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LaTeX doesn't handle too well auto-width on tables, and ReST
markup requires an special tag to give it the needed hints.
As we're using A4 paper, we have 17cm of useful spaces. As
most media tables have widths, let's use it to generate the
needed via the following perl script:
my ($line_size, $table_header, $has_cols) = (17.5, 0, 0);
my $out;
my $header = "";
my @widths = ();
sub round { $_[0] > 0 ? int($_[0] + .5) : -int(-$_[0] + .5) }
while (<>) {
if (!$table_header) {
$has_cols = 1 if (m/..\s+tabularcolumns::/);
if (m/..\s+flat-table::/) {
$table_header = 1;
$header = $_;
next;
}
$out .= $_;
next;
}
$header .= $_;
@widths = split(/ /, $1) if (m/:widths:\s+(.*)/);
if (m/^\n$/) {
if (!$has_cols && @widths) {
my ($tot, $t, $i) = (0, 0, 0);
foreach my $v(@widths) { $tot += $v; };
$out .= ".. tabularcolumns:: |";
for ($i = 0; $i < scalar @widths - 1; $i++) {
my $v = $widths[$i];
my $w = round(10 * ($v * $line_size) / $tot) / 10;
$out .= sprintf "p{%.1fcm}|", $w;
$t += $w;
}
my $w = $line_size - $t;
$out .= sprintf "p{%.1fcm}|\n\n", $w;
}
$out .= $header;
$table_header = 0;
$has_cols = 0;
$header = "";
@widths = ();
}
}
print $out;
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
172 lines
3.6 KiB
ReStructuredText
172 lines
3.6 KiB
ReStructuredText
.. -*- coding: utf-8; mode: rst -*-
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.. _CEC_ADAP_G_CAPS:
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*********************
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ioctl CEC_ADAP_G_CAPS
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*********************
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Name
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====
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CEC_ADAP_G_CAPS - Query device capabilities
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Synopsis
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========
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.. cpp:function:: int ioctl( int fd, int request, struct cec_caps *argp )
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Arguments
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=========
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``fd``
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File descriptor returned by :ref:`open() <cec-func-open>`.
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``request``
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CEC_ADAP_G_CAPS
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``argp``
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Description
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===========
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.. note::
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This documents the proposed CEC API. This API is not yet finalized
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and is currently only available as a staging kernel module.
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All cec devices must support :ref:`ioctl CEC_ADAP_G_CAPS <CEC_ADAP_G_CAPS>`. To query
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device information, applications call the ioctl with a pointer to a
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struct :ref:`cec_caps <cec-caps>`. The driver fills the structure and
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returns the information to the application. The ioctl never fails.
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.. _cec-caps:
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.. tabularcolumns:: |p{1.0cm}|p{1.0cm}|p{15.5cm}|
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.. flat-table:: struct cec_caps
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:header-rows: 0
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:stub-columns: 0
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:widths: 1 1 16
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- .. row 1
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- char
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- ``driver[32]``
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- The name of the cec adapter driver.
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- .. row 2
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- char
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- ``name[32]``
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- The name of this CEC adapter. The combination ``driver`` and
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``name`` must be unique.
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- .. row 3
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- __u32
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- ``capabilities``
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- The capabilities of the CEC adapter, see
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:ref:`cec-capabilities`.
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- .. row 4
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- __u32
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- ``version``
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- CEC Framework API version, formatted with the ``KERNEL_VERSION()``
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macro.
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.. _cec-capabilities:
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.. tabularcolumns:: |p{4.4cm}|p{1.5cm}|p{11.6cm}|
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.. flat-table:: CEC Capabilities Flags
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:header-rows: 0
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:stub-columns: 0
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:widths: 3 1 8
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- .. _`CEC-CAP-PHYS-ADDR`:
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- ``CEC_CAP_PHYS_ADDR``
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- 0x00000001
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- Userspace has to configure the physical address by calling
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:ref:`ioctl CEC_ADAP_S_PHYS_ADDR <CEC_ADAP_S_PHYS_ADDR>`. If
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this capability isn't set, then setting the physical address is
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handled by the kernel whenever the EDID is set (for an HDMI
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receiver) or read (for an HDMI transmitter).
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- .. _`CEC-CAP-LOG-ADDRS`:
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- ``CEC_CAP_LOG_ADDRS``
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- 0x00000002
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- Userspace has to configure the logical addresses by calling
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:ref:`ioctl CEC_ADAP_S_LOG_ADDRS <CEC_ADAP_S_LOG_ADDRS>`. If
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this capability isn't set, then the kernel will have configured
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this.
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- .. _`CEC-CAP-TRANSMIT`:
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- ``CEC_CAP_TRANSMIT``
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- 0x00000004
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- Userspace can transmit CEC messages by calling
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:ref:`ioctl CEC_TRANSMIT <CEC_TRANSMIT>`. This implies that
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userspace can be a follower as well, since being able to transmit
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messages is a prerequisite of becoming a follower. If this
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capability isn't set, then the kernel will handle all CEC
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transmits and process all CEC messages it receives.
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- .. _`CEC-CAP-PASSTHROUGH`:
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- ``CEC_CAP_PASSTHROUGH``
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- 0x00000008
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- Userspace can use the passthrough mode by calling
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:ref:`ioctl CEC_S_MODE <CEC_S_MODE>`.
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- .. _`CEC-CAP-RC`:
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- ``CEC_CAP_RC``
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- 0x00000010
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- This adapter supports the remote control protocol.
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- .. _`CEC-CAP-MONITOR-ALL`:
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- ``CEC_CAP_MONITOR_ALL``
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- 0x00000020
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- The CEC hardware can monitor all messages, not just directed and
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broadcast messages.
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Return Value
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============
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On success 0 is returned, on error -1 and the ``errno`` variable is set
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appropriately. The generic error codes are described at the
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:ref:`Generic Error Codes <gen-errors>` chapter.
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