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//------------------------------------------------------------------------------
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// File: AMVideo.h
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//
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// Desc: Video related definitions and interfaces for ActiveMovie.
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//
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// Copyright (c) 1992 - 2000, Microsoft Corporation. All rights reserved.
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//------------------------------------------------------------------------------
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#ifndef __AMVIDEO__
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#define __AMVIDEO__
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#ifdef __cplusplus
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extern "C" {
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#endif // __cplusplus
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#include <ddraw.h>
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// This is an interface on the video renderer that provides information about
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// DirectDraw with respect to its use by the renderer. For example it allows
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// an application to get details of the surface and any hardware capabilities
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// that are available. It also allows someone to adjust the surfaces that the
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// renderer should use and furthermore even set the DirectDraw instance. We
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// allow someone to set the DirectDraw instance because DirectDraw can only
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// be opened once per process so it helps resolve conflicts. There is some
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// duplication in this interface as the hardware/emulated/FOURCCs available
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// can all be found through the IDirectDraw interface, this interface allows
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// simple access to that information without calling the DirectDraw provider
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// itself. The AMDDS prefix is ActiveMovie DirectDraw Switches abbreviated.
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#define AMDDS_NONE 0x00 // No use for DCI/DirectDraw
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#define AMDDS_DCIPS 0x01 // Use DCI primary surface
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#define AMDDS_PS 0x02 // Use DirectDraw primary
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#define AMDDS_RGBOVR 0x04 // RGB overlay surfaces
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#define AMDDS_YUVOVR 0x08 // YUV overlay surfaces
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#define AMDDS_RGBOFF 0x10 // RGB offscreen surfaces
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#define AMDDS_YUVOFF 0x20 // YUV offscreen surfaces
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#define AMDDS_RGBFLP 0x40 // RGB flipping surfaces
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#define AMDDS_YUVFLP 0x80 // YUV flipping surfaces
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#define AMDDS_ALL 0xFF // ALL the previous flags
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#define AMDDS_DEFAULT AMDDS_ALL // Use all available surfaces
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#define AMDDS_YUV (AMDDS_YUVOFF | AMDDS_YUVOVR | AMDDS_YUVFLP)
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#define AMDDS_RGB (AMDDS_RGBOFF | AMDDS_RGBOVR | AMDDS_RGBFLP)
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#define AMDDS_PRIMARY (AMDDS_DCIPS | AMDDS_PS)
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// be nice to our friends in C
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#undef INTERFACE
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#define INTERFACE IDirectDrawVideo
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DECLARE_INTERFACE_(IDirectDrawVideo, IUnknown)
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{
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// IUnknown methods
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STDMETHOD(QueryInterface)(THIS_ REFIID riid, LPVOID *ppvObj) PURE;
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STDMETHOD_(ULONG,AddRef)(THIS) PURE;
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STDMETHOD_(ULONG,Release)(THIS) PURE;
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// IDirectDrawVideo methods
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STDMETHOD(GetSwitches)(THIS_ DWORD *pSwitches) PURE;
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STDMETHOD(SetSwitches)(THIS_ DWORD Switches) PURE;
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STDMETHOD(GetCaps)(THIS_ DDCAPS *pCaps) PURE;
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STDMETHOD(GetEmulatedCaps)(THIS_ DDCAPS *pCaps) PURE;
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STDMETHOD(GetSurfaceDesc)(THIS_ DDSURFACEDESC *pSurfaceDesc) PURE;
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STDMETHOD(GetFourCCCodes)(THIS_ DWORD *pCount,DWORD *pCodes) PURE;
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STDMETHOD(SetDirectDraw)(THIS_ LPDIRECTDRAW pDirectDraw) PURE;
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STDMETHOD(GetDirectDraw)(THIS_ LPDIRECTDRAW *ppDirectDraw) PURE;
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STDMETHOD(GetSurfaceType)(THIS_ DWORD *pSurfaceType) PURE;
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STDMETHOD(SetDefault)(THIS) PURE;
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STDMETHOD(UseScanLine)(THIS_ long UseScanLine) PURE;
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STDMETHOD(CanUseScanLine)(THIS_ long *UseScanLine) PURE;
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STDMETHOD(UseOverlayStretch)(THIS_ long UseOverlayStretch) PURE;
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STDMETHOD(CanUseOverlayStretch)(THIS_ long *UseOverlayStretch) PURE;
