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Sweden-Number/dlls/quartz/filesource.c

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/*
* File Source Filter
*
* Copyright 2003 Robert Shearman
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#include "quartz_private.h"
#include "wine/debug.h"
#include "wine/unicode.h"
#include "pin.h"
#include "uuids.h"
#include "vfwmsgs.h"
#include "winbase.h"
#include "winreg.h"
#include "shlwapi.h"
#include <assert.h>
WINE_DEFAULT_DEBUG_CHANNEL(quartz);
static const WCHAR wszOutputPinName[] = { 'O','u','t','p','u','t',0 };
typedef struct AsyncReader
{
BaseFilter filter;
IFileSourceFilter IFileSourceFilter_iface;
IAMFilterMiscFlags IAMFilterMiscFlags_iface;
IPin * pOutputPin;
LPOLESTR pszFileName;
AM_MEDIA_TYPE * pmt;
} AsyncReader;
static inline AsyncReader *impl_from_BaseFilter(BaseFilter *iface)
{
return CONTAINING_RECORD(iface, AsyncReader, filter);
}
static inline AsyncReader *impl_from_IBaseFilter(IBaseFilter *iface)
{
return CONTAINING_RECORD(iface, AsyncReader, filter.IBaseFilter_iface);
}
static inline AsyncReader *impl_from_IFileSourceFilter(IFileSourceFilter *iface)
{
return CONTAINING_RECORD(iface, AsyncReader, IFileSourceFilter_iface);
}
static inline AsyncReader *impl_from_IAMFilterMiscFlags(IAMFilterMiscFlags *iface)
{
return CONTAINING_RECORD(iface, AsyncReader, IAMFilterMiscFlags_iface);
}
static const IBaseFilterVtbl AsyncReader_Vtbl;
static const IFileSourceFilterVtbl FileSource_Vtbl;
static const IAsyncReaderVtbl FileAsyncReader_Vtbl;
static const IAMFilterMiscFlagsVtbl IAMFilterMiscFlags_Vtbl;
static HRESULT FileAsyncReader_Construct(HANDLE hFile, IBaseFilter * pBaseFilter, LPCRITICAL_SECTION pCritSec, IPin ** ppPin);
static const WCHAR mediatype_name[] = {
'M', 'e', 'd', 'i', 'a', ' ', 'T', 'y', 'p', 'e', 0 };
static const WCHAR subtype_name[] = {
'S', 'u', 'b', 't', 'y', 'p', 'e', 0 };
static const WCHAR source_filter_name[] = {
'S','o','u','r','c','e',' ','F','i','l','t','e','r',0};
static HRESULT process_extensions(HKEY hkeyExtensions, LPCOLESTR pszFileName, GUID * majorType, GUID * minorType, GUID * sourceFilter)
{
WCHAR *extension;
LONG l;
HKEY hsub;
WCHAR keying[39];
DWORD size;
if (!pszFileName)
return E_POINTER;
/* Get the part of the name that matters */
extension = PathFindExtensionW(pszFileName);
if (*extension != '.')
return E_FAIL;
l = RegOpenKeyExW(hkeyExtensions, extension, 0, KEY_READ, &hsub);
if (l)
return E_FAIL;
if (majorType)
{
size = sizeof(keying);
l = RegQueryValueExW(hsub, mediatype_name, NULL, NULL, (LPBYTE)keying, &size);
if (!l)
CLSIDFromString(keying, majorType);
}
if (minorType)
{
size = sizeof(keying);
if (!l)
l = RegQueryValueExW(hsub, subtype_name, NULL, NULL, (LPBYTE)keying, &size);
if (!l)
CLSIDFromString(keying, minorType);
}
if (sourceFilter)
{
size = sizeof(keying);
if (!l)
l = RegQueryValueExW(hsub, source_filter_name, NULL, NULL, (LPBYTE)keying, &size);
if (!l)
CLSIDFromString(keying, sourceFilter);
}
RegCloseKey(hsub);
if (!l)
return S_OK;
return E_FAIL;
}
static unsigned char byte_from_hex_char(WCHAR wHex)
{
switch (tolowerW(wHex))
{
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
return (wHex - '0') & 0xf;
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
return (wHex - 'a' + 10) & 0xf;
default:
return 0;
}
}
static HRESULT process_pattern_string(LPCWSTR wszPatternString, IAsyncReader * pReader)
{
ULONG ulOffset;
ULONG ulBytes;
BYTE * pbMask;
BYTE * pbValue;
BYTE * pbFile;
HRESULT hr = S_OK;
ULONG strpos;
TRACE("\t\tPattern string: %s\n", debugstr_w(wszPatternString));
/* format: "offset, bytestocompare, mask, value" */
ulOffset = strtolW(wszPatternString, NULL, 10);
if (!(wszPatternString = strchrW(wszPatternString, ',')))
return E_INVALIDARG;
wszPatternString++; /* skip ',' */
ulBytes = strtolW(wszPatternString, NULL, 10);
pbMask = HeapAlloc(GetProcessHeap(), 0, ulBytes);
pbValue = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, ulBytes);
pbFile = HeapAlloc(GetProcessHeap(), 0, ulBytes);
/* default mask is match everything */
memset(pbMask, 0xFF, ulBytes);
if (!(wszPatternString = strchrW(wszPatternString, ',')))
hr = E_INVALIDARG;
if (hr == S_OK)
{
wszPatternString++; /* skip ',' */
while (!isxdigitW(*wszPatternString) && (*wszPatternString != ',')) wszPatternString++;
for (strpos = 0; isxdigitW(*wszPatternString) && (strpos/2 < ulBytes); wszPatternString++, strpos++)
{
if ((strpos % 2) == 1) /* odd numbered position */
pbMask[strpos / 2] |= byte_from_hex_char(*wszPatternString);
else
