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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. *
* *
*****************************************************************************/
/// @file
/// Contains the definition of Driver class that implements an OpenNI driver,
/// which manages virtual OpenNI devices. Those devices read their data from
/// *.ONI files.
#include "PlayerDriver.h"
#include "XnLib.h"
#include "XnString.h"
#include "PlayerDevice.h"
namespace oni_file {
namespace driver = oni::driver;
namespace {
// A string that stores device vendor name.
const xnl::String kVendorString("PrimeSense, Ltd.");
const xnl::String kDeviceName("oni File");
} // namespace
PlayerDriver::PlayerDriver(OniDriverServices* pDriverServices)
: driver::DriverBase(pDriverServices), m_fileHandle(XN_INVALID_FILE_HANDLE)
{
}
driver::DeviceBase* PlayerDriver::deviceOpen(const char* strUri, const char* /*mode*/)
{
PlayerDevice* pDevice = XN_NEW(PlayerDevice, strUri);
if (pDevice == NULL)
{
return NULL;
}
pDevice->SetEOFEventCallback(EOFReached, this);
OniStatus rc = pDevice->Initialize();
if (rc != ONI_STATUS_OK)
{
XN_DELETE(pDevice);
return NULL;
}
return pDevice;
}
void PlayerDriver::deviceClose(oni::driver::DeviceBase* pDevice)
{
XN_DELETE(pDevice);
}
void PlayerDriver::shutdown()
{
}
OniStatus PlayerDriver::tryDevice(const char* strUri)
{
static XnPlayerInputStreamInterface inputInterface =
{
FileOpen,
FileRead,
NULL,
NULL,
FileClose,
NULL,
NULL,
};
// Store the file path.
m_filePath = strUri;
XnStatus rc = PlayerNode::ValidateStream(this, &inputInterface);
if (rc == XN_STATUS_OK)
{
OniDeviceInfo* pInfo = XN_NEW(OniDeviceInfo);
xnOSMemSet(pInfo, 0, sizeof(*pInfo));
xnOSStrCopy(pInfo->uri, strUri, ONI_MAX_STR);
xnOSStrCopy(pInfo->vendor, kVendorString.Data(), ONI_MAX_STR);
xnOSStrCopy(pInfo->name, kDeviceName.Data(), ONI_MAX_STR);
deviceConnected(pInfo);
return ONI_STATUS_OK;
}
return DriverBase::tryDevice(strUri);
}
XnStatus XN_CALLBACK_TYPE PlayerDriver::FileOpen(void* pCookie)
{
PlayerDriver* pThis = (PlayerDriver*)pCookie;
return xnOSOpenFile(pThis->m_filePath.Data(), XN_OS_FILE_READ, &pThis->m_fileHandle);
}
XnStatus XN_CALLBACK_TYPE PlayerDriver::FileRead(void* pCookie, void* pBuffer, XnUInt32 nSize, XnUInt32* pnBytesRead)
{
PlayerDriver* pThis = (PlayerDriver*)pCookie;
XnUInt32 bufferSize = nSize;
XnStatus rc = xnOSReadFile(pThis->m_fileHandle, pBuffer, &bufferSize);
*pnBytesRead = bufferSize;
return rc;
}
void XN_CALLBACK_TYPE PlayerDriver::FileClose(void* pCookie)
{
PlayerDriver* pThis = (PlayerDriver*)pCookie;
xnOSCloseFile(&pThis->m_fileHandle);
pThis->m_fileHandle = 0;
}
void XN_CALLBACK_TYPE PlayerDriver::EOFReached(void* pCookie, const char *strUri)
{
PlayerDriver* pThis = (PlayerDriver*)pCookie;
OniDeviceInfo* pInfo = XN_NEW(OniDeviceInfo);
xnOSMemSet(pInfo, 0, sizeof(*pInfo));
xnOSStrCopy(pInfo->uri, strUri, ONI_MAX_STR);
xnOSStrCopy(pInfo->vendor, kVendorString.Data(), ONI_MAX_STR);
xnOSStrCopy(pInfo->name, kDeviceName.Data(), ONI_MAX_STR);
pThis->deviceStateChanged(pInfo, ONI_DEVICE_STATE_EOF);
}
} // namespace oni_file
ONI_EXPORT_DRIVER(oni_file::PlayerDriver)
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