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-rw-r--r--src/stl_binary_writer.cc150
1 files changed, 86 insertions, 64 deletions
diff --git a/src/stl_binary_writer.cc b/src/stl_binary_writer.cc
index 9931985..baed8d8 100644
--- a/src/stl_binary_writer.cc
+++ b/src/stl_binary_writer.cc
@@ -170,9 +170,10 @@ sub::write_stl_binary (
ofstream output (file_name.string().c_str ());
STLBinaryTables tables;
- /* Find the longest subtitle in characters and count the number of lines we have */
+ /* Find the longest subtitle in characters */
+
int longest = 0;
- int lines = 0;
+
BOOST_FOREACH (Subtitle const& i, subtitles) {
BOOST_FOREACH (Line const& j, i.lines) {
int t = 0;
@@ -180,7 +181,6 @@ sub::write_stl_binary (
t += k.text.size ();
}
longest = std::max (longest, t);
- ++lines;
}
}
@@ -205,7 +205,7 @@ sub::write_stl_binary (
put_string (buffer + 230, revision_date);
put_int_as_string (buffer + 236, revision_number, 2);
/* TTI blocks */
- put_int_as_string (buffer + 238, lines, 5);
+ put_int_as_string (buffer + 238, subtitles.size(), 5);
/* Total number of subtitles */
put_int_as_string (buffer + 243, subtitles.size(), 5);
/* Total number of subtitle groups */
@@ -233,53 +233,76 @@ sub::write_stl_binary (
BOOST_FOREACH (Subtitle const& i, subtitles) {
- size_t line = 0;
+ /* Find the top vertical position of this subtitle */
+ optional<int> top;
BOOST_FOREACH (Line const& j, i.lines) {
-
- memset (buffer, 0, 128);
-
- /* XXX: these should increment, surely! */
- /* Subtitle group number */
- put_int_as_int (buffer + 0, 1, 1);
- /* Subtitle number */
- put_int_as_int (buffer + 1, 0, 2);
- /* Extension block number. These are indexed from zero except the last one is 255 */
- put_int_as_int (buffer + 3, line == (i.lines.size() - 1) ? 255 : line, 1);
- /* Cumulative status */
- put_int_as_int (buffer + 4, tables.cumulative_status_enum_to_file (CUMULATIVE_STATUS_NOT_CUMULATIVE), 1);
- /* Time code in */
- put_int_as_int (buffer + 5, i.from.hours(), 1);
- put_int_as_int (buffer + 6, i.from.minutes(), 1);
- put_int_as_int (buffer + 7, i.from.seconds(), 1);
- put_int_as_int (buffer + 8, i.from.frames_at(sub::Rational(frames_per_second * 1000, 1000)), 1);
- /* Time code out */
- put_int_as_int (buffer + 9, i.to.hours(), 1);
- put_int_as_int (buffer + 10, i.to.minutes(), 1);
- put_int_as_int (buffer + 11, i.to.seconds(), 1);
- put_int_as_int (buffer + 12, i.to.frames_at(sub::Rational(frames_per_second * 1000, 1000)), 1);
- /* Vertical position */
- put_int_as_int (buffer + 13, vertical_position(j), 1);
-
- /* Justification code */
- switch (j.horizontal_position.reference) {
- case LEFT_OF_SCREEN:
- put_int_as_int (buffer + 14, tables.justification_enum_to_file (JUSTIFICATION_LEFT), 1);
- break;
- case HORIZONTAL_CENTRE_OF_SCREEN:
- put_int_as_int (buffer + 14, tables.justification_enum_to_file (JUSTIFICATION_CENTRE), 1);
- break;
- case RIGHT_OF_SCREEN:
- put_int_as_int (buffer + 14, tables.justification_enum_to_file (JUSTIFICATION_RIGHT), 1);
- break;
+ int const vp = vertical_position (j);
+ if (!top || vp < top.get ()) {
+ top = vp;
}
+ }
+
+ memset (buffer, 0, 128);
+
+ /* XXX: these should increment, surely! */
+ /* Subtitle group number */
+ put_int_as_int (buffer + 0, 1, 1);
+ /* Subtitle number */
+ put_int_as_int (buffer + 1, 0, 2);
+ /* Extension block number. Use 0xff here to indicate that it is the last TTI
+ block in this subtitle "set", as we only ever use one.
