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wine-wine/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 "uuids.h"
#include "vfwmsgs.h"
#include "winbase.h"
#include "winreg.h"
#include "shlwapi.h"
#include <assert.h>
WINE_DEFAULT_DEBUG_CHANNEL(quartz);
static const AM_MEDIA_TYPE default_mt =
{
{0xe436eb83,0x524f,0x11ce,{0x9f,0x53,0x00,0x20,0xaf,0x0b,0xa7,0x70}}, /* MEDIATYPE_Stream */
{0,0,0,{0,0,0,0,0,0,0,0}},
TRUE,
FALSE,
1,
{0,0,0,{0,0,0,0,0,0,0,0}},
NULL,
0,
NULL
};
struct request
{
IMediaSample *sample;
DWORD_PTR cookie;
OVERLAPPED ovl;
};
struct async_reader
{
struct strmbase_filter filter;
IFileSourceFilter IFileSourceFilter_iface;
struct strmbase_source source;
IAsyncReader IAsyncReader_iface;
LPOLESTR pszFileName;
AM_MEDIA_TYPE mt;
HANDLE file, port, io_thread;
LARGE_INTEGER file_size;
CRITICAL_SECTION sample_cs;
BOOL flushing;
struct request *requests;
unsigned int max_requests;
CONDITION_VARIABLE sample_cv;
};
static const struct strmbase_source_ops source_ops;
static inline struct async_reader *impl_from_strmbase_filter(struct strmbase_filter *iface)
{
return CONTAINING_RECORD(iface, struct async_reader, filter);
}
static inline struct async_reader *impl_from_IFileSourceFilter(IFileSourceFilter *iface)
{
return CONTAINING_RECORD(iface, struct async_reader, IFileSourceFilter_iface);
}
static const IFileSourceFilterVtbl FileSource_Vtbl;
static const IAsyncReaderVtbl FileAsyncReader_Vtbl;
static int byte_from_hex_char(WCHAR c)
{
if ('0' <= c && c <= '9') return c - '0';
if ('a' <= c && c <= 'f') return c - 'a' + 10;
if ('A' <= c && c <= 'F') return c - 'A' + 10;
return -1;
}
static BOOL process_pattern_string(const WCHAR *pattern, HANDLE file)
{
ULONG size, offset, i, ret_size;
BYTE *mask, *expect, *actual;
int d;
BOOL ret = TRUE;
/* format: "offset, size, mask, value" */
offset = wcstol(pattern, NULL, 10);
if (!(pattern = wcschr(pattern, ',')))
return FALSE;
pattern++;
size = wcstol(pattern, NULL, 10);
mask = heap_alloc(size);
expect = heap_alloc(size);
memset(mask, 0xff, size);
if (!(pattern = wcschr(pattern, ',')))
{
heap_free(mask);
heap_free(expect);
return FALSE;
}
pattern++;
while (byte_from_hex_char(*pattern) == -1 && (*pattern != ','))
pattern++;
for (i = 0; (d = byte_from_hex_char(*pattern)) != -1 && (i/2 < size); pattern++, i++)
{
if (i % 2)
mask[i / 2] |= d;
else
mask[i / 2] = d << 4;
}
if (!(pattern = wcschr(pattern, ',')))
{
heap_free(mask);
heap_free(expect);
return FALSE;
}
pattern++;
while (byte_from_hex_char(*pattern) == -1 && (*pattern != ','))
pattern++;
for (i = 0; (d = byte_from_hex_char(*pattern)) != -1 && (i/2 < size); pattern++, i++)
{
if (i % 2)
expect[i / 2] |= d;
else
expect[i / 2] = d << 4;
}
actual = heap_alloc(size);
SetFilePointer(file, offset, NULL, FILE_BEGIN);
if (!ReadFile(file, actual, size, &ret_size, NULL) || ret_size != size)
{
heap_free(actual);
heap_free(expect);
heap_free(mask);
return FALSE;
}
for (i = 0; i < size; ++i)
{
if ((actual[i] & mask[i]) != expect[i])
{
ret = FALSE;
break;
}
}
heap_free(actual);
heap_free(expect);
heap_free(mask);
/* If there is a following tuple, then we must match that as well. */
if (ret && (pattern = wcschr(pattern, ',')))
return process_pattern_string(pattern + 1, file);
return ret;
}
BOOL get_media_type(const WCHAR *filename, GUID *majortype, GUID *subtype, GUID *source_clsid)
{
WCHAR extensions_path[278] = {'M','e','d','i','a',' ','T','y','p','e','\\','E','x','t','e','n','s','i','o','n','s','\\',0};
static const WCHAR wszExtensions[] = {'E','x','t','e','n','s','i','o','n','s',0};
static const WCHAR wszMediaType[] = {'M','e','d','i','a',' ','T','y','p','e',0};
DWORD majortype_idx, size;
const WCHAR *ext;
HKEY parent_key;
HANDLE file;
if ((ext = wcsrchr(filename, '.')))
