*/
+/** @file src/stl_binary_writer.cc
+ * @brief Writer for STL binary files.
+ */
+
#include "stl_binary_writer.h"
#include "subtitle.h"
#include "iso6937.h"
#include "stl_util.h"
#include "compose.hpp"
+#include "sub_assert.h"
#include <boost/locale.hpp>
#include <list>
#include <cmath>
using std::max;
using std::cout;
using boost::locale::conv::utf_to_utf;
+using boost::optional;
using namespace sub;
/** Arbitrary number which to divide the screen into rows; e.g.
static void
put_string (char* p, unsigned int n, string s)
{
- assert (s.length() <= n);
-
+ SUB_ASSERT (s.length() <= n);
+
memcpy (p, s.c_str (), s.length ());
memset (p + s.length(), ' ', n - s.length ());
}
static void
put_int_as_string (char* p, int v, unsigned int n)
{
- std::stringstream s;
+ locked_stringstream s;
/* Be careful to ensure we get no thousands separators */
s.imbue (std::locale::classic ());
s << setw (n) << setfill ('0');
s << v;
- assert (s.str().length() == n);
+ SUB_ASSERT (s.str().length() == n);
put_string (p, s.str ());
}
}
}
+static int
+vertical_position (sub::Line const & line)
+{
+ int vp = 0;
+ if (line.vertical_position.proportional) {
+ switch (line.vertical_position.reference.get_value_or (TOP_OF_SCREEN)) {
+ case TOP_OF_SCREEN:
+ vp = rint (line.vertical_position.proportional.get() * ROWS);
+ break;
+ case CENTRE_OF_SCREEN:
+ vp = rint (line.vertical_position.proportional.get() * ROWS + (ROWS / 2.0));
+ break;
+ case BOTTOM_OF_SCREEN:
+ vp = rint (ROWS - (line.vertical_position.proportional.get() * ROWS));
+ break;
+ default:
+ break;
+ }
+ } else if (line.vertical_position.line) {
+ float const prop = float (line.vertical_position.line.get()) / line.vertical_position.lines.get ();
+ switch (line.vertical_position.reference.get_value_or (TOP_OF_SCREEN)) {
+ case TOP_OF_SCREEN:
+ vp = prop * ROWS;
+ break;
+ case CENTRE_OF_SCREEN:
+ vp = (prop + 0.5) * ROWS;
+ break;
+ case BOTTOM_OF_SCREEN:
+ vp = (1 - prop) * ROWS;
+ break;
+ default:
+ break;
+ }
+ }
+
+ return vp;
+}
+
/** @param language ISO 3-character country code for the language of the subtitles */
void
sub::write_stl_binary (
boost::filesystem::path file_name
)
{
- assert (original_programme_title.size() <= 32);
- assert (original_episode_title.size() <= 32);
- assert (translated_programme_title.size() <= 32);
- assert (translated_episode_title.size() <= 32);
- assert (translator_name.size() <= 32);
- assert (translator_contact_details.size() <= 32);
- assert (creation_date.size() == 6);
- assert (revision_date.size() == 6);
- assert (revision_number <= 99);
- assert (country_of_origin.size() == 3);
- assert (publisher.size() <= 32);
- assert (editor_name.size() <= 32);
- assert (editor_contact_details.size() <= 32);
-
+ SUB_ASSERT (original_programme_title.size() <= 32);
+ SUB_ASSERT (original_episode_title.size() <= 32);
+ SUB_ASSERT (translated_programme_title.size() <= 32);
+ SUB_ASSERT (translated_episode_title.size() <= 32);
+ SUB_ASSERT (translator_name.size() <= 32);
+ SUB_ASSERT (translator_contact_details.size() <= 32);
+ SUB_ASSERT (creation_date.size() == 6);
+ SUB_ASSERT (revision_date.size() == 6);
+ SUB_ASSERT (revision_number <= 99);
+ SUB_ASSERT (country_of_origin.size() == 3);
+ SUB_ASSERT (publisher.size() <= 32);
+ SUB_ASSERT (editor_name.size() <= 32);
+ SUB_ASSERT (editor_contact_details.size() <= 32);
+
char* buffer = new char[1024];
memset (buffer, 0, 1024);
ofstream output (file_name.string().c_str ());
STLBinaryTables tables;
- /* Find the longest subtitle in characters and the number of lines */
+ /* Find the longest subtitle in characters */
int longest = 0;
- int lines = 0;
for (list<Subtitle>::const_iterator i = subtitles.begin(); i != subtitles.end(); ++i) {
for (list<Line>::const_iterator j = i->lines.begin(); j != i->lines.end(); ++j) {
t += k->text.size ();
}
longest = max (longest, t);
- ++lines;
}
}
-
+
/* Code page: 850 */
put_string (buffer + 0, "850");
/* Disk format code */
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, lines, 5);
+ put_int_as_string (buffer + 243, subtitles.size(), 5);
