Merge master.

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

diff --git a/src/lib/audio_content.cc b/src/lib/audio_content.cc
index 1896c4d5c356ad5105ab952c2e9f0067a2c77931..e8fd4bbd39d0e93813bd78b325624307e60e4750 100644 (file)
--- a/src/lib/audio_content.cc
+++ b/src/lib/audio_content.cc
@@ -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
@@ -18,7 +18,7 @@
 */
 
 #include <libcxml/cxml.h>
-#include <libdcp/raw_convert.h>
+#include <dcp/raw_convert.h>
 #include "audio_content.h"
 #include "analyse_audio_job.h"
 #include "job_manager.h"
@@ -32,7 +32,7 @@ using std::string;
 using std::vector;
 using boost::shared_ptr;
 using boost::dynamic_pointer_cast;
-using libdcp::raw_convert;
+using dcp::raw_convert;
 
 int const AudioContentProperty::AUDIO_CHANNELS = 200;
 int const AudioContentProperty::AUDIO_LENGTH = 201;
@@ -41,7 +41,7 @@ int const AudioContentProperty::AUDIO_GAIN = 203;
 int const AudioContentProperty::AUDIO_DELAY = 204;
 int const AudioContentProperty::AUDIO_MAPPING = 205;
 
-AudioContent::AudioContent (shared_ptr<const Film> f, Time s)
+AudioContent::AudioContent (shared_ptr<const Film> f, DCPTime s)
        : Content (f, s)
        , _audio_gain (0)
        , _audio_delay (Config::instance()->default_audio_delay ())
@@ -146,5 +146,43 @@ AudioContent::audio_analysis_path () const
 string
 AudioContent::technical_summary () const
 {
-       return String::compose ("audio: channels %1, length %2, raw rate %3, out rate %4", audio_channels(), audio_length(), content_audio_frame_rate(), output_audio_frame_rate());
+       return String::compose (
+               "audio: channels %1, length %2, content rate %3, resampled rate %4",
+               audio_channels(),
+               audio_length().seconds(),
+               audio_frame_rate(),
+               resampled_audio_frame_rate()
+               );
+}
+
+void
+AudioContent::set_audio_mapping (AudioMapping)
+{
+       signal_changed (AudioContentProperty::AUDIO_MAPPING);
+}
+
+/** @return the frame rate that this content should be resampled to in order
+ *  that it is in sync with the active video content at its start time.
+ */
+int
+AudioContent::resampled_audio_frame_rate () const
+{
+       shared_ptr<const Film> film = _film.lock ();
+       assert (film);
+       
+       /* Resample to a DCI-approved sample rate */
+       double t = dcp_audio_frame_rate (audio_frame_rate ());
+
+       FrameRateChange frc = film->active_frame_rate_change (position ());
+
+       /* Compensate if the DCP is being run at a different frame rate
+          to the source; that is, if the video is run such that it will
+          look different in the DCP compared to the source (slower or faster).
+       */
+
+       if (frc.change_speed) {
+               t /= frc.speed_up;
+       }
+
+       return rint (t);
 }