python: Add a Gst.init_python function to be called from plugins

Plugins know that they will be initialized after Gst was initialized
so they can call the initialization function dedicated for the python
bindings

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2675>

diff --git a/subprojects/gst-python/examples/plugins/python/audioplot.py b/subprojects/gst-python/examples/plugins/python/audioplot.py
index cf1032fd4f4170c4e0a1a57afb9f0914eafcacec..8747fee1a1af678c21726f42c6e7acb4b1b0655f 100644 (file)
--- a/subprojects/gst-python/examples/plugins/python/audioplot.py
+++ b/subprojects/gst-python/examples/plugins/python/audioplot.py
@@ -29,7 +29,7 @@ except ImportError:
     raise
 
 
-Gst.init(None)
+Gst.init_python()
 
 AUDIO_FORMATS = [f.strip() for f in
                  GstAudio.AUDIO_FORMATS_ALL.strip('{ }').split(',')]

diff --git a/subprojects/gst-python/examples/plugins/python/exampleTransform.py b/subprojects/gst-python/examples/plugins/python/exampleTransform.py
index ed739048e9e13a86eceb384cad0ba5309cbaeee7..d244acb47802618472a7cb5a01e7845823aa2e37 100755 (executable)
--- a/subprojects/gst-python/examples/plugins/python/exampleTransform.py
+++ b/subprojects/gst-python/examples/plugins/python/exampleTransform.py
@@ -15,7 +15,7 @@ from gi.repository import Gst, GObject, GstBase, GstVideo
 
 import numpy as np
 
-Gst.init(None)
+Gst.init_python()
 FIXED_CAPS = Gst.Caps.from_string('video/x-raw,format=GRAY8,width=[1,2147483647],height=[1,2147483647]')
 
 class ExampleTransform(GstBase.BaseTransform):

diff --git a/subprojects/gst-python/examples/plugins/python/identity.py b/subprojects/gst-python/examples/plugins/python/identity.py
index 0f42efcccdeb5386d109b08d6f6b72cfe71195dd..23baf210e53d903a61e23a9a2f816ef0758bc73c 100644 (file)
--- a/subprojects/gst-python/examples/plugins/python/identity.py
+++ b/subprojects/gst-python/examples/plugins/python/identity.py
@@ -16,7 +16,7 @@ import gi
 gi.require_version('GstBase', '1.0')
 
 from gi.repository import Gst, GObject, GstBase
-Gst.init(None)
+Gst.init_python()
 
 #
 # Simple Identity element created entirely in python

diff --git a/subprojects/gst-python/examples/plugins/python/mixer.py b/subprojects/gst-python/examples/plugins/python/mixer.py
index 5d9aafe45c0097653c393ee4c72d9961a2de0477..846508a8a5defcd56ef446d9699912e9674c97b1 100644 (file)
--- a/subprojects/gst-python/examples/plugins/python/mixer.py
+++ b/subprojects/gst-python/examples/plugins/python/mixer.py
@@ -20,7 +20,7 @@ gi.require_version('GObject', '2.0')
 
 from gi.repository import Gst, GObject, GstBase
 
-Gst.init(None)
+Gst.init_python()
 
 try:
     from PIL import Image

diff --git a/subprojects/gst-python/examples/plugins/python/py_audiotestsrc.py b/subprojects/gst-python/examples/plugins/python/py_audiotestsrc.py
index 5e5ef3bfd9a5c685b6a6009da0d8c8e4f96e940a..3684d67347104b29ebace6d3de983899a4e2f626 100644 (file)
--- a/subprojects/gst-python/examples/plugins/python/py_audiotestsrc.py
+++ b/subprojects/gst-python/examples/plugins/python/py_audiotestsrc.py
@@ -22,6 +22,8 @@ except ImportError:
     Gst.error('py_audiotestsrc requires numpy')
     raise
 
+Gst.init_python()
+
 OCAPS = Gst.Caps.from_string (
         'audio/x-raw, format=F32LE, layout=interleaved, rate=44100, channels=2')
 

diff --git a/subprojects/gst-python/examples/plugins/python/sinkelement.py b/subprojects/gst-python/examples/plugins/python/sinkelement.py
index 94281e428c92b702abc58241ad0e07ca104f09a2..249e9c06faf9da17ddea3941a969b2bfd76bc7a0 100644 (file)
--- a/subprojects/gst-python/examples/plugins/python/sinkelement.py
+++ b/subprojects/gst-python/examples/plugins/python/sinkelement.py
@@ -21,7 +21,7 @@
 #  $ gst-launch-1.0 videotestsrc ! pymysink://
 
 from gi.repository import Gst, GObject, GstBase
-Gst.init(None)
+Gst.init_python()
 
 #
 # Simple Sink element created entirely in python

diff --git a/subprojects/gst-python/gi/overrides/Gst.py b/subprojects/gst-python/gi/overrides/Gst.py
index cef36d6496df110f775bcc22bac6d84389e2e455..902f53192dd991fa83f841ab7673a719f0dc9a62 100644 (file)
--- a/subprojects/gst-python/gi/overrides/Gst.py
+++ b/subprojects/gst-python/gi/overrides/Gst.py
@@ -755,7 +755,14 @@ def deinit():
     deinit_pygst()
     return real_deinit()
 
+def init_python():
+    if not Gst.is_initialized():
+        raise NotInitialized("Gst.init_python should never be called before GStreamer itself is initialized")
+
+    init_pygst()
+
 Gst.deinit = deinit
+Gst.init_python = init_python
 
 if not Gst.is_initialized():
     deinit_pygst()