KolibriOS/kolibrios
12
4
Fork 12
Code Issues 78 Pull Requests 5 Projects Releases Activity
495fef7e41
kolibrios/programs/other/archer/trunk/deflate.inc
Ivan Baravy 55f254a7ee place debug.inc in /programs 
delete all the other debug.inc files
correct some programs to use common debug.inc


git-svn-id: svn://kolibrios.org@3013 a494cfbc-eb01-0410-851d-a64ba20cac60
2012-11-09 09:19:16 +00:00

616 lines
10 KiB
PHP
Raw Blame History

; @RCHER main algorythm
; Written in pure assembler by Ivushkin Andrey aka Willow
macro get_a _type,_size,c1,c2,c3,c4,c5
{
get_#_type:
local .no,.no0,.ex
push edx
and [Flags],not 1
if _type eq Len
cmp eax,c4
jne .no
mov eax,c5
jmp .ex
.no:
end if
sub eax,c1
ja .no0
add eax,c2
jmp .ex
.no0:
add eax,c3
push eax
mov ecx,eax
shr ecx,_size
xor eax,eax
call read_bits
pop edx
and edx,1 shl _size-1
shl edx,cl
movzx ecx,[tblH#_type+ecx*2]
add edx,ecx
add eax,edx
.ex:
or [Flags],1
pop edx
ret
}
; *************************
Deflate:
mov edi,[outp]
.init:
mov [bits],8
lodsb
call setcurb
.blkbegin:
and [lastblk],0
and [Flags],not 1
rbits 0,1
test eax,eax
je .nolast
mov [lastblk],1
.nolast:
rbits 0,2
cmp eax,10b
je .DynHuff
cmp eax,01b
je .static
test eax,eax
jnz .errorID
Msg 30
movzx ecx,[bits]
call read_bits
movzx ecx,word[esi-1]
add esi,3
rep movsb
jmp .check_last
.errorID:
Msg 6
ret
; Static Huffman
.static:
if SHOW_METH eq 1
Msg 20
end if
mov edi,[outp]
or [Flags],1
.next:
rbits 0,7
; stop
cmp eax,0x17
ja .no7
add eax,256
cmp eax,256
jne .noend
.check_last:
mov [outp],edi
cmp [lastblk],1
je .ex
jmp .blkbegin
.noend:
call get_Len
mov ebx,eax
rbits 0,5
call get_Dist
neg eax
push esi
lea esi,[edi+eax]
mov ecx,ebx
rep movsb
pop esi
jmp .next
.no7:
rbits eax,1
cmp eax,0xc8
jb .no9
rbits eax,1
sub eax,0xd0
jmp .no81
.no9:
cmp eax,0xc0
jb .no81
add eax,0x58
jmp .noend
.no81:
sub eax,0x30
stosb
jmp .next
.ex:
ret
; ************* dynamic Huffman ************
.DynHuff:
; dps '##'
if SHOW_METH eq 1
Msg 19
end if
pusha
xor eax,eax
mov ecx,(output-bl_count) / 4
mov edi,bl_count
rep stosd
popa
; max_len=0
and [max_len],0
rbits 0,5
; hlit-257
add eax,257
mov [hlit],ax
rbits 0,5
; hdist-1
inc eax
mov [hdist],al
rbits 0,4
; hclen-4
add eax,4
mov [hclen],al
mov ecx,eax
push edi
mov edi,tmp_clit
; read code lengths for code lengths
.alphloop:
push ecx
rbits 0,3
stosb
pop ecx
loop .alphloop
; sort code lengths for code lengths
push esi
movzx ecx,[hclen]
xor eax,eax
mov edi,tmp_clit
mov esi,tblSort
.sortloop:
lodsb
movzx bx,byte[edi]
mov [sorted_clit+eax*2],bx
inc edi
loop .sortloop
pop esi edi
.generate:
mov ecx,19
mov ebx,calph
mov edx,seql
mov eax,sorted_clit
call Huffc
and [tblCount],0
or [Flags],1
mov edi,Lit_c
mov ebp,sorted_clit
.again:
cmp edi,output+OUTBUF
jb ._ok
Msg 16
