341 lines
11 KiB
Python
341 lines
11 KiB
Python
# -*- coding: utf-8 -*-
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# vi:si:et:sw=4:sts=4:ts=4
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# GPL 2008
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from __future__ import division, with_statement
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import os
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import hashlib
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import re
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import shutil
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import struct
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import subprocess
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import sqlite3
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from ox.utils import json
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__all__ = ['sha1sum', 'oshash', 'avinfo', 'makedirs']
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EXTENSIONS = {
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'audio': [
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'aac', 'aif', 'aiff',
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'flac', 'm4a', 'mp3', 'oga', 'ogg', 'wav', 'wma'
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],
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'image': [
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'bmp', 'gif', 'jpeg', 'jpg', 'png', 'svg', 'webp'
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],
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'subtitle': [
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'idx', 'srt', 'sub'
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],
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'video': [
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'3gp',
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'avi', 'divx', 'dv', 'flv', 'm2t', 'm4v', 'mkv', 'mov', 'mp4',
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'mpeg', 'mpg', 'mts', 'ogm', 'ogv', 'rm', 'vob', 'webm', 'wmv',
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'mod', 'tod', # http://en.wikipedia.org/wiki/MOD_and_TOD
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'mxf'
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],
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}
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def cmd(program):
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local = os.path.expanduser('~/.ox/bin/%s' % program)
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if os.path.exists(local):
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program = local
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return program
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def _get_file_cache():
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import ox.cache
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path = ox.cache.cache_path()
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if path.startswith('fs:'):
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path = path[3:]
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return os.path.join(path, 'files.sqlite')
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def cache(filename, type='oshash'):
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conn = sqlite3.connect(_get_file_cache(), timeout=10)
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conn.text_factory = str
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conn.row_factory = sqlite3.Row
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if not cache.init:
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c = conn.cursor()
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c.execute('CREATE TABLE IF NOT EXISTS cache (path varchar(1024) unique, oshash varchar(16), sha1 varchar(42), size int, mtime int, info text)')
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c.execute('CREATE INDEX IF NOT EXISTS cache_oshash ON cache (oshash)')
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c.execute('CREATE INDEX IF NOT EXISTS cache_sha1 ON cache (sha1)')
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conn.commit()
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cache.init = True
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c = conn.cursor()
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c.execute('SELECT oshash, sha1, info, size, mtime FROM cache WHERE path = ?', (filename, ))
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stat = os.stat(filename)
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row = None
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h = None
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sha1 = None
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info = ''
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for row in c:
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if stat.st_size == row['size'] and int(stat.st_mtime) == int(row['mtime']):
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value = row[type]
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if value:
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if type == 'info':
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value = json.loads(value)
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return value
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h = row['oshash']
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sha1 = row['sha1']
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info = row['info']
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if type == 'oshash':
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value = h = oshash(filename, cached=False)
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elif type == 'sha1':
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value = sha1 = sha1sum(filename, cached=False)
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elif type == 'info':
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value = avinfo(filename, cached=False)
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info = json.dumps(value)
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t = (filename, h, sha1, stat.st_size, int(stat.st_mtime), info)
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with conn:
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sql = u'INSERT OR REPLACE INTO cache values (?, ?, ?, ?, ?, ?)'
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c.execute(sql, t)
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return value
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cache.init = None
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def cleanup_cache():
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conn = sqlite3.connect(_get_file_cache(), timeout=10)
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conn.text_factory = str
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conn.row_factory = sqlite3.Row
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c = conn.cursor()
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c.execute('SELECT path FROM cache')
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paths = [r[0] for r in c]
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for path in paths:
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if not os.path.exists(path):
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c.execute('DELETE FROM cache WHERE path = ?', (path, ))
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conn.commit()
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c.execute('VACUUM')
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conn.commit()
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def sha1sum(filename, cached=False):
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if cached:
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return cache(filename, 'sha1')
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sha1 = hashlib.sha1()
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with open(filename) as f:
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for chunk in iter(lambda: f.read(128*sha1.block_size), ''):
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sha1.update(chunk)
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return sha1.hexdigest()
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'''
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os hash - http://trac.opensubtitles.org/projects/opensubtitles/wiki/HashSourceCodes
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plus modification for files < 64k, buffer is filled with file data and padded with 0
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'''
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def oshash(filename, cached=True):
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if cached:
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return cache(filename, 'oshash')
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try:
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longlongformat = 'q' # long long
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bytesize = struct.calcsize(longlongformat)
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f = open(filename, "rb")
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filesize = os.path.getsize(filename)
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hash = filesize
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if filesize < 65536:
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for x in range(int(filesize/bytesize)):
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buffer = f.read(bytesize)
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(l_value,)= struct.unpack(longlongformat, buffer)
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hash += l_value
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hash = hash & 0xFFFFFFFFFFFFFFFF #to remain as 64bit number
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else:
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for x in range(int(65536/bytesize)):
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buffer = f.read(bytesize)
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(l_value,)= struct.unpack(longlongformat, buffer)
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hash += l_value
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hash = hash & 0xFFFFFFFFFFFFFFFF #to remain as 64bit number
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f.seek(max(0,filesize-65536),0)
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for x in range(int(65536/bytesize)):
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buffer = f.read(bytesize)
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(l_value,)= struct.unpack(longlongformat, buffer)
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hash += l_value
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hash = hash & 0xFFFFFFFFFFFFFFFF
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f.close()
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returnedhash = "%016x" % hash
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return returnedhash
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except(IOError):
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return "IOError"
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def avinfo(filename, cached=True):
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if cached:
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return cache(filename, 'info')
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if os.path.getsize(filename):
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ffmpeg2theora = cmd('ffmpeg2theora')
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p = subprocess.Popen([ffmpeg2theora], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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info, error = p.communicate()
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version = info.split('\n')[0].split(' - ')[0].split(' ')[-1]
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if version < '0.27':
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raise EnvironmentError('version of ffmpeg2theora needs to be 0.27 or later, found %s' % version)
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p = subprocess.Popen([ffmpeg2theora, '--info', filename],
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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info, error = p.communicate()
