Mercurial > cpython-lru_cache-weakref

annotate Lib/aifc.py @ 54294:dba767bc3155 legacy-trunk

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remove mention of old ctypes version
author Benjamin Peterson <benjamin@python.org>
date Sat, 23 May 2009 20:59:09 +0000
parents 85b9df525e10
children 247d5a5eafa5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 """Stuff to parse AIFF-C and AIFF files.
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2
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3 Unless explicitly stated otherwise, the description below is true
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4 both for AIFF-C files and AIFF files.
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5
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6 An AIFF-C file has the following structure.
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7
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8 +-----------------+
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9 | FORM |
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10 +-----------------+
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11 | <size> |
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12 +----+------------+
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13 | | AIFC |
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14 | +------------+
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15 | | <chunks> |
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16 | | . |
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17 | | . |
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18 | | . |
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19 +----+------------+
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20
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21 An AIFF file has the string "AIFF" instead of "AIFC".
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22
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23 A chunk consists of an identifier (4 bytes) followed by a size (4 bytes,
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24 big endian order), followed by the data. The size field does not include
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25 the size of the 8 byte header.
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26
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27 The following chunk types are recognized.
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28
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29 FVER
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30 <version number of AIFF-C defining document> (AIFF-C only).
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31 MARK
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32 <# of markers> (2 bytes)
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33 list of markers:
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34 <marker ID> (2 bytes, must be > 0)
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35 <position> (4 bytes)
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36 <marker name> ("pstring")
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37 COMM
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38 <# of channels> (2 bytes)
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39 <# of sound frames> (4 bytes)
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40 <size of the samples> (2 bytes)
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41 <sampling frequency> (10 bytes, IEEE 80-bit extended
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42 floating point)
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43 in AIFF-C files only:
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44 <compression type> (4 bytes)
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45 <human-readable version of compression type> ("pstring")
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46 SSND
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47 <offset> (4 bytes, not used by this program)
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48 <blocksize> (4 bytes, not used by this program)
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49 <sound data>
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50
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51 A pstring consists of 1 byte length, a string of characters, and 0 or 1
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52 byte pad to make the total length even.
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53
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54 Usage.
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55
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56 Reading AIFF files:
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57 f = aifc.open(file, 'r')
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58 where file is either the name of a file or an open file pointer.
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59 The open file pointer must have methods read(), seek(), and close().
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60 In some types of audio files, if the setpos() method is not used,
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61 the seek() method is not necessary.
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62
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63 This returns an instance of a class with the following public methods:
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64 getnchannels() -- returns number of audio channels (1 for
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65 mono, 2 for stereo)
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66 getsampwidth() -- returns sample width in bytes
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67 getframerate() -- returns sampling frequency
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68 getnframes() -- returns number of audio frames
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69 getcomptype() -- returns compression type ('NONE' for AIFF files)
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70 getcompname() -- returns human-readable version of
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71 compression type ('not compressed' for AIFF files)
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72 getparams() -- returns a tuple consisting of all of the
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73 above in the above order
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74 getmarkers() -- get the list of marks in the audio file or None
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75 if there are no marks
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76 getmark(id) -- get mark with the specified id (raises an error
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77 if the mark does not exist)
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78 readframes(n) -- returns at most n frames of audio
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79 rewind() -- rewind to the beginning of the audio stream
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80 setpos(pos) -- seek to the specified position
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81 tell() -- return the current position
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82 close() -- close the instance (make it unusable)
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83 The position returned by tell(), the position given to setpos() and
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84 the position of marks are all compatible and have nothing to do with
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85 the actual position in the file.
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86 The close() method is called automatically when the class instance
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87 is destroyed.
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88
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89 Writing AIFF files:
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90 f = aifc.open(file, 'w')
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91 where file is either the name of a file or an open file pointer.
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92 The open file pointer must have methods write(), tell(), seek(), and
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93 close().
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94
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95 This returns an instance of a class with the following public methods:
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96 aiff() -- create an AIFF file (AIFF-C default)
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97 aifc() -- create an AIFF-C file
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98 setnchannels(n) -- set the number of channels
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99 setsampwidth(n) -- set the sample width
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100 setframerate(n) -- set the frame rate
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101 setnframes(n) -- set the number of frames
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102 setcomptype(type, name)
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103 -- set the compression type and the
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104 human-readable compression type
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105 setparams(tuple)
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106 -- set all parameters at once
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107 setmark(id, pos, name)
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108 -- add specified mark to the list of marks
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109 tell() -- return current position in output file (useful
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110 in combination with setmark())
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111 writeframesraw(data)
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112 -- write audio frames without pathing up the
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113 file header
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114 writeframes(data)
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115 -- write audio frames and patch up the file header
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116 close() -- patch up the file header and close the
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117 output file
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118 You should set the parameters before the first writeframesraw or
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119 writeframes. The total number of frames does not need to be set,
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120 but when it is set to the correct value, the header does not have to
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121 be patched up.
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122 It is best to first set all parameters, perhaps possibly the
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123 compression type, and then write audio frames using writeframesraw.
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124 When all frames have been written, either call writeframes('') or
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125 close() to patch up the sizes in the header.
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126 Marks can be added anytime. If there are any marks, ypu must call
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127 close() after all frames have been written.
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128 The close() method is called automatically when the class instance
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129 is destroyed.
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130
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131 When a file is opened with the extension '.aiff', an AIFF file is
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132 written, otherwise an AIFF-C file is written. This default can be
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133 changed by calling aiff() or aifc() before the first writeframes or
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134 writeframesraw.
