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-rw-r--r--src/lib/ffmpeg_content.cc7
-rw-r--r--test/time_calculation_test.cc26
2 files changed, 32 insertions, 1 deletions
diff --git a/src/lib/ffmpeg_content.cc b/src/lib/ffmpeg_content.cc
index bb9795f25..32c2dee8b 100644
--- a/src/lib/ffmpeg_content.cc
+++ b/src/lib/ffmpeg_content.cc
@@ -311,7 +311,12 @@ DCPTime
FFmpegContent::full_length () const
{
FrameRateChange const frc (active_video_frame_rate (), film()->video_frame_rate ());
- return DCPTime::from_frames (llrint (video->length_after_3d_combine() * frc.factor()), film()->video_frame_rate());
+ if (video) {
+ return DCPTime::from_frames (llrint (video->length_after_3d_combine() * frc.factor()), film()->video_frame_rate());
+ }
+
+ DCPOMATIC_ASSERT (audio);
+ return DCPTime::from_frames (llrint (audio->stream()->length() / frc.speed_up), audio->stream()->frame_rate());
}
void
diff --git a/test/time_calculation_test.cc b/test/time_calculation_test.cc
index 5e5c6211b..e9aa37f1e 100644
--- a/test/time_calculation_test.cc
+++ b/test/time_calculation_test.cc
@@ -83,6 +83,7 @@ static string const xml = "<Content>"
"<Name>und; 2 channels</Name>"
"<Id>2</Id>"
"<FrameRate>44100</FrameRate>"
+ "<Length>44100</Length>"
"<Channels>2</Channels>"
"<FirstAudio>0</FirstAudio>"
"<Mapping>"
@@ -142,6 +143,31 @@ BOOST_AUTO_TEST_CASE (ffmpeg_time_calculation_test)
/* 25fps content, 60fps DCP; length should be decreased */
film->set_video_frame_rate (60);
BOOST_CHECK_EQUAL (content->full_length(), DCPTime::from_seconds (content->video->length() * (50.0 / 60) / 25.0));
+
+ /* Make the content audio-only */
+ content->video.reset ();
+
+ /* 24fps content, 24fps DCP */
+ film->set_video_frame_rate (24);
+ content->set_video_frame_rate (24);
+ BOOST_CHECK_EQUAL (content->full_length(), DCPTime::from_seconds (1));
+ /* 25fps content, 25fps DCP */
+ film->set_video_frame_rate (25);
+ content->set_video_frame_rate (25);
+ BOOST_CHECK_EQUAL (content->full_length(), DCPTime::from_seconds (1));
+ /* 25fps content, 24fps DCP; length should be increased */
+ film->set_video_frame_rate (24);
+ BOOST_CHECK_SMALL (abs (content->full_length().get() - DCPTime::from_seconds(25.0 / 24).get()), 2);
+ /* 25fps content, 30fps DCP; length should be decreased */
+ film->set_video_frame_rate (30);
+ BOOST_CHECK_EQUAL (content->full_length(), DCPTime::from_seconds (25.0 / 30));
+ /* 25fps content, 50fps DCP; length should be the same */
+ film->set_video_frame_rate (50);
+ BOOST_CHECK_EQUAL (content->full_length(), DCPTime::from_seconds (1));
+ /* 25fps content, 60fps DCP; length should be decreased */
+ film->set_video_frame_rate (60);
+ BOOST_CHECK_EQUAL (content->full_length(), DCPTime::from_seconds (50.0 / 60));
+
}
/** Test Player::dcp_to_content_video */