[media] docs-rst: add tabularcolumns to all tables

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>

1 files changed, 6 insertions, 0 deletions

diff --git a/Documentation/media/uapi/mediactl/media-ioc-enum-links.rst b/Documentation/media/uapi/mediactl/media-ioc-enum-links.rst
index 87443b1ce42d..f4334f5765c6 100644
--- a/Documentation/media/uapi/mediactl/media-ioc-enum-links.rst
+++ b/Documentation/media/uapi/mediactl/media-ioc-enum-links.rst
@@ -57,6 +57,8 @@ returned during the enumeration process.
 
 .. _media-links-enum:
 
+.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}|
+
 .. flat-table:: struct media_links_enum
     :header-rows:  0
     :stub-columns: 0
@@ -93,6 +95,8 @@ returned during the enumeration process.
 
 .. _media-pad-desc:
 
+.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}|
+
 .. flat-table:: struct media_pad_desc
     :header-rows:  0
     :stub-columns: 0
@@ -127,6 +131,8 @@ returned during the enumeration process.
 
 .. _media-link-desc:
 
+.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}|
+
 .. flat-table:: struct media_link_desc
     :header-rows:  0
     :stub-columns: 0