{
WCHAR guidstr[39];
HKEY key;
wcscat(extensions_path, ext);
if (!RegOpenKeyExW(HKEY_CLASSES_ROOT, extensions_path, 0, KEY_READ, &key))
{
size = sizeof(guidstr);
if (majortype && !RegQueryValueExW(key, L"Media Type", NULL, NULL, (BYTE *)guidstr, &size))
CLSIDFromString(guidstr, majortype);
size = sizeof(guidstr);
if (subtype && !RegQueryValueExW(key, L"Subtype", NULL, NULL, (BYTE *)guidstr, &size))
CLSIDFromString(guidstr, subtype);
size = sizeof(guidstr);
if (source_clsid && !RegQueryValueExW(key, L"Source Filter", NULL, NULL, (BYTE *)guidstr, &size))
CLSIDFromString(guidstr, source_clsid);
RegCloseKey(key);
return FALSE;
}
}
if ((file = CreateFileW(filename, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
{
WARN("Failed to open file %s, error %u.\n", debugstr_w(filename), GetLastError());
return FALSE;
}
if (RegOpenKeyExW(HKEY_CLASSES_ROOT, wszMediaType, 0, KEY_READ, &parent_key))
{
CloseHandle(file);
return FALSE;
}
for (majortype_idx = 0; ; ++majortype_idx)
{
WCHAR majortype_str[39];
HKEY majortype_key;
DWORD subtype_idx;
size = ARRAY_SIZE(majortype_str);
if (RegEnumKeyExW(parent_key, majortype_idx, majortype_str, &size, NULL, NULL, NULL, NULL))
break;
if (!wcscmp(majortype_str, wszExtensions))
continue;
if (RegOpenKeyExW(parent_key, majortype_str, 0, KEY_READ, &majortype_key))
continue;
for (subtype_idx = 0; ; ++subtype_idx)
{
WCHAR subtype_str[39], *pattern;
DWORD value_idx, max_size;
HKEY subtype_key;
size = ARRAY_SIZE(subtype_str);
if (RegEnumKeyExW(majortype_key, subtype_idx, subtype_str, &size, NULL, NULL, NULL, NULL))
break;
if (RegOpenKeyExW(majortype_key, subtype_str, 0, KEY_READ, &subtype_key))
continue;
if (RegQueryInfoKeyW(subtype_key, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, &max_size, NULL, NULL))
continue;
pattern = heap_alloc(max_size);
for (value_idx = 0; ; ++value_idx)
{
/* The longest name we should encounter is "Source Filter". */
WCHAR value_name[14], source_clsid_str[39];
DWORD value_len = ARRAY_SIZE(value_name);
size = max_size;
if (RegEnumValueW(subtype_key, value_idx, value_name, &value_len,
NULL, NULL, (BYTE *)pattern, &max_size))
break;
if (!wcscmp(value_name, L"Source Filter"))
continue;
if (!process_pattern_string(pattern, file))
continue;
if (majortype)
CLSIDFromString(majortype_str, majortype);
if (subtype)
CLSIDFromString(subtype_str, subtype);
size = sizeof(source_clsid_str);
if (source_clsid && !RegQueryValueExW(subtype_key, L"Source Filter",
NULL, NULL, (BYTE *)source_clsid_str, &size))
CLSIDFromString(source_clsid_str, source_clsid);
heap_free(pattern);
RegCloseKey(subtype_key);
RegCloseKey(majortype_key);
RegCloseKey(parent_key);
CloseHandle(file);
return TRUE;
}
heap_free(pattern);
RegCloseKey(subtype_key);
}
RegCloseKey(majortype_key);
}
RegCloseKey(parent_key);
CloseHandle(file);
return FALSE;
}
static struct strmbase_pin *async_reader_get_pin(struct strmbase_filter *iface, unsigned int index)
{
struct async_reader *filter = impl_from_strmbase_filter(iface);
if (!index && filter->pszFileName)
return &filter->source.pin;