pbMask[strpos / 2] = byte_from_hex_char(*wszPatternString) << 4;
}
if (!(wszPatternString = strchrW(wszPatternString, ',')))
hr = E_INVALIDARG;
else
wszPatternString++; /* skip ',' */
}
if (hr == S_OK)
{
for ( ; !isxdigitW(*wszPatternString) && (*wszPatternString != ','); wszPatternString++)
;
for (strpos = 0; isxdigitW(*wszPatternString) && (strpos/2 < ulBytes); wszPatternString++, strpos++)
{
if ((strpos % 2) == 1) /* odd numbered position */
pbValue[strpos / 2] |= byte_from_hex_char(*wszPatternString);
else
pbValue[strpos / 2] = byte_from_hex_char(*wszPatternString) << 4;
}
}
if (hr == S_OK)
hr = IAsyncReader_SyncRead(pReader, ulOffset, ulBytes, pbFile);
if (hr == S_OK)
{
ULONG i;
for (i = 0; i < ulBytes; i++)
if ((pbFile[i] & pbMask[i]) != pbValue[i])
{
hr = S_FALSE;
break;
}
}
HeapFree(GetProcessHeap(), 0, pbMask);
HeapFree(GetProcessHeap(), 0, pbValue);
HeapFree(GetProcessHeap(), 0, pbFile);
/* if we encountered no errors with this string, and there is a following tuple, then we
* have to match that as well to succeed */
if ((hr == S_OK) && (wszPatternString = strchrW(wszPatternString, ',')))
return process_pattern_string(wszPatternString + 1, pReader);
else
return hr;
}
HRESULT GetClassMediaFile(IAsyncReader * pReader, LPCOLESTR pszFileName, GUID * majorType, GUID * minorType, GUID * sourceFilter)
{
HKEY hkeyMediaType = NULL;
LONG lRet;
HRESULT hr = S_OK;
BOOL bFound = FALSE;
static const WCHAR wszMediaType[] = {'M','e','d','i','a',' ','T','y','p','e',0};
TRACE("(%p, %s, %p, %p)\n", pReader, debugstr_w(pszFileName), majorType, minorType);
if(majorType)
*majorType = GUID_NULL;
if(minorType)
*minorType = GUID_NULL;
if(sourceFilter)
*sourceFilter = GUID_NULL;
lRet = RegOpenKeyExW(HKEY_CLASSES_ROOT, wszMediaType, 0, KEY_READ, &hkeyMediaType);
hr = HRESULT_FROM_WIN32(lRet);
if (SUCCEEDED(hr))
{
DWORD indexMajor;
for (indexMajor = 0; !bFound; indexMajor++)
{
HKEY hkeyMajor;
WCHAR wszMajorKeyName[CHARS_IN_GUID];
DWORD dwKeyNameLength = sizeof(wszMajorKeyName) / sizeof(wszMajorKeyName[0]);
static const WCHAR wszExtensions[] = {'E','x','t','e','n','s','i','o','n','s',0};
if (RegEnumKeyExW(hkeyMediaType, indexMajor, wszMajorKeyName, &dwKeyNameLength, NULL, NULL, NULL, NULL) != ERROR_SUCCESS)
break;
if (RegOpenKeyExW(hkeyMediaType, wszMajorKeyName, 0, KEY_READ, &hkeyMajor) != ERROR_SUCCESS)
break;
TRACE("%s\n", debugstr_w(wszMajorKeyName));
if (!strcmpW(wszExtensions, wszMajorKeyName))
{
if (process_extensions(hkeyMajor, pszFileName, majorType, minorType, sourceFilter) == S_OK)
bFound = TRUE;
}
/* We need a reader interface to check bytes */
else if (pReader)
{
DWORD indexMinor;
for (indexMinor = 0; !bFound; indexMinor++)
{
HKEY hkeyMinor;
WCHAR wszMinorKeyName[CHARS_IN_GUID];
DWORD dwMinorKeyNameLen = sizeof(wszMinorKeyName) / sizeof(wszMinorKeyName[0]);
WCHAR wszSourceFilterKeyName[CHARS_IN_GUID];
DWORD dwSourceFilterKeyNameLen = sizeof(wszSourceFilterKeyName);
DWORD maxValueLen;
DWORD indexValue;
if (RegEnumKeyExW(hkeyMajor, indexMinor, wszMinorKeyName, &dwMinorKeyNameLen, NULL, NULL, NULL, NULL) != ERROR_SUCCESS)
break;
if (RegOpenKeyExW(hkeyMajor, wszMinorKeyName, 0, KEY_READ, &hkeyMinor) != ERROR_SUCCESS)
break;
TRACE("\t%s\n", debugstr_w(wszMinorKeyName));
if (RegQueryInfoKeyW(hkeyMinor, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, &maxValueLen, NULL, NULL) != ERROR_SUCCESS)
break;
for (indexValue = 0; !bFound; indexValue++)
{
DWORD dwType;
WCHAR wszValueName[14]; /* longest name we should encounter will be "Source Filter" */
LPWSTR wszPatternString = HeapAlloc(GetProcessHeap(), 0, maxValueLen);
DWORD dwValueNameLen = sizeof(wszValueName) / sizeof(wszValueName[0]); /* remember this is in chars */
DWORD dwDataLen = maxValueLen; /* remember this is in bytes */
if (RegEnumValueW(hkeyMinor, indexValue, wszValueName, &dwValueNameLen, NULL, &dwType, (LPBYTE)wszPatternString, &dwDataLen) != ERROR_SUCCESS)
{
HeapFree(GetProcessHeap(), 0, wszPatternString);
break;
}
if (strcmpW(wszValueName, source_filter_name)==0) {
HeapFree(GetProcessHeap(), 0, wszPatternString);
continue;
}
/* if it is not the source filter value */
if (process_pattern_string(wszPatternString, pReader) == S_OK)
{
HeapFree(GetProcessHeap(), 0, wszPatternString);
if (majorType && FAILED(CLSIDFromString(wszMajorKeyName, majorType)))
break;
if (minorType && FAILED(CLSIDFromString(wszMinorKeyName, minorType)))
break;
if (sourceFilter)
{
/* Look up the source filter key */
if (RegQueryValueExW(hkeyMinor, source_filter_name, NULL, NULL, (LPBYTE)wszSourceFilterKeyName, &dwSourceFilterKeyNameLen))
