Internet DRAFT - draft-hamalainen-mobile-xmf-mimetype

draft-hamalainen-mobile-xmf-mimetype



                                                          M. Hamalainen 
Internet Draft                                                    Nokia 
Document: draft-hamalainen-mobile-xmf-mimetype-00.txt          T. White 
                                                                    MMA 
Expires: December 2004                                        July 2004 
 
 
             Registration of MIME media type audio/mobile-xmf 
 
 
 Status of this Memo 
 
   By submitting this Internet-Draft, I certify that any applicable 
   patent or other IPR claims of which I am aware have been disclosed, 
   or will be disclosed, and any of which I become aware will be 
   disclosed, in accordance with RFC 3668. 
    
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Abstract 
    
   MIDI Manufacturers Association (MMA) and Association of Music 
   Electronics industry (AMEI) have recently produced the Mobile XMF 
   standard [1]. The Mobile XMF standard has been developed in 
   particularly for mobile MIDI [6] applications. Mobile XMF 
   information is a very compact media type providing high quality 
   synthetic audio content for music downloading and messaging 
   applications that require MIME registration. 
    
    
    
    
    
    
    
  
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                           Mobile XMF MIME                 July, 2004 
                                    
    
1 Introduction 
    
   MIDI content is commonly used in the Internet. Commonly MIDI 
   information is stored in the Standard MIDI File (SMF) format [7]. 
   The present MIME type registration uses the Mobile XMF file format 
   for the encapsulation of SP-MIDI [3,4] and Mobile DLS [2] data.  
 
2 Registration of audio/mobile-xmf 
 
   MIME media type name: audio 
    
   MIME subtype name: mobile-xmf 
    
   Required parameters: none 
    
   Optional parameters: 
    
        prl 
         
        prl is a string (inside double quotation marks 
                                                        ) containing 
        the playback resources included in all Content Description 
        MetaDataItems of the Mobile XMF file. The string contains two 
        digit hexadecimal numbers representing data bytes from the 
        Content Description Meta Data. The same resource is listed only 
        once. A playback resource contains two parts: a prefix and 
        data. If the file includes Playback Resource Lists such as [00h 
        01h 00h 02h] and [00h 01h 00h 03h], the corresponding prl is 
        000100020003 containing playback resources 01, 02, and 03 
        with the prefix 00.  
         
        minimum-pr 
         
        minimum-pr is a string containing the Maximum Instantaneous 
        Resource (MIR) values from the first row of all MIR Count 
        Tables corresponding to the playback resources listed in prl. 
        Only the largest value from the values of the same resource is 
        chosen. If the file includes first rows of MIR Count Tables 
        such as [02h 00h] and [01h 01h] corresponding to the above 
        Playback Resource Lists, the corresponding minimum-pr is 
        020001. (02 is the largest of 2 and 1, 00 is the largest of 
        0, and 01 is the largest of 1.) minimum-pr requires the use of 
        prl and the values in minimum-pr must be in the same order as 
        the resources in prl. minimum-pr is the most important of 
        minimum-pr and total-pr, because it defines the minimum 
        playback requirements. 
         
        total-pr 
         
        total-pr is a string containing the MIR values from the last 
        row of all MIR Count Tables corresponding to the playback 
        resources listed in prl. Only the largest value from the values 
        of the same resource is chosen. If the file includes last rows 
  
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                           Mobile XMF MIME                 July, 2004 
                                    
        of MIR Count Tables such as [05h 02h] and [06h 01h] 
        corresponding to the above Playback Resource Lists, the 
        corresponding total-pr is 060201. (06 is the largest of 5 and 
        6, 02 is the largest of 2, and 01 is the largest of 1.) total-
        pr requires the use of prl and the values in total-pr must be 
        in the same order as the resources in prl. 
         
   Encoding considerations:  
         
        mobile-xmf data is binary data and must be encoded for non-
        binary transport; Base64 is suitable for Email 
    
   Security considerations: 
         
        Many synthetic audio compositions have associated intellectual 
        property rights. It is conceivable that rights owners of 
        mobile-xmf content will want to protect their rights by 
        applying security mechanisms that prohibit the rendering of the 
        content without a legally acquired license to do so. These 
        mechanisms would be applied externally to the Content-Type 
        defined here; mobile-xmf content itself is not encrypted 
        internally. mobile-xmf streams do not contain executable 
        content. 
    
