using boost::algorithm::replace_all;
using boost::is_any_of;
using boost::locale::conv::utf_to_utf;
+using boost::shared_ptr;
using namespace sub;
+namespace sub {
+
class InputReader : public boost::noncopyable
{
public:
std::istream& _in;
};
+class FILEInputReader : public InputReader
+{
+public:
+ FILEInputReader (FILE* in)
+ : _in (in)
+ {
+
+ }
+
+ void read (int size, string what)
+ {
+ size_t const N = fread (_buffer, 1, size, _in);
+ if (static_cast<int>(N) != size) {
+ throw STLError (String::compose("Could not read %1 block from binary STL file", what));
+ }
+ }
+
+private:
+ FILE* _in;
+};
+
+}
+
STLBinaryReader::STLBinaryReader (istream& in)
{
- StreamInputReader reader (in);
- reader.read (1024, "GSI");
-
- code_page_number = atoi (reader.get_string(0, 3).c_str());
- frame_rate = stl_dfc_to_frame_rate (reader.get_string(3, 8));
- display_standard = _tables.display_standard_file_to_enum (reader.get_string(11, 1));
- language_group = _tables.language_group_file_to_enum (reader.get_string(12, 2));
- language = _tables.language_file_to_enum (reader.get_string(14, 2));
- original_programme_title = reader.get_string(16, 32);
- original_episode_title = reader.get_string(48, 32);
- translated_programme_title = reader.get_string(80, 32);
- translated_episode_title = reader.get_string(112, 32);
- translator_name = reader.get_string(144, 32);
- translator_contact_details = reader.get_string(176, 32);
- subtitle_list_reference_code = reader.get_string(208, 16);
- creation_date = reader.get_string(224, 6);
- revision_date = reader.get_string(230, 6);
- revision_number = reader.get_string(236, 2);
-
- tti_blocks = atoi (reader.get_string(238, 5).c_str());
- number_of_subtitles = atoi (reader.get_string(243, 5).c_str());
- subtitle_groups = atoi (reader.get_string(248, 3).c_str());
- maximum_characters = atoi (reader.get_string(251, 2).c_str());
- maximum_rows = atoi (reader.get_string(253, 2).c_str());
- timecode_status = _tables.timecode_status_file_to_enum (reader.get_string(255, 1));
- start_of_programme = reader.get_string(256, 8);
- first_in_cue = reader.get_string(264, 8);
- disks = atoi (reader.get_string(272, 1).c_str());
- disk_sequence_number = atoi (reader.get_string(273, 1).c_str());
- country_of_origin = reader.get_string(274, 3);
- publisher = reader.get_string(277, 32);
- editor_name = reader.get_string(309, 32);
- editor_contact_details = reader.get_string(341, 32);
+ read (shared_ptr<InputReader>(new StreamInputReader(in)));
+}
+
+STLBinaryReader::STLBinaryReader (FILE* in)
+{
+ read (shared_ptr<InputReader>(new FILEInputReader(in)));
+}
+
+void STLBinaryReader::read (shared_ptr<InputReader> reader)
+{
+ reader->read (1024, "GSI");
+
+ code_page_number = atoi (reader->get_string(0, 3).c_str());
+ frame_rate = stl_dfc_to_frame_rate (reader->get_string(3, 8));
+ display_standard = _tables.display_standard_file_to_enum (reader->get_string(11, 1));
+ language_group = _tables.language_group_file_to_enum (reader->get_string(12, 2));
+ language = _tables.language_file_to_enum (reader->get_string(14, 2));
+ original_programme_title = reader->get_string(16, 32);
+ original_episode_title = reader->get_string(48, 32);
+ translated_programme_title = reader->get_string(80, 32);
+ translated_episode_title = reader->get_string(112, 32);
+ translator_name = reader->get_string(144, 32);
+ translator_contact_details = reader->get_string(176, 32);
+ subtitle_list_reference_code = reader->get_string(208, 16);
+ creation_date = reader->get_string(224, 6);
+ revision_date = reader->get_string(230, 6);
+ revision_number = reader->get_string(236, 2);
+
+ tti_blocks = atoi (reader->get_string(238, 5).c_str());
+ number_of_subtitles = atoi (reader->get_string(243, 5).c_str());
+ subtitle_groups = atoi (reader->get_string(248, 3).c_str());
+ maximum_characters = atoi (reader->get_string(251, 2).c_str());
+ maximum_rows = atoi (reader->get_string(253, 2).c_str());
+
+ if (maximum_rows == 99) {
+ /* https://tech.ebu.ch/docs/tech/tech3360.pdf says
+ "It is recommended that for files with a large MNR value (e.g. '99') the
+ font size (height) should be defined as ~ 1/15 of the 'Subtitle Safe Area'
+ and a lineHeight of 120% is used to achieve a row height of ~ 1/12 of the height
+ of the 'Subtitle Safe Area'.
+ */
+ maximum_rows = 12;
+ }
+
+ timecode_status = _tables.timecode_status_file_to_enum (reader->get_string(255, 1));
+ start_of_programme = reader->get_string(256, 8);
+ first_in_cue = reader->get_string(264, 8);
+ disks = atoi (reader->get_string(272, 1).c_str());
+ disk_sequence_number = atoi (reader->get_string(273, 1).c_str());
+ country_of_origin = reader->get_string(274, 3);
+ publisher = reader->get_string(277, 32);
+ editor_name = reader->get_string(309, 32);
+ editor_contact_details = reader->get_string(341, 32);
for (int i = 0; i < tti_blocks; ++i) {
- reader.read (128, "TTI");
+ reader->read (128, "TTI");
- if (_tables.comment_file_to_enum (reader.get_int(15, 1)) == COMMENT_YES) {
+ if (_tables.comment_file_to_enum (reader->get_int(15, 1)) == COMMENT_YES) {
continue;
}
- string const whole = reader.get_string(16, 112);
+ string const whole = reader->get_string(16, 112);
/* Split the text up into lines (8Ah is a new line) */
vector<string> lines;
for (size_t i = 0; i < lines.size(); ++i) {
RawSubtitle sub;
- sub.from = reader.get_timecode(5, frame_rate);
- sub.to = reader.get_timecode(9, frame_rate);
- sub.vertical_position.line = reader.get_int(13, 1) + i;
+ sub.from = reader->get_timecode(5, frame_rate);
+ sub.to = reader->get_timecode(9, frame_rate);
+ /* XXX: only the verticial position of the first TTI block should be used (says the spec),
+ so using reader->get_int(13, 1) here is wrong if i > 0
+ */
+ sub.vertical_position.line = reader->get_int(13, 1) + i;
sub.vertical_position.lines = maximum_rows;
sub.vertical_position.reference = TOP_OF_SCREEN;
sub.italic = italic;
sub.underline = underline;
/* XXX: not sure what to do with JC = 0, "unchanged presentation" */
- int const h = reader.get_int(14, 1);
+ int const h = reader->get_int(14, 1);
switch (h) {
case 0:
case 2:
projects / libsub.git / blobdiff