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/*
Copyright (C) 2013 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 "black_decoder.h"
#include "image.h"
#include "null_content.h"
using boost::shared_ptr;
BlackDecoder::BlackDecoder (shared_ptr<const Film> f, shared_ptr<NullContent> c)
: Decoder (f)
, VideoDecoder (f, c)
{
}
void
BlackDecoder::pass ()
{
if (!_image) {
_image.reset (new SimpleImage (AV_PIX_FMT_RGB24, video_size(), true));
_image->make_black ();
video (_image, false, _next_video);
} else {
video (_image, true, _next_video);
}
}
float
BlackDecoder::video_frame_rate () const
{
boost::shared_ptr<const Film> f = _film.lock ();
if (!f) {
return 24;
}
return f->dcp_video_frame_rate ();
}
ContentVideoFrame
BlackDecoder::video_length () const
{
return _video_content->length() * video_frame_rate() / TIME_HZ;
}
Time
BlackDecoder::position () const
{
return _next_video;
}
void
BlackDecoder::seek (Time t)
{
_next_video = t;
}
void
BlackDecoder::seek_back ()
{
boost::shared_ptr<const Film> f = _film.lock ();
if (!f) {
return;
}
_next_video -= f->video_frames_to_time (2);
}
void
BlackDecoder::seek_forward ()
{
boost::shared_ptr<const Film> f = _film.lock ();
if (!f) {
return;
}
_next_video += f->video_frames_to_time (1);
}
bool
BlackDecoder::done () const
{
return video_done ();
}
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