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Based on kernel version 3.9. Page generated on 2013-05-02 23:04 EST.

1	<refentry id="vidioc-dv-timings-cap">
2	  <refmeta>
3	    <refentrytitle>ioctl VIDIOC_DV_TIMINGS_CAP</refentrytitle>
4	    &manvol;
5	  </refmeta>
6	
7	  <refnamediv>
8	    <refname>VIDIOC_DV_TIMINGS_CAP</refname>
9	    <refpurpose>The capabilities of the Digital Video receiver/transmitter</refpurpose>
10	  </refnamediv>
11	
12	  <refsynopsisdiv>
13	    <funcsynopsis>
14	      <funcprototype>
15		<funcdef>int <function>ioctl</function></funcdef>
16		<paramdef>int <parameter>fd</parameter></paramdef>
17		<paramdef>int <parameter>request</parameter></paramdef>
18		<paramdef>struct v4l2_dv_timings_cap *<parameter>argp</parameter></paramdef>
19	      </funcprototype>
20	    </funcsynopsis>
21	  </refsynopsisdiv>
22	
23	  <refsect1>
24	    <title>Arguments</title>
25	
26	    <variablelist>
27	      <varlistentry>
28		<term><parameter>fd</parameter></term>
29		<listitem>
30		  <para>&fd;</para>
31		</listitem>
32	      </varlistentry>
33	      <varlistentry>
34		<term><parameter>request</parameter></term>
35		<listitem>
36		  <para>VIDIOC_DV_TIMINGS_CAP</para>
37		</listitem>
38	      </varlistentry>
39	      <varlistentry>
40		<term><parameter>argp</parameter></term>
41		<listitem>
42		  <para></para>
43		</listitem>
44	      </varlistentry>
45	    </variablelist>
46	  </refsect1>
47	
48	  <refsect1>
49	    <title>Description</title>
50	
51	    <note>
52	      <title>Experimental</title>
53	      <para>This is an <link linkend="experimental"> experimental </link>
54	      interface and may change in the future.</para>
55	    </note>
56	
57	    <para>To query the capabilities of the DV receiver/transmitter applications can call
58	this ioctl and the driver will fill in the structure. Note that drivers may return
59	different values after switching the video input or output.</para>
60	
61	    <table pgwide="1" frame="none" id="v4l2-bt-timings-cap">
62	      <title>struct <structname>v4l2_bt_timings_cap</structname></title>
63	      <tgroup cols="3">
64		&cs-str;
65		<tbody valign="top">
66		  <row>
67		    <entry>__u32</entry>
68		    <entry><structfield>min_width</structfield></entry>
69		    <entry>Minimum width of the active video in pixels.</entry>
70		  </row>
71		  <row>
72		    <entry>__u32</entry>
73		    <entry><structfield>max_width</structfield></entry>
74		    <entry>Maximum width of the active video in pixels.</entry>
75		  </row>
76		  <row>
77		    <entry>__u32</entry>
78		    <entry><structfield>min_height</structfield></entry>
79		    <entry>Minimum height of the active video in lines.</entry>
80		  </row>
81		  <row>
82		    <entry>__u32</entry>
83		    <entry><structfield>max_height</structfield></entry>
84		    <entry>Maximum height of the active video in lines.</entry>
85		  </row>
86		  <row>
87		    <entry>__u64</entry>
88		    <entry><structfield>min_pixelclock</structfield></entry>
89		    <entry>Minimum pixelclock frequency in Hz.</entry>
90		  </row>
91		  <row>
92		    <entry>__u64</entry>
93		    <entry><structfield>max_pixelclock</structfield></entry>
94		    <entry>Maximum pixelclock frequency in Hz.</entry>
95		  </row>
96		  <row>
97		    <entry>__u32</entry>
98		    <entry><structfield>standards</structfield></entry>
99		    <entry>The video standard(s) supported by the hardware.
100		    See <xref linkend="dv-bt-standards"/> for a list of standards.</entry>
101		  </row>
102		  <row>
103		    <entry>__u32</entry>
104		    <entry><structfield>capabilities</structfield></entry>
105		    <entry>Several flags giving more information about the capabilities.
106		    See <xref linkend="dv-bt-cap-capabilities"/> for a description of the flags.
107		    </entry>
108		  </row>
109		  <row>
110		    <entry>__u32</entry>
111		    <entry><structfield>reserved</structfield>[16]</entry>
112		    <entry>Reserved for future extensions. Drivers must set the array to zero.</entry>
113		  </row>
114		</tbody>
115	      </tgroup>
116	    </table>
117	
118	    <table pgwide="1" frame="none" id="v4l2-dv-timings-cap">
119	      <title>struct <structname>v4l2_dv_timings_cap</structname></title>
120	      <tgroup cols="4">
121		&cs-str;
122		<tbody valign="top">
123		  <row>
124		    <entry>__u32</entry>
125		    <entry><structfield>type</structfield></entry>
126		    <entry>Type of DV timings as listed in <xref linkend="dv-timing-types"/>.</entry>
127		  </row>
128		  <row>
129		    <entry>__u32</entry>
130		    <entry><structfield>reserved</structfield>[3]</entry>
131		    <entry>Reserved for future extensions. Drivers must set the array to zero.</entry>
132		  </row>
133		  <row>
134		    <entry>union</entry>
135		    <entry><structfield></structfield></entry>
136		    <entry></entry>
137		  </row>
138		  <row>
139		    <entry></entry>
140		    <entry>&v4l2-bt-timings-cap;</entry>
141		    <entry><structfield>bt</structfield></entry>
142		    <entry>BT.656/1120 timings capabilities of the hardware.</entry>
143		  </row>
144		  <row>
145		    <entry></entry>
146		    <entry>__u32</entry>
147		    <entry><structfield>raw_data</structfield>[32]</entry>
148		    <entry></entry>
149		  </row>
150		</tbody>
151	      </tgroup>
152	    </table>
153	
154	    <table pgwide="1" frame="none" id="dv-bt-cap-capabilities">
155	      <title>DV BT Timing capabilities</title>
156	      <tgroup cols="2">
157		&cs-str;
158		<tbody valign="top">
159		  <row>
160		    <entry>Flag</entry>
161		    <entry>Description</entry>
162		  </row>
163		  <row>
164		    <entry></entry>
165		    <entry></entry>
166		  </row>
167		  <row>
168		    <entry>V4L2_DV_BT_CAP_INTERLACED</entry>
169		    <entry>Interlaced formats are supported.
170		    </entry>
171		  </row>
172		  <row>
173		    <entry>V4L2_DV_BT_CAP_PROGRESSIVE</entry>
174		    <entry>Progressive formats are supported.
175		    </entry>
176		  </row>
177		  <row>
178		    <entry>V4L2_DV_BT_CAP_REDUCED_BLANKING</entry>
179		    <entry>CVT/GTF specific: the timings can make use of reduced blanking (CVT)
180	or the 'Secondary GTF' curve (GTF).
181		    </entry>
182		  </row>
183		  <row>
184		    <entry>V4L2_DV_BT_CAP_CUSTOM</entry>
185		    <entry>Can support non-standard timings, i.e. timings not belonging to the
186	standards set in the <structfield>standards</structfield> field.
187		    </entry>
188		  </row>
189		</tbody>
190	      </tgroup>
191	    </table>
192	  </refsect1>
193	
194	  <refsect1>
195	    &return-value;
196	  </refsect1>
197	</refentry>
198	
199	<!--
200	Local Variables:
201	mode: sgml
202	sgml-parent-document: "v4l2.sgml"
203	indent-tabs-mode: nil
204	End:
205	-->
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