Mercurial > cpython-lru_cache-weakref

annotate Lib/audiodev.py @ 80661:94de77bd0b4b 2.7

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Issue #16194: document imp.load_dynamic problems when read several extension modules from the same binary object file.
author Andrew Svetlov <andrew.svetlov@gmail.com>
date Thu, 29 Nov 2012 19:51:28 +0200
parents ffdb5f4139fe
children
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Guido van Rossum <guido@python.org>
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1 """Classes for manipulating audio devices (currently only for Sun and SGI)"""
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ffdb5f4139fe Deprecate the audiodev module for 3.0.
Brett Cannon <bcannon@gmail.com>
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2 from warnings import warnpy3k
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3 warnpy3k("the audiodev module has been removed in Python 3.0", stacklevel=2)
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4 del warnpy3k
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5
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6 __all__ = ["error","AudioDev"]
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7
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8 class error(Exception):
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9 pass
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10
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11 class Play_Audio_sgi:
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12 # Private instance variables
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13 ## if 0: access frameratelist, nchannelslist, sampwidthlist, oldparams, \
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14 ## params, config, inited_outrate, inited_width, \
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15 ## inited_nchannels, port, converter, classinited: private
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16
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17 classinited = 0
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18 frameratelist = nchannelslist = sampwidthlist = None
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19
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20 def initclass(self):
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21 import AL
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22 self.frameratelist = [
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23 (48000, AL.RATE_48000),
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24 (44100, AL.RATE_44100),
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25 (32000, AL.RATE_32000),
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26 (22050, AL.RATE_22050),
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27 (16000, AL.RATE_16000),
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28 (11025, AL.RATE_11025),
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29 ( 8000, AL.RATE_8000),
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30 ]
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31 self.nchannelslist = [
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32 (1, AL.MONO),
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33 (2, AL.STEREO),
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34 (4, AL.QUADRO),
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35 ]
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36 self.sampwidthlist = [
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37 (1, AL.SAMPLE_8),
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38 (2, AL.SAMPLE_16),
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39 (3, AL.SAMPLE_24),
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40 ]
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41 self.classinited = 1
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42
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43 def __init__(self):
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44 import al, AL
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45 if not self.classinited:
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46 self.initclass()
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47 self.oldparams = []
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48 self.params = [AL.OUTPUT_RATE, 0]
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49 self.config = al.newconfig()
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50 self.inited_outrate = 0
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51 self.inited_width = 0
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52 self.inited_nchannels = 0
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53 self.converter = None
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54 self.port = None
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55 return
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56
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57 def __del__(self):
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58 if self.port:
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59 self.stop()
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60 if self.oldparams:
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61 import al, AL
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62 al.setparams(AL.DEFAULT_DEVICE, self.oldparams)
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63 self.oldparams = []
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64
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65 def wait(self):
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66 if not self.port:
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67 return
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68 import time
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69 while self.port.getfilled() > 0:
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70 time.sleep(0.1)
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71 self.stop()
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72
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73 def stop(self):
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74 if self.port:
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75 self.port.closeport()
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76 self.port = None
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77 if self.oldparams:
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78 import al, AL
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79 al.setparams(AL.DEFAULT_DEVICE, self.oldparams)
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80 self.oldparams = []
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81
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82 def setoutrate(self, rate):
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83 for (raw, cooked) in self.frameratelist:
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84 if rate == raw:
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85 self.params[1] = cooked
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86 self.inited_outrate = 1
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87 break
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88 else:
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89 raise error, 'bad output rate'
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90
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91 def setsampwidth(self, width):
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92 for (raw, cooked) in self.sampwidthlist:
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93 if width == raw:
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94 self.config.setwidth(cooked)
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95 self.inited_width = 1
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96 break
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97 else:
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98 if width == 0:
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99 import AL
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100 self.inited_width = 0
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101 self.config.setwidth(AL.SAMPLE_16)
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102 self.converter = self.ulaw2lin
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103 else:
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104 raise error, 'bad sample width'
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105
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106 def setnchannels(self, nchannels):
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107 for (raw, cooked) in self.nchannelslist:
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108 if nchannels == raw:
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109 self.config.setchannels(cooked)
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110 self.inited_nchannels = 1
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111 break
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112 else:
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113 raise error, 'bad # of channels'
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114
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115 def writeframes(self, data):
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116 if not (self.inited_outrate and self.inited_nchannels):
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117 raise error, 'params not specified'
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118 if not self.port:
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119 import al, AL
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120 self.port = al.openport('Python', 'w', self.config)
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121 self.oldparams = self.params[:]
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122 al.getparams(AL.DEFAULT_DEVICE, self.oldparams)
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123 al.setparams(AL.DEFAULT_DEVICE, self.params)
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124 if self.converter:
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125 data = self.converter(data)
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126 self.port.writesamps(data)
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127
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128 def getfilled(self):
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129 if self.port:
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130 return self.port.getfilled()
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131 else:
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132 return 0
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133
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134 def getfillable(self):
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135 if self.port:
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136 return self.port.getfillable()
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137 else:
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138 return self.config.getqueuesize()
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139
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140 # private methods
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141 ## if 0: access *: private
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142
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143 def ulaw2lin(self, data):
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144 import audioop
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145 return audioop.ulaw2lin(data, 2)
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146
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147 class Play_Audio_sun:
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148 ## if 0: access outrate, sampwidth, nchannels, inited_outrate, inited_width, \
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149 ## inited_nchannels, converter: private
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150
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parents: 14022
diff changeset
151 def __init__(self):
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152 self.outrate = 0
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Tim Peters <tim.peters@gmail.com>
parents: 14022
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153 self.sampwidth = 0
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
154 self.nchannels = 0
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
155 self.inited_outrate = 0
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
156 self.inited_width = 0
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
157 self.inited_nchannels = 0
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
158 self.converter = None
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
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159 self.port = None
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
160 return
1434
46c217337bde Interface to audio hardware for SGI and Sun.
