diff options
Diffstat (limited to 'v4l2-spec/dev-raw-vbi.sgml')
| -rw-r--r-- | v4l2-spec/dev-raw-vbi.sgml | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/v4l2-spec/dev-raw-vbi.sgml b/v4l2-spec/dev-raw-vbi.sgml index 39d814c44..c5a70bdfa 100644 --- a/v4l2-spec/dev-raw-vbi.sgml +++ b/v4l2-spec/dev-raw-vbi.sgml @@ -121,7 +121,7 @@ relative to the leading edge of the line synchronization pulse and counted in samples: The first sample in the VBI image will be located <structfield>offset</structfield> / <structfield>sampling_rate</structfield> seconds following the leading -edge. See also <xref linkend="vbi-hsync">.</para></entry> +edge. See also <xref linkend="vbi-hsync" />.</para></entry> </row> <row> <entry>__u32</entry> @@ -132,7 +132,7 @@ edge. See also <xref linkend="vbi-hsync">.</para></entry> <entry>__u32</entry> <entry><structfield>sample_format</structfield></entry> <entry><para>Defines the sample format as in <xref -linkend="pixfmt">, a four-character-code.<footnote> +linkend="pixfmt" />, a four-character-code.<footnote> <para>A few devices may be unable to sample VBI data at all but can extend the video capture window to the VBI region.</para> @@ -149,8 +149,8 @@ signal. Drivers shall not convert the sample format by software.</para></entry> <entry><structfield>start</structfield>[2]</entry> <entry>This is the scanning system line number associated with the first line of the VBI image, of the first and the -second field respectively. See <xref linkend="vbi-525"> and -<xref linkend="vbi-625"> for valid values. VBI input drivers can +second field respectively. See <xref linkend="vbi-525" /> and +<xref linkend="vbi-625" /> for valid values. VBI input drivers can return start values 0 if the hardware cannot reliable identify scanning lines, VBI acquisition may not require this information.</entry> @@ -174,8 +174,8 @@ corresponding start value shall be ignored by the application and driver. Anyway, drivers may not support single field capturing and return both count values non-zero.</para><para>Both <structfield>count</structfield> values set to zero, or line numbers -outside the bounds depicted in <xref linkend="vbi-525"> and <xref - linkend="vbi-625">, or a field image covering +outside the bounds depicted in <xref linkend="vbi-525" /> and <xref + linkend="vbi-625" />, or a field image covering lines of two fields, are invalid and shall not be returned by the driver.</para><para>To initialize the <structfield>start</structfield> and <structfield>count</structfield> fields, applications must first @@ -186,7 +186,7 @@ be evaluated for this purpose.</para></entry> <row> <entry>__u32</entry> <entry><structfield>flags</structfield></entry> - <entry>See <xref linkend="vbifmt-flags"> below. Currently + <entry>See <xref linkend="vbifmt-flags" /> below. Currently only drivers set flags, applications must set this field to zero.</entry> </row> @@ -226,7 +226,7 @@ cannot be reliable decoded or encoded when <entry>0x0002</entry> <entry>By default the two field images will be passed sequentially; all lines of the first field followed by all lines of -the second field (compare <xref linkend="field-order"> +the second field (compare <xref linkend="field-order" /> <constant>V4L2_FIELD_SEQ_TB</constant> and <constant>V4L2_FIELD_SEQ_BT</constant>, whether the top or bottom field is first in memory depends on the video standard). When this @@ -247,10 +247,10 @@ the same time. For simplicity setting this flag implies that both <title>Line synchronization</title> <mediaobject> <imageobject> - <imagedata fileref="vbi_hsync.pdf" format="PS"> + <imagedata fileref="vbi_hsync.pdf" format="PS" /> </imageobject> <imageobject> - <imagedata fileref="vbi_hsync.gif" format="GIF"> + <imagedata fileref="vbi_hsync.gif" format="GIF" /> </imageobject> <textobject> <phrase>Line synchronization diagram</phrase> @@ -262,10 +262,10 @@ the same time. For simplicity setting this flag implies that both <title>ITU-R 525 line numbering (M/NTSC and M/PAL)</title> <mediaobject> <imageobject> - <imagedata fileref="vbi_525.pdf" format="PS"> + <imagedata fileref="vbi_525.pdf" format="PS" /> </imageobject> <imageobject> - <imagedata fileref="vbi_525.gif" format="GIF"> + <imagedata fileref="vbi_525.gif" format="GIF" /> </imageobject> <textobject> <phrase>NTSC field synchronization diagram</phrase> @@ -282,10 +282,10 @@ supported.</para> <title>ITU-R 625 line numbering</title> <mediaobject> <imageobject> - <imagedata fileref="vbi_625.pdf" format="PS"> + <imagedata fileref="vbi_625.pdf" format="PS" /> </imageobject> <imageobject> - <imagedata fileref="vbi_625.gif" format="GIF"> + <imagedata fileref="vbi_625.gif" format="GIF" /> </imageobject> <textobject> <phrase>PAL/SECAM field synchronization diagram</phrase> |