Sweden-Number/libs/strmbase/seeking.c

328 lines
9.4 KiB
C

/*
* Filter Seeking and Control Interfaces
*
* Copyright 2003 Robert Shearman
* Copyright 2010 Aric Stewart, CodeWeavers
*
* 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
*/
#include "strmbase_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(quartz);
static inline SourceSeeking *impl_from_IMediaSeeking(IMediaSeeking *iface)
{
return CONTAINING_RECORD(iface, SourceSeeking, IMediaSeeking_iface);
}
HRESULT strmbase_seeking_init(SourceSeeking *pSeeking, const IMediaSeekingVtbl *Vtbl,
SourceSeeking_ChangeStop fnChangeStop, SourceSeeking_ChangeStart fnChangeStart,
SourceSeeking_ChangeRate fnChangeRate)
{
assert(fnChangeStop && fnChangeStart && fnChangeRate);
pSeeking->IMediaSeeking_iface.lpVtbl = Vtbl;
pSeeking->refCount = 1;
pSeeking->fnChangeRate = fnChangeRate;
pSeeking->fnChangeStop = fnChangeStop;
pSeeking->fnChangeStart = fnChangeStart;
pSeeking->dwCapabilities = AM_SEEKING_CanSeekForwards |
AM_SEEKING_CanSeekBackwards |
AM_SEEKING_CanSeekAbsolute |
AM_SEEKING_CanGetStopPos |
AM_SEEKING_CanGetDuration;
pSeeking->llCurrent = 0;
pSeeking->llStop = ((ULONGLONG)0x80000000) << 32;
pSeeking->llDuration = pSeeking->llStop;
pSeeking->dRate = 1.0;
pSeeking->timeformat = TIME_FORMAT_MEDIA_TIME;
InitializeCriticalSection(&pSeeking->cs);
pSeeking->cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": SourceSeeking.cs");
return S_OK;
}
void strmbase_seeking_cleanup(SourceSeeking *seeking)
{
DeleteCriticalSection(&seeking->cs);
}
HRESULT WINAPI SourceSeekingImpl_GetCapabilities(IMediaSeeking * iface, DWORD * pCapabilities)
{
SourceSeeking *This = impl_from_IMediaSeeking(iface);
TRACE("(%p)\n", pCapabilities);
*pCapabilities = This->dwCapabilities;
return S_OK;
}
HRESULT WINAPI SourceSeekingImpl_CheckCapabilities(IMediaSeeking * iface, DWORD * pCapabilities)
{
SourceSeeking *This = impl_from_IMediaSeeking(iface);
HRESULT hr;
DWORD dwCommonCaps;
TRACE("(%p)\n", pCapabilities);
if (!pCapabilities)
return E_POINTER;
dwCommonCaps = *pCapabilities & This->dwCapabilities;
if (!dwCommonCaps)
hr = E_FAIL;
else
hr = (*pCapabilities == dwCommonCaps) ? S_OK : S_FALSE;
*pCapabilities = dwCommonCaps;
return hr;
}
HRESULT WINAPI SourceSeekingImpl_IsFormatSupported(IMediaSeeking * iface, const GUID * pFormat)
{
TRACE("(%s)\n", debugstr_guid(pFormat));
return (IsEqualIID(pFormat, &TIME_FORMAT_MEDIA_TIME) ? S_OK : S_FALSE);
}
HRESULT WINAPI SourceSeekingImpl_QueryPreferredFormat(IMediaSeeking * iface, GUID * pFormat)
{
TRACE("(%s)\n", debugstr_guid(pFormat));
*pFormat = TIME_FORMAT_MEDIA_TIME;
return S_OK;
}
HRESULT WINAPI SourceSeekingImpl_GetTimeFormat(IMediaSeeking * iface, GUID * pFormat)
{
SourceSeeking *This = impl_from_IMediaSeeking(iface);
