wav.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 942 行

.file	1 "wav.c"
.section .mdebug.abi32
.previous
.section	.text.wav_probe,"ax",@progbits
.align	2
.align	5
.ent	wav_probe
.type	wav_probe, @function
wav_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	$2,8($4)
slt	$2,$2,33
bne	$2,$0,$L2
nop

lw	$4,4($4)
li	$2,82			# 0x52
lbu	$3,0($4)
beq	$3,$2,$L15
nop

$L2:
j	$31
move	$2,$0

$L15:
lbu	$3,1($4)
li	$2,73			# 0x49
bne	$3,$2,$L2
nop

lbu	$3,2($4)
li	$2,70			# 0x46
bne	$3,$2,$L2
nop

lbu	$2,3($4)
bne	$2,$3,$L2
nop

lbu	$3,8($4)
li	$2,87			# 0x57
bne	$3,$2,$L2
nop

lbu	$3,9($4)
li	$2,65			# 0x41
bne	$3,$2,$L2
nop

lbu	$3,10($4)
li	$2,86			# 0x56
bne	$3,$2,$L2
nop

lbu	$3,11($4)
li	$2,69			# 0x45
bne	$3,$2,$L2
nop

j	$31
li	$2,100			# 0x64

.set	macro
.set	reorder
.end	wav_probe
.section	.text.wav_read_close,"ax",@progbits
.align	2
.align	5
.ent	wav_read_close
.type	wav_read_close, @function
wav_read_close:
.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
move	$2,$0

.set	macro
.set	reorder
.end	wav_read_close
.section	.text.wav_write_trailer,"ax",@progbits
.align	2
.align	5
.ent	wav_write_trailer
.type	wav_write_trailer, @function
wav_write_trailer:
.frame	$sp,56,$31		# vars= 0, regs= 7/0, args= 24, gp= 0
.mask	0x803f0000,-8
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-56
sw	$18,32($sp)
sw	$16,24($sp)
sw	$31,48($sp)
sw	$21,44($sp)
sw	$20,40($sp)
sw	$19,36($sp)
sw	$17,28($sp)
addiu	$18,$4,16
lw	$2,52($18)
move	$16,$4
lw	$19,12($16)
beq	$2,$0,$L23
move	$4,$18

lw	$31,48($sp)
$L24:
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

$L23:
lw	$6,0($19)
jal	end_tag
lw	$7,4($19)

jal	url_ftell
move	$4,$18

move	$20,$2
li	$6,4			# 0x4
move	$7,$0
move	$4,$18
move	$21,$3
jal	url_fseek
sw	$0,16($sp)

addiu	$5,$20,-8
jal	put_le32
move	$4,$18

move	$6,$20
move	$7,$21
move	$4,$18
jal	url_fseek
sw	$0,16($sp)

jal	put_flush_packet
move	$4,$18

lw	$8,100($16)
li	$2,1			# 0x1
lw	$9,8($8)
lw	$3,232($9)
beq	$3,$2,$L24
lw	$31,48($sp)

lw	$2,24($19)
lw	$4,16($19)
lw	$3,28($19)
lw	$5,20($19)
subu	$10,$2,$4
sltu	$6,$2,$10
subu	$11,$3,$5
lw	$7,32($19)
lw	$5,64($9)
subu	$11,$11,$6
lw	$6,64($8)
addu	$12,$10,$7
mult	$5,$6
sra	$3,$7,31
lw	$8,68($8)
sltu	$4,$12,$10
addu	$13,$11,$3
addu	$13,$4,$13
mflo	$6
mfhi	$7
move	$4,$12
move	$5,$13
sra	$2,$8,31
sw	$8,16($sp)
jal	av_rescale
sw	$2,20($sp)

move	$16,$2
lw	$2,0($19)
lw	$3,4($19)
addiu	$6,$2,-12
sltu	$5,$6,$2
addiu	$7,$3,-1
addu	$7,$5,$7
move	$4,$18
jal	url_fseek
sw	$0,16($sp)

move	$5,$16
jal	put_le32
move	$4,$18

move	$6,$20
move	$7,$21
move	$4,$18
jal	url_fseek
sw	$0,16($sp)

