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-//------------------------------------------------------------------------------
-// File: EvCode.h
-//
-// Desc: List of standard Quartz event codes and the expected params.
-//
-// Copyright (c) 1992 - 2001, Microsoft Corporation. All rights reserved.
-//------------------------------------------------------------------------------
-
-
-// Event codes are broken into two groups
-// -- system event codes
-// -- extension event codes
-// All system event codes are below EC_USER
-
-#define EC_SYSTEMBASE 0x00
-#define EC_USER 0x8000
-
-// System-defined event codes
-// ==========================
-//
-// There are three types of system-defined event codes:
-//
-// 1. Those which are always passed through to the application
-// (To be collected by calls to GetEvent or within WaitForCompletion.)
-// (e.g. EC_ERRORABORT, EC_USERABORT.)
-//
-// 2. Those which are pure internal and will never be passed to
-// the application. (e.g. EC_SHUTDOWN)
-//
-// 3. Those which have default handling. Default handing implies that
-// the event is not passed to the application. However, default
-// handling may be canceled by calling
-// IMediaEvent::CancelDefaultHandling. If the default handling is
-// cancelled in this way, then the message will be delivered to the
-// application and the application must action it appropriately.
-// Default handling can be restored by calling RestoreDefaultHandling.
-//
-// We will refer to these events as application, internal and defaulted
-// events respectively.
-//
-// System-defined events may have interface pointers, BSTR's, etc passed
-// as parameters. It is therefore essential that, for any message
-// retrieved using GetEvent, a matching call to FreeEventParams is made
-// to ensure that relevant interfaces are released and storage freed.
-// Failure to call FreeEventParams will result in memory leaks, if not
-// worse.
-//
-// Filters sending these messages to the filter graph should not AddRef()
-// any interfaces that they may pass as parameters. The filter graph
-// manager will AddRef them if required. E.g. if the event is to be queued
-// for the application or queued to a worker thread.
-
-// Each event listed below is immediately followed by a parameter list
-// detailing the types of the parameters associated with the message,
-// and an indication of whether the message is an application, internal
-// or defaulted message. This is then followed by a short description.
-// The use of "void" in the parameter list implies that the parameter is not
-// used. Such parameters should be zero.
-
-// Other defined EC_ regions:
-// DVD event codes 0x0100 - 0x0150 (dvdevcod.h)
-// audio device event codes 0x0200 - 0x0250 (audevcod.h)
-// WindowsMedia SDK-originated events 0x0251 - 0x0300 (see below)
-// MSVIDCTL 0x0301 - 0x0325 (msvidctl.idl)
-// stream buffer engine (PVR) 0x0326 - 0x0350 (sbe.idl)
-
-#define EC_COMPLETE 0x01
-// ( HRESULT, void ) : defaulted (special)
-// Signals the completed playback of a stream within the graph. This message
-// is sent by renderers when they receive end-of-stream. The default handling
-// of this message results in a _SINGLE_ EC_COMPLETE being sent to the
-// application when ALL of the individual renderers have signaled EC_COMPLETE
-// to the filter graph. If the default handing is canceled, the application
-// will see all of the individual EC_COMPLETEs.
-
-
-#define EC_USERABORT 0x02
-// ( void, void ) : application
-// In some sense, the user has requested that playback be terminated.
-// This message is typically sent by renderers that render into a
-// window if the user closes the window into which it was rendering.
-// It is up to the application to decide if playback should actually
-// be stopped.
-
-
-#define EC_ERRORABORT 0x03
-// ( HRESULT, void ) : application
-// Operation aborted because of error
-
-
-#define EC_TIME 0x04
-// ( DWORD, DWORD ) : application
-// The requested reference time occurred. (This event is currently not used).
-// lParam1 is low dword of ref time, lParam2 is high dword of reftime.
-
-
-#define EC_REPAINT 0x05
-// ( IPin * (could be NULL), void ) : defaulted
-// A repaint is required - lParam1 contains the (IPin *) that needs the data
-// to be sent again. Default handling is: if the output pin which the IPin is
-// attached to supports the IMediaEventSink interface then it will be called
-// with the EC_REPAINT first. If that fails then normal repaint processing is
-// done by the filter graph.
-
-
-// Stream error notifications
-#define EC_STREAM_ERROR_STOPPED 0x06
-#define EC_STREAM_ERROR_STILLPLAYING 0x07
-// ( HRESULT, DWORD ) : application
-// lParam 1 is major code, lParam2 is minor code, either may be zero.