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STDMETHOD(UseWhenFullScreen)(THIS_ long UseWhenFullScreen) PURE;
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STDMETHOD(WillUseFullScreen)(THIS_ long *UseWhenFullScreen) PURE;
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};
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// be nice to our friends in C
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#undef INTERFACE
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#define INTERFACE IQualProp
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DECLARE_INTERFACE_(IQualProp, IUnknown)
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{
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// IUnknown methods
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STDMETHOD(QueryInterface)(THIS_ REFIID riid, LPVOID *ppvObj) PURE;
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STDMETHOD_(ULONG,AddRef)(THIS) PURE;
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STDMETHOD_(ULONG,Release)(THIS) PURE;
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// Compare these with the functions in class CGargle in gargle.h
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STDMETHOD(get_FramesDroppedInRenderer)(THIS_ int *pcFrames) PURE; // Out
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STDMETHOD(get_FramesDrawn)(THIS_ int *pcFramesDrawn) PURE; // Out
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STDMETHOD(get_AvgFrameRate)(THIS_ int *piAvgFrameRate) PURE; // Out
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STDMETHOD(get_Jitter)(THIS_ int *iJitter) PURE; // Out
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STDMETHOD(get_AvgSyncOffset)(THIS_ int *piAvg) PURE; // Out
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STDMETHOD(get_DevSyncOffset)(THIS_ int *piDev) PURE; // Out
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};
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// This interface allows an application or plug in distributor to control a
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// full screen renderer. The Modex renderer supports this interface. When
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// connected a renderer should load the display modes it has available
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// The number of modes available can be obtained through CountModes. Then
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// information on each individual mode is available by calling GetModeInfo
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// and IsModeAvailable. An application may enable and disable any modes
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// by calling the SetEnabled flag with OATRUE or OAFALSE (not C/C++ TRUE
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// and FALSE values) - the current value may be queried by IsModeEnabled
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// A more generic way of setting the modes enabled that is easier to use
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// when writing applications is the clip loss factor. This defines the
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// amount of video that can be lost when deciding which display mode to
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// use. Assuming the decoder cannot compress the video then playing an
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// MPEG file (say 352x288) into a 320x200 display will lose about 25% of
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// the image. The clip loss factor specifies the upper range permissible.
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// To allow typical MPEG video to be played in 320x200 it defaults to 25%
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// be nice to our friends in C
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#undef INTERFACE
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#define INTERFACE IFullScreenVideo
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DECLARE_INTERFACE_(IFullScreenVideo, IUnknown)
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{
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// IUnknown methods
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STDMETHOD(QueryInterface)(THIS_ REFIID riid, LPVOID *ppvObj) PURE;
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STDMETHOD_(ULONG,AddRef)(THIS) PURE;
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STDMETHOD_(ULONG,Release)(THIS) PURE;
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// IFullScreenVideo methods
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STDMETHOD(CountModes)(THIS_ long *pModes) PURE;
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STDMETHOD(GetModeInfo)(THIS_ long Mode,long *pWidth,long *pHeight,long *pDepth) PURE;
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STDMETHOD(GetCurrentMode)(THIS_ long *pMode) PURE;
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STDMETHOD(IsModeAvailable)(THIS_ long Mode) PURE;
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STDMETHOD(IsModeEnabled)(THIS_ long Mode) PURE;
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STDMETHOD(SetEnabled)(THIS_ long Mode,long bEnabled) PURE;
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STDMETHOD(GetClipFactor)(THIS_ long *pClipFactor) PURE;
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STDMETHOD(SetClipFactor)(THIS_ long ClipFactor) PURE;
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STDMETHOD(SetMessageDrain)(THIS_ HWND hwnd) PURE;
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STDMETHOD(GetMessageDrain)(THIS_ HWND *hwnd) PURE;
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STDMETHOD(SetMonitor)(THIS_ long Monitor) PURE;
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STDMETHOD(GetMonitor)(THIS_ long *Monitor) PURE;
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STDMETHOD(HideOnDeactivate)(THIS_ long Hide) PURE;
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STDMETHOD(IsHideOnDeactivate)(THIS) PURE;
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STDMETHOD(SetCaption)(THIS_ BSTR strCaption) PURE;
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STDMETHOD(GetCaption)(THIS_ BSTR *pstrCaption) PURE;
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STDMETHOD(SetDefault)(THIS) PURE;
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};
