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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#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 "ntstatus.h"
#include <assert.h>
WINE_DEFAULT_DEBUG_CHANNEL(quartz);
static const WCHAR wszOutputPinName[] = { 'O','u','t','p','u','t',0 };
/* see IAsyncReader::Request on MSDN for the explanation of this */
#define BYTES_FROM_MEDIATIME(time) ((time) / 10000000)
typedef struct AsyncReader
{
const struct IBaseFilterVtbl * lpVtbl;
const struct IFileSourceFilterVtbl * lpVtblFSF;
ULONG refCount;
FILTER_INFO filterInfo;
FILTER_STATE state;
CRITICAL_SECTION csFilter;
IPin * pOutputPin;
LPOLESTR pszFileName;
AM_MEDIA_TYPE * pmt;
} AsyncReader;
static const struct IBaseFilterVtbl AsyncReader_Vtbl;
static const struct IFileSourceFilterVtbl FileSource_Vtbl;
static const struct IAsyncReaderVtbl FileAsyncReader_Vtbl;
static HRESULT FileAsyncReader_Construct(HANDLE hFile, IBaseFilter * pBaseFilter, LPCRITICAL_SECTION pCritSec, IPin ** ppPin);
#define _IFileSourceFilter_Offset ((int)(&(((AsyncReader*)0)->lpVtblFSF)))
#define ICOM_THIS_From_IFileSourceFilter(impl, iface) impl* This = (impl*)(((char*)iface)-_IFileSourceFilter_Offset);
#define _IAsyncReader_Offset ((int)(&(((FileAsyncReader*)0)->lpVtblAR)))
#define ICOM_THIS_From_IAsyncReader(impl, iface) impl* This = (impl*)(((char*)iface)-_IAsyncReader_Offset);
static HRESULT process_extensions(HKEY hkeyExtensions, LPCOLESTR pszFileName, GUID * majorType, GUID * minorType)
{
/* FIXME: implement */
return E_NOTIMPL;
}
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';
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
return wHex - 'a' + 10;
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;
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 */
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;
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;
}
static HRESULT GetClassMediaFile(IAsyncReader * pReader, LPCOLESTR pszFileName, GUID * majorType, GUID * minorType)
{
HKEY hkeyMediaType = NULL;
HRESULT hr = S_OK;
BOOL bFound = FALSE;
WCHAR wszMediaType[] = {'M','e','d','i','a',' ','T','y','p','e',0};
CopyMemory(majorType, &GUID_NULL, sizeof(*majorType));
CopyMemory(minorType, &GUID_NULL, sizeof(*minorType));
hr = HRESULT_FROM_WIN32(RegOpenKeyExW(HKEY_CLASSES_ROOT, wszMediaType, 0, KEY_READ, &hkeyMediaType));
if (SUCCEEDED(hr))
{
DWORD indexMajor;
for (indexMajor = 0; !bFound; indexMajor++)
{
HKEY hkeyMajor;
WCHAR wszMajorKeyName[CHARS_IN_GUID];
DWORD dwKeyNameLength = sizeof(wszMajorKeyName) / sizeof(wszMajorKeyName[0]);
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) == S_OK)
bFound = TRUE;
}
else
{
DWORD indexMinor;
for (indexMinor = 0; !bFound; indexMinor++)
{
HKEY hkeyMinor;
WCHAR wszMinorKeyName[CHARS_IN_GUID];
DWORD dwMinorKeyNameLen = sizeof(wszMinorKeyName) / sizeof(wszMinorKeyName[0]);
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 */
const WCHAR wszSourceFilter[] = {'S','o','u','r','c','e',' ','F','i','l','t','e','r',0};
LONG temp;
if ((temp = RegEnumValueW(hkeyMinor, indexValue, wszValueName, &dwValueNameLen, NULL, &dwType, (LPBYTE)wszPatternString, &dwDataLen)) != ERROR_SUCCESS)
{
HeapFree(GetProcessHeap(), 0, wszPatternString);
break;
}
/* if it is not the source filter value */
if (strcmpW(wszValueName, wszSourceFilter))
{
if (process_pattern_string(wszPatternString, pReader) == S_OK)
