nsvdec.mid

来自「君正早期ucos系统(只有早期的才不没有打包成库),MPLAYER,文件系统,图」· MID 代码 · 共 1,772 行 · 第 1/2 页

	.file	1 "nsvdec.c"
	.section .mdebug.abi32
	.previous
	.section	.text.nsv_read_seek,"ax",@progbits
	.align	2
	.align	5
	.ent	nsv_read_seek
	.type	nsv_read_seek, @function
nsv_read_seek:
	.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
	.mask	0x00000000,0
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	j	$31
	li	$2,-1			# 0xffffffffffffffff

	.set	macro
	.set	reorder
	.end	nsv_read_seek
	.section	.text.nsv_read_close,"ax",@progbits
	.align	2
	.align	5
	.ent	nsv_read_close
	.type	nsv_read_close, @function
nsv_read_close:
	.frame	$sp,24,$31		# vars= 0, regs= 1/0, args= 16, gp= 0
	.mask	0x80000000,-8
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-24
	sw	$31,16($sp)
	lw	$3,12($4)
	lw	$2,12($3)
	beq	$2,$0,$L8
	lw	$31,16($sp)

	jal	av_free
	lw	$4,8($3)

	lw	$31,16($sp)
$L8:
	move	$2,$0
	j	$31
	addiu	$sp,$sp,24

	.set	macro
	.set	reorder
	.end	nsv_read_close
	.section	.text.nsv_parse_NSVs_header,"ax",@progbits
	.align	2
	.align	5
	.ent	nsv_parse_NSVs_header
	.type	nsv_parse_NSVs_header, @function
nsv_parse_NSVs_header:
	.frame	$sp,72,$31		# vars= 8, regs= 10/0, args= 24, gp= 0
	.mask	0xc0ff0000,-4
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-72
	sw	$16,32($sp)
	addiu	$16,$4,16
	sw	$31,68($sp)
	sw	$fp,64($sp)
	sw	$23,60($sp)
	sw	$20,48($sp)
	sw	$17,36($sp)
	sw	$22,56($sp)
	sw	$21,52($sp)
	sw	$19,44($sp)
	sw	$18,40($sp)
	move	$23,$4
	move	$4,$16
	jal	get_le32
	lw	$18,12($23)

	move	$4,$16
	jal	get_le32
	move	$20,$2

	move	$4,$16
	jal	get_le16
	move	$fp,$2

	move	$4,$16
	jal	get_le16
	move	$17,$2

	move	$4,$16
	jal	get_byte
	sw	$2,24($sp)

	move	$6,$2
	andi	$2,$2,0x80
	bne	$2,$0,$L10
	andi	$2,$6,0x7f

	move	$21,$6
	li	$22,1			# 0x1
$L12:
	jal	get_le16
	move	$4,$16

	lw	$3,96($23)
	bne	$3,$0,$L22
	sh	$2,156($18)

	li	$2,1162739712			# 0x454e0000
	andi	$17,$17,0xffff
	ori	$2,$2,0x4f4e
	sw	$20,144($18)
	sw	$fp,148($18)
	sh	$17,152($18)
	beq	$20,$2,$L24
	sh	$17,154($18)

	move	$4,$23
	jal	av_new_stream
	move	$5,$0

	beq	$2,$0,$L26
	move	$19,$2

	jal	av_mallocz
	li	$4,28			# 0x1c

	beq	$2,$0,$L26
	lui	$4,%hi(nsv_codec_video_tags)

	lw	$16,8($19)
	addiu	$4,$4,%lo(nsv_codec_video_tags)
	move	$5,$20
	sw	$2,20($19)
	sw	$0,224($16)
	jal	codec_get_id
	sw	$20,232($16)

	lw	$5,24($sp)
	lw	$3,8($19)
	andi	$4,$5,0xffff
	sw	$2,228($16)
	li	$2,24			# 0x18
	sw	$2,392($3)
	sw	$4,44($3)
	sw	$17,40($3)
	move	$4,$19
	li	$5,64			# 0x40
	move	$6,$22
	jal	av_set_pts_info
	move	$7,$21

	sll	$3,$22,2
	sll	$2,$22,7
	subu	$2,$2,$3
	move	$4,$0
	move	$5,$0
	sw	$4,88($19)
	sw	$5,92($19)
	addu	$2,$2,$22
	lw	$4,136($18)
	lw	$5,140($18)
	sll	$2,$2,3
	sra	$3,$2,31
	move	$6,$21
	sra	$7,$21,31
	sw	$3,20($sp)
	jal	av_rescale
	sw	$2,16($sp)

