gxf.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 1,973 行 · 第 1/2 页

	.file	1 "gxf.c"
	.section .mdebug.abi32
	.previous
	.section	.text.parse_packet_header,"ax",@progbits
	.align	2
	.align	5
	.ent	parse_packet_header
	.type	parse_packet_header, @function
parse_packet_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	$18,24($sp)
	sw	$17,20($sp)
	sw	$16,16($sp)
	sw	$31,28($sp)
	move	$16,$4
	move	$18,$6
	jal	get_be32
	move	$17,$5

	beq	$2,$0,$L12
	move	$4,$16

$L2:
	move	$2,$0
$L9:
	lw	$31,28($sp)
	lw	$18,24($sp)
	lw	$17,20($sp)
	lw	$16,16($sp)
	j	$31
	addiu	$sp,$sp,32

$L12:
	jal	get_byte
	nop

	li	$3,1			# 0x1
	bne	$2,$3,$L2
	move	$4,$16

	jal	get_byte
	nop

	sw	$2,0($17)
	jal	get_be32
	move	$4,$16

	move	$3,$2
	sra	$2,$2,24
	slt	$5,$3,16
	bne	$2,$0,$L2
	sw	$3,0($18)

	addiu	$2,$3,-16
	bne	$5,$0,$L2
	move	$4,$16

	jal	get_be32
	sw	$2,0($18)

	bne	$2,$0,$L2
	move	$4,$16

	jal	get_byte
	nop

	li	$3,225			# 0xe1
	bne	$2,$3,$L2
	move	$4,$16

	jal	get_byte
	nop

	xori	$2,$2,0xe2
	j	$L9
	sltu	$2,$2,1

	.set	macro
	.set	reorder
	.end	parse_packet_header
	.section	.text.gxf_resync_media,"ax",@progbits
	.align	2
	.align	5
	.ent	gxf_resync_media
	.type	gxf_resync_media, @function
gxf_resync_media:
	.frame	$sp,88,$31		# vars= 24, regs= 10/0, args= 24, gp= 0
	.mask	0xc0ff0000,-4
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-88
	sw	$19,60($sp)
	addiu	$19,$4,16
	move	$4,$19
	sw	$fp,80($sp)
	sw	$23,76($sp)
	sw	$22,72($sp)
	sw	$21,68($sp)
	sw	$20,64($sp)
	sw	$17,52($sp)
	sw	$16,48($sp)
	sw	$31,84($sp)
	sw	$18,56($sp)
	lw	$fp,104($sp)
	lw	$21,108($sp)
	move	$16,$6
	jal	get_be32
	move	$17,$7

	move	$20,$2
	li	$3,-2147483648			# 0xffffffff80000000
	move	$2,$0
	move	$22,$0
	move	$23,$0
	sw	$2,32($sp)
	sw	$3,36($sp)
$L41:
	bne	$20,$0,$L48
	addiu	$2,$16,-1

	addiu	$4,$16,-1
$L49:
	sltu	$2,$4,$16
	addiu	$5,$17,-1
	addu	$5,$2,$5
	li	$2,-1			# 0xffffffffffffffff
	move	$16,$4
	beq	$4,$2,$L42
	move	$17,$5

$L22:
	jal	url_feof
	move	$4,$19

	bne	$2,$0,$L46
	or	$2,$22,$23

	jal	get_byte
	move	$4,$19

	move	$18,$2
	move	$20,$2
	li	$2,1			# 0x1
	bne	$18,$2,$L41
	nop

	jal	url_ftell
	move	$4,$19

	li	$6,-5			# 0xfffffffffffffffb
	move	$4,$19
	li	$7,-1			# 0xffffffffffffffff
	sw	$2,40($sp)
	sw	$3,44($sp)
	jal	url_fseek
	sw	$18,16($sp)

	move	$4,$19
	addiu	$5,$sp,28
	jal	parse_packet_header
	addiu	$6,$sp,24

	beq	$2,$0,$L30
	lw	$3,28($sp)

	li	$2,191			# 0xbf
	beq	$3,$2,$L43
	nop

$L30:
	lw	$6,40($sp)
$L47:
	lw	$7,44($sp)
$L51:
	move	$4,$19
	jal	url_fseek
	sw	$0,16($sp)

	beq	$20,$0,$L49
	addiu	$4,$16,-1

	addiu	$2,$16,-1
$L48:
	sltu	$4,$2,$16
	addiu	$3,$17,-1
	addu	$3,$4,$3
	move	$16,$2
	li	$2,-1			# 0xffffffffffffffff
	beq	$16,$2,$L45
	move	$17,$3

