seeking.c File Reference

#include "dshow.h"
#include "wine/strmbase.h"
#include "uuids.h"
#include "wine/debug.h"
#include <assert.h>

Include dependency graph for seeking.c:

Go to the source code of this file.

Macros
#define	COBJMACROS

Functions
	WINE_DEFAULT_DEBUG_CHANNEL (strmbase)
static SourceSeeking *	impl_from_IMediaSeeking (IMediaSeeking *iface)
HRESULT	SourceSeeking_Init (SourceSeeking *pSeeking, const IMediaSeekingVtbl *Vtbl, SourceSeeking_ChangeStop fnChangeStop, SourceSeeking_ChangeStart fnChangeStart, SourceSeeking_ChangeRate fnChangeRate, PCRITICAL_SECTION crit_sect)
HRESULT WINAPI	SourceSeekingImpl_GetCapabilities (IMediaSeeking *iface, DWORD *pCapabilities)
HRESULT WINAPI	SourceSeekingImpl_CheckCapabilities (IMediaSeeking *iface, DWORD *pCapabilities)
HRESULT WINAPI	SourceSeekingImpl_IsFormatSupported (IMediaSeeking *iface, const GUID *pFormat)
HRESULT WINAPI	SourceSeekingImpl_QueryPreferredFormat (IMediaSeeking *iface, GUID *pFormat)
HRESULT WINAPI	SourceSeekingImpl_GetTimeFormat (IMediaSeeking *iface, GUID *pFormat)
HRESULT WINAPI	SourceSeekingImpl_IsUsingTimeFormat (IMediaSeeking *iface, const GUID *pFormat)
HRESULT WINAPI	SourceSeekingImpl_SetTimeFormat (IMediaSeeking *iface, const GUID *pFormat)
HRESULT WINAPI	SourceSeekingImpl_GetDuration (IMediaSeeking *iface, LONGLONG *pDuration)
HRESULT WINAPI	SourceSeekingImpl_GetStopPosition (IMediaSeeking *iface, LONGLONG *pStop)
HRESULT WINAPI	SourceSeekingImpl_GetCurrentPosition (IMediaSeeking *iface, LONGLONG *pCurrent)
HRESULT WINAPI	SourceSeekingImpl_ConvertTimeFormat (IMediaSeeking *iface, LONGLONG *pTarget, const GUID *pTargetFormat, LONGLONG Source, const GUID *pSourceFormat)
static LONGLONG	Adjust (LONGLONG value, const LONGLONG *pModifier, DWORD dwFlags)
HRESULT WINAPI	SourceSeekingImpl_SetPositions (IMediaSeeking *iface, LONGLONG *pCurrent, DWORD dwCurrentFlags, LONGLONG *pStop, DWORD dwStopFlags)
HRESULT WINAPI	SourceSeekingImpl_GetPositions (IMediaSeeking *iface, LONGLONG *pCurrent, LONGLONG *pStop)
HRESULT WINAPI	SourceSeekingImpl_GetAvailable (IMediaSeeking *iface, LONGLONG *pEarliest, LONGLONG *pLatest)
HRESULT WINAPI	SourceSeekingImpl_SetRate (IMediaSeeking *iface, double dRate)
HRESULT WINAPI	SourceSeekingImpl_GetRate (IMediaSeeking *iface, double *dRate)
HRESULT WINAPI	SourceSeekingImpl_GetPreroll (IMediaSeeking *iface, LONGLONG *pPreroll)

Macro Definition Documentation

COBJMACROS

#define COBJMACROS

Definition at line 23 of file seeking.c.

Function Documentation

Adjust()

static LONGLONG Adjust ( LONGLONG  value, const LONGLONG *  pModifier, DWORD  dwFlags  )

inlinestatic

Definition at line 201 of file seeking.c.

{
    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;
    }
}

Referenced by AdjustPacket(), and SourceSeekingImpl_SetPositions().

impl_from_IMediaSeeking()

static SourceSeeking * impl_from_IMediaSeeking ( IMediaSeeking *  iface )

inlinestatic

Definition at line 35 of file seeking.c.

