[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, 18 insertions, 0 deletions

diff --git a/Documentation/media/uapi/v4l/dev-sliced-vbi.rst b/Documentation/media/uapi/v4l/dev-sliced-vbi.rst
index ec52a825f4d6..9f59ba6847ec 100644
--- a/Documentation/media/uapi/v4l/dev-sliced-vbi.rst
+++ b/Documentation/media/uapi/v4l/dev-sliced-vbi.rst
@@ -105,6 +105,8 @@ which may return ``EBUSY`` can be the
 struct v4l2_sliced_vbi_format
 -----------------------------
 
+.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{2.9cm}|p{2.9cm}|p{2.9cm}|
+
 .. flat-table::
     :header-rows:  0
     :stub-columns: 0
@@ -250,6 +252,8 @@ struct v4l2_sliced_vbi_format
 Sliced VBI services
 -------------------
 
+.. tabularcolumns:: |p{4.4cm}|p{2.2cm}|p{2.2cm}|p{4.4cm}|p{4.3cm}|
+
 .. flat-table::
     :header-rows:  1
     :stub-columns: 0
@@ -371,6 +375,8 @@ of one video frame. The ``id`` of unused
 struct v4l2_sliced_vbi_data
 ---------------------------
 
+.. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}|
+
 .. flat-table::
     :header-rows:  0
     :stub-columns: 0
@@ -556,6 +562,8 @@ number).
 struct v4l2_mpeg_vbi_fmt_ivtv
 -----------------------------
 
+.. tabularcolumns:: |p{3.5cm}|p{3.5cm}|p{3.5cm}|p{7.0cm}|
+
 .. flat-table::
     :header-rows:  0
     :stub-columns: 0
@@ -611,6 +619,8 @@ struct v4l2_mpeg_vbi_fmt_ivtv
 Magic Constants for struct v4l2_mpeg_vbi_fmt_ivtv magic field
 -------------------------------------------------------------
 
+.. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}|
+
 .. flat-table::
     :header-rows:  1
     :stub-columns: 0
@@ -652,6 +662,8 @@ Magic Constants for struct v4l2_mpeg_vbi_fmt_ivtv magic field
 struct v4l2_mpeg_vbi_itv0
 -------------------------
 
+.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}|
+
 .. flat-table::
     :header-rows:  0
     :stub-columns: 0
@@ -709,6 +721,8 @@ struct v4l2_mpeg_vbi_itv0
 struct v4l2_mpeg_vbi_ITV0
 -------------------------
 
+.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}|
+
 .. flat-table::
     :header-rows:  0
     :stub-columns: 0
@@ -734,6 +748,8 @@ struct v4l2_mpeg_vbi_ITV0
 struct v4l2_mpeg_vbi_itv0_line
 ------------------------------
 
+.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.7cm}|
+
 .. flat-table::
     :header-rows:  0
     :stub-columns: 0
@@ -765,6 +781,8 @@ struct v4l2_mpeg_vbi_itv0_line
 Line Identifiers for struct v4l2_mpeg_vbi_itv0_line id field
 ------------------------------------------------------------
 
+.. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.7cm}|
+
 .. flat-table::
     :header-rows:  1
     :stub-columns: 0