def testConstructor(self):
Gst.init(None)
a = Gst.ValueList((1, 2, 3))
self.assertEqual(a.array, [1, 2, 3])
self.assertRaises(TypeError, Gst.ValueList, 1)
self.assertRaises(TypeError, Gst.ValueList)
def testGetValue(self):
Gst.init(None)
st = Gst.Structure.new_empty("video/x-raw")
st["framerate"] = Gst.ValueList(
[Gst.Fraction(1, 30), Gst.Fraction(1, 2)])
value = st["framerate"]
self.assertEqual(value[0], Gst.Fraction(1, 30))
self.assertEqual(value[1], Gst.Fraction(1, 2))
st["matrix"] = Gst.ValueList(
[Gst.ValueList([0, 1]),
Gst.ValueList([-1, 0])])
value = st["matrix"]
self.assertEqual(value[0][0], 0)
self.assertEqual(value[0][1], 1)
self.assertEqual(value[1][0], -1)
self.assertEqual(value[1][1], 0)
import matplotlib.patheffects as pe
from numpy_ringbuffer import RingBuffer
from matplotlib import pyplot as plt
from matplotlib.backends.backend_agg import FigureCanvasAgg
except ImportError:
Gst.error('audioplot requires numpy, numpy_ringbuffer and matplotlib')
raise
Gst.init(None)
AUDIO_FORMATS = [f.strip() for f in
GstAudio.AUDIO_FORMATS_ALL.strip('{ }').split(',')]
ICAPS = Gst.Caps(Gst.Structure('audio/x-raw',
format=Gst.ValueList(AUDIO_FORMATS),
layout='interleaved',
rate = Gst.IntRange(range(1, GLib.MAXINT)),
channels = Gst.IntRange(range(1, GLib.MAXINT))))
OCAPS = Gst.Caps(Gst.Structure('video/x-raw',
format='ARGB',
width=Gst.IntRange(range(1, GLib.MAXINT)),
height=Gst.IntRange(range(1, GLib.MAXINT)),
framerate=Gst.FractionRange(Gst.Fraction(1, 1),
Gst.Fraction(GLib.MAXINT, 1))))
DEFAULT_WINDOW_DURATION = 1.0
DEFAULT_WIDTH = 640
DEFAULT_HEIGHT = 480
DEFAULT_FRAMERATE_NUM = 25
def testRepr(self):
Gst.init(None)
self.assertEqual(repr(Gst.ValueList([1, 2, 3])),
'<Gst.ValueList {1,2,3}>')
gi.require_version('GstBase', '1.0')
gi.require_version('GstVideo', '1.0')
from gi.repository import Gst, GObject, GLib, GstBase, GstVideo # noqa:F401,F402
from gstreamer.utils import gst_buffer_with_caps_to_ndarray # noqa:F401,F402
# formats taken from existing videoconvert plugins
# gst-inspect-1.0 videoconvert
FORMATS = [f.strip()
for f in "RGBx,xRGB,BGRx,xBGR,RGBA,ARGB,BGRA,ABGR,RGB,BGR,RGB16,RGB15,GRAY8,GRAY16_LE,GRAY16_BE".split(',')]
# Input caps
IN_CAPS = Gst.Caps(Gst.Structure('video/x-raw',
format=Gst.ValueList(FORMATS),
width=Gst.IntRange(range(1, GLib.MAXINT)),
height=Gst.IntRange(range(1, GLib.MAXINT))))
# Output caps
OUT_CAPS = Gst.Caps(Gst.Structure('video/x-raw',
format=Gst.ValueList(FORMATS),
width=Gst.IntRange(range(1, GLib.MAXINT)),
height=Gst.IntRange(range(1, GLib.MAXINT))))
def clip(value, min_value, max_value):
"""Clip value to range [min_value, max_value]"""
return min(max(value, min_value), max_value)