{
if (SUCCEEDED(CLSIDFromString(wszMajorKeyName, majorType)) &&
SUCCEEDED(CLSIDFromString(wszMinorKeyName, minorType)))
bFound = TRUE;
}
}
HeapFree(GetProcessHeap(), 0, wszPatternString);
}
CloseHandle(hkeyMinor);
}
}
CloseHandle(hkeyMajor);
}
}
CloseHandle(hkeyMediaType);
if (SUCCEEDED(hr) && !bFound)
{
ERR("Media class not found\n");
hr = S_FALSE;
}
else if (bFound)
TRACE("Found file's class: major = %s, subtype = %s\n", qzdebugstr_guid(majorType), qzdebugstr_guid(minorType));
return hr;
}
HRESULT AsyncReader_create(IUnknown * pUnkOuter, LPVOID * ppv)
{
AsyncReader * pAsyncRead = CoTaskMemAlloc(sizeof(AsyncReader));
if (!pAsyncRead)
return E_OUTOFMEMORY;
pAsyncRead->lpVtbl = &AsyncReader_Vtbl;
pAsyncRead->lpVtblFSF = &FileSource_Vtbl;
pAsyncRead->refCount = 1;
pAsyncRead->filterInfo.achName[0] = '\0';
pAsyncRead->filterInfo.pGraph = NULL;
pAsyncRead->pOutputPin = NULL;
InitializeCriticalSection(&pAsyncRead->csFilter);
pAsyncRead->pszFileName = NULL;
pAsyncRead->pmt = NULL;
*ppv = (LPVOID)pAsyncRead;
TRACE("-- created at %p\n", pAsyncRead);
return S_OK;
}
/** IUnkown methods **/
static HRESULT WINAPI AsyncReader_QueryInterface(IBaseFilter * iface, REFIID riid, LPVOID * ppv)
{
ICOM_THIS(AsyncReader, iface);
TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
*ppv = NULL;
if (IsEqualIID(riid, &IID_IUnknown))
*ppv = (LPVOID)This;
else if (IsEqualIID(riid, &IID_IPersist))
*ppv = (LPVOID)This;
else if (IsEqualIID(riid, &IID_IMediaFilter))
*ppv = (LPVOID)This;
else if (IsEqualIID(riid, &IID_IBaseFilter))
*ppv = (LPVOID)This;
else if (IsEqualIID(riid, &IID_IFileSourceFilter))
*ppv = (LPVOID)(&This->lpVtblFSF);
if (*ppv)
{
IUnknown_AddRef((IUnknown *)(*ppv));
return S_OK;
}
FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
return E_NOINTERFACE;
}
static ULONG WINAPI AsyncReader_AddRef(IBaseFilter * iface)
{
ICOM_THIS(AsyncReader, iface);
TRACE("()\n");
return InterlockedIncrement(&This->refCount);
}
static ULONG WINAPI AsyncReader_Release(IBaseFilter * iface)
{
ICOM_THIS(AsyncReader, iface);
TRACE("()\n");
if (!InterlockedDecrement(&This->refCount))
{
if (This->pOutputPin)
IPin_Release(This->pOutputPin);
DeleteCriticalSection(&This->csFilter);
This->lpVtbl = NULL;
CoTaskMemFree(This);
return 0;
}
else
return This->refCount;
}
/** IPersist methods **/
static HRESULT WINAPI AsyncReader_GetClassID(IBaseFilter * iface, CLSID * pClsid)
{
TRACE("(%p)\n", pClsid);
*pClsid = CLSID_AsyncReader;
return S_OK;
}
/** IMediaFilter methods **/
static HRESULT WINAPI AsyncReader_Stop(IBaseFilter * iface)
{
ICOM_THIS(AsyncReader, iface);
TRACE("()\n");
This->state = State_Stopped;
return S_OK;
}
static HRESULT WINAPI AsyncReader_Pause(IBaseFilter * iface)
{
ICOM_THIS(AsyncReader, iface);
TRACE("()\n");
This->state = State_Paused;
return S_OK;
}
static HRESULT WINAPI AsyncReader_Run(IBaseFilter * iface, REFERENCE_TIME tStart)
{
ICOM_THIS(AsyncReader, iface);
TRACE("(%lx%08lx)\n", (ULONG)(tStart >> 32), (ULONG)tStart);
This->state = State_Running;
return S_OK;
}
static HRESULT WINAPI AsyncReader_GetState(IBaseFilter * iface, DWORD dwMilliSecsTimeout, FILTER_STATE *pState)
{
ICOM_THIS(AsyncReader, iface);
TRACE("(%lu, %p)\n", dwMilliSecsTimeout, pState);
*pState = This->state;
return S_OK;
}
static HRESULT WINAPI AsyncReader_SetSyncSource(IBaseFilter * iface, IReferenceClock *pClock)
{
/* ICOM_THIS(AsyncReader, iface);*/
