//
// Copyright (c) Microsoft Corporation. All rights reserved.

cpp_quote("/* Copyright (c) Microsoft Corporation. All rights reserved.*/")

///////////////////////////////////////////////////////////////////////////
// msp.idl : IDL source for Media Service Provider interface
/////////////////////////////////////////////////////////////////////////////

#ifndef __MEDIA_STREAM_PROVIDER_IDL__
#define __MEDIA_STREAM_PROVIDER_IDL__

import "tapi3if.idl";

/////////////////////////////////////////////////////////////////////////////
// Forward declarations
/////////////////////////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////////////////////////
// Type definitions
/////////////////////////////////////////////////////////////////////////////

typedef long * MSP_HANDLE;

typedef enum
{
    ADDRESS_TERMINAL_AVAILABLE,   // new terminal arrived via PNP
    //    ITTerminal *

    ADDRESS_TERMINAL_UNAVAILABLE, // terminal gone via PNP
    //    ITTerminal *

} MSP_ADDRESS_EVENT;

typedef enum
{
    // In each case the MSP fills in as much as much info as it can. Terminals
    // or error codes may not be available, in which case the MSP fills in zero.
    // The bare-bones info needed is indicated here.

    CALL_NEW_STREAM, // - a new stream is created by the call. The app can
    // choose to select a terminal or delete the stream from the call.
    //    ITStream * 

    CALL_STREAM_FAIL, // - setup of the stream failed or the stream fails to start.
    //    ITStream * 
    //    Error code

    CALL_TERMINAL_FAIL, // - The terminal failed to connect.    
    //    ITTerminal *
    //    Error code

    CALL_STREAM_NOT_USED, // - The stream is not used in the call (the remote
    // party rejected it).
    //    ITStream *

    CALL_STREAM_ACTIVE, // - The app needs this event to decide when a
    // stream can be used to send and receive data. 
    // It is fired when the streams enter running state 
    // (the timing of which is determined by the TSP).
    //    ITStream *

    CALL_STREAM_INACTIVE // - No more data can be sent to or received from
    // this stream. This happens when a send stream
    // has sent all its data, or when a receive stream
    // stops receiving data.
    //    ITStream *

} MSP_CALL_EVENT;

typedef enum
{
    CALL_CAUSE_UNKNOWN,

    CALL_CAUSE_BAD_DEVICE,
    // a bad device caused failure, for either STREAM_FAIL or TERMINAL_FAIL.

    CALL_CAUSE_CONNECT_FAIL,
    // either connecting the stream failed or connecting the terminal failed.
    // Note, if a terminal can not be connected to a stream, the app will get
    // a TERMINAL_FAIL event with CMC_CONNECT_FAIL. If this stream failed
    // because the terminal is the only one to use, the app will also get a
    // STREAM_FAIL event with CMC_CONNECT_FAIL.

    CALL_CAUSE_LOCAL_REQUEST,
    // the event is the result of the app’s calling a method on the stream.

    CALL_CAUSE_REMOTE_REQUEST,
    // the event is the result of the remote endpoint’s request.

    CALL_CAUSE_MEDIA_TIMEOUT,
    // the media that carries the stream is temporarily not available.

    CALL_CAUSE_MEDIA_RECOVERED,
    // the media goes back to normal from a temporary deny of service.

	CALL_CAUSE_QUALITY_OF_SERVICE
	// the event is because qos does/doesn't allow the media to send.

} MSP_CALL_EVENT_CAUSE;

typedef enum
{
    ME_ADDRESS_EVENT,
    ME_CALL_EVENT,
    ME_TSP_DATA,
    ME_PRIVATE_EVENT,
    ME_ASR_TERMINAL_EVENT,
    ME_TTS_TERMINAL_EVENT,
    ME_FILE_TERMINAL_EVENT,
    ME_TONE_TERMINAL_EVENT
} MSP_EVENT;


typedef struct
{
    DWORD               dwSize;         // total size
    MSP_EVENT           Event;          // event type
    MSP_HANDLE          hCall;          // may be NULL