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// This adds the accelerator table capabilities in fullscreen. This is being
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// added between the original runtime release and the full SDK release. We
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// cannot just add the method to IFullScreenVideo as we don't want to force
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// applications to have to ship the ActiveMovie support DLLs - this is very
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// important to applications that plan on being downloaded over the Internet
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// be nice to our friends in C
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#undef INTERFACE
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#define INTERFACE IFullScreenVideoEx
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DECLARE_INTERFACE_(IFullScreenVideoEx, IFullScreenVideo)
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{
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// IUnknown methods
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STDMETHOD(QueryInterface)(THIS_ REFIID riid, LPVOID *ppvObj) PURE;
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STDMETHOD_(ULONG,AddRef)(THIS) PURE;
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STDMETHOD_(ULONG,Release)(THIS) PURE;
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// IFullScreenVideo methods
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STDMETHOD(CountModes)(THIS_ long *pModes) PURE;
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STDMETHOD(GetModeInfo)(THIS_ long Mode,long *pWidth,long *pHeight,long *pDepth) PURE;
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STDMETHOD(GetCurrentMode)(THIS_ long *pMode) PURE;
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STDMETHOD(IsModeAvailable)(THIS_ long Mode) PURE;
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STDMETHOD(IsModeEnabled)(THIS_ long Mode) PURE;
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STDMETHOD(SetEnabled)(THIS_ long Mode,long bEnabled) PURE;
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STDMETHOD(GetClipFactor)(THIS_ long *pClipFactor) PURE;
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STDMETHOD(SetClipFactor)(THIS_ long ClipFactor) PURE;
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STDMETHOD(SetMessageDrain)(THIS_ HWND hwnd) PURE;
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STDMETHOD(GetMessageDrain)(THIS_ HWND *hwnd) PURE;
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STDMETHOD(SetMonitor)(THIS_ long Monitor) PURE;
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STDMETHOD(GetMonitor)(THIS_ long *Monitor) PURE;
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STDMETHOD(HideOnDeactivate)(THIS_ long Hide) PURE;
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STDMETHOD(IsHideOnDeactivate)(THIS) PURE;
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STDMETHOD(SetCaption)(THIS_ BSTR strCaption) PURE;
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STDMETHOD(GetCaption)(THIS_ BSTR *pstrCaption) PURE;
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STDMETHOD(SetDefault)(THIS) PURE;
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// IFullScreenVideoEx
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STDMETHOD(SetAcceleratorTable)(THIS_ HWND hwnd,HACCEL hAccel) PURE;
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STDMETHOD(GetAcceleratorTable)(THIS_ HWND *phwnd,HACCEL *phAccel) PURE;
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STDMETHOD(KeepPixelAspectRatio)(THIS_ long KeepAspect) PURE;
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STDMETHOD(IsKeepPixelAspectRatio)(THIS_ long *pKeepAspect) PURE;
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};
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// The SDK base classes contain a base video mixer class. Video mixing in a
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// software environment is tricky because we typically have multiple streams
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// each sending data at unpredictable times. To work with this we defined a
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// pin that is the lead pin, when data arrives on this pin we do a mix. As
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// an alternative we may not want to have a lead pin but output samples at
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// predefined spaces, like one every 1/15 of a second, this interfaces also
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// supports that mode of operations (there is a working video mixer sample)
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// be nice to our friends in C
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#undef INTERFACE
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#define INTERFACE IBaseVideoMixer
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DECLARE_INTERFACE_(IBaseVideoMixer, IUnknown)
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{
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STDMETHOD(SetLeadPin)(THIS_ int iPin) PURE;
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STDMETHOD(GetLeadPin)(THIS_ int *piPin) PURE;
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STDMETHOD(GetInputPinCount)(THIS_ int *piPinCount) PURE;
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STDMETHOD(IsUsingClock)(THIS_ int *pbValue) PURE;
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STDMETHOD(SetUsingClock)(THIS_ int bValue) PURE;
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STDMETHOD(GetClockPeriod)(THIS_ int *pbValue) PURE;
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STDMETHOD(SetClockPeriod)(THIS_ int bValue) PURE;
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};
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#define iPALETTE_COLORS 256 // Maximum colours in palette
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#define iEGA_COLORS 16 // Number colours in EGA palette
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#define iMASK_COLORS 3 // Maximum three components
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#define iTRUECOLOR 16 // Minimum true colour device
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#define iRED 0 // Index position for RED mask