TRACE("(%p)\n", pClock);
return S_OK;
}
static HRESULT WINAPI AsyncReader_GetSyncSource(IBaseFilter * iface, IReferenceClock **ppClock)
{
/* ICOM_THIS(AsyncReader, iface);*/
TRACE("(%p)\n", ppClock);
return S_OK;
}
/** IBaseFilter methods **/
static HRESULT WINAPI AsyncReader_EnumPins(IBaseFilter * iface, IEnumPins **ppEnum)
{
ENUMPINDETAILS epd;
ICOM_THIS(AsyncReader, iface);
TRACE("(%p)\n", ppEnum);
epd.cPins = This->pOutputPin ? 1 : 0;
epd.ppPins = &This->pOutputPin;
return IEnumPinsImpl_Construct(&epd, ppEnum);
}
static HRESULT WINAPI AsyncReader_FindPin(IBaseFilter * iface, LPCWSTR Id, IPin **ppPin)
{
FIXME("(%s, %p)\n", debugstr_w(Id), ppPin);
return E_NOTIMPL;
}
static HRESULT WINAPI AsyncReader_QueryFilterInfo(IBaseFilter * iface, FILTER_INFO *pInfo)
{
ICOM_THIS(AsyncReader, iface);
TRACE("(%p)\n", pInfo);
strcpyW(pInfo->achName, This->filterInfo.achName);
pInfo->pGraph = This->filterInfo.pGraph;
if (pInfo->pGraph)
IFilterGraph_AddRef(pInfo->pGraph);
return S_OK;
}
static HRESULT WINAPI AsyncReader_JoinFilterGraph(IBaseFilter * iface, IFilterGraph *pGraph, LPCWSTR pName)
{
ICOM_THIS(AsyncReader, iface);
TRACE("(%p, %s)\n", pGraph, debugstr_w(pName));
if (pName)
strcpyW(This->filterInfo.achName, pName);
else
*This->filterInfo.achName = 0;
This->filterInfo.pGraph = pGraph; /* NOTE: do NOT increase ref. count */
return S_OK;
}
static HRESULT WINAPI AsyncReader_QueryVendorInfo(IBaseFilter * iface, LPWSTR *pVendorInfo)
{
FIXME("(%p)\n", pVendorInfo);
return E_NOTIMPL;
}
static const IBaseFilterVtbl AsyncReader_Vtbl =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
AsyncReader_QueryInterface,
AsyncReader_AddRef,
AsyncReader_Release,
AsyncReader_GetClassID,
AsyncReader_Stop,
AsyncReader_Pause,
AsyncReader_Run,
AsyncReader_GetState,
AsyncReader_SetSyncSource,
AsyncReader_GetSyncSource,
AsyncReader_EnumPins,
AsyncReader_FindPin,
AsyncReader_QueryFilterInfo,
AsyncReader_JoinFilterGraph,
AsyncReader_QueryVendorInfo
};
static HRESULT WINAPI FileSource_QueryInterface(IFileSourceFilter * iface, REFIID riid, LPVOID * ppv)
{
ICOM_THIS_From_IFileSourceFilter(AsyncReader, iface);
return IBaseFilter_QueryInterface((IFileSourceFilter*)&This->lpVtbl, riid, ppv);
}
static ULONG WINAPI FileSource_AddRef(IFileSourceFilter * iface)
{
ICOM_THIS_From_IFileSourceFilter(AsyncReader, iface);
return IBaseFilter_AddRef((IFileSourceFilter*)&This->lpVtbl);
}
static ULONG WINAPI FileSource_Release(IFileSourceFilter * iface)
{
ICOM_THIS_From_IFileSourceFilter(AsyncReader, iface);
return IBaseFilter_Release((IFileSourceFilter*)&This->lpVtbl);
}
static HRESULT WINAPI FileSource_Load(IFileSourceFilter * iface, LPCOLESTR pszFileName, const AM_MEDIA_TYPE * pmt)
{
HRESULT hr;
HANDLE hFile;
IAsyncReader * pReader = NULL;
ICOM_THIS_From_IFileSourceFilter(AsyncReader, iface);
TRACE("(%s, %p)\n", debugstr_w(pszFileName), pmt);
/* 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, (IBaseFilter *)&This->lpVtbl, &This->csFilter, &This->pOutputPin);
if (SUCCEEDED(hr))
hr = IPin_QueryInterface(This->pOutputPin, &IID_IAsyncReader, (LPVOID *)&pReader);
/* store file name & media type */
if (SUCCEEDED(hr))
{
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;
memcpy(&This->pmt->formattype, &FORMAT_None, sizeof(FORMAT_None));
hr = GetClassMediaFile(pReader, pszFileName, &This->pmt->majortype, &This->pmt->subtype);
if (FAILED(hr))
{