	sw	$2,96($19)
	sw	$3,100($19)
$L24:
	li	$5,1162739712			# 0x454e0000
	ori	$5,$5,0x4f4e
	beq	$fp,$5,$L22
	move	$4,$23

	jal	av_new_stream
	li	$5,1			# 0x1

	beq	$2,$0,$L26
	move	$19,$2

	jal	av_mallocz
	li	$4,28			# 0x1c

	beq	$2,$0,$L26
	li	$17,1			# 0x1

	lw	$16,8($19)
	lui	$4,%hi(nsv_codec_audio_tags)
	addiu	$4,$4,%lo(nsv_codec_audio_tags)
	move	$5,$fp
	sw	$2,20($19)
	sw	$17,224($16)
	jal	codec_get_id
	sw	$fp,232($16)

	sll	$3,$21,2
	sll	$7,$21,7
	subu	$7,$7,$3
	addu	$7,$7,$21
	sw	$2,228($16)
	sll	$7,$7,3
	move	$4,$19
	li	$5,64			# 0x40
	li	$6,1			# 0x1
	jal	av_set_pts_info
	sw	$17,108($19)

	move	$3,$0
	move	$2,$0
	sw	$3,92($19)
	sw	$2,88($19)
	lw	$4,136($18)
	sra	$3,$21,31
	lw	$6,140($18)
	mul	$8,$4,$3
	multu	$4,$21
	mflo	$4
	mfhi	$5
	mul	$7,$6,$21
	sw	$4,96($19)
	addu	$6,$7,$8
	addu	$5,$6,$5
	sw	$5,100($19)
$L22:
	li	$2,4			# 0x4
	sw	$2,16($18)
	move	$3,$0
	lw	$31,68($sp)
	lw	$fp,64($sp)
	lw	$23,60($sp)
	lw	$22,56($sp)
	lw	$21,52($sp)
	lw	$20,48($sp)
	lw	$19,44($sp)
	lw	$18,40($sp)
	lw	$17,36($sp)
	lw	$16,32($sp)
	move	$2,$3
	j	$31
	addiu	$sp,$sp,72

$L10:
	sra	$2,$2,2
	slt	$3,$2,16
	beq	$3,$0,$L13
	addiu	$7,$2,-15

	addiu	$22,$2,1
	li	$7,1			# 0x1
$L15:
	andi	$2,$6,0x1
	beq	$2,$0,$L36
	andi	$3,$6,0x3

	sll	$2,$22,7
	sll	$4,$22,4
	sll	$3,$7,2
	addu	$4,$4,$2
	sll	$2,$7,7
	subu	$4,$4,$22
	subu	$2,$2,$3
	addu	$2,$2,$7
	sll	$3,$4,3
	subu	$22,$3,$4
	sll	$7,$2,3
	andi	$3,$6,0x3
$L36:
	li	$2,3			# 0x3
	beq	$3,$2,$L34
	li	$2,2			# 0x2

	beq	$3,$2,$L35
	sll	$3,$7,5

	sll	$2,$7,1
	j	$L12
	subu	$21,$3,$2

$L13:
	j	$L15
	li	$22,1			# 0x1

$L26:
	sw	$0,16($18)
	li	$3,-1			# 0xffffffffffffffff
	lw	$31,68($sp)
	lw	$fp,64($sp)
	lw	$23,60($sp)
	lw	$22,56($sp)
	lw	$21,52($sp)
	lw	$20,48($sp)
	lw	$19,44($sp)
	lw	$18,40($sp)
	lw	$17,36($sp)
	lw	$16,32($sp)
	move	$2,$3
	j	$31
	addiu	$sp,$sp,72

$L34:
	sll	$3,$7,5
	sll	$2,$7,3
	j	$L12
	subu	$21,$3,$2

$L35:
	sll	$3,$7,3
	sll	$2,$7,5
	subu	$2,$2,$3
	j	$L12
	addu	$21,$2,$7

	.set	macro
	.set	reorder
	.end	nsv_parse_NSVs_header
	.section	.rodata.str1.4,"aMS",@progbits,1
	.align	2
$LC0:
	.ascii	"nsv\000"
	.section	.text.nsv_probe,"ax",@progbits
	.align	2
	.align	5
	.ent	nsv_probe
	.type	nsv_probe, @function
nsv_probe:
	.frame	$sp,24,$31		# vars= 0, regs= 1/0, args= 16, gp= 0
	.mask	0x80000000,-8
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-24
	sw	$31,16($sp)
	lw	$5,4($4)
	li	$2,78			# 0x4e
	lbu	$3,0($5)
	beq	$3,$2,$L58
	li	$2,83			# 0x53

