----gggguuuuiiii - Brings up a graphical interface with which to create video format
combinations. If this option is specified in conjunction with other
options which modify the combination, the other operations are performed
first, and the gui may be used to make additional modifications. This
option may not be specified with ----ddddeeeessssttttiiiinnnnaaaattttiiiioooonnnn. If no destination is
specified, and no queries are made to the combination, the graphical
interface is used by default.
The following options modify the specified video format combination, or
query parameters of the combination and return them on stdout.
----gggglllloooobbbbaaaallll [[[[ppppaaaarrrraaaammmmeeeetttteeeerrrr||||ppppaaaarrrraaaammmmeeeetttteeeerrrr====vvvvaaaalllluuuueeee,,,,............]]]] - Modifies or queries the global
attributes of the video format combination. This option is followed by a
list of parameters or parameter assignments. If no assignment is made,
the current setting of the parameter in the modified combination is
queried and returned on stdout. Parameters may be specified multiple
times in order to both set and query a parameter. Since commas delimit
parameters in this list, they not used in _v_a_l_u_e. The following
parameters may be specified:
ggggaaaammmmmmmmaaaa====<_v_a_l_u_e> - Specifies the global output video gamma value for
this combination. If the gggglllloooobbbbaaaallllggggaaaammmmmmmmaaaa parameter is OOOONNNN, this gamma
value is used for all channels in the combination. Valid values for
gamma are floating point numbers in the range [0,20], and the
default is 1.7. Setting this parameter modifies the gamma values on
all components of the output. To modify the gamma value of a single
component, use one of the options ggggaaaammmmmmmmaaaarrrr, ggggaaaammmmmmmmaaaagggg, or ggggaaaammmmmmmmaaaabbbb.
gggglllloooobbbbaaaallllggggaaaammmmmmmmaaaa==== [OOOONNNN|OOOOFFFFFFFF] - Specifies whether the global gamma value is
used as the output video gamma for all channels in the combination.
The DG4-2 display generator supports a single output gamma map, so
gggglllloooobbbbaaaallllggggaaaammmmmmmmaaaa must be used with this target hardware. The DG4-8
supports sixteen gamma maps, so each channel may use its own unique
ddddiiiitttthhhheeeerrrr==== [OOOONNNN|OOOOFFFFFFFF] - Specifies whether or not the output of this
channel is to be dithered. If ddddiiiitttthhhheeeerrrr is not selected, and the frame
buffer color representation has more precision than the the video
format, i.e., 12-bit RGB pixels in the frame buffer with RGB10 pixel
format for video, the colors will be truncated. If dither is
selected, a fixed pattern of noise will be added to the colors
before they are truncated to reduce the perceptible artifacts
introduced by truncation. By default, dithering is OOOOFFFFFFFF.
eeeennnnaaaabbbblllleeee==== [OOOONNNN|OOOOFFFFFFFF] - Specifies whether this channel should be enabled
in the combination. If a channel is disabled, but not deleted, the
definition of the channel is stored in the combination, but no
output is generated, and no bandwidth is consumed for the channel.
If any parameters are specified for a channel, it is enabled by
default; all other channels are disabled by default.
ffffiiiilllltttteeeerrrrssssiiiizzzzeeee====_Xxxxx_Y - Specifies the size of the filters used when the
channel resizes the source pixels to the channel. Values for the
x-filter are in the range [1,13], for the y-filter [1,7].
ffffoooorrrrmmmmaaaatttt====<_f_o_r_m_a_t _n_a_m_e> - Specifies the name of the video format to be
used on this channel. For the encoder channel, the only valid
values are NNNNTTTTSSSSCCCC and PPPPAAAALLLL, corresponding to the 640x486_30i and
768x576_25i formats. For Sirius, the valid values are 555522225555, 666622225555,
CCCCCCCCIIIIRRRR666600001111____555522225555, and CCCCCCCCIIIIRRRR666600001111____666622225555, corresponding to the 646x486_30i,
768x576_25i, CCIR601_525 (720x485_25i), and CCIR601_625
(720x576_25i) formats, respectively. For GVO, the valid values are
CCCCCCCCIIIIRRRR666600001111____555522225555____DDDDGGGGOOOO, and CCCCCCCCIIIIRRRR666600001111____666622225555____DDDDGGGGOOOO. The default format for the
encoder is NNNNTTTTSSSSCCCC. The default for Sirius is 555522225555. The default for
GVO is CCCCCCCCIIIIRRRR666600001111____555522225555____DDDDGGGGOOOO. The default format for all other channels
is 1280x1024_60.
ggggaaaaiiiinnnn====<_v_a_l_u_e> - Specifies the default output video gain for this
channel. The valid range is [0,10], and the default is 1. This
value will be coerced to the closest gain which is physically
realizable on the output channel. Thus, if the gain is set and
subsequently queried, the input and returned values may not be the
same.
ggggaaaammmmmmmmaaaa====<_v_a_l_u_e> - Specifies the output video gamma value for this
channel. Valid values for gamma are floating point numbers in the
range [0,20], and the default is 1.7. Setting this parameter
modifies the gamma values on all components of the output channel.
To modify gamma value on a single component, use one of the options
ggggaaaammmmmmmmaaaarrrr, ggggaaaammmmmmmmaaaagggg, or ggggaaaammmmmmmmaaaabbbb.
hhhhpppphhhhaaaasssseeee====<_v_a_l_u_e> - Specifies the default horizontal phase value for
this channel. This setting applies only if the channel is genlocked
to external sync. Positive values delay the genlocked video channel
with respect to external sync, and negative values advance it.
<_v_a_l_u_e> is a floating point number. The default is 0000.