return NULL;
}
static void async_reader_destroy(struct strmbase_filter *iface)
{
struct async_reader *filter = impl_from_strmbase_filter(iface);
if (filter->pszFileName)
{
unsigned int i;
if (filter->source.pin.peer)
IPin_Disconnect(filter->source.pin.peer);
IPin_Disconnect(&filter->source.pin.IPin_iface);
if (filter->requests)
{
for (i = 0; i < filter->max_requests; ++i)
CloseHandle(filter->requests[i].ovl.hEvent);
free(filter->requests);
}
CloseHandle(filter->file);
filter->sample_cs.DebugInfo->Spare[0] = 0;
DeleteCriticalSection(&filter->sample_cs);
strmbase_source_cleanup(&filter->source);
CoTaskMemFree(filter->pszFileName);
FreeMediaType(&filter->mt);
}
PostQueuedCompletionStatus(filter->port, 0, 1, NULL);
WaitForSingleObject(filter->io_thread, INFINITE);
CloseHandle(filter->io_thread);
CloseHandle(filter->port);
strmbase_filter_cleanup(&filter->filter);
free(filter);
InterlockedDecrement(&object_locks);
}
static HRESULT async_reader_query_interface(struct strmbase_filter *iface, REFIID iid, void **out)
{
struct async_reader *filter = impl_from_strmbase_filter(iface);
if (IsEqualGUID(iid, &IID_IFileSourceFilter))
{
*out = &filter->IFileSourceFilter_iface;
IUnknown_AddRef((IUnknown *)*out);
return S_OK;
}
return E_NOINTERFACE;
}
static const struct strmbase_filter_ops filter_ops =
{
.filter_get_pin = async_reader_get_pin,
.filter_destroy = async_reader_destroy,
.filter_query_interface = async_reader_query_interface,
};
static DWORD CALLBACK io_thread(void *arg)
{
struct async_reader *filter = arg;
struct request *req;
OVERLAPPED *ovl;
ULONG_PTR key;
DWORD size;
BOOL ret;
for (;;)
{
ret = GetQueuedCompletionStatus(filter->port, &size, &key, &ovl, INFINITE);
if (ret && key)
break;
EnterCriticalSection(&filter->sample_cs);
req = CONTAINING_RECORD(ovl, struct request, ovl);
TRACE("Got sample %u.\n", req - filter->requests);
assert(req >= filter->requests && req < filter->requests + filter->max_requests);
if (ret)
WakeConditionVariable(&filter->sample_cv);
else
{
ERR("GetQueuedCompletionStatus() returned failure, error %u.\n", GetLastError());
req->sample = NULL;
}
LeaveCriticalSection(&filter->sample_cs);
}
return 0;
}
HRESULT async_reader_create(IUnknown *outer, IUnknown **out)
{
struct async_reader *object;
if (!(object = calloc(1, sizeof(*object))))
return E_OUTOFMEMORY;
strmbase_filter_init(&object->filter, outer, &CLSID_AsyncReader, &filter_ops);
object->IFileSourceFilter_iface.lpVtbl = &FileSource_Vtbl;
object->IAsyncReader_iface.lpVtbl = &FileAsyncReader_Vtbl;
InitializeCriticalSection(&object->sample_cs);
object->sample_cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": FileAsyncReader.sample_cs");
InitializeConditionVariable(&object->sample_cv);
object->port = CreateIoCompletionPort(INVALID_HANDLE_VALUE, NULL, 0, 0);
object->io_thread = CreateThread(NULL, 0, io_thread, object, 0, NULL);
TRACE("Created file source %p.\n", object);
*out = &object->filter.IUnknown_inner;
return S_OK;
}
static HRESULT WINAPI FileSource_QueryInterface(IFileSourceFilter * iface, REFIID riid, LPVOID * ppv)