$L18:
	jal	url_feof
	move	$4,$19

	bne	$2,$0,$L46
	or	$2,$22,$23

	jal	get_byte
	move	$4,$19

	sll	$3,$20,8
	j	$L41
	or	$20,$3,$2

$L42:
	bne	$5,$2,$L22
	nop

$L16:
	or	$2,$22,$23
$L46:
	beq	$2,$0,$L50
	lw	$2,32($sp)

	move	$4,$19
	move	$6,$22
	move	$7,$23
	jal	url_fseek
	sw	$0,16($sp)

	lw	$2,32($sp)
$L50:
	lw	$3,36($sp)
	lw	$31,84($sp)
	lw	$fp,80($sp)
	lw	$23,76($sp)
	lw	$22,72($sp)
	lw	$21,68($sp)
	lw	$20,64($sp)
	lw	$19,60($sp)
	lw	$18,56($sp)
	lw	$17,52($sp)
	lw	$16,48($sp)
	j	$31
	addiu	$sp,$sp,88

$L45:
	bne	$3,$2,$L18
	or	$2,$22,$23

	j	$L46
	nop

$L43:
	jal	get_byte
	move	$4,$19

	jal	get_byte
	move	$4,$19

	move	$4,$19
	jal	get_be32
	move	$18,$2

	move	$4,$19
	move	$3,$0
	sw	$2,32($sp)
	jal	url_ftell
	sw	$3,36($sp)

	addiu	$4,$2,-22
	sltu	$6,$4,$2
	addiu	$5,$3,-1
	addu	$5,$6,$5
	move	$22,$4
	bltz	$fp,$L28
	move	$23,$5

	bne	$18,$fp,$L47
	lw	$6,40($sp)

$L28:
	bltz	$21,$L16
	lw	$3,36($sp)

	sra	$5,$21,31
	slt	$2,$3,$5
	bne	$2,$0,$L47
	lw	$6,40($sp)

	bne	$3,$5,$L46
	or	$2,$22,$23

	lw	$3,32($sp)
	sltu	$2,$3,$21
	beq	$2,$0,$L46
	or	$2,$22,$23

	j	$L51
	lw	$7,44($sp)

	.set	macro
	.set	reorder
	.end	gxf_resync_media
	.section	.text.gxf_read_timestamp,"ax",@progbits
	.align	2
	.align	5
	.ent	gxf_read_timestamp
	.type	gxf_read_timestamp, @function
gxf_read_timestamp:
	.frame	$sp,48,$31		# vars= 0, regs= 6/0, args= 24, gp= 0
	.mask	0x801f0000,-4
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-48
	sw	$31,44($sp)
	sw	$20,40($sp)
	sw	$19,36($sp)
	sw	$18,32($sp)
	sw	$17,28($sp)
	move	$18,$6
	sw	$16,24($sp)
	lw	$7,4($18)
	lw	$6,0($6)
	addiu	$20,$4,16
	move	$19,$4
	move	$4,$20
	lw	$16,64($sp)
	lw	$17,68($sp)
	jal	url_fseek
	sw	$0,16($sp)

	lw	$8,0($18)
	lw	$9,4($18)
	subu	$6,$16,$8
	subu	$7,$17,$9
	sltu	$2,$16,$6
	subu	$2,$7,$2
	move	$4,$19
	move	$7,$2
	li	$2,-1			# 0xffffffffffffffff
	sw	$2,20($sp)
	jal	gxf_resync_media
	sw	$2,16($sp)

	move	$4,$20
	move	$16,$2
	jal	url_ftell
	move	$17,$3

	sw	$2,0($18)
	sw	$3,4($18)
	move	$2,$16
	move	$3,$17
	lw	$31,44($sp)
	lw	$20,40($sp)
	lw	$19,36($sp)
	lw	$18,32($sp)
	lw	$17,28($sp)
	lw	$16,24($sp)
	j	$31
	addiu	$sp,$sp,48