break;
if (FAILED(CLSIDFromString(wszSourceFilterKeyName, sourceFilter)))
break;
}
bFound = TRUE;
} else
HeapFree(GetProcessHeap(), 0, wszPatternString);
}
CloseHandle(hkeyMinor);
}
}
CloseHandle(hkeyMajor);
}
}
CloseHandle(hkeyMediaType);
if (SUCCEEDED(hr) && !bFound)
{
ERR("Media class not found\n");
hr = E_FAIL;
}
else if (bFound)
{
TRACE("Found file's class:\n");
if(majorType)
TRACE("\tmajor = %s\n", qzdebugstr_guid(majorType));
if(minorType)
TRACE("\tsubtype = %s\n", qzdebugstr_guid(minorType));
if(sourceFilter)
TRACE("\tsource filter = %s\n", qzdebugstr_guid(sourceFilter));
}
return hr;
}
static IPin* WINAPI AsyncReader_GetPin(BaseFilter *iface, int pos)
{
AsyncReader *This = impl_from_BaseFilter(iface);
if (pos >= 1 || !This->pOutputPin)
return NULL;
IPin_AddRef(This->pOutputPin);
return This->pOutputPin;
}
static LONG WINAPI AsyncReader_GetPinCount(BaseFilter *iface)
{
AsyncReader *This = impl_from_BaseFilter(iface);
if (!This->pOutputPin)
return 0;
else
return 1;
}
static const BaseFilterFuncTable BaseFuncTable = {
AsyncReader_GetPin,
AsyncReader_GetPinCount
};
HRESULT AsyncReader_create(IUnknown * pUnkOuter, LPVOID * ppv)
{
AsyncReader *pAsyncRead;
if( pUnkOuter )
return CLASS_E_NOAGGREGATION;
pAsyncRead = CoTaskMemAlloc(sizeof(AsyncReader));
if (!pAsyncRead)
return E_OUTOFMEMORY;
BaseFilter_Init(&pAsyncRead->filter, &AsyncReader_Vtbl, &CLSID_AsyncReader, (DWORD_PTR)(__FILE__ ": AsyncReader.csFilter"), &BaseFuncTable);
pAsyncRead->IFileSourceFilter_iface.lpVtbl = &FileSource_Vtbl;
pAsyncRead->IAMFilterMiscFlags_iface.lpVtbl = &IAMFilterMiscFlags_Vtbl;
pAsyncRead->pOutputPin = NULL;
pAsyncRead->pszFileName = NULL;
pAsyncRead->pmt = NULL;
*ppv = pAsyncRead;
TRACE("-- created at %p\n", pAsyncRead);
return S_OK;
}
/** IUnknown methods **/
static HRESULT WINAPI AsyncReader_QueryInterface(IBaseFilter * iface, REFIID riid, LPVOID * ppv)
{
AsyncReader *This = impl_from_IBaseFilter(iface);
TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
*ppv = NULL;
if (IsEqualIID(riid, &IID_IUnknown))
*ppv = &This->filter.IBaseFilter_iface;
else if (IsEqualIID(riid, &IID_IPersist))
*ppv = &This->filter.IBaseFilter_iface;
else if (IsEqualIID(riid, &IID_IMediaFilter))
*ppv = &This->filter.IBaseFilter_iface;
else if (IsEqualIID(riid, &IID_IBaseFilter))
*ppv = &This->filter.IBaseFilter_iface;
else if (IsEqualIID(riid, &IID_IFileSourceFilter))
*ppv = &This->IFileSourceFilter_iface;
else if (IsEqualIID(riid, &IID_IAMFilterMiscFlags))
*ppv = &This->IAMFilterMiscFlags_iface;
if (*ppv)
{
IUnknown_AddRef((IUnknown *)(*ppv));
return S_OK;
}
if (!IsEqualIID(riid, &IID_IPin) && !IsEqualIID(riid, &IID_IMediaSeeking) &&
!IsEqualIID(riid, &IID_IVideoWindow) && !IsEqualIID(riid, &IID_IBasicAudio))
FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
return E_NOINTERFACE;
}
static ULONG WINAPI AsyncReader_Release(IBaseFilter * iface)
{
AsyncReader *This = impl_from_IBaseFilter(iface);
ULONG refCount = InterlockedDecrement(&This->filter.refCount);
TRACE("(%p)->() Release from %d\n", This, refCount + 1);
if (!refCount)
{
if (This->pOutputPin)
{
IPin *pConnectedTo;
if(SUCCEEDED(IPin_ConnectedTo(This->pOutputPin, &pConnectedTo)))
{
IPin_Disconnect(pConnectedTo);
IPin_Release(pConnectedTo);
}
IPin_Disconnect(This->pOutputPin);
IPin_Release(This->pOutputPin);
}
CoTaskMemFree(This->pszFileName);
if (This->pmt)
FreeMediaType(This->pmt);
BaseFilter_Destroy(&This->filter);
CoTaskMemFree(This);
return 0;
}
else
return refCount;
}
/** IMediaFilter methods **/
static HRESULT WINAPI AsyncReader_Stop(IBaseFilter * iface)
{
AsyncReader *This = impl_from_IBaseFilter(iface);
TRACE("()\n");
This->filter.state = State_Stopped;
return S_OK;
}
static HRESULT WINAPI AsyncReader_Pause(IBaseFilter * iface)
{
AsyncReader *This = impl_from_IBaseFilter(iface);
TRACE("()\n");
This->filter.state = State_Paused;
return S_OK;
}
static HRESULT WINAPI AsyncReader_Run(IBaseFilter * iface, REFERENCE_TIME tStart)
{
AsyncReader *This = impl_from_IBaseFilter(iface);
TRACE("(%x%08x)\n", (ULONG)(tStart >> 32), (ULONG)tStart);
This->filter.state = State_Running;
return S_OK;
}
/** IBaseFilter methods **/
static HRESULT WINAPI AsyncReader_FindPin(IBaseFilter * iface, LPCWSTR Id, IPin **ppPin)
{
AsyncReader *This = impl_from_IBaseFilter(iface);
TRACE("(%s, %p)\n", debugstr_w(Id), ppPin);
if (!Id || !ppPin)
return E_POINTER;
if (strcmpW(Id, wszOutputPinName))
{
*ppPin = NULL;
return VFW_E_NOT_FOUND;
}
*ppPin = This->pOutputPin;
IPin_AddRef(*ppPin);
return S_OK;
}
static const IBaseFilterVtbl AsyncReader_Vtbl =
