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re3/dxsdk/Include/DShowIDL/mixerocx.idl

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// Copyright (c) 1998 Microsoft Corporation. All Rights Reserved.
import "unknwn.idl";
// data id flags, used to notify the client whenever pertinent data changes
#define MIXER_DATA_ASPECT_RATIO 0x00000001 // picture aspect ratio changed
#define MIXER_DATA_NATIVE_SIZE 0x00000002 // native size of video changed
#define MIXER_DATA_PALETTE 0x00000004 // palette of video changed
// status flags defined here
#define MIXER_STATE_MASK 0x00000003 // use this mask with state status bits
#define MIXER_STATE_UNCONNECTED 0x00000000 // mixer is unconnected and stopped
#define MIXER_STATE_CONNECTED_STOPPED 0x00000001 // mixer is connected and stopped
#define MIXER_STATE_CONNECTED_PAUSED 0x00000002 // mixer is connected and paused
#define MIXER_STATE_CONNECTED_PLAYING 0x00000003 // mixer is connected and playing
interface IMixerOCXNotify;
interface IMixerOCX;
[
object,
uuid(81A3BD31-DEE1-11d1-8508-00A0C91F9CA0),
helpstring("IMixerOCXNotify Interface"),
pointer_default(unique)
]
interface IMixerOCXNotify : IUnknown
{
// invalidates the rect
HRESULT OnInvalidateRect([in] LPCRECT lpcRect);
// informs that a status change has occured, new status bits provided in ulStatusFlags
HRESULT OnStatusChange([in] ULONG ulStatusFlags);
// informs that data parameters, whose id is present in ilDataFlags has changed
HRESULT OnDataChange([in] ULONG ulDataFlags);
};
[
object,
uuid(81A3BD32-DEE1-11d1-8508-00A0C91F9CA0),
helpstring("IMixerOCX Interface"),
pointer_default(unique)
]
interface IMixerOCX : IUnknown
{
// used to notify the mixer that the display mode has changed, the mixer handles this
// asynchronously and the calls OnStatusChange(MIXER_DISPLAYCHANGE_HANDLED) when processing
// is done
HRESULT OnDisplayChange([in] ULONG ulBitsPerPixel, [in] ULONG ulScreenWidth, [in] ULONG ulScreenHeight);
HRESULT GetAspectRatio([out] LPDWORD pdwPictAspectRatioX, [out] LPDWORD pdwPictAspectRatioY);
HRESULT GetVideoSize([out] LPDWORD pdwVideoWidth, [out] LPDWORD pdwVideoHeight);
HRESULT GetStatus([out] LPDWORD *pdwStatus);
// the dc provided here is not supposed to be cached. If apps have set a dc using
// SetDrawInfo, then it is illegal to provide a non NULL argument here
HRESULT OnDraw([in] HDC hdcDraw, [in] LPCRECT prcDraw);
// lpptTopLeftSC should be NULL unless MIXER_DRAW_DC_ONSCREEN is set to TRUE
// specifying a NULL value for lprcClip means no clipping
// lpptTopLeftSC - top left corner of surface/dc in screen coordinates
// prcDrawCC - draw rectangle in surface/dc coordinates
// lprcClip - clipping rect in surface/dc coordinates (optional)
HRESULT SetDrawRegion([in] LPPOINT lpptTopLeftSC, [in] LPCRECT prcDrawCC, [in] LPCRECT lprcClip);
// function to set the sink interface for client notification
HRESULT Advise([in] IMixerOCXNotify *pmdns);
// function to remove the sink interface
HRESULT UnAdvise();
};