Restore short-cutting of analysis gain updates.

If we have an analysis of one piece of content and
the gain changes we don't re-run the analysis, instead
applying a suitable `correction' in the UI.

1 files changed, 13 insertions, 0 deletions

diff --git a/src/lib/audio_analysis.h b/src/lib/audio_analysis.h
index 2411b4316..478b0e532 100644
--- a/src/lib/audio_analysis.h
+++ b/src/lib/audio_analysis.h
@@ -75,12 +75,25 @@ public:
 		return _peak_time;
 	}
 
+	boost::optional<double> analysis_gain () const {
+		return _analysis_gain;
+	}
+
+	void set_analysis_gain (double gain) {
+		_analysis_gain = gain;
+	}
+
 	void write (boost::filesystem::path);
 
 private:
 	std::vector<std::vector<AudioPoint> > _data;
 	boost::optional<float> _peak;
 	boost::optional<DCPTime> _peak_time;
+	/** If this analysis was run on a single piece of
+	 *  content we store its gain in dB when the analysis
+	 *  happened.
+	 */
+	boost::optional<double> _analysis_gain;
 };
 
 #endif