CoTaskMemFree(This->pmt);
This->pmt = NULL;
}
}
else
CopyMediaType(This->pmt, pmt);
}
if (pReader)
IAsyncReader_Release(pReader);
if (FAILED(hr))
{
if (This->pOutputPin)
{
IPin_Release(This->pOutputPin);
This->pOutputPin = NULL;
}
if (This->pszFileName)
{
CoTaskMemFree(This->pszFileName);
This->pszFileName = NULL;
}
CloseHandle(hFile);
}
/* FIXME: check return codes */
return hr;
}
static HRESULT WINAPI FileSource_GetCurFile(IFileSourceFilter * iface, LPOLESTR * ppszFileName, AM_MEDIA_TYPE * pmt)
{
ICOM_THIS_From_IFileSourceFilter(AsyncReader, iface);
TRACE("(%p, %p)\n", ppszFileName, pmt);
/* 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 (This->pmt)
{
CopyMediaType(pmt, This->pmt);
}
else
ZeroMemory(pmt, sizeof(*pmt));
return S_OK;
}
static const IFileSourceFilterVtbl FileSource_Vtbl =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
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 */
struct DATAREQUEST * pNext; /* next data request in list */
} DATAREQUEST;
void queue(DATAREQUEST * pHead, DATAREQUEST * pItem)
{
DATAREQUEST * pCurrent;
for (pCurrent = pHead; pCurrent->pNext; pCurrent = pCurrent->pNext)
;
pCurrent->pNext = pItem;
}
typedef struct FileAsyncReader
{
OutputPin pin;
const struct IAsyncReaderVtbl * lpVtblAR;
HANDLE hFile;
HANDLE hEvent;
BOOL bFlushing;
DATAREQUEST * pHead; /* head of data request list */
CRITICAL_SECTION csList; /* critical section to protect operations on list */
} FileAsyncReader;
static HRESULT AcceptProcAFR(LPVOID iface, const AM_MEDIA_TYPE *pmt)
{
ICOM_THIS(AsyncReader, iface);
FIXME("(%p, %p)\n", iface, pmt);
if (IsEqualGUID(&pmt->majortype, &This->pmt->majortype) &&
IsEqualGUID(&pmt->subtype, &This->pmt->subtype) &&
IsEqualGUID(&pmt->formattype, &FORMAT_None))
return S_OK;
return S_FALSE;
}
/* overriden pin functions */
static HRESULT WINAPI FileAsyncReaderPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
{
ICOM_THIS(FileAsyncReader, iface);
TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
*ppv = NULL;
if (IsEqualIID(riid, &IID_IUnknown))
*ppv = (LPVOID)This;
else if (IsEqualIID(riid, &IID_IPin))
*ppv = (LPVOID)This;
else if (IsEqualIID(riid, &IID_IAsyncReader))
*ppv = (LPVOID)&This->lpVtblAR;
if (*ppv)
{
IUnknown_AddRef((IUnknown *)(*ppv));
return S_OK;
}
FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
return E_NOINTERFACE;
}
static ULONG WINAPI FileAsyncReaderPin_Release(IPin * iface)
{
ICOM_THIS(FileAsyncReader, iface);
TRACE("()\n");
if (!InterlockedDecrement(&This->pin.pin.refCount))
{
DATAREQUEST * pCurrent;
DATAREQUEST * pNext;
for (pCurrent = This->pHead; pCurrent; pCurrent = pNext)
{
pNext = pCurrent->pNext;
CoTaskMemFree(pCurrent);
}
CloseHandle(This->hFile);
CloseHandle(This->hEvent);
CoTaskMemFree(This);
return 0;
}
return This->pin.pin.refCount;
}
static HRESULT WINAPI FileAsyncReaderPin_EnumMediaTypes(IPin * iface, IEnumMediaTypes ** ppEnum)
{
ENUMMEDIADETAILS emd;
ICOM_THIS(FileAsyncReader, iface);
TRACE("(%p)\n", ppEnum);
emd.cMediaTypes = 1;
emd.pMediaTypes = ((AsyncReader *)This->pin.pin.pinInfo.pFilter)->pmt;
return IEnumMediaTypesImpl_Construct(&emd, ppEnum);
}
static HRESULT WINAPI FileAsyncReaderPin_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
{
HRESULT hr = S_OK;
ICOM_THIS(OutputPin, iface);
TRACE("(%p, %p)\n", pReceivePin, pmt);
dump_AM_MEDIA_TYPE(pmt);
/* If we try to connect to ourself, we will definitely deadlock.
