Congegni/sintonia
7
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

ReplayGain analysis in airtime_analyzer using python-rgain

Browse source 
* Implemented Replaygain analysis for Ogg Vorbis, MP3, MP4, and FLAC
  using python-rgain
* Added unit tests for ReplayGainAnalyzer
* Squashed stderr output in ReplayGainAnalyzer and CuePointAnalyzer
* Clean up
This commit is contained in:
Albert Santoni 2014-12-11 14:12:41 -05:00
parent 38bd45b8dc
commit 4dd2768755
7 changed files with 89 additions and 36 deletions
Download patch file Download diff file Expand all files Collapse all files

71
python_apps/airtime_analyzer/tests/replaygain_analyzer_tests.py Normal file
View file

@ -0,0 +1,71 @@
from nose.tools import *
from airtime_analyzer.replaygain_analyzer import ReplayGainAnalyzer
def check_default_metadata(metadata):
''' Check that the values extract by Silan/CuePointAnalyzer on our test audio files match what we expect.
:param metadata: a metadata dictionary
:return: Nothing
'''
'''
# We give python-rgain some leeway here by specifying a tolerance. It's not perfectly consistent across codecs...
assert abs(metadata['cuein']) < tolerance_seconds
assert abs(metadata['cueout'] - length_seconds) < tolerance_seconds
'''
tolerance = 0.30
expected_replaygain = 5.0
print metadata['replaygain']
assert abs(metadata['replaygain'] - expected_replaygain) < tolerance
def test_missing_replaygain():
old_rg = ReplayGainAnalyzer.REPLAYGAIN_EXECUTABLE
ReplayGainAnalyzer.REPLAYGAIN_EXECUTABLE = 'foosdaf'
metadata = ReplayGainAnalyzer.analyze(u'tests/test_data/44100Hz-16bit-stereo-utf8.mp3', dict())
ReplayGainAnalyzer.REPLAYGAIN_EXECUTABLE = old_rg # Need to put this back
def test_invalid_filepath():
metadata = ReplayGainAnalyzer.analyze(u'non-existent-file', dict())
def test_mp3_utf8():
metadata = ReplayGainAnalyzer.analyze(u'tests/test_data/44100Hz-16bit-stereo-utf8.mp3', dict())
check_default_metadata(metadata)
def test_mp3_dualmono():
metadata = ReplayGainAnalyzer.analyze(u'tests/test_data/44100Hz-16bit-dualmono.mp3', dict())
check_default_metadata(metadata)
def test_mp3_jointstereo():
metadata = ReplayGainAnalyzer.analyze(u'tests/test_data/44100Hz-16bit-jointstereo.mp3', dict())
check_default_metadata(metadata)
def test_mp3_simplestereo():
metadata = ReplayGainAnalyzer.analyze(u'tests/test_data/44100Hz-16bit-simplestereo.mp3', dict())
check_default_metadata(metadata)
def test_mp3_stereo():
metadata = ReplayGainAnalyzer.analyze(u'tests/test_data/44100Hz-16bit-stereo.mp3', dict())
check_default_metadata(metadata)
def test_mp3_mono():
metadata = ReplayGainAnalyzer.analyze(u'tests/test_data/44100Hz-16bit-mono.mp3', dict())
check_default_metadata(metadata)
def test_ogg_stereo():
metadata = ReplayGainAnalyzer.analyze(u'tests/test_data/44100Hz-16bit-stereo.ogg', dict())
check_default_metadata(metadata)
def test_invalid_wma():
metadata = ReplayGainAnalyzer.analyze(u'tests/test_data/44100Hz-16bit-stereo-invalid.wma', dict())
def test_mp3_missing_id3_header():
metadata = ReplayGainAnalyzer.analyze(u'tests/test_data/44100Hz-16bit-mp3-missingid3header.mp3', dict())
def test_m4a_stereo():
metadata = ReplayGainAnalyzer.analyze(u'tests/test_data/44100Hz-16bit-stereo.m4a', dict())
check_default_metadata(metadata)
''' WAVE is not supported by python-rgain yet
def test_wav_stereo():
metadata = ReplayGainAnalyzer.analyze(u'tests/test_data/44100Hz-16bit-stereo.wav', dict())
check_default_metadata(metadata)
'''