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#define iGREEN 1 // Index position for GREEN mask
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#define iBLUE 2 // Index position for BLUE mask
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#define iPALETTE 8 // Maximum colour depth using a palette
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#define iMAXBITS 8 // Maximum bits per colour component
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// Used for true colour images that also have a palette
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typedef struct tag_TRUECOLORINFO {
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DWORD dwBitMasks[iMASK_COLORS];
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RGBQUAD bmiColors[iPALETTE_COLORS];
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} TRUECOLORINFO;
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// The BITMAPINFOHEADER contains all the details about the video stream such
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// as the actual image dimensions and their pixel depth. A source filter may
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// also request that the sink take only a section of the video by providing a
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// clipping rectangle in rcSource. In the worst case where the sink filter
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// forgets to check this on connection it will simply render the whole thing
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// which isn't a disaster. Ideally a sink filter will check the rcSource and
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// if it doesn't support image extraction and the rectangle is not empty then
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// it will reject the connection. A filter should use SetRectEmpty to reset a
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// rectangle to all zeroes (and IsRectEmpty to later check the rectangle).
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// The rcTarget specifies the destination rectangle for the video, for most
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// source filters they will set this to all zeroes, a downstream filter may
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// request that the video be placed in a particular area of the buffers it
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// supplies in which case it will call QueryAccept with a non empty target
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typedef struct tagVIDEOINFOHEADER {
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RECT rcSource; // The bit we really want to use
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RECT rcTarget; // Where the video should go
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DWORD dwBitRate; // Approximate bit data rate
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DWORD dwBitErrorRate; // Bit error rate for this stream
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REFERENCE_TIME AvgTimePerFrame; // Average time per frame (100ns units)
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BITMAPINFOHEADER bmiHeader;
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} VIDEOINFOHEADER;
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// make sure the pbmi is initialized before using these macros
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#define TRUECOLOR(pbmi) ((TRUECOLORINFO *)(((LPBYTE)&((pbmi)->bmiHeader)) \
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+ (pbmi)->bmiHeader.biSize))
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#define COLORS(pbmi) ((RGBQUAD *)(((LPBYTE)&((pbmi)->bmiHeader)) \
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+ (pbmi)->bmiHeader.biSize))
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#define BITMASKS(pbmi) ((DWORD *)(((LPBYTE)&((pbmi)->bmiHeader)) \
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+ (pbmi)->bmiHeader.biSize))
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// All the image based filters use this to communicate their media types. It's
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// centred principally around the BITMAPINFO. This structure always contains a
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// BITMAPINFOHEADER followed by a number of other fields depending on what the
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// BITMAPINFOHEADER contains. If it contains details of a palettised format it
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// will be followed by one or more RGBQUADs defining the palette. If it holds
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// details of a true colour format then it may be followed by a set of three
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// DWORD bit masks that specify where the RGB data can be found in the image
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// (For more information regarding BITMAPINFOs see the Win32 documentation)
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// The rcSource and rcTarget fields are not for use by filters supplying the
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// data. The destination (target) rectangle should be set to all zeroes. The
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// source may also be zero filled or set with the dimensions of the video. So
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// if the video is 352x288 pixels then set it to (0,0,352,288). These fields
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// are mainly used by downstream filters that want to ask the source filter
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// to place the image in a different position in an output buffer. So when
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// using for example the primary surface the video renderer may ask a filter
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// to place the video images in a destination position of (100,100,452,388)
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| 295 |
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// on the display since that's where the window is positioned on the display
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| 296 |
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| 297 |
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// !!! WARNING !!!