TRACE("(%s)\n", debugstr_guid(pFormat));
EnterCriticalSection(&This->cs);
*pFormat = This->timeformat;
LeaveCriticalSection(&This->cs);
return S_OK;
}
HRESULT WINAPI SourceSeekingImpl_IsUsingTimeFormat(IMediaSeeking * iface, const GUID * pFormat)
{
SourceSeeking *This = impl_from_IMediaSeeking(iface);
HRESULT hr = S_OK;
TRACE("(%s)\n", debugstr_guid(pFormat));
EnterCriticalSection(&This->cs);
if (!IsEqualIID(pFormat, &This->timeformat))
hr = S_FALSE;
LeaveCriticalSection(&This->cs);
return hr;
}
HRESULT WINAPI SourceSeekingImpl_SetTimeFormat(IMediaSeeking * iface, const GUID * pFormat)
{
SourceSeeking *This = impl_from_IMediaSeeking(iface);
TRACE("%p %s\n", This, debugstr_guid(pFormat));
return (IsEqualIID(pFormat, &TIME_FORMAT_MEDIA_TIME) ? S_OK : E_INVALIDARG);
}
HRESULT WINAPI SourceSeekingImpl_GetDuration(IMediaSeeking * iface, LONGLONG * pDuration)
{
SourceSeeking *This = impl_from_IMediaSeeking(iface);
TRACE("(%p)\n", pDuration);
EnterCriticalSection(&This->cs);
*pDuration = This->llDuration;
LeaveCriticalSection(&This->cs);
return S_OK;
}
HRESULT WINAPI SourceSeekingImpl_GetStopPosition(IMediaSeeking * iface, LONGLONG * pStop)
{
SourceSeeking *This = impl_from_IMediaSeeking(iface);
TRACE("(%p)\n", pStop);
EnterCriticalSection(&This->cs);
*pStop = This->llStop;
LeaveCriticalSection(&This->cs);
return S_OK;
}
/* FIXME: Make use of the info the filter should expose */
HRESULT WINAPI SourceSeekingImpl_GetCurrentPosition(IMediaSeeking * iface, LONGLONG * pCurrent)
{
SourceSeeking *This = impl_from_IMediaSeeking(iface);
TRACE("(%p)\n", pCurrent);
EnterCriticalSection(&This->cs);
*pCurrent = This->llCurrent;
LeaveCriticalSection(&This->cs);
return S_OK;
}
HRESULT WINAPI SourceSeekingImpl_ConvertTimeFormat(IMediaSeeking * iface, LONGLONG * pTarget, const GUID * pTargetFormat, LONGLONG Source, const GUID * pSourceFormat)
{
SourceSeeking *This = impl_from_IMediaSeeking(iface);
if (!pTargetFormat)
pTargetFormat = &This->timeformat;
if (!pSourceFormat)
pSourceFormat = &This->timeformat;
if (IsEqualIID(pTargetFormat, &TIME_FORMAT_MEDIA_TIME) && IsEqualIID(pSourceFormat, &TIME_FORMAT_MEDIA_TIME))
{
*pTarget = Source;
return S_OK;
}
/* FIXME: clear pTarget? */
return E_INVALIDARG;
}
static inline LONGLONG Adjust(LONGLONG value, const LONGLONG * pModifier, DWORD dwFlags)
{
switch (dwFlags & AM_SEEKING_PositioningBitsMask)
{
case AM_SEEKING_NoPositioning:
return value;
case AM_SEEKING_AbsolutePositioning:
return *pModifier;
case AM_SEEKING_RelativePositioning:
case AM_SEEKING_IncrementalPositioning:
return value + *pModifier;
default:
assert(FALSE);
return 0;
}
}
HRESULT WINAPI SourceSeekingImpl_SetPositions(IMediaSeeking * iface, LONGLONG * pCurrent, DWORD dwCurrentFlags, LONGLONG * pStop, DWORD dwStopFlags)
