我有以下代码：
import pi
from pi.becore import ScarlettConfig
from recorder import Recorder
from brain import Brain
import os
import json
import tempfile
#import sys
import pygtk
pygtk.require('2.0')
import gtk
import gobject
import pygst
pygst.require('0.10')
gobject.threads_init()
import gst
scarlett_config=ScarlettConfig()
class Listener:
def __init__(self, gobject, gst):
self.failed = 0
# scarlettPi ( mmj2f I added this after attempting the scarlettPi change )
self.recording = tempfile.mktemp(suffix='pi.wav')
self.pipeline = gst.Pipeline("mypipeline")
# alsasrc - we'll use this to connect our ps3 eye and record
gst.debug("Adding alsasrc")
self.source = gst.element_factory_make("alsasrc", "alsasrc")
self.source.set_property("device", scarlett_config.gimmie('audio_input_device'))
self.pipeline.add(self.source)
# add a queue to allow pocketsphinx to recognize more data
gst.debug("Adding encoding queue")
self.qone = gst.element_factory_make("queue", "qone")
self.pipeline.add(self.qone)
# audio convert
gst.debug("Adding encoding audioconvert")
self.recfileconvert = gst.element_factory_make("audioconvert", "recfileconvert")
self.pipeline.add(self.recfileconvert)
# resample the wav
gst.debug("Adding encoding audioresample")
self.resample = gst.element_factory_make("audioresample", "resample")
self.pipeline.add(self.resample)
# Add our tee
gst.debug("Adding tee")
self.rectee = gst.element_factory_make("tee", "rectee")
self.pipeline.add(self.rectee)
# taken from: http://www.jonobacon.org/files/recgui-works.py
# link tee to alsasrc
gst.debug("Linking alsasrc to tee")
self.source.link(self.rectee)
gst.debug("Adding encoding queue")
self.qtwo = gst.element_factory_make("queue", "qtwo")
self.pipeline.add(self.qtwo)
gst.debug("Adding vader element")
self.vader = gst.element_factory_make("vader","vader")
self.vader.set_property("auto-threshold",False)
self.pipeline.add(self.vader)
gst.debug("Adding pocketsphinx element")
self.pocketsphinx = gst.element_factory_make("pocketsphinx","listener")
print "Pocketsphinx: "
print dir( self.pocketsphinx )
self.pocketsphinx.set_property("lm",scarlett_config.gimmie('LM'))
self.pocketsphinx.set_property("dict",scarlett_config.gimmie('DICT'))
self.pocketsphinx.set_property("hmm",scarlett_config.gimmie('HMM'))
gst.debug("Adding fakesink")
self.fakesink = gst.element_factory_make("fakesink", "fakesink")
self.fakesink.set_property("dump", True)
self.pipeline.add(self.fakesink)
# Linking fakesink to tee
# taken from: http://www.jonobacon.org/files/recgui-works.py
gst.debug("Linking fakesink to tee")
self.fakesink.link(self.rectee)
# creating valve now
gst.debug("Adding Valve element")
self.recording_valve = gst.element_factory_make('valve')
self.record_valve.set_property("drop",False)
self.pipeline.add(self.recording_valve)
# another queue
gst.debug("Adding encoding queue")
self.recording_valve_queue = gst.element_factory_make("queue", "recording_valve_queue")
self.pipeline.add(self.recording_valve_queue)
self.recording_valve.link (self.recording_valve_queue)
# adding wavenc element
gst.debug("Adding wavenc")
self.wavenc = gst.element_factory_make("wavenc", "wavenc")
self.pipeline.add(self.wavenc)
# adding filesink element
gst.debug("Adding filesink")
self.filesink = gst.element_factory_make("filesink", "filesink")
self.filesink.set_property("location", self.recording)
self.filesink.set_property("async", False)
self.pipeline.add(self.filesink)
# lets add the static pads now and link them?
# NOTE: Not sure if this is correct at all:
# self.rectee_pad = self.rectee.get_request_pad("src%d")
# print "Obtained request pad %s for audio branch."% self.rectee_pad.get_name()
self.rectee.get_request_pad('src%d').link(self.recording_valve_queue.get_pad('sink'))
self.rectee.get_request_pad('src%d').link(self.qtwo.get_pad('sink'))
# Original code going forward:
listener = self.pipeline.get_by_name('listener')
listener.connect('result', self.__result__)
listener.set_property('configured', True)
print "KEYWORDS WE'RE LOOKING FOR: " + scarlett_config.gimmie('ourkeywords')
......ETC..........
