mpc.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 793 行

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

lw	$4,4($4)
li	$2,77			# 0x4d
lbu	$3,0($4)
beq	$3,$2,$L15
li	$2,73			# 0x49

beq	$3,$2,$L16
nop

$L4:
j	$31
move	$2,$0

$L16:
lbu	$3,1($4)
li	$2,68			# 0x44
bne	$3,$2,$L4
nop

lbu	$3,2($4)
li	$2,51			# 0x33
bne	$3,$2,$L4
nop

j	$31
li	$2,50			# 0x32

$L15:
lbu	$3,1($4)
li	$2,80			# 0x50
bne	$3,$2,$L4
nop

lbu	$3,2($4)
li	$2,43			# 0x2b
bne	$3,$2,$L4
nop

lbu	$3,3($4)
li	$2,23			# 0x17
beq	$3,$2,$L7
nop

li	$2,7			# 0x7
bne	$3,$2,$L4
nop

$L7:
j	$31
li	$2,100			# 0x64

.set	macro
.set	reorder
.end	mpc_probe
.section	.text.mpc_read_seek,"ax",@progbits
.align	2
.align	5
.ent	mpc_read_seek
.type	mpc_read_seek, @function
mpc_read_seek:
.frame	$sp,112,$31		# vars= 56, regs= 8/0, args= 24, gp= 0
.mask	0x807f0000,-4
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-112
sw	$16,80($sp)
sll	$5,$5,2
addiu	$16,$6,-32
sw	$22,104($sp)
sw	$19,92($sp)
sw	$18,88($sp)
sw	$17,84($sp)
sw	$31,108($sp)
sw	$21,100($sp)
sw	$20,96($sp)
addu	$5,$5,$4
sltu	$2,$16,$6
addiu	$17,$7,-1
lw	$20,100($5)
addu	$17,$2,$17
lw	$2,128($sp)
move	$22,$4
sw	$2,16($sp)
move	$18,$6
move	$19,$7
move	$4,$20
move	$6,$16
move	$7,$17
jal	av_index_search_timestamp
lw	$21,12($22)

bltz	$2,$L18
move	$3,$2

sll	$3,$3,3
lw	$4,144($20)
sll	$2,$2,5
subu	$2,$2,$3
addu	$2,$2,$4
lw	$3,0($2)
move	$2,$0
sw	$3,4($21)
$L20:
lw	$31,108($sp)
lw	$22,104($sp)
lw	$21,100($sp)
lw	$20,96($sp)
lw	$19,92($sp)
lw	$18,88($sp)
lw	$17,84($sp)
lw	$16,80($sp)
j	$31
addiu	$sp,$sp,112

$L18:
bltz	$19,$L21
move	$5,$0

slt	$2,$19,$5
bne	$2,$0,$L25
lw	$4,12($21)

beq	$19,$0,$L52
nop

$L21:
j	$L20
li	$2,-1			# 0xffffffffffffffff

$L52:
sltu	$2,$18,$4
beq	$2,$0,$L20
li	$2,-1			# 0xffffffffffffffff

$L25:
lw	$2,24($21)
beq	$2,$0,$L36
lw	$19,4($21)

addiu	$2,$2,-1
slt	$3,$0,$17
sw	$2,4($21)
$L46:
beq	$3,$0,$L51
addiu	$18,$sp,24

$L55:
move	$4,$22
jal	av_read_frame
move	$5,$18

bltz	$2,$L37
move	$4,$18

$L53:
lw	$2,60($sp)
beq	$2,$0,$L55
addiu	$18,$sp,24

jal	$2
addiu	$18,$sp,24

move	$4,$22
jal	av_read_frame
move	$5,$18

bgez	$2,$L53
move	$4,$18

$L37:
li	$2,-1			# 0xffffffffffffffff
j	$L20
sw	$19,4($21)

$L54:
beq	$2,$0,$L20
move	$2,$0

jal	av_read_frame
nop

bltz	$2,$L37
move	$4,$18

lw	$2,60($sp)
beq	$2,$0,$L51
nop

jal	$2
nop

$L51:
lw	$2,4($21)
addiu	$18,$sp,24
move	$4,$22
move	$5,$18
beq	$17,$0,$L54
sltu	$2,$2,$16

j	$L20
move	$2,$0

$L36:
j	$L46
slt	$3,$0,$17

.set	macro
.set	reorder
.end	mpc_read_seek
.section	.text.mpc_read_close,"ax",@progbits
.align	2
.align	5
.ent	mpc_read_close
.type	mpc_read_close, @function
mpc_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	$4,12($4)
jal	av_freep
addiu	$4,$4,16

