Rename SafeStringStream -> locked_stringstream. Bump deps for removal of stringstream.

[dcpomatic.git] / src / lib / audio_decoder.cc

diff --git a/src/lib/audio_decoder.cc b/src/lib/audio_decoder.cc
index aecf396440d63153a3c1c8a9cef4130af05502a4..bc37960583eb52b15edd89435aff901e4c85c1a9 100644 (file)
--- a/src/lib/audio_decoder.cc
+++ b/src/lib/audio_decoder.cc
@@ -1,67 +1,110 @@
 /*
-    Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2012-2016 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/>.
 
 */
 
 #include "audio_decoder.h"
 #include "audio_buffers.h"
-#include "exceptions.h"
-#include "log.h"
-#include "resampler.h"
+#include "audio_decoder_stream.h"
+#include "audio_content.h"
+#include <boost/foreach.hpp>
+#include <iostream>
 
 #include "i18n.h"
 
-using std::stringstream;
-using std::list;
-using std::pair;
 using std::cout;
-using boost::optional;
+using std::map;
 using boost::shared_ptr;
 
-AudioDecoder::AudioDecoder (shared_ptr<const Film> film, shared_ptr<const AudioContent> content)
-       : Decoder (film)
-       , _audio_content (content)
-       , _last_audio (0)
+AudioDecoder::AudioDecoder (Decoder* parent, shared_ptr<const AudioContent> content, shared_ptr<Log> log)
+       : _ignore (false)
 {
-       if (content->output_audio_frame_rate() != content->content_audio_frame_rate() && content->audio_channels ()) {
-               _resampler.reset (new Resampler (content->content_audio_frame_rate(), content->output_audio_frame_rate(), content->audio_channels ()));
+       BOOST_FOREACH (AudioStreamPtr i, content->streams ()) {
+               _streams[i] = shared_ptr<AudioDecoderStream> (new AudioDecoderStream (content, i, parent, log));
        }
 }
 
+ContentAudio
+AudioDecoder::get (AudioStreamPtr stream, Frame frame, Frame length, bool accurate)
+{
+       return _streams[stream]->get (frame, length, accurate);
+}
+
 void
-AudioDecoder::audio (shared_ptr<const AudioBuffers> data, ContentTime time)
+AudioDecoder::give (AudioStreamPtr stream, shared_ptr<const AudioBuffers> data, ContentTime time)
 {
-       if (_resampler) {
-               data = _resampler->run (data);
+       if (_ignore) {
+               return;
+       }
+
+       if (_streams.find (stream) == _streams.end ()) {
+
+               /* This method can be called with an unknown stream during the following sequence:
+                  - Add KDM to some DCP content.
+                  - Content gets re-examined.
+                  - SingleStreamAudioContent::take_from_audio_examiner creates a new stream.
+                  - Some content property change signal is delivered so Player::Changed is emitted.
+                  - Film viewer to re-gets the frame.
+                  - Player calls DCPDecoder pass which calls this method on the new stream.
+
+                  At this point the AudioDecoder does not know about the new stream.
+
+                  Then
+                  - Some other property change signal is delivered which marks the player's pieces invalid.
+                  - Film viewer re-gets again.
+                  - Everything is OK.
+
+                  In this situation it is fine for us to silently drop the audio.
+               */
+
+               return;
        }
-       
-       _pending.push_back (shared_ptr<DecodedAudio> (new DecodedAudio (data, time)));
-       _last_audio = time + (data->frames() * TIME_HZ / _audio_content->output_audio_frame_rate());
+
+       _streams[stream]->audio (data, time);
 }
 
 void
 AudioDecoder::flush ()
 {
-       if (!_resampler) {
-               return;
+       for (map<AudioStreamPtr, shared_ptr<AudioDecoderStream> >::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
+               i->second->flush ();
        }
+}
+
+void
+AudioDecoder::seek (ContentTime t, bool accurate)
+{
+       for (map<AudioStreamPtr, shared_ptr<AudioDecoderStream> >::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
+               i->second->seek (t, accurate);
+       }
+}
 
-       shared_ptr<const AudioBuffers> b = _resampler->flush ();
-       if (b) {
-               audio (b, _last_audio);
+/** Set this decoder never to produce any data */
+void
+AudioDecoder::set_ignore ()
+{
+       _ignore = true;
+}
+
+void
+AudioDecoder::set_fast ()
+{
+       for (map<AudioStreamPtr, shared_ptr<AudioDecoderStream> >::const_iterator i = _streams.begin(); i != _streams.end(); ++i) {
+               i->second->set_fast ();
        }
 }