-
-
-#define EC_ERROR_STILLPLAYING 0x08
-// ( HRESULT, void ) : application
-// The filter graph manager may issue Run's to the graph asynchronously.
-// If such a Run fails, EC_ERROR_STILLPLAYING is issued to notify the
-// application of the failure. The state of the underlying filters
-// at such a time will be indeterminate - they will all have been asked
-// to run, but some are almost certainly not.
-
-
-#define EC_PALETTE_CHANGED 0x09
-// ( void, void ) : application
-// notify application that the video palette has changed
-
-
-#define EC_VIDEO_SIZE_CHANGED 0x0A
-// ( DWORD, void ) : application
-// Sent by video renderers.
-// Notifies the application that the native video size has changed.
-// LOWORD of the DWORD is the new width, HIWORD is the new height.
-
-
-#define EC_QUALITY_CHANGE 0x0B
-// ( void, void ) : application
-// Notify application that playback degradation has occurred
-
-
-#define EC_SHUTTING_DOWN 0x0C
-// ( void, void ) : internal
-// This message is sent by the filter graph manager to any plug-in
-// distributors which support IMediaEventSink to notify them that
-// the filter graph is starting to shutdown.
-
-
-#define EC_CLOCK_CHANGED 0x0D
-// ( void, void ) : application
-// Notify application that the clock has changed.
-// (i.e. SetSyncSource has been called on the filter graph and has been
-// distributed successfully to the filters in the graph.)
-
-
-#define EC_PAUSED 0x0E
-// ( HRESULT, void ) : application
-// Notify application the previous pause request has completed
-
-
-#define EC_OPENING_FILE 0x10
-#define EC_BUFFERING_DATA 0x11
-// ( BOOL, void ) : application
-// lParam1 == 1 --> starting to open file or buffer data
-// lParam1 == 0 --> not opening or buffering any more
-// (This event does not appear to be used by ActiveMovie.)
-
-
-#define EC_FULLSCREEN_LOST 0x12
-// ( void, IBaseFilter * ) : application
-// Sent by full screen renderers when switched away from full screen.
-// IBaseFilter may be NULL.
-
-
-#define EC_ACTIVATE 0x13
-// ( BOOL, IBaseFilter * ) : internal
-// Sent by video renderers when they lose or gain activation.
-// lParam1 is set to 1 if gained or 0 if lost
-// lParam2 is the IBaseFilter* for the filter that is sending the message
-// Used for sound follows focus and full-screen switching
-
-
-#define EC_NEED_RESTART 0x14
-// ( void, void ) : defaulted
-// Sent by renderers when they regain a resource (e.g. audio renderer).
-// Causes a restart by Pause/put_Current/Run (if running).
-
-
-#define EC_WINDOW_DESTROYED 0x15
-// ( IBaseFilter *, void ) : internal
-// Sent by video renderers when the window has been destroyed. Handled
-// by the filter graph / distributor telling the resource manager.
-// lParam1 is the IBaseFilter* of the filter whose window is being destroyed
-
-
-#define EC_DISPLAY_CHANGED 0x16
-// ( IPin *, void ) : internal
-// Sent by renderers when they detect a display change. the filter graph
-// will arrange for the graph to be stopped and the pin send in lParam1
-// to be reconnected. by being reconnected it allows a renderer to reset
-// and connect with a more appropriate format for the new display mode
-// lParam1 contains an (IPin *) that should be reconnected by the graph
-
-
-#define EC_STARVATION 0x17
-// ( void, void ) : defaulted
-// Sent by a filter when it detects starvation. Default handling (only when
-// running) is for the graph to be paused until all filters enter the
-// paused state and then run. Normally this would be sent by a parser or source
-// filter when too little data is arriving.
-
-
-#define EC_OLE_EVENT 0x18
-// ( BSTR, BSTR ) : application
-// Sent by a filter to pass a text string to the application.
-// Conventionally, the first string is a type, and the second a parameter.
-
-
-#define EC_NOTIFY_WINDOW 0x19
-// ( HWND, void ) : internal
-// Pass the window handle around during pin connection.
-
-#define EC_STREAM_CONTROL_STOPPED 0x1A
-// ( IPin * pSender, DWORD dwCookie )
-// Notification that an earlier call to IAMStreamControl::StopAt
-// has now take effect. Calls to the method can be marked
-// with a cookie which is passed back in the second parameter,
-// allowing applications to easily tie together request
-// and completion notifications.
