FFmpegContent does not need audio_length().

[dcpomatic.git] / src / lib / audio_content.h

diff --git a/src/lib/audio_content.h b/src/lib/audio_content.h
index cecc8f13d65c1a0875a0dca0f0b2e383a37eb20c..85728922ac98661c90af0496c56915259008c421 100644 (file)
--- a/src/lib/audio_content.h
+++ b/src/lib/audio_content.h
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2013-2014 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
@@ -17,6 +17,10 @@
 
 */
 
+/** @file  src/lib/audio_content.h
+ *  @brief AudioContent and AudioContentProperty classes.
+ */
+
 #ifndef DCPOMATIC_AUDIO_CONTENT_H
 #define DCPOMATIC_AUDIO_CONTENT_H
 
@@ -27,44 +31,55 @@ namespace cxml {
        class Node;
 }
 
+class AudioProcessor;
+
+/** @class AudioContentProperty
+ *  @brief Names for properties of AudioContent.
+ */
 class AudioContentProperty
 {
 public:
        static int const AUDIO_CHANNELS;
-       static int const AUDIO_LENGTH;
        static int const AUDIO_FRAME_RATE;
        static int const AUDIO_GAIN;
        static int const AUDIO_DELAY;
        static int const AUDIO_MAPPING;
+       static int const AUDIO_PROCESSOR;
 };
 
+/** @class AudioContent
+ *  @brief Parent class for content which may contain audio data.
+ */
 class AudioContent : public virtual Content
 {
 public:
-       typedef int64_t Frame;
-       
+       AudioContent (boost::shared_ptr<const Film>);
        AudioContent (boost::shared_ptr<const Film>, DCPTime);
        AudioContent (boost::shared_ptr<const Film>, boost::filesystem::path);
-       AudioContent (boost::shared_ptr<const Film>, boost::shared_ptr<const cxml::Node>);
+       AudioContent (boost::shared_ptr<const Film>, cxml::ConstNodePtr);
        AudioContent (boost::shared_ptr<const Film>, std::vector<boost::shared_ptr<Content> >);
 
        void as_xml (xmlpp::Node *) const;
        std::string technical_summary () const;
 
+       /** @return number of audio channels in the content */
        virtual int audio_channels () const = 0;
-       virtual ContentTime audio_length () const = 0;
-       virtual int content_audio_frame_rate () const = 0;
-       virtual int output_audio_frame_rate () const = 0;
+       /** @return the frame rate of the content */
+       virtual int audio_frame_rate () const = 0;
        virtual AudioMapping audio_mapping () const = 0;
-       virtual void set_audio_mapping (AudioMapping) = 0;
+       virtual void set_audio_mapping (AudioMapping);
        virtual boost::filesystem::path audio_analysis_path () const;
 
+       int resampled_audio_frame_rate () const;
+       int processed_audio_channels () const;
+
        boost::signals2::connection analyse_audio (boost::function<void()>);
 
-       void set_audio_gain (float);
+       void set_audio_gain (double);
        void set_audio_delay (int);
+       void set_audio_processor (AudioProcessor const *);
        
-       float audio_gain () const {
+       double audio_gain () const {
                boost::mutex::scoped_lock lm (_mutex);
                return _audio_gain;
        }
@@ -74,11 +89,19 @@ public:
                return _audio_delay;
        }
 
+       AudioProcessor const * audio_processor () const {
+               boost::mutex::scoped_lock lm (_mutex);
+               return _audio_processor;
+       }
+
+       std::string processing_description () const;
+       
 private:
        /** Gain to apply to audio in dB */
-       float _audio_gain;
+       double _audio_gain;
        /** Delay to apply to audio (positive moves audio later) in milliseconds */
        int _audio_delay;
+       AudioProcessor const * _audio_processor;
 };
 
 #endif