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135 """
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136
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137 import struct
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138 import __builtin__
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139
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140 __all__ = ["Error","open","openfp"]
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141
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142 class Error(Exception):
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143 pass
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144
24776
fe3472f2f8eb Fix wanrings about unsigned hex constants.
Guido van Rossum <guido@python.org>
parents: 21916
diff changeset
145 _AIFC_version = 0xA2805140L # Version 1 of AIFF-C
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146
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147 def _read_long(file):
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Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
148 try:
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parents: 11227
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149 return struct.unpack('>l', file.read(4))[0]
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Guido van Rossum <guido@python.org>
parents: 11227
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150 except struct.error:
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Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
151 raise EOFError
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152
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153 def _read_ulong(file):
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Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
154 try:
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parents: 11227
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155 return struct.unpack('>L', file.read(4))[0]
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Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
156 except struct.error:
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Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
157 raise EOFError
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158
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159 def _read_short(file):
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parents: 11227
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160 try:
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parents: 11227
diff changeset
161 return struct.unpack('>h', file.read(2))[0]
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parents: 11227
diff changeset
162 except struct.error:
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163 raise EOFError
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164
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165 def _read_string(file):
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166 length = ord(file.read(1))
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167 if length == 0:
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168 data = ''
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169 else:
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170 data = file.read(length)
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171 if length & 1 == 0:
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172 dummy = file.read(1)
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173 return data
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174
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175 _HUGE_VAL = 1.79769313486231e+308 # See <limits.h>
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176
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177 def _read_float(f): # 10 bytes
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178 expon = _read_short(f) # 2 bytes
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179 sign = 1
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180 if expon < 0:
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181 sign = -1
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182 expon = expon + 0x8000
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Guido van Rossum <guido@python.org>
parents: 11227
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183 himant = _read_ulong(f) # 4 bytes
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Guido van Rossum <guido@python.org>
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184 lomant = _read_ulong(f) # 4 bytes
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Guido van Rossum <guido@python.org>
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185 if expon == himant == lomant == 0:
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Guido van Rossum <guido@python.org>
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186 f = 0.0
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187 elif expon == 0x7FFF:
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188 f = _HUGE_VAL
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189 else:
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190 expon = expon - 16383
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parents: 11227
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191 f = (himant * 0x100000000L + lomant) * pow(2.0, expon - 63)
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parents: 11227
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192 return sign * f
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193
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194 def _write_short(f, x):
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195 f.write(struct.pack('>h', x))
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196
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197 def _write_long(f, x):
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198 f.write(struct.pack('>L', x))
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199
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200 def _write_string(f, s):
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4e4e653a80bf Add a length check to aifc to ensure it doesn't write a bogus file
Bob Ippolito <bob@redivi.com>
parents: 31515
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201 if len(s) > 255:
4e4e653a80bf Add a length check to aifc to ensure it doesn't write a bogus file
Bob Ippolito <bob@redivi.com>
parents: 31515
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202 raise ValueError("string exceeds maximum pstring length")
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203 f.write(chr(len(s)))
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204 f.write(s)
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205 if len(s) & 1 == 0:
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206 f.write(chr(0))
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207
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208 def _write_float(f, x):
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209 import math
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210 if x < 0:
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211 sign = 0x8000
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212 x = x * -1
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213 else:
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214 sign = 0
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215 if x == 0:
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216 expon = 0
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217 himant = 0
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218 lomant = 0
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219 else:
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220 fmant, expon = math.frexp(x)
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221 if expon > 16384 or fmant >= 1: # Infinity or NaN
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222 expon = sign|0x7FFF
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223 himant = 0
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224 lomant = 0
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225 else: # Finite
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226 expon = expon + 16382
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227 if expon < 0: # denormalized
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228 fmant = math.ldexp(fmant, expon)
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229 expon = 0
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230 expon = expon | sign
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231 fmant = math.ldexp(fmant, 32)
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232 fsmant = math.floor(fmant)
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233 himant = long(fsmant)
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234 fmant = math.ldexp(fmant - fsmant, 32)
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Guido van Rossum <guido@python.org>
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235 fsmant = math.floor(fmant)
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236 lomant = long(fsmant)
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237 _write_short(f, expon)
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238 _write_long(f, himant)
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239 _write_long(f, lomant)
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parents:
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240
10937
e8ff4b1298c2 Patch/new code by Sjoerd Mullender:
Guido van Rossum <guido@python.org>
parents: 10817
diff changeset
241 from chunk import Chunk
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diff changeset
242
1291
517d29ebc840 * ftplib.py: added abort() command (sends oob data).