{
    return CONTAINING_RECORD(iface, SourceSeeking, IMediaSeeking_iface);
}

Referenced by SourceSeekingImpl_CheckCapabilities(), SourceSeekingImpl_ConvertTimeFormat(), SourceSeekingImpl_GetAvailable(), SourceSeekingImpl_GetCapabilities(), SourceSeekingImpl_GetCurrentPosition(), SourceSeekingImpl_GetDuration(), SourceSeekingImpl_GetPositions(), SourceSeekingImpl_GetRate(), SourceSeekingImpl_GetStopPosition(), SourceSeekingImpl_GetTimeFormat(), SourceSeekingImpl_IsUsingTimeFormat(), SourceSeekingImpl_SetPositions(), SourceSeekingImpl_SetRate(), and SourceSeekingImpl_SetTimeFormat().

SourceSeeking_Init()

HRESULT SourceSeeking_Init	(	SourceSeeking *	pSeeking,
		const IMediaSeekingVtbl *	Vtbl,
		SourceSeeking_ChangeStop	fnChangeStop,
		SourceSeeking_ChangeStart	fnChangeStart,
		SourceSeeking_ChangeRate	fnChangeRate,
		PCRITICAL_SECTION	crit_sect
	)

Definition at line 40 of file seeking.c.

{
    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;
}

Referenced by Parser_Create().

SourceSeekingImpl_CheckCapabilities()

HRESULT WINAPI SourceSeekingImpl_CheckCapabilities	(	IMediaSeeking *	iface,
		DWORD *	pCapabilities
	)

Definition at line 74 of file seeking.c.

{
    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;
}

SourceSeekingImpl_ConvertTimeFormat()

HRESULT WINAPI SourceSeekingImpl_ConvertTimeFormat	(	IMediaSeeking *	iface,
		LONGLONG *	pTarget,
		const GUID *	pTargetFormat,
		LONGLONG	Source,
		const GUID *	pSourceFormat
	)

Definition at line 185 of file seeking.c.

{
    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;
}

SourceSeekingImpl_GetAvailable()

HRESULT WINAPI SourceSeekingImpl_GetAvailable	(	IMediaSeeking *	iface,
		LONGLONG *	pEarliest,
		LONGLONG *	pLatest
	)

Definition at line 268 of file seeking.c.

{
    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;
}

SourceSeekingImpl_GetCapabilities()

HRESULT WINAPI SourceSeekingImpl_GetCapabilities	(	IMediaSeeking *	iface,
		DWORD *	pCapabilities
	)

Definition at line 63 of file seeking.c.

{
    SourceSeeking *This = impl_from_IMediaSeeking(iface);
 
    TRACE("(%p)\n", pCapabilities);
 
    *pCapabilities = This->dwCapabilities;
 
    return S_OK;
}

SourceSeekingImpl_GetCurrentPosition()

HRESULT WINAPI SourceSeekingImpl_GetCurrentPosition	(	IMediaSeeking *	iface,
		LONGLONG *	pCurrent
	)

Definition at line 172 of file seeking.c.

{
    SourceSeeking *This = impl_from_IMediaSeeking(iface);
 
    TRACE("(%p)\n", pCurrent);
 
    EnterCriticalSection(This->crst);
    *pCurrent = This->llCurrent;
    LeaveCriticalSection(This->crst);
 
    return S_OK;
}

SourceSeekingImpl_GetDuration()

HRESULT WINAPI SourceSeekingImpl_GetDuration	(	IMediaSeeking *	iface,
		LONGLONG *	pDuration
	)

Definition at line 145 of file seeking.c.

{
    SourceSeeking *This = impl_from_IMediaSeeking(iface);
 
    TRACE("(%p)\n", pDuration);
 
    EnterCriticalSection(This->crst);
    *pDuration = This->llDuration;
    LeaveCriticalSection(This->crst);
 
    return S_OK;
}

SourceSeekingImpl_GetPositions()

HRESULT WINAPI SourceSeekingImpl_GetPositions	(	IMediaSeeking *	iface,
		LONGLONG *	pCurrent,
		LONGLONG *	pStop
	)

Definition at line 254 of file seeking.c.