    [switch_type(MSP_EVENT), switch_is((MSP_EVENT)Event)]
    union
    {
        [case(ME_ADDRESS_EVENT)] 
        struct
        {
            MSP_ADDRESS_EVENT   Type;
            ITTerminal        * pTerminal;

        } MSP_ADDRESS_EVENT_INFO;

        [case(ME_CALL_EVENT)] 
        struct 
        {
            MSP_CALL_EVENT         Type;
            MSP_CALL_EVENT_CAUSE   Cause;
            ITStream             * pStream;
            ITTerminal           * pTerminal;
            HRESULT                hrError;

        } MSP_CALL_EVENT_INFO;

        [case(ME_TSP_DATA)] 
        struct
        {
            DWORD               dwBufferSize;
            BYTE                pBuffer[1];

        } MSP_TSP_DATA;

        [case(ME_PRIVATE_EVENT)]
        struct
        {
            IDispatch         * pEvent;
            long                lEventCode;

        } MSP_PRIVATE_EVENT_INFO;

        [case(ME_FILE_TERMINAL_EVENT)]
        struct
        {
            ITTerminal                      * pParentFileTerminal;
            ITFileTrack                     * pFileTrack;
            TERMINAL_MEDIA_STATE              TerminalMediaState;
            FT_STATE_EVENT_CAUSE              ftecEventCause;
            HRESULT                           hrErrorCode;
        } MSP_FILE_TERMINAL_EVENT_INFO;

        [case(ME_ASR_TERMINAL_EVENT)]
        struct
        {
            ITTerminal                      * pASRTerminal;
            HRESULT                           hrErrorCode;
        } MSP_ASR_TERMINAL_EVENT_INFO;

        [case(ME_TTS_TERMINAL_EVENT)]
        struct
        {
            ITTerminal                      * pTTSTerminal;
            HRESULT                           hrErrorCode;
        } MSP_TTS_TERMINAL_EVENT_INFO;

        [case(ME_TONE_TERMINAL_EVENT)]
        struct
        {
            ITTerminal                      * pToneTerminal;
            HRESULT                           hrErrorCode;
        } MSP_TONE_TERMINAL_EVENT_INFO;
    };

} MSP_EVENT_INFO;


/////////////////////////////////////////////////////////////////////////////
// Interface definitions
/////////////////////////////////////////////////////////////////////////////

[
    uuid(6E0887BE-BA1A-492e-BD10-4020EC5E33E0),
    helpstring("ITPluggableTerminalEventSink"),
    pointer_default(unique)
]
interface ITPluggableTerminalEventSink : IUnknown
{
    HRESULT FireEvent(
        [in] const MSP_EVENT_INFO *pMspEventInfo
        );
}

[
    uuid(F7115709-A216-4957-A759-060AB32A90D1),
    helpstring("ITPluggableTerminalEventSinkRegistration"),
    pointer_default(unique)
]
interface ITPluggableTerminalEventSinkRegistration : IUnknown
{
    HRESULT RegisterSink(
        [in] ITPluggableTerminalEventSink* pEventSink
        );

    HRESULT UnregisterSink(
        );
}

[
    uuid(EE3BD600-3868-11D2-A045-00C04FB6809F),
    helpstring("ITMSPAddress Interface"),
    pointer_default(unique)
]
interface ITMSPAddress : IUnknown
{
    HRESULT Initialize(
        [in] MSP_HANDLE hEvent
        );

    HRESULT Shutdown();

    HRESULT CreateMSPCall(
        [in] MSP_HANDLE hCall,
        [in] DWORD dwReserved,
        [in] DWORD dwMediaType,
        [in] IUnknown * pOuterUnknown,
        [out] IUnknown ** ppStreamControl
        );

    HRESULT ShutdownMSPCall(
        [in] IUnknown * pStreamControl
        );

    HRESULT ReceiveTSPData(
        [in] IUnknown * pMSPCall,
        [in, size_is(dwSize)] BYTE * pBuffer,
        [in] DWORD dwSize
        );

    HRESULT GetEvent(
        [in,out] DWORD * pdwSize,
        [in, out, size_is(*pdwSize)] byte * pEventBuffer
        );

}



#endif // __MEDIA_STREAM_PROVIDER_IDL__