	.set	macro
	.set	reorder
	.end	gxf_read_timestamp
	.section	.text.gxf_seek,"ax",@progbits
	.align	2
	.align	5
	.ent	gxf_seek
	.type	gxf_seek, @function
gxf_seek:
	.frame	$sp,48,$31		# vars= 0, regs= 6/0, args= 24, gp= 0
	.mask	0x801f0000,-4
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-48
	sll	$5,$5,2
	sw	$20,40($sp)
	sw	$31,44($sp)
	sw	$19,36($sp)
	sw	$18,32($sp)
	sw	$17,28($sp)
	sw	$16,24($sp)
	addu	$5,$5,$4
	lw	$2,100($5)
	move	$20,$4
	lw	$17,92($2)
	lw	$16,88($2)
	slt	$2,$7,$17
	lw	$18,100($4)
	move	$5,$17
	bne	$2,$0,$L55
	move	$4,$16

	beq	$7,$17,$L70
	sltu	$2,$6,$16

	move	$16,$6
	move	$17,$7
$L55:
	subu	$6,$16,$4
	sltu	$2,$16,$6
	subu	$7,$17,$5
	subu	$7,$7,$2
	move	$4,$18
	li	$2,5			# 0x5
	jal	av_index_search_timestamp
	sw	$2,16($sp)

	bltz	$2,$L57
	move	$6,$2

	lw	$3,148($18)
	sll	$4,$2,3
	lw	$5,144($18)
	sll	$2,$2,5
	subu	$2,$2,$4
	addiu	$3,$3,-2
	addu	$4,$5,$2
	slt	$3,$6,$3
	lw	$8,0($4)
	beq	$3,$0,$L71
	lw	$9,4($4)

	lw	$2,48($4)
	lw	$3,52($4)
	subu	$4,$2,$8
	sltu	$6,$2,$4
	subu	$5,$3,$9
	subu	$5,$5,$6
	move	$18,$4
	bgtu	$5,$0,$L61
	move	$19,$5

	beq	$5,$0,$L72
	li	$2,196608			# 0x30000

	li	$18,196608			# 0x30000
$L74:
	ori	$18,$18,0x2000
	j	$L61
	move	$19,$0

$L71:
	li	$18,104857600			# 0x6400000
	move	$19,$0
$L61:
	move	$6,$8
	move	$7,$9
	addiu	$4,$20,16
	jal	url_fseek
	sw	$0,16($sp)

	move	$4,$20
	move	$6,$18
	move	$7,$19
	li	$2,-1			# 0xffffffffffffffff
	sw	$2,16($sp)
	jal	gxf_resync_media
	sw	$16,20($sp)

	subu	$4,$2,$16
	sltu	$6,$2,$4
	subu	$5,$3,$17
	subu	$5,$5,$6
	move	$7,$5
	blez	$5,$L73
	move	$6,$4

$L57:
	lw	$31,44($sp)
$L77:
	lw	$20,40($sp)
	lw	$19,36($sp)
$L79:
	lw	$18,32($sp)
	lw	$17,28($sp)
	lw	$16,24($sp)
	li	$2,-1			# 0xffffffffffffffff
	j	$31
	addiu	$sp,$sp,48

$L73:
	bne	$5,$0,$L75
	subu	$2,$0,$6

	bleu	$4,$0,$L76
	subu	$3,$0,$7

$L64:
	bgtz	$7,$L77
	lw	$31,44($sp)

	bne	$7,$0,$L78
	lw	$20,40($sp)

	sltu	$2,$6,5
	beq	$2,$0,$L79
	lw	$19,36($sp)

	lw	$31,44($sp)
	lw	$20,40($sp)
$L78:
	lw	$19,36($sp)
	lw	$18,32($sp)
	lw	$17,28($sp)
	lw	$16,24($sp)
	move	$2,$0
	j	$31
	addiu	$sp,$sp,48

