
	// BEGIN: VideoEngine 3.0 Sample Code
	//

	#include <iostream>

	#include "common_types.h"
	#include "tb_external_transport.h"
	#include "voe_base.h"
	#include "vie_autotest_defines.h"
	#include "vie_autotest.h"
	#include "vie_base.h"
	#include "vie_capture.h"
	#include "vie_codec.h"
	#include "vie_network.h"
	#include "vie_render.h"
	#include "vie_rtp_rtcp.h"

	#define VCM_RED_PAYLOAD_TYPE 96
	#define VCM_ULPFEC_PAYLOAD_TYPE 97

	int VideoEngineSampleCode(void* window1, void* window2)
	{
	//********************************************************
	// Begin create/initialize Video Engine for testing
	//********************************************************

	int error = 0;

	//
	// Create a VideoEngine instance
	//
	webrtc::VideoEngine* ptrViE = NULL;
	ptrViE = webrtc::VideoEngine::Create();
	if (ptrViE == NULL)
	{
	printf("ERROR in VideoEngine::Create\n");
	return -1;
	}

	error = ptrViE->SetTraceFilter(webrtc::kTraceAll);
	if (error == -1)
	{
	printf("ERROR in VideoEngine::SetTraceLevel\n");
	return -1;
	}

	std::string trace_file =
	ViETest::GetResultOutputPath() + "ViELoopbackCall_trace.txt";
	error = ptrViE->SetTraceFile(trace_file.c_str());
	if (error == -1)
	{
	printf("ERROR in VideoEngine::SetTraceFile\n");
	return -1;
	}

	//
	// Init VideoEngine and create a channel
	//
	webrtc::ViEBase* ptrViEBase = webrtc::ViEBase::GetInterface(ptrViE);
	if (ptrViEBase == NULL)
	{
	printf("ERROR in ViEBase::GetInterface\n");
	return -1;
	}

	error = ptrViEBase->Init();
	if (error == -1)
	{
	printf("ERROR in ViEBase::Init\n");
	return -1;
	}

	webrtc::ViERTP_RTCP* ptrViERtpRtcp =
	webrtc::ViERTP_RTCP::GetInterface(ptrViE);
	if (ptrViERtpRtcp == NULL)
	{
	printf("ERROR in ViERTP_RTCP::GetInterface\n");
	return -1;
	}

	printf("Bandwidth estimation modes:\n");
	printf("1. Single-stream bandwidth estimation\n");
	printf("2. Multi-stream bandwidth estimation\n");
	printf("Choose bandwidth estimation mode (default is 1): ");
	std::string str;
	std::getline(std::cin, str);
	int bwe_mode_choice = atoi(str.c_str());
	webrtc::BandwidthEstimationMode bwe_mode;
	switch (bwe_mode_choice) {
	case 1:
	bwe_mode = webrtc::kViESingleStreamEstimation;
	break;
	case 2:
	bwe_mode = webrtc::kViEMultiStreamEstimation;
	break;
	default:
	bwe_mode = webrtc::kViESingleStreamEstimation;
	break;
	}

	error = ptrViERtpRtcp->SetBandwidthEstimationMode(bwe_mode);
	if (error == -1)
	{
	printf("ERROR in ViERTP_RTCP::SetBandwidthEstimationMode\n");
	return -1;
	}

	int videoChannel = -1;
	error = ptrViEBase->CreateChannel(videoChannel);
	if (error == -1)
	{
	printf("ERROR in ViEBase::CreateChannel\n");
	return -1;
	}

