83 lines
2.6 KiB
Python
83 lines
2.6 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import logging
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import os
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import signal
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import subprocess
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from tempfile import mktemp
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from threading import Thread
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import time
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LOG = logging.getLogger(__name__)
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class VideoRecorder(object):
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def __init__(self, width, height, display='0.0', frame_rate=15):
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self.is_launched = False
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self.file_path = mktemp() + '.mp4'
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# avconv -f x11grab -r 15 -s 1920x1080 -i :0.0 -codec libx264 out.mp4
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self._cmd = ['avconv', '-f', 'x11grab', '-r', str(frame_rate),
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'-s', '{}x{}'.format(width, height),
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'-i', ':{}'.format(display),
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'-codec', 'libx264', self.file_path]
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def start(self):
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if self.is_launched:
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LOG.warning('Video recording is running already')
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return
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if not os.environ.get('AVCONV_INSTALLED', False):
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LOG.error("avconv isn't installed. Video recording is skipped")
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return
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fnull = open(os.devnull, 'w')
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LOG.info('Record video via %s', ' '.join(self._cmd))
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self._popen = subprocess.Popen(self._cmd, stdout=fnull, stderr=fnull)
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self.is_launched = True
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def stop(self):
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if not self.is_launched:
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LOG.warning('Video recording is stopped already')
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return
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self._popen.send_signal(signal.SIGINT)
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def terminate_avconv():
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limit = time.time() + 10
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while time.time() < limit:
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time.sleep(0.1)
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if self._popen.poll() is not None:
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return
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os.kill(self._popen.pid, signal.SIGTERM)
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t = Thread(target=terminate_avconv)
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t.start()
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self._popen.communicate()
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t.join()
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self.is_launched = False
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def clear(self):
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if self.is_launched:
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LOG.error("Video recording is running still")
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return
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if not os.path.isfile(self.file_path):
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LOG.warning("%s is absent already", self.file_path)
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return
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os.remove(self.file_path)
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