filtre40.s

关于DVD的MPEG2用的DSP代码,在DSP的实现MPEG的压缩,解压算法.

		.short	0x9d
		.short	0xffaa
		.short	0x29
		.short	0xfff1
;
		.short	0xffe7
		.short	0x3a
		.short	0xff91
		.short	0xc0
		.short	0xfecb
		.short	0x1dc
		.short	0xfd38
		.short	0x420
		.short	0xf9c8
		.short	0x9fb
		.short	0xec8d
		.short	0x77a8
		.short	0x1d98
		.short	0xf372
		.short	0x76d
		.short	0xfb28
		.short	0x342
		.short	0xfdcf
		.short	0x171
		.short	0xff16
		.short	0x8c
		.short	0xffb3
		.short	0x25
		.short	0xfff3
;
		.short	0xffe9
		.short	0x35
		.short	0xff9c
		.short	0xad
		.short	0xfeea
		.short	0x1ab
		.short	0xfd81
		.short	0x3b4
		.short	0xfa6a
		.short	0x8fd
		.short	0xee53
		.short	0x7995
		.short	0x197e
		.short	0xf503
		.short	0x686
		.short	0xfbbd
		.short	0x2de
		.short	0xfe13
		.short	0x144
		.short	0xff33
		.short	0x7b
		.short	0xffbd
		.short	0x20
		.short	0xfff5
;
		.short	0xffeb
		.short	0x2f
		.short	0xffa8
		.short	0x98
		.short	0xff0c
		.short	0x177
		.short	0xfdcf
		.short	0x340
		.short	0xfb18
		.short	0x7eb
		.short	0xf04b
		.short	0x7b43
		.short	0x157b
		.short	0xf699
		.short	0x59b
		.short	0xfc56
		.short	0x277
		.short	0xfe58
		.short	0x117
		.short	0xff50
		.short	0x69
		.short	0xffc7
		.short	0x1b
		.short	0xfff7
;
		.short	0xffee
		.short	0x28
		.short	0xffb4
		.short	0x82
		.short	0xff30
		.short	0x13f
		.short	0xfe22
		.short	0x2c4
		.short	0xfbd2
		.short	0x6c4
		.short	0xf274
		.short	0x7cb3
		.short	0x1193
		.short	0xf831
		.short	0x4ac
		.short	0xfcf1
		.short	0x20f
		.short	0xfe9e
		.short	0xe8
		.short	0xff6d
		.short	0x57
		.short	0xffd1
		.short	0x16
		.short	0xfff8
;
		.short	0xfff1
		.short	0x21
		.short	0xffc2
		.short	0x6a
		.short	0xff56
		.short	0x104
		.short	0xfe7b
		.short	0x242
		.short	0xfc96
		.short	0x58a
		.short	0xf4cd
		.short	0x7de1
		.short	0xdc9
		.short	0xf9ca
		.short	0x3bb
		.short	0xfd8e
		.short	0x1a5
		.short	0xfee5
		.short	0xb9
		.short	0xff8b
		.short	0x45
		.short	0xffda
		.short	0x11
		.short	0xfffa
;
		.short	0xfff5
		.short	0x19
		.short	0xffd1
		.short	0x51
		.short	0xff7e
		.short	0xc7
		.short	0xfed7
		.short	0x1b9
		.short	0xfd65
		.short	0x43e
		.short	0xf756
		.short	0x7ece
		.short	0xa20
		.short	0xfb61
		.short	0x2c9
		.short	0xfe2c
		.short	0x13b
		.short	0xff2d
		.short	0x8a
		.short	0xffa9
		.short	0x34
		.short	0xffe4
		.short	0xd
		.short	0xfffc
;
		.short	0xfff9
		.short	0x11
		.short	0xffe0
		.short	0x37
		.short	0xffa8
		.short	0x86
		.short	0xff37
		.short	0x12a
		.short	0xfe3c
		.short	0x2e2
		.short	0xfa0d
		.short	0x7f77
		.short	0x69a
		.short	0xfcf3
		.short	0x1d8
		.short	0xfeca
		.short	0xd1
		.short	0xff74