-//
-// NB: IPin will point to the pin that actioned the Stop. This
-// may not be the pin that the StopAt was sent to.
-
-#define EC_STREAM_CONTROL_STARTED 0x1B
-// ( IPin * pSender, DWORD dwCookie )
-// Notification that an earlier call to IAMStreamControl::StartAt
-// has now take effect. Calls to the method can be marked
-// with a cookie which is passed back in the second parameter,
-// allowing applications to easily tie together request
-// and completion notifications.
-//
-// NB: IPin will point to the pin that actioned the Start. This
-// may not be the pin that the StartAt was sent to.
-
-#define EC_END_OF_SEGMENT 0x1C
-//
-// ( const REFERENCE_TIME *pStreamTimeAtEndOfSegment, DWORD dwSegmentNumber )
-//
-// pStreamTimeAtEndOfSegment
-// pointer to the accumulated stream clock
-// time since the start of the segment - this is directly computable
-// as the sum of the previous and current segment durations (Stop - Start)
-// and the rate applied to each segment
-// The source add this time to the time within each segment to get
-// a total elapsed time
-//
-// dwSegmentNumber
-// Segment number - starts at 0
-//
-// Notifies that a segment end has been reached when the
-// AM_SEEKING_Segment flags was set for IMediaSeeking::SetPositions
-// Passes in an IMediaSeeking interface to allow the next segment
-// to be defined by the application
-
-#define EC_SEGMENT_STARTED 0x1D
-//
-// ( const REFERENCE_TIME *pStreamTimeAtStartOfSegment, DWORD dwSegmentNumber)
-//
-// pStreamTimeAtStartOfSegment
-// pointer to the accumulated stream clock
-// time since the start of the segment - this is directly computable
-// as the sum of the previous segment durations (Stop - Start)
-// and the rate applied to each segment
-//
-// dwSegmentNumber
-// Segment number - starts at 0
-//
-// Notifies that a new segment has been started.
-// This is sent synchronously by any entity that will issue
-// EC_END_OF_SEGMENT when a new segment is started
-// (See IMediaSeeking::SetPositions - AM_SEEKING_Segment flag)
-// It is used to compute how many EC_END_OF_SEGMENT notifications
-// to expect at the end of a segment and as a consitency check
-
-
-#define EC_LENGTH_CHANGED 0x1E
-// (void, void)
-// sent to indicate that the length of the "file" has changed
-
-#define EC_DEVICE_LOST 0x1f
-// (IUnknown, 0)
-//
-// request window notification when the device is available again
-// (through WM_DEVICECHANGED messages registered with
-// RegisterDeviceNotification; see IAMDeviceRemoval interface)
-
-#define EC_STEP_COMPLETE 0x24
-// (BOOL bCacelled, void)
-// Step request complete
-// if bCancelled is TRUE the step was cancelled. This can happen
-// if the application issued some control request or because there
-// was a mode change etc etc
-
-// Event code 25 is reserved for future use.
-
-#define EC_TIMECODE_AVAILABLE 0x30
-// Sent by filter supporting timecode
-// Param1 has a pointer to the sending object
-// Param2 has the device ID of the sending object
-
-#define EC_EXTDEVICE_MODE_CHANGE 0x31
-// Sent by filter supporting IAMExtDevice
-// Param1 has the new mode
-// Param2 has the device ID of the sending object
-
-#define EC_STATE_CHANGE 0x32
-// ( FILTER_STATE, BOOL bInternal)
-// Used to notify the application of any state changes in the filter graph.
-// lParam1 is of type enum FILTER_STATE (defined in strmif.h) and indicates
-// the state of the filter graph.
-//
-// lParam2 == 0 indicates that the previous state change request has completed
-// & a change in application state.
-// lParam2 == 1 reserved for future use to indicate internal state changes.
-
-
-#define EC_GRAPH_CHANGED 0x50
-// Sent by filter to notify interesting graph changes
-
-#define EC_CLOCK_UNSET 0x51
-// ( void, void ) : application
-// Used to notify the filter graph to unset the current graph clock.