jmp .ex
._ok:
mov edx,seql
mov ebx,calph
call get_code
call ExpLen
cmp [hlit],ax
ja .again
if SHOW_CHARS eq 1
mov edi,Lit_c
call Show_codes
end if
mov edi,Dist_c
and [tblCount],0
.again2:
mov ebx,calph
call get_code
call ExpLen
cmp [hdist],al
ja .again2
movzx ecx,[hlit]
mov ebx,Literal
mov edx,seql
mov eax,Lit_c
call Huffc
movzx ecx,[hdist]
mov ebx,Distance
mov edx,seqd
mov eax,Dist_c
call Huffc
push [hlit]
pop [tblLen]
mov ebp,Lit_c
mov edx,seql
mov ebx,Literal
mov edi,[outp]
and [tblCount],0
.again3: ; <------------
call get_code
cmp eax,256
je .check_last
ja .dist
stosb
jmp .again3
.dist:
call get_Len
push eax ebx edx ebp
mov ecx,32
mov ebp,Dist_c
mov edx,seqd
mov ebx,Distance
mov [tblLen],32
call get_code
call get_Dist
push [hlit]
pop [tblLen]
neg eax
pop ebp edx ebx ecx
push esi
lea esi,[edi+eax]
rep movsb
pop esi
jmp .again3
; ******************************************
Huffc:
; EBX - dest array, ECX - length, EDX - br_seq dest, EAX - source array
push esi edi eax ecx
mov edi,bl_count
xor eax,eax
mov ecx,BITS
rep stosw
pop ecx
mov esi,[esp]
mov [tblLen],cx
mov [max_len],ax
; Count the number of codes for each code length
.cnt_loop:
lodsw
cmp [max_len],ax
jae .skip
mov [max_len],ax
.skip:
inc byte[bl_count+eax]
loop .cnt_loop
movzx ecx,[max_len]
xor eax,eax
and [bl_count],al
xor esi,esi ; edx - bits
mov edi,next_code+2
push ebx
; Find the numerical value of the smallest code for each code length
.nc_loop:
movzx bx,byte[bl_count+esi]
add ax,bx
shl ax,1
stosw
inc esi
loop .nc_loop
pop ebx
; clear table
movzx ecx,[tblLen]
xor eax,eax
dec eax
mov edi,ebx
rep stosw
inc eax
movzx ecx,[tblLen]
mov esi,[esp]
mov edi,ebx
; Assign numerical values to all codes
.loop3:
lodsw
test eax,eax
jz .lp
push [next_code+eax*2]
pop word[edi]
inc [next_code+eax*2]
.lp:
add edi,2
loop .loop3
; Clear all codes
xor eax,eax
mov edi,edx
movzx ecx,[max_len]
mov [edi-1],al
; Prepare read bit sequences
.rebiloop:
inc eax
cmp [bl_count+eax],0
jz .sk
stosb
inc byte[edx-1]
.sk:
loop .rebiloop
movzx ecx,byte[edx-1]
dec ecx
jecxz .noreb2
.reb2loop:
mov al,[edx+ecx-1]
sub [edx+ecx],al
loop .reb2loop
.noreb2:
pop eax edi esi
ret
; ******************************************
; get Codes of variable sizes
get_code:
; EDX - br_seq, EBX - source table, EBP - codelength table
push edx edi
xor eax,eax
movzx ecx,byte[edx-1]
mov [codel],ax
.rb3:
push ecx
movzx ecx,byte[edx]
add [codel],cx
call read_bits
movzx ecx,[tblLen]
inc ecx
mov edi,ebx
.scas:
repne scasw
jecxz .notfound
push edi ecx
sub edi,ebx
sub edi,2
mov cx,[codel]
cmp cx,[ds:ebp+edi]
jne .notfound2
mov eax,edi
shr eax,1
add esp,12
.pp:
pop edi edx
ret
.notfound2:
pop ecx
pop edi
jmp .scas
.notfound:
pop ecx
inc edx
loop .rb3
Msg 7
jmp .pp
codel dw ?
