/////////////////////////////////////////////////////////////////////////
//
//?bitstream.cpp?--a?part?of?libdecodeqr
//
//?Copyright（C）?2007?NISHI?Takao?
//???????????????????JMA??（Japan?Medical?Association）
//???????????????????NaCl?（Network?Applied?Communication?Laboratory?Ltd.）
//
//?This?is?free?software?with?ABSOLUTELY?NO?WARRANTY.
//?You?can?redistribute?and/or?modify?it?under?the?terms?of?LGPL.
//
//?$Id:?bitstream.cpp?36?2007-02-21?23:22:03Z?zophos?$
//
#include?“bitstream.h“

namespace?Qr{
????BitStream::BitStream（）
????{
????????this->data=NULL;
????????this->byte_size=0;
????????this->bit_size=0;
????????this->_pos=0;
????}
????BitStream::BitStream（void?*srcint?size）
????{
????????this->byte_size=size;
????????this->bit_size=size<<3;
????????this->data=new?unsigned?char[size];
????????memcpy（this->datasrcsize）;
????????this->_pos=0;
????}
????BitStream::~BitStream（）
????{
????????if（this->data）
????????????delete?this->data;
????}

????bool?BitStream::is_eod（）
????{
????????return（this->_pos>=this->bit_size）;
????}
????int?BitStream::position（）
????{
????????return（this->_pos）;
????}
????int?BitStream::seek（int?pos）
????{
????????this->_pos+=pos;
????????if（this->_pos<0）
????????????this->_pos=0;
????????if（this->_pos>this->bit_size）
????????????this->_pos=this->bit_size;
????????
????????return（this->_pos）;
????}
????void?BitStream::rewind（）
????{
????????this->_pos=0;
????}

????unsigned?char?*BitStream::read（int?read_bits）
????{
????????int?byte_size=（read_bits>>3）+（read_bits&0x07?1:0）;
????????unsigned?char?*buf=new?unsigned?char[byte_size];
????????memset（buf0byte_size）;

????????this->read（bufbyte_sizeread_bits）;

????????return（buf）;
????}
????int?BitStream::read（void?*dstint?buf_sizeint?read_bits）
????{
????????memset（dst0buf_size）;

????????if（read_bits>（buf_size<<3））
????????????read_bits=buf_size<<3;

????????int?end_bit=this->_pos+read_bits-1;
????????if（end_bit>=this->bit_size）{
????????????end_bit=this->bit_size-1;
????????????read_bits=this->bit_size-this->_pos;
????????}
????????int?remain_bits=（end_bit+1）&0x07;
????????int?offset=this->_pos>>3;
????????int?read_bytes=（read_bits>>3）+（read_bits&0x07?1:0）;

????????if（read_bytes????????????int?diff=buf_size-read_bytes;
????????????unsigned?char?*tmp=（unsigned?char?*）dst;
????????????tmp+=diff;
????????????dst=tmp;
????????}

????????if（remain_bits）{
????????????unsigned?char?*src=data+offset;
????????????unsigned?char?*tmp=（unsigned?char?*）dst;

????????????int?i=0;
????????????if（read_bytes==（end_bit>>3）-offset+1）{
????????????????tmp++;
????????????????i++;
????????????}
????????????for（;i????????????????*tmp=*src<????????????}
????????????remain_bits=8-remain_bits;
????????????src=data+（end_bit>>3）;
????????????tmp--;
????????????for（i=0;i????????????????*tmp|=*src>>remain_bits;
????????????}
????????}
????????else{
????????????memcpy（dstthis->data+off

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????11162??2007-02-28?08:01??libdecodeqr-0.9.3\doc\ApiReference.ja

?????文件???????4691??2007-02-28?08:01??libdecodeqr-0.9.3\doc\HackingGuide.ja

?????文件??????26436??2007-02-22?07:22??libdecodeqr-0.9.3\doc\LGPL

?????文件???????2418??2007-02-28?08:01??libdecodeqr-0.9.3\doc\README

?????文件??????23484??2006-10-09?15:57??libdecodeqr-0.9.3\img\01-1.jpg

?????文件??????19601??2006-10-09?15:57??libdecodeqr-0.9.3\img\01-2.jpg

?????文件?????126151??2006-10-09?15:57??libdecodeqr-0.9.3\img\01-3.jpg

?????文件?????112411??2006-10-09?15:57??libdecodeqr-0.9.3\img\01-4.jpg

?????文件??????15711??2006-10-09?15:57??libdecodeqr-0.9.3\img\02-1.jpg

?????文件??????19652??2006-10-09?15:57??libdecodeqr-0.9.3\img\02-2.jpg

?????文件?????101669??2006-10-09?15:57??libdecodeqr-0.9.3\img\02-3.jpg

?????文件??????87936??2006-10-09?15:57??libdecodeqr-0.9.3\img\02-4.jpg

?????文件??????16887??2006-10-09?15:57??libdecodeqr-0.9.3\img\03-1.jpg

?????文件??????16601??2006-10-09?15:57??libdecodeqr-0.9.3\img\03-2.jpg

?????文件??????99917??2006-10-09?15:57??libdecodeqr-0.9.3\img\03-3.jpg

?????文件??????98049??2006-10-09?15:57??libdecodeqr-0.9.3\img\03-4.jpg

?????文件??????24455??2006-10-09?15:57??libdecodeqr-0.9.3\img\04-1.jpg

?????文件??????23674??2006-10-09?15:57??libdecodeqr-0.9.3\img\04-2.jpg

?????文件?????120839??2006-10-09?15:57??libdecodeqr-0.9.3\img\04-3.jpg

?????文件?????109542??2006-10-09?15:57??libdecodeqr-0.9.3\img\04-4.jpg

?????文件??????20848??2006-10-09?15:57??libdecodeqr-0.9.3\img\05-1.jpg

?????文件??????18817??2006-10-09?15:57??libdecodeqr-0.9.3\img\05-2.jpg

?????文件?????133870??2006-10-09?15:57??libdecodeqr-0.9.3\img\05-3.jpg

?????文件?????128223??2006-10-09?15:57??libdecodeqr-0.9.3\img\05-4.jpg

?????文件??????21055??2006-10-09?15:57??libdecodeqr-0.9.3\img\06-1.jpg

?????文件??????20833??2006-10-09?15:57??libdecodeqr-0.9.3\img\06-2.jpg

?????文件?????120508??2006-10-09?15:57??libdecodeqr-0.9.3\img\06-3.jpg

?????文件?????114543??2006-10-09?15:57??libdecodeqr-0.9.3\img\06-4.jpg

?????文件?????230456??2006-10-09?15:57??libdecodeqr-0.9.3\img\125.bmp

?????文件??????65766??2009-02-18?15:45??libdecodeqr-0.9.3\img\myinfo.bmp

............此處省略77個文件信息