/*

    File:       RTPMPComponentVideo.h

    Contains:   Declarations for Component Video RTPMediaPacketizer

    Copyright:  © 1997-1999 by Apple Computer, Inc., all rights reserved.

*/

#ifndef __RTPMPCOMPONENTVIDEO__

#define __RTPMPCOMPONENTVIDEO__

#pragma once

/* ---------------------------------------------------------------------------

 *      H E A D E R S

 * ---------------------------------------------------------------------------

 */

#include <QTStreamingComponents.h>

#include "ComponentVideoRTP.h"

/* ---------------------------------------------------------------------------

 *      D A T A T Y P E S

 * ---------------------------------------------------------------------------

 *

 *  An RTPMPComponentVideoInstanceData structure stores instance variables for

 *  a Component Video RTPMediaPacketizer instance.  The structure declares the

 *  following fields:

 *  

 *      itself                      the RTPMediaPacketizer instance that

 *                                  maintains this data structure

 *      

 *      itsBase                     the RTPMediaPacketizer to which the

 *                                  instance delegates calls

 *      

 *      itsFinalDerivation          the RTPMediaPacketizer instance to which

 *                                  the instance targets calls to itself

 *      

 *      itsInitialized              true when the instance has initialized the

 *                                  remaining fields

 *      

 *      itsSampleDescriptionSeed    the seed of the SampleDescription the

 *                                  instance is using for sample data

 *      

 *      itsMediaTimeScale           the TimeScale of the source sample data

 *      

 *      itsMediaTimeBase            the TimeBase passed to RTPMPSetTimeBase()

 *      

 *      itsFrameDataSize            number of octets in one frame of sample

 *                                  data

 *      

 *      itsPayloadDataSize          number of octets of sample data the

 *                                  instance will include in most payloads

 *      

 *      itsPacketBuilder            the RTPMPPacketBuilder the instance uses

 *                                  to contruct network packets

 *      

 *      itsPacketSizeLimit          the maximum allowable size, in octets, of

 *                                  payloads the instance may contruct

 *      

 *      itsPacketDurationLimit      the maximum allowable duration of sample

 *                                  the instance may encapsulate in a single

 *                                  payload

 *      

 *      itsPayloadHeader            precomputed values for header the instance

 *                                  includes with each payload

 *      

 */

typedef struct

{

    RTPMediaPacketizer      itself;

    RTPMediaPacketizer      itsBase;

    RTPMediaPacketizer      itsFinalDerivation;

    Boolean                 itsInitialized;

    UInt32                  itsSampleDescriptionSeed;

    TimeScale               itsMediaTimeScale;

    TimeBase                itsMediaTimeBase;

    UInt32                  itsFrameDataSize;

    UInt32                  itsPayloadDataSize;

    RTPPacketBuilder        itsPacketBuilder;

    UInt32                  itsPacketSizeLimit;

    UInt32                  itsPacketDurationLimit;

    ComponentVideoPayload   itsPayloadHeader;

} RTPMPComponentVideoInstanceData;

#endif /* __RTPMPCOMPONENTVIDEO__ */