#include "subtitle_decoder.h"
#include "subtitle_content.h"
#include "util.h"
+#include "log.h"
+#include "compose.hpp"
#include <sub/subtitle.h>
#include <boost/shared_ptr.hpp>
#include <boost/foreach.hpp>
SubtitleDecoder::SubtitleDecoder (
Decoder* parent,
shared_ptr<const SubtitleContent> c,
+ shared_ptr<Log> log,
function<list<ContentTimePeriod> (ContentTimePeriod, bool)> image_during,
function<list<ContentTimePeriod> (ContentTimePeriod, bool)> text_during
)
- : _parent (parent)
+ : DecoderPart (parent, log)
, _content (c)
, _image_during (image_during)
, _text_during (text_during)
SubtitleDecoder::give_image (ContentTimePeriod period, shared_ptr<Image> image, dcpomatic::Rect<double> rect)
{
_decoded_image.push_back (ContentImageSubtitle (period, image, rect));
+ _position = period.from;
}
void
}
_decoded_text.push_back (ContentTextSubtitle (period, s));
+ _position = period.to;
}
-/** @param sp Full periods of subtitles that are showing or starting during the specified period */
+/** Get the subtitles that correspond to a given list of periods.
+ * @param subs Subtitles.
+ * @param sp Periods for which to extract subtitles from subs.
+ */
template <class T>
list<T>
-SubtitleDecoder::get (list<T> const & subs, list<ContentTimePeriod> const & sp, ContentTimePeriod period, bool starting, bool accurate)
+SubtitleDecoder::get (list<T> const & subs, list<ContentTimePeriod> const & sp, ContentTimePeriod period, bool accurate)
{
if (sp.empty ()) {
- /* Nothing in this period */
return list<T> ();
}
- /* Seek if what we want is before what we have, or a more than a little bit after */
- if (subs.empty() || sp.back().to < subs.front().period().from || sp.front().from > (subs.back().period().to + ContentTime::from_seconds (1))) {
- _parent->seek (sp.front().from, true);
+ /* Find the time of the first subtitle we don't have in subs */
+ optional<ContentTime> missing;
+ BOOST_FOREACH (ContentTimePeriod i, sp) {
+ typename list<T>::const_iterator j = subs.begin();
+ while (j != subs.end() && j->period() != i) {
+ ++j;
+ }
+ if (j == subs.end ()) {
+ missing = i.from;
+ break;
+ }
+ }
+
+ /* Suggest to our parent decoder that it might want to seek if we haven't got what we're being asked for */
+ if (missing) {
+ _log->log (
+ String::compose (
+ "SD suggests seek to %1 from %2",
+ to_string (*missing),
+ position() ? to_string(*position()) : "nowhere"),
+ LogEntry::TYPE_DEBUG_DECODE);
+ maybe_seek (*missing, true);
}
/* Now enough pass() calls will either:
/* XXX: inefficient */
list<T> out;
- for (typename list<T>::const_iterator i = subs.begin(); i != subs.end(); ++i) {
- if ((starting && period.contains(i->period().from)) || (!starting && period.overlap(i->period()))) {
- out.push_back (*i);
+ BOOST_FOREACH (ContentTimePeriod i, sp) {
+ typename list<T>::const_iterator j = subs.begin();
+ while (j != subs.end() && j->period() != i) {
+ ++j;
+ }
+ if (j != subs.end()) {
+ out.push_back (*j);
}
}
list<ContentTextSubtitle>
SubtitleDecoder::get_text (ContentTimePeriod period, bool starting, bool accurate)
{
- return get<ContentTextSubtitle> (_decoded_text, _text_during (period, starting), period, starting, accurate);
+ return get<ContentTextSubtitle> (_decoded_text, _text_during (period, starting), period, accurate);
}
list<ContentImageSubtitle>
SubtitleDecoder::get_image (ContentTimePeriod period, bool starting, bool accurate)
{
- return get<ContentImageSubtitle> (_decoded_image, _image_during (period, starting), period, starting, accurate);
+ return get<ContentImageSubtitle> (_decoded_image, _image_during (period, starting), period, accurate);
}
void
-SubtitleDecoder::seek (ContentTime, bool)
+SubtitleDecoder::seek (ContentTime t, bool)
{
+ _log->log (String::compose ("SD seek to %1", to_string(t)), LogEntry::TYPE_DEBUG_DECODE);
reset ();
+ _position.reset ();
}
void
}
}
- /* Find the lowest proportional postion */
+ /* Find the lowest proportional position */
optional<float> lowest_proportional;
BOOST_FOREACH (sub::Line i, subtitle.lines) {
if (i.vertical_position.proportional) {
BOOST_FOREACH (sub::Block j, i.blocks) {
if (!j.font_size.specified()) {
- /* Fallback default font size if none other has been specified */
+ /* Fallback default font size if no other has been specified */
j.font_size.set_points (48);
}