Guido van Rossum <guido@python.org>
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243 class Aifc_read:
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244 # Variables used in this class:
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245 #
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parents: 11227
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246 # These variables are available to the user though appropriate
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247 # methods of this class:
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248 # _file -- the open file with methods read(), close(), and seek()
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249 # set through the __init__() method
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250 # _nchannels -- the number of audio channels
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251 # available through the getnchannels() method
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Guido van Rossum <guido@python.org>
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diff changeset
252 # _nframes -- the number of audio frames
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diff changeset
253 # available through the getnframes() method
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parents: 11227
diff changeset
254 # _sampwidth -- the number of bytes per audio sample
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Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
255 # available through the getsampwidth() method
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parents: 11227
diff changeset
256 # _framerate -- the sampling frequency
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parents: 11227
diff changeset
257 # available through the getframerate() method
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parents: 11227
diff changeset
258 # _comptype -- the AIFF-C compression type ('NONE' if AIFF)
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parents: 11227
diff changeset
259 # available through the getcomptype() method
e34991022571 Mass patch by Ka-Ping Yee:
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parents: 11227
diff changeset
260 # _compname -- the human-readable AIFF-C compression type
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
261 # available through the getcomptype() method
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
262 # _markers -- the marks in the audio file
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parents: 11227
diff changeset
263 # available through the getmarkers() and getmark()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
264 # methods
e34991022571 Mass patch by Ka-Ping Yee:
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parents: 11227
diff changeset
265 # _soundpos -- the position in the audio stream
e34991022571 Mass patch by Ka-Ping Yee:
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diff changeset
266 # available through the tell() method, set through the
e34991022571 Mass patch by Ka-Ping Yee:
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parents: 11227
diff changeset
267 # setpos() method
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
268 #
e34991022571 Mass patch by Ka-Ping Yee:
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diff changeset
269 # These variables are used internally only:
e34991022571 Mass patch by Ka-Ping Yee:
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diff changeset
270 # _version -- the AIFF-C version number
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diff changeset
271 # _decomp -- the decompressor from builtin module cl
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diff changeset
272 # _comm_chunk_read -- 1 iff the COMM chunk has been read
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diff changeset
273 # _aifc -- 1 iff reading an AIFF-C file
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parents: 11227
diff changeset
274 # _ssnd_seek_needed -- 1 iff positioned correctly in audio
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
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diff changeset
275 # file for readframes()
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diff changeset
276 # _ssnd_chunk -- instantiation of a chunk class for the SSND chunk
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
277 # _framesize -- size of one frame in the file
1437
e499116d45e4 aifc.py, sunau.py: Adapted comments; added access statements.
Sjoerd Mullender <sjoerd@acm.org>
parents: 1436
diff changeset
278
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diff changeset
279 def initfp(self, file):
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diff changeset
280 self._version = 0
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diff changeset
281 self._decomp = None
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282 self._convert = None
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283 self._markers = []
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diff changeset
284 self._soundpos = 0
53872
85b9df525e10 Issue5955: aifc's close method did not close the file it wrapped,
R. David Murray <rdmurray@bitdance.com>
parents: 53870
diff changeset
285 self._file = file
85b9df525e10 Issue5955: aifc's close method did not close the file it wrapped,
R. David Murray <rdmurray@bitdance.com>
parents: 53870
diff changeset
286 chunk = Chunk(file)
85b9df525e10 Issue5955: aifc's close method did not close the file it wrapped,
R. David Murray <rdmurray@bitdance.com>
parents: 53870
diff changeset
287 if chunk.getname() != 'FORM':
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
288 raise Error, 'file does not start with FORM id'
53872
85b9df525e10 Issue5955: aifc's close method did not close the file it wrapped,
R. David Murray <rdmurray@bitdance.com>
parents: 53870
diff changeset
289 formdata = chunk.read(4)
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
290 if formdata == 'AIFF':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
291 self._aifc = 0
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
292 elif formdata == 'AIFC':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
293 self._aifc = 1
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
294 else:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
295 raise Error, 'not an AIFF or AIFF-C file'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
296 self._comm_chunk_read = 0
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
297 while 1:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
298 self._ssnd_seek_needed = 1
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
299 try:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
300 chunk = Chunk(self._file)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
301 except EOFError:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
302 break
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
303 chunkname = chunk.getname()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
304 if chunkname == 'COMM':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
305 self._read_comm_chunk(chunk)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
306 self._comm_chunk_read = 1
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
307 elif chunkname == 'SSND':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
308 self._ssnd_chunk = chunk
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
309 dummy = chunk.read(8)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
310 self._ssnd_seek_needed = 0
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
311 elif chunkname == 'FVER':
24776
fe3472f2f8eb Fix wanrings about unsigned hex constants.
Guido van Rossum <guido@python.org>
parents: 21916
diff changeset
312 self._version = _read_ulong(chunk)
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
313 elif chunkname == 'MARK':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
314 self._readmark(chunk)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
315 chunk.skip()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
316 if not self._comm_chunk_read or not self._ssnd_chunk:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
317 raise Error, 'COMM chunk and/or SSND chunk missing'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
318 if self._aifc and self._decomp:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
319 import cl
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
320 params = [cl.ORIGINAL_FORMAT, 0,
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
321 cl.BITS_PER_COMPONENT, self._sampwidth * 8,
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
322 cl.FRAME_RATE, self._framerate]
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
323 if self._nchannels == 1:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
324 params[1] = cl.MONO
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
325 elif self._nchannels == 2:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
326 params[1] = cl.STEREO_INTERLEAVED
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
327 else:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
328 raise Error, 'cannot compress more than 2 channels'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
329 self._decomp.SetParams(params)
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
330
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
331 def __init__(self, f):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
332 if type(f) == type(''):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
333 f = __builtin__.open(f, 'rb')
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
334 # else, assume it is an open file object already
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
335 self.initfp(f)
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
336
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
337 #
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
338 # User visible methods.
