/*
 *
 * @APPLE_LICENSE_HEADER_START@
 *
 * Copyright (c) 1999-2001 Apple Computer, Inc.  All Rights Reserved. The
 * contents of this file constitute Original Code as defined in and are
 * subject to the Apple Public Source License Version 1.2 (the 'License').
 * You may not use this file except in compliance with the License.  Please
 * obtain a copy of the License at http://www.apple.com/publicsource and
 * read it before using this file.
 *
 * This Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.  Please
 * see the License for the specific language governing rights and
 * limitations under the License.
 *
 *
 * @APPLE_LICENSE_HEADER_END@
 *
 */


/*
	This file defines a good file format to use for storing RTP streams.
	It is optimized for linear reads through the file, but also allows for
	seeking using a "Block Map", similar to a QuickTime sample table but more
	compressed.
	
	RTP PACKET FILE FORMAT DEFINITION:

	1 RTPFileHeader 
	__ SDP DATA __
	1 RTPFileTrackInfo per track
	__ BLOCK MAP__
	
	packet, packet, packet
	
	Each packet is:
	
	1 RTPFilePacket, followed by data
	
	No partial packets allowed between blocks, blocks should finish with a pad packet

*/ 


#ifndef __RTP_FILE_DEFS__
#define __RTP_FILE_DEFS__

#include "OSHeaders.h"

#define RTP_FILE_CURRENT_VERSION 0

typedef struct RTPFileHeader
{
	UInt32	fVersion;			// Version 0
	Float64 fMovieDuration;
	UInt32	fSDPLen;
	UInt32	fNumTracks;
	UInt32 	fMaxTrackID;
	UInt32 	fBlockMapSize;
	UInt32 	fDataStartPos;
	
} RTPFileHeader;

typedef struct RTPFileTrackInfo
{
	UInt32	fID;
	UInt32	fTimescale;
	UInt64 	fBytesInTrack;
	Float64 fDuration;
	
} RTPFileTrackInfo;

typedef struct RTPFilePacket
{
	UInt16 fTrackID;
	UInt16 fPacketLength;
	Float64 fTransmitTime;
	
} RTPFilePacket;

static const UInt32 kBlockSize = 32768;
static const UInt32 kBlockMask = 0xFFF8000;
static const UInt16 kPaddingBit = 0x8000;

#endif //__RTP_FILE_DEFS__
