création de la classe BMPHeader
This commit is contained in:
parent
972c1f5c65
commit
0a5c105944
12
code/bmp.py
12
code/bmp.py
|
@ -3,22 +3,26 @@
|
||||||
# TRAITEMENT D'IMAGES #
|
# TRAITEMENT D'IMAGES #
|
||||||
###########################
|
###########################
|
||||||
|
|
||||||
|
# classes
|
||||||
|
from headerClass import *
|
||||||
|
|
||||||
import dep
|
import dep
|
||||||
import sys
|
import sys
|
||||||
|
|
||||||
tmp = ""
|
tmp = ""
|
||||||
header = ""
|
|
||||||
content = ""
|
content = ""
|
||||||
|
|
||||||
|
|
||||||
with open(sys.argv[1]) as f:
|
with open(sys.argv[1]) as f:
|
||||||
for byte in f.read():
|
for byte in f.read():
|
||||||
|
content += byte
|
||||||
tmp += str( hex( ord(byte) ) )[2:] + ","
|
tmp += str( hex( ord(byte) ) )[2:] + ","
|
||||||
|
|
||||||
headerSize = ( 2 + 4 + 2 + 2 + 4 + 4 + 4 + 4 + 2 + 2 + 4 + 4 + 4 + 4 + 4 + 4 )
|
headerSize = 54
|
||||||
header = tmp[:headerSize]
|
|
||||||
|
header = BMPHeader(content[0:headerSize])
|
||||||
content = tmp[headerSize:]
|
content = tmp[headerSize:]
|
||||||
|
|
||||||
print header
|
print header.offset
|
||||||
print
|
print
|
||||||
print content
|
print content
|
|
@ -0,0 +1,27 @@
|
||||||
|
# ~*~ encoding: utf-8 ~*~ #
|
||||||
|
|
||||||
|
class BMPHeader:
|
||||||
|
|
||||||
|
def toInt(self, bytes):
|
||||||
|
intReturn = 0;
|
||||||
|
for i, byte in enumerate(bytes):
|
||||||
|
intReturn += ord(byte) * (256 ** i)
|
||||||
|
return intReturn
|
||||||
|
|
||||||
|
# CONSTRUCTEUR: parse le header au format bin en objet
|
||||||
|
def __init__(self, binHeader):
|
||||||
|
self.signature = self.toInt(binHeader[ 0: 2]) # signature (4D42)
|
||||||
|
self.fileSize = self.toInt(binHeader[ 2: 6]) # taille du fichier bmp (bytes)
|
||||||
|
self.offset = self.toInt(binHeader[10:14]) # début de l'image (bytes)
|
||||||
|
self.infoSize = self.toInt(binHeader[14:18]) # taille du INFO_HEADER
|
||||||
|
self.width = self.toInt(binHeader[18:22]) # longueur de l'image (pixel)
|
||||||
|
self.height = self.toInt(binHeader[22:26]) # hauteur de l'image (pixel)
|
||||||
|
self.plans = self.toInt(binHeader[26:28]) # nombre de plans (default: 1)
|
||||||
|
self.bpp = self.toInt(binHeader[28:30]) # nombre de bits par pixel (1,4,8, 24)
|
||||||
|
self.compType = self.toInt(binHeader[30:34]) # type de compression (0=none, 1=RLE-8, 2=RLE-4)
|
||||||
|
self.size = self.toInt(binHeader[34:38]) # taille de l'image avec padding (bytes)
|
||||||
|
self.horiRes = self.toInt(binHeader[38:42]) # résolution horizontale (pixels)
|
||||||
|
self.vertRes = self.toInt(binHeader[42:46]) # résolution verticale (pixels)
|
||||||
|
self.colorNb = self.toInt(binHeader[46:50]) # nombre de couleurs de l'image (ou 0)
|
||||||
|
self.colorINb = self.toInt(binHeader[50:54]) # nombre d'images importantes (ou 0)
|
||||||
|
self.header = binHeader
|
Binary file not shown.
Loading…
Reference in New Issue