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Code Pull Requests Releases Activity

Use master_volume() for loudness normalization

This commit is contained in:
Robin Gareus 2020-07-20 23:14:52 +02:00
parent 001072e7d0
commit 4037534860
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
2 changed files with 19 additions and 9 deletions
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26
gtk2_ardour/editor_export_audio.cc
View File

@ -40,13 +40,14 @@
#include "ardour/audioplaylist.h"
#include "ardour/audioregion.h"
#include "ardour/chan_count.h"
#include "ardour/lua_api.h"
#include "ardour/dB.h"
#include "ardour/midi_region.h"
#include "ardour/session.h"
#include "ardour/session_directory.h"
#include "ardour/source_factory.h"
#include "ardour/types.h"
#include "ardour_message.h"
#include "audio_region_view.h"
#include "audio_time_axis.h"
#include "editor.h"
@ -93,16 +94,25 @@ Editor::export_selection ()
void
Editor::analyze_range_export ()
{
if (!_session->master_volume()) {
ArdourMessageDialog (_("Loudness Analysis is only available for sessions with a master-bus"));
return;
}
assert (_session->master_out());
if (_session->master_out()->output()->n_ports().n_audio() != 2) {
ArdourMessageDialog (_("Loudness Analysis is only available for sessions with a stereo master-bus"));
return;
}
float prev_gain = _session->master_volume()->get_value();
_session->master_volume ()->set_value (GAIN_COEFF_UNITY, Controllable::NoGroup);
LoudnessDialog ld (_session, get_selection().time);
if (ld.run () == RESPONSE_APPLY) {
// TODO lookup if already present, perhaps even use a special-cased gain plugin
// if plugin is present, use relative gain (and disable automation..)
boost::shared_ptr<Processor> proc = LuaAPI::new_luaproc (_session, "a-Amplifier");
assert (proc);
assert (_session->master_out());
LuaAPI::set_processor_param (proc, 0, ld.gain ());
_session->master_out()->add_processor_by_index (proc, -1, NULL, true);
_session->master_volume ()->set_value (dB_to_coefficient (ld.gain_db ()), Controllable::NoGroup);
} else {
_session->master_volume ()->set_value (prev_gain, Controllable::NoGroup);
}
}

2
gtk2_ardour/loudness_dialog.h
View File

@ -38,7 +38,7 @@ class LoudnessDialog : public ArdourDialog
public:
LoudnessDialog (ARDOUR::Session*, TimeSelection const&);
int run ();
float gain () const { return _gain; }
float gain_db () const { return _gain; }
protected:
bool on_delete_event (GdkEventAny*);