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
339 #
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
340 def getfp(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
341 return self._file
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
342
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
343 def rewind(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
344 self._ssnd_seek_needed = 1
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
345 self._soundpos = 0
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
346
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
347 def close(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
348 if self._decomp:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
349 self._decomp.CloseDecompressor()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
350 self._decomp = None
53870
a7caf29d1406 actually close files instead of leaving it to the gc #5955
Benjamin Peterson <benjamin@python.org>
parents: 53627
diff changeset
351 self._file.close()
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
352
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
353 def tell(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
354 return self._soundpos
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
355
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
356 def getnchannels(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
357 return self._nchannels
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
358
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
359 def getnframes(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
360 return self._nframes
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
361
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
362 def getsampwidth(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
363 return self._sampwidth
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
364
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
365 def getframerate(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
366 return self._framerate
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
367
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
368 def getcomptype(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
369 return self._comptype
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
370
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
371 def getcompname(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
372 return self._compname
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
373
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
374 ## def getversion(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
375 ## return self._version
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
376
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
377 def getparams(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
378 return self.getnchannels(), self.getsampwidth(), \
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
379 self.getframerate(), self.getnframes(), \
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
380 self.getcomptype(), self.getcompname()
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
381
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
382 def getmarkers(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
383 if len(self._markers) == 0:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
384 return None
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
385 return self._markers
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
386
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
387 def getmark(self, id):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
388 for marker in self._markers:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
389 if id == marker[0]:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
390 return marker
31515
71a294bd7950 Replace backticks with repr() or "%r"
Walter Dörwald <walter@livinglogic.de>
parents: 24776
diff changeset
391 raise Error, 'marker %r does not exist' % (id,)
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
392
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
393 def setpos(self, pos):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
394 if pos < 0 or pos > self._nframes:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
395 raise Error, 'position not in range'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
396 self._soundpos = pos
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
397 self._ssnd_seek_needed = 1
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
398
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
399 def readframes(self, nframes):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
400 if self._ssnd_seek_needed:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
401 self._ssnd_chunk.seek(0)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
402 dummy = self._ssnd_chunk.read(8)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
403 pos = self._soundpos * self._framesize
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
404 if pos:
11940
de8404573fe5 Sjoerd Mullender:
Guido van Rossum <guido@python.org>
parents: 11691
diff changeset
405 self._ssnd_chunk.seek(pos + 8)
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
406 self._ssnd_seek_needed = 0
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
407 if nframes == 0:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
408 return ''
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
409 data = self._ssnd_chunk.read(nframes * self._framesize)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
410 if self._convert and data:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
411 data = self._convert(data)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
412 self._soundpos = self._soundpos + len(data) / (self._nchannels * self._sampwidth)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
413 return data
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
414
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
415 #
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
416 # Internal methods.
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
417 #
1437
e499116d45e4 aifc.py, sunau.py: Adapted comments; added access statements.
Sjoerd Mullender <sjoerd@acm.org>
parents: 1436
diff changeset
418
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
419 def _decomp_data(self, data):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
420 import cl
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
421 dummy = self._decomp.SetParam(cl.FRAME_BUFFER_SIZE,
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
422 len(data) * 2)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
423 return self._decomp.Decompress(len(data) / self._nchannels,
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
424 data)
1419
204001dddcc3 aifc.py: added missing tell() method in AIFC write class;
Sjoerd Mullender <sjoerd@acm.org>
parents: 1336
diff changeset
425
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
426 def _ulaw2lin(self, data):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
427 import audioop
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
428 return audioop.ulaw2lin(data, 2)
1419
204001dddcc3 aifc.py: added missing tell() method in AIFC write class;
Sjoerd Mullender <sjoerd@acm.org>
parents: 1336
diff changeset
429
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
430 def _adpcm2lin(self, data):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
431 import audioop
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
432 if not hasattr(self, '_adpcmstate'):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
433 # first time
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
434 self._adpcmstate = None
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
435 data, self._adpcmstate = audioop.adpcm2lin(data, 2,
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
436 self._adpcmstate)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
437 return data
1864
aaf1e05e6842 Added support for ADPCM compression.
Sjoerd Mullender <sjoerd@acm.org>
parents: 1746
diff changeset
438
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
439 def _read_comm_chunk(self, chunk):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
440 self._nchannels = _read_short(chunk)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
441 self._nframes = _read_long(chunk)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
442 self._sampwidth = (_read_short(chunk) + 7) / 8
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
443 self._framerate = int(_read_float(chunk))
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
444 self._framesize = self._nchannels * self._sampwidth
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
445 if self._aifc:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
446 #DEBUG: SGI's soundeditor produces a bad size :-(
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
447 kludge = 0
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
448 if chunk.chunksize == 18:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
449 kludge = 1
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
450 print 'Warning: bad COMM chunk size'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
451 chunk.chunksize = 23
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
452 #DEBUG end
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
453 self._comptype = chunk.read(4)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
454 #DEBUG start
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
455 if kludge:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
456 length = ord(chunk.file.read(1))
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
457 if length & 1 == 0:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
458 length = length + 1
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
459 chunk.chunksize = chunk.chunksize + length
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
460 chunk.file.seek(-1, 1)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
461 #DEBUG end
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
462 self._compname = _read_string(chunk)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
463 if self._comptype != 'NONE':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
464 if self._comptype == 'G722':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
465 try:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
466 import audioop
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
467 except ImportError:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
468 pass
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
469 else:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
470 self._convert = self._adpcm2lin
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
471 self._framesize = self._framesize / 4
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
472 return
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
473 # for ULAW and ALAW try Compression Library
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
474 try:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
475 import cl
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
476 except ImportError:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
477 if self._comptype == 'ULAW':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
478 try:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
479 import audioop
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
480 self._convert = self._ulaw2lin
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
481 self._framesize = self._framesize / 2
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
482 return
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
483 except ImportError:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
484 pass
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
485 raise Error, 'cannot read compressed AIFF-C files'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
486 if self._comptype == 'ULAW':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
487 scheme = cl.G711_ULAW
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
488 self._framesize = self._framesize / 2
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
489 elif self._comptype == 'ALAW':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
490 scheme = cl.G711_ALAW
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
491 self._framesize = self._framesize / 2
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
492 else:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
493 raise Error, 'unsupported compression type'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
494 self._decomp = cl.OpenDecompressor(scheme)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
495 self._convert = self._decomp_data
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
496 else:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
497 self._comptype = 'NONE'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
498 self._compname = 'not compressed'
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
499
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
500 def _readmark(self, chunk):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
501 nmarkers = _read_short(chunk)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
502 # Some files appear to contain invalid counts.