	//
	// List available capture devices, allocate and connect.
	//
	webrtc::ViECapture* ptrViECapture =
	webrtc::ViECapture::GetInterface(ptrViE);
	if (ptrViEBase == NULL)
	{
	printf("ERROR in ViECapture::GetInterface\n");
	return -1;
	}

	const unsigned int KMaxDeviceNameLength = 128;
	const unsigned int KMaxUniqueIdLength = 256;
	char deviceName[KMaxDeviceNameLength];
	memset(deviceName, 0, KMaxDeviceNameLength);
	char uniqueId[KMaxUniqueIdLength];
	memset(uniqueId, 0, KMaxUniqueIdLength);

	printf("Available capture devices:\n");
	int captureIdx = 0;
	for (captureIdx = 0;
	captureIdx < ptrViECapture->NumberOfCaptureDevices();
	captureIdx++)
	{
	memset(deviceName, 0, KMaxDeviceNameLength);
	memset(uniqueId, 0, KMaxUniqueIdLength);

	error = ptrViECapture->GetCaptureDevice(captureIdx, deviceName,
	KMaxDeviceNameLength, uniqueId,
	KMaxUniqueIdLength);
	if (error == -1)
	{
	printf("ERROR in ViECapture::GetCaptureDevice\n");
	return -1;
	}
	printf("\t %d. %s\n", captureIdx + 1, deviceName);
	}
	printf("\nChoose capture device: ");
	#ifdef WEBRTC_ANDROID
	captureIdx = 0;
	printf("0\n");
	#else
	if (scanf("%d", &captureIdx) != 1)
	{
	printf("Error in scanf()\n");
	return -1;
	}
	getchar();
	captureIdx = captureIdx - 1; // Compensate for idx start at 1.
	#endif
	error = ptrViECapture->GetCaptureDevice(captureIdx, deviceName,
	KMaxDeviceNameLength, uniqueId,
	KMaxUniqueIdLength);
	if (error == -1)
	{
	printf("ERROR in ViECapture::GetCaptureDevice\n");
	return -1;
	}

	int captureId = 0;
	error = ptrViECapture->AllocateCaptureDevice(uniqueId, KMaxUniqueIdLength,
	captureId);
	if (error == -1)
	{
	printf("ERROR in ViECapture::AllocateCaptureDevice\n");
	return -1;
	}

	error = ptrViECapture->ConnectCaptureDevice(captureId, videoChannel);
	if (error == -1)
	{
	printf("ERROR in ViECapture::ConnectCaptureDevice\n");
	return -1;
	}

	error = ptrViECapture->StartCapture(captureId);
	if (error == -1)
	{
	printf("ERROR in ViECapture::StartCapture\n");
	return -1;
	}

	//
	// RTP/RTCP settings
	//

	error = ptrViERtpRtcp->SetRTCPStatus(videoChannel,
	webrtc::kRtcpCompound_RFC4585);
	if (error == -1)
	{
	printf("ERROR in ViERTP_RTCP::SetRTCPStatus\n");
	return -1;
	}

	error = ptrViERtpRtcp->SetKeyFrameRequestMethod(
	videoChannel, webrtc::kViEKeyFrameRequestPliRtcp);
	if (error == -1)
	{
	printf("ERROR in ViERTP_RTCP::SetKeyFrameRequestMethod\n");
	return -1;
	}

	error = ptrViERtpRtcp->SetRembStatus(videoChannel, true, true);
	if (error == -1)
	{
	printf("ERROR in ViERTP_RTCP::SetTMMBRStatus\n");
	return -1;
	}

	//
	// Set up rendering
	//
	webrtc::ViERender* ptrViERender = webrtc::ViERender::GetInterface(ptrViE);
	if (ptrViERender == NULL)
	{
	printf("ERROR in ViERender::GetInterface\n");
	return -1;
	}

	error
	= ptrViERender->AddRenderer(captureId, window1, 0, 0.0, 0.0, 1.0, 1.0);
	if (error == -1)
	{
	printf("ERROR in ViERender::AddRenderer\n");
	return -1;
	}

	error = ptrViERender->StartRender(captureId);
	if (error == -1)
	{
	printf("ERROR in ViERender::StartRender\n");
	return -1;
	}

	error = ptrViERender->AddRenderer(videoChannel, window2, 1, 0.0, 0.0, 1.0,
	1.0);
	if (error == -1)
	{
	printf("ERROR in ViERender::AddRenderer\n");
	return -1;
	}

	error = ptrViERender->StartRender(videoChannel);
	if (error == -1)
	{
	printf("ERROR in ViERender::StartRender\n");
	return -1;
	}