|
| 298 |
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// DO NOT use this structure unless you are sure that the BITMAPINFOHEADER
|
| 299 |
|
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// has a normal biSize == sizeof(BITMAPINFOHEADER) !
|
| 300 |
|
|
// !!! WARNING !!!
|
| 301 |
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|
| 302 |
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typedef struct tagVIDEOINFO {
|
| 303 |
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|
| 304 |
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RECT rcSource; // The bit we really want to use
|
| 305 |
|
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RECT rcTarget; // Where the video should go
|
| 306 |
|
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DWORD dwBitRate; // Approximate bit data rate
|
| 307 |
|
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DWORD dwBitErrorRate; // Bit error rate for this stream
|
| 308 |
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REFERENCE_TIME AvgTimePerFrame; // Average time per frame (100ns units)
|
| 309 |
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|
| 310 |
|
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BITMAPINFOHEADER bmiHeader;
|
| 311 |
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|
| 312 |
|
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union {
|
| 313 |
|
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RGBQUAD bmiColors[iPALETTE_COLORS]; // Colour palette
|
| 314 |
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DWORD dwBitMasks[iMASK_COLORS]; // True colour masks
|
| 315 |
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TRUECOLORINFO TrueColorInfo; // Both of the above
|
| 316 |
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};
|
| 317 |
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|
| 318 |
|
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} VIDEOINFO;
|
| 319 |
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|
| 320 |
|
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// These macros define some standard bitmap format sizes
|
| 321 |
|
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|
| 322 |
|
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#define SIZE_EGA_PALETTE (iEGA_COLORS * sizeof(RGBQUAD))
|
| 323 |
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#define SIZE_PALETTE (iPALETTE_COLORS * sizeof(RGBQUAD))
|
| 324 |
|
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#define SIZE_MASKS (iMASK_COLORS * sizeof(DWORD))
|
| 325 |
|
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#define SIZE_PREHEADER (FIELD_OFFSET(VIDEOINFOHEADER,bmiHeader))
|
| 326 |
|
|
#define SIZE_VIDEOHEADER (sizeof(BITMAPINFOHEADER) + SIZE_PREHEADER)
|
| 327 |
|
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// !!! for abnormal biSizes
|
