file/magdir/riff

   1
   2 #------------------------------------------------------------------------------
   3 # riff:  file(1) magic for RIFF format
   4 # See
   5 #
   6 #       http://www.seanet.com/users/matts/riffmci/riffmci.htm
   7 #
   8 # and
   9 #
  10 #       http://www.ora.com/centers/gff/formats/micriff/index.htm
  11 #
  12 # and
  13 #
  14 #       http://www.jtauber.com/music/encoding/niff/spec/
  15 #
  16 0       string          RIFF            RIFF (little-endian) data
  17 # RIFF Palette format
  18 >8      string          PAL             \b, palette
  19 >>16    leshort         x               \b, version %d
  20 >>18    leshort         x               \b, %d entries
  21 # RIFF Device Independent Bitmap format
  22 >8      string          RDIB            \b, device-independent bitmap
  23 >>16    string          BM
  24 >>>30   leshort         12              \b, OS/2 1.x format
  25 >>>>34  leshort         x               \b, %d x
  26 >>>>36  leshort         x               %d
  27 >>>30   leshort         64              \b, OS/2 2.x format
  28 >>>>34  leshort         x               \b, %d x
  29 >>>>36  leshort         x               %d
  30 >>>30   leshort         40              \b, Windows 3.x format
  31 >>>>34  lelong          x               \b, %d x
  32 >>>>38  lelong          x               %d x
  33 >>>>44  leshort         x               %d
  34 # RIFF MIDI format
  35 >8      string          RMID            \b, MIDI
  36 # RIFF Multimedia Movie File format
  37 >8      string          RMMP            \b, multimedia movie
  38 # Microsoft WAVE format (*.wav)
  39 >8      string          WAVE            \b, WAVE audio
  40 >>20    leshort         1               \b, Microsoft PCM
  41 >>>34   leshort         >0              \b, %d bit
  42 >>22    leshort         =1              \b, mono
  43 >>22    leshort         =2              \b, stereo
  44 >>22    leshort         >2              \b, %d channels
  45 >>24    lelong          >0              %d Hz
  46 # AVI == Audio Video Interleave
  47 >8      string          AVI\            \b, AVI
  48 # Animated Cursor format
  49 >8      string          ACON            \b, animated cursor
  50
  51 #
  52 # XXX - some of the below may only appear in little-endian form.
  53 #
  54 # Also "MV93" appears to be for one form of Macromedia Director
  55 # files, and "GDMF" appears to be another multimedia format.
  56 #
  57 0       string          RIFX            RIFF (big-endian) data
  58 # RIFF Palette format
  59 >8      string          PAL             \b, palette
  60 >>16    beshort         x               \b, version %d
  61 >>18    beshort         x               \b, %d entries
  62 # RIFF Device Independent Bitmap format
  63 >8      string          RDIB            \b, device-independent bitmap
  64 >>16    string          BM
  65 >>>30   beshort         12              \b, OS/2 1.x format
  66 >>>>34  beshort         x               \b, %d x
  67 >>>>36  beshort         x               %d
  68 >>>30   beshort         64              \b, OS/2 2.x format
  69 >>>>34  beshort         x               \b, %d x
  70 >>>>36  beshort         x               %d
  71 >>>30   beshort         40              \b, Windows 3.x format
  72 >>>>34  belong          x               \b, %d x
  73 >>>>38  belong          x               %d x
  74 >>>>44  beshort         x               %d
  75 # RIFF MIDI format
  76 >8      string          RMID            \b, MIDI
  77 # RIFF Multimedia Movie File format
  78 >8      string          RMMP            \b, multimedia movie
  79 # Microsoft WAVE format (*.wav)
  80 >8      string          WAVE            \b, WAVE audio
  81 >>20    leshort         1               \b, Microsoft PCM
  82 >>>34   leshort         >0              \b, %d bit
  83 >>22    beshort         =1              \b, mono
  84 >>22    beshort         =2              \b, stereo
  85 >>22    beshort         >2              \b, %d channels
  86 >>24    belong          >0              %d Hz
  87 # AVI == Audio Video Interleave
  88 >8      string          AVI\            \b, AVI
  89 # Animated Cursor format
  90 >8      string          ACON            \b, animated cursor
  91 # Notation Interchange File Format (big-endian only)
  92 >8      string          NIFF            \b, Notation Interchange File Format
  93