vocdec.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 401 行

	.file	1 "vocdec.c"
	.section .mdebug.abi32
	.previous
	.section	.rodata.str1.4,"aMS",@progbits,1
	.align	2
$LC0:
	.ascii	"unknown header size: %d\012\000"
	.section	.text.voc_read_header,"ax",@progbits
	.align	2
	.align	5
	.ent	voc_read_header
	.type	voc_read_header, @function
voc_read_header:
	.frame	$sp,32,$31		# vars= 0, regs= 4/0, args= 16, gp= 0
	.mask	0x80070000,-4
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-32
	sw	$16,16($sp)
	addiu	$16,$4,16
	sw	$31,28($sp)
	sw	$17,20($sp)
	li	$6,20			# 0x14
	move	$7,$0
	sw	$18,24($sp)
	move	$17,$4
	move	$4,$16
	jal	url_fskip
	lw	$18,12($17)

	jal	get_le16
	move	$4,$16

	addiu	$3,$2,-22
	li	$2,4			# 0x4
	move	$4,$16
	li	$6,4			# 0x4
	move	$7,$0
	beq	$3,$2,$L2
	move	$5,$0

	lui	$6,%hi($LC0)
	move	$4,$17
	addiu	$6,$6,%lo($LC0)
	jal	av_log
	move	$7,$3

	li	$2,-89			# 0xffffffffffffffa7
$L4:
	lw	$31,28($sp)
	lw	$18,24($sp)
	lw	$17,20($sp)
	lw	$16,16($sp)
	j	$31
	addiu	$sp,$sp,32

$L2:
	jal	url_fskip
	nop

	move	$4,$17
	jal	av_new_stream
	move	$5,$0

	move	$3,$2
	beq	$3,$0,$L4
	li	$2,-12			# 0xfffffffffffffff4

	lw	$3,8($3)
	li	$2,1			# 0x1
	sw	$2,224($3)
	sw	$0,0($18)
	lw	$31,28($sp)
	lw	$18,24($sp)
	lw	$17,20($sp)
	lw	$16,16($sp)
	move	$2,$0
	j	$31
	addiu	$sp,$sp,32

	.set	macro
	.set	reorder
	.end	voc_read_header
	.section	.text.voc_probe,"ax",@progbits
	.align	2
	.align	5
	.ent	voc_probe
	.type	voc_probe, @function
voc_probe:
	.frame	$sp,24,$31		# vars= 0, regs= 2/0, args= 16, gp= 0
	.mask	0x80010000,-4
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-24
	sw	$31,20($sp)
	sw	$16,16($sp)
	lw	$16,4($4)
	lui	$5,%hi(voc_magic)
	move	$4,$16
	addiu	$5,$5,%lo(voc_magic)
	jal	memcmp
	li	$6,20			# 0x14

	bne	$2,$0,$L12
	move	$4,$0

	lbu	$2,23($16)
	lbu	$4,22($16)
	sll	$2,$2,8
	lbu	$3,25($16)
	or	$2,$2,$4
	lbu	$5,24($16)
	sll	$3,$3,8
	nor	$2,$0,$2
	addiu	$2,$2,4660
	or	$3,$3,$5
	xor	$3,$3,$2
	li	$4,10			# 0xa
	li	$2,100			# 0x64
	movz	$4,$2,$3
$L12:
	lw	$31,20($sp)
	lw	$16,16($sp)
	move	$2,$4
	j	$31
	addiu	$sp,$sp,24

	.set	macro
	.set	reorder
	.end	voc_probe
	.section	.text.voc_get_packet,"ax",@progbits
	.align	2
	.align	5
	.globl	voc_get_packet
	.ent	voc_get_packet
	.type	voc_get_packet, @function
voc_get_packet:
	.frame	$sp,56,$31		# vars= 0, regs= 9/0, args= 16, gp= 0
	.mask	0x80ff0000,-8
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-56
	sw	$23,44($sp)
	sw	$22,40($sp)
	sw	$21,36($sp)
	sw	$18,24($sp)
	sw	$17,20($sp)
	sw	$31,48($sp)
	sw	$20,32($sp)
	sw	$19,28($sp)
	sw	$16,16($sp)
	lw	$19,12($4)
	lw	$20,8($6)
	lw	$3,0($19)
	move	$23,$5
	move	$17,$7
	addiu	$18,$4,16
	move	$21,$0
	li	$22,1			# 0x1
$L41:
	bne	$3,$0,$L42
	nop