$L38:
	lw	$2,8($4)
	addiu	$6,$2,-3
	slt	$3,$6,2
	bne	$3,$0,$L43
	move	$3,$5

	li	$7,78			# 0x4e
	li	$5,1			# 0x1
	li	$8,83			# 0x53
	li	$10,86			# 0x56
	j	$L46
	li	$9,115			# 0x73

$L47:
	beq	$5,$6,$L43
	addiu	$3,$3,1

$L46:
	lbu	$2,1($3)
	bne	$2,$7,$L47
	addiu	$5,$5,1

	lbu	$2,2($3)
	bne	$2,$8,$L47
	nop

	lbu	$2,3($3)
	bne	$2,$10,$L47
	nop

	lbu	$2,4($3)
	bne	$2,$9,$L47
	li	$2,80			# 0x50

	j	$L59
	lw	$31,16($sp)

$L43:
	lw	$4,0($4)
	lui	$5,%hi($LC0)
	jal	match_ext
	addiu	$5,$5,%lo($LC0)

	li	$3,50			# 0x32
	movz	$3,$0,$2
	move	$2,$3
$L52:
	lw	$31,16($sp)
$L59:
	j	$31
	addiu	$sp,$sp,24

$L58:
	lbu	$3,1($5)
	bne	$3,$2,$L38
	li	$2,86			# 0x56

	lbu	$3,2($5)
	bne	$3,$2,$L38
	li	$2,102			# 0x66

	lbu	$3,3($5)
	beq	$3,$2,$L52
	li	$2,100			# 0x64

	li	$2,115			# 0x73
	bne	$3,$2,$L38
	li	$2,100			# 0x64

	j	$L59
	lw	$31,16($sp)

	.set	macro
	.set	reorder
	.end	nsv_probe
	.section	.rodata.cst4,"aM",@progbits,4
	.align	2
$LC1:
	.word	1314084454
	.align	2
$LC2:
	.word	1314084467
	.align	2
$LC3:
	.word	512000
	.section	.text.nsv_read_chunk,"ax",@progbits
	.align	2
	.align	5
	.ent	nsv_read_chunk
	.type	nsv_read_chunk, @function
nsv_read_chunk:
	.frame	$sp,72,$31		# vars= 16, regs= 10/0, args= 16, gp= 0
	.mask	0xc0ff0000,-4
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-72
	sw	$4,72($sp)
	lw	$2,72($sp)
	sw	$18,40($sp)
	sw	$31,68($sp)
	sw	$fp,64($sp)
	sw	$23,60($sp)
	sw	$22,56($sp)
	sw	$21,52($sp)
	sw	$20,48($sp)
	sw	$19,44($sp)
	sw	$17,36($sp)
	sw	$16,32($sp)
	lw	$2,12($2)
	lui	$4,%hi(C.56.6239)
	sw	$2,28($sp)
	lw	$3,%lo(C.56.6239)($4)
	addiu	$2,$4,%lo(C.56.6239)
	lw	$4,28($sp)
	lw	$6,4($2)
	lw	$8,72($sp)
	lw	$2,40($4)
	sw	$3,16($sp)
	sw	$6,20($sp)
	sw	$5,76($sp)
	beq	$2,$0,$L121
	addiu	$18,$8,16

	move	$fp,$0
$L82:
	move	$2,$fp
	lw	$31,68($sp)
	lw	$fp,64($sp)
	lw	$23,60($sp)
	lw	$22,56($sp)
	lw	$21,52($sp)
	lw	$20,48($sp)
	lw	$19,44($sp)
	lw	$18,40($sp)
	lw	$17,36($sp)
	lw	$16,32($sp)
	j	$31
	addiu	$sp,$sp,72

$L121:
	lw	$2,96($4)
	bne	$2,$0,$L82
	move	$fp,$0

$L64:
	jal	url_feof
	move	$4,$18

	bne	$2,$0,$L65
	nop

	sw	$0,24($sp)
$L67:
	lw	$3,28($sp)
	lw	$2,16($3)
	sltu	$2,$2,3
	beq	$2,$0,$L80
	nop

	bne	$fp,$0,$L80
	lw	$16,72($sp)

	lui	$2,%hi($LC1)
	lui	$4,%hi($LC2)
	lui	$8,%hi($LC3)
	addiu	$2,$2,%lo($LC1)
	addiu	$4,$4,%lo($LC2)
	addiu	$8,$8,%lo($LC3)
	lw	$23,12($16)
	lw	$21,0($2)
	lw	$20,0($4)
	lw	$19,0($8)
	move	$3,$0
	move	$17,$0
	j	$L69
	li	$22,61374			# 0xefbe