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
503 # Cope with this by testing for EOF.
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
504 try:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
505 for i in range(nmarkers):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
506 id = _read_short(chunk)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
507 pos = _read_long(chunk)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
508 name = _read_string(chunk)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
509 if pos or name:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
510 # some files appear to have
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
511 # dummy markers consisting of
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
512 # a position 0 and name ''
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
513 self._markers.append((id, pos, name))
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
514 except EOFError:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
515 print 'Warning: MARK chunk contains only',
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
516 print len(self._markers),
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
517 if len(self._markers) == 1: print 'marker',
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
518 else: print 'markers',
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
519 print 'instead of', nmarkers
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
520
1291
517d29ebc840 * ftplib.py: added abort() command (sends oob data).
Guido van Rossum <guido@python.org>
parents: 1208
diff changeset
521 class Aifc_write:
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
522 # Variables used in this class:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
523 #
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
524 # These variables are user settable through appropriate methods
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
525 # of this class:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
526 # _file -- the open file with methods write(), close(), tell(), seek()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
527 # set through the __init__() method
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
528 # _comptype -- the AIFF-C compression type ('NONE' in AIFF)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
529 # set through the setcomptype() or setparams() method
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
530 # _compname -- the human-readable AIFF-C compression type
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
531 # set through the setcomptype() or setparams() method
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
532 # _nchannels -- the number of audio channels
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
533 # set through the setnchannels() or setparams() method
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
534 # _sampwidth -- the number of bytes per audio sample
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
535 # set through the setsampwidth() or setparams() method
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
536 # _framerate -- the sampling frequency
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
537 # set through the setframerate() or setparams() method
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
538 # _nframes -- the number of audio frames written to the header
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
539 # set through the setnframes() or setparams() method
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
540 # _aifc -- whether we're writing an AIFF-C file or an AIFF file
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
541 # set through the aifc() method, reset through the
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
542 # aiff() method
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
543 #
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
544 # These variables are used internally only:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
545 # _version -- the AIFF-C version number
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
546 # _comp -- the compressor from builtin module cl
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
547 # _nframeswritten -- the number of audio frames actually written
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
548 # _datalength -- the size of the audio samples written to the header
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
549 # _datawritten -- the size of the audio samples actually written
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
550
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
551 def __init__(self, f):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
552 if type(f) == type(''):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
553 filename = f
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
554 f = __builtin__.open(f, 'wb')
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
555 else:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
556 # else, assume it is an open file object already
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
557 filename = '???'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
558 self.initfp(f)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
559 if filename[-5:] == '.aiff':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
560 self._aifc = 0
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
561 else:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
562 self._aifc = 1
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
563
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
564 def initfp(self, file):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
565 self._file = file
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
566 self._version = _AIFC_version
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
567 self._comptype = 'NONE'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
568 self._compname = 'not compressed'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
569 self._comp = None
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
570 self._convert = None
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
571 self._nchannels = 0
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
572 self._sampwidth = 0
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
573 self._framerate = 0
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
574 self._nframes = 0
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
575 self._nframeswritten = 0
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
576 self._datawritten = 0
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
577 self._datalength = 0
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
578 self._markers = []
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
579 self._marklength = 0
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
580 self._aifc = 1 # AIFF-C is default
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
581
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
582 def __del__(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
583 if self._file:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
584 self.close()
1419
204001dddcc3 aifc.py: added missing tell() method in AIFC write class;
Sjoerd Mullender <sjoerd@acm.org>
parents: 1336
diff changeset
585
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
586 #
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
587 # User visible methods.