	//
	// Setup codecs
	//
	webrtc::ViECodec* ptrViECodec = webrtc::ViECodec::GetInterface(ptrViE);
	if (ptrViECodec == NULL)
	{
	printf("ERROR in ViECodec::GetInterface\n");
	return -1;
	}

	// Check available codecs and prepare receive codecs
	printf("\nAvailable codecs:\n");
	webrtc::VideoCodec videoCodec;
	memset(&videoCodec, 0, sizeof(webrtc::VideoCodec));
	int codecIdx = 0;
	for (codecIdx = 0; codecIdx < ptrViECodec->NumberOfCodecs(); codecIdx++)
	{
	error = ptrViECodec->GetCodec(codecIdx, videoCodec);
	if (error == -1)
	{
	printf("ERROR in ViECodec::GetCodec\n");
	return -1;
	}

	// try to keep the test frame size small when I420
	if (videoCodec.codecType == webrtc::kVideoCodecI420)
	{
	videoCodec.width = 176;
	videoCodec.height = 144;
	}

	error = ptrViECodec->SetReceiveCodec(videoChannel, videoCodec);
	if (error == -1)
	{
	printf("ERROR in ViECodec::SetReceiveCodec\n");
	return -1;
	}
	if (videoCodec.codecType != webrtc::kVideoCodecRED
	&& videoCodec.codecType != webrtc::kVideoCodecULPFEC)
	{
	printf("\t %d. %s\n", codecIdx + 1, videoCodec.plName);
	}
	}
	printf("Choose codec: ");
	#ifdef WEBRTC_ANDROID
	codecIdx = 0;
	printf("0\n");
	#else
	if (scanf("%d", &codecIdx) != 1)
	{
	printf("Error in scanf()\n");
	return -1;
	}
	getchar();
	codecIdx = codecIdx - 1; // Compensate for idx start at 1.
	#endif

	error = ptrViECodec->GetCodec(codecIdx, videoCodec);
	if (error == -1)
	{
	printf("ERROR in ViECodec::GetCodec\n");
	return -1;
	}

	// Set spatial resolution option
	std::cout << std::endl;
	std::cout << "Enter frame size option (default is CIF):" << std::endl;
	std::cout << "1. QCIF (176X144) " << std::endl;
	std::cout << "2. CIF (352X288) " << std::endl;
	std::cout << "3. VGA (640X480) " << std::endl;
	std::cout << "4. 4CIF (704X576) " << std::endl;
	std::cout << "5. WHD (1280X720) " << std::endl;
	std::getline(std::cin, str);
	int resolnOption = atoi(str.c_str());
	// Try to keep the test frame size small when I420
	if (videoCodec.codecType == webrtc::kVideoCodecI420)
	{
	resolnOption = 1;
	}
	switch (resolnOption)
	{
	case 1:
	videoCodec.width = 176;
	videoCodec.height = 144;
	break;
	case 2:
	videoCodec.width = 352;
	videoCodec.height = 288;
	break;
	case 3:
	videoCodec.width = 640;
	videoCodec.height = 480;
	break;
	case 4:
	videoCodec.width = 704;
	videoCodec.height = 576;
	break;
	case 5:
	videoCodec.width = 1280;
	videoCodec.height = 720;
	break;
	}

	// Set number of temporal layers.
	std::cout << std::endl;
	std::cout << "Choose number of temporal layers (1 to 4).";
	std::cout << "Press enter for default: \n";
	std::getline(std::cin, str);
	int numTemporalLayers = atoi(str.c_str());
	if(numTemporalLayers != 0)
	{
	videoCodec.codecSpecific.VP8.numberOfTemporalLayers = numTemporalLayers;
	}

	// Set start bit rate
	std::cout << std::endl;
	std::cout << "Choose start rate (in kbps). Press enter for default: ";
	std::getline(std::cin, str);
	int startRate = atoi(str.c_str());
	if(startRate != 0)
	{
	videoCodec.startBitrate=startRate;
	}

	error = ptrViECodec->SetSendCodec(videoChannel, videoCodec);
	if (error == -1)
	{
	printf("ERROR in ViECodec::SetSendCodec\n");
	return -1;
	}

