gstreamer0.10-plugins-bad-doc 0.10.23-7.2ubuntu1 / usr / share / gtk-doc / html / gst-plugins-bad-plugins-0.10 / gst-plugins-bad-plugins-scaletempo.html

This file is indexed.

/usr/share/gtk-doc/html/gst-plugins-bad-plugins-0.10/gst-plugins-bad-plugins-scaletempo.html is in gstreamer0.10-plugins-bad-doc 0.10.23-7.2ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below. 

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>GStreamer Bad Plugins 0.10 Plugins Reference Manual: scaletempo</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<link rel="home" href="index.html" title="GStreamer Bad Plugins 0.10 Plugins Reference Manual">
<link rel="up" href="ch01.html" title="gst-plugins-bad Elements">
<link rel="prev" href="gst-plugins-bad-plugins-rtpmux.html" title="rtpmux">
<link rel="next" href="gst-plugins-bad-plugins-sdlaudiosink.html" title="sdlaudiosink">
<meta name="generator" content="GTK-Doc V1.20 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="10"><tr valign="middle">
<td width="100%" align="left" class="shortcuts">
<a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span> 
                  <a href="#gst-plugins-bad-plugins-scaletempo.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> 
                  <a href="#gst-plugins-bad-plugins-scaletempo.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_properties"> <span class="dim">|</span> 
                  <a href="#gst-plugins-bad-plugins-scaletempo.properties" class="shortcut">Properties</a></span>
</td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="ch01.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="gst-plugins-bad-plugins-rtpmux.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="gst-plugins-bad-plugins-sdlaudiosink.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="gst-plugins-bad-plugins-scaletempo"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-bad-plugins-scaletempo.top_of_page"></a>scaletempo</span></h2>
<p>scaletempo — Sync audio tempo with playback rate</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-scaletempo.properties"></a><h2>Properties</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="properties_type">
<col width="300px" class="properties_name">
<col width="200px" class="properties_flags">
</colgroup>
<tbody>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-bad-plugins-scaletempo.html#GstScaletempo--overlap" title="The “overlap” property">overlap</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-bad-plugins-scaletempo.html#GstScaletempo--rate" title="The “rate” property">rate</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-bad-plugins-scaletempo.html#GstScaletempo--search" title="The “search” property">search</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-bad-plugins-scaletempo.html#GstScaletempo--stride" title="The “stride” property">stride</a></td>
<td class="property_flags">Read / Write</td>
</tr>
</tbody>
</table></div>
</div>
<a name="GstScaletempo"></a><div class="refsect1">
<a name="gst-plugins-bad-plugins-scaletempo.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody><tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gst-plugins-bad-plugins-scaletempo.html#GstScaletempo-struct" title="struct GstScaletempo">GstScaletempo</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-scaletempo.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a>
    <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstObject.html">GstObject</a>
        <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html">GstElement</a>
            <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-libs-0.10/GstBaseTransform.html">GstBaseTransform</a>
                <span class="lineart">╰──</span> GstScaletempo
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-scaletempo.description"></a><h2>Description</h2>
<p>Scale tempo while maintaining pitch
(WSOLA-like technique with cross correlation)
Inspired by SoundTouch library by Olli Parviainen</p>
<p>Use Sceletempo to apply playback rates without the chipmunk effect.</p>
<div class="refsect2">
<a name="id-1.2.80.7.4"></a><h3>Example pipelines</h3>
<p>
</p>
<div class="informalexample"><pre class="programlisting">
filesrc location=media.ext ! decodebin name=d \
    d. ! queue ! audioconvert ! audioresample ! scaletempo ! audioconvert ! audioresample ! autoaudiosink \
    d. ! queue ! ffmpegcolorspace ! autovideosink
</pre></div>
<p>
OR
</p>
<div class="informalexample"><pre class="programlisting">
playbin uri=... audio_sink="scaletempo ! audioconvert ! audioresample ! autoaudiosink"
</pre></div>
<p>
When an application sends a seek event with rate != 1.0, Scaletempo applies
the rate change by scaling the tempo without scaling the pitch.

Scaletempo works by producing audio in constant sized chunks
(<a class="link" href="gst-plugins-bad-plugins-scaletempo.html#GstScaletempo--stride" title="The “stride” property"><span class="type">“stride”</span></a>) but consuming chunks proportional to the playback
rate.

Scaletempo then smooths the output by blending the end of one stride with
the next (<a class="link" href="gst-plugins-bad-plugins-scaletempo.html#GstScaletempo--overlap" title="The “overlap” property"><span class="type">“overlap”</span></a>).

Scaletempo smooths the overlap further by searching within the input buffer
for the best overlap position.  Scaletempo uses a statistical cross
correlation (roughly a dot-product).  Scaletempo consumes most of its CPU
cycles here. One can use the <a class="link" href="gst-plugins-bad-plugins-scaletempo.html#GstScaletempo--search" title="The “search” property"><span class="type">“search”</span></a> propery to tune how far
the algoritm looks.
</p>
</div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="id-1.2.80.7.5.1"></a><h3>Element Information</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">plugin</span></p></td>
<td>
            <a class="link" href="gst-plugins-bad-plugins-plugin-scaletempo.html#plugin-scaletempo">scaletempo</a>
          </td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>Rov Juvano &lt;rovjuvano@users.sourceforge.net&gt;</td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Filter/Effect/Rate</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="id-1.2.80.7.5.2"></a><h3>Element Pads</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>audio/x-raw-float, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)32</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)16, depth=(int)16, signed=(boolean)true</td>
</tr>
</tbody>
</table></div>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>src</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>source</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>audio/x-raw-float, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)32</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int)1234, width=(int)16, depth=(int)16, signed=(boolean)true</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<p>
</p>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-scaletempo.functions_details"></a><h2>Functions</h2>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-scaletempo.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstScaletempo-struct"></a><h3>struct GstScaletempo</h3>
<pre class="programlisting">struct GstScaletempo;</pre>
<p>
</p>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-bad-plugins-scaletempo.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstScaletempo--overlap"></a><h3>The <code class="literal">“overlap”</code> property</h3>
<pre class="programlisting">  “overlap”                  <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a></pre>
<p>Percentage of stride to overlap.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: [0,1]</p>
<p>Default value: 0.2</p>
</div>
<hr>
<div class="refsect2">
<a name="GstScaletempo--rate"></a><h3>The <code class="literal">“rate”</code> property</h3>
<pre class="programlisting">  “rate”                     <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a></pre>
<p>Current playback rate.</p>
<p>Flags: Read</p>
<p>Allowed values: [-2.14748e+09,2.14748e+09]</p>
<p>Default value: 1</p>
</div>
<hr>
<div class="refsect2">
<a name="GstScaletempo--search"></a><h3>The <code class="literal">“search”</code> property</h3>
<pre class="programlisting">  “search”                   <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre>
<p>Length in milliseconds to search for best overlap position.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: &lt;= 500</p>
<p>Default value: 14</p>
</div>
<hr>
<div class="refsect2">
<a name="GstScaletempo--stride"></a><h3>The <code class="literal">“stride”</code> property</h3>
<pre class="programlisting">  “stride”                   <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a></pre>
<p>Length in milliseconds to output each stride.</p>
<p>Flags: Read / Write</p>
<p>Allowed values: [1,5000]</p>
<p>Default value: 30</p>
</div>
</div>
</div>
<div class="footer">
<hr>
          Generated by GTK-Doc V1.20</div>
</body>
</html>

APT Browse - Built by Thomas Orozco.