   Interoperability considerations: 
         
        Mobile XMF is a Musical Instrument Digital Interface (MIDI) 
        specification developed by MMA and AMEI. mobile-xmf is based on 
        the XMF 1.0 specification [5] which standardizes a meta file 
        format for the electronic distribution of music. mobile-xmf 
        data is stored in XMF file format [5]. 
         
    
   Published specification: 
    
        There are no previous RFC documents on audio/mobile-xmf.  
         
        References: 
            
           1 Mobile XMF Content Format Specification, MMA specification 
              v1.0., RP-42, Los Angeles, CA, USA. 2004. 
           2 Mobile DLS, MMA specification v1.0., RP-41, Los Angeles, 
              CA, USA. 2004. 
           3 Scalable Polyphony MIDI Specification. December 2001, RP-
              034, The MIDI Manufacturers Association, Los Angeles, CA, 
              USA. 
           4 Scalable Polyphony MIDI Device 5-24 Note Profile for 3GPP, 
              December 2001, RP-035, The MIDI Manufacturers 
              Association, Los Angeles, CA, USA. 
           5 Specification for XMF Meta File Format, Version 1.00b. The 
              MIDI Manufacturers Association, Los Angeles, CA, USA, 
              2001. 
  
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                           Mobile XMF MIME                 July, 2004 
                                    
           6 MIDI 1.0 Detailed Specification, Document Version 4.2. 
              February 1996, In The Complete MIDI 1.0 Detailed 
              Specification, Document Version 96.1. The MIDI 
              Manufacturers Association., Los Angeles, CA, USA. 
           7 Standard MIDI Files 1.0, In The Complete MIDI 1.0 
              Detailed Specification, Document Version 96.1. The MIDI 
              Manufacturers Association., Los Angeles, CA, USA. 
    
   Applications which use this media type: 
         
        mobile-xmf is a synthetic audio format for the flexible 
        presentation of SP-MIDI and Mobile DLS instrument data on a 
        wide range of playback devices, particularly portable 
        appliances such as mobile phones, PDAs, and palmtop computers. 
    
    
   Additional information: 
    
   Magic number(s): First twelve bytes:  
    
        \130\115\106\137\062\056\060\060\000\000\000\002 
    
   File extension(s): mxmf 
    
   Macintosh File Type Code(s): mxmf 
    
   Intended usage: COMMON 
    
 
3 IANA Considerations 
 
   Section 2 of this document registers one MIME subtype. 
 
4 Security Considerations 
    
   Security considerations are specified in the MIME subtype 
   registration contained in Section 2. 
    
5 Authors' Addresses 
    
        Matti Hamalainen 
        Nokia 
        P.O. Box 100 (Visiokatu 1) 
        FIN-33721 Tampere, Finland 
        Tel: +358 7180 35789 
        Fax: +358 7180 35899 
         
        Email: matti.s.hamalainen@nokia.com 
         
         
         
         
         
  
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                           Mobile XMF MIME                 July, 2004 
                                    
         
         
        Tom White,  
        MIDI Manufacturers Association 
        P.O. Box 3173 
        La Habra CA 
        90632-3173 
        Tel (714) 736-9774 
        Fax (714) 736-9775 
         
        Email: mma@midi.org 
         
     
   Author/Change controller: 
 
        Matti Hamalainen 
        Nokia 
        P.O. Box 100 (Visiokatu 1) 
        FIN-33721 Tampere, Finland 
        Tel: +358 7180 35789 
        Fax: +358 7180 35899 
        matti.s.hamalainen@nokia.com 
         
 
6 Copyright notice 
 
        Copyright (C) The Internet Society (2004).  This document is 
        subject to the rights, licenses and restrictions contained in 
        BCP 78, and except as set forth therein, the authors retain all 
        their rights. 
         
        This document and the information contained herein are provided 
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        HE/SHE REPRESENTS OR IS SPONSORED BY (IF ANY), THE INTERNET 
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        WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO 
        ANY WARRANTY THAT THE USE OF THE INFORMATION HEREIN WILL NOT 
        INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF 
        MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. 
 
 
 
 
 
 
 
 
  
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