{
struct async_reader *filter = impl_from_IFileSourceFilter(iface);
return IBaseFilter_QueryInterface(&filter->filter.IBaseFilter_iface, riid, ppv);
}
static ULONG WINAPI FileSource_AddRef(IFileSourceFilter * iface)
{
struct async_reader *filter = impl_from_IFileSourceFilter(iface);
return IBaseFilter_AddRef(&filter->filter.IBaseFilter_iface);
}
static ULONG WINAPI FileSource_Release(IFileSourceFilter * iface)
{
struct async_reader *filter = impl_from_IFileSourceFilter(iface);
return IBaseFilter_Release(&filter->filter.IBaseFilter_iface);
}
static HRESULT WINAPI FileSource_Load(IFileSourceFilter * iface, LPCOLESTR pszFileName, const AM_MEDIA_TYPE * pmt)
{
struct async_reader *This = impl_from_IFileSourceFilter(iface);
HANDLE hFile;
TRACE("%p->(%s, %p)\n", This, debugstr_w(pszFileName), pmt);
strmbase_dump_media_type(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());
}
if (!GetFileSizeEx(hFile, &This->file_size))
{
WARN("Could not get file size.\n");
return HRESULT_FROM_WIN32(GetLastError());
}
if (This->pszFileName)
{
free(This->pszFileName);
FreeMediaType(&This->mt);
}
if (!(This->pszFileName = wcsdup(pszFileName)))
{
CloseHandle(hFile);
return E_OUTOFMEMORY;
}
strmbase_source_init(&This->source, &This->filter, L"Output", &source_ops);
BaseFilterImpl_IncrementPinVersion(&This->filter);
This->file = hFile;
This->flushing = FALSE;
This->requests = NULL;
if (!pmt)
{
CopyMediaType(&This->mt, &default_mt);
if (get_media_type(pszFileName, &This->mt.majortype, &This->mt.subtype, NULL))
{
TRACE("Found major type %s, subtype %s.\n",
debugstr_guid(&This->mt.majortype), debugstr_guid(&This->mt.subtype));
}
}
else
CopyMediaType(&This->mt, pmt);
return S_OK;
}
static HRESULT WINAPI FileSource_GetCurFile(IFileSourceFilter *iface, LPOLESTR *ppszFileName, AM_MEDIA_TYPE *mt)
{
struct async_reader *This = impl_from_IFileSourceFilter(iface);
TRACE("filter %p, filename %p, mt %p.\n", This, ppszFileName, mt);
if (!ppszFileName)
return E_POINTER;
/* copy file name & media type if available, otherwise clear the outputs */
if (This->pszFileName)
{
*ppszFileName = CoTaskMemAlloc((wcslen(This->pszFileName) + 1) * sizeof(WCHAR));
wcscpy(*ppszFileName, This->pszFileName);
if (mt)
CopyMediaType(mt, &This->mt);
}
else
{
*ppszFileName = NULL;
if (mt)
memset(mt, 0, sizeof(AM_MEDIA_TYPE));
}
return S_OK;
}
static const IFileSourceFilterVtbl FileSource_Vtbl =
{
FileSource_QueryInterface,
FileSource_AddRef,
FileSource_Release,
FileSource_Load,
FileSource_GetCurFile
};
static inline struct async_reader *impl_from_strmbase_pin(struct strmbase_pin *iface)
{
return CONTAINING_RECORD(iface, struct async_reader, source.pin);
}
static inline struct async_reader *impl_from_IAsyncReader(IAsyncReader *iface)
{
return CONTAINING_RECORD(iface, struct async_reader, IAsyncReader_iface);
}
static HRESULT source_query_accept(struct strmbase_pin *iface, const AM_MEDIA_TYPE *mt)
{
struct async_reader *filter = impl_from_strmbase_pin(iface);
if (IsEqualGUID(&mt->majortype, &filter->mt.majortype)
&& (!IsEqualGUID(&mt->subtype, &GUID_NULL)
