formats.h

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// Copyright (C) 2002-2015 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 Lesser General Public License
// along with GNU ccRTP.  If not, see <http://www.gnu.org/licenses/>.
//
// 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_

NAMESPACE_COMMONCPP

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

END_NAMESPACE

#endif  // ndef CCXX_RTP_FORMATS_H_