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
588 #
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
589 def aiff(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
590 if self._nframeswritten:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
591 raise Error, 'cannot change parameters after starting to write'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
592 self._aifc = 0
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
593
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
594 def aifc(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
595 if self._nframeswritten:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
596 raise Error, 'cannot change parameters after starting to write'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
597 self._aifc = 1
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
598
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
599 def setnchannels(self, nchannels):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
600 if self._nframeswritten:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
601 raise Error, 'cannot change parameters after starting to write'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
602 if nchannels < 1:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
603 raise Error, 'bad # of channels'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
604 self._nchannels = nchannels
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
605
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
606 def getnchannels(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
607 if not self._nchannels:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
608 raise Error, 'number of channels not set'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
609 return self._nchannels
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
610
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
611 def setsampwidth(self, sampwidth):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
612 if self._nframeswritten:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
613 raise Error, 'cannot change parameters after starting to write'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
614 if sampwidth < 1 or sampwidth > 4:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
615 raise Error, 'bad sample width'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
616 self._sampwidth = sampwidth
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
617
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
618 def getsampwidth(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
619 if not self._sampwidth:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
620 raise Error, 'sample width not set'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
621 return self._sampwidth
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
622
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
623 def setframerate(self, framerate):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
624 if self._nframeswritten:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
625 raise Error, 'cannot change parameters after starting to write'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
626 if framerate <= 0:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
627 raise Error, 'bad frame rate'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
628 self._framerate = framerate
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
629
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
630 def getframerate(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
631 if not self._framerate:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
632 raise Error, 'frame rate not set'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
633 return self._framerate
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
634
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
635 def setnframes(self, nframes):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
636 if self._nframeswritten:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
637 raise Error, 'cannot change parameters after starting to write'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
638 self._nframes = nframes
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
639
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
640 def getnframes(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
641 return self._nframeswritten
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
642
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
643 def setcomptype(self, comptype, compname):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
644 if self._nframeswritten:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
645 raise Error, 'cannot change parameters after starting to write'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
646 if comptype not in ('NONE', 'ULAW', 'ALAW', 'G722'):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
647 raise Error, 'unsupported compression type'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
648 self._comptype = comptype
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
649 self._compname = compname
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
650
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
651 def getcomptype(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
652 return self._comptype
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
653
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
654 def getcompname(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
655 return self._compname
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
656
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
657 ## def setversion(self, version):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
658 ## if self._nframeswritten:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
659 ## raise Error, 'cannot change parameters after starting to write'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
660 ## self._version = version
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
661
48179
df277e642e58 Remove tuple parameter unpacking in aifc to silence warnings under -3.
Brett Cannon <bcannon@gmail.com>
parents: 38494
diff changeset
662 def setparams(self, info):
df277e642e58 Remove tuple parameter unpacking in aifc to silence warnings under -3.
Brett Cannon <bcannon@gmail.com>
parents: 38494
diff changeset
663 nchannels, sampwidth, framerate, nframes, comptype, compname = info
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
664 if self._nframeswritten:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
665 raise Error, 'cannot change parameters after starting to write'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
666 if comptype not in ('NONE', 'ULAW', 'ALAW', 'G722'):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
667 raise Error, 'unsupported compression type'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
668 self.setnchannels(nchannels)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
669 self.setsampwidth(sampwidth)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
670 self.setframerate(framerate)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
671 self.setnframes(nframes)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
672 self.setcomptype(comptype, compname)
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
673
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
674 def getparams(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
675 if not self._nchannels or not self._sampwidth or not self._framerate:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
676 raise Error, 'not all parameters set'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
677 return self._nchannels, self._sampwidth, self._framerate, \
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
678 self._nframes, self._comptype, self._compname
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
679
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
680 def setmark(self, id, pos, name):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
681 if id <= 0:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
682 raise Error, 'marker ID must be > 0'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
683 if pos < 0:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
684 raise Error, 'marker position must be >= 0'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
685 if type(name) != type(''):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
686 raise Error, 'marker name must be a string'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
687 for i in range(len(self._markers)):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
688 if id == self._markers[i][0]:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
689 self._markers[i] = id, pos, name
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
690 return
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
691 self._markers.append((id, pos, name))
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
692
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
693 def getmark(self, id):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
694 for marker in self._markers:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
695 if id == marker[0]:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
696 return marker
31515
71a294bd7950 Replace backticks with repr() or "%r"
Walter Dörwald <walter@livinglogic.de>
parents: 24776
diff changeset
697 raise Error, 'marker %r does not exist' % (id,)
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
698
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
699 def getmarkers(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
700 if len(self._markers) == 0:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
701 return None
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
702 return self._markers
15857
0a8da6f397b7 Whitespace standardization.
Tim Peters <tim.peters@gmail.com>
parents: 14022
diff changeset
703
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
704 def tell(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
705 return self._nframeswritten
1419
204001dddcc3 aifc.py: added missing tell() method in AIFC write class;
Sjoerd Mullender <sjoerd@acm.org>
parents: 1336
diff changeset
706
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
707 def writeframesraw(self, data):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
708 self._ensure_header_written(len(data))
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
709 nframes = len(data) / (self._sampwidth * self._nchannels)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
710 if self._convert:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
711 data = self._convert(data)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
712 self._file.write(data)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
713 self._nframeswritten = self._nframeswritten + nframes
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
714 self._datawritten = self._datawritten + len(data)
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
715
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
716 def writeframes(self, data):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
717 self.writeframesraw(data)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
718 if self._nframeswritten != self._nframes or \
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
719 self._datalength != self._datawritten:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
720 self._patchheader()
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
721
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
722 def close(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
723 self._ensure_header_written(0)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
724 if self._datawritten & 1:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
725 # quick pad to even size
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
726 self._file.write(chr(0))
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
727 self._datawritten = self._datawritten + 1
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
728 self._writemarkers()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
729 if self._nframeswritten != self._nframes or \
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
730 self._datalength != self._datawritten or \
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
731 self._marklength:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
732 self._patchheader()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
733 if self._comp:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
734 self._comp.CloseCompressor()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
735 self._comp = None
53627
d682c9346848 prevent ref cycles by removing bound method on close()
Benjamin Peterson <benjamin@python.org>
parents: 53598
diff changeset
736 # Prevent ref cycles
d682c9346848 prevent ref cycles by removing bound method on close()
Benjamin Peterson <benjamin@python.org>
parents: 53598
diff changeset
737 self._convert = None
53870
a7caf29d1406 actually close files instead of leaving it to the gc #5955
Benjamin Peterson <benjamin@python.org>
parents: 53627
diff changeset
738 self._file.close()
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
739
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
740 #
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
741 # Internal methods.