{
AsyncReader_QueryInterface,
BaseFilterImpl_AddRef,
AsyncReader_Release,
BaseFilterImpl_GetClassID,
AsyncReader_Stop,
AsyncReader_Pause,
AsyncReader_Run,
BaseFilterImpl_GetState,
BaseFilterImpl_SetSyncSource,
BaseFilterImpl_GetSyncSource,
BaseFilterImpl_EnumPins,
AsyncReader_FindPin,
BaseFilterImpl_QueryFilterInfo,
BaseFilterImpl_JoinFilterGraph,
BaseFilterImpl_QueryVendorInfo
};
static HRESULT WINAPI FileSource_QueryInterface(IFileSourceFilter * iface, REFIID riid, LPVOID * ppv)
{
AsyncReader *This = impl_from_IFileSourceFilter(iface);
return IBaseFilter_QueryInterface(&This->filter.IBaseFilter_iface, riid, ppv);
}
static ULONG WINAPI FileSource_AddRef(IFileSourceFilter * iface)
{
AsyncReader *This = impl_from_IFileSourceFilter(iface);
return IBaseFilter_AddRef(&This->filter.IBaseFilter_iface);
}
static ULONG WINAPI FileSource_Release(IFileSourceFilter * iface)
{
AsyncReader *This = impl_from_IFileSourceFilter(iface);
return IBaseFilter_Release(&This->filter.IBaseFilter_iface);
}
static HRESULT WINAPI FileSource_Load(IFileSourceFilter * iface, LPCOLESTR pszFileName, const AM_MEDIA_TYPE * pmt)
{
HRESULT hr;
HANDLE hFile;
IAsyncReader * pReader = NULL;
AsyncReader *This = impl_from_IFileSourceFilter(iface);
TRACE("(%s, %p)\n", debugstr_w(pszFileName), pmt);
if (!pszFileName)
return E_POINTER;
/* open file */
/* FIXME: check the sharing values that native uses */
hFile = CreateFileW(pszFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL);
if (hFile == INVALID_HANDLE_VALUE)
{
return HRESULT_FROM_WIN32(GetLastError());
}
/* create pin */
hr = FileAsyncReader_Construct(hFile, &This->filter.IBaseFilter_iface, &This->filter.csFilter, &This->pOutputPin);
BaseFilterImpl_IncrementPinVersion(&This->filter);
if (SUCCEEDED(hr))
hr = IPin_QueryInterface(This->pOutputPin, &IID_IAsyncReader, (LPVOID *)&pReader);
/* store file name & media type */
if (SUCCEEDED(hr))
{
CoTaskMemFree(This->pszFileName);
if (This->pmt)
FreeMediaType(This->pmt);
This->pszFileName = CoTaskMemAlloc((strlenW(pszFileName) + 1) * sizeof(WCHAR));
strcpyW(This->pszFileName, pszFileName);
This->pmt = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE));
if (!pmt)
{
This->pmt->bFixedSizeSamples = TRUE;
This->pmt->bTemporalCompression = FALSE;
This->pmt->cbFormat = 0;
This->pmt->pbFormat = NULL;
This->pmt->pUnk = NULL;
This->pmt->lSampleSize = 0;
This->pmt->formattype = FORMAT_None;
hr = GetClassMediaFile(pReader, pszFileName, &This->pmt->majortype, &This->pmt->subtype, NULL);
if (FAILED(hr))
{
This->pmt->majortype = MEDIATYPE_Stream;
This->pmt->subtype = MEDIASUBTYPE_NULL;
hr = S_OK;
}
}
else
CopyMediaType(This->pmt, pmt);
}
if (pReader)
IAsyncReader_Release(pReader);
if (FAILED(hr))
{
if (This->pOutputPin)
{
IPin_Release(This->pOutputPin);
This->pOutputPin = NULL;
}
CoTaskMemFree(This->pszFileName);
if (This->pmt)
FreeMediaType(This->pmt);
This->pszFileName = NULL;
This->pmt = NULL;
CloseHandle(hFile);
}
/* FIXME: check return codes */
return hr;
}
static HRESULT WINAPI FileSource_GetCurFile(IFileSourceFilter * iface, LPOLESTR * ppszFileName, AM_MEDIA_TYPE * pmt)
{
AsyncReader *This = impl_from_IFileSourceFilter(iface);
TRACE("(%p, %p)\n", ppszFileName, pmt);
if (!ppszFileName)
return E_POINTER;
/* copy file name & media type if available, otherwise clear the outputs */
if (This->pszFileName)
{
*ppszFileName = CoTaskMemAlloc((strlenW(This->pszFileName) + 1) * sizeof(WCHAR));
strcpyW(*ppszFileName, This->pszFileName);
}
else
*ppszFileName = NULL;
if (pmt)
{
if (This->pmt)
CopyMediaType(pmt, This->pmt);
else
ZeroMemory(pmt, sizeof(*pmt));
}
return S_OK;
}
static const IFileSourceFilterVtbl FileSource_Vtbl =
{
FileSource_QueryInterface,
FileSource_AddRef,
FileSource_Release,
FileSource_Load,
FileSource_GetCurFile
};
/* the dwUserData passed back to user */
typedef struct DATAREQUEST
{
IMediaSample * pSample; /* sample passed to us by user */
DWORD_PTR dwUserData; /* user data passed to us */
OVERLAPPED ovl; /* our overlapped structure */
} DATAREQUEST;
typedef struct FileAsyncReader
{
BaseOutputPin pin;
IAsyncReader IAsyncReader_iface;
ALLOCATOR_PROPERTIES allocProps;
HANDLE hFile;
BOOL bFlushing;
/* Why would you need more? Every sample has its own handle */
LONG queued_number;
LONG samples;
LONG oldest_sample;
CRITICAL_SECTION csList; /* critical section to prevent concurrency issues */
DATAREQUEST *sample_list;
/* Have a handle for every sample, and then one more as flushing handle */
HANDLE *handle_list;
} FileAsyncReader;
static inline FileAsyncReader *impl_from_IPin(IPin *iface)
