Basic support for calculating audio gains based on the sound processor's gain curve.

1 files changed, 66 insertions, 0 deletions

diff --git a/src/lib/sound_processor.h b/src/lib/sound_processor.h
new file mode 100644
index 000000000..2edf38840
--- /dev/null
+++ b/src/lib/sound_processor.h
@@ -0,0 +1,66 @@
+/*
+    Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+
+    This program 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,
+    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.
+
+*/
+
+/** @file src/sound_processor.h
+ *  @brief A class to describe a sound processor.
+ */
+
+#ifndef DVDOMATIC_SOUND_PROCESSOR_H
+#define DVDOMATIC_SOUND_PROCESSOR_H
+
+#include <string>
+#include <vector>
+
+/** @class SoundProcessor
+ *  @brief Class to describe a sound processor.
+ */
+class SoundProcessor
+{
+public:
+	SoundProcessor (std::string i, std::string n);
+
+	virtual float db_for_fader_change (float from, float to) const = 0;
+
+	/** @return id for our use */
+	std::string id () const {
+		return _id;
+	}
+
+	/** @return user-visible name for this sound processor */
+	std::string name () const {
+		return _name;
+	}
+	
+	static std::vector<SoundProcessor const *> all ();
+	static void setup_sound_processors ();
+	static SoundProcessor const * from_id (std::string id);
+	static SoundProcessor const * from_index (int);
+	static int as_index (SoundProcessor const *);
+
+private:
+	/** id for our use */
+	std::string _id;
+	/** user-visible name for this sound processor */
+	std::string _name;
+
+	/** sll available sound processors */
+	static std::vector<SoundProcessor const *> _sound_processors;
+};
+
+#endif