Mercurial > cpython-lru_cache-weakref

annotate Lib/audiodev.py @ 25838:8540887bcec6 2.2

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Backport of 2.183: Fix memory leak in add_subclass() found by NealN with valgrind.
author Guido van Rossum <guido@python.org>
date Fri, 18 Oct 2002 13:42:21 +0000
parents 3c7ad5037ab1
children 4cdf21a0dbbc ffdb5f4139fe
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11691
e34991022571 Mass patch by Ka-Ping Yee:
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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2
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b5345e99596b added __all__ lists to a number of Python modules
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3 __all__ = ["error","AudioDev"]
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4
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d44603f2b928 Convert some old-style string exceptions to class exceptions.
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5 class error(Exception):
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6 pass
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7
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8 class Play_Audio_sgi:
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9 # Private instance variables
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10 ## if 0: access frameratelist, nchannelslist, sampwidthlist, oldparams, \
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11 ## params, config, inited_outrate, inited_width, \
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12 ## inited_nchannels, port, converter, classinited: private
1746
1940892d2fe3 Merge alpha100 branch back to main trunk
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13
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14 classinited = 0
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15 frameratelist = nchannelslist = sampwidthlist = None
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16
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17 def initclass(self):
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18 import AL
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19 self.frameratelist = [
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20 (48000, AL.RATE_48000),
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21 (44100, AL.RATE_44100),
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22 (32000, AL.RATE_32000),
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23 (22050, AL.RATE_22050),
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24 (16000, AL.RATE_16000),
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25 (11025, AL.RATE_11025),
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26 ( 8000, AL.RATE_8000),
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27 ]
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28 self.nchannelslist = [
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29 (1, AL.MONO),
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30 (2, AL.STEREO),
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31 (4, AL.QUADRO),
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32 ]
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33 self.sampwidthlist = [
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34 (1, AL.SAMPLE_8),
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35 (2, AL.SAMPLE_16),
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36 (3, AL.SAMPLE_24),
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37 ]
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38 self.classinited = 1
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39
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40 def __init__(self):
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41 import al, AL
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42 if not self.classinited:
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43 self.initclass()
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44 self.oldparams = []
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45 self.params = [AL.OUTPUT_RATE, 0]
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46 self.config = al.newconfig()
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47 self.inited_outrate = 0
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48 self.inited_width = 0
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49 self.inited_nchannels = 0
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50 self.converter = None
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51 self.port = None
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52 return
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53
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54 def __del__(self):
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55 if self.port:
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56 self.stop()
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57 if self.oldparams:
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58 import al, AL
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59 al.setparams(AL.DEFAULT_DEVICE, self.oldparams)
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60 self.oldparams = []
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61
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62 def wait(self):
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63 if not self.port:
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64 return
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65 import time
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66 while self.port.getfilled() > 0:
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67 time.sleep(0.1)
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68 self.stop()
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69
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70 def stop(self):
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71 if self.port:
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72 self.port.closeport()
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73 self.port = None
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74 if self.oldparams:
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75 import al, AL
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76 al.setparams(AL.DEFAULT_DEVICE, self.oldparams)
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77 self.oldparams = []
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78
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79 def setoutrate(self, rate):
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80 for (raw, cooked) in self.frameratelist:
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81 if rate == raw:
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82 self.params[1] = cooked
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83 self.inited_outrate = 1
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84 break
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85 else:
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86 raise error, 'bad output rate'
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87
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88 def setsampwidth(self, width):
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89 for (raw, cooked) in self.sampwidthlist:
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90 if width == raw:
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91 self.config.setwidth(cooked)
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92 self.inited_width = 1
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93 break
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94 else:
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95 if width == 0:
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96 import AL
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97 self.inited_width = 0
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98 self.config.setwidth(AL.SAMPLE_16)
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99 self.converter = self.ulaw2lin
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100 else:
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101 raise error, 'bad sample width'
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102
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103 def setnchannels(self, nchannels):
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104 for (raw, cooked) in self.nchannelslist:
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105 if nchannels == raw:
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106 self.config.setchannels(cooked)
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107 self.inited_nchannels = 1
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108 break
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109 else:
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110 raise error, 'bad # of channels'
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111
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112 def writeframes(self, data):
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113 if not (self.inited_outrate and self.inited_nchannels):
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114 raise error, 'params not specified'
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115 if not self.port:
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116 import al, AL
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117 self.port = al.openport('Python', 'w', self.config)
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118 self.oldparams = self.params[:]
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119 al.getparams(AL.DEFAULT_DEVICE, self.oldparams)
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120 al.setparams(AL.DEFAULT_DEVICE, self.params)
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121 if self.converter:
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122 data = self.converter(data)
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123 self.port.writesamps(data)
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124
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125 def getfilled(self):
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126 if self.port:
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127 return self.port.getfilled()
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128 else:
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129 return 0
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130
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131 def getfillable(self):
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132 if self.port:
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133 return self.port.getfillable()
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134 else:
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135 return self.config.getqueuesize()
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136
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137 # private methods
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138 ## if 0: access *: private
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139
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140 def ulaw2lin(self, data):
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141 import audioop
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142 return audioop.ulaw2lin(data, 2)
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143
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144 class Play_Audio_sun:
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145 ## if 0: access outrate, sampwidth, nchannels, inited_outrate, inited_width, \
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146 ## inited_nchannels, converter: private
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147
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148 def __init__(self):
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149 self.outrate = 0
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150 self.sampwidth = 0
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151 self.nchannels = 0
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Tim Peters <tim.peters@gmail.com>
parents: 14022
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152 self.inited_outrate = 0
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Tim Peters <tim.peters@gmail.com>
parents: 14022
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153 self.inited_width = 0
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
154 self.inited_nchannels = 0
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Tim Peters <tim.peters@gmail.com>
parents: 14022
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155 self.converter = None
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
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156 self.port = None
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
157 return
1434
46c217337bde Interface to audio hardware for SGI and Sun.