$L123:
	jal	get_byte
	nop

	or	$3,$16,$2
	andi	$2,$3,0xffff
	beq	$2,$22,$L115
	nop

	beq	$3,$21,$L116
	nop

	beq	$3,$20,$L117
	li	$2,3			# 0x3

	beq	$17,$19,$L122
	nop

$L69:
	move	$4,$18
	jal	url_feof
	sll	$16,$3,8

	addiu	$17,$17,1
	beq	$2,$0,$L123
	move	$4,$18

	li	$fp,-1			# 0xffffffffffffffff
	sw	$0,16($23)
$L72:
	lw	$16,24($sp)
	li	$2,300			# 0x12c
	addiu	$16,$16,1
	bne	$16,$2,$L67
	sw	$16,24($sp)

$L80:
	bltz	$fp,$L82
	li	$2,3			# 0x3

	lw	$4,28($sp)
	lw	$3,16($4)
	bne	$3,$2,$L84
	lw	$4,72($sp)

	jal	nsv_parse_NSVs_header
	move	$5,$0

	bltz	$2,$L82
	move	$fp,$2

	lw	$8,28($sp)
	lw	$3,16($8)
$L84:
	addiu	$2,$3,-4
	sltu	$2,$2,2
	beq	$2,$0,$L65
	nop

	jal	get_byte
	move	$4,$18

	move	$4,$18
	jal	get_le16
	andi	$17,$2,0x00ff

	move	$16,$2
	jal	get_le16
	move	$4,$18

	sll	$16,$16,4
	andi	$20,$17,0xf
	srl	$17,$17,4
	move	$21,$2
	blez	$20,$L87
	or	$19,$16,$17

	move	$17,$0
$L89:
	jal	get_le16
	move	$4,$18

	andi	$16,$2,0xffff
	jal	get_le32
	move	$4,$18

	addiu	$17,$17,1
	move	$6,$16
	move	$7,$0
	move	$4,$18
	jal	url_fskip
	subu	$16,$19,$16

	bne	$17,$20,$L89
	addiu	$19,$16,-6

$L87:
	jal	url_feof
	move	$4,$18

	bne	$2,$0,$L65
	nop

	bne	$19,$0,$L91
	andi	$20,$21,0xffff

	bne	$20,$0,$L91
	lw	$16,28($sp)

	j	$L64
	sw	$0,16($16)

$L115:
	li	$2,5			# 0x5
	j	$L72
	sw	$2,16($23)

$L116:
	li	$2,1			# 0x1
	j	$L72
	sw	$2,16($23)

$L117:
	j	$L72
	sw	$2,16($23)

$L122:
	j	$L72
	li	$fp,-1			# 0xffffffffffffffff

$L65:
	j	$L82
	li	$fp,-1			# 0xffffffffffffffff

$L91:
	lw	$2,72($sp)
	lw	$4,100($2)
	beq	$4,$0,$L128
	lw	$3,72($sp)

	lw	$2,4($4)
	sll	$2,$2,2
	addu	$3,$sp,$2
	sw	$4,16($3)
	lw	$3,72($sp)
$L128:
	lw	$4,104($3)
	beq	$4,$0,$L96
	nop

	lw	$2,4($4)
	sll	$2,$2,2
	addu	$3,$sp,$2
	sw	$4,16($3)
$L96:
	bne	$19,$0,$L124
	lw	$4,28($sp)

	lw	$21,16($sp)
	beq	$21,$0,$L101
	nop

$L100:
	lw	$3,20($21)
	lw	$2,0($3)
	addiu	$2,$2,1
	sw	$2,0($3)
$L101:
	beq	$20,$0,$L129
	lw	$16,28($sp)

	lw	$16,20($sp)
	lw	$2,8($16)
	lw	$3,232($2)
	lw	$2,28($sp)
	addiu	$19,$2,80
	li	$2,541917184			# 0x204d0000
	ori	$2,$2,0x4350
	beq	$3,$2,$L125
	lw	$23,20($16)

