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import os
import os.path
import tempfile
# import threading
import unittest
import mock
from lvc import video
import base
class GetMediaInfoTest(base.Test):
def assertClose(self, output, expected):
diff = output - expected
# abs(diff) < 0.2
self.assertTrue(diff ** 2 < 0.04,
"%s != %s" % (output, expected))
def assertEqualOutput(self, filename, expected):
full_path = os.path.join(self.testdata_dir, filename)
try:
output = video.get_media_info(full_path)
except Exception as e:
raise AssertionError(
'Error parsing %r\nException: %r\nOutput: %s' % (
filename, e, video.get_ffmpeg_output(full_path)))
duration_output = output.pop('duration', None)
duration_expected = expected.pop('duration', None)
if duration_output is not None and duration_expected is not None:
self.assertClose(duration_output, duration_expected)
else:
# put them back in, let assertEqual handle the difference
output['duration'] = duration_output
expected['duration'] = duration_expected
self.assertEqual(output, expected)
def test_mp3_0(self):
self.assertEqualOutput('mp3-0.mp3',
{'container': 'mp3',
'audio_codec': 'mp3',
'title': 'Invisible Walls',
'artist': 'Revolution Void',
'album': 'Increase The Dosage',
'track': '1',
'genre': 'Blues',
'duration': 1.07})
def test_mp3_1(self):
self.assertEqualOutput('mp3-1.mp3',
{'container': 'mp3',
'audio_codec': 'mp3',
'title': 'Race Lieu',
'artist': 'Ckz',
'album': 'The Heart EP',
'track': '2/5',
'duration': 1.07})
def test_mp3_2(self):
self.assertEqualOutput('mp3-2.mp3',
{'container': 'mp3',
'audio_codec': 'mp3',
'artist': 'This American Life',
'genre': 'Podcast',
'title': '#426: Tough Room 2011',
'duration': 1.09})
def test_theora(self):
self.assertEqualOutput('theora.ogv',
{'container': 'ogg',
'video_codec': 'theora',
'audio_codec': 'vorbis',
'width': 400,
'height': 304,
'duration': 5.0})
def test_theora_with_ogg_extension(self):
self.assertEqualOutput('theora_with_ogg_extension.ogg',
{'container': 'ogg',
'video_codec': 'theora',
'width': 320,
'height': 240,
'duration': 0.1})
def test_webm_0(self):
self.assertEqualOutput('webm-0.webm',
{'container': ['matroska', 'webm'],
'video_codec': 'vp8',
'width': 1920,
'height': 912,
'duration': 0.43})
def test_mp4_0(self):
self.assertEqualOutput('mp4-0.mp4',
{'container': ['mov',
'mp4',
'm4a',
'3gp',
'3g2',
'mj2',
'isom',
'mp41'],
'video_codec': 'h264',
'audio_codec': 'aac',
'width': 640,
'height': 480,
'title': 'Africa: Cash for Climate Change?',
'duration': 312.37})
def test_nuls(self):
self.assertEqualOutput('nuls.mp3',
{'container': 'mp3',
'title': 'Invisible'})
@unittest.skip('inconsistent parsing of DRMed files')
def test_drm(self):
self.assertEqualOutput('drm.m4v',
{'container': ['mov',
'mp4',
'm4a',
'3gp',
'3g2',
'mj2',
'M4V',
'M4V ',
'mp42',
'isom'],
'video_codec': 'none',
'audio_codec': 'aac',
'has_drm': ['audio', 'video'],
'width': 640,
'height': 480,
'title': 'Thinkers',
'artist': 'The Most Extreme',
'album': 'The Most Extreme',
'track': '10',
'genre': 'Nonfiction',
'duration': 2668.8})
class GetThumbnailTest(base.Test):
def setUp(self):
base.Test.setUp(self)
self.video_path = os.path.join(self.testdata_dir,
'theora.ogv')
self.temp_path = tempfile.NamedTemporaryFile(
suffix='.png')
def generate_thumbnail(self, width, height):
completion = mock.Mock()
with mock.patch('lvc.video.idle_add') as mock_idle_add:
with mock.patch('threading.Thread') as mock_thread:
video.get_thumbnail(self.video_path, width, height,
self.temp_path.name, completion,
skip=0)