Sjoerd Mullender <sjoerd@acm.org>
parents:
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158
15857
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
159 def __del__(self):
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
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160 self.stop()
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parents:
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161
15857
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
162 def setoutrate(self, rate):
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Tim Peters <tim.peters@gmail.com>
parents: 14022
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163 self.outrate = rate
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
164 self.inited_outrate = 1
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Sjoerd Mullender <sjoerd@acm.org>
parents:
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165
15857
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
166 def setsampwidth(self, width):
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
167 self.sampwidth = width
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Tim Peters <tim.peters@gmail.com>
parents: 14022
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168 self.inited_width = 1
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parents:
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169
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parents: 14022
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170 def setnchannels(self, nchannels):
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
171 self.nchannels = nchannels
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Tim Peters <tim.peters@gmail.com>
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172 self.inited_nchannels = 1
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Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
173
15857
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
174 def writeframes(self, data):
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
175 if not (self.inited_outrate and self.inited_width and self.inited_nchannels):
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
176 raise error, 'params not specified'
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
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177 if not self.port:
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Tim Peters <tim.peters@gmail.com>
parents: 14022
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178 import sunaudiodev, SUNAUDIODEV
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Tim Peters <tim.peters@gmail.com>
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179 self.port = sunaudiodev.open('w')
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Tim Peters <tim.peters@gmail.com>
parents: 14022
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180 info = self.port.getinfo()
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Tim Peters <tim.peters@gmail.com>
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181 info.o_sample_rate = self.outrate
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Tim Peters <tim.peters@gmail.com>
parents: 14022
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182 info.o_channels = self.nchannels
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
183 if self.sampwidth == 0:
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Tim Peters <tim.peters@gmail.com>
parents: 14022
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184 info.o_precision = 8
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
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185 self.o_encoding = SUNAUDIODEV.ENCODING_ULAW
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
186 # XXX Hack, hack -- leave defaults
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Tim Peters <tim.peters@gmail.com>
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187 else:
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
188 info.o_precision = 8 * self.sampwidth
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Tim Peters <tim.peters@gmail.com>
parents: 14022
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189 info.o_encoding = SUNAUDIODEV.ENCODING_LINEAR
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
190 self.port.setinfo(info)
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
191 if self.converter:
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
192 data = self.converter(data)
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Tim Peters <tim.peters@gmail.com>
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diff changeset
193 self.port.write(data)
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parents:
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194
15857
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195 def wait(self):
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
196 if not self.port:
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Tim Peters <tim.peters@gmail.com>
parents: 14022
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197 return
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
198 self.port.drain()
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Tim Peters <tim.peters@gmail.com>
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199 self.stop()
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parents:
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200
15857
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
201 def stop(self):
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
202 if self.port:
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
203 self.port.flush()
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
204 self.port.close()
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Tim Peters <tim.peters@gmail.com>
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205 self.port = None
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parents:
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206
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Tim Peters <tim.peters@gmail.com>
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diff changeset
207 def getfilled(self):
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
208 if self.port:
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
209 return self.port.obufcount()
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Tim Peters <tim.peters@gmail.com>
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diff changeset
210 else:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
211 return 0
1434
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parents:
diff changeset
212
19221
3c7ad5037ab1 Commenting out the getfillable() method -- it's broken, and nobody
Guido van Rossum <guido@python.org>
parents: 16070
diff changeset
213 ## # 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
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214 ## def getfillable(self):
3c7ad5037ab1 Commenting out the getfillable() method -- it's broken, and nobody
Guido van Rossum <guido@python.org>
parents: 16070
diff changeset
215 ## return BUFFERSIZE - self.getfilled()
1434
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parents:
diff changeset
216
46c217337bde Interface to audio hardware for SGI and Sun.
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
217 def AudioDev():
15857
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diff changeset
218 # Dynamically try to import and use a platform specific module.
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
219 try:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
220 import al
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
221 except ImportError:
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 sunaudiodev
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
224 return Play_Audio_sun()
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
225 except ImportError:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
226 try:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
227 import Audio_mac
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 raise error, 'no audio device'
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
230 else:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
231 return Audio_mac.Play_Audio_mac()
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
232 else:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
233 return Play_Audio_sgi()
1893
aba51621244e audiodev.py: Mac port.
Guido van Rossum <guido@python.org>
parents: 1746
diff changeset
234
4710
7b9a6166281a Added support for 4-channel on SGI.
Guido van Rossum <guido@python.org>
parents: 4078
diff changeset
235 def test(fn = None):
15857
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Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
236 import sys
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
237 if sys.argv[1:]:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
238 fn = sys.argv[1]
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
239 else:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
240 fn = 'f:just samples:just.aif'
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
241 import aifc
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
242 af = aifc.open(fn, 'r')
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
243 print fn, af.getparams()
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
244 p = AudioDev()
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
245 p.setoutrate(af.getframerate())
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
246 p.setsampwidth(af.getsampwidth())
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
247 p.setnchannels(af.getnchannels())
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
248 BUFSIZ = af.getframerate()/af.getsampwidth()/af.getnchannels()
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
249 while 1:
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
250 data = af.readframes(BUFSIZ)
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
251 if not data: break
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
252 print len(data)
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
253 p.writeframes(data)
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
254 p.wait()
1893
aba51621244e audiodev.py: Mac port.
Guido van Rossum <guido@python.org>
parents: 1746
diff changeset
255
aba51621244e audiodev.py: Mac port.
Guido van Rossum <guido@python.org>
parents: 1746
diff changeset
256 if __name__ == '__main__':
15857
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
257 test()