	//
	// Choose Protection Mode
	//
	std::cout << std::endl;
	std::cout << "Enter Protection Method:" << std::endl;
	std::cout << "0. None" << std::endl;
	std::cout << "1. FEC" << std::endl;
	std::cout << "2. NACK" << std::endl;
	std::cout << "3. NACK+FEC" << std::endl;
	std::getline(std::cin, str);
	int protectionMethod = atoi(str.c_str());
	error = 0;
	bool temporalToggling = true;
	switch (protectionMethod)
	{
	case 0: // None: default is no protection
	break;

	case 1: // FEC only
	error = ptrViERtpRtcp->SetFECStatus(videoChannel,
	true,
	VCM_RED_PAYLOAD_TYPE,
	VCM_ULPFEC_PAYLOAD_TYPE);
	temporalToggling = false;
	break;

	case 2: // Nack only
	error = ptrViERtpRtcp->SetNACKStatus(videoChannel, true);

	break;

	case 3: // Hybrid NAck and FEC
	error = ptrViERtpRtcp->SetHybridNACKFECStatus(
	videoChannel,
	true,
	VCM_RED_PAYLOAD_TYPE,
	VCM_ULPFEC_PAYLOAD_TYPE);
	temporalToggling = false;
	break;
	}

	if (error < 0)
	{
	printf("ERROR in ViERTP_RTCP::SetProtectionStatus\n");
	}


	//
	// Address settings
	//
	webrtc::ViENetwork* ptrViENetwork =
	webrtc::ViENetwork::GetInterface(ptrViE);
	if (ptrViENetwork == NULL)
	{
	printf("ERROR in ViENetwork::GetInterface\n");
	return -1;
	}

	// Setting External transport
	TbExternalTransport extTransport(*(ptrViENetwork), videoChannel, NULL);

	int testMode = 0;
	std::cout << std::endl;
	std::cout << "Enter 1 for testing packet loss and delay with "
	"external transport: ";
	std::string test_str;
	std::getline(std::cin, test_str);
	testMode = atoi(test_str.c_str());
	if (testMode == 1)
	{
	// Avoid changing SSRC due to collision.
	error = ptrViERtpRtcp->SetLocalSSRC(videoChannel, 1);

	error = ptrViENetwork->RegisterSendTransport(videoChannel,
	extTransport);
	if (error == -1)
	{
	printf("ERROR in ViECodec::RegisterSendTransport \n");
	return -1;
	}

	// Setting uniform loss. Actual values will be set by user.
	NetworkParameters network;
	network.loss_model = kUniformLoss;
	// Set up packet loss value
	std::cout << "Enter Packet Loss Percentage" << std::endl;
	std::string rate_str;
	std::getline(std::cin, rate_str);
	network.packet_loss_rate = atoi(rate_str.c_str());
	if (network.packet_loss_rate > 0) {
	temporalToggling = false;
	}

	// Set network delay value
	std::cout << "Enter network delay value [mS]" << std::endl;
	std::string delay_str;
	std::getline(std::cin, delay_str);
	network.mean_one_way_delay = atoi(delay_str.c_str());
	extTransport.SetNetworkParameters(network);
	if (numTemporalLayers > 1 && temporalToggling) {
	extTransport.SetTemporalToggle(numTemporalLayers);
	} else {
	// Disabled
	extTransport.SetTemporalToggle(0);
	}
	}
	else
	{
	const char* ipAddress = "127.0.0.1";
	const unsigned short rtpPort = 6000;
	std::cout << std::endl;
	std::cout << "Using rtp port: " << rtpPort << std::endl;
	std::cout << std::endl;
	error = ptrViENetwork->SetLocalReceiver(videoChannel, rtpPort);
	if (error == -1)
	{
	printf("ERROR in ViENetwork::SetLocalReceiver\n");
	return -1;
	}
	error = ptrViENetwork->SetSendDestination(videoChannel,
	ipAddress, rtpPort);
	if (error == -1)
	{
	printf("ERROR in ViENetwork::SetSendDestination\n");
	return -1;
	}
	}

	error = ptrViEBase->StartReceive(videoChannel);
	if (error == -1)
	{
	printf("ERROR in ViENetwork::StartReceive\n");
	return -1;
	}

	error = ptrViEBase->StartSend(videoChannel);
	if (error == -1)
	{
	printf("ERROR in ViENetwork::StartSend\n");
	return -1;
	}