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
161
15857
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
162 def __del__(self):
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
163 self.stop()
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Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
164
15857
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
165 def setoutrate(self, rate):
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
166 self.outrate = rate
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
167 self.inited_outrate = 1
1434
46c217337bde Interface to audio hardware for SGI and Sun.
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
168
15857
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
169 def setsampwidth(self, width):
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
170 self.sampwidth = width
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
171 self.inited_width = 1
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Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
172
15857
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
173 def setnchannels(self, nchannels):
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
174 self.nchannels = nchannels
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
175 self.inited_nchannels = 1
1434
46c217337bde Interface to audio hardware for SGI and Sun.
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
176
15857
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
177 def writeframes(self, data):
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
178 if not (self.inited_outrate and self.inited_width and self.inited_nchannels):
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
179 raise error, 'params not specified'
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
180 if not self.port:
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
181 import sunaudiodev, SUNAUDIODEV
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Tim Peters <tim.peters@gmail.com>
parents: 14022
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182 self.port = sunaudiodev.open('w')
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
183 info = self.port.getinfo()
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Tim Peters <tim.peters@gmail.com>
parents: 14022
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184 info.o_sample_rate = self.outrate
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
185 info.o_channels = self.nchannels
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
186 if self.sampwidth == 0:
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
187 info.o_precision = 8
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
188 self.o_encoding = SUNAUDIODEV.ENCODING_ULAW
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
189 # XXX Hack, hack -- leave defaults
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
190 else:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
191 info.o_precision = 8 * self.sampwidth
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
192 info.o_encoding = SUNAUDIODEV.ENCODING_LINEAR
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
193 self.port.setinfo(info)
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
194 if self.converter:
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
195 data = self.converter(data)
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
196 self.port.write(data)
1434
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parents:
diff changeset
197
15857
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
198 def wait(self):
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
199 if not self.port:
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
200 return
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
201 self.port.drain()
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
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202 self.stop()
1434
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Sjoerd Mullender <sjoerd@acm.org>
parents:
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203
15857
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
204 def stop(self):
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
205 if self.port:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
206 self.port.flush()
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
207 self.port.close()
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
208 self.port = None
1434
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parents:
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209
15857
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
210 def getfilled(self):
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
211 if self.port:
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
212 return self.port.obufcount()
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
213 else:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
214 return 0
1434
46c217337bde Interface to audio hardware for SGI and Sun.
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
215
19221
3c7ad5037ab1 Commenting out the getfillable() method -- it's broken, and nobody
Guido van Rossum <guido@python.org>
parents: 16070
diff changeset
216 ## # Nobody remembers what this method does, and it's broken. :-(
3c7ad5037ab1 Commenting out the getfillable() method -- it's broken, and nobody
Guido van Rossum <guido@python.org>
parents: 16070
diff changeset
217 ## def getfillable(self):
3c7ad5037ab1 Commenting out the getfillable() method -- it's broken, and nobody
Guido van Rossum <guido@python.org>
parents: 16070
diff changeset
218 ## return BUFFERSIZE - self.getfilled()
1434
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Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
219
46c217337bde Interface to audio hardware for SGI and Sun.
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
220 def AudioDev():
15857
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
221 # Dynamically try to import and use a platform specific module.
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
222 try:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
223 import al
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
224 except ImportError:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
225 try:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
226 import sunaudiodev
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
227 return Play_Audio_sun()
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
228 except ImportError:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
229 try:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
230 import Audio_mac
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
231 except ImportError:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
232 raise error, 'no audio device'
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
233 else:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
234 return Audio_mac.Play_Audio_mac()
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
235 else:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
236 return Play_Audio_sgi()
1893
aba51621244e audiodev.py: Mac port.
Guido van Rossum <guido@python.org>
parents: 1746
diff changeset
237
4710
7b9a6166281a Added support for 4-channel on SGI.
Guido van Rossum <guido@python.org>
parents: 4078
diff changeset
238 def test(fn = None):
15857
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
239 import sys
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
240 if sys.argv[1:]:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
241 fn = sys.argv[1]
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
242 else:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
243 fn = 'f:just samples:just.aif'
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
244 import aifc
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
245 af = aifc.open(fn, 'r')
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
246 print fn, af.getparams()
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
247 p = AudioDev()
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
248 p.setoutrate(af.getframerate())
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
249 p.setsampwidth(af.getsampwidth())
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
250 p.setnchannels(af.getnchannels())
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
251 BUFSIZ = af.getframerate()/af.getsampwidth()/af.getnchannels()
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
252 while 1:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
253 data = af.readframes(BUFSIZ)
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
254 if not data: break
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
255 print len(data)
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
256 p.writeframes(data)
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
257 p.wait()
1893
aba51621244e audiodev.py: Mac port.
Guido van Rossum <guido@python.org>
parents: 1746
diff changeset
258
aba51621244e audiodev.py: Mac port.
Guido van Rossum <guido@python.org>
parents: 1746
diff changeset
259 if __name__ == '__main__':
15857
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
260 test()