596 lines
17 KiB
C++
596 lines
17 KiB
C++
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/*****************************************************************************
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*
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* (C) COPYRIGHT MICROSOFT CORPORATION, 1999-2000
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*
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* TITLE: Transfer.cpp
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*
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* VERSION: 1.0
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*
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* AUTHOR: RickTu
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*
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* DATE: 9/10/99 RickTu
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* 2000/11/09 OrenR
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*
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* DESCRIPTION: This was originally in camera.cpp but was broken out for
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* clarity. The functions in this file are responsible for
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* transfering the image to the requesting application.
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*
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*****************************************************************************/
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#include <precomp.h>
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#pragma hdrstop
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#include <gphelper.h>
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using namespace Gdiplus;
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/*****************************************************************************
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CVideoStiUsd::DoBandedTransfer
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hand back the given bits in the specified chunk sizes
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*****************************************************************************/
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STDMETHODIMP
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CVideoStiUsd::DoBandedTransfer(MINIDRV_TRANSFER_CONTEXT *pTransCtx,
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PBYTE pSrc,
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LONG lBytesToTransfer)
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{
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HRESULT hr = E_FAIL;
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DBG_FN("CVideoStiUsd::DoBandedTransfer");
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//
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// Check for bad args
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//
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if ((pTransCtx == NULL) ||
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(pSrc == NULL) ||
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(lBytesToTransfer == 0))
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{
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hr = E_INVALIDARG;
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CHECK_S_OK2(hr, ("CVideoStiUsd::DoBandedTransfer, received "
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"NULL param"));
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return hr;
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}
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//
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// callback loop
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//
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LONG lTransferSize = 0;
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LONG lPercentComplete = 0;
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do
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{
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PBYTE pDst = pTransCtx->pTransferBuffer;
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//
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// transfer up to entire buffer size
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//
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lTransferSize = lBytesToTransfer;
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if (lBytesToTransfer > pTransCtx->lBufferSize)
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{
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lTransferSize = pTransCtx->lBufferSize;
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}
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//
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// copy data
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//
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DBG_TRC(("memcpy(src=0x%x,dst=0x%x,size=0x%x)",
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pDst,
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pSrc,
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lTransferSize));
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memcpy(pDst, pSrc, lTransferSize);
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lPercentComplete = 100 * (pTransCtx->cbOffset + lTransferSize);
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lPercentComplete /= pTransCtx->lItemSize;
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//
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// make callback
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//
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hr = pTransCtx->pIWiaMiniDrvCallBack->MiniDrvCallback(
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IT_MSG_DATA,
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IT_STATUS_TRANSFER_TO_CLIENT,
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lPercentComplete,
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pTransCtx->cbOffset,
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lTransferSize,
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pTransCtx,
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0);
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CHECK_S_OK2(hr,("pTransCtx->pWiaMiniDrvCallback->MiniDrvCallback"));
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DBG_TRC(("%d percent complete",lPercentComplete));
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//
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// inc pointers (redundant pointers here)
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//
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pSrc += lTransferSize;
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pTransCtx->cbOffset += lTransferSize;
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lBytesToTransfer -= lTransferSize;
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if (hr != S_OK)
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{
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break;
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}
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} while (lBytesToTransfer > 0);
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CHECK_S_OK(hr);
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return hr;
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}
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/*****************************************************************************
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CVideoStiUsd::DoTransfer
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Transfers the given bits all at once
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*****************************************************************************/
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STDMETHODIMP
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CVideoStiUsd::DoTransfer(MINIDRV_TRANSFER_CONTEXT *pTransCtx,
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PBYTE pSrc,
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LONG lBytesToTransfer)
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{
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HRESULT hr = E_FAIL;
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DBG_FN("CVideoStiUsd::DoTransfer");
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//
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// Check for bad args
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//
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if ((pTransCtx == NULL) ||