| 328 |
|
|
// #define SIZE_VIDEOHEADER(pbmi) ((pbmi)->bmiHeader.biSize + SIZE_PREHEADER)
|
| 329 |
|
|
|
| 330 |
|
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// DIBSIZE calculates the number of bytes required by an image
|
| 331 |
|
|
|
| 332 |
|
|
#define WIDTHBYTES(bits) ((DWORD)(((bits)+31) & (~31)) / 8)
|
| 333 |
|
|
#define DIBWIDTHBYTES(bi) (DWORD)WIDTHBYTES((DWORD)(bi).biWidth * (DWORD)(bi).biBitCount)
|
| 334 |
|
|
#define _DIBSIZE(bi) (DIBWIDTHBYTES(bi) * (DWORD)(bi).biHeight)
|
| 335 |
|
|
#define DIBSIZE(bi) ((bi).biHeight < 0 ? (-1)*(_DIBSIZE(bi)) : _DIBSIZE(bi))
|
| 336 |
|
|
|
| 337 |
|
|
// This compares the bit masks between two VIDEOINFOHEADERs
|
| 338 |
|
|
|
| 339 |
|
|
#define BIT_MASKS_MATCH(pbmi1,pbmi2) \
|
| 340 |
|
|
(((pbmi1)->dwBitMasks[iRED] == (pbmi2)->dwBitMasks[iRED]) && \
|
| 341 |
|
|
((pbmi1)->dwBitMasks[iGREEN] == (pbmi2)->dwBitMasks[iGREEN]) && \
|
| 342 |
|
|
((pbmi1)->dwBitMasks[iBLUE] == (pbmi2)->dwBitMasks[iBLUE]))
|
| 343 |
|
|
|
| 344 |
|
|
// These zero fill different parts of the VIDEOINFOHEADER structure
|
| 345 |
|
|
|
| 346 |
|
|
// Only use these macros for pbmi's with a normal BITMAPINFOHEADER biSize
|
| 347 |
|
|
#define RESET_MASKS(pbmi) (ZeroMemory((PVOID)(pbmi)->dwBitFields,SIZE_MASKS))
|
| 348 |
|
|
#define RESET_HEADER(pbmi) (ZeroMemory((PVOID)(pbmi),SIZE_VIDEOHEADER))
|
| 349 |
|
|
#define RESET_PALETTE(pbmi) (ZeroMemory((PVOID)(pbmi)->bmiColors,SIZE_PALETTE));
|
| 350 |
|
|
|
| 351 |
|
|
#if 0
|
| 352 |
|
|
// !!! This is the right way to do it, but may break existing code
|
| 353 |
|
|
#define RESET_MASKS(pbmi) (ZeroMemory((PVOID)(((LPBYTE)(pbmi)->bmiHeader) + \
|
| 354 |
|
|
(pbmi)->bmiHeader.biSize,SIZE_MASKS)))
|
| 355 |
|
|
#define RESET_HEADER(pbmi) (ZeroMemory((PVOID)(pbmi), SIZE_PREHEADER + \
|
| 356 |
|
|
sizeof(BITMAPINFOHEADER)))
|
| 357 |
|
|
#define RESET_PALETTE(pbmi) (ZeroMemory((PVOID)(((LPBYTE)(pbmi)->bmiHeader) + \
|
| 358 |
|
|
(pbmi)->bmiHeader.biSize,SIZE_PALETTE))
|
| 359 |
|
|
#endif
|
| 360 |
|
|
|
| 361 |
|
|
// Other (hopefully) useful bits and bobs
|
| 362 |
|
|
|
| 363 |
|
|
#define PALETTISED(pbmi) ((pbmi)->bmiHeader.biBitCount <= iPALETTE)
|
| 364 |
|
|
#define PALETTE_ENTRIES(pbmi) ((DWORD) 1 << (pbmi)->bmiHeader.biBitCount)
|
| 365 |
|
|
|
| 366 |
|
|
// Returns the address of the BITMAPINFOHEADER from the VIDEOINFOHEADER
|
| 367 |
|
|
#define HEADER(pVideoInfo) (&(((VIDEOINFOHEADER *) (pVideoInfo))->bmiHeader))
|
| 368 |
|
|
|
| 369 |
|
|
|
| 370 |
|
|
// MPEG variant - includes a DWORD length followed by the
|
| 371 |
|
|
// video sequence header after the video header.
|
| 372 |
|
|
//
|
| 373 |
|
|
// The sequence header includes the sequence header start code and the
|
| 374 |
|
|
// quantization matrices associated with the first sequence header in the
|
| 375 |
|
|
// stream so is a maximum of 140 bytes long.
