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/****************************************************************************
* *
* PrimeSense Sensor 5.x Alpha *
* Copyright (C) 2011 PrimeSense Ltd. *
* *
* This file is part of PrimeSense Sensor. *
* *
* PrimeSense Sensor is free software: you can redistribute it and/or modify*
* it under the terms of the GNU Lesser General Public License as published *
* by the Free Software Foundation, either version 3 of the License, or *
* (at your option) any later version. *
* *
* PrimeSense Sensor is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with PrimeSense Sensor. If not, see <http://www.gnu.org/licenses/>.*
* *
****************************************************************************/
//---------------------------------------------------------------------------
// Includes
//---------------------------------------------------------------------------
#include "XnAudioStream.h"
#include <XnOS.h>
//---------------------------------------------------------------------------
// Defines
//---------------------------------------------------------------------------
#define XN_AUDIO_STREAM_BUFFER_SIZE_IN_SECONDS 1.5
//---------------------------------------------------------------------------
// Code
//---------------------------------------------------------------------------
XnAudioStream::XnAudioStream(const XnChar* csName, XnUInt32 nMaxNumberOfChannels) :
XnStreamingStream(XN_STREAM_TYPE_AUDIO, csName),
m_SampleRate(XN_STREAM_PROPERTY_SAMPLE_RATE, XN_SAMPLE_RATE_48K),
m_NumberOfChannels(XN_STREAM_PROPERTY_NUMBER_OF_CHANNELS, 2),
m_nMaxNumberOfChannels(nMaxNumberOfChannels)
{
}
XnStatus XnAudioStream::Init()
{
XnStatus nRetVal = XN_STATUS_OK;
// init base
nRetVal = XnStreamingStream::Init();
XN_IS_STATUS_OK(nRetVal);
m_SampleRate.UpdateSetCallback(SetSampleRateCallback, this);
m_NumberOfChannels.UpdateSetCallback(SetNumberOfChannelsCallback, this);
XN_VALIDATE_ADD_PROPERTIES(this, &m_SampleRate, &m_NumberOfChannels);
// required size
nRetVal = RegisterRequiredSizeProperty(&m_SampleRate);
XN_IS_STATUS_OK(nRetVal);
return (XN_STATUS_OK);
}
XnStatus XnAudioStream::SetSampleRate(XnSampleRate nSampleRate)
{
XnStatus nRetVal = XN_STATUS_OK;
nRetVal = m_SampleRate.UnsafeUpdateValue(nSampleRate);
XN_IS_STATUS_OK(nRetVal);
return (XN_STATUS_OK);
}
XnStatus XnAudioStream::SetNumberOfChannels(XnUInt32 nNumberOfChannels)
{
XnStatus nRetVal = XN_STATUS_OK;
nRetVal = m_NumberOfChannels.UnsafeUpdateValue(nNumberOfChannels);
XN_IS_STATUS_OK(nRetVal);
return (XN_STATUS_OK);
}
XnStatus XnAudioStream::CalcRequiredSize(XnUInt32* pnRequiredSize) const
{
XnUInt32 nSampleSize = 2 * m_nMaxNumberOfChannels; // 16-bit per channel (2 bytes)
XnUInt32 nSamples = (XnUInt32)(GetSampleRate() * XN_AUDIO_STREAM_BUFFER_SIZE_IN_SECONDS);
*pnRequiredSize = nSamples * nSampleSize;
return (XN_STATUS_OK);
}
XnStatus XnAudioStream::SetSampleRateCallback(XnActualIntProperty* /*pSender*/, XnUInt64 nValue, void* pCookie)
{
XnAudioStream* pStream = (XnAudioStream*)pCookie;
return pStream->SetSampleRate((XnSampleRate)nValue);
}
XnStatus XnAudioStream::SetNumberOfChannelsCallback(XnActualIntProperty* /*pSender*/, XnUInt64 nValue, void* pCookie)
{
XnAudioStream* pStream = (XnAudioStream*)pCookie;
return pStream->SetNumberOfChannels((XnUInt32)nValue);
}
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