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mergegmov
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Fri, Feb 7, 14:26

mergegmov
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#!/usr/bin/env python
import sys
import os
import string
import getopt
import math
from pNbody import Movie
####################################################################################
def version():
####################################################################################
print 'version 1.0'
sys.exit(0)
####################################################################################
def help_message():
####################################################################################
print '''Usage : mergegmov -o output --nh=nh --nv=nv film1 film2 ...
Options: -h -- this help message
-o -- name of the output
--nh -- number of horizontal images
--nv -- number of vertical images
--help -- this help message
--version -- displays version
'''
sys.exit(0)
####################################################################################
def check_arguments(options,xarguments):
####################################################################################
nh = 1
nv = 1
output = "out.mov"
for a in options[:]:
if a[0] == '-h':
help_message()
if a[0] == '--help':
help_message()
if a[0] == '--version':
version()
if a[0] == '--info':
info = 1
if a[0] == '--nh':
if a[1] == '':
help_message()
else:
nh = a[1]
continue
if a[0] == '--nv':
if a[1] == '':
help_message()
else:
nv = a[1]
continue
if a[0] == '-o':
if a[1] == '':
help_message()
else:
output = a[1]
continue
files = xarguments
return nh, nv, output, files
####################################################################################
#
# MAIN
#
####################################################################################
try:
options, xarguments = getopt.getopt(sys.argv[1:],'o:h', ['info','help','version','nh=','nv='])
except getopt.error:
help_message()
sys.exit(0)
# check arguments
nh, nv, output, films = check_arguments(options,xarguments)
nh = int(nh)
nv = int(nv)
# check the number of films
if nh*nv != len(films):
print "nh and nv do not match the number of films"
sys.exit()
# check that all films exists
for film in films:
if (os.path.exists(film)==0):
print "Error : the file ",film," do no not exist."
sys.exit(0)
# open films
fs = []
n = -1
for film in films:
n = n + 1
fs.append(Movie.Movie(film))
fs[n].open(readall=1)
if n>0:
if (fs[n].npic != fs[0].npic):
print "films have not the same number of frames"
if (fs[n].numByte != fs[0].numByte):
print "films have not the same width"
if (fs[n].numLine != fs[0].numLine):
print "films have not the same height"
npic = fs[0].npic
numByte = nh*fs[0].numByte
numLine = nv*fs[0].numLine
headerlength = 0
idx = []
for j in range(1,nv+1):
for i in range(1,nh+1):
idx.append((i,j))
# loop over the images
fo = Movie.Movie(output)
fo.new(numByte,numLine)
for i in range(0,npic-1):
print i,'/',npic-1
d = []
for j in range(len(fs)):
d.append(fs[j].read_one()) # read one frame in each film
data = ''
for iv in range(nv):
for k in range(fs[0].numLine):
k1 = k*fs[0].numByte
k2 = k1 + fs[0].numByte
for ih in range(nh):
data = data + d[idx.index((ih+1,iv+1))][k1:k2]
fo.write_pic(fs[0].current_time,data)

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