diff options
| -rw-r--r-- | Documentation/DocBook/media/dvb/demux.xml | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/Documentation/DocBook/media/dvb/demux.xml b/Documentation/DocBook/media/dvb/demux.xml index 86de89cfbd67..c8683d66f059 100644 --- a/Documentation/DocBook/media/dvb/demux.xml +++ b/Documentation/DocBook/media/dvb/demux.xml @@ -1042,7 +1042,14 @@ role="subsection"><title>DMX_ADD_PID</title> </para> <informaltable><tgroup cols="1"><tbody><row><entry align="char"> -<para>This ioctl is undocumented. Documentation is welcome.</para> +<para>This ioctl call allows to add multiple PIDs to a transport stream filter +previously set up with DMX_SET_PES_FILTER and output equal to DMX_OUT_TSDEMUX_TAP. +</para></entry></row><row><entry align="char"><para> +It is used by readers of /dev/dvb/adapterX/demuxY. +</para></entry></row><row><entry align="char"><para> +It may be called at any time, i.e. before or after the first filter on the +shared file descriptor was started. It makes it possible to record multiple +services without the need to de-multiplex or re-multiplex TS packets.</para> </entry> </row></tbody></tgroup></informaltable> <para>SYNOPSIS @@ -1075,7 +1082,7 @@ role="subsection"><title>DMX_ADD_PID</title> </para> </entry><entry align="char"> -<para>Undocumented.</para> +<para>PID number to be filtered.</para> </entry> </row></tbody></tgroup></informaltable> &return-value-dvb; @@ -1087,7 +1094,15 @@ role="subsection"><title>DMX_REMOVE_PID</title> </para> <informaltable><tgroup cols="1"><tbody><row><entry align="char"> -<para>This ioctl is undocumented. Documentation is welcome.</para> +<para>This ioctl call allows to remove a PID when multiple PIDs are set on a +transport stream filter, e. g. a filter previously set up with output equal to +DMX_OUT_TSDEMUX_TAP, created via either DMX_SET_PES_FILTER or DMX_ADD_PID. +</para></entry></row><row><entry align="char"><para> +It is used by readers of /dev/dvb/adapterX/demuxY. +</para></entry></row><row><entry align="char"><para> +It may be called at any time, i.e. before or after the first filter on the +shared file descriptor was started. It makes it possible to record multiple +services without the need to de-multiplex or re-multiplex TS packets.</para> </entry> </row></tbody></tgroup></informaltable> <para>SYNOPSIS @@ -1120,7 +1135,7 @@ role="subsection"><title>DMX_REMOVE_PID</title> </para> </entry><entry align="char"> -<para>Undocumented.</para> +<para>PID of the PES filter to be removed.</para> </entry> </row></tbody></tgroup></informaltable> &return-value-dvb; |