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

.set	macro
.set	reorder
.end	mpc_read_close
.section	.rodata.str1.4,"aMS",@progbits,1
.align	2
$LC0:
.ascii	"Not a Musepack file\012\000"
.align	2
$LC1:
.ascii	"Skipping %d(%X) bytes of ID3 data\012\000"
.align	2
$LC2:
.ascii	"Can demux Musepack SV7, got version %02X\012\000"
.align	2
$LC3:
.ascii	"Too many frames, seeking is not possible\012\000"
.globl	__divdi3
.section	.text.mpc_read_header,"ax",@progbits
.align	2
.align	5
.ent	mpc_read_header
.type	mpc_read_header, @function
mpc_read_header:
.frame	$sp,56,$31		# vars= 0, regs= 8/0, args= 24, gp= 0
.mask	0x807f0000,-4
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-56
sw	$19,36($sp)
addiu	$19,$4,16
sw	$22,48($sp)
sw	$21,44($sp)
sw	$31,52($sp)
sw	$20,40($sp)
sw	$18,32($sp)
sw	$17,28($sp)
sw	$16,24($sp)
move	$21,$4
move	$4,$19
jal	get_le24
lw	$20,12($21)

move	$3,$2
li	$2,2818048			# 0x2b0000
ori	$22,$2,0x504d
beq	$3,$22,$L59
li	$2,3342336			# 0x330000

ori	$2,$2,0x4449
bne	$3,$2,$L74
li	$6,3			# 0x3

move	$7,$0
jal	url_fskip
move	$4,$19

jal	get_byte
move	$4,$19

move	$4,$19
jal	get_byte
sll	$18,$2,21

sll	$2,$2,14
move	$4,$19
jal	get_byte
or	$18,$18,$2

move	$4,$19
jal	get_byte
move	$16,$2

or	$18,$18,$2
sll	$16,$16,7
or	$16,$16,$18
lui	$6,%hi($LC1)
addiu	$6,$6,%lo($LC1)
move	$4,$21
li	$5,2			# 0x2
move	$7,$16
sra	$17,$16,31
jal	av_log
sw	$16,16($sp)

move	$4,$19
move	$6,$16
jal	url_fskip
move	$7,$17

jal	get_le24
move	$4,$19

bne	$2,$22,$L78
lui	$6,%hi($LC0)

$L59:
jal	get_byte
move	$4,$19

move	$7,$2
sw	$2,0($20)
li	$2,7			# 0x7
beq	$7,$2,$L65
li	$2,23			# 0x17

bne	$7,$2,$L75
lui	$6,%hi($LC2)

$L65:
jal	get_le32
move	$4,$19

move	$3,$0
srl	$4,$2,28
sll	$7,$3,4
move	$5,$2
or	$7,$4,$7
sll	$6,$2,4
blez	$7,$L76
sw	$5,12($20)

lui	$6,%hi($LC3)
$L79:
move	$4,$21
addiu	$6,$6,%lo($LC3)
jal	av_log
move	$5,$0

li	$2,-1			# 0xffffffffffffffff
$L63:
lw	$31,52($sp)
lw	$22,48($sp)
lw	$21,44($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,56

$L76:
bne	$7,$0,$L68
sltu	$2,$6,-1

beq	$2,$0,$L79
lui	$6,%hi($LC3)