|| IsEqualGUID(&filter->mt.subtype, &GUID_NULL)))
return S_OK;
return S_FALSE;
}
static HRESULT source_get_media_type(struct strmbase_pin *iface, unsigned int index, AM_MEDIA_TYPE *mt)
{
struct async_reader *filter = impl_from_strmbase_pin(iface);
if (index > 1)
return VFW_S_NO_MORE_ITEMS;
if (index == 0)
CopyMediaType(mt, &filter->mt);
else if (index == 1)
CopyMediaType(mt, &default_mt);
return S_OK;
}
static HRESULT source_query_interface(struct strmbase_pin *iface, REFIID iid, void **out)
{
struct async_reader *filter = impl_from_strmbase_pin(iface);
if (IsEqualGUID(iid, &IID_IAsyncReader))
*out = &filter->IAsyncReader_iface;
else
return E_NOINTERFACE;
IUnknown_AddRef((IUnknown *)*out);
return S_OK;
}
/* 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(struct strmbase_source *This,
IPin *pReceivePin, const AM_MEDIA_TYPE *pmt)
{
HRESULT hr;
TRACE("%p->(%p, %p)\n", This, pReceivePin, pmt);
if (This->pin.ops->pin_query_accept(&This->pin, pmt) != S_OK)
return VFW_E_TYPE_NOT_ACCEPTED;
This->pin.peer = pReceivePin;
IPin_AddRef(pReceivePin);
CopyMediaType(&This->pin.mt, pmt);
hr = IPin_ReceiveConnection(pReceivePin, &This->pin.IPin_iface, pmt);
if (FAILED(hr))
{
IPin_Release(This->pin.peer);
This->pin.peer = NULL;
FreeMediaType(&This->pin.mt);
}
TRACE(" -- %x\n", hr);
return hr;
}
static const struct strmbase_source_ops source_ops =
{
.base.pin_query_accept = source_query_accept,
.base.pin_get_media_type = source_get_media_type,
.base.pin_query_interface = source_query_interface,
.pfnAttemptConnection = FileAsyncReaderPin_AttemptConnection,
};
static HRESULT WINAPI FileAsyncReader_QueryInterface(IAsyncReader *iface, REFIID iid, void **out)
{
struct async_reader *filter = impl_from_IAsyncReader(iface);
return IPin_QueryInterface(&filter->source.pin.IPin_iface, iid, out);
}
static ULONG WINAPI FileAsyncReader_AddRef(IAsyncReader * iface)
{
struct async_reader *filter = impl_from_IAsyncReader(iface);
return IPin_AddRef(&filter->source.pin.IPin_iface);
}
static ULONG WINAPI FileAsyncReader_Release(IAsyncReader * iface)
{
struct async_reader *filter = impl_from_IAsyncReader(iface);
return IPin_Release(&filter->source.pin.IPin_iface);
}
static HRESULT WINAPI FileAsyncReader_RequestAllocator(IAsyncReader *iface,
IMemAllocator *preferred, ALLOCATOR_PROPERTIES *props, IMemAllocator **ret_allocator)
{
struct async_reader *filter = impl_from_IAsyncReader(iface);
IMemAllocator *allocator;
unsigned int i;
HRESULT hr;
TRACE("filter %p, preferred %p, props %p, ret_allocator %p.\n", filter, preferred, props, ret_allocator);
if (!props->cbAlign)
props->cbAlign = 1;
*ret_allocator = NULL;
if (preferred)
IMemAllocator_AddRef(allocator = preferred);
else if (FAILED(hr = CoCreateInstance(&CLSID_MemoryAllocator, NULL,
CLSCTX_INPROC, &IID_IMemAllocator, (void **)&allocator)))
return hr;
if (FAILED(hr = IMemAllocator_SetProperties(allocator, props, props)))
{
IMemAllocator_Release(allocator);
return hr;
}
if (filter->requests)
{
for (i = 0; i < filter->max_requests; ++i)
