Hello, On Friday 11 September 2015 15:13:30 Hans Verkuil wrote: > On 09/06/2015 02:03 PM, Mauro Carvalho Chehab wrote: > > Cleanup the media controller entities description: > > - remove MEDIA_ENT_T_DEVNODE and MEDIA_ENT_T_V4L2_SUBDEV entity > > types, as they don't mean anything; > > - add MEDIA_ENT_T_UNKNOWN with a proper description; > > - remove ALSA and FB entity types. Those should not be used, as > > the types are deprecated. We'll soon be adidng ALSA, but with > > a different entity namespace; > > - improve the description of some entities. > > > > Signed-off-by: Mauro Carvalho Chehab <mche...@osg.samsung.com> > > > > diff --git a/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml > > b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml index > > 32a783635649..bc101516e372 100644 > > --- a/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml > > +++ b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml > > @@ -179,70 +179,65 @@ > > <colspec colname="c2"/> > > <tbody valign="top"> > > <row> > > - <entry><constant>MEDIA_ENT_T_DEVNODE</constant></entry> > > - <entry>Unknown device node</entry> > > + <entry><constant>MEDIA_ENT_T_UNKNOWN</constant> and > > <constant>MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN</constant></entry> + > > <entry>Unknown entity. That generally indicates that > > + a driver didn't initialize properly the entity, with is a Kernel > > bug</entry>> > > </row> > > I'm wondering: if userspace should never see an unknown entity, wouldn't it > be better to move these UNKNOWN defines out of the public header to a kernel > header and drop this from the documentation?
And shouldn't the bug be caught in kernelspace before it reaches the user ? > > <row> > > <entry><constant>MEDIA_ENT_T_V4L2_VIDEO</constant></entry> > > - <entry>V4L video, radio or vbi device node</entry> > > + <entry>V4L video streaming input or output entity</entry> > > </row> > > - <row> > > - <entry><constant>MEDIA_ENT_T_DEVNODE_FB</constant></entry> > > - <entry>Frame buffer device node</entry> > > + <entry><constant>MEDIA_ENT_T_V4L2_VBI</constant></entry> > > + <entry>V4L VBI streaming input or output entity</entry> > > </row> > > - <row> > > - <entry><constant>MEDIA_ENT_T_DEVNODE_ALSA</constant></entry> > > - <entry>ALSA card</entry> > > + <entry><constant>MEDIA_ENT_T_V4L2_SWRADIO</constant></entry> > > + <entry>V4L Sofware Digital Radio (SDR) streaming input or output > > entity</entry> > > s/Sofware/Software/ > > > </row> > > <row> > > <entry><constant>MEDIA_ENT_T_DVB_DEMOD</constant></entry> > > - <entry>DVB frontend devnode</entry> > > + <entry>DVB demodulator entity</entry> > > </row> > > <row> > > <entry><constant>MEDIA_ENT_T_DVB_DEMUX</constant></entry> > > - <entry>DVB demux devnode</entry> > > + <entry>DVB demux entity. Could be implemented on hardware or in > > Kernelspace</entry> s/Could be/Can be/ > s/on/in/ > > > </row> > > <row> > > <entry><constant>MEDIA_ENT_T_DVB_TSOUT</constant></entry> > > - <entry>DVB DVR devnode</entry> > > + <entry>DVB Transport Stream output entity</entry> > > </row> > > <row> > > <entry><constant>MEDIA_ENT_T_DVB_CA</constant></entry> > > - <entry>DVB CAM devnode</entry> > > + <entry>DVB Conditional Access module (CAM) entity</entry> > > </row> > > <row> > > <entry><constant>MEDIA_ENT_T_DVB_DEMOD_NET_DECAP</constant></entry> > > - <entry>DVB network devnode</entry> > > - </row> > > - <row> > > - <entry><constant>MEDIA_ENT_T_V4L2_SUBDEV</constant></entry> > > - <entry>Unknown V4L sub-device</entry> > > + <entry>DVB network ULE/MLE desencapsulation entity. Could be > > implemented on hardware or in Kernelspace</entry> s/Could be/Can be/ > s/on/in/ > > Hmm, is desencapsulation correct? Could it be 'de-encapsulation' instead? It > looks weird. > > > </row> > > <row> > > <entry><constant>MEDIA_ENT_T_V4L2_SUBDEV_SENSOR</constant></entry> > > - <entry>Video sensor</entry> > > + <entry>Camera video sensor entity</entry> s/video sensor/image sensor/ > > </row> > > <row> > > <entry><constant>MEDIA_ENT_T_V4L2_SUBDEV_FLASH</constant></entry> > > - <entry>Flash controller</entry> > > + <entry>Flash controller entity</entry> > > </row> > > <row> > > <entry><constant>MEDIA_ENT_T_V4L2_SUBDEV_LENS</constant></entry> > > - <entry>Lens controller</entry> > > + <entry>Lens controller entity</entry> > > </row> > > <row> > > <entry><constant>MEDIA_ENT_T_V4L2_SUBDEV_DECODER</constant></entry> > > - <entry>Video decoder, the basic function of the video decoder is to > > - accept analogue video from a wide variety of sources such as > > + <entry>Analog video decoder, the basic function of the video decoder > > + is to accept analogue video from a wide variety of sources such as > > broadcast, DVD players, cameras and video cassette recorders, in > > - either NTSC, PAL or HD format and still occasionally SECAM, separate > > - it into its component parts, luminance and chrominance, and output > > + either NTSC, PAL, SECAM or HD format, separating the stream > > + into its component parts, luminance and chrominance, and output > > it in some digital video standard, with appropriate embedded timing > > signals.</entry> Does timing signals refer to synchronization signals ? They don't have to be embedded, do they ? > > </row> > > <row> > > <entry><constant>MEDIA_ENT_T_V4L2_SUBDEV_TUNER</constant></entry> > > - <entry>TV and/or radio tuner</entry> > > + <entry>Digital TV, analog TV, radio and/or software radio > > tuner</entry>> > > </row> > > </tbody> > > </tgroup> -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
