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gst/: Proper wrapping of GstController

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Original commit message from CVS:
* gst/gst.override:
* gst/gstlibs.override:
Proper wrapping of GstController
* examples/Makefile.am:
* examples/audio-controller.py:
Example to show how to use gst.Controller
This commit is contained in:
Edward Hervey 2005-09-29 15:42:31 +00:00
parent 6e384e2e97
commit fbd17dd797
5 changed files with 83 additions and 1 deletions
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9
ChangeLog
View file

@ -1,3 +1,12 @@
2005-09-29 Edward Hervey <edward@fluendo.com>
* gst/gst.override:
* gst/gstlibs.override:
Proper wrapping of GstController
* examples/Makefile.am:
* examples/audio-controller.py:
Example to show how to use gst.Controller
2005-09-29 Edward Hervey <edward@fluendo.com>
* examples/gstfile.py:

1
examples/Makefile.am
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@ -1,5 +1,6 @@
examplesdir = $(pkgdatadir)/examples
examples_DATA = \
audio-controller.py \
bps.py \
cp.py \
debugslider.py \

36
examples/audio-controller.py Normal file
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@ -0,0 +1,36 @@
#!/usr/bin/env python
# audio-controller.py
# (c) 2005 Edward Hervey <edward at fluendo dot com>
# Test case for the GstController on sinesrc -> alsasink
# Inspired from ensonic's examples/controller/audio-controller.c
import gst
import time
def main():
pipeline = gst.Pipeline("audiocontroller")
src = gst.element_factory_make("sinesrc", "src")
sink = gst.element_factory_make("alsasink", "sink")
pipeline.add_many(src, sink)
src.link(sink)
control = gst.Controller(src, "freq", "volume")
control.set_interpolation_mode("volume", gst.INTERPOLATE_LINEAR)
control.set_interpolation_mode("volume", gst.INTERPOLATE_LINEAR)
control.set("volume", 0, 0.0)
control.set("volume", 2 * gst.SECOND, 1.0)
control.set("volume", 4 * gst.SECOND, 0.0)
control.set("volume", 6 * gst.SECOND, 1.0)
control.set("freq", 0, 440.0)
control.set("freq", 3 * gst.SECOND, 3000.0)
control.set("freq", 6 * gst.SECOND, 880.0)
pipeline.set_state(gst.STATE_PLAYING)
time.sleep(7)
if __name__ == "__main__":
main()

1
gst/gst.override
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@ -274,6 +274,7 @@ init
if (!pygst_value_init())
return;
pygst_miniobject_init();
gst_controller_init(NULL, NULL);
}
%%
modulename gst

37
gst/gstlibs.override
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@ -1,4 +1,4 @@
/* -*- Mode: C; ; c-file-style: "python" -*- */
/* -*- Mode: C; ; c-basic-offset: 4 -*- */
/* gst-python
* Copyright (C) 2005 Edward Hervey
*
@ -66,3 +66,38 @@ _wrap_gst_controller_set (PyGObject *self, PyObject *args)
Py_INCREF (Py_False);
return Py_False;
}
%%
override gst_controller_new_list args
static int
_wrap_gst_controller_new_list(PyGObject *self, PyObject *args)
{
PyGObject *target;
gint len;
GList *list = NULL;
if ((len = PyTuple_Size(args)) < 1) {
PyErr_SetString(PyExc_TypeError, "Controller requires at least a target object");
return -1;
}
target = (PyGObject *) PyTuple_GetItem(args, 0);
if (len > 1)
while (len-- > 1) {
PyObject *temp;
gchar *str;
temp = PyTuple_GetItem(args, len);
str = PyString_AsString(temp);
GST_INFO("prepending %s [%d]", str, len);
list = g_list_prepend(list, PyString_AsString(temp));
}
self->obj = (GObject *) gst_controller_new_list(target->obj, list);
if (!self->obj) {
PyErr_SetString(PyExc_RuntimeError, "could not create GstController object");
return -1;
}
pygobject_register_wrapper((PyObject *) self);
return 0;
}