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//***************************************************************************** // // Microsoft Windows Media // Copyright (C) Microsoft Corporation. All rights reserved. //// FileName: wmsdatapath.idl//// Abstract:////*****************************************************************************
cpp_quote("//*****************************************************************************") cpp_quote("//") cpp_quote("// Microsoft Windows Media") cpp_quote("// Copyright (C) Microsoft Corporation. All rights reserved.") cpp_quote("//")cpp_quote("// Automatically generated by Midl from wmsdatapath.idl" )cpp_quote("//")cpp_quote("// DO NOT EDIT THIS FILE.")cpp_quote("//")cpp_quote("//*****************************************************************************")
import "objidl.idl";import "nsscore.idl";import "DataContainer.idl";import "StreamDescription.idl";import "WMSPacket.idl";
interface IWMSPacketStreamer;interface IWMSPacketStreamerCallback;interface IWMSPushSource;interface IWMSPushSourceCallback;interface IWMSPushSink;interface IWMSPacketStreamDataContainer;
cpp_quote( "EXTERN_GUID( IID_IWMSPacketStreamer, 0x72527A81,0x1119,0x11d2,0x9E,0xEE,0x00,0x60,0x97,0xD2,0xD7,0xCF );" )cpp_quote( "EXTERN_GUID( IID_IWMSPacketStreamerCallback, 0x72527A82,0x1119,0x11d2,0x9E,0xEE,0x00,0x60,0x97,0xD2,0xD7,0xCF );" )cpp_quote( "EXTERN_GUID( IID_IWMSPushSource, 0x0B840593,0x115C,0x11d2,0x9E,0xEE,0x00,0x60,0x97,0xD2,0xD7,0xCF );" )cpp_quote( "EXTERN_GUID( IID_IWMSPushSourceCallback, 0xead035e4, 0xbe4a, 0x4a7a, 0xbc, 0x19, 0x5b, 0xb, 0x9e, 0x9, 0xd7, 0x4c );" )cpp_quote( "EXTERN_GUID( IID_IWMSPushSink, 0x0B840594,0x115C,0x11d2,0x9E,0xEE,0x00,0x60,0x97,0xD2,0xD7,0xCF );" )cpp_quote( "EXTERN_GUID( IID_IWMSPacketStreamDataContainer, 0xb1b6039, 0x572c, 0x11d2, 0x9e, 0xff, 0x0, 0x60, 0x97, 0xd2, 0xd7, 0xcf );" )
///////////////////////////////////////////////////////////////////////////////// These are the options for a seek and play command that are passed in// the command context to the play command.typedef [public] enum WMS_SEEK_AND_PLAY_TYPE{ WMSPlayFromCurrentPosition, WMSSeekToIFrameAndPlay, WMSSeekToPositionAndPlay,} WMS_SEEK_AND_PLAY_TYPE;
// These are the flags passed to a seek command.cpp_quote("#define WMS_SEEK_TO_IFRAME 0x0001")
////////////////////////////////////////////////////////////////////////////////// GENERIC PACKET STREAMER////////////////////////////////////////////////////////////////////////////////[ object, pointer_default(unique), uuid(72527A81-1119-11d2-9EEE-006097D2D7CF), version(9.0), helpstring("Contains methods for retrieving information on streams being sent down a data path and for controlling the streams being sent down a data path.")]interface IWMSPacketStreamer : IUnknown{ // This is called every time a source changes. This is called once // for a simple movie file, and called every time a server-side // playlist changes its output. [helpstring("Retrieves header information on streams that are being sent down the data path.")] HRESULT GetStreamInfo( [in] IWMSPacketStreamerCallback *pCallback, [in] QWORD qwContext );
// A parser will be smart about waiting until the next // iframe before sending data from a newly selected stream. [helpstring("Specifies the streams that are sent down the data path.")] HRESULT SelectStream( [in] IWMSCommandContext *pCommand, [in] IWMSStreamSwitchDescriptionList *pStreamSwitchDescList, [in] IWMSPacketStreamerCallback *pCallback, [in] QWORD qwContext );
// This affects all selected streams. It returns the min seek // point of all selected streams. // When the parser seeks to a point, it returns all frames // after and including the first iframe of the stream. This // lets us ignore pframes that are after the common seek point // but before the next iframe. [helpstring("Seeks to a specific offset in a multimedia stream.")] HRESULT Seek( [in] IWMSCommandContext *pCommand, [in] DWORD dwOffsetType, [in] QWORD qwOffset, [in] DWORD dwFlags, [in] IWMSPacketStreamerCallback *pCallback, [in] QWORD qwContext );
[helpstring("Reserved for future use.")] HRESULT ChangeStreamFormat( [in] IWMSCommandContext *pCommand, [in] IWMSPacketStreamerCallback *pCallback, [in] QWORD qwContext );
[helpstring("Reserved for future use.")] HRESULT Interrupt( [in] IWMSCommandContext *pCommand, [in] DWORD dwOptions, [in] IWMSPacketStreamerCallback *pCallback, [in] QWORD qwContext );
// Extended Commands [helpstring("Passes extended commands defined by a plug-in up the data path.")] HRESULT DoExtendedCommand( [in] LPWSTR szCommandName, [in] IWMSCommandContext *pCommand, [in] IWMSPacketStreamerCallback *pCallback, [in] QWORD qwContext );
// This releases internal references, possibly breaking // cyclic references. [helpstring("Called by the server when the data path is being shut down.")] HRESULT Shutdown();};
