parse_es.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 438 行

.file	1 "parse_es.c"
.section .mdebug.abi32
.previous
.section	.text.read_video_packet,"ax",@progbits
.align	2
.align	5
.globl	read_video_packet
.ent	read_video_packet
.type	read_video_packet, @function
read_video_packet:
.frame	$sp,56,$31		# vars= 8, regs= 6/0, args= 24, gp= 0
.mask	0x801f0000,-4
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-56
sw	$18,40($sp)
sw	$16,32($sp)
sw	$31,52($sp)
sw	$20,48($sp)
sw	$19,44($sp)
sw	$17,36($sp)
lui	$16,%hi(videobuf_len)
lw	$17,%lo(videobuf_len)($16)
li	$8,1048576			# 0x100000
subu	$2,$8,$17
slt	$2,$2,5
beq	$2,$0,$L2
move	$18,$4

move	$4,$0
lw	$31,52($sp)
lw	$20,48($sp)
lw	$19,44($sp)
lw	$18,40($sp)
lw	$17,36($sp)
lw	$16,32($sp)
move	$2,$4
j	$31
addiu	$sp,$sp,56

$L2:
lui	$7,%hi(videobuffer)
lw	$2,%lo(videobuffer)($7)
lui	$19,%hi(next_nal)
addu	$2,$2,$17
sb	$0,0($2)
lw	$3,%lo(videobuf_len)($16)
lw	$2,%lo(videobuffer)($7)
move	$20,$19
addu	$2,$2,$3
sb	$0,1($2)
lw	$5,%lo(videobuf_len)($16)
lw	$2,%lo(videobuffer)($7)
li	$3,1
addu	$2,$2,$5
sb	$3,2($2)
lw	$6,%lo(videobuf_len)($16)
lw	$2,%lo(videobuffer)($7)
lw	$5,%lo(next_nal)($19)
addu	$2,$2,$6
sb	$5,3($2)
lw	$3,%lo(videobuf_len)($16)
lw	$5,%lo(videobuffer)($7)
addiu	$3,$3,4
subu	$6,$8,$3
addu	$5,$3,$5
li	$2,256			# 0x100
addiu	$7,$sp,24
sw	$2,16($sp)
jal	demux_pattern_3
sw	$3,%lo(videobuf_len)($16)

lw	$4,%lo(videobuf_len)($16)
lw	$3,24($sp)
addu	$3,$4,$3
beq	$2,$0,$L5
sw	$3,%lo(videobuf_len)($16)

lw	$5,0($18)
lw	$2,4($18)
addiu	$3,$3,-3
slt	$2,$5,$2
beq	$2,$0,$L7
sw	$3,%lo(videobuf_len)($16)

lw	$2,8($18)
addiu	$3,$5,1
addu	$2,$2,$5
lbu	$2,0($2)
sw	$3,0($18)
$L9:
bltz	$2,$L5
sw	$2,%lo(next_nal)($20)

lw	$2,%lo(videobuf_len)($16)
li	$3,4			# 0x4
subu	$4,$2,$17
lui	$2,%hi(videobuf_code_len)
sw	$3,%lo(videobuf_code_len)($2)
lw	$31,52($sp)
lw	$20,48($sp)
lw	$19,44($sp)
lw	$18,40($sp)
lw	$17,36($sp)
lw	$16,32($sp)
move	$2,$4
j	$31
addiu	$sp,$sp,56

$L7:
jal	ds_fill_buffer
move	$4,$18

bne	$2,$0,$L15
nop

li	$2,-1			# 0xffffffffffffffff
sw	$2,%lo(next_nal)($19)
$L5:
lw	$2,%lo(videobuf_len)($16)
li	$3,-1			# 0xffffffffffffffff
subu	$4,$2,$17
lui	$2,%hi(videobuf_code_len)
sw	$0,%lo(videobuf_code_len)($2)
sw	$3,%lo(next_nal)($20)
lw	$31,52($sp)
lw	$20,48($sp)
lw	$19,44($sp)
lw	$18,40($sp)
lw	$17,36($sp)
lw	$16,32($sp)
move	$2,$4
j	$31
addiu	$sp,$sp,56

$L15:
lw	$2,0($18)
lw	$3,8($18)
addiu	$4,$2,1
addu	$3,$3,$2
lbu	$2,0($3)
j	$L9
sw	$4,0($18)

.set	macro
.set	reorder
.end	read_video_packet
.section	.rodata.str1.4,"aMS",@progbits,1
.align	2
$LC0:
.ascii	"parse_es: could not sync video stream!\012\000"
.section	.text.sync_video_packet,"ax",@progbits
.align	2
.align	5
.globl	sync_video_packet
.ent	sync_video_packet
.type	sync_video_packet, @function
sync_video_packet:
.frame	$sp,48,$31		# vars= 8, regs= 3/0, args= 24, gp= 0
.mask	0x80030000,-8
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-48
sw	$17,36($sp)
sw	$16,32($sp)
sw	$31,40($sp)
lui	$17,%hi(videobuf_code_len)
lw	$2,%lo(videobuf_code_len)($17)
beq	$2,$0,$L33
move	$16,$4

lui	$4,%hi(next_nal)
$L17:
lw	$2,%lo(next_nal)($4)
lw	$31,40($sp)
ori	$3,$2,0x100
lw	$17,36($sp)
lw	$16,32($sp)
move	$2,$3
j	$31
addiu	$sp,$sp,48