+ */
+ put_int_as_int (buffer + 3, 255, 1);
+ /* Cumulative status */
+ put_int_as_int (buffer + 4, tables.cumulative_status_enum_to_file (CUMULATIVE_STATUS_NOT_CUMULATIVE), 1);
+ /* Time code in */
+ put_int_as_int (buffer + 5, i.from.hours(), 1);
+ put_int_as_int (buffer + 6, i.from.minutes(), 1);
+ put_int_as_int (buffer + 7, i.from.seconds(), 1);
+ put_int_as_int (buffer + 8, i.from.frames_at(sub::Rational(frames_per_second * 1000, 1000)), 1);
+ /* Time code out */
+ put_int_as_int (buffer + 9, i.to.hours(), 1);
+ put_int_as_int (buffer + 10, i.to.minutes(), 1);
+ put_int_as_int (buffer + 11, i.to.seconds(), 1);
+ put_int_as_int (buffer + 12, i.to.frames_at(sub::Rational(frames_per_second * 1000, 1000)), 1);
+ /* Vertical position */
+ put_int_as_int (buffer + 13, top.get(), 1);
+
+ /* Justification code */
+ /* XXX: this assumes the first line has the right value */
+ switch (i.lines.front().horizontal_position.reference) {
+ case LEFT_OF_SCREEN:
+ put_int_as_int (buffer + 14, tables.justification_enum_to_file (JUSTIFICATION_LEFT), 1);
+ break;
+ case HORIZONTAL_CENTRE_OF_SCREEN:
+ put_int_as_int (buffer + 14, tables.justification_enum_to_file (JUSTIFICATION_CENTRE), 1);
+ break;
+ case RIGHT_OF_SCREEN:
+ put_int_as_int (buffer + 14, tables.justification_enum_to_file (JUSTIFICATION_RIGHT), 1);
+ break;
+ }
+
+ /* Comment flag */
+ put_int_as_int (buffer + 15, tables.comment_enum_to_file (COMMENT_NO), 1);
+
+ /* Text */
+ string text;
+ bool italic = false;
+ bool underline = false;
+ optional<int> last_vp;
+
+ BOOST_FOREACH (Line const& j, i.lines) {
- /* Comment flag */
- put_int_as_int (buffer + 15, tables.comment_enum_to_file (COMMENT_NO), 1);
+ /* CR/LF down to this line */
+ int const vp = vertical_position (j);
- /* Text */
- string text;
- bool italic = false;
- bool underline = false;
+ if (last_vp) {
+ for (int k = last_vp.get(); k < vp; ++k) {
+ text += "\x8A";
+ }
+ }
+
+ last_vp = vp;
BOOST_FOREACH (Block const& k, j.blocks) {
if (k.underline && !underline) {
@@ -299,29 +322,28 @@ sub::write_stl_binary (
text += utf16_to_iso6937 (utf_to_utf<wchar_t> (k.text));
}
+ }
- /* Turn italic/underline off before the end of this subtitle */
-
- if (underline) {
- text += "\x83";
- }
+ /* Turn italic/underline off before the end of this subtitle */
- if (italic) {
- text += "\x81";
- }
+ if (underline) {
+ text += "\x83";
+ }
- if (text.length() > 111) {
- text = text.substr (111);
- }
+ if (italic) {
+ text += "\x81";
+ }
- while (text.length() < 112) {
- text += "\x8F";
- }
+ if (text.length() > 111) {
+ text = text.substr (111);
+ }
- put_string (buffer + 16, text);
- output.write (buffer, 128);
- ++line;
+ while (text.length() < 112) {
+ text += "\x8F";
}
+
+ put_string (buffer + 16, text);
+ output.write (buffer, 128);
}
delete[] buffer;
generated by cgit v1.2.3 (git 2.46.0) at 2026-04-08 10:54:32 +0000