		.short	0x5c
		.short	0xffc7
		.short	0x22
		.short	0xffee
		.short	0x8
		.short	0xfffe
;
		.short	0xfffc
		.short	0x8
		.short	0xfff0
		.short	0x1c
		.short	0xffd4
		.short	0x44
		.short	0xff9b
		.short	0x97
		.short	0xff1b
		.short	0x177
		.short	0xfcf1
		.short	0x7fdd
		.short	0x339
		.short	0xfe7e
		.short	0xea
		.short	0xff66
		.short	0x67
		.short	0xffbb
		.short	0x2d
		.short	0xffe4
		.short	0x10
		.short	0xfff7
		.short	0x4
		.short	0xffff


table:	.align	2	//NDec, NLength, NNb, (NNb-1)*NLength
		.short	0x3c0	//0
		.short	0x400
		.short	0x4
		.short	0xc00
;
#ifdef	EFFECT
		.short	0x480	//1
		.short	0x354
		.short	0x4
		.short	0x9fc
#else	//EFFECT
		.short	0x480	//1
		.short	0x356
		.short	0x4
		.short	0xa02
#endif	//EFFECT
;
		.short	0x4e0	//2
		.short	0x314
		.short	0x5
		.short	0xc50
;
		.short	0x510	//3
		.short	0x2f8
		.short	0x5
		.short	0xbe0
;
		.short	0x540	//4
		.short	0x2dc
		.short	0x5
		.short	0xb70
;
		.short	0x570	//5
		.short	0x2c4
		.short	0x5
		.short	0xb10
;
		.short	0x5a0	//6
		.short	0x2ac
		.short	0x5
		.short	0xab0
;
#ifdef	EFFECT
		.short	0x5d0	//7
		.short	0x294
		.short	0x5
		.short	0xa50
#else	//EFFECT
		.short	0x5d0	//7
		.short	0x296
		.short	0x5
		.short	0xa58
#endif	//EFFECT
;
		.short	0x600	//8
		.short	0x280
		.short	0x5
		.short	0xa00
;
#ifdef	EFFECT
		.short	0x630	//9
		.short	0x26c
		.short	0x6
		.short	0xc1c
#else	//EFFECT
		.short	0x630	//9
		.short	0x26e
		.short	0x6
		.short	0xc26
#endif	//EFFECT
;
		.short	0x660	//a
		.short	0x25c
		.short	0x6
		.short	0xbcc
;
#ifdef	EFFECT
		.short	0x690	//b
		.short	0x248
		.short	0x6
		.short	0xb68
#else	//EFFECT
		.short	0x690	//b
		.short	0x24a
		.short	0x6
		.short	0xb72
#endif	//EFFECT
;
#ifdef	EFFECT
		.short	0x6c0	//c
		.short	0x238
		.short	0x6
		.short	0xb18
#else	//EFFECT
		.short	0x6c0	//c
		.short	0x23a
		.short	0x6
		.short	0xb22
#endif	//EFFECT
;
#ifdef	EFFECT
		.short	0x6f0	//d
		.short	0x228
		.short	0x6
		.short	0xac8
#else	//EFFECT
		.short	0x6f0	//d
		.short	0x22a
		.short	0x6
		.short	0xad2
#endif	//EFFECT
;
		.short	0x720	//e
		.short	0x21c
		.short	0x6
		.short	0xa8c
;
#ifdef	EFFECT
		.short	0x750	//f
		.short	0x20c
		.short	0x6
		.short	0xa3c
#else	//EFFECT
		.short	0x750	//f
		.short	0x20e
		.short	0x6
		.short	0xa46
#endif	//EFFECT
;
		.short	0x780	//10
		.short	0x200
		.short	0x6
		.short	0xa00
;
		.short	0x7b0	//11
		.short	0x1f4
		.short	0x7
		.short	0xbb8
;	
		.short	0x7e0	//12
		.short	0x1e8
		.short	0x7
		.short	0xb70
;
#ifdef	EFFECT
		.short	0x810	//13
		.short	0x1dc
		.short	0x7
		.short	0xb28
#else	//EFFECT
		.short	0x810	//13
		.short	0x1de
		.short	0x7