* There are other cases where we could deadlock too, but this
* catches the obvious case */
assert(pReceivePin != iface);
EnterCriticalSection(This->pin.pCritSec);
{
/* if we have been a specific type to connect with, then we can either connect
* with that or fail. We cannot choose different AM_MEDIA_TYPE */
if (pmt && !IsEqualGUID(&pmt->majortype, &GUID_NULL) && !IsEqualGUID(&pmt->subtype, &GUID_NULL))
hr = This->pConnectSpecific(iface, pReceivePin, pmt);
else
{
/* negotiate media type */
IEnumMediaTypes * pEnumCandidates;
AM_MEDIA_TYPE * pmtCandidate; /* Candidate media type */
if (SUCCEEDED(IPin_EnumMediaTypes(iface, &pEnumCandidates)))
{
hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */
/* try this filter's media types first */
while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
{
if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
(This->pConnectSpecific(iface, pReceivePin, pmtCandidate) == S_OK))
{
hr = S_OK;
CoTaskMemFree(pmtCandidate);
break;
}
CoTaskMemFree(pmtCandidate);
}
IEnumMediaTypes_Release(pEnumCandidates);
}
/* then try receiver filter's media types */
if (hr != S_OK && SUCCEEDED(IPin_EnumMediaTypes(pReceivePin, &pEnumCandidates))) /* if we haven't already connected successfully */
{
while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
{
if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
(This->pConnectSpecific(iface, pReceivePin, pmtCandidate) == S_OK))
{
hr = S_OK;
CoTaskMemFree(pmtCandidate);
break;
}
CoTaskMemFree(pmtCandidate);
} /* while */
IEnumMediaTypes_Release(pEnumCandidates);
} /* if not found */
} /* if negotiate media type */
} /* if succeeded */
LeaveCriticalSection(This->pin.pCritSec);
TRACE("-- %lx\n", hr);
return hr;
}
static const IPinVtbl FileAsyncReaderPin_Vtbl =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
FileAsyncReaderPin_QueryInterface,
IPinImpl_AddRef,
FileAsyncReaderPin_Release,
FileAsyncReaderPin_Connect,
OutputPin_ReceiveConnection,
IPinImpl_Disconnect,
IPinImpl_ConnectedTo,
IPinImpl_ConnectionMediaType,
IPinImpl_QueryPinInfo,
IPinImpl_QueryDirection,
IPinImpl_QueryId,
IPinImpl_QueryAccept,
FileAsyncReaderPin_EnumMediaTypes,
IPinImpl_QueryInternalConnections,
OutputPin_EndOfStream,
OutputPin_BeginFlush,
OutputPin_EndFlush,
OutputPin_NewSegment
};
static HRESULT FileAsyncReader_Construct(HANDLE hFile, IBaseFilter * pBaseFilter, LPCRITICAL_SECTION pCritSec, IPin ** ppPin)
{
FileAsyncReader * pPinImpl;
PIN_INFO piOutput;
*ppPin = NULL;
pPinImpl = CoTaskMemAlloc(sizeof(*pPinImpl));
if (!pPinImpl)
return E_OUTOFMEMORY;
piOutput.dir = PINDIR_OUTPUT;
piOutput.pFilter = pBaseFilter;
strcpyW(piOutput.achName, wszOutputPinName);
if (SUCCEEDED(OutputPin_Init(&piOutput, pBaseFilter, AcceptProcAFR, pCritSec, &pPinImpl->pin)))
{
pPinImpl->pin.pin.lpVtbl = &FileAsyncReaderPin_Vtbl;
pPinImpl->lpVtblAR = &FileAsyncReader_Vtbl;
pPinImpl->hFile = hFile;
pPinImpl->hEvent = CreateEventW(NULL, 0, 0, NULL);
pPinImpl->bFlushing = FALSE;
pPinImpl->pHead = NULL;
*ppPin = (IPin *)(&pPinImpl->pin.pin.lpVtbl);
return S_OK;
}
return E_FAIL;
}
/* IAsyncReader */