; ******************************************
ExpLen:
cmp eax,16
jae .noliteral
inc [tblCount]
stosw
jmp .nomatch
.noliteral:
and [Flags],not 1
mov ebx,3
cmp eax,17
jae .code1718
mov ecx,2
xor eax,eax
call read_bits
lea ecx,[eax+ebx]
mov ax,[edi-2]
.cc:
add [tblCount],cx
rep stosw
or [Flags],1
jmp .nomatch
.code1718:
jne .code18
mov ecx,3
.cc2:
xor eax,eax
call read_bits
lea ecx,[eax+ebx]
xor eax,eax
jmp .cc
.code18:
mov ebx,11
mov ecx,7
jmp .cc2
.nomatch:
mov ax,[tblCount]
ret
get_a Len,2,256+8,10,3,285,258
get_a Dist,1,3,4,1
; ******************************************
read_bits: ; eax-dest; ecx-count
push edx ecx
.shift:
if RBLOCK eq 4
ror [cur_byte],1
else
ror byte[cur_byte],1
end if
pushf
test [Flags],1
je .noh1
popf
rcl eax,1
jmp .dec
.noh1:
popf
rcr eax,1
.dec:
dec [bits]
jnz .loop1
.push:
push eax
mov eax,[esi]
call setcurb
pop eax
if RBLOCK eq 1
inc esi
inc [IDATcount]
else
inc esi
inc [IDATcount]
end if
cmp esi,area+INBUF-BSIZE
jbe .ok
pusha
if SHOW_RBLOCK eq 1
Msg 9
end if
mov eax,0
mov ebx,1
call FileSeek
mov [esp+4],esi
popa
.ok:
test [Flags],PNG_MODE
jz .idatok
mov edx,[IDATcount]
cmp edx,[IDATsize]
jbe .idatok
pusha
lodsd
call PngParse.nxt_sec
mov [IDATcount],1
mov [esp+4],esi
mov [esp+20],edx
popa
cmp edx,21
jne .idatok
mov eax,256
pop ecx
jmp .exx
.idatok:
mov [bits],8
.loop1:
loop .shift2
jmp .popc
.shift2:
jmp .shift
.popc:
pop ecx
test [Flags],1
jne .exx
.noh2:
rol eax,cl
.exx:
pop edx
ret
if SHOW_CHARS eq 1
Show_codes:
pusha
movzx ecx,[tblLen]
mov ecx,256
xor eax,eax
.lp2:
mov [braces+1],al
push eax ecx
invoke StrFormat,eax,strbuf,20
invoke WriteConsole,[cons],strbuf,16,param1,NULL
invoke WriteConsole,[cons],braces,6,param1,NULL
mov eax,[esp+4]
movzx eax,word[edi+eax*2]
test eax,eax
jz .skip
invoke WriteConsole,[cons],exist,6,param1,NULL
.skip:
invoke WriteConsole,[cons],braces+6,2,param1,NULL
pop ecx eax
inc eax
loop .lp
jmp .ex
.lp:
jmp .lp2
.ex:
popa
ret
cons dd ?
param1 dd ?
braces db '( ) = ',0xa, 0xd
strbuf rb 20
exist db 'exists'
end if
makeCRC:
pusha
Msg 8
mov edi,CRC32table
add edi,255*4
std
mov ecx,255
mov ebx,0xedb88320
.m1:
mov eax,ecx
push ecx
mov ecx,8
.m2:
shr eax,1
jnc .m3
xor eax,ebx
.m3:
loop .m2
pop ecx
stosd
loop .m1
popa
cld
ret
UCRC:
; in: esi - data to calculate CRC
; ecx - its length
; [_CRC32_] - previous CRC32
; out: [_CRC32_]- partial CRC32 (no pre- & post-conditioning!)
pusha
cmp dword[CRC32table+4],0x77073096
je .tbl_rdy
call makeCRC
.tbl_rdy:
mov eax,[_CRC32_]
not eax
.m1:
movzx ebx,al
shr eax,8
xor bl,[esi]
xor eax,[CRC32table+ebx*4]
inc esi
loop .m1
not eax
mov [_CRC32_],eax
popa
ret
UAdler:
; in: esi - data to calculate CRC
; ecx - its length
; [Adler32] - previous Adler32
; out: [Adler32]- partial Adler32
pusha
mov ebp,65521
movzx ebx,word[Adler32] ; s1-ebx
movzx edi,word[Adler32+2] ; s2-edi
.m1:
movzx eax,byte[esi]
add eax,ebx
xor edx,edx
div ebp
mov ebx,edx
lea eax,[edi+ebx]
xor edx,edx
div ebp
mov edi,edx
inc esi
loop .m1
shl edi,16
add edi,ebx
mov [Adler32],edi
popa
ret
tblSort db 16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15
tblHLen dw 7,11,19,35,67,131
tblHDist dw 3,5,9,17,33,65,129,257,513,1025,2049,4097,8193,16385
Reference in New Issue View Git Blame Copy Permalink