+/* -*- c-basic-offset: 8; default-tab-width: 8; -*- */
+
+/*
+ Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
#include "video_decoder.h"
#include "subtitle.h"
#include "film.h"
#include "image.h"
-#include "log.h"
-#include "options.h"
-#include "job.h"
+#include "i18n.h"
+
+using std::cout;
using boost::shared_ptr;
-using boost::optional;
-VideoDecoder::VideoDecoder (shared_ptr<Film> f, shared_ptr<const Options> o, Job* j)
- : Decoder (f, o, j)
- , _video_frame (0)
+VideoDecoder::VideoDecoder (shared_ptr<const Film> f, shared_ptr<const VideoContent> c)
+ : Decoder (f)
+ , _next_video (0)
+ , _video_content (c)
+ , _frame_rate_conversion (c->video_frame_rate(), f->dcp_frame_rate())
+ , _odd (false)
{
}
-/** Called by subclasses to tell the world that some video data is ready.
- * We find a subtitle then emit it for listeners.
- * @param frame to decode; caller manages memory.
+/** Called by subclasses when some video is ready.
+ * @param image frame to emit.
+ * @param same true if this frame is the same as the last one passed to this call.
+ * @param t Time of the frame within the source.
*/
void
-VideoDecoder::emit_video (shared_ptr<Image> image)
+VideoDecoder::video (shared_ptr<Image> image, bool same, Time t)
{
+ if (_frame_rate_conversion.skip && _odd) {
+ _odd = !_odd;
+ return;
+ }
+
shared_ptr<Subtitle> sub;
- if (_timed_subtitle && _timed_subtitle->displayed_at (double (video_frame()) / _film->frames_per_second())) {
+ if (_timed_subtitle && _timed_subtitle->displayed_at (t)) {
sub = _timed_subtitle->subtitle ();
}
- signal_video (image, sub);
-}
+ Video (image, same, sub, t);
-void
-VideoDecoder::repeat_last_video ()
-{
- if (!_last_image) {
- _last_image.reset (new CompactImage (pixel_format(), native_size()));
- _last_image->make_black ();
+ if (_frame_rate_conversion.repeat) {
+ Video (image, true, sub, t + _film->video_frames_to_time (1));
+ _next_video = t + _film->video_frames_to_time (2);
+ } else {
+ _next_video = t + _film->video_frames_to_time (1);
}
- signal_video (_last_image, _last_subtitle);
-}
-
-void
-VideoDecoder::signal_video (shared_ptr<Image> image, shared_ptr<Subtitle> sub)
-{
- TIMING ("Decoder emits %1", _video_frame);
- Video (image, sub);
- ++_video_frame;
-
- _last_image = image;
- _last_subtitle = sub;
+ _odd = !_odd;
}
+/** Called by subclasses when a subtitle is ready.
+ * s may be 0 to say that there is no current subtitle.
+ * @param s New current subtitle, or 0.
+ */
void
-VideoDecoder::emit_subtitle (shared_ptr<TimedSubtitle> s)
+VideoDecoder::subtitle (shared_ptr<TimedSubtitle> s)
{
_timed_subtitle = s;
- if (_timed_subtitle && _opt->apply_crop) {
+ if (_timed_subtitle) {
Position const p = _timed_subtitle->subtitle()->position ();
- _timed_subtitle->subtitle()->set_position (Position (p.x - _film->crop().left, p.y - _film->crop().top));
- }
-}
-
-void
-VideoDecoder::set_subtitle_stream (optional<SubtitleStream> s)
-{
- _subtitle_stream = s;
-}
-
-void
-VideoDecoder::set_progress () const
-{
- if (_job && _film->dcp_length()) {
- _job->set_progress (float (_video_frame) / _film->length().get());
+ _timed_subtitle->subtitle()->set_position (Position (p.x - _video_content->crop().left, p.y - _video_content->crop().top));
}
}