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https://github.com/correl/dejavu.git
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Completed integration for SHA1 file hashing to avoid duplicates
This commit is contained in:
Will Drevo
parent
27ed19b0f0
commit
254a79cdf5
4 changed files with 46 additions and 42 deletions
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@ -1,4 +1,4 @@
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from dejavu.database import get_database
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from dejavu.database import get_database, Database
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import dejavu.decoder as decoder
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import fingerprint
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import multiprocessing
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@ -39,7 +39,7 @@ class Dejavu(object):
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self.songs = self.db.get_songs()
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self.songhashes_set = set() # to know which ones we've computed before
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for song in self.songs:
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song_hash = song[self.db.FIELD_SHA1]
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song_hash = song[Database.FIELD_FILE_SHA1]
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self.songhashes_set.add(song_hash)
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def fingerprint_directory(self, path, extensions, nprocesses=None):
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@ -154,13 +154,12 @@ class Dejavu(object):
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fingerprint.DEFAULT_WINDOW_SIZE *
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fingerprint.DEFAULT_OVERLAP_RATIO, 5)
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song = {
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Dejavu.SONG_ID: song_id,
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Dejavu.SONG_NAME: songname,
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Dejavu.CONFIDENCE: largest_count,
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Dejavu.OFFSET: int(largest),
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Dejavu.OFFSET_SECS: nseconds
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}
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Dejavu.SONG_ID : song_id,
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Dejavu.SONG_NAME : songname,
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Dejavu.CONFIDENCE : largest_count,
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Dejavu.OFFSET : int(largest),
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Dejavu.OFFSET_SECS : nseconds,
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Database.FIELD_FILE_SHA1 : song.get(Database.FIELD_FILE_SHA1, None),}
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return song
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def recognize(self, recognizer, *options, **kwoptions):
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@ -5,6 +5,12 @@ import abc
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class Database(object):
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__metaclass__ = abc.ABCMeta
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FIELD_FILE_SHA1 = 'file_sha1'
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FIELD_SONG_ID = 'song_id'
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FIELD_SONGNAME = 'song_name'
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FIELD_OFFSET = 'offset'
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FIELD_HASH = 'hash'
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# Name of your Database subclass, this is used in configuration
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# to refer to your class
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type = None
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@ -51,11 +51,6 @@ class SQLDatabase(Database):
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SONGS_TABLENAME = "songs"
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# fields
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FIELD_HASH = "hash"
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FIELD_SONG_ID = "song_id"
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FIELD_OFFSET = "offset"
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FIELD_SHA1 = 'file_sha1'
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FIELD_SONGNAME = "song_name"
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FIELD_FINGERPRINTED = "fingerprinted"
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# creates
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@ -68,10 +63,10 @@ class SQLDatabase(Database):
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UNIQUE KEY `unique_constraint` (%s, %s, %s),
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FOREIGN KEY (%s) REFERENCES %s(%s) ON DELETE CASCADE
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) ENGINE=INNODB;""" % (
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FINGERPRINTS_TABLENAME, FIELD_HASH,
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FIELD_SONG_ID, FIELD_OFFSET, FIELD_HASH,
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FIELD_SONG_ID, FIELD_OFFSET, FIELD_HASH,
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FIELD_SONG_ID, SONGS_TABLENAME, FIELD_SONG_ID
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FINGERPRINTS_TABLENAME, Database.FIELD_HASH,
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Database.FIELD_SONG_ID, Database.FIELD_OFFSET, Database.FIELD_HASH,
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Database.FIELD_SONG_ID, Database.FIELD_OFFSET, Database.FIELD_HASH,
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Database.FIELD_SONG_ID, SONGS_TABLENAME, Database.FIELD_SONG_ID
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)
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CREATE_SONGS_TABLE = """
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@ -79,41 +74,41 @@ class SQLDatabase(Database):
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`%s` mediumint unsigned not null auto_increment,
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`%s` varchar(250) not null,
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`%s` tinyint default 0,
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`%s` binary(10) not null,
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`%s` binary(20) not null,
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PRIMARY KEY (`%s`),
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UNIQUE KEY `%s` (`%s`)
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) ENGINE=INNODB;""" % (
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SONGS_TABLENAME, FIELD_SONG_ID, FIELD_SONGNAME, FIELD_FINGERPRINTED,
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FIELD_SHA1,
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FIELD_SONG_ID, FIELD_SONG_ID, FIELD_SONG_ID,
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SONGS_TABLENAME, Database.FIELD_SONG_ID, Database.FIELD_SONGNAME, FIELD_FINGERPRINTED,
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Database.FIELD_FILE_SHA1,