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(pSrc == NULL) ||
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(lBytesToTransfer == 0))
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{
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hr = E_INVALIDARG;
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CHECK_S_OK2(hr, ("CVideoStiUsd::DoTransfer, received "
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"NULL param"));
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return hr;
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}
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if (lBytesToTransfer > (LONG)(pTransCtx->lBufferSize - pTransCtx->cbOffset))
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{
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DBG_TRC(("lBytesToTransfer = %d, (lBufferSize = %d) - "
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"(cbOffset = %d) is %d",
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lBytesToTransfer,
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pTransCtx->lBufferSize,
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pTransCtx->cbOffset,
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(pTransCtx->lBufferSize - pTransCtx->cbOffset)));
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DBG_ERR(("lBytesToTransfer is bigger than supplied buffer!"));
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hr = HRESULT_FROM_WIN32(ERROR_BUFFER_OVERFLOW);
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}
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else
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{
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//
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// Show 20% completion
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//
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if (pTransCtx->pIWiaMiniDrvCallBack)
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{
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pTransCtx->pIWiaMiniDrvCallBack->MiniDrvCallback(
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IT_MSG_STATUS,
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IT_STATUS_TRANSFER_FROM_DEVICE,
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(LONG)20, // Percentage Complete,
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0,
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0,
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pTransCtx,
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0);
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}
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PBYTE pDst = pTransCtx->pTransferBuffer;
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pDst += pTransCtx->cbOffset;
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//
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// copy the bits
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//
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memcpy(pDst, pSrc, lBytesToTransfer);
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hr = S_OK;
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// Since we are copying all the bits in one shot, any status
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// callback is just a simulation anyway. So lets give enough
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// increments to bring the progress dialog up to 100 %.
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if (pTransCtx->pIWiaMiniDrvCallBack)
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{
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// Show 60% completion
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pTransCtx->pIWiaMiniDrvCallBack->MiniDrvCallback(
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IT_MSG_STATUS,
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IT_STATUS_TRANSFER_FROM_DEVICE,
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(LONG)60, // Percentage Complete,
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0,
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0,
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pTransCtx,
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0);
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// Show 90% completion
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pTransCtx->pIWiaMiniDrvCallBack->MiniDrvCallback(
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IT_MSG_STATUS,
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IT_STATUS_TRANSFER_FROM_DEVICE,
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(LONG)90, // Percentage Complete,
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0,
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0,
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pTransCtx,
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0);
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// Show 99% completion
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pTransCtx->pIWiaMiniDrvCallBack->MiniDrvCallback(
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IT_MSG_STATUS,
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IT_STATUS_TRANSFER_FROM_DEVICE,
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(LONG)99, // Percentage Complete,
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0,
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0,
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pTransCtx,
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0);
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// Show 100% completion
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pTransCtx->pIWiaMiniDrvCallBack->MiniDrvCallback(
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IT_MSG_STATUS,
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IT_STATUS_TRANSFER_FROM_DEVICE,
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(LONG)100, // Percentage Complete,
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0,
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0,
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pTransCtx,
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0);
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}
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}
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CHECK_S_OK(hr);
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return hr;
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}
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/*****************************************************************************
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CVideoUsd::StreamJPEGBits
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Transfers the JPEG bits of a file
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*****************************************************************************/
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STDMETHODIMP
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CVideoStiUsd::StreamJPEGBits(STILLCAM_IMAGE_CONTEXT *pContext,
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MINIDRV_TRANSFER_CONTEXT *pTransCtx,
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BOOL bBanded)
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{
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HRESULT hr = E_FAIL;
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PBYTE pSrc = NULL;
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DBG_FN("CVideoStiUsd::StreamJPEGBits");
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//
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// Check for invalid args
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//
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if ((pContext == NULL) ||
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(pContext->pImage == NULL) ||
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(pTransCtx == NULL))
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{
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hr = E_INVALIDARG;
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CHECK_S_OK2(hr, ("CVideoStiUsd::StreamJPEGBits received NULL "
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"params"));
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return hr;
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}
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//
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// try to open mapping to disk file -- we will use this if it is a JPEG
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// file because we just want to stream the bits back.
