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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 "XnStreamDataInternal.h"
#include <XnOS.h>
#include <XnDDKStatus.h>
//---------------------------------------------------------------------------
// Code
//---------------------------------------------------------------------------
XN_DDK_API XnStatus XnStreamDataCreateNoBuffer(XnStreamData** ppStreamOutput, const XnChar* StreamName)
{
XN_VALIDATE_OUTPUT_PTR(ppStreamOutput);
// allocate struct
XN_VALIDATE_CALLOC(*ppStreamOutput, XnStreamData, 1);
XnStreamData* pStreamOutput = *ppStreamOutput;
// allocate internal data
pStreamOutput->pInternal = (XnStreamDataInternal*)xnOSCalloc(1, sizeof(XnStreamDataInternal));
if (pStreamOutput->pInternal == NULL)
{
XnStreamDataDestroy(ppStreamOutput);
return (XN_STATUS_ALLOC_FAILED);
}
// fill internal data
pStreamOutput->pInternal->bAllocated = FALSE;
pStreamOutput->pInternal->nAllocSize = 0;
pStreamOutput->pInternal->UpdateMode = XN_STREAM_DATA_UPDATE_AUTOMATICALLY;
pStreamOutput->pInternal->Callback = NULL;
pStreamOutput->pInternal->pLockedBuffer = NULL;
// take name
xnOSStrCopy(pStreamOutput->StreamName, StreamName, XN_DEVICE_MAX_STRING_LENGTH);
return (XN_STATUS_OK);
}
XN_DDK_API XnStatus XnStreamDataCreate(XnStreamData** ppStreamOutput, const XnChar* StreamName, XnUInt32 nAllocSize)
{
XnStatus nRetVal = XN_STATUS_OK;
nRetVal = XnStreamDataCreateNoBuffer(ppStreamOutput, StreamName);
XN_IS_STATUS_OK(nRetVal);
XnStreamData* pStreamOutput = *ppStreamOutput;
// allocate buffer
nRetVal = XnStreamDataUpdateSize(pStreamOutput, nAllocSize);
if (nRetVal != XN_STATUS_OK)
{
XnStreamDataDestroy(ppStreamOutput);
return nRetVal;
}
return (XN_STATUS_OK);
}
XN_DDK_API XnStatus XnStreamDataUpdateSize(XnStreamData* pStreamOutput, XnUInt32 nAllocSize)
{
XN_VALIDATE_INPUT_PTR(pStreamOutput);
// allocate new memory
void* pNew = xnOSMallocAligned(nAllocSize, XN_DEFAULT_MEM_ALIGN);
if (pNew == NULL)
return (XN_STATUS_ALLOC_FAILED);
// zero it
xnOSMemSet(pNew, 0, nAllocSize);
// free the buffer if it is allocated
XN_ALIGNED_FREE_AND_NULL(pStreamOutput->pData);
// and now set new buffer
pStreamOutput->pData = pNew;
// and size
pStreamOutput->pInternal->nAllocSize = nAllocSize;
pStreamOutput->pInternal->bAllocated = TRUE;
return XN_STATUS_OK;
}
XN_DDK_API XnStatus XnStreamDataDestroy(XnStreamData** ppStreamOutput)
{
XN_VALIDATE_INPUT_PTR(ppStreamOutput);
XnStreamData* pStreamOutput = *ppStreamOutput;
if (pStreamOutput != NULL)
{
// only free buffer if allocated
if (pStreamOutput->pInternal->nAllocSize != 0)
{
xnOSFreeAligned(pStreamOutput->pData);
}
pStreamOutput->pData = NULL;
XN_FREE_AND_NULL(pStreamOutput->pInternal);
XN_FREE_AND_NULL(*ppStreamOutput);
}
return (XN_STATUS_OK);
}
XN_DDK_API XnStatus XnStreamDataSetUpdateMode(XnStreamData* pStreamOutput, XnStreamDataUpdateMode UpdateMode, XnStreamOutputNotificationCallback Callback, void* pCallbackData)
{
XN_VALIDATE_INPUT_PTR(pStreamOutput);
if (UpdateMode == XN_STREAM_DATA_UPDATE_NOTIFY && Callback == NULL)
return XN_STATUS_DEVICE_BAD_PARAM;
pStreamOutput->pInternal->UpdateMode = UpdateMode;
pStreamOutput->pInternal->Callback = Callback;
pStreamOutput->pInternal->pCallbackData = pCallbackData;
return XN_STATUS_OK;
}
void XnStreamOutputCallCallbackFunction(XnStreamData* pStreamOutput, XnUInt32 nNeededSize)
{
if (pStreamOutput->pInternal->Callback != NULL)
{
pStreamOutput->pInternal->Callback(pStreamOutput, pStreamOutput->pInternal->pCallbackData, nNeededSize);
}
}
XN_DDK_API XnStatus XnStreamDataCheckSize(XnStreamData* pStreamOutput, XnUInt32 nNeededSize)
{
XnStatus nRetVal = XN_STATUS_OK;
XN_VALIDATE_INPUT_PTR(pStreamOutput);
// if not allocated, then nothing to check
if (!pStreamOutput->pInternal->bAllocated)
return (XN_STATUS_OK);
if (nNeededSize <= pStreamOutput->pInternal->nAllocSize)
return (XN_STATUS_OK);
// oh no! we don't have enough space
if (pStreamOutput->pInternal->UpdateMode == XN_STREAM_DATA_UPDATE_AUTOMATICALLY)
{
// reallocate
nRetVal = XnStreamDataUpdateSize(pStreamOutput, nNeededSize);
XN_IS_STATUS_OK(nRetVal);
// and call callback
XnStreamOutputCallCallbackFunction(pStreamOutput, nNeededSize);
return XN_STATUS_OK;
}
else if (pStreamOutput->pInternal->UpdateMode == XN_STREAM_DATA_UPDATE_NOTIFY)
{
// let client decide
XnStreamOutputCallCallbackFunction(pStreamOutput, nNeededSize);
// check if it was fixed
if (nNeededSize <= pStreamOutput->pInternal->nAllocSize)
return XN_STATUS_OK;
}
// if we got here, problem still exists
return XN_STATUS_STREAM_OUTPUT_BUFFER_TOO_SMALL;
}
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