Fix failure to analyse audio in some cases.

This fixes audio-only content when the first-emitted audio is not
at time zero.  This used to cause a seek which is not possible
with audio-only.  This commit removes the unnecessary seek which
was due to missing silent-padding of the first-emitted audio.

5 files changed, 31 insertions, 4 deletions

diff --git a/src/lib/audio_decoder_stream.cc b/src/lib/audio_decoder_stream.cc
index bdcef598d..150e7c242 100644
--- a/src/lib/audio_decoder_stream.cc
+++ b/src/lib/audio_decoder_stream.cc
@@ -45,6 +45,10 @@ AudioDecoderStream::AudioDecoderStream (shared_ptr<const AudioContent> content,
 	, _stream (stream)
 	, _decoder (decoder)
 	, _log (log)
+	  /* We effectively start having done a seek to zero; this allows silence-padding of the first
+	     data that comes out of our decoder.
+	  */
+	, _seek_reference (ContentTime ())
 {
 	if (content->resampled_frame_rate() != _stream->frame_rate() && _stream->channels() > 0) {
 		_resampler.reset (new Resampler (_stream->frame_rate(), content->resampled_frame_rate(), _stream->channels ()));
diff --git a/src/lib/job_manager.h b/src/lib/job_manager.h
index 70ac00b37..c6be2a78e 100644
--- a/src/lib/job_manager.h
+++ b/src/lib/job_manager.h
@@ -32,7 +32,7 @@ class Job;
 class Film;
 class Playlist;
 
-extern void wait_for_jobs ();
+extern bool wait_for_jobs ();
 
 /** @class JobManager
  *  @brief A simple scheduler for jobs.
@@ -61,7 +61,7 @@ public:
 
 private:
 	/* This function is part of the test suite */
-	friend void ::wait_for_jobs ();
+	friend bool ::wait_for_jobs ();
 
 	JobManager ();
 	~JobManager ();
diff --git a/test/audio_analysis_test.cc b/test/audio_analysis_test.cc
index 5923e0698..278ea06d9 100644
--- a/test/audio_analysis_test.cc
+++ b/test/audio_analysis_test.cc
@@ -32,6 +32,8 @@
 #include "lib/ratio.h"
 #include "lib/job_manager.h"
 #include "lib/audio_content.h"
+#include "lib/content_factory.h"
+#include "lib/playlist.h"
 #include "test.h"
 
 using boost::shared_ptr;
@@ -168,3 +170,21 @@ BOOST_AUTO_TEST_CASE (audio_analysis_test3)
 	wait_for_jobs ();
 	BOOST_CHECK (done);
 }
+
+/** Run an audio analysis that triggered an exception in the audio decoder at one point */
+BOOST_AUTO_TEST_CASE (analyse_audio_test4)
+{
+	shared_ptr<Film> film = new_test_film ("analyse_audio_test");
+	film->set_container (Ratio::from_id ("185"));
+	film->set_dcp_content_type (DCPContentType::from_isdcf_name ("TLR"));
+	film->set_name ("frobozz");
+	shared_ptr<Content> content = content_factory (film, private_data / "20 The Wedding Convoy Song.m4a");
+	film->examine_and_add_content (content);
+	wait_for_jobs ();
+
+	shared_ptr<Playlist> playlist (new Playlist);
+	playlist->add (content);
+	boost::signals2::connection c;
+	JobManager::instance()->analyse_audio (film, playlist, c, boost::bind (&finished));
+	BOOST_CHECK (!wait_for_jobs ());
+}
diff --git a/test/test.cc b/test/test.cc
index c7a9e95bf..c57f76e61 100644
--- a/test/test.cc
+++ b/test/test.cc
@@ -291,7 +291,7 @@ check_xml (boost::filesystem::path ref, boost::filesystem::path test, list<strin
 	check_xml (ref_root, test_root, ignore);
 }
 
-void
+bool
 wait_for_jobs ()
 {
 	JobManager* jm = JobManager::instance ();
@@ -322,7 +322,10 @@ wait_for_jobs ()
 
 	if (jm->errors ()) {
 		JobManager::drop ();
+		return true;
 	}
+
+	return false;
 }
 
 void
diff --git a/test/test.h b/test/test.h
index 2208929a9..1593b3a03 100644
--- a/test/test.h
+++ b/test/test.h
@@ -25,7 +25,7 @@ class Image;
 
 extern boost::filesystem::path private_data;
 
-extern void wait_for_jobs ();
+extern bool wait_for_jobs ();
 extern boost::shared_ptr<Film> new_test_film (std::string);
 extern void check_dcp (boost::filesystem::path, boost::filesystem::path);
 extern void check_file (boost::filesystem::path ref, boost::filesystem::path check);