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/*
Copyright (C) 2013-2020 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic 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.
DCP-o-matic 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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#include "audio_content.h"
#include "film.h"
#include "piece.h"
using boost::optional;
using boost::shared_ptr;
using namespace dcpomatic;
DCPTime
Piece::position () const
{
return content->position ();
}
DCPTime
Piece::end (shared_ptr<const Film> film) const
{
return content->end (film);
}
DCPTime
Piece::content_video_to_dcp (Frame f) const
{
/* It might seem more logical here to convert s to a ContentTime (using the FrameRateChange)
then convert that ContentTime to frames at the content's rate. However this fails for
situations like content at 29.9978733fps, DCP at 30fps. The accuracy of the Time type is not
enough to distinguish between the two with low values of time (e.g. 3200 in Time units).
Instead we convert the DCPTime using the DCP video rate then account for any skip/repeat.
*/
DCPTime const d = DCPTime::from_frames(f * frc.factor(), frc.dcp) - DCPTime(content->trim_start(), frc);
return d + position();
}
DCPTime
Piece::content_time_to_dcp (ContentTime t) const
{
return max (DCPTime(), DCPTime(t - content->trim_start(), frc) + position());
}
Crop
Piece::video_crop () const
{
return content->video->crop ();
}
DCPTime
Piece::resampled_audio_to_dcp (shared_ptr<const Film> film, Frame f) const
{
/* See notes in content_video_to_dcp */
return DCPTime::from_frames(f, film->audio_frame_rate())
- DCPTime(content->trim_start(), frc)
+ position();
}
ContentTime
Piece::dcp_to_content_time (shared_ptr<const Film> film, DCPTime t) const
{
DCPTime s = t - position();
s = min(content->length_after_trim(film), s);
return max(ContentTime(), ContentTime(s, frc) + content->trim_start());
}
bool
Piece::video_use () const
{
return content->video->use();
}
optional<double>
Piece::video_fade (shared_ptr<const Film> film, Frame frame) const
{
return content->video->fade (film, frame);
}
dcp::Size
Piece::video_scaled_size (dcp::Size container_size)
{
return content->video->scaled_size(container_size);
}
optional<ColourConversion>
Piece::video_colour_conversion () const
{
return content->video->colour_conversion();
}
VideoRange
Piece::video_range () const
{
return content->video->range();
}
int
Piece::audio_resampled_frame_rate (boost::shared_ptr<const Film> film) const
{
return content->audio->resampled_frame_rate (film);
}
double
Piece::audio_gain () const
{
return content->audio->gain();
}
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