		.short	0xb34
#endif	//EFFECT
;
#ifdef	EFFECT
		.short	0x840	//14
		.short	0x1d0
		.short	0x8
		.short	0xcb0
#else	//EFFECT
		.short	0x840	//14
		.short	0x1d2
		.short	0x8
		.short	0xcbe
#endif	//EFFECT
;
		.short	0x870	//15
		.short	0x1c8
		.short	0x8
		.short	0xc78
;
#ifdef	EFFECT
		.short	0x8a0	//16
		.short	0x1bc
		.short	0x8
		.short	0xc24
#else	//EFFECT
		.short	0x8a0	//16
		.short	0x1be
		.short	0x8
		.short	0xc32
#endif	//EFFECT
;
		.short	0x8d0	//17
		.short	0x1b4
		.short	0x8
		.short	0xbec
;
		.short	0x900	//18
		.short	0x1ac
		.short	0x8
		.short	0xbb4
;
#ifdef	EFFECT
		.short	0x930	//19
		.short	0x1a0
		.short	0x8
		.short	0xb60
#else	//EFFECT
		.short	0x930	//19
		.short	0x1a2
		.short	0x8
		.short	0xb6e
#endif	//EFFECT
;
#ifdef	EFFECT
		.short	0x960	//1a
		.short	0x198
		.short	0x9
		.short	0xcc0
#else	//EFFECT
		.short	0x960	//1a
		.short	0x19a
		.short	0x9
		.short	0xcd0
#endif	//EFFECT
;
#ifdef	EFFECT
		.short	0x9c0	//1b
		.short	0x188
		.short	0x9
		.short	0xc40
#else	//EFFECT
		.short	0x9c0	//1b
		.short	0x18a
		.short	0x9
		.short	0xc50
#endif	//EFFECT
;
		.short	0x9f0	//1c
		.short	0x184
		.short	0x9
		.short	0xc20
;
#ifdef	EFFECT
		.short	0xa80	//1d
		.short	0x16c
		.short	0xa
		.short	0xccc
#else	//EFFECT
		.short	0xa80	//1d
		.short	0x16e
		.short	0xa
		.short	0xcde
#endif	//EFFECT
;
#ifdef	EFFECT
		.short	0xae0	//1e
		.short	0x160
		.short	0xa
		.short	0xc60
#else	//EFFECT
		.short	0xae0	//1e
		.short	0x162
		.short	0xa
		.short	0xc72
#endif	//EFFECT
;
		.short	0xba0	//1f
		.short	0x14c
		.short	0xb
		.short	0xcf8
;
#ifdef	EFFECT
		.short	0xc90	//20
		.short	0x130
		.short	0xb
		.short	0xbe0
#else	//EFFECT
		.short	0xc90	//20
		.short	0x132
		.short	0xb
		.short	0xbf4
#endif	//EFFECT
;
		.short	0xf00	//21	
		.short	0x100
		.short	0xd
		.short	0xc00		
	
window:			.align 2
		.short	0x0
		.short	0x80
		.short	0x100
		.short	0x180
		.short	0x200
		.short	0x280
		.short	0x300
		.short	0x380
		.short	0x400
		.short	0x480
		.short	0x500
		.short	0x580
		.short	0x600
		.short	0x680
		.short	0x700
		.short	0x780
		.short	0x800
		.short	0x880
		.short	0x900
		.short	0x980
		.short	0xa00
		.short	0xa80
		.short	0xb00
		.short	0xb80
		.short	0xc00
		.short	0xc80
		.short	0xd00
		.short	0xd80
		.short	0xe00
		.short	0xe80
		.short	0xf00
		.short	0xf80
		.short	0x1000
		.short	0x1080
		.short	0x1100
		.short	0x1180
		.short	0x1200
		.short	0x1280
		.short	0x1300
		.short	0x1380
		.short	0x1400
		.short	0x1480
		.short	0x1500
		.short	0x1580
		.short	0x1600
		.short	0x1680
		.short	0x1700
		.short	0x1780
		.short	0x1800
		.short	0x1880
		.short	0x1900
		.short	0x1980