-// Has the affect of forcing the filter graph to reestablish the graph clock
-// on the next Pause/Run (note that this is only used by ksproxy, when the pin
-// of a clock providing filter is disconnected)
-
-#define EC_VMR_RENDERDEVICE_SET 0x53
-// (Render_Device type, void)
-// Identifies the type of rendering mechanism the VMR
-// is using to display video. Types used include:
-#define VMR_RENDER_DEVICE_OVERLAY 0x01
-#define VMR_RENDER_DEVICE_VIDMEM 0x02
-#define VMR_RENDER_DEVICE_SYSMEM 0x04
-
-
-#define EC_VMR_SURFACE_FLIPPED 0x54
-// (hr - Flip return code, void)
-// Identifies the VMR's allocator-presenter has called the DDraw flip api on
-// the surface being presented. This allows the VMR to keep its DX-VA table
-// of DDraw surfaces in sync with DDraws flipping chain.
-
-#define EC_VMR_RECONNECTION_FAILED 0x55
-// (hr - ReceiveConnection return code, void)
-// Identifies that an upstream decoder tried to perform a dynamic format
-// change and the VMR was unable to accept the new format.
-
-
-#define EC_PREPROCESS_COMPLETE 0x56
-// Sent by the WM ASF writer filter (WMSDK V9 version) to signal the completion
-// of a pre-process run when running in multipass encode mode.
-// Param1 = 0, Param2 = IBaseFilter ptr of sending filter
-
-#define EC_CODECAPI_EVENT 0x57
-// Sent by the Codec API when an event is encountered. Both the Data
-// must be freed by the recipient using CoTaskMemFree
-// Param1 = UserDataPointer, Param2 = VOID* Data
-
-//------------------------------------------
-//
-// BDA events:
-//
-// Event code 0x80 through 0x8f are reserved for BDA
-//
-
-
-//------------------------------------------
-//
-// WindowsMedia SDK filter-specific events:
-//
-//
-// Note that for EC_WMT_EVENT events the wmsdk-based filters use the following structure for
-// passing event parameters to the app:
-#ifndef AM_WMT_EVENT_DATA_DEFINED
-#define AM_WMT_EVENT_DATA_DEFINED
-typedef struct {
- HRESULT hrStatus; // status code
- void * pData; // event data
-} AM_WMT_EVENT_DATA;
-#endif
-//
-#define EC_WMT_EVENT_BASE 0x0251
-//
-#define EC_WMT_INDEX_EVENT EC_WMT_EVENT_BASE
-// WindowsMedia SDK-originated file indexing status, sent by WMSDK-based filters
-//
-// lParam1 is one of the enum WMT_STATUS messages listed below, sent by the WindowsMedia SDK
-// lParam2 is specific to the lParam event
-//
-// the following WMT_STATUS messages are sent for this event:
-// WMT_STARTED - lParam2 is 0
-// WMT_CLOSED - lParam2 is 0
-// WMT_INDEX_PROGRESS - lParam2 is a DWORD containing the progress percent complete
-//
-#define EC_WMT_EVENT EC_WMT_EVENT_BASE+1
-// WindowsMedia SDK-originated event, sent by WMSDK-based filters
-//
-// lParam1 is one of the enum WMT_STATUS messages listed below, sent by the WindowsMedia SDK
-// lParam2 is a pointer an AM_WMT_EVENT_DATA structure where,
-// hrStatus is the status code sent by the wmsdk
-// pData is specific to the lParam1 event
-//
-// the following WMT_STATUS messages are sent by the WMSDK Reader filter for this event:
-// WMT_NO_RIGHTS - pData is a pointer to a WCHAR string containing a challenge URL
-// WMT_ACQUIRE_LICENSE - lParam2 is a pointer to a WM_GET_LICENSE_DATA struct
-// WMT_NO_RIGHTS_EX - lParam2 is a pointer to a WM_GET_LICENSE_DATA struct
-// WMT_NEEDS_INDIVIDUALIZATION - lParam2 is NULL
-// WMT_INDIVIDUALIZE - lParam2 is a pointer to a WM_INDIVIDUALIZE_STATUS struct
-// the WMSDK (V9) ASF Writer filter will send this event in response to a wmsdk-signaled error during file
-// writing, along with the wmsdk WMT_STATUS error as the lParam1 and hrStatus embedded in the
-// AM_WMT_EVENT_DATA struct pointed to by the lParam2 pointer.
-//
-// end WMSDK-originated events
-//-----------------------------------------
-
-
-#define EC_BUILT 0x300
-// Sent to notify transition from unbuilt to built state
-
-
-#define EC_UNBUILT 0x301
-// Sent to notify transtion from built to unbuilt state