$L104:
	move	$4,$18
	move	$5,$19
	jal	av_get_packet
	move	$6,$20

	lw	$2,28($sp)
	lw	$3,28($19)
	lw	$5,16($2)
	lw	$4,0($16)
	xori	$2,$5,0x4
	sltu	$2,$2,1
	or	$3,$3,$2
	li	$2,4			# 0x4
	sw	$4,24($19)
	beq	$5,$2,$L126
	sw	$3,28($19)

$L109:
	lw	$2,0($23)
	addiu	$2,$2,1
	sw	$2,0($23)
	lw	$16,28($sp)
$L129:
	move	$fp,$0
	j	$L82
	sw	$0,16($16)

$L124:
	lw	$21,16($sp)
	addiu	$16,$4,24
	move	$5,$16
	move	$4,$18
	move	$6,$19
	jal	av_get_packet
	lw	$17,20($21)

	lw	$8,28($sp)
	lw	$3,0($21)
	lw	$2,16($8)
	sw	$3,24($16)
	lw	$5,0($17)
	lw	$3,28($16)
	xori	$2,$2,0x4
	sltu	$2,$2,1
	or	$3,$3,$2
	sra	$4,$5,31
	sw	$3,28($16)
	sw	$4,12($16)
	j	$L100
	sw	$5,8($16)

$L126:
	beq	$21,$0,$L109
	li	$2,1000			# 0x3e8

	lw	$3,20($21)
	lw	$14,64($21)
	mult	$14,$2
	lw	$8,0($3)
	lw	$3,28($sp)
	lw	$2,68($21)
	mflo	$14
	lh	$4,156($3)
	mfhi	$15
	addiu	$8,$8,-1
	sra	$7,$2,31
	mul	$18,$15,$8
	mul	$17,$7,$4
	multu	$8,$14
	move	$6,$2
	mflo	$10
	mfhi	$11
	multu	$4,$6
	sra	$9,$8,31
	sra	$3,$4,31
	mflo	$12
	mfhi	$13
	mul	$16,$9,$14
	mul	$8,$3,$6
	addu	$14,$16,$18
	addu	$6,$8,$17
	addu	$4,$10,$12
	addu	$11,$14,$11
	addu	$13,$6,$13
	sltu	$2,$4,$10
	addu	$5,$11,$13
	addu	$5,$2,$5
	sw	$4,8($19)
	j	$L109
	sw	$5,12($19)

$L125:
	jal	get_byte
	move	$4,$18

	move	$4,$18
	jal	get_byte
	move	$22,$2

	move	$4,$18
	jal	get_le16
	move	$17,$2

	lw	$3,76($sp)
	move	$5,$2
	addiu	$2,$20,-4
	beq	$3,$0,$L104
	andi	$20,$2,0xffff

	andi	$3,$22,0x00ff
	andi	$2,$17,0x00ff
	divu	$0,$3,$2
	teq	$2,$0,7
	li	$2,8			# 0x8
	mflo	$3
	beq	$3,$2,$L127
	sw	$0,108($16)

	lw	$4,8($16)
$L107:
	andi	$2,$5,0xffff
	srl	$2,$2,2
	li	$3,1			# 0x1
	sw	$2,64($4)
	j	$L104
	sw	$3,68($4)

$L127:
	lw	$4,8($16)
	li	$2,65536			# 0x10000
	ori	$2,$2,0x5
	j	$L107
	sw	$2,228($4)

	.set	macro
	.set	reorder
	.end	nsv_read_chunk
	.section	.text.nsv_read_packet,"ax",@progbits
	.align	2
	.align	5
	.ent	nsv_read_packet
	.type	nsv_read_packet, @function
nsv_read_packet:
	.frame	$sp,32,$31		# vars= 0, regs= 4/0, args= 16, gp= 0
	.mask	0x80070000,-4
	.fmask	0x00000000,0
	addiu	$sp,$sp,-32
	sw	$17,20($sp)
	sw	$31,28($sp)
	sw	$18,24($sp)
	sw	$16,16($sp)
	lw	$16,12($4)
	lw	$2,40($16)
	.set	noreorder
	.set	nomacro
	bne	$2,$0,$L131
	move	$17,$5
	.set	macro
	.set	reorder

	lw	$2,96($16)
	beq	$2,$0,$L155
$L137:
	li	$18,1			# 0x1
	li	$3,1			# 0x1
$L139:
	sll	$2,$3,6
	sll	$3,$3,3
	subu	$2,$2,$3
	addiu	$2,$2,24
	andi	$3,$17,0x3
	.set	noreorder
	.set	nomacro
	bne	$3,$0,$L140
	addu	$5,$16,$2
	.set	macro
	.set	reorder