static HRESULT WINAPI FileAsyncReader_QueryInterface(IAsyncReader * iface, REFIID riid, LPVOID * ppv)
{
ICOM_THIS_From_IAsyncReader(FileAsyncReader, iface);
return IPin_QueryInterface((IPin *)This, riid, ppv);
}
static ULONG WINAPI FileAsyncReader_AddRef(IAsyncReader * iface)
{
ICOM_THIS_From_IAsyncReader(FileAsyncReader, iface);
return IPin_AddRef((IPin *)This);
}
static ULONG WINAPI FileAsyncReader_Release(IAsyncReader * iface)
{
ICOM_THIS_From_IAsyncReader(FileAsyncReader, iface);
return IPin_Release((IPin *)This);
}
#define DEF_ALIGNMENT 1
static HRESULT WINAPI FileAsyncReader_RequestAllocator(IAsyncReader * iface, IMemAllocator * pPreferred, ALLOCATOR_PROPERTIES * pProps, IMemAllocator ** ppActual)
{
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)
{
ALLOCATOR_PROPERTIES PropsActual;
hr = IMemAllocator_SetProperties(pPreferred, pProps, &PropsActual);
/* FIXME: check we are still aligned */
if (SUCCEEDED(hr))
{
IMemAllocator_AddRef(pPreferred);
*ppActual = pPreferred;
TRACE("FileAsyncReader_RequestAllocator -- %lx\n", hr);
return S_OK;
}
}
pPreferred = NULL;
hr = CoCreateInstance(&CLSID_MemoryAllocator, NULL, CLSCTX_INPROC, &IID_IMemAllocator, (LPVOID *)&pPreferred);
if (SUCCEEDED(hr))
{
ALLOCATOR_PROPERTIES PropsActual;
hr = IMemAllocator_SetProperties(pPreferred, pProps, &PropsActual);
/* FIXME: check we are still aligned */
if (SUCCEEDED(hr))
{
IMemAllocator_AddRef(pPreferred);
*ppActual = pPreferred;
TRACE("FileAsyncReader_RequestAllocator -- %lx\n", hr);
return S_OK;
}
}
if (FAILED(hr))
{
*ppActual = NULL;
if (pPreferred)
IMemAllocator_Release(pPreferred);
}
TRACE("-- %lx\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)
{
REFERENCE_TIME Start;
REFERENCE_TIME Stop;
DATAREQUEST * pDataRq;
BYTE * pBuffer;
HRESULT hr = S_OK;
ICOM_THIS_From_IAsyncReader(FileAsyncReader, iface);
TRACE("(%p, %lx)\n", pSample, dwUser);
/* check flushing state */
if (This->bFlushing)
return VFW_E_WRONG_STATE;
if (!(pDataRq = CoTaskMemAlloc(sizeof(*pDataRq))))
hr = E_OUTOFMEMORY;
/* get start and stop positions in bytes */
if (SUCCEEDED(hr))
hr = IMediaSample_GetTime(pSample, &Start, &Stop);
if (SUCCEEDED(hr))
hr = IMediaSample_GetPointer(pSample, &pBuffer);
if (SUCCEEDED(hr))
{
DWORD dwLength = (DWORD) BYTES_FROM_MEDIATIME(Stop - Start);
pDataRq->ovl.Offset = (DWORD) BYTES_FROM_MEDIATIME(Start);
pDataRq->ovl.OffsetHigh = (DWORD)(BYTES_FROM_MEDIATIME(Start) >> (sizeof(DWORD) * 8));
pDataRq->ovl.hEvent = This->hEvent;
pDataRq->dwUserData = dwUser;
pDataRq->pNext = NULL;
/* 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;
EnterCriticalSection(&This->csList);
{
if (This->pHead)
/* adds data request to end of list */
queue(This->pHead, pDataRq);
else
This->pHead = pDataRq;
}
LeaveCriticalSection(&This->csList);
/* 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;
}
if (FAILED(hr) && pDataRq)
{
EnterCriticalSection(&This->csList);
{
DATAREQUEST * pCurrent;
for (pCurrent = This->pHead; pCurrent && pCurrent->pNext; pCurrent = pCurrent->pNext)
if (pCurrent->pNext == pDataRq)
{
pCurrent->pNext = pDataRq->pNext;
break;
}
}
LeaveCriticalSection(&This->csList);
