diff options
Diffstat (limited to 'Documentation/DocBook/media/v4l/controls.xml')
| -rw-r--r-- | Documentation/DocBook/media/v4l/controls.xml | 87 |
1 files changed, 86 insertions, 1 deletions
diff --git a/Documentation/DocBook/media/v4l/controls.xml b/Documentation/DocBook/media/v4l/controls.xml index 9e8f85498678..8d7a77928d49 100644 --- a/Documentation/DocBook/media/v4l/controls.xml +++ b/Documentation/DocBook/media/v4l/controls.xml @@ -2300,6 +2300,12 @@ Possible values are:</entry> </row> <row><entry></entry></row> <row> + <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER</constant> </entry> + <entry>boolean</entry> + </row><row><entry spanname="descr">Repeat the video sequence headers. Repeating these +headers makes random access to the video stream easier. Applicable to the MPEG1, 2 and 4 encoder.</entry> + </row> + <row> <entry spanname="id"><constant>V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER</constant> </entry> <entry>boolean</entry> </row><row><entry spanname="descr">Enabled the deblocking post processing filter for MPEG4 decoder. @@ -3136,6 +3142,13 @@ giving priority to the center of the metered area.</entry> <entry><constant>V4L2_EXPOSURE_METERING_SPOT</constant> </entry> <entry>Measure only very small area at the center of the frame.</entry> </row> + <row> + <entry><constant>V4L2_EXPOSURE_METERING_MATRIX</constant> </entry> + <entry>A multi-zone metering. The light intensity is measured +in several points of the frame and the the results are combined. The +algorithm of the zones selection and their significance in calculating the +final value is device dependant.</entry> + </row> </tbody> </entrytbl> </row> @@ -3848,7 +3861,7 @@ in Hz. The range and step are driver-specific.</entry> </row> <row> <entry spanname="id"><constant>V4L2_CID_TUNE_PREEMPHASIS</constant> </entry> - <entry>integer</entry> + <entry>enum v4l2_preemphasis</entry> </row> <row id="v4l2-preemphasis"><entry spanname="descr">Configures the pre-emphasis value for broadcasting. A pre-emphasis filter is applied to the broadcast to accentuate the high audio frequencies. @@ -4687,4 +4700,76 @@ interface and may change in the future.</para> </table> </section> + + <section id="fm-rx-controls"> + <title>FM Receiver Control Reference</title> + + <para>The FM Receiver (FM_RX) class includes controls for common features of + FM Reception capable devices.</para> + + <table pgwide="1" frame="none" id="fm-rx-control-id"> + <title>FM_RX Control IDs</title> + + <tgroup cols="4"> + <colspec colname="c1" colwidth="1*" /> + <colspec colname="c2" colwidth="6*" /> + <colspec colname="c3" colwidth="2*" /> + <colspec colname="c4" colwidth="6*" /> + <spanspec namest="c1" nameend="c2" spanname="id" /> + <spanspec namest="c2" nameend="c4" spanname="descr" /> + <thead> + <row> + <entry spanname="id" align="left">ID</entry> + <entry align="left">Type</entry> + </row><row rowsep="1"><entry spanname="descr" align="left">Description</entry> + </row> + </thead> + <tbody valign="top"> + <row><entry></entry></row> + <row> + <entry spanname="id"><constant>V4L2_CID_FM_RX_CLASS</constant> </entry> + <entry>class</entry> + </row><row><entry spanname="descr">The FM_RX class +descriptor. Calling &VIDIOC-QUERYCTRL; for this control will return a +description of this control class.</entry> + </row> + <row> + <entry spanname="id"><constant>V4L2_CID_RDS_RECEPTION</constant> </entry> + <entry>boolean</entry> + </row><row><entry spanname="descr">Enables/disables RDS + reception by the radio tuner</entry> + </row> + <row> + <entry spanname="id"><constant>V4L2_CID_TUNE_DEEMPHASIS</constant> </entry> + <entry>enum v4l2_deemphasis</entry> + </row> + <row id="v4l2-deemphasis"><entry spanname="descr">Configures the de-emphasis value for reception. +A de-emphasis filter is applied to the broadcast to accentuate the high audio frequencies. +Depending on the region, a time constant of either 50 or 75 useconds is used. The enum v4l2_deemphasis +defines possible values for de-emphasis. Here they are:</entry> + </row><row> + <entrytbl spanname="descr" cols="2"> + <tbody valign="top"> + <row> + <entry><constant>V4L2_DEEMPHASIS_DISABLED</constant> </entry> + <entry>No de-emphasis is applied.</entry> + </row> + <row> + <entry><constant>V4L2_DEEMPHASIS_50_uS</constant> </entry> + <entry>A de-emphasis of 50 uS is used.</entry> + </row> + <row> + <entry><constant>V4L2_DEEMPHASIS_75_uS</constant> </entry> + <entry>A de-emphasis of 75 uS is used.</entry> + </row> + </tbody> + </entrytbl> + + </row> + <row><entry></entry></row> + </tbody> + </tgroup> + </table> + + </section> </section> |