jal	put_flush_packet
move	$4,$18

lw	$31,48($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

.set	macro
.set	reorder
.end	wav_write_trailer
.section	.rodata.str1.4,"aMS",@progbits,1
.align	2
$LC0:
.ascii	"wav_write_packet: NOPTS\012\000"
.section	.text.wav_write_packet,"ax",@progbits
.align	2
.align	5
.ent	wav_write_packet
.type	wav_write_packet, @function
wav_write_packet:
.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	$31,28($sp)
sw	$16,16($sp)
move	$18,$5
lw	$6,20($18)
lw	$5,16($5)
move	$17,$4
addiu	$4,$4,16
jal	put_buffer
lw	$16,12($17)

lw	$4,0($18)
bne	$4,$0,$L28
lw	$5,4($18)

li	$2,-2147483648			# 0xffffffff80000000
beq	$5,$2,$L26
nop

$L28:
lw	$7,20($16)
slt	$2,$5,$7
beq	$2,$0,$L35
lw	$6,16($16)

$L29:
sw	$4,16($16)
sw	$5,20($16)
lw	$7,4($18)
lw	$5,28($16)
lw	$4,24($16)
slt	$2,$5,$7
beq	$2,$0,$L36
lw	$6,0($18)

$L31:
lw	$2,32($18)
sw	$6,24($16)
sw	$2,32($16)
sw	$7,28($16)
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

$L36:
beq	$5,$7,$L37
sltu	$2,$4,$6

move	$6,$4
j	$L31
move	$7,$5

$L35:
beq	$5,$7,$L38
sltu	$2,$4,$6

move	$4,$6
$L39:
move	$5,$7
sw	$4,16($16)
sw	$5,20($16)
lw	$7,4($18)
lw	$5,28($16)
lw	$4,24($16)
slt	$2,$5,$7
bne	$2,$0,$L31
lw	$6,0($18)

j	$L36
nop

$L26:
lui	$6,%hi($LC0)
move	$4,$17
addiu	$6,$6,%lo($LC0)
jal	av_log
move	$5,$0

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

$L38:
bne	$2,$0,$L29
nop

j	$L39
move	$4,$6

$L37:
bne	$2,$0,$L31
nop

move	$6,$4
j	$L31
move	$7,$5

.set	macro
.set	reorder
.end	wav_write_packet
.section	.text.wav_read_seek,"ax",@progbits
.align	2
.align	5
.ent	wav_read_seek
.type	wav_read_seek, @function
wav_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

lw	$2,100($4)
lw	$3,8($2)
li	$2,-131072			# 0xfffffffffffe0000
lw	$8,228($3)
ori	$2,$2,0xb000
addu	$8,$8,$2
li	$3,1			# 0x1
sll	$3,$3,$8
sltu	$8,$8,6
andi	$3,$3,0x33
beq	$8,$0,$L41
lw	$2,16($sp)

beq	$3,$0,$L41
nop

j	$31
li	$2,-1			# 0xffffffffffffffff

$L41:
j	pcm_read_seek
sw	$2,16($sp)

.set	macro
.set	reorder
.end	wav_read_seek
.section	.rodata.str1.4
.align	2
$LC1:
.ascii	"RIFF\000"
.align	2
$LC2:
.ascii	"WAVE\000"
.align	2
$LC3:
.ascii	"fmt \000"
.align	2
$LC4:
.ascii	"fact\000"
.align	2
$LC5:
.ascii	"data\000"
.section	.text.wav_write_header,"ax",@progbits
.align	2
.align	5
.ent	wav_write_header
.type	wav_write_header, @function
wav_write_header:
.frame	$sp,40,$31		# vars= 0, regs= 6/0, args= 16, gp= 0
.mask	0x801f0000,-4
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-40
sw	$18,24($sp)
lui	$5,%hi($LC1)
addiu	$18,$4,16
sw	$31,36($sp)
sw	$20,32($sp)
sw	$17,20($sp)
sw	$16,16($sp)
move	$20,$4
sw	$19,28($sp)
addiu	$5,$5,%lo($LC1)
move	$4,$18
jal	put_tag
lw	$19,12($20)

move	$4,$18
jal	put_le32
move	$5,$0

lui	$5,%hi($LC2)
move	$4,$18
jal	put_tag
addiu	$5,$5,%lo($LC2)

lui	$5,%hi($LC3)
move	$4,$18
jal	start_tag
addiu	$5,$5,%lo($LC3)

move	$16,$2
lw	$2,100($20)
move	$4,$18
lw	$5,8($2)
jal	put_wav_header
move	$17,$3

move	$6,$16
move	$7,$17
bltz	$2,$L54
move	$4,$18

jal	end_tag
nop

lw	$6,100($20)
li	$3,1			# 0x1
lw	$2,8($6)
lw	$4,232($2)
beq	$4,$3,$L56
lui	$5,%hi($LC4)

