diff options
Diffstat (limited to 'include/media/media-entity.h')
| -rw-r--r-- | include/media/media-entity.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 3aa3d58d1d58..b7a53f5d3e12 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -156,11 +156,40 @@ struct media_link { }; /** + * enum media_pad_signal_type - type of the signal inside a media pad + * + * @PAD_SIGNAL_DEFAULT: + * Default signal. Use this when all inputs or all outputs are + * uniquely identified by the pad number. + * @PAD_SIGNAL_ANALOG: + * The pad contains an analog signal. It can be Radio Frequency, + * Intermediate Frequency, a baseband signal or sub-cariers. + * Tuner inputs, IF-PLL demodulators, composite and s-video signals + * should use it. + * @PAD_SIGNAL_DV: + * Contains a digital video signal, with can be a bitstream of samples + * taken from an analog TV video source. On such case, it usually + * contains the VBI data on it. + * @PAD_SIGNAL_AUDIO: + * Contains an Intermediate Frequency analog signal from an audio + * sub-carrier or an audio bitstream. IF signals are provided by tuners + * and consumed by audio AM/FM decoders. Bitstream audio is provided by + * an audio decoder. + */ +enum media_pad_signal_type { + PAD_SIGNAL_DEFAULT = 0, + PAD_SIGNAL_ANALOG, + PAD_SIGNAL_DV, + PAD_SIGNAL_AUDIO, +}; + +/** * struct media_pad - A media pad graph object. * * @graph_obj: Embedded structure containing the media object common data * @entity: Entity this pad belongs to * @index: Pad index in the entity pads array, numbered from 0 to n + * @sig_type: Type of the signal inside a media pad * @flags: Pad flags, as defined in * :ref:`include/uapi/linux/media.h <media_header>` * (seek for ``MEDIA_PAD_FL_*``) @@ -169,6 +198,7 @@ struct media_pad { struct media_gobj graph_obj; /* must be first field in struct */ struct media_entity *entity; u16 index; + enum media_pad_signal_type sig_type; unsigned long flags; }; |