$L70:
	bne	$2,$0,$L55
	nop

	move	$16,$6
	j	$L55
	move	$17,$7

$L72:
	ori	$2,$2,0x2000
	sltu	$2,$2,$4
	bne	$2,$0,$L61
	nop

	j	$L74
	li	$18,196608			# 0x30000

$L75:
	subu	$3,$0,$7
$L76:
	sltu	$4,$0,$2
	subu	$3,$3,$4
	move	$6,$2
	j	$L64
	move	$7,$3

	.set	macro
	.set	reorder
	.end	gxf_seek
	.section	.rodata.str1.4,"aMS",@progbits,1
	.align	2
$LC0:
	.ascii	"GXF: too many index entries %u (%x)\012\000"
	.align	2
$LC1:
	.ascii	"GXF: invalid index length\012\000"
	.section	.text.gxf_read_index,"ax",@progbits
	.align	2
	.align	5
	.ent	gxf_read_index
	.type	gxf_read_index, @function
gxf_read_index:
	.frame	$sp,88,$31		# vars= 8, regs= 10/0, args= 40, gp= 0
	.mask	0xc0ff0000,-4
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-88
	sw	$31,84($sp)
	sw	$23,76($sp)
	sw	$22,72($sp)
	sw	$21,68($sp)
	sw	$18,56($sp)
	sw	$17,52($sp)
	sw	$16,48($sp)
	sw	$fp,80($sp)
	sw	$20,64($sp)
	sw	$19,60($sp)
	move	$17,$4
	addiu	$22,$4,16
	lw	$2,100($17)
	move	$4,$22
	move	$16,$5
	jal	get_le32
	sw	$2,40($sp)

	move	$4,$22
	jal	get_le32
	move	$18,$2

	move	$21,$2
	sltu	$2,$2,1001
	beq	$2,$0,$L81
	addiu	$23,$16,-8

	sll	$fp,$21,2
$L83:
	sltu	$2,$23,$fp
	beq	$2,$0,$L84
	lw	$4,40($sp)

	lui	$6,%hi($LC1)
	move	$4,$17
	addiu	$6,$6,%lo($LC1)
	jal	av_log
	move	$5,$0

	move	$6,$23
	sra	$7,$23,31
	move	$4,$22
	lw	$31,84($sp)
	lw	$fp,80($sp)
	lw	$23,76($sp)
	lw	$22,72($sp)
	lw	$21,68($sp)
	lw	$20,64($sp)
	lw	$19,60($sp)
	lw	$18,56($sp)
	lw	$17,52($sp)
	lw	$16,48($sp)
	j	url_fskip
	addiu	$sp,$sp,88

$L84:
	move	$6,$0
	move	$7,$0
	sw	$6,16($sp)
	sw	$7,20($sp)
	sw	$0,24($sp)
	sw	$0,28($sp)
	jal	av_add_index_entry
	sw	$0,32($sp)

	beq	$21,$0,$L86
	move	$20,$0

	move	$16,$18
	move	$17,$0
	li	$18,1			# 0x1
	move	$19,$0
$L88:
	jal	get_le32
	move	$4,$22

	move	$3,$0
	srl	$4,$2,22
	sll	$3,$3,10
	or	$3,$4,$3
	sll	$2,$2,10
	lw	$4,40($sp)
	move	$6,$2
	move	$7,$3
	sw	$18,16($sp)
	sw	$19,20($sp)
	sw	$0,24($sp)
	sw	$0,28($sp)
	jal	av_add_index_entry
	sw	$0,32($sp)

	addu	$4,$18,$16
	sltu	$2,$4,$18
	addu	$5,$19,$17
	addu	$5,$2,$5
	addiu	$20,$20,1
	move	$18,$4
	bne	$20,$21,$L88
	move	$19,$5