CoTaskMemFree(pDataRq);
}
TRACE("-- %lx\n", hr);
return hr;
}
static HRESULT WINAPI FileAsyncReader_WaitForNext(IAsyncReader * iface, DWORD dwTimeout, IMediaSample ** ppSample, DWORD_PTR * pdwUser)
{
HRESULT hr = S_OK;
DATAREQUEST * pDataRq = NULL;
ICOM_THIS_From_IAsyncReader(FileAsyncReader, iface);
TRACE("(%lu, %p, %p)\n", dwTimeout, ppSample, pdwUser);
/* FIXME: we could do with improving this by waiting for an array of event handles
* and then determining which one finished and removing that from the list, otherwise
* we will end up waiting for longer than we should do, if a later request finishes
* before an earlier one */
*ppSample = NULL;
*pdwUser = 0;
/* we return immediately if flushing */
if (This->bFlushing)
hr = VFW_E_WRONG_STATE;
if (SUCCEEDED(hr))
{
/* wait for the read to finish or timeout */
if (WaitForSingleObject(This->hEvent, dwTimeout) == WAIT_TIMEOUT)
hr = VFW_E_TIMEOUT;
}
if (SUCCEEDED(hr))
{
EnterCriticalSection(&This->csList);
{
pDataRq = This->pHead;
if (pDataRq == NULL)
hr = E_FAIL;
else
This->pHead = pDataRq->pNext;
}
LeaveCriticalSection(&This->csList);
}
if (SUCCEEDED(hr))
{
DWORD dwBytes;
/* get any errors */
if (!GetOverlappedResult(This->hFile, &pDataRq->ovl, &dwBytes, TRUE))
hr = HRESULT_FROM_WIN32(GetLastError());
}
if (SUCCEEDED(hr))
{
*ppSample = pDataRq->pSample;
*pdwUser = pDataRq->dwUserData;
}
/* clean up */
if (pDataRq)
{
/* no need to close event handle since we will close it when the pin is destroyed */
CoTaskMemFree(pDataRq);
}
TRACE("-- %lx\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("-- %lx\n", hr);
return hr;
}
static HRESULT WINAPI FileAsyncReader_SyncRead(IAsyncReader * iface, LONGLONG llPosition, LONG lLength, BYTE * pBuffer)
{
OVERLAPPED ovl;
HRESULT hr = S_OK;
ICOM_THIS_From_IAsyncReader(FileAsyncReader, iface);
TRACE("(%lx%08lx, %ld, %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.Offset = (DWORD) llPosition;
ovl.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("-- %lx\n", hr);
return hr;
}
static HRESULT WINAPI FileAsyncReader_Length(IAsyncReader * iface, LONGLONG * pTotal, LONGLONG * pAvailable)
{
DWORD dwSizeLow;
DWORD dwSizeHigh;
ICOM_THIS_From_IAsyncReader(FileAsyncReader, 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)
{
ICOM_THIS_From_IAsyncReader(FileAsyncReader, iface);
TRACE("()\n");
This->bFlushing = TRUE;
CancelIo(This->hFile);
SetEvent(This->hEvent);
/* FIXME: free list */
return S_OK;
}
static HRESULT WINAPI FileAsyncReader_EndFlush(IAsyncReader * iface)
{
ICOM_THIS_From_IAsyncReader(FileAsyncReader, iface);
TRACE("()\n");
This->bFlushing = FALSE;
return S_OK;
}
static const IAsyncReaderVtbl FileAsyncReader_Vtbl =
{
ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
FileAsyncReader_QueryInterface,
FileAsyncReader_AddRef,
FileAsyncReader_Release,
FileAsyncReader_RequestAllocator,
FileAsyncReader_Request,
FileAsyncReader_WaitForNext,
FileAsyncReader_SyncReadAligned,
FileAsyncReader_SyncRead,
FileAsyncReader_Length,
FileAsyncReader_BeginFlush,
FileAsyncReader_EndFlush,
};
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