{
    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;
}

SourceSeekingImpl_GetPreroll()

HRESULT WINAPI SourceSeekingImpl_GetPreroll	(	IMediaSeeking *	iface,
		LONGLONG *	pPreroll
	)

Definition at line 319 of file seeking.c.

{
    TRACE("(%p)\n", pPreroll);
 
    *pPreroll = 0;
    return S_OK;
}

SourceSeekingImpl_GetRate()

HRESULT WINAPI SourceSeekingImpl_GetRate	(	IMediaSeeking *	iface,
		double *	dRate
	)

Definition at line 305 of file seeking.c.

{
    SourceSeeking *This = impl_from_IMediaSeeking(iface);
 
    TRACE("(%p)\n", dRate);
 
    EnterCriticalSection(This->crst);
    /* Forward? */
    *dRate = This->dRate;
    LeaveCriticalSection(This->crst);
 
    return S_OK;
}

SourceSeekingImpl_GetStopPosition()

HRESULT WINAPI SourceSeekingImpl_GetStopPosition	(	IMediaSeeking *	iface,
		LONGLONG *	pStop
	)

Definition at line 158 of file seeking.c.

{
    SourceSeeking *This = impl_from_IMediaSeeking(iface);
 
    TRACE("(%p)\n", pStop);
 
    EnterCriticalSection(This->crst);
    *pStop = This->llStop;
    LeaveCriticalSection(This->crst);
 
    return S_OK;
}

SourceSeekingImpl_GetTimeFormat()

HRESULT WINAPI SourceSeekingImpl_GetTimeFormat	(	IMediaSeeking *	iface,
		GUID *	pFormat
	)

Definition at line 110 of file seeking.c.

{
    SourceSeeking *This = impl_from_IMediaSeeking(iface);
    TRACE("(%s)\n", debugstr_guid(pFormat));
 
    EnterCriticalSection(This->crst);
    *pFormat = This->timeformat;
    LeaveCriticalSection(This->crst);
 
    return S_OK;
}

SourceSeekingImpl_IsFormatSupported()

HRESULT WINAPI SourceSeekingImpl_IsFormatSupported	(	IMediaSeeking *	iface,
		const GUID *	pFormat
	)

Definition at line 95 of file seeking.c.

{
    TRACE("(%s)\n", debugstr_guid(pFormat));
 
    return (IsEqualIID(pFormat, &TIME_FORMAT_MEDIA_TIME) ? S_OK : S_FALSE);
}

SourceSeekingImpl_IsUsingTimeFormat()

HRESULT WINAPI SourceSeekingImpl_IsUsingTimeFormat	(	IMediaSeeking *	iface,
		const GUID *	pFormat
	)

Definition at line 122 of file seeking.c.

{
    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;
}

SourceSeekingImpl_QueryPreferredFormat()

HRESULT WINAPI SourceSeekingImpl_QueryPreferredFormat	(	IMediaSeeking *	iface,
		GUID *	pFormat
	)

Definition at line 102 of file seeking.c.

{
    TRACE("(%s)\n", debugstr_guid(pFormat));
 
    *pFormat = TIME_FORMAT_MEDIA_TIME;
    return S_OK;
}

SourceSeekingImpl_SetPositions()

HRESULT WINAPI SourceSeekingImpl_SetPositions	(	IMediaSeeking *	iface,
		LONGLONG *	pCurrent,
		DWORD	dwCurrentFlags,
		LONGLONG *	pStop,
		DWORD	dwStopFlags
	)

Definition at line 218 of file seeking.c.

{
    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;
}

SourceSeekingImpl_SetRate()

HRESULT WINAPI SourceSeekingImpl_SetRate	(	IMediaSeeking *	iface,
		double	dRate
	)

Definition at line 282 of file seeking.c.

{
    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;
}

SourceSeekingImpl_SetTimeFormat()

HRESULT WINAPI SourceSeekingImpl_SetTimeFormat	(	IMediaSeeking *	iface,
		const GUID *	pFormat
	)

Definition at line 137 of file seeking.c.

{
    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);
}

WINE_DEFAULT_DEBUG_CHANNEL()

WINE_DEFAULT_DEBUG_CHANNEL

(

strmbase

)