$L33:
li	$2,256			# 0x100
move	$5,$0
li	$6,10485760			# 0xa00000
addiu	$7,$sp,24
sw	$2,16($sp)
jal	demux_pattern_3
sw	$0,24($sp)

beq	$2,$0,$L34
lw	$3,24($sp)

lw	$4,0($16)
lw	$2,4($16)
slt	$2,$4,$2
beq	$2,$0,$L23
addiu	$3,$4,1

lw	$2,8($16)
addu	$2,$2,$4
lbu	$2,0($2)
sw	$3,0($16)
$L25:
lui	$4,%hi(next_nal)
bltz	$2,$L21
sw	$2,%lo(next_nal)($4)

li	$2,4			# 0x4
j	$L17
sw	$2,%lo(videobuf_code_len)($17)

$L34:
li	$2,10485760			# 0xa00000
beq	$3,$2,$L35
lui	$6,%hi($LC0)

lui	$4,%hi(next_nal)
$L21:
li	$2,-1			# 0xffffffffffffffff
$L36:
sw	$2,%lo(next_nal)($4)
sw	$0,%lo(videobuf_code_len)($17)
move	$3,$0
lw	$31,40($sp)
lw	$17,36($sp)
lw	$16,32($sp)
move	$2,$3
j	$31
addiu	$sp,$sp,48

$L23:
jal	ds_fill_buffer
move	$4,$16

beq	$2,$0,$L26
lui	$4,%hi(next_nal)

lw	$2,0($16)
lw	$3,8($16)
addiu	$4,$2,1
addu	$3,$3,$2
lbu	$2,0($3)
j	$L25
sw	$4,0($16)

$L26:
li	$2,-1			# 0xffffffffffffffff
j	$L36
sw	$2,%lo(next_nal)($4)

$L35:
li	$4,5			# 0x5
addiu	$6,$6,%lo($LC0)
jal	mp_msg
li	$5,1			# 0x1

j	$L21
lui	$4,%hi(next_nal)

.set	macro
.set	reorder
.end	sync_video_packet
.section	.text.deinit_parse_ex,"ax",@progbits
.align	2
.align	5
.globl	deinit_parse_ex
.ent	deinit_parse_ex
.type	deinit_parse_ex, @function
deinit_parse_ex:
.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	$16,16($sp)
lui	$16,%hi(videobuffer)
lw	$2,%lo(videobuffer)($16)
sw	$31,20($sp)
beq	$2,$0,$L38
move	$4,$2

jal	uc_free
nop

$L38:
sw	$0,%lo(videobuffer)($16)
lw	$31,20($sp)
lw	$16,16($sp)
j	$31
addiu	$sp,$sp,24

.set	macro
.set	reorder
.end	deinit_parse_ex
.section	.text.skip_video_packet,"ax",@progbits
.align	2
.align	5
.globl	skip_video_packet
.ent	skip_video_packet
.type	skip_video_packet, @function
skip_video_packet:
.frame	$sp,48,$31		# vars= 8, regs= 3/0, args= 24, gp= 0
.mask	0x80030000,-8
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-48
sw	$17,36($sp)
li	$2,256			# 0x100
lui	$17,%hi(videobuf_code_len)
move	$5,$0
li	$6,10485760			# 0xa00000
addiu	$7,$sp,24
sw	$16,32($sp)
sw	$31,40($sp)
sw	$2,16($sp)
sw	$0,24($sp)
sw	$0,%lo(videobuf_code_len)($17)
jal	demux_pattern_3
move	$16,$4

bne	$2,$0,$L42
lw	$3,24($sp)

li	$2,10485760			# 0xa00000
beq	$3,$2,$L55
lui	$6,%hi($LC0)

lui	$4,%hi(next_nal)
$L44:
li	$2,-1			# 0xffffffffffffffff
$L56:
sw	$2,%lo(next_nal)($4)
sw	$0,%lo(videobuf_code_len)($17)
move	$3,$0
lw	$31,40($sp)
lw	$17,36($sp)
lw	$16,32($sp)
move	$2,$3
j	$31
addiu	$sp,$sp,48

$L42:
lw	$4,0($16)
lw	$2,4($16)
slt	$2,$4,$2
beq	$2,$0,$L46
addiu	$3,$4,1

lw	$2,8($16)
addu	$2,$2,$4
lbu	$2,0($2)
sw	$3,0($16)
$L48:
lui	$4,%hi(next_nal)
bltz	$2,$L44
sw	$2,%lo(next_nal)($4)

ori	$3,$2,0x100
li	$2,4			# 0x4
sw	$2,%lo(videobuf_code_len)($17)
lw	$31,40($sp)
lw	$17,36($sp)
lw	$16,32($sp)
move	$2,$3
j	$31
addiu	$sp,$sp,48

$L46:
jal	ds_fill_buffer
move	$4,$16

beq	$2,$0,$L49
lui	$4,%hi(next_nal)

lw	$2,0($16)
lw	$3,8($16)
addiu	$4,$2,1
addu	$3,$3,$2
lbu	$2,0($3)
j	$L48
sw	$4,0($16)

$L55:
li	$4,5			# 0x5
addiu	$6,$6,%lo($LC0)
jal	mp_msg
li	$5,1			# 0x1

j	$L44
lui	$4,%hi(next_nal)

$L49:
li	$2,-1			# 0xffffffffffffffff
j	$L56
sw	$2,%lo(next_nal)($4)

.set	macro
.set	reorder
.end	skip_video_packet
.globl	videobuffer
.section	.bss
.align	2
.type	videobuffer, @object
.size	videobuffer, 4
videobuffer:
.space	4
.globl	videobuf_len
.align	2
.type	videobuf_len, @object
.size	videobuf_len, 4
videobuf_len:
.space	4
.globl	next_nal
.data
.align	2
.type	next_nal, @object
.size	next_nal, 4
next_nal:
.word	-1
.globl	videobuf_code_len
.section	.bss
.align	2
.type	videobuf_code_len, @object
.size	videobuf_code_len, 4
videobuf_code_len:
.space	4
.ident	"GCC: (GNU) 4.1.2"