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homeostasis
gst-kaldi-nnet2-online
Commits
14b1f020
Commit
14b1f020
authored
10 years ago
by
tanel
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added python GUI demo
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2bce4e7f
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README.md
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README.md
demo/gui-demo.py
+137
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demo/gui-demo.py
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139 additions
and
1 deletion
README.md
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2
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1
View file @
14b1f020
...
...
@@ -45,7 +45,8 @@ Test if GStreamer can access the plugin:
Command-line usage is demonstrated in
`demo/`
.
Usage through GSTreamer's Python bindings is demonstrated in the project
Usage through GStreamer's Python bindings is demonstrated
`demo/gui-demo.py`
and in the project
https://github.com/alumae/kaldi-gstreamer-server, in file kaldigstserver/decoder2.py.
...
...
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demo/gui-demo.py
0 → 100755
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14b1f020
#!/usr/bin/env python
#
# Copyright (c) 2013 Tanel Alumae
# Copyright (c) 2008 Carnegie Mellon University.
#
# Inspired by the CMU Sphinx's Pocketsphinx Gstreamer plugin demo (which has BSD license)
#
# Licence: BSD
import
sys
import
os
import
gi
gi
.
require_version
(
'
Gst
'
,
'
1.0
'
)
from
gi.repository
import
GObject
,
Gst
,
Gtk
,
Gdk
GObject
.
threads_init
()
Gdk
.
threads_init
()
Gst
.
init
(
None
)
class
DemoApp
(
object
):
"""
GStreamer/Kaldi Demo Application
"""
def
__init__
(
self
):
"""
Initialize a DemoApp object
"""
self
.
init_gui
()
self
.
init_gst
()
def
init_gui
(
self
):
"""
Initialize the GUI components
"""
self
.
window
=
Gtk
.
Window
()
self
.
window
.
connect
(
"
destroy
"
,
self
.
quit
)
self
.
window
.
set_default_size
(
400
,
200
)
self
.
window
.
set_border_width
(
10
)
vbox
=
Gtk
.
VBox
()
self
.
text
=
Gtk
.
TextView
()
self
.
textbuf
=
self
.
text
.
get_buffer
()
self
.
text
.
set_wrap_mode
(
Gtk
.
WrapMode
.
WORD
)
vbox
.
pack_start
(
self
.
text
,
True
,
True
,
1
)
self
.
button
=
Gtk
.
Button
(
"
Speak
"
)
self
.
button
.
connect
(
'
clicked
'
,
self
.
button_clicked
)
vbox
.
pack_start
(
self
.
button
,
False
,
False
,
5
)
self
.
window
.
add
(
vbox
)
self
.
window
.
show_all
()
def
quit
(
self
,
window
):
Gtk
.
main_quit
()
def
init_gst
(
self
):
"""
Initialize the speech components
"""
self
.
pulsesrc
=
Gst
.
ElementFactory
.
make
(
"
pulsesrc
"
,
"
pulsesrc
"
)
if
self
.
pulsesrc
==
None
:
print
>>
sys
.
stderr
,
"
Error loading pulsesrc GST plugin. You probably need the gstreamer1.0-pulseaudio package
"
sys
.
exit
()
self
.
audioconvert
=
Gst
.
ElementFactory
.
make
(
"
audioconvert
"
,
"
audioconvert
"
)
self
.
audioresample
=
Gst
.
ElementFactory
.
make
(
"
audioresample
"
,
"
audioresample
"
)
self
.
asr
=
Gst
.
ElementFactory
.
make
(
"
kaldinnet2onlinedecoder
"
,
"
asr
"
)
self
.
fakesink
=
Gst
.
ElementFactory
.
make
(
"
fakesink
"
,
"
fakesink
"
)
if
self
.
asr
:
model_file
=
"
final.mdl
"
if
not
os
.
path
.
isfile
(
model_file
):
print
>>
sys
.
stderr
,
"
Models not downloaded? Run prepare-models.sh first!