$L39:
	jal	get_byte
	move	$4,$18

	move	$16,$2
	beq	$2,$0,$L33
	move	$4,$18

$L44:
	jal	get_le24
	addiu	$17,$17,-4

	move	$3,$2
	sw	$2,0($19)
	li	$2,2			# 0x2
	move	$4,$18
	beq	$16,$2,$L41
	sltu	$5,$16,3

	beq	$5,$0,$L26
	li	$2,8			# 0x8

	li	$2,1			# 0x1
	beq	$16,$2,$L43
	move	$6,$3

$L45:
	jal	url_fskip
	sra	$7,$3,31

	lw	$3,0($19)
	move	$4,$18
	sw	$0,0($19)
	jal	get_byte
	subu	$17,$17,$3

	move	$16,$2
	bne	$2,$0,$L44
	move	$4,$18

$L33:
	lw	$31,48($sp)
	lw	$23,44($sp)
	lw	$22,40($sp)
	lw	$21,36($sp)
	lw	$20,32($sp)
	lw	$19,28($sp)
	lw	$18,24($sp)
	lw	$17,20($sp)
	lw	$16,16($sp)
	li	$2,-5			# 0xfffffffffffffffb
	j	$31
	addiu	$sp,$sp,56

$L26:
	beq	$16,$2,$L24
	li	$2,9			# 0x9

	bne	$16,$2,$L45
	move	$6,$3

	jal	get_le32
	move	$4,$18

	sw	$2,64($20)
	jal	get_byte
	move	$4,$18

	sw	$2,392($20)
	jal	get_byte
	move	$4,$18

	sw	$2,68($20)
	jal	get_le16
	move	$4,$18

	lui	$4,%hi(voc_codec_tags)
	addiu	$4,$4,%lo(voc_codec_tags)
	jal	codec_get_id
	move	$5,$2

	sw	$2,228($20)
	move	$4,$18
	li	$6,4			# 0x4
	jal	url_fskip
	move	$7,$0

	lw	$3,0($19)
	addiu	$17,$17,-12
	addiu	$3,$3,-12
	beq	$3,$0,$L39
	sw	$3,0($19)

$L42:
	lw	$3,392($20)
	lw	$2,64($20)
	slt	$5,$0,$17
	mul	$2,$2,$3
	sw	$2,4($20)
	lw	$3,0($19)
	li	$2,2048			# 0x800
	movz	$17,$2,$5
	slt	$4,$3,$17
	move	$6,$3
	movz	$6,$17,$4
	subu	$3,$3,$6
	sw	$3,0($19)
	move	$4,$18
	move	$5,$23
	lw	$31,48($sp)
	lw	$23,44($sp)
	lw	$22,40($sp)
	lw	$21,36($sp)
	lw	$20,32($sp)
	lw	$19,28($sp)
	lw	$18,24($sp)
	lw	$17,20($sp)
	lw	$16,16($sp)
	j	av_get_packet
	addiu	$sp,$sp,56

$L24:
	jal	get_le16
	move	$4,$18

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

	jal	get_byte
	move	$4,$18

	li	$3,65536			# 0x10000
	addiu	$22,$2,1
	subu	$3,$3,$16
	mul	$3,$22,$3
	li	$2,255983616			# 0xf420000
	ori	$2,$2,0x4000
	div	$0,$2,$3
	teq	$3,$0,7
	addiu	$17,$17,-4
	move	$3,$0
	sw	$0,0($19)
	j	$L41
	mflo	$21

$L43:
	jal	get_byte
	move	$4,$18

	li	$3,256			# 0x100
	subu	$3,$3,$2
	li	$2,983040			# 0xf0000
	ori	$2,$2,0x4240
	div	$0,$2,$3
	teq	$3,$0,7
	sw	$22,68($20)
	move	$4,$18
	addiu	$17,$17,-2
	li	$22,1			# 0x1
	mflo	$2
	movn	$2,$21,$21
	jal	get_byte
	sw	$2,64($20)

	lui	$4,%hi(voc_codec_tags)
	addiu	$4,$4,%lo(voc_codec_tags)
	jal	codec_get_id
	move	$5,$2

	sw	$2,228($20)
	jal	av_get_bits_per_sample
	move	$4,$2

	sw	$2,392($20)
	lw	$3,0($19)
	addiu	$3,$3,-2
	j	$L41
	sw	$3,0($19)

	.set	macro
	.set	reorder
	.end	voc_get_packet
	.section	.text.voc_read_packet,"ax",@progbits
	.align	2
	.align	5
	.ent	voc_read_packet
	.type	voc_read_packet, @function
voc_read_packet:
	.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
	.mask	0x00000000,0
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	lw	$6,100($4)
	j	voc_get_packet
	move	$7,$0

	.set	macro
	.set	reorder
	.end	voc_read_packet
	.globl	voc_demuxer
	.section	.rodata.str1.4
	.align	2
$LC1:
	.ascii	"voc\000"
	.align	2
$LC2:
	.ascii	"Creative Voice File format\000"
	.data
	.align	2
	.type	voc_demuxer, @object
	.size	voc_demuxer, 64
voc_demuxer:
	.word	$LC1
	.word	$LC2
	.word	4
	.word	voc_probe
	.word	voc_read_header
	.word	voc_read_packet
	.space	32
	.word	__compound_literal.0
	.space	4
	.align	2
	.type	__compound_literal.0, @object
	.size	__compound_literal.0, 8
__compound_literal.0:
	.word	voc_codec_tags
	.word	0
	.ident	"GCC: (GNU) 4.1.2"