$L68:
jal	av_malloc
sll	$4,$5,4

sw	$2,16($20)
li	$3,8			# 0x8
li	$2,-1			# 0xffffffffffffffff
sw	$2,8($20)
sw	$3,20($20)
sw	$0,4($20)
sw	$0,24($20)
move	$4,$21
jal	av_new_stream
move	$5,$0

beq	$2,$0,$L77
move	$18,$2

lw	$16,8($2)
li	$3,1			# 0x1
li	$2,65536			# 0x10000
li	$4,16			# 0x10
sw	$3,224($16)
ori	$2,$2,0x501f
li	$3,2			# 0x2
sw	$3,68($16)
sw	$4,28($16)
sw	$4,392($16)
sw	$2,228($16)
jal	av_mallocz
li	$4,24			# 0x18

lw	$3,8($18)
sw	$2,24($16)
lw	$5,24($3)
move	$4,$19
jal	get_buffer
li	$6,16			# 0x10

lw	$6,8($18)
move	$4,$18
lw	$2,24($6)
li	$5,32			# 0x20
lbu	$3,2($2)
lui	$2,%hi(mpc_rate)
andi	$3,$3,0x3
addiu	$2,$2,%lo(mpc_rate)
sll	$3,$3,2
addu	$3,$3,$2
lw	$7,0($3)
sw	$7,64($6)
jal	av_set_pts_info
li	$6,1152			# 0x480

lw	$3,12($20)
lw	$8,8($18)
li	$4,1151991808			# 0x44aa0000
ori	$4,$4,0x2000
multu	$3,$4
lw	$2,64($8)
move	$3,$0
move	$6,$2
sra	$7,$2,31
mflo	$4
move	$2,$0
mfhi	$5
sw	$2,3824($21)
jal	__divdi3
sw	$3,3828($21)

sw	$2,3832($21)
sw	$3,3836($21)
lw	$31,52($sp)
lw	$22,48($sp)
lw	$21,44($sp)
lw	$20,40($sp)
lw	$19,36($sp)
lw	$18,32($sp)
lw	$17,28($sp)
lw	$16,24($sp)
move	$2,$0
j	$31
addiu	$sp,$sp,56

$L74:
lui	$6,%hi($LC0)
$L78:
move	$4,$21
addiu	$6,$6,%lo($LC0)
jal	av_log
move	$5,$0

lw	$31,52($sp)
lw	$22,48($sp)
lw	$21,44($sp)
lw	$20,40($sp)
lw	$19,36($sp)
lw	$18,32($sp)
lw	$17,28($sp)
lw	$16,24($sp)
li	$2,-1			# 0xffffffffffffffff
j	$31
addiu	$sp,$sp,56

$L75:
move	$4,$21
addiu	$6,$6,%lo($LC2)
jal	av_log
move	$5,$0

j	$L63
li	$2,-1			# 0xffffffffffffffff

$L77:
j	$L63
li	$2,-12			# 0xfffffffffffffff4

.set	macro
.set	reorder
.end	mpc_read_header
.section	.text.mpc_read_packet,"ax",@progbits
.align	2
.align	5
.ent	mpc_read_packet
.type	mpc_read_packet, @function
mpc_read_packet:
.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	$21,68($sp)
sw	$20,64($sp)
sw	$31,84($sp)
sw	$fp,80($sp)
sw	$23,76($sp)
sw	$22,72($sp)
sw	$19,60($sp)
sw	$18,56($sp)
sw	$17,52($sp)
sw	$16,48($sp)
lw	$16,12($4)
move	$21,$5
lw	$17,4($16)
lw	$2,12($16)
move	$20,$4
sltu	$2,$17,$2
bne	$2,$0,$L81
move	$5,$17

li	$3,-1			# 0xffffffffffffffff
$L83:
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)
move	$2,$3
j	$31
addiu	$sp,$sp,88

$L81:
lw	$2,8($16)
addiu	$2,$2,1
beq	$17,$2,$L99
sll	$2,$17,4

lw	$3,16($16)
addu	$2,$2,$3
lw	$6,0($2)
lw	$7,4($2)
addiu	$22,$4,16
move	$4,$22
jal	url_fseek
sw	$0,16($sp)

lw	$5,4($16)
lw	$4,16($16)
sll	$2,$5,4
addu	$2,$2,$4
lw	$3,12($2)
sw	$3,20($16)
move	$23,$3
$L84:
addiu	$2,$5,1
sw	$5,8($16)
move	$4,$22
jal	url_ftell
sw	$2,4($16)

move	$4,$22
sw	$3,44($sp)
jal	get_le32
sw	$2,40($sp)