|
| 376 |
|
|
|
| 377 |
|
|
typedef struct tagMPEG1VIDEOINFO {
|
| 378 |
|
|
|
| 379 |
|
|
VIDEOINFOHEADER hdr; // Compatible with VIDEOINFO
|
| 380 |
|
|
DWORD dwStartTimeCode; // 25-bit Group of pictures time code
|
| 381 |
|
|
// at start of data
|
| 382 |
|
|
DWORD cbSequenceHeader; // Length in bytes of bSequenceHeader
|
| 383 |
|
|
BYTE bSequenceHeader[1]; // Sequence header including
|
| 384 |
|
|
// quantization matrices if any
|
| 385 |
|
|
} MPEG1VIDEOINFO;
|
| 386 |
|
|
|
| 387 |
|
|
#define MAX_SIZE_MPEG1_SEQUENCE_INFO 140
|
| 388 |
|
|
#define SIZE_MPEG1VIDEOINFO(pv) (FIELD_OFFSET(MPEG1VIDEOINFO, bSequenceHeader[0]) + (pv)->cbSequenceHeader)
|
| 389 |
|
|
#define MPEG1_SEQUENCE_INFO(pv) ((const BYTE *)(pv)->bSequenceHeader)
|
| 390 |
|
|
|
| 391 |
|
|
|
| 392 |
|
|
// Analog video variant - Use this when the format is FORMAT_AnalogVideo
|
| 393 |
|
|
//
|
| 394 |
|
|
// rcSource defines the portion of the active video signal to use
|
| 395 |
|
|
// rcTarget defines the destination rectangle
|
| 396 |
|
|
// both of the above are relative to the dwActiveWidth and dwActiveHeight fields
|
| 397 |
|
|
// dwActiveWidth is currently set to 720 for all formats (but could change for HDTV)
|
| 398 |
|
|
// dwActiveHeight is 483 for NTSC and 575 for PAL/SECAM (but could change for HDTV)
|
| 399 |
|
|
|
| 400 |
|
|
typedef struct tagAnalogVideoInfo {
|
| 401 |
|
|
RECT rcSource; // Width max is 720, height varies w/ TransmissionStd
|
| 402 |
|
|
RECT rcTarget; // Where the video should go
|
| 403 |
|
|
DWORD dwActiveWidth; // Always 720 (CCIR-601 active samples per line)
|
| 404 |
|
|
DWORD dwActiveHeight; // 483 for NTSC, 575 for PAL/SECAM
|
| 405 |
|
|
REFERENCE_TIME AvgTimePerFrame; // Normal ActiveMovie units (100 nS)
|
| 406 |
|
|
} ANALOGVIDEOINFO;
|
| 407 |
|
|
|
| 408 |
|
|
//
|
| 409 |
|
|
// AM_KSPROPSETID_FrameStep property set definitions
|
| 410 |
|
|
//
|
| 411 |
|
|
typedef enum {
|
| 412 |
|
|
// Step
|
| 413 |
|
|
AM_PROPERTY_FRAMESTEP_STEP = 0x01,
|
| 414 |
|
|
AM_PROPERTY_FRAMESTEP_CANCEL = 0x02,
|
| 415 |
|
|
|
| 416 |
|
|
// S_OK for these 2 means we can - S_FALSE if we can't
|
| 417 |
|
|
AM_PROPERTY_FRAMESTEP_CANSTEP = 0x03,
|
| 418 |
|
|
AM_PROPERTY_FRAMESTEP_CANSTEPMULTIPLE = 0x04
|
| 419 |
|
|
} AM_PROPERTY_FRAMESTEP;
|
| 420 |
|
|
|
| 421 |
|
|
typedef struct _AM_FRAMESTEP_STEP
|
| 422 |
|
|
{
|
| 423 |
|
|
// 1 means step 1 frame forward
|
| 424 |
|
|
// 0 is invalid
|
| 425 |
|
|
// n (n > 1) means skip n - 1 frames and show the nth
|
| 426 |
|
|
DWORD dwFramesToStep;
|
| 427 |
|
|
} AM_FRAMESTEP_STEP;
|
| 428 |
|
|
|
| 429 |
|
|
#ifdef __cplusplus
|
| 430 |
|
|
}
|
| 431 |
|
|
#endif // __cplusplus
|
| 432 |
|
|
#endif // __AMVIDEO__
|
| 433 |
|
|
|
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| 
Revision Log