X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Faudio_decoder.cc;h=a65e5f7594eaf804bcd6b140293ac303e8dcead0;hb=694fa81296e7fc8215f15414bd773354b253e07e;hp=20c8ea1ea812c60b7b33fd62a8d1300fe8c3958d;hpb=0a93237cb5e4642d3b698ff9b7d0cfae5401478c;p=dcpomatic.git

diff --git a/src/lib/audio_decoder.cc b/src/lib/audio_decoder.cc
index 20c8ea1ea..a65e5f759 100644
--- a/src/lib/audio_decoder.cc
+++ b/src/lib/audio_decoder.cc
@@ -20,6 +20,7 @@
 #include "audio_decoder.h"
 #include "audio_buffers.h"
 #include "audio_decoder_stream.h"
+#include "audio_content.h"
 #include <boost/foreach.hpp>
 #include <iostream>
 
@@ -46,6 +47,29 @@ AudioDecoder::get_audio (AudioStreamPtr stream, Frame frame, Frame length, bool
 void
 AudioDecoder::audio (AudioStreamPtr stream, shared_ptr<const AudioBuffers> data, ContentTime time)
 {
+	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;
+	}
+
 	_streams[stream]->audio (data, time);
 }