/*
- Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2018 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ 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.
- This program is distributed in the hope that it will be useful,
+ 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 this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#define DCPOMATIC_AUDIO_DECODER_H
#include "decoder.h"
-#include "content.h"
-#include "audio_content.h"
#include "content_audio.h"
+#include "audio_stream.h"
+#include "decoder_part.h"
+#include <boost/enable_shared_from_this.hpp>
+#include <boost/signals2.hpp>
class AudioBuffers;
+class AudioContent;
+class AudioDecoderStream;
+class Log;
+class Film;
class Resampler;
/** @class AudioDecoder.
* @brief Parent class for audio decoders.
*/
-class AudioDecoder : public virtual Decoder
+class AudioDecoder : public boost::enable_shared_from_this<AudioDecoder>, public DecoderPart
{
public:
- AudioDecoder (boost::shared_ptr<const AudioContent>);
-
- boost::shared_ptr<const AudioContent> audio_content () const {
- return _audio_content;
- }
-
- /** Try to fetch some audio from a specific place in this content.
- * @param frame Frame to start from.
- * @param length Frames to get.
- * @param accurate true to try hard to return frames from exactly `frame', false if we don't mind nearby frames.
- * @return Time-stamped audio data which may or may not be from the location (and of the length) requested.
- */
- boost::shared_ptr<ContentAudio> get_audio (AudioFrame time, AudioFrame length, bool accurate);
-
-protected:
+ AudioDecoder (Decoder* parent, boost::shared_ptr<const AudioContent> content, bool fast);
- void seek (ContentTime time, bool accurate);
- void audio (boost::shared_ptr<const AudioBuffers>, ContentTime);
+ boost::optional<dcpomatic::ContentTime> position (boost::shared_ptr<const Film> film) const;
+ void emit (boost::shared_ptr<const Film> film, AudioStreamPtr stream, boost::shared_ptr<const AudioBuffers>, dcpomatic::ContentTime, bool time_already_delayed = false);
+ void seek ();
void flush ();
- void reset_decoded_audio ();
- void add (boost::shared_ptr<const AudioBuffers>);
-
- boost::shared_ptr<const AudioContent> _audio_content;
- boost::shared_ptr<Resampler> _resampler;
- boost::shared_ptr<AudioProcessor> _processor;
- boost::optional<AudioFrame> _audio_position;
- /** Currently-available decoded audio data */
- ContentAudio _decoded_audio;
- /** The time of an accurate seek after which we have not yet received any actual
- data at the seek time.
- */
- boost::optional<ContentTime> _seek_reference;
+
+ dcpomatic::ContentTime stream_position (boost::shared_ptr<const Film> film, AudioStreamPtr stream) const;
+
+ boost::signals2::signal<void (AudioStreamPtr, ContentAudio)> Data;
+
+private:
+ void silence (int milliseconds);
+
+ boost::shared_ptr<const AudioContent> _content;
+ /** Frame after the last one that was emitted from Data (i.e. at the resampled rate, if applicable)
+ * for each AudioStream.
+ */
+ typedef std::map<AudioStreamPtr, Frame> PositionMap;
+ PositionMap _positions;
+ typedef std::map<AudioStreamPtr, boost::shared_ptr<Resampler> > ResamplerMap;
+ ResamplerMap _resamplers;
+
+ bool _fast;
};
#endif