// PCM2G711Transformer.cpp: implementation of the PCM2G711Transformer class.
//
//////////////////////////////////////////////////////////////////////

#include "PCM2G711Transformer.h"
#include "AudioSampleManager.h"
#include "AudioSample.h"

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

PCM2G711Transformer::PCM2G711Transformer()
{
	char subFacilityName[100];
	sprintf(subFacilityName, "PCM2G711Transformer:%x", this);
	tracer.SetSubFacilityName(subFacilityName);
	SetTraceLevel();
}

PCM2G711Transformer::~PCM2G711Transformer()
{
}

int
PCM2G711Transformer::SetTraceLevel()
{
	long SystemMask = 0;
	if ((SystemMask = GetRegKeyLong(HKEY_CURRENT_USER, "Software\\Cisco Systems\\MTC\\Tracing", "AllComponents", 0x0)) == 0)
	{
		SystemMask = GetRegKeyLong(HKEY_CURRENT_USER, "Software\\Cisco Systems\\MTC\\Tracing", "PCM2G711Transformer", 0x100000);
	}
	tracer.SetSystemMask(SystemMask);
	return 0;
}

int
PCM2G711Transformer::SetALaw()
{
	g711Codec.SetALaw();
	return 0;
}

int
PCM2G711Transformer::SetULaw()
{
	g711Codec.SetULaw();
	return 0;
}

int
PCM2G711Transformer::TransformAudioSamples(std::vector<std::pair<AudioSample *, AudioSource *> > &data, AudioSample **ppAudioSample)
{
	int result = 0;
	AudioSample *outSample = NULL;
	AudioSample *inSample = NULL;
	if (data.size() > 0)
	{
		inSample = data[0].first;
	}

	if (inSample)
	{
		result = AudioSampleManager::GetInstance()->GetAudioSample(&outSample, this);

		if (outSample)
		{
			if (g711Codec.GetCodecType() == CODECTYPE_ULAW)
			{
				outSample->SetFormat(WaveFormat::GetWaveFormat(WaveFormat_ULaw));
			}
			else
			{
				outSample->SetFormat(WaveFormat::GetWaveFormat(WaveFormat_ALaw));
			}

			if (inSample->DataSize() <= 0)
			{
				outSample->SetSilenceDuration(inSample->GetSilenceDuration());
			}
			else
			{
				int outputSize = outSample->BufferSize();
				result = g711Codec.Encode(inSample->Data(), inSample->DataSize(), outSample->Data(), &outputSize);
				outSample->SetDataSize(outputSize);
			}
		}
		else
		{
			result = -10;
		}
	}
	*ppAudioSample = outSample;
	return result;
}