nsvdec.s

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」· S 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