# get_thumbnail() creates a thread to create the thumbnail.
# Run the function for that thread now.
mock_thread.call_args[1]['target']()
self.assertEquals(mock_idle_add.call_count, 1)
# At the end of the thread it uses add_idle() to call the
# completion function. Run that now.
mock_idle_add.call_args[0][0]()
# Now when we call get_thumbnail() it should return
# immediately with the thumbnail
path = completion.call_args[0][0]
self.assertNotEquals(path, None)
return video.VideoFile(path)
def test_original_size(self):
thumbnail = self.generate_thumbnail(-1, -1)
self.assertEqual(thumbnail.width, 400)
self.assertEqual(thumbnail.height, 304)
def test_height_resize(self):
thumbnail = self.generate_thumbnail(200, -1)
self.assertEqual(thumbnail.width, 200)
self.assertEqual(thumbnail.height, 152)
def test_width_resize(self):
thumbnail = self.generate_thumbnail(-1, 152)
self.assertEqual(thumbnail.width, 200)
self.assertEqual(thumbnail.height, 152)
def test_both_resize(self):
thumbnail = self.generate_thumbnail(100, 100)
self.assertEqual(thumbnail.width, 100)
self.assertEqual(thumbnail.height, 100)
class VideoFileTest(base.Test):
def setUp(self):
base.Test.setUp(self)
self.video_path = os.path.join(self.testdata_dir,
'theora.ogv')
self.video = video.VideoFile(self.video_path)
self.video.thumbnails = {}
def get_thumbnail_from_video(self, **kwargs):
"""Run Video.get_thumbnail()
This method uses mock to intercept the threading and idle_add calls and
just runs the code in the current thread
"""
completion = mock.Mock()
with mock.patch('lvc.video.idle_add') as mock_idle_add:
with mock.patch('threading.Thread') as mock_thread:
initial_rv = self.video.get_thumbnail(completion, **kwargs)
if initial_rv is not None:
# we already had a thumbnail and didn't have to do
# anything synchrously
return video.VideoFile(initial_rv)
# We don't already have a thumbnail, so get_thumbnail()
# created a thread to create it. Run the function for that
# thread.
mock_thread.call_args[1]['target']()
self.assertEquals(mock_idle_add.call_count, 1)
# At the end of the thread it uses add_idle() to call the
# completion function. Run that now.
mock_idle_add.call_args[0][0]()
# Now when we call get_thumbnail() it should return
# immediately with the thumbnail
path = self.video.get_thumbnail(completion, **kwargs)
self.assertNotEquals(path, None)
return video.VideoFile(path)
def test_get_thumbnail_original_size(self):
thumbnail = self.get_thumbnail_from_video()
self.assertEqual(thumbnail.width, 400)
self.assertEqual(thumbnail.height, 304)
def test_get_thumbnail_scaled_width(self):
thumbnail = self.get_thumbnail_from_video(width=200)
self.assertEqual(thumbnail.width, 200)
self.assertEqual(thumbnail.height, 152)
def test_get_thumbnail_scaled_height(self):
thumbnail = self.get_thumbnail_from_video(height=152)
self.assertEqual(thumbnail.width, 200)
self.assertEqual(thumbnail.height, 152)
def test_get_thumbnail_scaled_both(self):
thumbnail = self.get_thumbnail_from_video(width=100, height=100)
self.assertEqual(thumbnail.width, 100)
self.assertEqual(thumbnail.height, 100)
def test_get_thumbnail_cache(self):
thumbnail = self.get_thumbnail_from_video()
thumbnail2 = self.get_thumbnail_from_video()
self.assertEqual(thumbnail.filename,
thumbnail2.filename)
def test_get_thumbnail_audio(self):
audio_path = os.path.join(self.testdata_dir, 'mp3-0.mp3')
audio = video.VideoFile(audio_path)
def complete():
pass
self.assertEqual(audio.get_thumbnail(complete), None)
self.assertEqual(audio.get_thumbnail(complete, 90, 70), None)
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