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//
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CMappedView cmvImage(pContext->pImage->ActualImagePath(),
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0,
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OPEN_EXISTING);
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pSrc = cmvImage.Bits();
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if (pSrc)
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{
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//
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// We only handle 2GB of data (that's all WIA handles as well)
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//
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LARGE_INTEGER liSize = cmvImage.FileSize();
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LONG lBytes = liSize.LowPart;
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if (bBanded)
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{
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hr = DoBandedTransfer(pTransCtx, pSrc, lBytes);
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}
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else
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{
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hr = DoTransfer(pTransCtx, pSrc, lBytes);
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}
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}
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CHECK_S_OK(hr);
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return hr;
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}
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/*****************************************************************************
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CVideoStiUsd::StreamBMPBits
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Transfers the BMP bits of a file
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*****************************************************************************/
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STDMETHODIMP
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CVideoStiUsd::StreamBMPBits(STILLCAM_IMAGE_CONTEXT *pContext,
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MINIDRV_TRANSFER_CONTEXT *pTransCtx,
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BOOL bBanded)
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{
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DBG_FN("CVideoStiUsd::StreamBMPBits");
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//
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// Assume failure
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//
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HRESULT hr = E_FAIL;
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if ((pContext == NULL) ||
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(pContext->pImage == NULL) ||
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(pTransCtx == NULL))
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{
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hr = E_INVALIDARG;
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CHECK_S_OK2(hr, ("CVideoStiUsd::StreamBMPBits received NULL params"));
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return hr;
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}
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//
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// Open the file
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//
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Bitmap SourceBitmap(CSimpleStringConvert::WideString(
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CSimpleString(
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pContext->pImage->ActualImagePath())));
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if (Ok == SourceBitmap.GetLastStatus())
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{
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//
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// Get the image dimensions
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//
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UINT nSourceWidth = SourceBitmap.GetWidth();
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UINT nSourceHeight = SourceBitmap.GetHeight();
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if (nSourceWidth && nSourceHeight)
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{
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//
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// Create the target bitmap
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//
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Bitmap TargetBitmap( nSourceWidth, nSourceWidth );
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if (Ok == TargetBitmap.GetLastStatus())
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{
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//
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// Assume failure
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//
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bool bDrawSucceeded = false;
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//
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// Create a graphics object
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//
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Graphics *pGraphics = Graphics::FromImage(&TargetBitmap);
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if (pGraphics)
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{
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//
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// Make sure it is valid
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//
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if (pGraphics->GetLastStatus() == Ok)
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{
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//
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// Flip the image, if they asked for a BMP
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//
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if (pTransCtx->guidFormatID == WiaImgFmt_BMP)
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{
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//
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// Set up the parallelogram to flip the image
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//
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Point SourcePoints[3];
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SourcePoints[0].X = 0;
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SourcePoints[0].Y = nSourceHeight;
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SourcePoints[1].X = nSourceWidth;
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SourcePoints[1].Y = nSourceHeight;
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SourcePoints[2].X = 0;
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SourcePoints[2].Y = 0;
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//
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// Draw the image, flipped
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//
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if (pGraphics->DrawImage(&SourceBitmap,
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SourcePoints, 3) == Ok)
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{
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//
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// We've got a good target image
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//
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bDrawSucceeded = true;
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}
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}
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else
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{
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//
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// Draw the image normally
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|
//
|
||
|
|
if (pGraphics->DrawImage(&SourceBitmap,0,0) == Ok)
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// We've got a good target image
|
||
|
|
//
|
||
|
|
bDrawSucceeded = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//
|
||
|
|
// Clean up our dynamically allocated graphics
|
||
|
|
//
|
||
|
|
delete pGraphics;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (bDrawSucceeded)
|
||
|
|
{
|
||
|
|
Rect rcTarget( 0, 0, nSourceWidth, nSourceHeight );
|
||
|
|
Gdiplus::BitmapData BitmapData;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Get to the bits of the image
|
||
|
|
//
|
||
|
|
if (Ok == TargetBitmap.LockBits(&rcTarget,
|
||
|
|
ImageLockModeRead,
|
||
|
|
PixelFormat24bppRGB,
|
||
|
|
&BitmapData))
|
||
|
|
{
|
||
|
|
if (bBanded)
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// This will be our return value
|
||
|
|
//
|
||
|
|
hr = DoBandedTransfer(
|
||
|
|
pTransCtx,
|
||
|
|
(PBYTE)BitmapData.Scan0,
|
||
|
|
(BitmapData.Stride * BitmapData.Height));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// This will be our return value
|
||
|
|
//
|
||
|
|
hr = DoTransfer(
|
||
|
|
pTransCtx,
|
||
|
|
(PBYTE)BitmapData.Scan0,
|
||
|
|
(BitmapData.Stride * BitmapData.Height));
|
||
|
|
}
|
||
|
|
|
||
|
|
TargetBitmap.UnlockBits( &BitmapData );
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
CHECK_S_OK(hr);
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/*****************************************************************************
|
||
|
|
|
||
|
|
CVideoUsd::LoadImageCB
|
||
|
|
|
||
|
|
Loads an image one piece at a time.
