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/*****************************************************************************
* *
* OpenNI 2.x Alpha *
* Copyright (C) 2012 PrimeSense Ltd. *
* *
* This file is part of OpenNI. *
* *
* Licensed under the Apache License, Version 2.0 (the "License"); *
* you may not use this file except in compliance with the License. *
* You may obtain a copy of the License at *
* *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
* Unless required by applicable law or agreed to in writing, software *
* distributed under the License is distributed on an "AS IS" BASIS, *
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
* See the License for the specific language governing permissions and *
* limitations under the License. *
* *
*****************************************************************************/
//---------------------------------------------------------------------------
// 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, "SampleRate", XN_SAMPLE_RATE_48K),
m_NumberOfChannels(XN_STREAM_PROPERTY_NUMBER_OF_CHANNELS, "NumChannels", 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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