$L86:
	subu	$6,$23,$fp
	move	$4,$22
	lw	$31,84($sp)
	lw	$fp,80($sp)
	lw	$23,76($sp)
	lw	$22,72($sp)
	lw	$21,68($sp)
	lw	$20,64($sp)
	lw	$19,60($sp)
	lw	$18,56($sp)
	lw	$17,52($sp)
	lw	$16,48($sp)
	sra	$7,$6,31
	j	url_fskip
	addiu	$sp,$sp,88

$L81:
	lui	$6,%hi($LC0)
	move	$7,$21
	addiu	$6,$6,%lo($LC0)
	move	$4,$17
	move	$5,$0
	sw	$21,16($sp)
	jal	av_log
	li	$fp,4000			# 0xfa0

	j	$L83
	li	$21,1000			# 0x3e8

	.set	macro
	.set	reorder
	.end	gxf_read_index
	.section	.rodata.str1.4
	.align	2
$LC2:
	.ascii	"GXF: map packet not found\012\000"
	.align	2
$LC3:
	.ascii	"GXF: unknown version or invalid map preamble\012\000"
	.align	2
$LC4:
	.ascii	"GXF: material data longer than map data\012\000"
	.align	2
$LC5:
	.ascii	"GXF: track description longer than map data\012\000"
	.align	2
$LC6:
	.ascii	"GXF: invalid track type %x\012\000"
	.align	2
$LC7:
	.ascii	"GXF: invalid track id %x\012\000"
	.align	2
$LC8:
	.ascii	"GXF: invalid track description length specified\012\000"
	.align	2
$LC9:
	.ascii	"GXF: sync lost in header\012\000"
	.align	2
$LC10:
	.ascii	"GXF: UMF packet too short\012\000"
	.align	2
$LC11:
	.ascii	"GXF: UMF packet missing\012\000"
	.section	.text.gxf_header,"ax",@progbits
	.align	2
	.align	5
	.ent	gxf_header
	.type	gxf_header, @function
gxf_header:
	.frame	$sp,112,$31		# vars= 56, regs= 10/0, args= 16, gp= 0
	.mask	0xc0ff0000,-4
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-112
	sw	$21,92($sp)
	sw	$18,80($sp)
	addiu	$21,$sp,16
	addiu	$18,$4,16
	sw	$20,88($sp)
	move	$5,$21
	move	$20,$4
	addiu	$6,$sp,20
	move	$4,$18
	sw	$31,108($sp)
	sw	$fp,104($sp)
	sw	$23,100($sp)
	sw	$22,96($sp)
	sw	$19,84($sp)
	sw	$17,76($sp)
	jal	parse_packet_header
	sw	$16,72($sp)

	beq	$2,$0,$L94
	lw	$3,16($sp)

	li	$2,188			# 0xbc
	beq	$3,$2,$L96
	lw	$2,20($sp)

$L94:
	lui	$6,%hi($LC2)
	move	$4,$20
	addiu	$6,$6,%lo($LC2)
	jal	av_log
	move	$5,$0

	move	$2,$0
$L97:
	lw	$31,108($sp)
	lw	$fp,104($sp)
	lw	$23,100($sp)
	lw	$22,96($sp)
	lw	$21,92($sp)
	lw	$20,88($sp)
	lw	$19,84($sp)
	lw	$18,80($sp)
	lw	$17,76($sp)
	lw	$16,72($sp)
	j	$31
	addiu	$sp,$sp,112

$L96:
	move	$4,$18
	addiu	$2,$2,-2
	jal	get_byte
	sw	$2,20($sp)

	li	$3,224			# 0xe0
	beq	$2,$3,$L207
	lui	$6,%hi($LC3)

