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audio: Use timed pop for message loop and gst clocks

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This commit is contained in:
Thomas Adamcik 2015-03-13 22:36:35 +01:00
parent 628c828087
commit 9e8b3263ab
1 changed files with 15 additions and 12 deletions
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27
mopidy/audio/scan.py
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@ -1,7 +1,6 @@
from __future__ import absolute_import, division, unicode_literals
import collections
import time
import pygst
pygst.require('0.10')
@ -31,7 +30,7 @@ class Scanner(object):
"""
def __init__(self, timeout=1000, proxy_config=None):
self._timeout_ms = timeout
self._timeout_ms = int(timeout)
self._proxy_config = proxy_config or {}
def scan(self, uri):
@ -52,7 +51,7 @@ class Scanner(object):
try:
_start_pipeline(pipeline)
tags, mime = _process(pipeline, self._timeout_ms / 1000.0)
tags, mime = _process(pipeline, self._timeout_ms)
duration = _query_duration(pipeline)
seekable = _query_seekable(pipeline)
finally:
@ -120,17 +119,19 @@ def _query_seekable(pipeline):
return query.parse_seeking()[1]
def _process(pipeline, timeout):
start = time.time()
tags, mime, missing_description = {}, None, None
def _process(pipeline, timeout_ms):
clock = pipeline.get_clock()
bus = pipeline.get_bus()
timeout = timeout_ms * gst.MSECOND
tags, mime, missing_description = {}, None, None
while time.time() - start < timeout:
if not bus.have_pending():
continue
message = bus.pop()
start = clock.get_time()
while timeout > 0:
message = bus.timed_pop(timeout)
if message.type == gst.MESSAGE_ELEMENT:
if message is None:
break
elif message.type == gst.MESSAGE_ELEMENT:
if gst.pbutils.is_missing_plugin_message(message):
missing_description = encoding.locale_decode(
_missing_plugin_desc(message))
@ -153,4 +154,6 @@ def _process(pipeline, timeout):
# Note that this will only keep the last tag.
tags.update(utils.convert_taglist(taglist))
raise exceptions.ScannerError('Timeout after %dms' % (timeout * 1000))
timeout -= clock.get_time() - start
raise exceptions.ScannerError('Timeout after %dms' % timeout_ms)