{
return CONTAINING_RECORD(iface, FileAsyncReader, pin.pin.IPin_iface);
}
static inline FileAsyncReader *impl_from_BasePin(BasePin *iface)
{
return CONTAINING_RECORD(iface, FileAsyncReader, pin.pin);
}
static inline FileAsyncReader *impl_from_BaseOutputPin(BaseOutputPin *iface)
{
return CONTAINING_RECORD(iface, FileAsyncReader, pin);
}
static inline BaseOutputPin *impl_BaseOutputPin_from_BasePin(BasePin *iface)
{
return CONTAINING_RECORD(iface, BaseOutputPin, pin);
}
static inline FileAsyncReader *impl_from_IAsyncReader(IAsyncReader *iface)
{
return CONTAINING_RECORD(iface, FileAsyncReader, IAsyncReader_iface);
}
static HRESULT WINAPI FileAsyncReaderPin_QueryAccept(IPin *iface, const AM_MEDIA_TYPE *pmt)
{
FileAsyncReader *This = impl_from_IPin(iface);
AM_MEDIA_TYPE *pmt_filter = impl_from_IBaseFilter(This->pin.pin.pinInfo.pFilter)->pmt;
FIXME("(%p, %p)\n", iface, pmt);
if (IsEqualGUID(&pmt->majortype, &pmt_filter->majortype) &&
IsEqualGUID(&pmt->subtype, &pmt_filter->subtype) &&
IsEqualGUID(&pmt->formattype, &FORMAT_None))
return S_OK;
return S_FALSE;
}
static HRESULT WINAPI FileAsyncReaderPin_GetMediaType(BasePin *iface, int iPosition, AM_MEDIA_TYPE *pmt)
{
FileAsyncReader *This = impl_from_BasePin(iface);
if (iPosition < 0)
return E_INVALIDARG;
if (iPosition > 0)
return VFW_S_NO_MORE_ITEMS;
CopyMediaType(pmt, impl_from_IBaseFilter(This->pin.pin.pinInfo.pFilter)->pmt);
return S_OK;
}
/* overridden pin functions */
static HRESULT WINAPI FileAsyncReaderPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
{
FileAsyncReader *This = impl_from_IPin(iface);
TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
*ppv = NULL;
if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IPin))
*ppv = &This->pin.pin.IPin_iface;
else if (IsEqualIID(riid, &IID_IAsyncReader))
*ppv = &This->IAsyncReader_iface;
if (*ppv)
{
IUnknown_AddRef((IUnknown *)*ppv);
return S_OK;
}
if (!IsEqualIID(riid, &IID_IMediaSeeking))
FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
return E_NOINTERFACE;
}
static ULONG WINAPI FileAsyncReaderPin_Release(IPin * iface)
{
FileAsyncReader *This = impl_from_IPin(iface);
ULONG refCount = InterlockedDecrement(&This->pin.pin.refCount);
int x;
TRACE("(%p)->() Release from %d\n", This, refCount + 1);
if (!refCount)
{
CoTaskMemFree(This->sample_list);
if (This->handle_list)
{
for (x = 0; x <= This->samples; ++x)
CloseHandle(This->handle_list[x]);
CoTaskMemFree(This->handle_list);
}
CloseHandle(This->hFile);
This->csList.DebugInfo->Spare[0] = 0;
DeleteCriticalSection(&This->csList);
BaseOutputPin_Destroy(&This->pin);
return 0;
}
return refCount;
}
static const IPinVtbl FileAsyncReaderPin_Vtbl =
{
FileAsyncReaderPin_QueryInterface,
BasePinImpl_AddRef,
FileAsyncReaderPin_Release,
BaseOutputPinImpl_Connect,
BaseOutputPinImpl_ReceiveConnection,
BasePinImpl_Disconnect,
BasePinImpl_ConnectedTo,
BasePinImpl_ConnectionMediaType,
BasePinImpl_QueryPinInfo,
BasePinImpl_QueryDirection,
BasePinImpl_QueryId,
FileAsyncReaderPin_QueryAccept,
BasePinImpl_EnumMediaTypes,
BasePinImpl_QueryInternalConnections,
BaseOutputPinImpl_EndOfStream,
BaseOutputPinImpl_BeginFlush,
BaseOutputPinImpl_EndFlush,
BasePinImpl_NewSegment
};
/* Function called as a helper to IPin_Connect */
/* specific AM_MEDIA_TYPE - it cannot be NULL */
/* this differs from standard OutputPin_AttemptConnection only in that it
* doesn't need the IMemInputPin interface on the receiving pin */
static HRESULT WINAPI FileAsyncReaderPin_AttemptConnection(BasePin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
{
BaseOutputPin *This = impl_BaseOutputPin_from_BasePin(iface);
HRESULT hr;
TRACE("(%p, %p)\n", pReceivePin, pmt);
dump_AM_MEDIA_TYPE(pmt);
/* FIXME: call queryacceptproc */
This->pin.pConnectedTo = pReceivePin;
IPin_AddRef(pReceivePin);
CopyMediaType(&This->pin.mtCurrent, pmt);
hr = IPin_ReceiveConnection(pReceivePin, &iface->IPin_iface, pmt);
if (FAILED(hr))
{
IPin_Release(This->pin.pConnectedTo);
This->pin.pConnectedTo = NULL;
FreeMediaType(&This->pin.mtCurrent);
}
TRACE(" -- %x\n", hr);
return hr;
}
static HRESULT WINAPI FileAsyncReaderPin_DecideBufferSize(BaseOutputPin *iface, IMemAllocator *pAlloc, ALLOCATOR_PROPERTIES *ppropInputRequest)
{
FileAsyncReader *This = impl_from_BaseOutputPin(iface);
ALLOCATOR_PROPERTIES actual;
if (ppropInputRequest->cbAlign && ppropInputRequest->cbAlign != This->allocProps.cbAlign)
FIXME("Requested Buffer cbAlign mismatch %i,%i\n",This->allocProps.cbAlign, ppropInputRequest->cbAlign);
if (ppropInputRequest->cbPrefix)
