Source code of Windows XP (NT5)
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//==========================================================================;
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
// PURPOSE.
//
// Copyright (c) 1992 - 1998 Microsoft Corporation. All Rights Reserved.
//
//--------------------------------------------------------------------------;
//
// list of additional (perhaps standard someday) Quartz event codes
// and the expected params
//
#define EC_SKIP_FRAMES 0x25
// ( nFramesToSkip, IFrameSkipResultCallback) : internal
// Get the filter graph to seek accuratley.
#define EC_PLEASE_REOPEN 0x40
// (void, void) : application
// Something has changed enough that the graph should be re-rendered.
#define EC_STATUS 0x41
// ( BSTR, BSTR) : application
// Two arbitrary strings, a short one and a long one.
#define EC_MARKER_HIT 0x42
// (int, void) : application
// The specified "marker #" has just been passed
#define EC_LOADSTATUS 0x43
// (int, void) : application
// Sent when various points during the loading of a network file are reached
#define EC_FILE_CLOSED 0x44
// (void, void) : application
// Sent when the file is involuntarily closed, i.e. by a network server shutdown
#define EC_ERRORABORTEX 0x45
// ( HRESULT, BSTR ) : application
// Operation aborted because of error. Additional information available.
// status codes for EC_LOADSTATUS....
#define AM_LOADSTATUS_CLOSED 0x0000
#define AM_LOADSTATUS_LOADINGDESCR 0x0001
#define AM_LOADSTATUS_LOADINGMCAST 0x0002
#define AM_LOADSTATUS_LOCATING 0x0003
#define AM_LOADSTATUS_CONNECTING 0x0004
#define AM_LOADSTATUS_OPENING 0x0005
#define AM_LOADSTATUS_OPEN 0x0006
#define EC_NEW_PIN 0x20
#define EC_RENDER_FINISHED 0x21
#define EC_EOS_SOON 0x046
// (void, void) : application
// sent when the source filter is about to deliver an EOS downstream....
#define EC_CONTENTPROPERTY_CHANGED 0x47
// (ULONG, void)
// Sent when a streaming media filter recieves a change in stream description information.
// the UI is expected to re-query for the changed property in response
#define AM_CONTENTPROPERTY_TITLE 0x0001
#define AM_CONTENTPROPERTY_AUTHOR 0x0002
#define AM_CONTENTPROPERTY_COPYRIGHT 0x0004
#define AM_CONTENTPROPERTY_DESCRIPTION 0x0008
#define EC_BANDWIDTHCHANGE 0x48
// (WORD, long) : application
// sent when the bandwidth of the streaming data has changed. First parameter
// is the new level of bandwidth. Second is the MAX number of levels. Second
// parameter may be 0, if the max levels could not be determined.
#define EC_VIDEOFRAMEREADY 0x49
// (void, void) : application
// sent to notify the application that the first video frame is about to be drawn
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