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Database.FIELD_SONG_ID, Database.FIELD_SONG_ID, Database.FIELD_SONG_ID,
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)
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# inserts (ignores duplicates)
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INSERT_FINGERPRINT = """
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INSERT IGNORE INTO %s (%s, %s, %s) values
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(UNHEX(%%s), %%s, %%s);
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""" % (FINGERPRINTS_TABLENAME, FIELD_HASH, FIELD_SONG_ID, FIELD_OFFSET)
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""" % (FINGERPRINTS_TABLENAME, Database.FIELD_HASH, Database.FIELD_SONG_ID, Database.FIELD_OFFSET)
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INSERT_SONG = "INSERT INTO %s (%s, %s) values (%%s, UNHEX(%%s));" % (
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SONGS_TABLENAME, FIELD_SONGNAME, FIELD_SHA1)
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SONGS_TABLENAME, Database.FIELD_SONGNAME, Database.FIELD_FILE_SHA1)
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# selects
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SELECT = """
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SELECT %s, %s FROM %s WHERE %s = UNHEX(%%s);
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""" % (FIELD_SONG_ID, FIELD_OFFSET, FINGERPRINTS_TABLENAME, FIELD_HASH)
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""" % (Database.FIELD_SONG_ID, Database.FIELD_OFFSET, FINGERPRINTS_TABLENAME, Database.FIELD_HASH)
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SELECT_MULTIPLE = """
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SELECT HEX(%s), %s, %s FROM %s WHERE %s IN (%%s);
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""" % (FIELD_HASH, FIELD_SONG_ID, FIELD_OFFSET,
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FINGERPRINTS_TABLENAME, FIELD_HASH)
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""" % (Database.FIELD_HASH, Database.FIELD_SONG_ID, Database.FIELD_OFFSET,
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FINGERPRINTS_TABLENAME, Database.FIELD_HASH)
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SELECT_ALL = """
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SELECT %s, %s FROM %s;
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""" % (FIELD_SONG_ID, FIELD_OFFSET, FINGERPRINTS_TABLENAME)
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""" % (Database.FIELD_SONG_ID, Database.FIELD_OFFSET, FINGERPRINTS_TABLENAME)
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SELECT_SONG = """
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SELECT %s, HEX(%s) FROM %s WHERE %s = %%s
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""" % (FIELD_SONGNAME, FIELD_SHA1, SONGS_TABLENAME, FIELD_SONG_ID)
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SELECT %s, HEX(%s) as %s FROM %s WHERE %s = %%s;
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""" % (Database.FIELD_SONGNAME, Database.FIELD_FILE_SHA1, Database.FIELD_FILE_SHA1, SONGS_TABLENAME, Database.FIELD_SONG_ID)
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SELECT_NUM_FINGERPRINTS = """
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SELECT COUNT(*) as n FROM %s
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@ -121,11 +116,11 @@ class SQLDatabase(Database):
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SELECT_UNIQUE_SONG_IDS = """
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SELECT COUNT(DISTINCT %s) as n FROM %s WHERE %s = 1;
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""" % (FIELD_SONG_ID, SONGS_TABLENAME, FIELD_FINGERPRINTED)
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""" % (Database.FIELD_SONG_ID, SONGS_TABLENAME, FIELD_FINGERPRINTED)
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SELECT_SONGS = """
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SELECT %s, %s, HEX(%s) FROM %s WHERE %s = 1;
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""" % (FIELD_SONG_ID, FIELD_SONGNAME, FIELD_SHA1,
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SELECT %s, %s, HEX(%s) as %s FROM %s WHERE %s = 1;
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""" % (Database.FIELD_SONG_ID, Database.FIELD_SONGNAME, Database.FIELD_FILE_SHA1, Database.FIELD_FILE_SHA1,
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SONGS_TABLENAME, FIELD_FINGERPRINTED)
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# drops
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@ -135,7 +130,7 @@ class SQLDatabase(Database):
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# update
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UPDATE_SONG_FINGERPRINTED = """
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UPDATE %s SET %s = 1 WHERE %s = %%s
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""" % (SONGS_TABLENAME, FIELD_FINGERPRINTED, FIELD_SONG_ID)
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""" % (SONGS_TABLENAME, FIELD_FINGERPRINTED, Database.FIELD_SONG_ID)
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# delete
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DELETE_UNFINGERPRINTED = """
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@ -6,17 +6,21 @@ from pydub.utils import audioop
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import wavio
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from hashlib import sha1
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def unique_hash(filepath):
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def unique_hash(filepath, blocksize=2**20):
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""" Small function to generate a hash to uniquely generate
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a file. Taken / inspired from git's way via stackoverflow:
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http://stackoverflow.com/questions/552659
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a file. Inspired by MD5 version here:
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http://stackoverflow.com/a/1131255/712997
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Works with large files.
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"""
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filesize_bytes = os.path.getsize(filepath)
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s = sha1()
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s.update(("blob %u\0" % filesize_bytes).encode('ascii'))
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with open(filepath, 'rb') as f:
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s.update(f.read())
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return s.hexdigest()
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with open(filepath , "rb") as f:
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while True:
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buf = f.read(blocksize)
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if not buf:
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break
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s.update(buf)
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return s.hexdigest().upper()
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def find_files(path, extensions):
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