106 lines
3.6 KiB
Python
106 lines
3.6 KiB
Python
# GNU MediaGoblin -- federated, autonomous media hosting
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# Copyright (C) 2013 MediaGoblin contributors. See AUTHORS.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import tempfile
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import shutil
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import os
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import pytest
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from contextlib import contextmanager
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import logging
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import imghdr
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#os.environ['GST_DEBUG'] = '4,python:4'
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pytest.importorskip("gi.repository.Gst")
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pytest.importorskip("scikits.audiolab")
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import gi
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gi.require_version('Gst', '1.0')
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from gi.repository import Gst
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Gst.init(None)
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from mediagoblin.media_types.audio.transcoders import (AudioTranscoder,
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AudioThumbnailer)
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from mediagoblin.media_types.tools import discover
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@contextmanager
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def create_audio():
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audio = tempfile.NamedTemporaryFile()
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src = Gst.ElementFactory.make('audiotestsrc', None)
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src.set_property('num-buffers', 50)
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enc = Gst.ElementFactory.make('flacenc', None)
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dst = Gst.ElementFactory.make('filesink', None)
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dst.set_property('location', audio.name)
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pipeline = Gst.Pipeline()
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pipeline.add(src)
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pipeline.add(enc)
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pipeline.add(dst)
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src.link(enc)
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enc.link(dst)
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pipeline.set_state(Gst.State.PLAYING)
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state = pipeline.get_state(3 * Gst.SECOND)
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assert state[0] == Gst.StateChangeReturn.SUCCESS
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bus = pipeline.get_bus()
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bus.timed_pop_filtered(
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3 * Gst.SECOND,
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Gst.MessageType.ERROR | Gst.MessageType.EOS)
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pipeline.set_state(Gst.State.NULL)
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yield (audio.name)
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@contextmanager
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def create_data_for_test():
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with create_audio() as audio_name:
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second_file = tempfile.NamedTemporaryFile()
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yield (audio_name, second_file.name)
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def test_transcoder():
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'''
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Tests AudioTransocder's transcode method
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'''
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transcoder = AudioTranscoder()
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with create_data_for_test() as (audio_name, result_name):
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transcoder.transcode(audio_name, result_name, quality=0.3,
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progress_callback=None)
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info = discover(result_name)
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assert len(info.get_audio_streams()) == 1
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transcoder.transcode(audio_name, result_name, quality=0.3,
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mux_name='oggmux', progress_callback=None)
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info = discover(result_name)
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assert len(info.get_audio_streams()) == 1
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def test_thumbnails():
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'''Test thumbnails generation.
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The code below heavily repeats
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audio.processing.CommonAudioProcessor.create_spectrogram
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1. Create test audio
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2. Convert it to OGG source for spectogram using transcoder
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3. Create spectogram in jpg
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'''
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thumbnailer = AudioThumbnailer()
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transcoder = AudioTranscoder()
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with create_data_for_test() as (audio_name, new_name):
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transcoder.transcode(audio_name, new_name, mux_name='oggmux')
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thumbnail = tempfile.NamedTemporaryFile(suffix='.jpg')
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# fft_size below is copypasted from config_spec.ini
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thumbnailer.spectrogram(new_name, thumbnail.name, width=100,
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fft_size=4096)
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assert imghdr.what(thumbnail.name) == 'jpeg'
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