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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 "silence_decoder.h"
#include "null_content.h"
#include "audio_buffers.h"
using std::min;
using std::cout;
using boost::shared_ptr;
SilenceDecoder::SilenceDecoder (shared_ptr<const Film> f, shared_ptr<NullContent> c)
: Decoder (f)
, AudioDecoder (f)
, _null_content (c)
{
}
void
SilenceDecoder::pass ()
{
shared_ptr<const Film> film = _film.lock ();
assert (film);
AudioContent::Frame const this_time = min (_null_content->audio_length() - _next_audio_frame, int64_t (_null_content->output_audio_frame_rate() / 2));
shared_ptr<AudioBuffers> data (new AudioBuffers (film->dcp_audio_channels(), this_time));
data->make_silent ();
audio (data, _next_audio_frame);
}
bool
SilenceDecoder::done () const
{
return _next_audio_frame > _null_content->audio_length ();
}
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