		.short	0x1a00
		.short	0x1a80
		.short	0x1b00
		.short	0x1b80
		.short	0x1c00
		.short	0x1c80
		.short	0x1d00
		.short	0x1d80
		.short	0x1e00
		.short	0x1e80
		.short	0x1f00
		.short	0x1f80
		.short	0x2000
		.short	0x2080
		.short	0x2100
		.short	0x2180
		.short	0x2200
		.short	0x2280
		.short	0x2300
		.short	0x2380
		.short	0x2400
		.short	0x2480
		.short	0x2500
		.short	0x2580
		.short	0x2600
		.short	0x2680
		.short	0x2700
		.short	0x2780
		.short	0x2800
		.short	0x2880
		.short	0x2900
		.short	0x2980
		.short	0x2a00
		.short	0x2a80
		.short	0x2b00
		.short	0x2b80
		.short	0x2c00
		.short	0x2c80
		.short	0x2d00
		.short	0x2d80
		.short	0x2e00
		.short	0x2e80
		.short	0x2f00
		.short	0x2f80
		.short	0x3000
		.short	0x3080
		.short	0x3100
		.short	0x3180
		.short	0x3200
		.short	0x3280
		.short	0x3300
		.short	0x3380
		.short	0x3400
		.short	0x3480
		.short	0x3500
		.short	0x3580
		.short	0x3600
		.short	0x3680
		.short	0x3700
		.short	0x3780
		.short	0x3800
		.short	0x3880
		.short	0x3900
		.short	0x3980
		.short	0x3a00
		.short	0x3a80
		.short	0x3b00
		.short	0x3b80
		.short	0x3c00
		.short	0x3c80
		.short	0x3d00
		.short	0x3d80
		.short	0x3e00
		.short	0x3e80
		.short	0x3f00
		.short	0x3f80
		.short	0x4000
		.short	0x4080
		.short	0x4100
		.short	0x4180
		.short	0x4200
		.short	0x4280
		.short	0x4300
		.short	0x4380
		.short	0x4400
		.short	0x4480
		.short	0x4500
		.short	0x4580
		.short	0x4600
		.short	0x4680
		.short	0x4700
		.short	0x4780
		.short	0x4800
		.short	0x4880
		.short	0x4900
		.short	0x4980
		.short	0x4a00
		.short	0x4a80
		.short	0x4b00
		.short	0x4b80
		.short	0x4c00
		.short	0x4c80
		.short	0x4d00
		.short	0x4d80
		.short	0x4e00
		.short	0x4e80
		.short	0x4f00
		.short	0x4f80
		.short	0x5000
		.short	0x5080
		.short	0x5100
		.short	0x5180
		.short	0x5200
		.short	0x5280
		.short	0x5300
		.short	0x5380
		.short	0x5400
		.short	0x5480
		.short	0x5500
		.short	0x5580
		.short	0x5600
		.short	0x5680
		.short	0x5700
		.short	0x5780
		.short	0x5800
		.short	0x5880
		.short	0x5900
		.short	0x5980
		.short	0x5a00
		.short	0x5a80
		.short	0x5b00
		.short	0x5b80
		.short	0x5c00
		.short	0x5c80
		.short	0x5d00
		.short	0x5d80
		.short	0x5e00
		.short	0x5e80
		.short	0x5f00
		.short	0x5f80
		.short	0x6000
		.short	0x6080
		.short	0x6100
		.short	0x6180
		.short	0x6200
		.short	0x6280
		.short	0x6300
		.short	0x6380
		.short	0x6400
		.short	0x6480
		.short	0x6500
		.short	0x6580
		.short	0x6600
		.short	0x6680
		.short	0x6700
		.short	0x6780
		.short	0x6800
		.short	0x6880
		.short	0x6900
		.short	0x6980
		.short	0x6a00
		.short	0x6a80
		.short	0x6b00