/* Total number of subtitle groups */
put_string (buffer + 248, "001");
/* Maximum number of displayable characters in any text row */
output.write (buffer, 1024);
- int N = 0;
for (list<Subtitle>::const_iterator i = subtitles.begin(); i != subtitles.end(); ++i) {
+
+ /* Find the top vertical position of this subtitle */
+ optional<int> top;
for (list<Line>::const_iterator j = i->lines.begin(); j != i->lines.end(); ++j) {
+ int const vp = vertical_position (*j);
+ if (!top || vp < top.get ()) {
+ top = vp;
+ }
+ }
- memset (buffer, 0, 1024);
-
- /* Subtitle group number */
- put_int_as_int (buffer + 0, 1, 1);
- /* Subtitle number */
- put_int_as_int (buffer + 1, N, 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.frame(frames_per_second).hours (), 1);
- put_int_as_int (buffer + 6, i->from.frame(frames_per_second).minutes (), 1);
- put_int_as_int (buffer + 7, i->from.frame(frames_per_second).seconds (), 1);
- put_int_as_int (buffer + 8, i->from.frame(frames_per_second).frames (), 1);
- /* Time code out */
- put_int_as_int (buffer + 9, i->to.frame(frames_per_second).hours (), 1);
- put_int_as_int (buffer + 10, i->to.frame(frames_per_second).minutes (), 1);
- put_int_as_int (buffer + 11, i->to.frame(frames_per_second).seconds (), 1);
- put_int_as_int (buffer + 12, i->to.frame(frames_per_second).frames (), 1);
- /* Vertical position */
- int vp = 0;
- if (j->vertical_position.proportional) {
- switch (j->vertical_position.reference.get_value_or (TOP_OF_SCREEN)) {
- case TOP_OF_SCREEN:
- vp = rint (j->vertical_position.proportional.get() * ROWS);
- break;
- case CENTRE_OF_SCREEN:
- vp = rint (j->vertical_position.proportional.get() * ROWS + (ROWS / 2.0));
- break;
- case BOTTOM_OF_SCREEN:
- vp = rint (ROWS - (j->vertical_position.proportional.get() * ROWS));
- break;
- default:
- break;
- }
- } else if (j->vertical_position.line) {
- /* XXX: how many lines are there...? We need to correct for any difference
- between the number of lines and our ROWS.
- */
- switch (j->vertical_position.reference.get_value_or (TOP_OF_SCREEN)) {
- case TOP_OF_SCREEN:
- vp = j->vertical_position.line.get();
- break;
- case CENTRE_OF_SCREEN:
- vp = j->vertical_position.line.get() + (ROWS / 2);
- break;
- case BOTTOM_OF_SCREEN:
- vp = ROWS - (j->vertical_position.line.get());
- break;
- default:
- break;
+ memset (buffer, 0, 1024);
+
+ /* 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) {
+ case LEFT:
+ put_int_as_int (buffer + 14, tables.justification_enum_to_file (JUSTIFICATION_LEFT), 1);
+ break;
+ case CENTRE:
+ put_int_as_int (buffer + 14, tables.justification_enum_to_file (JUSTIFICATION_CENTRE), 1);
+ break;
+ case RIGHT:
+ 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;
+
+ for (list<Line>::const_iterator j = i->lines.begin(); j != i->lines.end(); ++j) {
+
+ /* CR/LF down to this line */
+ int const vp = vertical_position (*j);
+
+ if (last_vp) {
+ for (int i = last_vp.get(); i < vp; ++i) {
+ text += "\x8A";
}
}
- put_int_as_int (buffer + 13, vp, 1);
- /* Justification code */
- /* XXX */
- put_int_as_int (buffer + 14, tables.justification_enum_to_file (JUSTIFICATION_NONE), 1);
- /* 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;
-
+
+ last_vp = vp;
+
for (list<Block>::const_iterator k = j->blocks.begin(); k != j->blocks.end(); ++k) {
if (k->underline && !underline) {
text += "\x82";
text += "\x81";
italic = false;
}
-
+
text += utf16_to_iso6937 (utf_to_utf<wchar_t> (k->text));
}
-
- text += "\x8A";
-
- if (text.length() > 111) {
- text = text.substr (111);
- }
-
- while (text.length() < 112) {
- text += "\x8F";
- }
-
- put_string (buffer + 16, text);
- output.write (buffer, 128);
}
+
+ /* Turn italic/underline off before the end of this subtitle */
+
+ if (underline) {
+ text += "\x83";
+ }
+
+ if (italic) {
+ text += "\x81";
+ }
+
+ if (text.length() > 111) {
+ text = text.substr (111);
+ }
+
+ while (text.length() < 112) {
+ text += "\x8F";
+ }
+
+ put_string (buffer + 16, text);
+ output.write (buffer, 128);
}
delete[] buffer;
projects / libsub.git / blobdiff