Leaked source code of windows server 2003
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//==========================================================================;
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
// PURPOSE.
//
// Copyright (c) 1992 - 1998 Microsoft Corporation. All Rights Reserved.
//
//==========================================================================;
//
// This file handles all codec property sets
//
#include <strmini.h>
#include <ksmedia.h>
#include "codmain.h"
#include "coddebug.h"
//#define SETDISCOVERED
// CodecFiltering Property Set functions
// -------------------------------------------------------------------
/*
** CodecSetCodecGlobalProperty ()
**
** Handles Set operations on the Global Codec property set.
**
** Arguments:
**
** pSRB -
** Pointer to the HW_STREAM_REQUEST_BLOCK
**
** Returns:
**
** Side Effects: none
*/
VOID
CodecSetCodecGlobalProperty(
PHW_STREAM_REQUEST_BLOCK pSrb
)
{
PHW_DEVICE_EXTENSION pHwDevExt = (PHW_DEVICE_EXTENSION)pSrb->HwDeviceExtension;
PSTREAM_PROPERTY_DESCRIPTOR pSPD = pSrb->CommandData.PropertyInfo;
ULONG Id = pSPD->Property->Id; // index of the property
LONG nBytes = pSPD->PropertyOutputSize - sizeof(KSPROPERTY); // size of data supplied
ASSERT (nBytes >= sizeof (LONG));
switch (Id)
{
case KSPROPERTY_VBICODECFILTERING_SCANLINES_REQUESTED_BIT_ARRAY:
{
PKSPROPERTY_VBICODECFILTERING_SCANLINES_S Property =
(PKSPROPERTY_VBICODECFILTERING_SCANLINES_S) pSPD->PropertyInfo;
CDebugPrint(DebugLevelVerbose,
( CODECNAME ": CodecSetCodecGlobalProperty : KSPROPERTY_VBICODECFILTERING_SCANLINES_REQUESTED_BIT_ARRAY\n"));
nBytes = min( nBytes, sizeof(pHwDevExt->ScanlinesRequested ) );
RtlCopyMemory( &pHwDevExt->ScanlinesRequested, &Property->Scanlines, nBytes );
pSrb->ActualBytesTransferred = nBytes + sizeof(KSPROPERTY);
break;
}
#ifdef SETDISCOVERED
case KSPROPERTY_VBICODECFILTERING_SCANLINES_DISCOVERED_BIT_ARRAY:
{
PKSPROPERTY_VBICODECFILTERING_SCANLINES_S Property =
(PKSPROPERTY_VBICODECFILTERING_SCANLINES_S) pSPD->PropertyInfo;
CDebugPrint(DebugLevelVerbose,
( CODECNAME ": CodecSetCodecGlobalProperty : KSPROPERTY_VBICODECFILTERING_SCANLINES_DISCOVERED_BIT_ARRAY\n"));
nBytes = min( nBytes, sizeof(pHwDevExt->ScanlinesDiscovered ) );
RtlCopyMemory( &pHwDevExt->ScanlinesDiscovered, &Property->Scanlines, nBytes );
pSrb->ActualBytesTransferred = nBytes + sizeof(KSPROPERTY);
break;
}
#endif // SETDISCOVERED
case KSPROPERTY_VBICODECFILTERING_SUBSTREAMS_REQUESTED_BIT_ARRAY:
{
PKSPROPERTY_VBICODECFILTERING_CC_SUBSTREAMS_S Property =
(PKSPROPERTY_VBICODECFILTERING_CC_SUBSTREAMS_S) pSPD->PropertyInfo;
CDebugPrint(DebugLevelVerbose,
( CODECNAME ": CodecSetCodecGlobalProperty : KSPROPERTY_VBICODECFILTERING_SUBSTREAMS_REQUESTED_BIT_ARRAY\n"));
nBytes = min( nBytes, sizeof(pHwDevExt->SubstreamsRequested ) );
RtlCopyMemory( &pHwDevExt->SubstreamsRequested, &Property->Substreams, nBytes );
pSrb->ActualBytesTransferred = nBytes + sizeof(KSPROPERTY);
break;
}
#ifdef SETDISCOVERED
case KSPROPERTY_VBICODECFILTERING_SUBSTREAMS_DISCOVERED_BIT_ARRAY:
{
PKSPROPERTY_VBICODECFILTERING_CC_SUBSTREAMS_S Property =