{
SourceSeeking *This = impl_from_IMediaSeeking(iface);
BOOL bChangeCurrent = FALSE, bChangeStop = FALSE;
LONGLONG llNewCurrent, llNewStop;
TRACE("iface %p, current %s, current_flags %#lx, stop %s, stop_flags %#lx.\n", iface,
pCurrent ? debugstr_time(*pCurrent) : "<null>", dwCurrentFlags,
pStop ? debugstr_time(*pStop): "<null>", dwStopFlags);
EnterCriticalSection(&This->cs);
llNewCurrent = Adjust(This->llCurrent, pCurrent, dwCurrentFlags);
llNewStop = Adjust(This->llStop, pStop, dwStopFlags);
if (pCurrent)
bChangeCurrent = TRUE;
if (llNewStop != This->llStop)
bChangeStop = TRUE;
TRACE("Seeking from %s to %s.\n", debugstr_time(This->llCurrent), debugstr_time(llNewCurrent));
This->llCurrent = llNewCurrent;
This->llStop = llNewStop;
if (pCurrent && (dwCurrentFlags & AM_SEEKING_ReturnTime))
*pCurrent = llNewCurrent;
if (pStop && (dwStopFlags & AM_SEEKING_ReturnTime))
*pStop = llNewStop;
LeaveCriticalSection(&This->cs);
if (bChangeCurrent)
This->fnChangeStart(iface);
if (bChangeStop)
This->fnChangeStop(iface);
return S_OK;
}
HRESULT WINAPI SourceSeekingImpl_GetPositions(IMediaSeeking * iface, LONGLONG * pCurrent, LONGLONG * pStop)
{
SourceSeeking *This = impl_from_IMediaSeeking(iface);
TRACE("(%p, %p)\n", pCurrent, pStop);
EnterCriticalSection(&This->cs);
IMediaSeeking_GetCurrentPosition(iface, pCurrent);
IMediaSeeking_GetStopPosition(iface, pStop);
LeaveCriticalSection(&This->cs);
return S_OK;
}
HRESULT WINAPI SourceSeekingImpl_GetAvailable(IMediaSeeking * iface, LONGLONG * pEarliest, LONGLONG * pLatest)
{
SourceSeeking *This = impl_from_IMediaSeeking(iface);
TRACE("(%p, %p)\n", pEarliest, pLatest);
EnterCriticalSection(&This->cs);
*pEarliest = 0;
*pLatest = This->llDuration;
LeaveCriticalSection(&This->cs);
return S_OK;
}
HRESULT WINAPI SourceSeekingImpl_SetRate(IMediaSeeking * iface, double dRate)
{
SourceSeeking *This = impl_from_IMediaSeeking(iface);
BOOL bChangeRate = (dRate != This->dRate);
HRESULT hr = S_OK;
TRACE("(%e)\n", dRate);
if (dRate > 100 || dRate < .001)
{
FIXME("Excessive rate %e, ignoring\n", dRate);
return VFW_E_UNSUPPORTED_AUDIO;
}
EnterCriticalSection(&This->cs);
This->dRate = dRate;
if (bChangeRate)
hr = This->fnChangeRate(iface);
LeaveCriticalSection(&This->cs);
return hr;
}
HRESULT WINAPI SourceSeekingImpl_GetRate(IMediaSeeking * iface, double * dRate)
{
SourceSeeking *This = impl_from_IMediaSeeking(iface);
TRACE("(%p)\n", dRate);
EnterCriticalSection(&This->cs);
/* Forward? */
*dRate = This->dRate;
LeaveCriticalSection(&This->cs);
return S_OK;
}
HRESULT WINAPI SourceSeekingImpl_GetPreroll(IMediaSeeking * iface, LONGLONG * pPreroll)
{
TRACE("(%p)\n", pPreroll);
*pPreroll = 0;
return S_OK;
}