Jimmie He於 2013年4月30日星期二UTC+8上午1時20分49秒寫道：
> I'm trying to read in the BMP data by the the code below,and I'm check the
> data array with WINHEX,and it is correct,but which confuse me is why the size
> is 0x180,but the actual picture should be 48*48 = 0x120 bytes because I use
> 1-bit BMP not the 24bit BMP,could any one give some hints?
>
>
>
>
>
> --------------------------------------------------------------------------------
>
> __Head_Info = [
>
> [ 'Type' ,0 , 2],#BM
>
> [ 'FSize' ,2 , 4],#File Size
>
> [ 'Reserved' ,6 , 4],#0x00000000
>
> [ 'OffBits' ,10 , 4],#Offset of Image
>
> [ 'SSize' ,14 , 4],# 40
>
> [ 'Width' ,18 , 4],#Width
>
> [ 'Height' ,22 , 4],#Hight
>
> [ 'Planes' ,26 , 2],#1
>
> [ 'BitCount' ,28 , 2],#{1,2,4,8,24}
>
> [ 'Compress' ,30 , 4],#0
>
> [ 'SizeImage' ,34 , 4],#Bytes Per Line
>
> [ 'XPM' ,38 , 4],#2835
>
> [ 'YPM' ,42 , 4],#2835
>
> [ 'ClrUsed' ,46 , 4],#0
>
> [ 'ClrImportant' ,50 , 4]#0
>
> ]
>
> _Type =0;
>
> _FSize =1;
>
> _Reserved =2;
>
> _OffBits =3;
>
> _SSize =4;
>
> _Width =5;
>
> _Height =6;
>
> _Planes =7;
>
> _BitCount =8;
>
> _Compress =9;
>
> _SizeImage =10;
>
> _XPM =11;
>
> _YPM =12;
>
> _ClrUsed =13;
>
> _ClrImportant =14;
>
>
>
> def __getInt( b, idx):
>
> return binToInt(b,__Head_Info[idx][1],__Head_Info[idx][2])
>
>
>
> def saveMatrixtoASC(bmpfilename,ascfilename):
>
> try:
>
> handle1=open( bmpfilename ,"rb")
>
> raw = bytearray(handle1.read( ))
>
> handle1.close
>
> except Exception as E:
>
> return "error:"+ str(E),""
>
>
>
> datastart=__getInt(raw, _OffBits)
>
> datasize =__getInt(raw, _SizeImage)
>
> print ('Image Offset = 0x%X'%datastart)
>
> print ('Image Size = 0x%X'%datasize)
>
> handle2=open( ascfilename ,"w")
>
> for i in range(0,datasize):
>
> handle2.write('0x%02X,'%raw[datastart+i])
>
> if (i+1) % 16 == 0 :
>
> handle2.write("\n")
>
> handle2.close
The start of each line of bytes must be in the 32 bit=4byte
boundary in the MS BMP format.
Please read the MS specs.
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