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
742 #
1437
e499116d45e4 aifc.py, sunau.py: Adapted comments; added access statements.
Sjoerd Mullender <sjoerd@acm.org>
parents: 1436
diff changeset
743
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
744 def _comp_data(self, data):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
745 import cl
21916
15c0e7aef666 SF #515004 cleanup
Neal Norwitz <nnorwitz@gmail.com>
parents: 16070
diff changeset
746 dummy = self._comp.SetParam(cl.FRAME_BUFFER_SIZE, len(data))
15c0e7aef666 SF #515004 cleanup
Neal Norwitz <nnorwitz@gmail.com>
parents: 16070
diff changeset
747 dummy = self._comp.SetParam(cl.COMPRESSED_BUFFER_SIZE, len(data))
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
748 return self._comp.Compress(self._nframes, data)
1419
204001dddcc3 aifc.py: added missing tell() method in AIFC write class;
Sjoerd Mullender <sjoerd@acm.org>
parents: 1336
diff changeset
749
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
750 def _lin2ulaw(self, data):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
751 import audioop
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
752 return audioop.lin2ulaw(data, 2)
1419
204001dddcc3 aifc.py: added missing tell() method in AIFC write class;
Sjoerd Mullender <sjoerd@acm.org>
parents: 1336
diff changeset
753
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
754 def _lin2adpcm(self, data):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
755 import audioop
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
756 if not hasattr(self, '_adpcmstate'):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
757 self._adpcmstate = None
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
758 data, self._adpcmstate = audioop.lin2adpcm(data, 2,
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
759 self._adpcmstate)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
760 return data
1864
aaf1e05e6842 Added support for ADPCM compression.
Sjoerd Mullender <sjoerd@acm.org>
parents: 1746
diff changeset
761
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
762 def _ensure_header_written(self, datasize):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
763 if not self._nframeswritten:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
764 if self._comptype in ('ULAW', 'ALAW'):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
765 if not self._sampwidth:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
766 self._sampwidth = 2
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
767 if self._sampwidth != 2:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
768 raise Error, 'sample width must be 2 when compressing with ULAW or ALAW'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
769 if self._comptype == 'G722':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
770 if not self._sampwidth:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
771 self._sampwidth = 2
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
772 if self._sampwidth != 2:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
773 raise Error, 'sample width must be 2 when compressing with G7.22 (ADPCM)'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
774 if not self._nchannels:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
775 raise Error, '# channels not specified'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
776 if not self._sampwidth:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
777 raise Error, 'sample width not specified'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
778 if not self._framerate:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
779 raise Error, 'sampling rate not specified'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
780 self._write_header(datasize)
1314
918bee90f73e * calendar.py: minor cleanups
Guido van Rossum <guido@python.org>
parents: 1297
diff changeset
781
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
782 def _init_compression(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
783 if self._comptype == 'G722':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
784 self._convert = self._lin2adpcm
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
785 return
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
786 try:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
787 import cl
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
788 except ImportError:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
789 if self._comptype == 'ULAW':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
790 try:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
791 import audioop
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
792 self._convert = self._lin2ulaw
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
793 return
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
794 except ImportError:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
795 pass
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
796 raise Error, 'cannot write compressed AIFF-C files'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
797 if self._comptype == 'ULAW':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
798 scheme = cl.G711_ULAW
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
799 elif self._comptype == 'ALAW':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
800 scheme = cl.G711_ALAW
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
801 else:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
802 raise Error, 'unsupported compression type'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
803 self._comp = cl.OpenCompressor(scheme)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
804 params = [cl.ORIGINAL_FORMAT, 0,
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
805 cl.BITS_PER_COMPONENT, self._sampwidth * 8,
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
806 cl.FRAME_RATE, self._framerate,
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
807 cl.FRAME_BUFFER_SIZE, 100,
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
808 cl.COMPRESSED_BUFFER_SIZE, 100]
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
809 if self._nchannels == 1:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
810 params[1] = cl.MONO
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
811 elif self._nchannels == 2:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
812 params[1] = cl.STEREO_INTERLEAVED
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
813 else:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
814 raise Error, 'cannot compress more than 2 channels'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
815 self._comp.SetParams(params)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
816 # the compressor produces a header which we ignore
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
817 dummy = self._comp.Compress(0, '')
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
818 self._convert = self._comp_data
1419
204001dddcc3 aifc.py: added missing tell() method in AIFC write class;
Sjoerd Mullender <sjoerd@acm.org>
parents: 1336
diff changeset
819
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
820 def _write_header(self, initlength):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
821 if self._aifc and self._comptype != 'NONE':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
822 self._init_compression()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
823 self._file.write('FORM')
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
824 if not self._nframes:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
825 self._nframes = initlength / (self._nchannels * self._sampwidth)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
826 self._datalength = self._nframes * self._nchannels * self._sampwidth
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
827 if self._datalength & 1:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
828 self._datalength = self._datalength + 1
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
829 if self._aifc:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
830 if self._comptype in ('ULAW', 'ALAW'):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
831 self._datalength = self._datalength / 2
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
832 if self._datalength & 1:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
833 self._datalength = self._datalength + 1
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
834 elif self._comptype == 'G722':
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
835 self._datalength = (self._datalength + 3) / 4
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
836 if self._datalength & 1:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
837 self._datalength = self._datalength + 1
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
838 self._form_length_pos = self._file.tell()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
839 commlength = self._write_form_length(self._datalength)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
840 if self._aifc:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
841 self._file.write('AIFC')
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
842 self._file.write('FVER')
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
843 _write_long(self._file, 4)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
844 _write_long(self._file, self._version)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
845 else:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
846 self._file.write('AIFF')
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
847 self._file.write('COMM')
