/* * 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 */ /* FIXME: critical sections */ #define COBJMACROS #include "dshow.h" #include "wine/strmbase.h" #include "uuids.h" #include "wine/debug.h" #include <assert.h> WINE_DEFAULT_DEBUG_CHANNEL(strmbase); static inline SourceSeeking *impl_from_IMediaSeeking(IMediaSeeking *iface) { return CONTAINING_RECORD(iface, SourceSeeking, IMediaSeeking_iface); } HRESULT SourceSeeking_Init(SourceSeeking *pSeeking, const IMediaSeekingVtbl *Vtbl, SourceSeeking_ChangeStop fnChangeStop, SourceSeeking_ChangeStart fnChangeStart, SourceSeeking_ChangeRate fnChangeRate, PCRITICAL_SECTION crit_sect) { 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; pSeeking->crst = crit_sect; return S_OK; } 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->crst); *pFormat = This->timeformat; LeaveCriticalSection(This->crst); 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->crst); if (!IsEqualIID(pFormat, &This->timeformat)) hr = S_FALSE; LeaveCriticalSection(This->crst); 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->crst); *pDuration = This->llDuration; LeaveCriticalSection(This->crst); return S_OK; } HRESULT WINAPI SourceSeekingImpl_GetStopPosition(IMediaSeeking * iface, LONGLONG * pStop) { SourceSeeking *This = impl_from_IMediaSeeking(iface); TRACE("(%p)\n", pStop); EnterCriticalSection(This->crst); *pStop = This->llStop; LeaveCriticalSection(This->crst); 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->crst); *pCurrent = This->llCurrent; LeaveCriticalSection(This->crst); 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("(%p, %x, %p, %x)\n", pCurrent, dwCurrentFlags, pStop, dwStopFlags); EnterCriticalSection(This->crst); llNewCurrent = Adjust(This->llCurrent, pCurrent, dwCurrentFlags); llNewStop = Adjust(This->llStop, pStop, dwStopFlags); if (pCurrent) bChangeCurrent = TRUE; 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; if (pCurrent && (dwCurrentFlags & AM_SEEKING_ReturnTime)) *pCurrent = llNewCurrent; if (pStop && (dwStopFlags & AM_SEEKING_ReturnTime)) *pStop = llNewStop; LeaveCriticalSection(This->crst); 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->crst); IMediaSeeking_GetCurrentPosition(iface, pCurrent); IMediaSeeking_GetStopPosition(iface, pStop); LeaveCriticalSection(This->crst); 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->crst); *pEarliest = 0; *pLatest = This->llDuration; LeaveCriticalSection(This->crst); 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->crst); This->dRate = dRate; if (bChangeRate) hr = This->fnChangeRate(iface); LeaveCriticalSection(This->crst); return hr; } HRESULT WINAPI SourceSeekingImpl_GetRate(IMediaSeeking * iface, double * dRate) { SourceSeeking *This = impl_from_IMediaSeeking(iface); TRACE("(%p)\n", dRate); EnterCriticalSection(This->crst); /* Forward? */ *dRate = This->dRate; LeaveCriticalSection(This->crst); return S_OK; } HRESULT WINAPI SourceSeekingImpl_GetPreroll(IMediaSeeking * iface, LONGLONG * pPreroll) { TRACE("(%p)\n", pPreroll); *pPreroll = 0; return S_OK; }