Source Code for Module synthDrivers._audiologic

  1  #synthDrivers/_audiologic.py 
  2  #A part of NonVisual Desktop Access (NVDA) 
  3  #This file is covered by the GNU General Public License. 
  4  #See the file COPYING for more details. 
  5  #Copyright (C) 2008-2010 Gianluca Casalino <gianluca@spazioausili.net> 
  6   
  7  from ctypes import * 
  8  import os 
  9   
 10  NvdaDir=os.getcwdu() 
 11  TtsDir="c:\\TTS3\\" 
 12  Handle=c_int() 
 13  Tts=None 
 14  LastIndex=None 
 15   
 16  #Tts parameters constants 
 17  minRate=50 
 18  maxRate=200 
 19  minPitch=-12 
 20  maxPitch=+9 
 21  minVol=-40 
 22  maxVol=+12 
 23   
 24  #SynthStatus and SynthType Constants  
 25  ST_NONE=0 
 26  SYNTH_IDLE=0 
 27  SYNTH_RUNNING=1 
 28  SYNTH_PAUSED=2 
 29   
 30  #callback constants 
 31  M_BOOKMARK=8 
 32   
 33  #others constants 
 34  ttsRate=0 
 35  ttsPitch=1 
 36  ttsVol=2 
 37  ttsExpression=3 
 38   
 39 -class TtsProsody(Structure): 
 40          _fields_=[ 
 41          ('Speed', c_int), 
 42          ('Pitch', c_int), 
 43          ('Vol', c_int), 
 44          ('Expression', c_int), 
 45          ('PhraseSpeed', c_int), 
 46          ('PhrasePitch', c_int), 
 47          ('PhraseGain', c_int), 
 48          ('StressSpeed', c_int), 
 49          ('StreesPitch', c_int), 
 50          ('StreesGain', c_int), 
 51          ('Declination', c_int), 
 52          ('PauseFactor', c_int), 
 53          ('DoubleFactor', c_int), 
 54          ('RandomFactor', c_int)] 
 55   
 56 -class Tts3Status(Structure): 
 57          _fields_=[ 
 58          ('SynthType', c_int), 
 59          ('SynthStatus', c_int), 
 60          ('CurrentTime', c_int), 
 61          ('SynthesisTime', c_int), 
 62          ('Samples', c_int), 
 63          ('CurrentCharIndex', c_int), 
 64          ('CurrentWordIndex', c_int), 
 65          ('CurrentChar', c_char), 
 66          ('CurrentWord', c_char_p)] 
 67   
 68   
 69  callbackType = WINFUNCTYPE(None, c_int, c_int, c_int, c_int) 
 70   
 71  @callbackType 
 72 -def TtsCallBackProc(handle, callmode, index, sample): 
 73          global LastIndex 
 74          LastIndex=index 
 75   
 76 -class TtsCallBack(Structure): 
 77          _fields_=[ 
 78          ('CallMode', c_int), 
 79          ('BookIndex', c_int), 
 80          ('CallbackProc', callbackType)] 
 81   
 82   
 83  call=TtsCallBack() 
 84   
 85 -def TtsOpen(): 
 86          global Handle, Tts, call 
 87          Tts=windll.LoadLibrary(TtsDir+"Tts3.dll") 
 88          Tts.Tts3Open(TtsDir, byref(Handle)) 
 89          os.chdir(NvdaDir)        
 90          call.CallMode=M_BOOKMARK 
 91          call.BookIndex=-1 
 92          call.CallbackProc=TtsCallBackProc 
 93          Tts.Tts3SetCallback(Handle, byref(call)) 
 94   
 95 -def TtsGetStatus(): 
 96          global Tts, Handle 
 97          Status=Tts3Status() 
 98          Tts.Tts3GetStatus(Handle, byref(Status)) 
 99   
100 -def TtsSpeak(text): 
101          global Handle, Tts 
102          Tts.Tts3GenSpeech(Handle, c_char_p(text), 0) 
103   
104 -def TtsStop(): 
105          global Handle, Tts 
106          Tts.Tts3Stop(Handle, 1) 
107   
108 -def TtsPause(): 
109          global Handle, Tts 
110          Tts.Tts3Pause(Handle) 
111   
112 -def TtsRestart(): 
113          global Handle,Tts 
114          Tts.Tts3Restart(Handle) 
115   
116 -def TtsSetParam(param, value, relative): 
117          global Tts, Handle  
118          Tts.Tts3SetProsodyValue(Handle, param, value, relative) 
119   
120 -def TtsGetProsody(param): 
121          global Tts, Handle  
122          Parameters=TtsProsody() 
123          Tts.Tts3GetProsody(Handle, byref(Parameters)) 
124          return getattr(Parameters, param) 
125   
126 -def TtsClose(): 
127          global Tts, Handle  
128          TtsStop() 
129          Tts.Tts3Close(Handle) 
130          Status=Tts3Status() 
131          while Status.SynthType!=ST_NONE: TtsGetStatus() 
132          Tts=None 
133