(PKSPROPERTY_VBICODECFILTERING_CC_SUBSTREAMS_S) pSPD->PropertyInfo;
CDebugPrint(DebugLevelVerbose,
( CODECNAME ": CodecSetCodecGlobalProperty : KSPROPERTY_VBICODECFILTERING_SUBSTREAMS_DISCOVERED_BIT_ARRAY\n"));
nBytes = min( nBytes, sizeof(pHwDevExt->SubstreamsDiscovered ) );
RtlCopyMemory( &pHwDevExt->SubstreamsDiscovered, &Property->Substreams, nBytes );
pSrb->ActualBytesTransferred = nBytes + sizeof(KSPROPERTY);
break;
}
#endif // SETDISCOVERED
case KSPROPERTY_VBICODECFILTERING_STATISTICS:
{
PKSPROPERTY_VBICODECFILTERING_STATISTICS_CC_S Property =
(PKSPROPERTY_VBICODECFILTERING_STATISTICS_CC_S) pSPD->PropertyInfo;
CDebugPrint(DebugLevelVerbose,
( CODECNAME ": CodecSetCodecGlobalProperty : KSPROPERTY_VBICODECFILTERING_STATISTICS\n"));
nBytes = min( nBytes, sizeof(pHwDevExt->Statistics ) );
RtlCopyMemory( &pHwDevExt->Statistics, &Property->Statistics, nBytes );
pSrb->ActualBytesTransferred = nBytes + sizeof(KSPROPERTY);
break;
}
default:
pSrb->Status = STATUS_NOT_IMPLEMENTED;
CDebugPrint(DebugLevelVerbose,
( CODECNAME ": CodecSetCodecGlobalProperty : Unknown Property Id=%d\n", Id));
CDEBUG_BREAK();
break;
}
}
/*
** CodecGetCodecGlobalProperty ()
**
** Handles Get operations on the Global Codec property set.
**
** Arguments:
**
** pSRB -
** Pointer to the HW_STREAM_REQUEST_BLOCK
**
** Returns:
**
** Side Effects: none
*/
VOID
CodecGetCodecGlobalProperty(
PHW_STREAM_REQUEST_BLOCK pSrb
)
{
PHW_DEVICE_EXTENSION pHwDevExt = ((PHW_DEVICE_EXTENSION)pSrb->HwDeviceExtension);
PSTREAM_PROPERTY_DESCRIPTOR pSPD = pSrb->CommandData.PropertyInfo;
ULONG Id = pSPD->Property->Id; // index of the property
LONG nBytes = pSPD->PropertyOutputSize - sizeof(KSPROPERTY); // size of data supplied
ASSERT (nBytes >= sizeof (LONG));
switch (Id)
{
case KSPROPERTY_VBICODECFILTERING_SCANLINES_REQUESTED_BIT_ARRAY:
{
PKSPROPERTY_VBICODECFILTERING_SCANLINES_S Property =
(PKSPROPERTY_VBICODECFILTERING_SCANLINES_S) pSPD->PropertyInfo;
CDebugPrint(DebugLevelVerbose,
( CODECNAME ": CodecGetCodecGlobalProperty : KSPROPERTY_VBICODECFILTERING_SCANLINES_REQUESTED_BIT_ARRAY\n"));
nBytes = min( nBytes, sizeof(pHwDevExt->ScanlinesRequested ) );
RtlCopyMemory( &Property->Scanlines, &pHwDevExt->ScanlinesRequested, nBytes );
pSrb->ActualBytesTransferred = nBytes + sizeof(KSPROPERTY);
break;
}
case KSPROPERTY_VBICODECFILTERING_SCANLINES_DISCOVERED_BIT_ARRAY:
{
PKSPROPERTY_VBICODECFILTERING_SCANLINES_S Property =
(PKSPROPERTY_VBICODECFILTERING_SCANLINES_S) pSPD->PropertyInfo;
CDebugPrint(DebugLevelVerbose,
( CODECNAME ": CodecGetCodecGlobalProperty : KSPROPERTY_VBICODECFILTERING_SCANLINES_DISCOVERED_BIT_ARRAY\n"));
nBytes = min( nBytes, sizeof(pHwDevExt->ScanlinesDiscovered ) );
RtlCopyMemory( &Property->Scanlines, &pHwDevExt->ScanlinesDiscovered, nBytes );
// Clear the data after the read so that it's always "fresh"
RtlZeroMemory( &pHwDevExt->ScanlinesDiscovered, nBytes );
pSrb->ActualBytesTransferred = nBytes + sizeof(KSPROPERTY);
break;
}
case KSPROPERTY_VBICODECFILTERING_SUBSTREAMS_REQUESTED_BIT_ARRAY:
{
PKSPROPERTY_VBICODECFILTERING_CC_SUBSTREAMS_S Property =
(PKSPROPERTY_VBICODECFILTERING_CC_SUBSTREAMS_S) pSPD->PropertyInfo;
