1 /*

     2     oscpack -- Open Sound Control packet manipulation library

     3     http://www.audiomulch.com/~rossb/oscpack

     4 

     5     Copyright (c) 2004-2005 Ross Bencina <rossb@audiomulch.com>

     6 

     7     Permission is hereby granted, free of charge, to any person obtaining

     8     a copy of this software and associated documentation files

     9     (the "Software"), to deal in the Software without restriction,

    10     including without limitation the rights to use, copy, modify, merge,

    11     publish, distribute, sublicense, and/or sell copies of the Software,

    12     and to permit persons to whom the Software is furnished to do so,

    13     subject to the following conditions:

    14 

    15     The above copyright notice and this permission notice shall be

    16     included in all copies or substantial portions of the Software.

    17 

    18     Any person wishing to distribute modifications to the Software is

    19     requested to send the modifications to the original developer so that

    20     they can be incorporated into the canonical version.

    21 

    22     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

    23     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

    24     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

    25     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR

    26     ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF

    27     CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

    28     WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

    29 */

    30 #ifndef INCLUDED_OSCOUTBOUNDPACKET_H

    31 #define INCLUDED_OSCOUTBOUNDPACKET_H

    32 

    33 #include "OscTypes.h"

    34 #include "OscException.h"

    35 

    36 

    37 namespace osc{

    38 

    39 class OutOfBufferMemoryException : public Exception{

    40 public:

    41     OutOfBufferMemoryException( const char *w="out of buffer memory" )

    42         : Exception( w ) {}

    43 };

    44 

    45 class BundleNotInProgressException : public Exception{

    46 public:

    47     BundleNotInProgressException(

    48             const char *w="call to EndBundle when bundle is not in progress" )

    49         : Exception( w ) {}

    50 };

    51 

    52 class MessageInProgressException : public Exception{

    53 public:

    54     MessageInProgressException(

    55             const char *w="opening or closing bundle or message while message is in progress" )

    56         : Exception( w ) {}

    57 };

    58 

    59 class MessageNotInProgressException : public Exception{

    60 public:

    61     MessageNotInProgressException(

    62             const char *w="call to EndMessage when message is not in progress" )

    63         : Exception( w ) {}

    64 };

    65 

    66 

    67 class OutboundPacketStream{

    68 public:

    69     OutboundPacketStream( char *buffer, unsigned long capacity );

    70     ~OutboundPacketStream();

    71 

    72     void Clear();

    73 

    74     unsigned int Capacity() const;

    75 

    76     // invariant: size() is valid even while building a message.

    77     unsigned int Size() const;

    78 

    79     const char *Data() const;

    80 

    81     // indicates that all messages have been closed with a matching EndMessage

    82     // and all bundles have been closed with a matching EndBundle

    83     bool IsReady() const;

    84 

    85     bool IsMessageInProgress() const;

    86     bool IsBundleInProgress() const;

    87 

    88     OutboundPacketStream& operator<<( const BundleInitiator& rhs );

    89     OutboundPacketStream& operator<<( const BundleTerminator& rhs );

    90     

    91     OutboundPacketStream& operator<<( const BeginMessage& rhs );

    92     OutboundPacketStream& operator<<( const MessageTerminator& rhs );

    93 

    94     OutboundPacketStream& operator<<( bool rhs );

    95     OutboundPacketStream& operator<<( const NilType& rhs );

    96     OutboundPacketStream& operator<<( const InfinitumType& rhs );

    97     OutboundPacketStream& operator<<( int32 rhs );

    98 

    99 #ifndef __x86_64__

   100     OutboundPacketStream& operator<<( int rhs )

   101             { *this << (int32)rhs; return *this; }

   102 #endif

   103 

   104     OutboundPacketStream& operator<<( float rhs );

   105     OutboundPacketStream& operator<<( char rhs );

   106     OutboundPacketStream& operator<<( const RgbaColor& rhs );

   107     OutboundPacketStream& operator<<( const MidiMessage& rhs );

   108     OutboundPacketStream& operator<<( int64 rhs );

   109     OutboundPacketStream& operator<<( const TimeTag& rhs );

   110     OutboundPacketStream& operator<<( double rhs );

   111     OutboundPacketStream& operator<<( const char* rhs );

   112     OutboundPacketStream& operator<<( const Symbol& rhs );

   113     OutboundPacketStream& operator<<( const Blob& rhs );

   114 

   115 private:

   116 

   117     char *BeginElement( char *beginPtr );

   118     void EndElement( char *endPtr );

   119 

   120     bool ElementSizeSlotRequired() const;

   121     void CheckForAvailableBundleSpace();

   122     void CheckForAvailableMessageSpace( const char *addressPattern );

   123     void CheckForAvailableArgumentSpace( long argumentLength );

   124 

   125     char *data_;

   126     char *end_;

   127 

   128     char *typeTagsCurrent_; // stored in reverse order

   129     char *messageCursor_;

   130     char *argumentCurrent_;

   131 

   132     // elementSizePtr_ has two special values: 0 indicates that a bundle

   133     // isn't open, and elementSizePtr_==data_ indicates that a bundle is

   134     // open but that it doesn't have a size slot (ie the outermost bundle)

   135     uint32 *elementSizePtr_;

   136 

   137     bool messageIsInProgress_;

   138 };

   139 

   140 } // namespace osc

   141 

   142 #endif /* INCLUDED_OSC_OUTBOUND_PACKET_H */