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[media] DocBook/media: document the new RDS TX controls
Document the new RDS features that will be supported by the si4713 driver. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Cc: Eduardo Valentin <edubezval@gmail.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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@ -4049,6 +4049,68 @@ in Annex E of <xref linkend="iec62106" />. The length of Radio Text strings depe
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used to transmit it, either 32 (2A block) or 64 (2B block). However, it is also possible
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to find receivers which can scroll strings sized as 32 x N or 64 x N characters. So, this control must be configured
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with steps of 32 or 64 characters. The result is it must always contain a string with size multiple of 32 or 64. </entry>
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</row>
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<row>
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<entry spanname="id"><constant>V4L2_CID_RDS_TX_MONO_STEREO</constant> </entry>
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<entry>boolean</entry>
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</row>
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<row><entry spanname="descr">Sets the Mono/Stereo bit of the Decoder Identification code. If set,
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then the audio was recorded as stereo.</entry>
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</row>
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<row>
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<entry spanname="id"><constant>V4L2_CID_RDS_TX_ARTIFICIAL_HEAD</constant> </entry>
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<entry>boolean</entry>
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</row>
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<row><entry spanname="descr">Sets the
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<ulink url="http://en.wikipedia.org/wiki/Artificial_head">Artificial Head</ulink> bit of the Decoder
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Identification code. If set, then the audio was recorded using an artificial head.</entry>
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</row>
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<row>
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<entry spanname="id"><constant>V4L2_CID_RDS_TX_COMPRESSED</constant> </entry>
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<entry>boolean</entry>
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</row>
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<row><entry spanname="descr">Sets the Compressed bit of the Decoder Identification code. If set,
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then the audio is compressed.</entry>
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</row>
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<row>
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<entry spanname="id"><constant>V4L2_CID_RDS_TX_DYNAMIC_PTY</constant> </entry>
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<entry>boolean</entry>
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</row>
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<row><entry spanname="descr">Sets the Dynamic PTY bit of the Decoder Identification code. If set,
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then the PTY code is dynamically switched.</entry>
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</row>
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<row>
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<entry spanname="id"><constant>V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT</constant> </entry>
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<entry>boolean</entry>
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</row>
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<row><entry spanname="descr">If set, then a traffic announcement is in progress.</entry>
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</row>
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<row>
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<entry spanname="id"><constant>V4L2_CID_RDS_TX_TRAFFIC_PROGRAM</constant> </entry>
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<entry>boolean</entry>
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</row>
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<row><entry spanname="descr">If set, then the tuned programme carries traffic announcements.</entry>
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</row>
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<row>
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<entry spanname="id"><constant>V4L2_CID_RDS_TX_MUSIC_SPEECH</constant> </entry>
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<entry>boolean</entry>
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</row>
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<row><entry spanname="descr">If set, then this channel broadcasts music. If cleared, then it
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broadcasts speech. If the transmitter doesn't make this distinction, then it should be set.</entry>
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</row>
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<row>
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<entry spanname="id"><constant>V4L2_CID_RDS_TX_ALT_FREQS_ENABLE</constant> </entry>
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<entry>boolean</entry>
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</row>
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<row><entry spanname="descr">If set, then transmit alternate frequencies.</entry>
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</row>
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<row>
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<entry spanname="id"><constant>V4L2_CID_RDS_TX_ALT_FREQS</constant> </entry>
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<entry>__u32 array</entry>
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</row>
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<row><entry spanname="descr">The alternate frequencies in kHz units. The RDS standard allows
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for up to 25 frequencies to be defined. Drivers may support fewer frequencies so check
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the array size.</entry>
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</row>
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<row>
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<entry spanname="id"><constant>V4L2_CID_AUDIO_LIMITER_ENABLED</constant> </entry>
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