file/Magdir/animation

#------------------------------------------------------------------------------
# animation:  file(1) magic for animation/movie formats
#
# animation formats
# MPEG, FLI, DL originally from vax@ccwf.cc.utexas.edu (VaX#n8)
# FLC, SGI, Apple originally from Daniel Quinlan (quinlan@yggdrasil.com)

# MPEG animation format
0	belong		0x000001b3		MPEG video stream data
#>4	beshort&0xfff0	x			(%d x
#>5	beshort&0x0fff  x			%d)
0	belong		0x000001ba		MPEG system stream data
# MPEG Audio (*.mpx)
# from dreesen@math.fu-berlin.de
0	beshort		&0xffe0		MPEG
# MPEG 1.0
>1	byte&0x08	=0x08		\b 1.0
# Layer 3
>>1	byte		&0x02		\b layer 3 audio stream data
>>>2	byte&0xf0	=0x10		\b,  32 kBit/s
>>>2	byte&0xf0	=0x20		\b,  40 kBit/s
>>>2	byte&0xf0	=0x30		\b,  48 kBit/s
>>>2	byte&0xf0	=0x40		\b,  56 kBit/s
>>>2	byte&0xf0	=0x50		\b,  64 kBit/s
>>>2	byte&0xf0	=0x60		\b,  80 kBit/s
>>>2	byte&0xf0	=0x70		\b,  96 kBit/s
>>>2	byte&0xf0	=0x80		\b, 112 kBit/s
>>>2	byte&0xf0	=0x90		\b, 128 kBit/s
>>>2	byte&0xf0	=0xA0		\b, 160 kBit/s
>>>2	byte&0xf0	=0xB0		\b, 192 kBit/s
>>>2	byte&0xf0	=0xC0		\b, 224 kBit/s
>>>2	byte&0xf0	=0xD0		\b, 256 kBit/s
>>>2	byte&0xf0	=0xE0		\b, 320 kBit/s
# Layer 2
>>1	byte		&0x04		\b layer 2 audio stream data
>>>2	byte&0xf0	=0x10		\b,  32 kBit/s
>>>2	byte&0xf0	=0x20		\b,  48 kBit/s
>>>2	byte&0xf0	=0x30		\b,  56 kBit/s
>>>2	byte&0xf0	=0x40		\b,  64 kBit/s
>>>2	byte&0xf0	=0x50		\b,  80 kBit/s
>>>2	byte&0xf0	=0x60		\b,  96 kBit/s
>>>2	byte&0xf0	=0x70		\b, 112 kBit/s
>>>2	byte&0xf0	=0x80		\b, 128 kBit/s
>>>2	byte&0xf0	=0x90		\b, 160 kBit/s
>>>2	byte&0xf0	=0xA0		\b, 192 kBit/s
>>>2	byte&0xf0	=0xB0		\b, 224 kBit/s
>>>2	byte&0xf0	=0xC0		\b, 256 kBit/s
>>>2	byte&0xf0	=0xD0		\b, 320 kBit/s
>>>2	byte&0xf0	=0xE0		\b, 384 kBit/s
# freq
>>2	byte&0x0C	=0x00		\b, 44.1 kHz
>>2	byte&0x0C	=0x04		\b, 48 kHz
>>2	byte&0x0C	=0x08		\b, 32 kHz
# MPEG 2.5
>1	byte&0x18	=0x00		\b 2.5
# Layer 3
>>1	byte		&0x02		\b layer 3 audio stream data
# Layer 2
>>1	byte		&0x04		\b layer 2 audio stream data
# MPEG 2.0
>1	byte&0x18	=0x10		\b 2.0
# Layer 3
>>1	byte		&0x02		\b layer 3 audio stream data
# Layer 2
>>1	byte		&0x04		\b layer 2 audio stream data
>>2	byte&0xf0	=0x10		\b,  8 kBit/s
>>2	byte&0xf0	=0x20		\b,  16 kBit/s
>>2	byte&0xf0	=0x30		\b,  24 kBit/s
>>2	byte&0xf0	=0x40		\b,  32 kBit/s
>>2	byte&0xf0	=0x50		\b,  40 kBit/s
>>2	byte&0xf0	=0x60		\b,  48 kBit/s
>>2	byte&0xf0	=0x70		\b,  56 kBit/s
>>2	byte&0xf0	=0x80		\b,  64 kBit/s
>>2	byte&0xf0	=0x90		\b,  80 kBit/s
>>2	byte&0xf0	=0xA0		\b,  96 kBit/s
>>2	byte&0xf0	=0xB0		\b, 112 kBit/s
>>2	byte&0xf0	=0xC0		\b, 128 kBit/s
>>2	byte&0xf0	=0xD0		\b, 144 kBit/s
>>2	byte&0xf0	=0xE0		\b, 160 kBit/s
# freq
>>2	byte&0x0C	=0x00		\b, 22.05 kHz
>>2	byte&0x0C	=0x04		\b, 24 kHz
>>2	byte&0x0C	=0x08		\b, 16 kHz
# misc
>3	byte&0xC0	=0x00		\b, stereo
>3	byte&0xC0	=0x40		\b, jstereo
>3	byte&0xC0	=0x80		\b, dual-ch
>3	byte&0xC0	=0xC0		\b, mono
#>1	byte&0x01	=0x00		\b, Error Protection
#>2	byte&0x02	=0x02		\b, Padding
#>2	byte&0x01	=0x01		\b, Private
#>3	byte&0x08	=0x08		\b, Copyright
#>3	byte&0x04	=0x04		\b, Original
#>3	byte&0x03	1		\b, Emphasis 5
#>3	byte&0x03	3		\b, Emphasis c

# FLI animation format
4	leshort		0xAF11			FLI file
>6	leshort		x			- %d frames,
>8	leshort		x			width=%d pixels,
>10	leshort		x			height=%d pixels,
>12	leshort		x			depth=%d,
>16	leshort		x			ticks/frame=%d
# FLC animation format
4	leshort		0xAF12			FLC file
>6	leshort		x			- %d frames
>8	leshort		x			width=%d pixels,
>10	leshort		x			height=%d pixels,
>12	leshort		x			depth=%d,
>16	leshort		x			ticks/frame=%d

# DL animation format
# XXX - collision with most `mips' magic
#
# I couldn't find a real magic number for these, however, this
# -appears- to work.  Note that it might catch other files, too, so be
# careful!
#
# Note that title and author appear in the two 20-byte chunks
# at decimal offsets 2 and 22, respectively, but they are XOR'ed with
# 255 (hex FF)!  The DL format is really bad.
#
#0	byte	1	DL version 1, medium format (160x100, 4 images/screen)
#>42	byte	x	- %d screens,
#>43	byte	x	%d commands
#0	byte	2	DL version 2
#>1	byte	1	- large format (320x200,1 image/screen),
#>1	byte	2	- medium format (160x100,4 images/screen),
#>1	byte	>2	- unknown format,
#>42	byte	x	%d screens,
#>43	byte	x	%d commands
# Based on empirical evidence, DL version 3 have several nulls following the
# \003.  Most of them start with non-null values at hex offset 0x34 or so.
#0	string	\3\0\0\0\0\0\0\0\0\0\0\0	DL version 3

# SGI and Apple formats
0	string		MOVI		Silicon Graphics movie file
4	string		moov		Apple QuickTime movie file (moov)
4	string		mdat		Apple QuickTime movie file (mdat)