CloseHandle(filter->requests[i].ovl.hEvent);
free(filter->requests);
}
filter->max_requests = props->cBuffers;
TRACE("Maximum request count: %u.\n", filter->max_requests);
if (!(filter->requests = calloc(filter->max_requests, sizeof(filter->requests[0]))))
{
IMemAllocator_Release(allocator);
return E_OUTOFMEMORY;
}
for (i = 0; i < filter->max_requests; ++i)
filter->requests[i].ovl.hEvent = CreateEventW(NULL, TRUE, FALSE, NULL);
*ret_allocator = allocator;
return S_OK;
}
static HRESULT WINAPI FileAsyncReader_Request(IAsyncReader *iface, IMediaSample *sample, DWORD_PTR cookie)
{
struct async_reader *filter = impl_from_IAsyncReader(iface);
REFERENCE_TIME start, end;
struct request *req;
unsigned int i;
HRESULT hr;
BYTE *data;
TRACE("filter %p, sample %p, cookie %#lx.\n", filter, sample, cookie);
if (!sample)
return E_POINTER;
if (FAILED(hr = IMediaSample_GetTime(sample, &start, &end)))
return hr;
if (BYTES_FROM_MEDIATIME(start) >= filter->file_size.QuadPart)
return HRESULT_FROM_WIN32(ERROR_HANDLE_EOF);
if (FAILED(hr = IMediaSample_GetPointer(sample, &data)))
return hr;
EnterCriticalSection(&filter->sample_cs);
if (filter->flushing)
{
LeaveCriticalSection(&filter->sample_cs);
return VFW_E_WRONG_STATE;
}
for (i = 0; i < filter->max_requests; ++i)
{
if (!filter->requests[i].sample)
break;
}
assert(i < filter->max_requests);
req = &filter->requests[i];
req->ovl.u.s.Offset = BYTES_FROM_MEDIATIME(start);
req->ovl.u.s.OffsetHigh = BYTES_FROM_MEDIATIME(start) >> 32;
/* No reference is taken. */
if (ReadFile(filter->file, data, BYTES_FROM_MEDIATIME(end - start), NULL, &req->ovl)
|| GetLastError() == ERROR_IO_PENDING)
{
hr = S_OK;
req->sample = sample;
req->cookie = cookie;
}
else
hr = HRESULT_FROM_WIN32(GetLastError());
LeaveCriticalSection(&filter->sample_cs);
return hr;
}
static HRESULT WINAPI FileAsyncReader_WaitForNext(IAsyncReader *iface,
DWORD timeout, IMediaSample **sample, DWORD_PTR *cookie)
{
struct async_reader *filter = impl_from_IAsyncReader(iface);
unsigned int i;
TRACE("filter %p, timeout %u, sample %p, cookie %p.\n", filter, timeout, sample, cookie);
*sample = NULL;
*cookie = 0;
EnterCriticalSection(&filter->sample_cs);
do
{
if (filter->flushing)
{
LeaveCriticalSection(&filter->sample_cs);
return VFW_E_WRONG_STATE;
}
for (i = 0; i < filter->max_requests; ++i)
{
struct request *req = &filter->requests[i];
DWORD size;
if (req->sample && GetOverlappedResult(filter->file, &req->ovl, &size, FALSE))
{
REFERENCE_TIME start, end;
IMediaSample_SetActualDataLength(req->sample, size);
start = MEDIATIME_FROM_BYTES(((ULONGLONG)req->ovl.u.s.OffsetHigh << 32) + req->ovl.u.s.Offset);
end = start + MEDIATIME_FROM_BYTES(size);
IMediaSample_SetTime(req->sample, &start, &end);
*sample = req->sample;
*cookie = req->cookie;
req->sample = NULL;
LeaveCriticalSection(&filter->sample_cs);
TRACE("Returning sample %u.\n", i);
return S_OK;
}
}
} while (SleepConditionVariableCS(&filter->sample_cv, &filter->sample_cs, timeout));
LeaveCriticalSection(&filter->sample_cs);
return VFW_E_TIMEOUT;
}
