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Initial commit of OpenSPARC T2 design and verification files.
[OpenSPARC-T2-DV] / tools / src / nas,5.n2.os.2 / lib / python / html / python / lib / au-write-objects.html
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54<H2><A NAME="SECTION0016420000000000000000"></A><A NAME="au-write-objects"></A>
55<BR>
5614.4.2 AU_write Objects
57</H2>
58
59<P>
60AU_write objects, as returned by <tt class="function">open()</tt> above, have the
61following methods:
62
63<P>
64<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
65 <td><nobr><b><tt id='l2h-4697' xml:id='l2h-4697' class="method">setnchannels</tt></b>(</nobr></td>
66 <td><var>n</var>)</td></tr></table></dt>
67<dd>
68Set the number of channels.
69</dl>
70
71<P>
72<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
73 <td><nobr><b><tt id='l2h-4698' xml:id='l2h-4698' class="method">setsampwidth</tt></b>(</nobr></td>
74 <td><var>n</var>)</td></tr></table></dt>
75<dd>
76Set the sample width (in bytes.)
77</dl>
78
79<P>
80<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
81 <td><nobr><b><tt id='l2h-4699' xml:id='l2h-4699' class="method">setframerate</tt></b>(</nobr></td>
82 <td><var>n</var>)</td></tr></table></dt>
83<dd>
84Set the frame rate.
85</dl>
86
87<P>
88<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
89 <td><nobr><b><tt id='l2h-4700' xml:id='l2h-4700' class="method">setnframes</tt></b>(</nobr></td>
90 <td><var>n</var>)</td></tr></table></dt>
91<dd>
92Set the number of frames. This can be later changed, when and if more
93frames are written.
94</dl>
95
96<P>
97<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
98 <td><nobr><b><tt id='l2h-4701' xml:id='l2h-4701' class="method">setcomptype</tt></b>(</nobr></td>
99 <td><var>type, name</var>)</td></tr></table></dt>
100<dd>
101Set the compression type and description.
102Only <code>'NONE'</code> and <code>'ULAW'</code> are supported on output.
103</dl>
104
105<P>
106<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
107 <td><nobr><b><tt id='l2h-4702' xml:id='l2h-4702' class="method">setparams</tt></b>(</nobr></td>
108 <td><var>tuple</var>)</td></tr></table></dt>
109<dd>
110The <var>tuple</var> should be <code>(<var>nchannels</var>, <var>sampwidth</var>,
111<var>framerate</var>, <var>nframes</var>, <var>comptype</var>, <var>compname</var>)</code>, with
112values valid for the <tt class="method">set*()</tt> methods. Set all parameters.
113</dl>
114
115<P>
116<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
117 <td><nobr><b><tt id='l2h-4703' xml:id='l2h-4703' class="method">tell</tt></b>(</nobr></td>
118 <td><var></var>)</td></tr></table></dt>
119<dd>
120Return current position in the file, with the same disclaimer for
121the <tt class="method">AU_read.tell()</tt> and <tt class="method">AU_read.setpos()</tt> methods.
122</dl>
123
124<P>
125<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
126 <td><nobr><b><tt id='l2h-4704' xml:id='l2h-4704' class="method">writeframesraw</tt></b>(</nobr></td>
127 <td><var>data</var>)</td></tr></table></dt>
128<dd>
129Write audio frames, without correcting <var>nframes</var>.
130</dl>
131
132<P>
133<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
134 <td><nobr><b><tt id='l2h-4705' xml:id='l2h-4705' class="method">writeframes</tt></b>(</nobr></td>
135 <td><var>data</var>)</td></tr></table></dt>
136<dd>
137Write audio frames and make sure <var>nframes</var> is correct.
138</dl>
139
140<P>
141<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
142 <td><nobr><b><tt id='l2h-4706' xml:id='l2h-4706' class="method">close</tt></b>(</nobr></td>
143 <td><var></var>)</td></tr></table></dt>
144<dd>
145Make sure <var>nframes</var> is correct, and close the file.
146
147<P>
148This method is called upon deletion.
149</dl>
150
151<P>
152Note that it is invalid to set any parameters after calling
153<tt class="method">writeframes()</tt> or <tt class="method">writeframesraw()</tt>.
154
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Full OpenSPARC design & verification tarball including full HDL.