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
848 _write_long(self._file, commlength)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
849 _write_short(self._file, self._nchannels)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
850 self._nframes_pos = self._file.tell()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
851 _write_long(self._file, self._nframes)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
852 _write_short(self._file, self._sampwidth * 8)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
853 _write_float(self._file, self._framerate)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
854 if self._aifc:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
855 self._file.write(self._comptype)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
856 _write_string(self._file, self._compname)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
857 self._file.write('SSND')
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
858 self._ssnd_length_pos = self._file.tell()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
859 _write_long(self._file, self._datalength + 8)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
860 _write_long(self._file, 0)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
861 _write_long(self._file, 0)
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
862
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
863 def _write_form_length(self, datalength):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
864 if self._aifc:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
865 commlength = 18 + 5 + len(self._compname)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
866 if commlength & 1:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
867 commlength = commlength + 1
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
868 verslength = 12
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
869 else:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
870 commlength = 18
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
871 verslength = 0
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
872 _write_long(self._file, 4 + verslength + self._marklength + \
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
873 8 + commlength + 16 + datalength)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
874 return commlength
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
875
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
876 def _patchheader(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
877 curpos = self._file.tell()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
878 if self._datawritten & 1:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
879 datalength = self._datawritten + 1
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
880 self._file.write(chr(0))
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
881 else:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
882 datalength = self._datawritten
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
883 if datalength == self._datalength and \
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
884 self._nframes == self._nframeswritten and \
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
885 self._marklength == 0:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
886 self._file.seek(curpos, 0)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
887 return
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
888 self._file.seek(self._form_length_pos, 0)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
889 dummy = self._write_form_length(datalength)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
890 self._file.seek(self._nframes_pos, 0)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
891 _write_long(self._file, self._nframeswritten)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
892 self._file.seek(self._ssnd_length_pos, 0)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
893 _write_long(self._file, datalength + 8)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
894 self._file.seek(curpos, 0)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
895 self._nframes = self._nframeswritten
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
896 self._datalength = datalength
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
897
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
898 def _writemarkers(self):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
899 if len(self._markers) == 0:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
900 return
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
901 self._file.write('MARK')
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
902 length = 2
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
903 for marker in self._markers:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
904 id, pos, name = marker
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
905 length = length + len(name) + 1 + 6
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
906 if len(name) & 1 == 0:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
907 length = length + 1
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
908 _write_long(self._file, length)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
909 self._marklength = length + 8
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
910 _write_short(self._file, len(self._markers))
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
911 for marker in self._markers:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
912 id, pos, name = marker
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
913 _write_short(self._file, id)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
914 _write_long(self._file, pos)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
915 _write_string(self._file, name)
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
916
11034
b6a438cc195b Make the mode parameter to open() default in the same way as for wave.open().
Fred Drake <fdrake@acm.org>
parents: 10937
diff changeset
917 def open(f, mode=None):
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
918 if mode is None:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
919 if hasattr(f, 'mode'):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
920 mode = f.mode
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
921 else:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
922 mode = 'rb'
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
923 if mode in ('r', 'rb'):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
924 return Aifc_read(f)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
925 elif mode in ('w', 'wb'):
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
926 return Aifc_write(f)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
927 else:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
928 raise Error, "mode must be 'r', 'rb', 'w', or 'wb'"
1192
78428243feaa New module aifc to read and write AIFF-C and AIFF files. See
Sjoerd Mullender <sjoerd@acm.org>
parents:
diff changeset
929
1435
560ec7030817 * Mass change: get rid of all init() methods, in favor of __init__()
Guido van Rossum <guido@python.org>
parents: 1423
diff changeset
930 openfp = open # B/W compatibility
4845
0bdd31538d8f Rewrote _{read,write}_{short,long} to use the newly revamped struct
Guido van Rossum <guido@python.org>
parents: 4078
diff changeset
931
0bdd31538d8f Rewrote _{read,write}_{short,long} to use the newly revamped struct
Guido van Rossum <guido@python.org>
parents: 4078
diff changeset
932 if __name__ == '__main__':
11691
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
933 import sys
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
934 if not sys.argv[1:]:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
935 sys.argv.append('/usr/demos/data/audio/bach.aiff')
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
936 fn = sys.argv[1]
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
937 f = open(fn, 'r')
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
938 print "Reading", fn
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
939 print "nchannels =", f.getnchannels()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
940 print "nframes =", f.getnframes()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
941 print "sampwidth =", f.getsampwidth()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
942 print "framerate =", f.getframerate()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
943 print "comptype =", f.getcomptype()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
944 print "compname =", f.getcompname()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
945 if sys.argv[2:]:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
946 gn = sys.argv[2]
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
947 print "Writing", gn
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
948 g = open(gn, 'w')
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
949 g.setparams(f.getparams())
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
950 while 1:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
951 data = f.readframes(1024)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
952 if not data:
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
953 break
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
954 g.writeframes(data)
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
955 g.close()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
956 f.close()
e34991022571 Mass patch by Ka-Ping Yee:
Guido van Rossum <guido@python.org>
parents: 11227
diff changeset
957 print "Done."