payloadtype.h

ortp协议栈（实时传输协议）

/*
  The oRTP LinPhone RTP library intends to provide basics for a RTP stack.
  Copyright (C) 2001  Simon MORLAT [e-mail]

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#ifndef PAYLOADTYPE_H
#define PAYLOADTYPE_H
#include "rtpport.h"

struct _PayloadType
{
	gint type;
	#define PAYLOAD_AUDIO_CONTINUOUS 0
	#define PAYLOAD_AUDIO_PACKETIZED 1
	#define	PAYLOAD_VIDEO 2
	#define PAYLOAD_OTHER 3  /* ?? */
	gint clock_rate;
	double bytes_per_sample;		/* in case of continuous audio data */
	char *zero_pattern;
	gint pattern_length;
	/* other usefull information */
	gint normal_bitrate;	/*in bit/s */
	char *mime_type;
	guint32 flags;
};

typedef struct _PayloadType PayloadType;
	
struct _RtpProfile
{
	char *name;
	PayloadType *payload[127];
};

typedef struct _RtpProfile RtpProfile;

extern RtpProfile av_profile;

#define rtp_profile_get_name(profile) 	(profile)->name
#define rtp_profile_set_name(profile,nm) 	(profile)->name=(nm)
#define rtp_profile_set_payload(profile,index,pt)  (profile)->payload[(index)]=(pt)
#define rtp_profile_clear_payload(profile,index)	(profile)->payload[(index)]=NULL
#define rtp_profile_clear_all(profile)	memset((void*)(profile),0,sizeof(RtpProfile))
#define rtp_profile_get_payload(profile,index)	((profile)->payload[(index)])

#endif