当我尝试运行我的脚本时，我收到了这个错误：
pi@scarlettpi ~/dev/scarlettPi/scripts/pi $ pi
/usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:57: GtkWarning: could not open display
warnings.warn(str(e), _gtk.Warning)
INFO: cmd_ln.c(691): Parsing command line:
gst-pocketsphinx \
-samprate 8000 \
-cmn prior \
-fwdflat no \
-bestpath no \
-maxhmmpf 2000 \
-maxwpf 20
Current configuration:
[NAME] [DEFLT] [VALUE]
-agc none none
-agcthresh 2.0 2.000000e+00
-alpha 0.97 9.700000e-01
-ascale 20.0 2.000000e+01
-aw 1 1
-backtrace no no
-beam 1e-48 1.000000e-48
-bestpath no no
-bestpathlw 9.5 9.500000e+00
-bghist no no
-ceplen 13 13
-cmn current prior
-cmninit 8.0 8.0
-compallsen no no
-debug 0
-dict
-dictcase no no
-dither no no
-doublebw no no
-ds 1 1
-fdict
-feat 1s_c_d_dd 1s_c_d_dd
-featparams
-fillprob 1e-8 1.000000e-08
-frate 100 100
-fsg
-fsgusealtpron yes yes
-fsgusefiller yes yes
-fwdflat yes no
-fwdflatbeam 1e-64 1.000000e-64
-fwdflatefwid 4 4
-fwdflatlw 8.5 8.500000e+00
-fwdflatsfwin 25 25
-fwdflatwbeam 7e-29 7.000000e-29
-fwdtree yes yes
-hmm
-input_endian little little
-jsgf
-kdmaxbbi -1 -1
-kdmaxdepth 0 0
-kdtree
-latsize 5000 5000
-lda
-ldadim 0 0
-lextreedump 0 0
-lifter 0 0
-lm
-lmctl
-lmname default default
-logbase 1.0001 1.000100e+00
-logfn
-logspec no no
-lowerf 133.33334 1.333333e+02
-lpbeam 1e-40 1.000000e-40
-lponlybeam 7e-29 7.000000e-29
-lw 6.5 6.500000e+00
-maxhmmpf -1 2000
-maxnewoov 20 20
-maxwpf -1 20
-mdef
-mean
-mfclogdir
-min_endfr 0 0
-mixw
-mixwfloor 0.0000001 1.000000e-07
-mllr
-mmap yes yes
-ncep 13 13
-nfft 512 512
-nfilt 40 40
-nwpen 1.0 1.000000e+00
-pbeam 1e-48 1.000000e-48
-pip 1.0 1.000000e+00
-pl_beam 1e-10 1.000000e-10
-pl_pbeam 1e-5 1.000000e-05
-pl_window 0 0
-rawlogdir
-remove_dc no no
-round_filters yes yes
-samprate 16000 8.000000e+03
-seed -1 -1
-sendump
-senlogdir
-senmgau
-silprob 0.1 1.000000e-01
-smoothspec no no
-svspec
-tmat
-tmatfloor 0.0001 1.000000e-04
-topn 4 4
-topn_beam 0 0
-toprule
-transform legacy legacy
-unit_area yes yes
-upperf 6855.4976 6.855498e+03
-usewdphones no no
-uw 1.0 1.000000e+00
-var
-varfloor 0.0001 1.000000e-04
-varnorm no no
-verbose no no
-warp_params
-warp_type inverse_linear inverse_linear
-wbeam 7e-29 7.000000e-29
-wip 1e-4 1.000000e-04
-wlen 0.025625 2.562500e-02
Traceback (most recent call last):
File "/usr/local/bin/pi", line 5, in <module>
pkg_resources.run_script('pi==0.1.0', 'pi')
File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 499, in run_script
self.require(requires)[0].run_script(script_name, ns)
File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 1235, in run_script
execfile(script_filename, namespace, namespace)
File "/usr/local/lib/python2.7/dist-packages/pi-0.1.0-py2.7.egg/EGG-INFO/scripts/pi", line 38, in <module>
listener = Listener(gobject, gst)
File "/usr/local/lib/python2.7/dist-packages/pi-0.1.0-py2.7.egg/pi/listener.py", line 103, in __init__
self.pocketsphinx.link(self.rectee)
gst.LinkError: failed to link listener with rectee
我正在尝试执行以下建议，但我不确定我是否正确执行此操作：
https://stackoverflow.com/a/18228933/814221
谁能帮助我从根本上理解我做错了什么？
谢谢！