slt	$3,$23,13
move	$18,$2
beq	$3,$0,$L86
move	$19,$0

li	$4,12			# 0xc
subu	$4,$4,$23
nor	$2,$0,$4
sll	$5,$19,1
sll	$5,$5,$2
srl	$2,$18,$4
andi	$6,$4,0x20
sra	$3,$19,$4
or	$2,$5,$2
li	$4,983040			# 0xf0000
movn	$2,$3,$6
ori	$4,$4,0xffff
and	$2,$2,$4
$L88:
addiu	$fp,$23,20
lw	$6,40($sp)
lw	$7,44($sp)
addu	$19,$2,$fp
move	$4,$22
jal	url_fseek
sw	$0,16($sp)

addiu	$4,$19,31
li	$2,-32			# 0xffffffffffffffe0
lw	$3,24($16)
and	$4,$4,$2
beq	$17,$3,$L100
sra	$18,$4,3

$L89:
andi	$2,$19,0x1f
sw	$2,20($16)
move	$4,$21
jal	av_new_packet
move	$5,$18

bltz	$2,$L91
sra	$6,$17,31

lw	$3,16($21)
sb	$fp,0($3)
lw	$2,4($16)
lw	$3,12($16)
lw	$4,16($21)
sltu	$2,$3,$2
sb	$2,1($4)
lw	$5,16($21)
sw	$6,4($21)
sw	$17,0($21)
sw	$0,24($21)
addiu	$5,$5,4
move	$4,$22
jal	get_buffer
move	$6,$18

move	$17,$2
lw	$2,20($16)
bne	$2,$0,$L101
move	$4,$22

slt	$2,$17,$18
$L103:
bne	$2,$0,$L102
addiu	$2,$17,4

move	$3,$0
j	$L83
sw	$2,20($21)

$L99:
lw	$23,20($16)
j	$L84
addiu	$22,$4,16

$L86:
jal	get_le32
move	$4,$22

move	$3,$0
li	$6,44			# 0x2c
subu	$6,$6,$23
or	$5,$18,$3
move	$4,$0
or	$4,$4,$2
sll	$3,$5,1
nor	$2,$0,$6
sll	$3,$3,$2
srl	$4,$4,$6
andi	$7,$6,0x20
or	$4,$3,$4
sra	$5,$5,$6
li	$2,983040			# 0xf0000
movn	$4,$5,$7
ori	$2,$2,0xffff
j	$L88
and	$2,$4,$2

$L91:
j	$L83
li	$3,-5			# 0xfffffffffffffffb

$L101:
li	$6,-4			# 0xfffffffffffffffc
li	$7,-1			# 0xffffffffffffffff
li	$2,1			# 0x1
jal	url_fseek
sw	$2,16($sp)

j	$L103
slt	$2,$17,$18

$L100:
lw	$6,16($16)
sll	$5,$17,4
addu	$5,$5,$6
lw	$7,44($sp)
lw	$6,40($sp)
lw	$4,100($20)
sra	$3,$17,31
sw	$6,0($5)
sw	$7,4($5)
sw	$23,12($5)
sw	$18,8($5)
move	$7,$3
li	$5,1			# 0x1
move	$6,$17
sw	$3,20($sp)
sw	$5,32($sp)
sw	$17,16($sp)
sw	$18,24($sp)
jal	av_add_index_entry
sw	$0,28($sp)

lw	$3,24($16)
addiu	$3,$3,1
j	$L89
sw	$3,24($16)

$L102:
lw	$2,36($21)
beq	$2,$0,$L91
nop

jal	$2
move	$4,$21

j	$L83
li	$3,-5			# 0xfffffffffffffffb

.set	macro
.set	reorder
.end	mpc_read_packet
.globl	mpc_demuxer
.section	.rodata.str1.4
.align	2
$LC4:
.ascii	"mpc\000"
.align	2
$LC5:
.ascii	"musepack\000"
.data
.align	2
.type	mpc_demuxer, @object
.size	mpc_demuxer, 64
mpc_demuxer:
.word	$LC4
.word	$LC5
.word	28
.word	mpc_probe
.word	mpc_read_header
.word	mpc_read_packet
.word	mpc_read_close
.word	mpc_read_seek
.space	8
.word	$LC4
.space	20
.rdata
.align	2
.type	mpc_rate, @object
.size	mpc_rate, 16
mpc_rate:
.word	44100
.word	48000
.word	37800
.word	32000
.ident	"GCC: (GNU) 4.1.2"