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try:
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info = json.loads(info)
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except:
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#remove metadata, can be broken
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reg = re.compile('"metadata": {.*?},', re.DOTALL)
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info = re.sub(reg, '', info)
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info = json.loads(info)
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if 'video' in info:
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for v in info['video']:
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if not 'display_aspect_ratio' in v and 'width' in v:
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v['display_aspect_ratio'] = '%d:%d' % (v['width'], v['height'])
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v['pixel_aspect_ratio'] = '1:1'
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if len(info.get('audio', [])) > 1:
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if 'metadata' in info['audio'][0]:
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for stream in info['audio']:
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language = stream.get('metadata', {}).get('language')
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if language and language != 'und':
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stream['language'] = language[0]
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else:
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ffmpeg = cmd('ffmpeg')
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p = subprocess.Popen([ffmpeg, '-i', filename], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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stdout, stderr = p.communicate()
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languages = [re.compile('\((.+?)\):').findall(l) for l in stderr.split('\n') if 'Stream' in l and 'Audio' in l]
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for i, stream in enumerate(info['audio']):
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language = languages[i]
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if language and language[0] != 'und':
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stream['language'] = language[0]
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return info
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return {'path': filename, 'size': 0}
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def ffprobe(filename):
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p = subprocess.Popen([
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cmd('ffprobe'),
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'-show_format',
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'-show_streams',
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'-print_format',
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'json',
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'-i', filename
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], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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info, error = p.communicate()
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ffinfo = json.loads(info)
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def fix_value(key, value):
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if key == 'r_frame_rate':
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value = value.replace('/', ':')
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elif key == 'bit_rate':
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value = float(value) / 1000
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elif key == 'duration':
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value = float(value)
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elif key == 'size':
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value = int(value)
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return value
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info = {}
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for key in ('duration', 'size', 'bit_rate'):
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info[{
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'bit_rate': 'bitrate'
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}.get(key, key)] = fix_value(key, ffinfo['format'][key])
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info['audio'] = []
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info['video'] = []
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info['metadata'] = ffinfo['format'].get('tags', {})
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for s in ffinfo['streams']:
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tags = s.pop('tags', {})
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language = None
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for t in tags:
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if t == 'language':
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language = tags[t]
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else:
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info['metadata'][t] = tags[t]
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if s.get('codec_type') in ('audio', 'video'):
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stream = {}
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if language and language != 'und':
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stream['language'] = language
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keys = [
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'codec_name',
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'width',
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'height',
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'bit_rate',
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'index',
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'display_aspect_ratio',
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'sample_rate',
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'channels',
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]
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if s['codec_type'] == 'video':
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keys += [
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'sample_aspect_ratio',
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'r_frame_rate',
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'pix_fmt',
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]
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for key in keys:
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if key in s:
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stream[{
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'codec_name': 'codec',
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'bit_rate': 'bitrate',
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'index': 'id',
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'r_frame_rate': 'framerate',
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'sample_rate': 'samplerate',
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'pix_fmt': 'pixel_format',
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}.get(key, key)] = fix_value(key, s[key])
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info[s['codec_type']].append(stream)
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else:
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pass
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#print s
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for v in info['video']:
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if not 'display_aspect_ratio' in v and 'width' in v:
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v['display_aspect_ratio'] = '%d:%d' % (v['width'], v['height'])
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v['pixel_aspect_ratio'] = '1:1'
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info['oshash'] = oshash(filename)
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info['path'] = os.path.basename(filename)
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return info
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def makedirs(path):
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if not os.path.exists(path):
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try:
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os.makedirs(path)
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except OSError, e:
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if e.errno != 17:
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raise
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def copy_file(source, target, verbose=False):
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if verbose:
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print 'copying', source, 'to', target
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write_path(target)
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shutil.copyfile(source, target)
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def read_file(file, verbose=False):
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if verbose:
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print 'reading', file
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f = open(file)
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data = f.read()
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f.close()
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return data
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def read_json(file, verbose=False):
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if verbose:
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print 'reading', file
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with open(file) as fd:
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data = json.load(fd)
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return data
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def write_file(file, data, verbose=False):
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if verbose:
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print 'writing', file
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write_path(file)
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f = open(file, 'w')
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f.write(data)
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f.close()
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return len(data)
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def write_image(file, image, verbose=False):
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if verbose:
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print 'writing', file
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write_path(file)
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image.save(file)
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def write_json(file, data, ensure_ascii=True, indent=0, sort_keys=False, verbose=False):
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data = json.dumps(data, ensure_ascii=ensure_ascii, indent=indent, sort_keys=sort_keys)
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write_file(file, data if ensure_ascii else data.encode('utf-8'), verbose=verbose)
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def write_link(source, target, verbose=False):
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if verbose:
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print 'linking', source, 'to', target
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write_path(target)
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if os.path.exists(target):
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os.unlink(target)
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os.symlink(source, target)
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def write_path(file):
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path = os.path.split(file)[0]
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if path and not os.path.exists(path):
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os.makedirs(path)
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