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importing libqrdecode
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@tenderlove
tenderlove committed Feb 11, 2009
1 parent f8b6669 commit a7c8af4
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Showing 33 changed files with 5,237 additions and 4 deletions.
3 changes: 1 addition & 2 deletions Rakefile
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require 'rubygems'
require 'hoe'
require './lib/qrdecode.rb'

kind = Config::CONFIG['DLEXT']
windows = RUBY_PLATFORM =~ /mswin/i ? true : false

EXT = "ext/qrdecode/qrdecode.#{kind}"

Hoe.new('qrdecode', Qrdecode::VERSION) do |p|
Hoe.new('qrdecode', '1.0.0') do |p|
p.developer('Aaron Patterson', 'aaronp@rubyforge.org')
p.clean_globs = [
'ext/qrdecode/Makefile',
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65 changes: 65 additions & 0 deletions ext/qrdecode/Makefile.in
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#
# Makefile.in -- a part of libdecodeqr
#
# Copyright(C) 2007 NISHI Takao <zophos@koka-in.org>
# 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: Makefile 20 2006-11-20 03:26:52Z zophos $
#
prefix = @prefix@
exec_prefix = @exec_prefix@
libdir = @libdir@
includedir = @includedir@

MAJOR=@MAJOR@
MINOR=@MINOR@
TEENY=@TEENY@

BASENAME=libdecodeqr
LIBNAME_A=$(BASENAME).a
SONAME=$(BASENAME).so.$(MAJOR)
LIBNAME_SO=$(BASENAME).so.$(MAJOR).$(MINOR).$(TEENY)

CXX=@CXX@
CPPFLAGS=@CPPFLAGS@ @CXXFLAGS@ -fPIC -c

AR=@AR@
ARFLAGS=rcs

LD=@LD@
LDFLAGS=@LDFLAGS@ -shared -soname $(SONAME)
LIBCV=@LIBCV@
LIBS=$(LIBCV)

INSTALL=@INSTALL@
LDCONFIG=/sbin/ldconfig
LN=@LN@

.SUFFIXES: .cpp .o
.cpp.o:
$(CXX) $(CPPFLAGS) $<

sources:=$(wildcard *.cpp)
objs:=$(patsubst %.cpp,%.o,$(wildcard *.cpp))
dsts:=$(LIBNAME_A) $(LIBNAME_SO) decodeqr.h

all: $(dsts)

$(LIBNAME_A): $(objs)
$(AR) $(ARFLAGS) $@ $(objs)

$(LIBNAME_SO): $(objs)
$(LD) -o $@ $(objs) $(LDFLAGS) $(LIBS)

install: $(dsts)
$(INSTALL) -m 0755 $(LIBNAME_A) $(LIBNAME_SO) $(libdir)
$(LDCONFIG) -n $(libdir)
$(LN) -sf $(libdir)/$(LIBNAME_SO) $(libdir)/$(BASENAME).so
$(INSTALL) -m 0644 decodeqr.h qrerror.h qrtypes.h $(includedir)

clean:
-rm *.a *.o *.so.*
147 changes: 147 additions & 0 deletions ext/qrdecode/bitstream.cpp
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/////////////////////////////////////////////////////////////////////////
//
// bitstream.cpp --a part of libdecodeqr
//
// Copyright(C) 2007 NISHI Takao <zophos@koka-in.org>
// 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 *src,int size)
{
this->byte_size=size;
this->bit_size=size<<3;
this->data=new unsigned char[size];
memcpy(this->data,src,size);
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(buf,0,byte_size);

this->read(buf,byte_size,read_bits);

return(buf);
}
int BitStream::read(void *dst,int buf_size,int read_bits)
{
memset(dst,0,buf_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<buf_size){
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<read_bytes;i++,src++,tmp++){
*tmp=*src<<remain_bits;
}
remain_bits=8-remain_bits;
src=data+(end_bit>>3);
tmp--;
for(i=0;i<read_bytes;i++,src--,tmp--){
*tmp|=*src>>remain_bits;
}
}
else{
memcpy(dst,this->data+offset,read_bytes);
}

unsigned char mask=0xff;
switch(8-(read_bits&0x07)){
case 1:
mask=0x7f;
break;
case 2:
mask=0x3f;
break;
case 3:
mask=0x1f;
break;
case 4:
mask=0x0f;
break;
case 5:
mask=0x07;
break;
case 6:
mask=0x03;
break;
case 7:
mask=0x01;
break;
}
*((unsigned char *)dst)&=mask;
this->_pos+=read_bits;

return(read_bits);
}

}
48 changes: 48 additions & 0 deletions ext/qrdecode/bitstream.h
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/////////////////////////////////////////////////////////////////////////
//
// bitstream.h --a part of libdecodeqr
//
// Copyright(C) 2007 NISHI Takao <zophos@koka-in.org>
// 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.h 36 2007-02-21 23:22:03Z zophos $
//
#ifndef __QR_BITSTREAM__
#define __QR_BITSTREAM__

#include <memory.h>

#ifndef NULL
#define NULL 0
#endif

namespace Qr{
class BitStream{
public:
unsigned char *data;
int byte_size;
int bit_size;

private:
int _pos;

public:
BitStream();
BitStream(void *src,int size);
~BitStream();

bool is_eod();
int position();
int seek(int pos);
void rewind();

unsigned char *read(int read_bits);
int read(void *dst,int buf_size,int bitsize);
};
};

#endif

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