FIXME("Requested Buffer cbPrefix mismatch %i,%i\n",This->allocProps.cbPrefix, ppropInputRequest->cbPrefix);
if (ppropInputRequest->cbBuffer)
FIXME("Requested Buffer cbBuffer mismatch %i,%i\n",This->allocProps.cbBuffer, ppropInputRequest->cbBuffer);
if (ppropInputRequest->cBuffers)
FIXME("Requested Buffer cBuffers mismatch %i,%i\n",This->allocProps.cBuffers, ppropInputRequest->cBuffers);
return IMemAllocator_SetProperties(pAlloc, &This->allocProps, &actual);
}
static const BaseOutputPinFuncTable output_BaseOutputFuncTable = {
{
NULL,
FileAsyncReaderPin_AttemptConnection,
BasePinImpl_GetMediaTypeVersion,
FileAsyncReaderPin_GetMediaType
},
FileAsyncReaderPin_DecideBufferSize,
BaseOutputPinImpl_DecideAllocator,
BaseOutputPinImpl_BreakConnect
};
static HRESULT FileAsyncReader_Construct(HANDLE hFile, IBaseFilter * pBaseFilter, LPCRITICAL_SECTION pCritSec, IPin ** ppPin)
{
PIN_INFO piOutput;
HRESULT hr;
*ppPin = NULL;
piOutput.dir = PINDIR_OUTPUT;
piOutput.pFilter = pBaseFilter;
strcpyW(piOutput.achName, wszOutputPinName);
hr = BaseOutputPin_Construct(&FileAsyncReaderPin_Vtbl, sizeof(FileAsyncReader), &piOutput, &output_BaseOutputFuncTable, pCritSec, ppPin);
if (SUCCEEDED(hr))
{
FileAsyncReader *pPinImpl = (FileAsyncReader *)*ppPin;
pPinImpl->IAsyncReader_iface.lpVtbl = &FileAsyncReader_Vtbl;
pPinImpl->hFile = hFile;
pPinImpl->bFlushing = FALSE;
pPinImpl->sample_list = NULL;
pPinImpl->handle_list = NULL;
pPinImpl->queued_number = 0;
InitializeCriticalSection(&pPinImpl->csList);
pPinImpl->csList.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": FileAsyncReader.csList");
}
return hr;
}
/* IAsyncReader */
static HRESULT WINAPI FileAsyncReader_QueryInterface(IAsyncReader * iface, REFIID riid, LPVOID * ppv)
{
FileAsyncReader *This = impl_from_IAsyncReader(iface);
return IPin_QueryInterface(&This->pin.pin.IPin_iface, riid, ppv);
}
static ULONG WINAPI FileAsyncReader_AddRef(IAsyncReader * iface)
{
FileAsyncReader *This = impl_from_IAsyncReader(iface);
return IPin_AddRef(&This->pin.pin.IPin_iface);
}
static ULONG WINAPI FileAsyncReader_Release(IAsyncReader * iface)
{
FileAsyncReader *This = impl_from_IAsyncReader(iface);
return IPin_Release(&This->pin.pin.IPin_iface);
}
#define DEF_ALIGNMENT 1
static HRESULT WINAPI FileAsyncReader_RequestAllocator(IAsyncReader * iface, IMemAllocator * pPreferred, ALLOCATOR_PROPERTIES * pProps, IMemAllocator ** ppActual)
{
FileAsyncReader *This = impl_from_IAsyncReader(iface);
HRESULT hr = S_OK;
TRACE("(%p, %p, %p)\n", pPreferred, pProps, ppActual);
if (!pProps->cbAlign || (pProps->cbAlign % DEF_ALIGNMENT) != 0)
pProps->cbAlign = DEF_ALIGNMENT;
if (pPreferred)
{
hr = IMemAllocator_SetProperties(pPreferred, pProps, pProps);
/* FIXME: check we are still aligned */
if (SUCCEEDED(hr))
{
IMemAllocator_AddRef(pPreferred);
*ppActual = pPreferred;
TRACE("FileAsyncReader_RequestAllocator -- %x\n", hr);
goto done;
}
}
pPreferred = NULL;
hr = CoCreateInstance(&CLSID_MemoryAllocator, NULL, CLSCTX_INPROC, &IID_IMemAllocator, (LPVOID *)&pPreferred);
if (SUCCEEDED(hr))
{
hr = IMemAllocator_SetProperties(pPreferred, pProps, pProps);
/* FIXME: check we are still aligned */
if (SUCCEEDED(hr))
{
*ppActual = pPreferred;
TRACE("FileAsyncReader_RequestAllocator -- %x\n", hr);
}
}
done:
if (SUCCEEDED(hr))
{
CoTaskMemFree(This->sample_list);
if (This->handle_list)
{
int x;
for (x = 0; x <= This->samples; ++x)
CloseHandle(This->handle_list[x]);
CoTaskMemFree(This->handle_list);
}
This->samples = pProps->cBuffers;
This->oldest_sample = 0;
TRACE("Samples: %u\n", This->samples);
This->sample_list = CoTaskMemAlloc(sizeof(This->sample_list[0]) * pProps->cBuffers);
This->handle_list = CoTaskMemAlloc(sizeof(HANDLE) * pProps->cBuffers * 2);
if (This->sample_list && This->handle_list)
{
int x;
ZeroMemory(This->sample_list, sizeof(This->sample_list[0]) * pProps->cBuffers);
for (x = 0; x < This->samples; ++x)
{
This->sample_list[x].ovl.hEvent = This->handle_list[x] = CreateEventW(NULL, 0, 0, NULL);
if (x + 1 < This->samples)
This->handle_list[This->samples + 1 + x] = This->handle_list[x];
}
This->handle_list[This->samples] = CreateEventW(NULL, 1, 0, NULL);
This->allocProps = *pProps;
}
else
{
hr = E_OUTOFMEMORY;
CoTaskMemFree(This->sample_list);
CoTaskMemFree(This->handle_list);
This->samples = 0;
This->sample_list = NULL;
This->handle_list = NULL;
}
}
if (FAILED(hr))
{
*ppActual = NULL;
if (pPreferred)
IMemAllocator_Release(pPreferred);
}
TRACE("-- %x\n", hr);
return hr;
}
/* we could improve the Request/WaitForNext mechanism by allowing out of order samples.