		.short	0x6b80
		.short	0x6c00
		.short	0x6c80
		.short	0x6d00
		.short	0x6d80
		.short	0x6e00
		.short	0x6e80
		.short	0x6f00
		.short	0x6f80
		.short	0x7000
		.short	0x7080
		.short	0x7100
		.short	0x7180
		.short	0x7200
		.short	0x7280
		.short	0x7300
		.short	0x7380
		.short	0x7400
		.short	0x7480
		.short	0x7500
		.short	0x7580
		.short	0x7600
		.short	0x7680
		.short	0x7700
		.short	0x7780
		.short	0x7800
		.short	0x7880
		.short	0x7900
		.short	0x7980
		.short	0x7a00
		.short	0x7a80
		.short	0x7b00
		.short	0x7b80
		.short	0x7c00
		.short	0x7c80
		.short	0x7d00
		.short	0x7d80
		.short	0x7e00
		.short	0x7e80
		.short	0x7f00
		.short	0x7f80


ratefilt:	.align	2
		.short	0xfff7
		.short	0x0
		.short	0xf
		.short	0x1b
		.short	0x19
		.short	0x5
		.short	0xffe5
		.short	0xffcc
		.short	0xffcc
		.short	0xffee
		.short	0x27
		.short	0x57
		.short	0x5e
		.short	0x2b
		.short	0xffd0
		.short	0xff7b
		.short	0xff64
		.short	0xffa8
		.short	0x32
		.short	0xbc
		.short	0xf1
		.short	0x9e
		.short	0xffdb
		.short	0xff07
		.short	0xfea0
		.short	0xfef8
		.short	0x0
		.short	0x138
		.short	0x1ed
		.short	0x19d
		.short	0x49
		.short	0xfe8f
		.short	0xfd66
		.short	0xfd96
		.short	0xff3c
		.short	0x19a
		.short	0x369
		.short	0x37f
		.short	0x188
		.short	0xfe5a
		.short	0xfba2
		.short	0xfb0e
		.short	0xfd4d
		.short	0x181
		.short	0x583
		.short	0x6ef
		.short	0x47e
		.short	0xfef6
		.short	0xf910
		.short	0xf634
		.short	0xf8a6
		.short	0x0
		.short	0x8ea
		.short	0xe6f
		.short	0xc7a
		.short	0x24b
		.short	0xf3ae
		.short	0xe807
		.short	0xe776
		.short	0xf71c
		.short	0x1641
		.short	0x3dbe
		.short	0x6227
		.short	0x77f3
		.short	0x77f3
		.short	0x6227
		.short	0x3dbe
		.short	0x1641
		.short	0xf71c
		.short	0xe776
		.short	0xe807
		.short	0xf3ae
		.short	0x24b
		.short	0xc7a
		.short	0xe6f
		.short	0x8ea
		.short	0x0
		.short	0xf8a6
		.short	0xf634
		.short	0xf910
		.short	0xfef6
		.short	0x47e
		.short	0x6ef
		.short	0x583
		.short	0x181
		.short	0xfd4d
		.short	0xfb0e
		.short	0xfba2
		.short	0xfe5a
		.short	0x188
		.short	0x37f
		.short	0x369
		.short	0x19a
		.short	0xff3c
		.short	0xfd96
		.short	0xfd66
		.short	0xfe8f
		.short	0x49
		.short	0x19d
		.short	0x1ed
		.short	0x138
		.short	0x0
		.short	0xfef8
		.short	0xfea0
		.short	0xff07
		.short	0xffdb
		.short	0x9e
		.short	0xf1
		.short	0xbc
		.short	0x32
		.short	0xffa8
		.short	0xff64
		.short	0xff7b
		.short	0xffd0
		.short	0x2b
		.short	0x5e
		.short	0x57
		.short	0x27
		.short	0xffee
		.short	0xffcc
		.short	0xffcc
		.short	0xffe5
		.short	0x5
		.short	0x19
		.short	0x1b
		.short	0xf
		.short	0x0
		.short	0xfff7