lw	$2,52($18)
addiu	$5,$5,%lo($LC4)
beq	$2,$0,$L55
move	$4,$18

$L50:
lw	$2,8($6)
$L56:
move	$4,$6
lw	$7,64($2)
li	$6,1			# 0x1
jal	av_set_pts_info
li	$5,64			# 0x40

li	$3,2147418112			# 0x7fff0000
li	$2,-1			# 0xffffffffffffffff
ori	$3,$3,0xffff
sw	$2,16($19)
sw	$3,20($19)
move	$2,$0
move	$3,$0
lui	$5,%hi($LC5)
addiu	$5,$5,%lo($LC5)
move	$4,$18
sw	$0,32($19)
sw	$2,24($19)
jal	start_tag
sw	$3,28($19)

sw	$2,0($19)
sw	$3,4($19)
jal	put_flush_packet
move	$4,$18

move	$2,$0
$L49:
lw	$31,36($sp)
lw	$20,32($sp)
lw	$19,28($sp)
lw	$18,24($sp)
lw	$17,20($sp)
lw	$16,16($sp)
j	$31
addiu	$sp,$sp,40

$L55:
jal	start_tag
nop

move	$16,$2
move	$17,$3
move	$4,$18
jal	put_le32
move	$5,$0

move	$6,$16
move	$4,$18
jal	end_tag
move	$7,$17

j	$L50
lw	$6,100($20)

$L54:
jal	av_free
move	$4,$19

j	$L49
li	$2,-1			# 0xffffffffffffffff

.set	macro
.set	reorder
.end	wav_write_header
.section	.text.wav_read_header,"ax",@progbits
.align	2
.align	5
.ent	wav_read_header
.type	wav_read_header, @function
wav_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	$17,28($sp)
addiu	$17,$4,16
sw	$18,32($sp)
sw	$31,52($sp)
sw	$22,48($sp)
sw	$21,44($sp)
sw	$20,40($sp)
sw	$19,36($sp)
sw	$16,24($sp)
move	$18,$4
move	$4,$17
jal	get_le32
lw	$19,12($18)

li	$3,1178992640			# 0x46460000
ori	$3,$3,0x4952
beq	$2,$3,$L77
li	$2,-1			# 0xffffffffffffffff

$L74:
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

$L77:
jal	get_le32
move	$4,$17

jal	get_le32
move	$4,$17

li	$3,1163264000			# 0x45560000
ori	$3,$3,0x4157
bne	$2,$3,$L74
li	$2,-1			# 0xffffffffffffffff

li	$2,544473088			# 0x20740000
ori	$21,$2,0x6d66
j	$L60
li	$22,1			# 0x1

$L78:
jal	get_le32
nop

move	$4,$17
jal	get_le32
move	$16,$2

move	$20,$2
beq	$16,$21,$L62
move	$4,$17

move	$6,$2
sra	$7,$2,31
jal	url_fseek
sw	$22,16($sp)

$L60:
jal	url_feof
move	$4,$17

beq	$2,$0,$L78
move	$4,$17

j	$L74
li	$2,-1			# 0xffffffffffffffff

$L62:
bltz	$2,$L79
li	$2,2147418112			# 0x7fff0000

$L65:
move	$4,$18
jal	av_new_stream
move	$5,$0

beq	$2,$0,$L80
move	$16,$2

lw	$5,8($16)
move	$6,$20
jal	get_wav_header
move	$4,$17

lw	$2,8($16)
li	$3,1			# 0x1
lw	$7,64($2)
sw	$3,108($16)
move	$4,$16
li	$5,64			# 0x40
jal	av_set_pts_info
li	$6,1			# 0x1

li	$2,1634992128			# 0x61740000
ori	$18,$2,0x6164
j	$L67
li	$20,1			# 0x1

$L81:
jal	get_le32
nop

move	$16,$2
jal	get_le32
move	$4,$17

beq	$16,$18,$L69
move	$4,$17

move	$6,$2
sra	$7,$2,31
jal	url_fseek
sw	$20,16($sp)

$L67:
jal	url_feof
move	$4,$17

beq	$2,$0,$L81
move	$4,$17

j	$L74
li	$2,-1			# 0xffffffffffffffff

$L69:
bltz	$2,$L71
li	$20,2147418112			# 0x7fff0000

move	$20,$2
sra	$21,$2,31
$L73:
jal	url_ftell
move	$4,$17

addu	$4,$2,$20
sltu	$6,$4,$2
addu	$5,$3,$21
addu	$5,$6,$5
move	$2,$0
sw	$4,8($19)
j	$L74
sw	$5,12($19)