"
sys
.
exit
(
1
)
self
.
asr
.
set_property
(
"
fst
"
,
"
HCLG.fst
"
)
self
.
asr
.
set_property
(
"
model
"
,
"
final.mdl
"
)
self
.
asr
.
set_property
(
"
word-syms
"
,
"
words.txt
"
)
self
.
asr
.
set_property
(
"
feature-type
"
,
"
mfcc
"
)
self
.
asr
.
set_property
(
"
mfcc-config
"
,
"
conf/mfcc.conf
"
)
self
.
asr
.
set_property
(
"
ivector-extraction-config
"
,
"
conf/ivector_extractor.fixed.conf
"
)
self
.
asr
.
set_property
(
"
max-active
"
,
7000
)
self
.
asr
.
set_property
(
"
beam
"
,
11.0
)
self
.
asr
.
set_property
(
"
lattice-beam
"
,
6.0
)
self
.
asr
.
set_property
(
"
do-endpointing
"
,
True
)
self
.
asr
.
set_property
(
"
endpoint-silence-phones
"
,
"
1:2:3:4:5:6:7:8:9:10
"
)
else
:
print
>>
sys
.
stderr
,
"
Couldn
'
t create the kaldinnet2onlinedecoder element.
"
if
os
.
environ
.
has_key
(
"
GST_PLUGIN_PATH
"
):
print
>>
sys
.
stderr
,
"
Have you compiled the Kaldi GStreamer plugin?
"
else
:
print
>>
sys
.
stderr
,
"
You probably need to set the GST_PLUGIN_PATH envoronment variable
"
print
>>
sys
.
stderr
,
"
Try running: GST_PLUGIN_PATH=../src %s
"
%
sys
.
argv
[
0
]
sys
.
exit
();
# initially silence the decoder
self
.
asr
.
set_property
(
"
silent
"
,
True
)
self
.
pipeline
=
Gst
.
Pipeline
()
for
element
in
[
self
.
pulsesrc
,
self
.
audioconvert
,
self
.
audioresample
,
self
.
asr
,
self
.
fakesink
]:
self
.
pipeline
.
add
(
element
)
self
.
pulsesrc
.
link
(
self
.
audioconvert
)
self
.
audioconvert
.
link
(
self
.
audioresample
)
self
.
audioresample
.
link
(
self
.
asr
)
self
.
asr
.
link
(
self
.
fakesink
)
self
.
asr
.
connect
(
'
partial-result
'
,
self
.
_on_partial_result
)
self
.
asr
.
connect
(
'
final-result
'
,
self
.
_on_final_result
)
self
.
pipeline
.
set_state
(
Gst
.
State
.
PLAYING
)
def
_on_partial_result
(
self
,
asr
,
hyp
):
"""
Delete any previous selection, insert text and select it.
"""
Gdk
.
threads_enter
()
# All this stuff appears as one single action
self
.
textbuf
.
begin_user_action
()
self
.
textbuf
.
delete_selection
(
True
,
self
.
text
.
get_editable
())
self
.
textbuf
.
insert_at_cursor
(
hyp
)
ins
=
self
.
textbuf
.
get_insert
()
iter
=
self
.
textbuf
.
get_iter_at_mark
(
ins
)
iter
.
backward_chars
(
len
(
hyp
))
self
.
textbuf
.
move_mark
(
ins
,
iter
)
self
.
textbuf
.
end_user_action
()
Gdk
.
threads_leave
()
def
_on_final_result
(
self
,
asr
,
hyp
):
Gdk
.
threads_enter
()
"""
Insert the final result.
"""
# All this stuff appears as one single action
self
.
textbuf
.
begin_user_action
()
self
.
textbuf
.
delete_selection
(
True
,
self
.
text
.
get_editable
())
self
.
textbuf
.
insert_at_cursor
(
hyp
)
if
(
len
(
hyp
)
>
0
):
self
.
textbuf
.
insert_at_cursor
(
"
"
)
self
.
textbuf
.
end_user_action
()
Gdk
.
threads_leave
()
def
button_clicked
(
self
,
button
):
"""
Handle button presses.
"""
if
button
.
get_label
()
==
"
Speak
"
:
button
.
set_label
(
"
Stop
"
)
self
.
asr
.
set_property
(
"
silent
"
,
False
)
else
:
button
.
set_label
(
"
Speak
"
)
self
.
asr
.
set_property
(
"
silent
"
,
True
)
if
__name__
==
'
__main__
'
:
app
=
DemoApp
()
Gtk
.
main
()
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