* however, this would be quite complicated to do and may be a bit error prone */
static HRESULT WINAPI FileAsyncReader_Request(IAsyncReader * iface, IMediaSample * pSample, DWORD_PTR dwUser)
{
HRESULT hr = S_OK;
REFERENCE_TIME Start;
REFERENCE_TIME Stop;
FileAsyncReader *This = impl_from_IAsyncReader(iface);
LPBYTE pBuffer = NULL;
TRACE("(%p, %lx)\n", pSample, dwUser);
if (!pSample)
return E_POINTER;
/* get start and stop positions in bytes */
if (SUCCEEDED(hr))
hr = IMediaSample_GetTime(pSample, &Start, &Stop);
if (SUCCEEDED(hr))
hr = IMediaSample_GetPointer(pSample, &pBuffer);
EnterCriticalSection(&This->csList);
if (This->bFlushing)
{
LeaveCriticalSection(&This->csList);
return VFW_E_WRONG_STATE;
}
if (SUCCEEDED(hr))
{
DWORD dwLength = (DWORD) BYTES_FROM_MEDIATIME(Stop - Start);
DATAREQUEST *pDataRq;
int x;
/* Try to insert above the waiting sample if possible */
for (x = This->oldest_sample; x < This->samples; ++x)
{
if (!This->sample_list[x].pSample)
break;
}
if (x >= This->samples)
for (x = 0; x < This->oldest_sample; ++x)
{
if (!This->sample_list[x].pSample)
break;
}
/* There must be a sample we have found */
assert(x < This->samples);
++This->queued_number;
pDataRq = This->sample_list + x;
pDataRq->ovl.u.s.Offset = (DWORD) BYTES_FROM_MEDIATIME(Start);
pDataRq->ovl.u.s.OffsetHigh = (DWORD)(BYTES_FROM_MEDIATIME(Start) >> (sizeof(DWORD) * 8));
pDataRq->dwUserData = dwUser;
/* we violate traditional COM rules here by maintaining
* a reference to the sample, but not calling AddRef, but
* that's what MSDN says to do */
pDataRq->pSample = pSample;
/* this is definitely not how it is implemented on Win9x
* as they do not support async reads on files, but it is
* sooo much easier to use this than messing around with threads!
*/
if (!ReadFile(This->hFile, pBuffer, dwLength, NULL, &pDataRq->ovl))
hr = HRESULT_FROM_WIN32(GetLastError());
/* ERROR_IO_PENDING is not actually an error since this is what we want! */
if (hr == HRESULT_FROM_WIN32(ERROR_IO_PENDING))
hr = S_OK;
}
LeaveCriticalSection(&This->csList);
TRACE("-- %x\n", hr);
return hr;
}
static HRESULT WINAPI FileAsyncReader_WaitForNext(IAsyncReader * iface, DWORD dwTimeout, IMediaSample ** ppSample, DWORD_PTR * pdwUser)
{
HRESULT hr = S_OK;
FileAsyncReader *This = impl_from_IAsyncReader(iface);
DWORD buffer = ~0;
TRACE("(%u, %p, %p)\n", dwTimeout, ppSample, pdwUser);
*ppSample = NULL;
*pdwUser = 0;
EnterCriticalSection(&This->csList);
if (!This->bFlushing)
{
LONG oldest = This->oldest_sample;
if (!This->queued_number)
{
/* It could be that nothing is queued right now, but that can be fixed */
WARN("Called without samples in queue and not flushing!!\n");
}
LeaveCriticalSection(&This->csList);
/* wait for an object to read, or time out */
buffer = WaitForMultipleObjectsEx(This->samples+1, This->handle_list + oldest, FALSE, dwTimeout, TRUE);
EnterCriticalSection(&This->csList);
if (buffer <= This->samples)
{
/* Re-scale the buffer back to normal */
buffer += oldest;
/* Uh oh, we overshot the flusher handle, renormalize it back to 0..Samples-1 */
if (buffer > This->samples)
buffer -= This->samples + 1;
assert(buffer <= This->samples);
}
if (buffer >= This->samples)
{
if (buffer != This->samples)
{
FIXME("Returned: %u (%08x)\n", buffer, GetLastError());
hr = VFW_E_TIMEOUT;
}
else
hr = VFW_E_WRONG_STATE;
buffer = ~0;
}
else
--This->queued_number;
}
if (This->bFlushing && buffer == ~0)
{
for (buffer = 0; buffer < This->samples; ++buffer)
{
if (This->sample_list[buffer].pSample)
{
ResetEvent(This->handle_list[buffer]);
break;
}
}
if (buffer == This->samples)
{
assert(!This->queued_number);
hr = VFW_E_TIMEOUT;
}
else
{
--This->queued_number;
hr = S_OK;
}
}
if (SUCCEEDED(hr))
{
REFERENCE_TIME rtStart, rtStop;
REFERENCE_TIME rtSampleStart, rtSampleStop;
DATAREQUEST *pDataRq = This->sample_list + buffer;
DWORD dwBytes = 0;
/* get any errors */
if (!This->bFlushing && !GetOverlappedResult(This->hFile, &pDataRq->ovl, &dwBytes, FALSE))
hr = HRESULT_FROM_WIN32(GetLastError());
/* Return the sample no matter what so it can be destroyed */
*ppSample = pDataRq->pSample;
*pdwUser = pDataRq->dwUserData;
if (This->bFlushing)
hr = VFW_E_WRONG_STATE;
if (FAILED(hr))
dwBytes = 0;
/* Set the time on the sample */
IMediaSample_SetActualDataLength(pDataRq->pSample, dwBytes);
rtStart = (DWORD64)pDataRq->ovl.u.s.Offset + ((DWORD64)pDataRq->ovl.u.s.OffsetHigh << 32);
rtStart = MEDIATIME_FROM_BYTES(rtStart);
rtStop = rtStart + MEDIATIME_FROM_BYTES(dwBytes);
IMediaSample_GetTime(pDataRq->pSample, &rtSampleStart, &rtSampleStop);
assert(rtStart == rtSampleStart);
assert(rtStop <= rtSampleStop);
IMediaSample_SetTime(pDataRq->pSample, &rtStart, &rtStop);