	//********************************************************
	// Engine started
	//********************************************************


	// Call started
	printf("\nLoopback call started\n\n");
	printf("Press enter to stop...");
	while ((getchar()) != '\n')
	;

	//********************************************************
	// Testing finished. Tear down Video Engine
	//********************************************************

	error = ptrViEBase->StopReceive(videoChannel);
	if (error == -1)
	{
	printf("ERROR in ViEBase::StopReceive\n");
	return -1;
	}

	error = ptrViEBase->StopSend(videoChannel);
	if (error == -1)
	{
	printf("ERROR in ViEBase::StopSend\n");
	return -1;
	}

	error = ptrViERender->StopRender(captureId);
	if (error == -1)
	{
	printf("ERROR in ViERender::StopRender\n");
	return -1;
	}

	error = ptrViERender->RemoveRenderer(captureId);
	if (error == -1)
	{
	printf("ERROR in ViERender::RemoveRenderer\n");
	return -1;
	}

	error = ptrViERender->StopRender(videoChannel);
	if (error == -1)
	{
	printf("ERROR in ViERender::StopRender\n");
	return -1;
	}

	error = ptrViERender->RemoveRenderer(videoChannel);
	if (error == -1)
	{
	printf("ERROR in ViERender::RemoveRenderer\n");
	return -1;
	}

	error = ptrViECapture->StopCapture(captureId);
	if (error == -1)
	{
	printf("ERROR in ViECapture::StopCapture\n");
	return -1;
	}

	error = ptrViECapture->DisconnectCaptureDevice(videoChannel);
	if (error == -1)
	{
	printf("ERROR in ViECapture::DisconnectCaptureDevice\n");
	return -1;
	}

	error = ptrViECapture->ReleaseCaptureDevice(captureId);
	if (error == -1)
	{
	printf("ERROR in ViECapture::ReleaseCaptureDevice\n");
	return -1;
	}

	error = ptrViEBase->DeleteChannel(videoChannel);
	if (error == -1)
	{
	printf("ERROR in ViEBase::DeleteChannel\n");
	return -1;
	}

	int remainingInterfaces = 0;
	remainingInterfaces = ptrViECodec->Release();
	remainingInterfaces += ptrViECapture->Release();
	remainingInterfaces += ptrViERtpRtcp->Release();
	remainingInterfaces += ptrViERender->Release();
	remainingInterfaces += ptrViENetwork->Release();
	remainingInterfaces += ptrViEBase->Release();
	if (remainingInterfaces > 0)
	{
	printf("ERROR: Could not release all interfaces\n");
	return -1;
	}

	bool deleted = webrtc::VideoEngine::Delete(ptrViE);
	if (deleted == false)
	{
	printf("ERROR in VideoEngine::Delete\n");
	return -1;
	}

	return 0;

	//
	// END: VideoEngine 3.0 Sample Code
	//
	// ===================================================================
	}

	int ViEAutoTest::ViELoopbackCall()
	{
	ViETest::Log(" ");
	ViETest::Log("========================================");
	ViETest::Log(" ViE Autotest Loopback Call\n");

	if (VideoEngineSampleCode(_window1, _window2) == 0)
	{
	ViETest::Log(" ");
	ViETest::Log(" ViE Autotest Loopback Call Done");
	ViETest::Log("========================================");
	ViETest::Log(" ");

	return 0;
	}

	ViETest::Log(" ");
	ViETest::Log(" ViE Autotest Loopback Call Failed");
	ViETest::Log("========================================");
	ViETest::Log(" ");
	return 1;

	}