formats.h

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// Copyright (C) 2002 Federico Montesino Pouzols <fedemp@altern.org>.
// 
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
// 
// This program 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 General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software 
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
// 
// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however    
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.    
//
// This exception applies only to the code released under the name GNU
// ccRTP.  If you copy code from other releases into a copy of GNU
// ccRTP, as the General Public License permits, the exception does
// not apply to the code that you add in this way.  To avoid misleading
// anyone as to the status of such modified files, you must delete
// this exception notice from them.
//
// If you write modifications of your own for GNU ccRTP, it is your choice
// whether to permit this exception to apply to your modifications.
// If you do not wish that, delete this exception notice.
//

#ifndef CCXX_RTP_FORMATS_H_
#define CCXX_RTP_FORMATS_H_

#ifdef CCXX_NAMESPACES
namespace ost {
#endif

typedef uint8 PayloadType;

const PayloadType ptINVALID = 128;

typedef enum {
        // Types for audio formats:
        sptPCMU = 0,        
        firstStaticPayloadType = sptPCMU,
        // 1016 static payload type is now deprecated. Type 1 is reserved.
        // spt1016,         ///< CELP audio (FED-STD 1016) (RFC 1890)
        sptG726_32 = 2,     
        sptGSM,             
        sptG723,            
        sptDVI4_8000,       
        sptDVI4_16000,      
        sptLPC,             
        sptPCMA,            
        sptG722,            
        sptL16_DUAL,        
        sptL16_MONO,        
        sptQCELP,           
        // Type 13 is reserved.
        sptMPA = 14,        
        sptG728,            
        sptDVI4_11025,      
        sptDVI4_22050,      
        sptG729,            
        // Type 19 is reserved. Types 20 - 23 are unassigned.
        lastStaticAudioPayloadType = sptG729,

        // Types for video formats:
        // Type 24 is unassigned.
        sptCELB = 25,       
        sptJPEG,            
        // Type 27 is unassigned.
        sptNV = 28,         
        // Types 29 and 30 are unassigned.
        sptH261 = 31,       
        sptMPV,             
        sptMP2T,            
        sptH263,            
        // Types 35 - 71 are unassigned.
        // Types 72 - 76 are reserved.
        // Types 96 - 127 are dynamic.
        lastStaticPayloadType = sptH263
}       StaticPayloadType;

class __EXPORT PayloadFormat
{
public:
        inline PayloadType getPayloadType() const
        { return payloadType; }

        inline uint32 getRTPClockRate() const
        { return RTPClockRate; }
        
protected:
        PayloadFormat()
        { }
        
        inline virtual ~PayloadFormat() 
        { }

        inline void setPayloadType(PayloadType pt)
        { payloadType = pt; }

        inline void setRTPClockRate(uint32 rate)
        { RTPClockRate = rate; }

        // default clock rate
        static const uint32 defaultRTPClockRate;

private:
        PayloadType payloadType;    
        uint32 RTPClockRate;        
};

class __EXPORT StaticPayloadFormat : public PayloadFormat
{
public:
        StaticPayloadFormat(StaticPayloadType type);
        
private:
        static uint32 staticAudioTypesRates[lastStaticAudioPayloadType - 
                                            firstStaticPayloadType + 1];
};

class __EXPORT DynamicPayloadFormat : public PayloadFormat
{
public:
        DynamicPayloadFormat(PayloadType type, uint32 rate);
};
 // payload 

#ifdef  CCXX_NAMESPACES
}
#endif

#endif  // ndef CCXX_RTP_FORMATS_H_