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////[ object, pointer_default(unique), uuid(72527A82-1119-11d2-9EEE-006097D2D7CF), version(9.0), helpstring("Contains methods that enable a plug-in to respond to IWMSPacketStreamer method calls.")]interface IWMSPacketStreamerCallback : IUnknown{ [helpstring("Called by the plug-in to respond to the IWMSPacketStreamer::GetStreamInfo method call.")] HRESULT OnGetStreamInfo( [in] HRESULT hr, [in] IWMSStreamHeaderList *pHeaderList, [in] IWMSContentDescriptionList *pContentDescription, [in] QWORD qwContext );
[helpstring("Called by the plug-in to respond to the IWMSPacketStreamer::Seek method call.")] HRESULT OnSeek( [in] HRESULT hr, [in] QWORD qwActualPosition, [in] QWORD qwContext );
[helpstring("Called by the plug-in to respond to the IWMSPacketStreamer::SelectStream method call.")] HRESULT OnSelectStream( [in] HRESULT hr, [in] QWORD qwContext );
[helpstring("Reserved for future use.")] HRESULT OnChangeStreamFormat( [in] HRESULT hr, [in] QWORD qwContext );
[helpstring("Reserved for future use.")] HRESULT OnInterrupt( [in] HRESULT hr, [in] QWORD qwContext );
[helpstring("Called by the plug-in to respond to the IWMSPacketStreamer::DoExtendedCommand method call.")] HRESULT OnDoExtendedCommand( [in] HRESULT hr, [in] QWORD qwContext );};
////////////////////////////////////////////////////////////////////////////////// PACKET STREAM DATA CONTAINER//// Each live source will implement a storage system that allocates data// containers. Those data containers will implement IWMSPacketStreamer// and IWMSPacketStreamDataContainer in addition to IWMSDataContainer.//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////[ object, pointer_default(unique), uuid(0B1B6039-572C-11d2-9EFF-006097D2D7CF), version(9.0), helpstring("Contains methods to notify the server of stream signals and to determine the maximum packet size used by a data container.")]interface IWMSPacketStreamDataContainer : IUnknown{ [helpstring("Called by the server to indicate that it should be notified of stream signals.")] HRESULT SetStreamSignalHandler( [in] IWMSStreamSignalHandler *pStreamSignalHandler ); [helpstring("Retrieves the maximum packet size, in bytes, that is used by the data container.")] HRESULT GetMaxPacketSize( [out] DWORD *pdwMaxPacketSize );}
////////////////////////////////////////////////////////////////////////////////// PACKET PUSH INTERFACES////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////[ object, pointer_default(unique), uuid(0B840593-115C-11d2-9EEE-006097D2D7CF), version(9.0), helpstring("Contains methods that control the flow of data through a data path.")]interface IWMSPushSource : IUnknown{ [helpstring("Reserved for future use.")] HRESULT ConnectSink( [in] IWMSPushSink *pDataOutput );
[helpstring("Reserved for future use.")] HRESULT DisconnectSink();
// Call start each time you change the rate (ie, play to // fast-forward). A negative rate is rewind. [helpstring("Starts the flow of packets down a data path.")] HRESULT StartPushing( [in] IWMSCommandContext *pCommand, [in] double dblRate, [in] IWMSPushSourceCallback *pCallback, [in] QWORD qwContext );
[helpstring("Stops the flow of packets down a data path.")] HRESULT StopPushing( [in] IWMSCommandContext *pCommand, [in] IWMSPushSourceCallback *pCallback, [in] QWORD qwContext );
// This may or may not be implemented differently than StopPushing. [helpstring("Pauses the flow of packets down a data path.")] HRESULT PausePushing( [in] IWMSCommandContext *pCommand, [in] IWMSPushSourceCallback *pCallback, [in] QWORD qwContext ); [helpstring("Passes UDP resend requests up the data path.")] HRESULT ResendPacket( [in] IWMSCommandContext *pCommand, [in] DWORD dwPacketNum, [in] DWORD dwStreamNum );};
//////////////////////////////////////////////////////////////////////////////[ object, pointer_default(unique), uuid(EAD035E4-BE4A-4a7a-BC19-5B0B9E09D74C), version(9.0), helpstring("Contains methods that enable a plug-in to respond to IWMSPushSource method calls.")]interface IWMSPushSourceCallback : IUnknown{ [helpstring("Called by the plug-in to respond to the IWMSPushSource::StartPushing method call.")] HRESULT OnStartPushing( [in] HRESULT hr, [in] QWORD qwContext );
[helpstring("Called by the plug-in to respond to the IWMSPushSource::StopPushing method call.")] HRESULT OnStopPushing( [in] HRESULT hr, [in] QWORD qwContext );
[helpstring("Called by the plug-in to respond to the IWMSPushSource::PausePushing method call.")] HRESULT OnPausePushing( [in] HRESULT hr, [in] QWORD qwContext );};
//////////////////////////////////////////////////////////////////////////////[ object, pointer_default(unique), uuid(0B840594-115C-11d2-9EEE-006097D2D7CF), version(9.0), helpstring("Contains a method to request that a data path component process a packet list.")]interface IWMSPushSink : IUnknown{ [helpstring("Reserved for future use.")] HRESULT ConnectSource( [in] IWMSPushSource *pDataInput ); [helpstring("Reserved for future use.")] HRESULT DisconnectSource();
// The main method for moving data through the server. [helpstring("Requests that a data path component process a packet list.")] HRESULT ProcessPackets( [in] IWMSPacketList *pPacketList );};
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