[SCM] morituri/master: * morituri/image/image.py: * morituri/test/test_image_image.py: Add a task for calculating frame length of an audio file. Add a test for it.
js at users.alioth.debian.org
js at users.alioth.debian.org
Sun Oct 19 20:08:45 UTC 2014
The following commit has been merged in the master branch:
commit 27fd2f16e6e777de85ec081abbe78c6ddaae72ab
Author: Thomas Vander Stichele <thomas (at) apestaart (dot) org>
Date: Sun Apr 12 10:20:14 2009 +0000
* morituri/image/image.py:
* morituri/test/test_image_image.py:
Add a task for calculating frame length of an audio file.
Add a test for it.
diff --git a/ChangeLog b/ChangeLog
index dce906b..e1c94a5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
2009-04-12 Thomas Vander Stichele <thomas at apestaart dot org>
+ * morituri/image/image.py:
+ * morituri/test/test_image_image.py:
+ Add a task for calculating frame length of an audio file.
+ Add a test for it.
+
+2009-04-12 Thomas Vander Stichele <thomas at apestaart dot org>
+
* morituri/common/task.py:
Schedule the start from the main loop, otherwise the
task might complete before we're in the main loop,
diff --git a/morituri/image/image.py b/morituri/image/image.py
index 05641ad..6a6ce73 100644
--- a/morituri/image/image.py
+++ b/morituri/image/image.py
@@ -26,6 +26,8 @@ Wrap on-disk CD images based on the .cue file.
import os
+import gst
+
from morituri.common import task, crc
from morituri.image import cue
@@ -120,3 +122,45 @@ class AudioRipCRCTask(task.Task):
# pick another
self.start(self.runner)
+
+class AudioLengthTask(task.Task):
+ """
+ I calculate the length of a track in audio frames.
+
+ @ivar length: length of the decoded audio file, in audio frames.
+ """
+
+ length = None
+
+ def __init__(self, path):
+ self._path = path
+
+ def debug(self, *args, **kwargs):
+ return
+ print args, kwargs
+
+ def start(self, runner):
+ task.Task.start(self, runner)
+ self._pipeline = gst.parse_launch('''
+ filesrc location="%s" !
+ decodebin ! audio/x-raw-int !
+ fakesink name=sink''' % self._path)
+ self.debug('pausing')
+ self._pipeline.set_state(gst.STATE_PAUSED)
+ self._pipeline.get_state()
+ self.debug('paused')
+
+ self.debug('query duration')
+ sink = self._pipeline.get_by_name('sink')
+ assert sink, 'Error constructing pipeline'
+
+ length, format = sink.query_duration(gst.FORMAT_DEFAULT)
+ # wavparse 0.10.14 returns in bytes
+ if format == gst.FORMAT_BYTES:
+ self.debug('query returned in BYTES format')
+ length /= 4
+ self.debug('total length', length)
+ self.length = length
+ self._pipeline.set_state(gst.STATE_NULL)
+
+ self.stop()
diff --git a/morituri/test/test_image_image.py b/morituri/test/test_image_image.py
index 112b8b5..37ba006 100644
--- a/morituri/test/test_image_image.py
+++ b/morituri/test/test_image_image.py
@@ -45,4 +45,13 @@ class KingsSeparateTestCase(unittest.TestCase):
self.assertEquals(h(crctask.crcs[2]), '0xd63dc2d2')
self.assertEquals(h(crctask.crcs[3]), '0x7271db39')
+class AudioLengthTestCase(unittest.TestCase):
+ def testLength(self):
+ path = os.path.join(os.path.dirname(__file__), 'track.flac')
+ t = image.AudioLengthTask(path)
+ runner = task.SyncRunner()
+ runner.run(t, verbose=False)
+ self.assertEquals(t.length, 5880)
+
+
--
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