$L226:
	move	$4,$20
	addiu	$6,$6,%lo($LC3)
	jal	av_log
	move	$5,$0

	j	$L97
	move	$2,$0

$L207:
	jal	get_byte
	move	$4,$18

	li	$3,255			# 0xff
	bne	$2,$3,$L226
	lui	$6,%hi($LC3)

	lw	$2,20($sp)
	move	$4,$18
	addiu	$2,$2,-2
	jal	get_be16
	sw	$2,20($sp)

	lw	$3,20($sp)
	move	$5,$2
	sw	$2,24($sp)
	slt	$2,$3,$2
	bne	$2,$0,$L208
	move	$4,$0

	subu	$2,$3,$5
	li	$5,-2147483648			# 0xffffffff80000000
	sw	$4,48($sp)
	sw	$5,52($sp)
	sw	$4,40($sp)
	sw	$5,44($sp)
	sw	$2,20($sp)
$L205:
	lw	$5,24($sp)
$L230:
	slt	$2,$5,2
	bne	$2,$0,$L227
	move	$6,$5

$L104:
	jal	get_byte
	move	$4,$18

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

	lw	$5,24($sp)
	move	$3,$2
	addiu	$5,$5,-2
	slt	$2,$5,$2
	bne	$2,$0,$L105
	sw	$5,24($sp)

	subu	$5,$5,$3
	li	$2,4			# 0x4
	beq	$3,$2,$L209
	sw	$5,24($sp)

	move	$6,$3
	sra	$7,$3,31
	jal	url_fskip
	move	$4,$18

	lw	$5,24($sp)
	slt	$2,$5,2
	beq	$2,$0,$L104
	nop

$L105:
	move	$6,$5
$L227:
	sra	$7,$5,31
	jal	url_fskip
	move	$4,$18

	lw	$2,20($sp)
	move	$4,$18
	addiu	$2,$2,-2
	jal	get_be16
	sw	$2,20($sp)

	lw	$3,20($sp)
	move	$5,$2
	sw	$2,24($sp)
	slt	$2,$3,$2
	bne	$2,$0,$L210
	lui	$6,%hi($LC5)

	subu	$2,$3,$5
	sw	$0,32($sp)
	sw	$0,36($sp)
	sw	$2,20($sp)
$L206:
	lw	$2,24($sp)
$L221:
	blez	$2,$L211
	addiu	$5,$2,-4

	move	$4,$18
	jal	get_byte
	sw	$5,24($sp)

	move	$4,$18
	jal	get_byte
	move	$23,$2

	move	$4,$18
	jal	get_be16
	move	$22,$2

	move	$16,$2
	lw	$2,24($sp)
	lui	$3,%hi(ff_frame_rate_tab)
	subu	$5,$2,$16
	addiu	$fp,$3,%lo(ff_frame_rate_tab)
	sw	$0,64($sp)
	sw	$0,60($sp)
	sw	$0,56($sp)
	sw	$5,24($sp)
$L116:
	slt	$2,$16,2
	bne	$2,$0,$L228
	move	$6,$16

	jal	get_byte
	move	$4,$18

	move	$4,$18
	move	$19,$2
	jal	get_byte
	addiu	$16,$16,-2

	move	$17,$2
	slt	$2,$16,$2
	bne	$2,$0,$L118
	li	$2,4			# 0x4

	beq	$17,$2,$L212
	move	$6,$17

	sra	$7,$17,31
	jal	url_fskip
	move	$4,$18

$L127:
	j	$L116
	subu	$16,$16,$17

$L212:
	jal	get_be32
	move	$4,$18

	move	$3,$2
	li	$2,80			# 0x50
	beq	$19,$2,$L213
	li	$2,82			# 0x52

	bne	$19,$2,$L127
	addiu	$2,$3,-1

	sltu	$2,$2,2
	beq	$2,$0,$L127
	nop

	subu	$16,$16,$17
	j	$L116
	sw	$3,64($sp)

$L118:
	move	$6,$16
$L228:
	sra	$7,$16,31
	jal	url_fskip
	move	$4,$18

	andi	$2,$23,0x80
	beq	$2,$0,$L214
	andi	$3,$22,0xc0

	li	$2,192			# 0xc0
	beq	$3,$2,$L132
	lui	$6,%hi($LC7)