$L80:
j	$L74
li	$2,-12			# 0xfffffffffffffff4

$L79:
j	$L65
ori	$20,$2,0xffff

$L71:
ori	$20,$20,0xffff
j	$L73
move	$21,$0

.set	macro
.set	reorder
.end	wav_read_header
.section	.text.wav_read_packet,"ax",@progbits
.align	2
.align	5
.ent	wav_read_packet
.type	wav_read_packet, @function
wav_read_packet:
.frame	$sp,64,$31		# vars= 0, regs= 9/0, args= 24, gp= 0
.mask	0x80ff0000,-8
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-64
sw	$18,32($sp)
addiu	$18,$4,16
sw	$22,48($sp)
sw	$17,28($sp)
sw	$31,56($sp)
move	$17,$4
sw	$23,52($sp)
sw	$21,44($sp)
sw	$20,40($sp)
sw	$19,36($sp)
sw	$16,24($sp)
move	$4,$18
move	$22,$5
jal	url_feof
lw	$19,12($17)

beq	$2,$0,$L99
move	$4,$18

lw	$31,56($sp)
$L102:
lw	$23,52($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,-5			# 0xfffffffffffffffb
j	$31
addiu	$sp,$sp,64

$L99:
lw	$16,8($19)
jal	url_ftell
lw	$23,100($17)

subu	$17,$16,$2
bgtz	$17,$L85
li	$2,1634992128			# 0x61740000

ori	$20,$2,0x6164
j	$L86
li	$21,1			# 0x1

$L100:
jal	get_le32
nop

move	$4,$18
jal	get_le32
move	$16,$2

move	$17,$2
beq	$16,$20,$L88
move	$4,$18

move	$6,$2
sra	$7,$2,31
jal	url_fseek
sw	$21,16($sp)

$L86:
jal	url_feof
move	$4,$18

beq	$2,$0,$L100
move	$4,$18

j	$L102
lw	$31,56($sp)

$L88:
bltz	$2,$L90
li	$20,2147418112			# 0x7fff0000

move	$20,$2
sra	$21,$2,31
$L92:
jal	url_ftell
move	$4,$18

addu	$4,$2,$20
sltu	$6,$4,$2
addu	$5,$3,$21
addu	$5,$6,$5
sw	$4,8($19)
sw	$5,12($19)
$L85:
lw	$2,8($23)
lw	$4,272($2)
slt	$3,$4,2
bne	$3,$0,$L101
li	$2,4096			# 0x1000

slt	$3,$4,4096
movz	$2,$4,$3
div	$0,$2,$4
teq	$4,$0,7
mflo	$2
mul	$3,$4,$2
$L95:
slt	$2,$17,$3
movz	$17,$3,$2
move	$4,$18
move	$6,$17
jal	av_get_packet
move	$5,$22

blez	$2,$L102
lw	$31,56($sp)

sw	$2,20($22)
sw	$0,24($22)
lw	$31,56($sp)
lw	$23,52($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,64

$L101:
j	$L95
li	$3,4096			# 0x1000

$L90:
li	$2,2147418112			# 0x7fff0000
ori	$17,$2,0xffff
ori	$20,$20,0xffff
j	$L92
move	$21,$0

.set	macro
.set	reorder
.end	wav_read_packet
.globl	wav_demuxer
.section	.rodata.str1.4
.align	2
$LC6:
.ascii	"wav\000"
.align	2
$LC7:
.ascii	"wav format\000"
.data
.align	2
.type	wav_demuxer, @object
.size	wav_demuxer, 64
wav_demuxer:
.word	$LC6
.word	$LC7
.word	40
.word	wav_probe
.word	wav_read_header
.word	wav_read_packet
.word	wav_read_close
.word	wav_read_seek
.space	4
.word	256
.space	16
.word	__compound_literal.0
.space	4
.globl	wav_muxer
.section	.rodata.str1.4
.align	2
$LC8:
.ascii	"audio/x-wav\000"
.data
.align	2
.type	wav_muxer, @object
.size	wav_muxer, 64
wav_muxer:
.word	$LC6
.word	$LC7
.word	$LC8
.word	$LC6
.word	40
.word	65536
.word	0
.word	wav_write_header
.word	wav_write_packet
.word	wav_write_trailer
.space	12
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