|
||
|
|
|
||
|
|
*****************************************************************************/
|
||
|
|
|
||
|
|
STDMETHODIMP
|
||
|
|
CVideoStiUsd::LoadImageCB(STILLCAM_IMAGE_CONTEXT *pContext,
|
||
|
|
MINIDRV_TRANSFER_CONTEXT *pTransCtx,
|
||
|
|
PLONG plDevErrVal)
|
||
|
|
{
|
||
|
|
HRESULT hr = E_FAIL;
|
||
|
|
|
||
|
|
DBG_FN("CVideoStiUsd::LoadImageCB");
|
||
|
|
|
||
|
|
//
|
||
|
|
// verify parameters
|
||
|
|
//
|
||
|
|
|
||
|
|
if ((pContext == NULL) ||
|
||
|
|
(pContext->pImage == NULL) ||
|
||
|
|
(pTransCtx == NULL))
|
||
|
|
{
|
||
|
|
hr = E_INVALIDARG;
|
||
|
|
CHECK_S_OK2(hr, ("CVideoStiUsd::LoadImageCB received NULL params"));
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (pTransCtx->guidFormatID == WiaImgFmt_JPEG)
|
||
|
|
{
|
||
|
|
hr = StreamJPEGBits( pContext, pTransCtx, TRUE );
|
||
|
|
}
|
||
|
|
else if (pTransCtx->guidFormatID == WiaImgFmt_BMP)
|
||
|
|
{
|
||
|
|
hr = StreamBMPBits( pContext, pTransCtx, TRUE );
|
||
|
|
}
|
||
|
|
else if (pTransCtx->guidFormatID == WiaImgFmt_MEMORYBMP)
|
||
|
|
{
|
||
|
|
hr = StreamBMPBits( pContext, pTransCtx, TRUE );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
DBG_ERR(("Asking for unsupported format"));
|
||
|
|
return E_NOTIMPL;
|
||
|
|
}
|
||
|
|
|
||
|
|
CHECK_S_OK(hr);
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*****************************************************************************
|
||
|
|
|
||
|
|
CVideoStiUsd::LoadImage
|
||
|
|
|
||
|
|
Loads an image in a single transfer
|
||
|
|
|
||
|
|
*****************************************************************************/
|
||
|
|
|
||
|
|
STDMETHODIMP
|
||
|
|
CVideoStiUsd::LoadImage(STILLCAM_IMAGE_CONTEXT *pContext,
|
||
|
|
MINIDRV_TRANSFER_CONTEXT *pTransCtx,
|
||
|
|
PLONG plDevErrVal)
|
||
|
|
{
|
||
|
|
HRESULT hr = S_OK;
|
||
|
|
|
||
|
|
DBG_FN("CVideoStiUsd::LoadImage");
|
||
|
|
|
||
|
|
//
|
||
|
|
// verify some params
|
||
|
|
//
|
||
|
|
|
||
|
|
if ((pContext == NULL) ||
|
||
|
|
(pTransCtx == NULL))
|
||
|
|
{
|
||
|
|
hr = E_INVALIDARG;
|
||
|
|
CHECK_S_OK2(hr, ("CVideoStiUsd::LoadImage received NULL params"));
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ((pTransCtx->guidFormatID == WiaImgFmt_BMP))
|
||
|
|
{
|
||
|
|
hr = StreamBMPBits( pContext, pTransCtx, FALSE );
|
||
|
|
}
|
||
|
|
else if (pTransCtx->guidFormatID == WiaImgFmt_JPEG)
|
||
|
|
{
|
||
|
|
hr = StreamJPEGBits( pContext, pTransCtx, FALSE );
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
DBG_ERR(("Unsupported format"));
|
||
|
|
return E_NOTIMPL;
|
||
|
|
}
|
||
|
|
|
||
|
|
CHECK_S_OK(hr);
|
||
|
|
return hr;
|
||
|
|
}
|
||
|
|
|