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  → /programs/fs/kfar/trunk/kfar_arc/archiver_deflate.txt @ 1149

  → /programs/fs/kfar/trunk/kfar_arc/archiver_deflate.txt @ 6673

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Regard whitespace Rev 1149 → Rev 6673

/programs/fs/kfar/trunk/kfar_arc/archiver_deflate.txt
1,4 → 1,7
archiver.obj ýêñïîðòèðóåò äâå ôóíêöèè äëÿ ðàñïàêîâêè deflate-äàííûõ.
À òàêæå ôóíêöèè: deflateInit, deflateInit2, deflateReset, deflate,
deflateEnd äëÿ óïàêîâêè deflate-äàííûõ, ñäåëàííûå íà îñíîâå ñâîáîäíî
ðàñïðîñòðàíÿåìîé áèáëèîòåêè zlib.
Ïåðâàÿ: deflate_unpack
Îáúÿâëåíèå â ñòèëå Ñè: void* __stdcall deflate_unpack(const void* data, unsigned* pLength);
64,3 → 67,17
mov [ecx], length
mov eax, buffer
ret 8
Àëãîðèòì äëÿ óïàêîâêè äàííûõ:
1) Âûçîâ ôóíêöèè deflateInit èëè deflateInit2.
2) Ðàçáèåíèå âõîäíîãî ïîòîêà äàííûõ íà ïîðöèè ïî 64 Êá.
Äëÿ êàæäîãî áëîêà â 64 Êá â öèêëå äîëæåí äåëàòüñÿ âûçîâ ôóíêöèè deflate.
Çà îäèí âûçîâ ôóíêöèè deflate ñæàòûõ äàííûõ îáðàçóåòñÿ íå áîëåå 16 Êá.
Ò. å. åñëè ñæèìàåìûõ äàííûõ ìåíåå 16 Êá, òî èõ ìîæíî óïàêîâàòü çà îäèí âûçîâ deflate.
Åñëè ñæèìàåìûõ äàííûõ ìåíåå 64 Êá, òî èõ ìîæíî óïàêîâàòü îðãàíèçîâàâ îäèí öèêë ñ âûçîâîì deflate.
Åñëè ñæèìàåìûõ äàííûõ áîëåå 64 Êá, òî èõ ìîæíî óïàêîâàòü îðãàíèçîâàâ äâîéíîé öèêë ñ âûçîâîì deflate.
3) Âûçîâ ôóíêöèè deflateEnd äëÿ î÷èñòêè ïàìÿòè.
Çàìå÷àíèÿ:
Áîëüøèå óðîâíè ñæàòèÿ ïîêà ÷òî íå ïîääåðæèâàþòñÿ.
Ôóíêöèÿ deflate íå êîðåêòíî ðàáîòàåò ñ ïàðàìåòðîì Z_NO_FLUSH.
(Ïîêà ïðîáëåìà íå óñòðàíåíà ðåêîìåíäóåòñÿ âñåãäà ñòàâèòü Z_FINISH)