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quartz: Fix locking in MediaSeeking and forward SetPosition. 

Don't hold locks while forwarding messages, instead rely on the
reference count. This prevents some really fun deadlocks from
occuring.
This commit is contained in:
Maarten Lankhorst 2008-04-01 13:56:28 -07:00 committed by Alexandre Julliard
parent e18129068e
commit 4b5d06d30f
1 changed files with 38 additions and 10 deletions
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48
dlls/quartz/control.c
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@ -32,7 +32,7 @@ WINE_DEFAULT_DEBUG_CHANNEL(quartz);
typedef HRESULT (*SeekFunc)( IMediaSeeking *to, LPVOID arg );
static HRESULT ForwardCmdSeek( IBaseFilter* from, SeekFunc fnSeek, LPVOID arg )
static HRESULT ForwardCmdSeek( PCRITICAL_SECTION crit_sect, IBaseFilter* from, SeekFunc fnSeek, LPVOID arg )
{
HRESULT hr = S_OK;
HRESULT hr_return = S_OK;
@ -71,7 +71,9 @@ static HRESULT ForwardCmdSeek( IBaseFilter* from, SeekFunc fnSeek, LPVOID arg )
if (!hr_local)
{
foundend = TRUE;
LeaveCriticalSection( crit_sect );
hr_local = fnSeek( seek , arg );
EnterCriticalSection( crit_sect );
if (hr_local != E_NOTIMPL)
allnotimpl = FALSE;
@ -90,7 +92,7 @@ static HRESULT ForwardCmdSeek( IBaseFilter* from, SeekFunc fnSeek, LPVOID arg )
hr = hr_return;
out:
FIXME("Returning: %08x\n", hr);
TRACE("Returning: %08x\n", hr);
return hr;
}
@ -148,7 +150,9 @@ HRESULT WINAPI MediaSeekingImpl_CheckCapabilities(IMediaSeeking * iface, DWORD *
if (!pCapabilities)
return E_POINTER;
hr = ForwardCmdSeek(This->pUserData, fwd_checkcaps, pCapabilities);
EnterCriticalSection(This->crst);
hr = ForwardCmdSeek(This->crst, This->pUserData, fwd_checkcaps, pCapabilities);
LeaveCriticalSection(This->crst);
if (FAILED(hr) && hr != E_NOTIMPL)
return hr;
@ -217,7 +221,9 @@ HRESULT WINAPI MediaSeekingImpl_SetTimeFormat(IMediaSeeking * iface, const GUID
MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
TRACE("(%s)\n", qzdebugstr_guid(pFormat));
ForwardCmdSeek(This->pUserData, fwd_settimeformat, (LPVOID)pFormat);
EnterCriticalSection(This->crst);
ForwardCmdSeek(This->crst, This->pUserData, fwd_settimeformat, (LPVOID)pFormat);
LeaveCriticalSection(This->crst);
return (IsEqualIID(pFormat, &TIME_FORMAT_MEDIA_TIME) ? S_OK : S_FALSE);
}
@ -246,7 +252,7 @@ HRESULT WINAPI MediaSeekingImpl_GetDuration(IMediaSeeking * iface, LONGLONG * pD
EnterCriticalSection(This->crst);
*pDuration = This->llDuration;
ForwardCmdSeek(This->pUserData, fwd_getduration, pDuration);
ForwardCmdSeek(This->crst, This->pUserData, fwd_getduration, pDuration);
LeaveCriticalSection(This->crst);
return S_OK;
@ -276,7 +282,7 @@ HRESULT WINAPI MediaSeekingImpl_GetStopPosition(IMediaSeeking * iface, LONGLONG
EnterCriticalSection(This->crst);
*pStop = This->llStop;
ForwardCmdSeek(This->pUserData, fwd_getstopposition, pStop);
ForwardCmdSeek(This->crst, This->pUserData, fwd_getstopposition, pStop);
LeaveCriticalSection(This->crst);
return S_OK;
@ -307,7 +313,7 @@ HRESULT WINAPI MediaSeekingImpl_GetCurrentPosition(IMediaSeeking * iface, LONGLO
EnterCriticalSection(This->crst);
*pCurrent = This->llCurrent;
ForwardCmdSeek(This->pUserData, fwd_getcurposition, pCurrent);
ForwardCmdSeek(This->crst, This->pUserData, fwd_getcurposition, pCurrent);
LeaveCriticalSection(This->crst);
return S_OK;
@ -341,14 +347,33 @@ static inline LONGLONG Adjust(LONGLONG value, const LONGLONG * pModifier, DWORD
}
}
struct pos_args {
LONGLONG* current, *stop;
DWORD curflags, stopflags;
};
static HRESULT fwd_setposition(IMediaSeeking *seek, LPVOID pargs)
{
struct pos_args *args = (void*)pargs;
return IMediaSeeking_SetPositions(seek, args->current, args->curflags, args->stop, args->stopflags);
}
HRESULT WINAPI MediaSeekingImpl_SetPositions(IMediaSeeking * iface, LONGLONG * pCurrent, DWORD dwCurrentFlags, LONGLONG * pStop, DWORD dwStopFlags)
{
MediaSeekingImpl *This = (MediaSeekingImpl *)iface;
BOOL bChangeCurrent = FALSE, bChangeStop = FALSE;
LONGLONG llNewCurrent, llNewStop;
struct pos_args args;
TRACE("(%p, %x, %p, %x)\n", pCurrent, dwCurrentFlags, pStop, dwStopFlags);
args.current = pCurrent;
args.stop = pStop;
args.curflags = dwCurrentFlags;
args.stopflags = dwStopFlags;
EnterCriticalSection(This->crst);
llNewCurrent = Adjust(This->llCurrent, pCurrent, dwCurrentFlags);
@ -359,6 +384,8 @@ HRESULT WINAPI MediaSeekingImpl_SetPositions(IMediaSeeking * iface, LONGLONG * p
if (llNewStop != This->llStop)
bChangeStop = TRUE;
TRACE("Old: %u, New: %u\n", (DWORD)(This->llCurrent/10000000), (DWORD)(llNewCurrent/10000000));
This->llCurrent = llNewCurrent;
This->llStop = llNewStop;
@ -367,13 +394,14 @@ HRESULT WINAPI MediaSeekingImpl_SetPositions(IMediaSeeking * iface, LONGLONG * p
if (dwStopFlags & AM_SEEKING_ReturnTime)
*pStop = llNewStop;
ForwardCmdSeek(This->crst, This->pUserData, fwd_setposition, &args);
LeaveCriticalSection(This->crst);
if (bChangeCurrent)
This->fnChangeCurrent(This->pUserData);
if (bChangeStop)
This->fnChangeStop(This->pUserData);
LeaveCriticalSection(This->crst);
return S_OK;
}
@ -436,7 +464,7 @@ HRESULT WINAPI MediaSeekingImpl_SetRate(IMediaSeeking * iface, double dRate)
This->dRate = dRate;
if (bChangeRate)
hr = This->fnChangeRate(This->pUserData);
ForwardCmdSeek(This->pUserData, fwd_setrate, &dRate);
ForwardCmdSeek(This->crst, This->pUserData, fwd_setrate, &dRate);
LeaveCriticalSection(This->crst);
return hr;