CDebugPrint(DebugLevelVerbose,
( CODECNAME ": CodecGetCodecGlobalProperty : KSPROPERTY_VBICODECFILTERING_SUBSTREAMS_REQUESTED_BIT_ARRAY\n"));
nBytes = min( nBytes, sizeof(pHwDevExt->SubstreamsRequested ) );
RtlCopyMemory( &Property->Substreams, &pHwDevExt->SubstreamsRequested, nBytes );
pSrb->ActualBytesTransferred = nBytes + sizeof(KSPROPERTY);
break;
}
case KSPROPERTY_VBICODECFILTERING_SUBSTREAMS_DISCOVERED_BIT_ARRAY:
{
PKSPROPERTY_VBICODECFILTERING_CC_SUBSTREAMS_S Property =
(PKSPROPERTY_VBICODECFILTERING_CC_SUBSTREAMS_S) pSPD->PropertyInfo;
CDebugPrint(DebugLevelVerbose,
( CODECNAME ": CodecGetCodecGlobalProperty : KSPROPERTY_VBICODECFILTERING_SUBSTREAMS_DISCOVERED_BIT_ARRAY\n"));
nBytes = min( nBytes, sizeof(pHwDevExt->SubstreamsDiscovered ) );
RtlCopyMemory( &Property->Substreams, &pHwDevExt->SubstreamsDiscovered, nBytes );
// Clear the data after the read so that it's always "fresh"
RtlZeroMemory( &pHwDevExt->SubstreamsDiscovered, nBytes );
pSrb->ActualBytesTransferred = nBytes + sizeof(KSPROPERTY);
break;
}
case KSPROPERTY_VBICODECFILTERING_STATISTICS:
{
PKSPROPERTY_VBICODECFILTERING_STATISTICS_CC_S Property =
(PKSPROPERTY_VBICODECFILTERING_STATISTICS_CC_S) pSPD->PropertyInfo;
CDebugPrint(DebugLevelVerbose,
( CODECNAME ": CodecGetCodecGlobalProperty : KSPROPERTY_VBICODECFILTERING_STATISTICS\n"));
nBytes = min( nBytes, sizeof(pHwDevExt->Statistics ) );
RtlCopyMemory( &Property->Statistics, &pHwDevExt->Statistics, nBytes );
pSrb->ActualBytesTransferred = nBytes + sizeof(KSPROPERTY);
break;
}
default:
pSrb->Status = STATUS_NOT_IMPLEMENTED;
CDebugPrint(DebugLevelVerbose,
( CODECNAME ": CodecGetCodecGlobalProperty : Unknown Property Id=%d\n", Id));
CDEBUG_BREAK();
break;
}
}
// -------------------------------------------------------------------
// General entry point for all get/set codec properties
// -------------------------------------------------------------------
/*
** CodecSetProperty ()
**
** Handles Set operations for all codec properties.
**
** Arguments:
**
** pSRB -
** Pointer to the HW_STREAM_REQUEST_BLOCK
**
** Returns:
**
** Side Effects: none
*/
VOID
STREAMAPI
CodecSetProperty(
PHW_STREAM_REQUEST_BLOCK pSrb
)
{
PSTREAM_PROPERTY_DESCRIPTOR pSPD = pSrb->CommandData.PropertyInfo;
if (IsEqualGUID( &KSPROPSETID_Connection, &pSPD->Property->Set))
{
// CodecSetConnectionProperty(pSrb);
}
else if (IsEqualGUID( &KSPROPSETID_VBICodecFiltering, &pSPD->Property->Set))
{
CodecSetCodecGlobalProperty(pSrb);
}
else
{
//
// We should never get here
//
CDEBUG_BREAK();
}
}
/*
** CodecGetProperty ()
**
** Handles Get operations for all codec properties.
**
** Arguments:
**
** pSRB -
** Pointer to the HW_STREAM_REQUEST_BLOCK
**
** Returns:
**
** Side Effects: none
*/
VOID
STREAMAPI
CodecGetProperty( PHW_STREAM_REQUEST_BLOCK pSrb )
{
PSTREAM_PROPERTY_DESCRIPTOR pSPD = pSrb->CommandData.PropertyInfo;
if (IsEqualGUID( &KSPROPSETID_Connection, &pSPD->Property->Set))
{
// CodecGetConnectionProperty(pSrb);
}
else if (IsEqualGUID( &KSPROPSETID_VBICodecFiltering, &pSPD->Property->Set))
{
CodecGetCodecGlobalProperty(pSrb);
}
else
{
//
// We should never get here
//
CDEBUG_BREAK();
}
}