assert(rtStart == rtSampleStart);
if (hr == S_OK)
assert(rtStop == rtSampleStop);
else
assert(rtStop == rtStart);
This->sample_list[buffer].pSample = NULL;
assert(This->oldest_sample < This->samples);
if (buffer == This->oldest_sample)
{
LONG x;
for (x = This->oldest_sample + 1; x < This->samples; ++x)
if (This->sample_list[x].pSample)
break;
if (x >= This->samples)
for (x = 0; x < This->oldest_sample; ++x)
if (This->sample_list[x].pSample)
break;
if (This->oldest_sample == x)
/* No samples found, reset to 0 */
x = 0;
This->oldest_sample = x;
}
}
LeaveCriticalSection(&This->csList);
TRACE("-- %x\n", hr);
return hr;
}
static HRESULT WINAPI FileAsyncReader_SyncRead(IAsyncReader * iface, LONGLONG llPosition, LONG lLength, BYTE * pBuffer);
static HRESULT WINAPI FileAsyncReader_SyncReadAligned(IAsyncReader * iface, IMediaSample * pSample)
{
BYTE * pBuffer;
REFERENCE_TIME tStart;
REFERENCE_TIME tStop;
HRESULT hr;
TRACE("(%p)\n", pSample);
hr = IMediaSample_GetTime(pSample, &tStart, &tStop);
if (SUCCEEDED(hr))
hr = IMediaSample_GetPointer(pSample, &pBuffer);
if (SUCCEEDED(hr))
hr = FileAsyncReader_SyncRead(iface,
BYTES_FROM_MEDIATIME(tStart),
(LONG) BYTES_FROM_MEDIATIME(tStop - tStart),
pBuffer);
TRACE("-- %x\n", hr);
return hr;
}
static HRESULT WINAPI FileAsyncReader_SyncRead(IAsyncReader * iface, LONGLONG llPosition, LONG lLength, BYTE * pBuffer)
{
OVERLAPPED ovl;
HRESULT hr = S_OK;
FileAsyncReader *This = impl_from_IAsyncReader(iface);
TRACE("(%x%08x, %d, %p)\n", (ULONG)(llPosition >> 32), (ULONG)llPosition, lLength, pBuffer);
ZeroMemory(&ovl, sizeof(ovl));
ovl.hEvent = CreateEventW(NULL, 0, 0, NULL);
/* NOTE: llPosition is the actual byte position to start reading from */
ovl.u.s.Offset = (DWORD) llPosition;
ovl.u.s.OffsetHigh = (DWORD) (llPosition >> (sizeof(DWORD) * 8));
if (!ReadFile(This->hFile, pBuffer, lLength, NULL, &ovl))
hr = HRESULT_FROM_WIN32(GetLastError());
if (hr == HRESULT_FROM_WIN32(ERROR_IO_PENDING))
hr = S_OK;
if (SUCCEEDED(hr))
{
DWORD dwBytesRead;
if (!GetOverlappedResult(This->hFile, &ovl, &dwBytesRead, TRUE))
hr = HRESULT_FROM_WIN32(GetLastError());
}
CloseHandle(ovl.hEvent);
TRACE("-- %x\n", hr);
return hr;
}
static HRESULT WINAPI FileAsyncReader_Length(IAsyncReader * iface, LONGLONG * pTotal, LONGLONG * pAvailable)
{
DWORD dwSizeLow;
DWORD dwSizeHigh;
FileAsyncReader *This = impl_from_IAsyncReader(iface);
TRACE("(%p, %p)\n", pTotal, pAvailable);
if (((dwSizeLow = GetFileSize(This->hFile, &dwSizeHigh)) == -1) &&
(GetLastError() != NO_ERROR))
return HRESULT_FROM_WIN32(GetLastError());
*pTotal = (LONGLONG)dwSizeLow | (LONGLONG)dwSizeHigh << (sizeof(DWORD) * 8);
*pAvailable = *pTotal;
return S_OK;
}
static HRESULT WINAPI FileAsyncReader_BeginFlush(IAsyncReader * iface)
{
FileAsyncReader *This = impl_from_IAsyncReader(iface);
TRACE("()\n");
EnterCriticalSection(&This->csList);
This->bFlushing = TRUE;
CancelIo(This->hFile);
SetEvent(This->handle_list[This->samples]);
LeaveCriticalSection(&This->csList);
return S_OK;
}
static HRESULT WINAPI FileAsyncReader_EndFlush(IAsyncReader * iface)
{
FileAsyncReader *This = impl_from_IAsyncReader(iface);
int x;
TRACE("()\n");
EnterCriticalSection(&This->csList);
ResetEvent(This->handle_list[This->samples]);
This->bFlushing = FALSE;
for (x = 0; x < This->samples; ++x)
assert(!This->sample_list[x].pSample);
LeaveCriticalSection(&This->csList);
return S_OK;
}
static const IAsyncReaderVtbl FileAsyncReader_Vtbl =
{
FileAsyncReader_QueryInterface,
FileAsyncReader_AddRef,
FileAsyncReader_Release,
FileAsyncReader_RequestAllocator,
FileAsyncReader_Request,
FileAsyncReader_WaitForNext,
FileAsyncReader_SyncReadAligned,
FileAsyncReader_SyncRead,
FileAsyncReader_Length,
FileAsyncReader_BeginFlush,
FileAsyncReader_EndFlush,
};
static HRESULT WINAPI AMFilterMiscFlags_QueryInterface(IAMFilterMiscFlags *iface, REFIID riid, void **ppv) {
AsyncReader *This = impl_from_IAMFilterMiscFlags(iface);
return IUnknown_QueryInterface((IUnknown*)This, riid, ppv);
}
static ULONG WINAPI AMFilterMiscFlags_AddRef(IAMFilterMiscFlags *iface) {
AsyncReader *This = impl_from_IAMFilterMiscFlags(iface);
return IUnknown_AddRef((IUnknown*)This);
}
static ULONG WINAPI AMFilterMiscFlags_Release(IAMFilterMiscFlags *iface) {
AsyncReader *This = impl_from_IAMFilterMiscFlags(iface);
return IUnknown_Release((IUnknown*)This);
}
static ULONG WINAPI AMFilterMiscFlags_GetMiscFlags(IAMFilterMiscFlags *iface) {
return AM_FILTER_MISC_FLAGS_IS_SOURCE;
}
static const IAMFilterMiscFlagsVtbl IAMFilterMiscFlags_Vtbl = {
AMFilterMiscFlags_QueryInterface,
AMFilterMiscFlags_AddRef,
AMFilterMiscFlags_Release,
AMFilterMiscFlags_GetMiscFlags
};
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