static BOOL sync_read(HANDLE file, LONGLONG offset, LONG length, BYTE *buffer, DWORD *read_len)
{
OVERLAPPED ovl = {0};
BOOL ret;
ovl.hEvent = (HANDLE)((ULONG_PTR)CreateEventW(NULL, TRUE, FALSE, NULL) | 1);
ovl.u.s.Offset = (DWORD)offset;
ovl.u.s.OffsetHigh = offset >> 32;
*read_len = 0;
ret = ReadFile(file, buffer, length, NULL, &ovl);
if (ret || GetLastError() == ERROR_IO_PENDING)
ret = GetOverlappedResult(file, &ovl, read_len, TRUE);
TRACE("Returning %u bytes.\n", *read_len);
CloseHandle(ovl.hEvent);
return ret;
}
static HRESULT WINAPI FileAsyncReader_SyncReadAligned(IAsyncReader *iface, IMediaSample *sample)
{
struct async_reader *filter = impl_from_IAsyncReader(iface);
REFERENCE_TIME start_time, end_time;
DWORD read_len;
BYTE *buffer;
LONG length;
HRESULT hr;
BOOL ret;
TRACE("filter %p, sample %p.\n", filter, sample);
hr = IMediaSample_GetTime(sample, &start_time, &end_time);
if (SUCCEEDED(hr))
hr = IMediaSample_GetPointer(sample, &buffer);
if (SUCCEEDED(hr))
{
length = BYTES_FROM_MEDIATIME(end_time - start_time);
ret = sync_read(filter->file, BYTES_FROM_MEDIATIME(start_time), length, buffer, &read_len);
if (ret)
hr = (read_len == length) ? S_OK : S_FALSE;
else if (GetLastError() == ERROR_HANDLE_EOF)
hr = S_OK;
else
hr = HRESULT_FROM_WIN32(GetLastError());
}
if (SUCCEEDED(hr))
IMediaSample_SetActualDataLength(sample, read_len);
return hr;
}
static HRESULT WINAPI FileAsyncReader_SyncRead(IAsyncReader *iface,
LONGLONG offset, LONG length, BYTE *buffer)
{
struct async_reader *filter = impl_from_IAsyncReader(iface);
DWORD read_len;
HRESULT hr;
BOOL ret;
TRACE("filter %p, offset %s, length %d, buffer %p.\n",
filter, wine_dbgstr_longlong(offset), length, buffer);
ret = sync_read(filter->file, offset, length, buffer, &read_len);
if (ret)
hr = (read_len == length) ? S_OK : S_FALSE;
else if (GetLastError() == ERROR_HANDLE_EOF)
hr = S_FALSE;
else
hr = HRESULT_FROM_WIN32(GetLastError());
return hr;
}
static HRESULT WINAPI FileAsyncReader_Length(IAsyncReader *iface, LONGLONG *total, LONGLONG *available)
{
struct async_reader *filter = impl_from_IAsyncReader(iface);
TRACE("iface %p, total %p, available %p.\n", iface, total, available);
*available = *total = filter->file_size.QuadPart;
return S_OK;
}
static HRESULT WINAPI FileAsyncReader_BeginFlush(IAsyncReader * iface)
{
struct async_reader *filter = impl_from_IAsyncReader(iface);
unsigned int i;
TRACE("iface %p.\n", iface);
EnterCriticalSection(&filter->sample_cs);
filter->flushing = TRUE;
for (i = 0; i < filter->max_requests; ++i)
filter->requests[i].sample = NULL;
CancelIoEx(filter->file, NULL);
WakeAllConditionVariable(&filter->sample_cv);
LeaveCriticalSection(&filter->sample_cs);
return S_OK;
}
static HRESULT WINAPI FileAsyncReader_EndFlush(IAsyncReader * iface)
{
struct async_reader *filter = impl_from_IAsyncReader(iface);
TRACE("iface %p.\n", iface);
EnterCriticalSection(&filter->sample_cs);
filter->flushing = FALSE;
LeaveCriticalSection(&filter->sample_cs);
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,
};
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