From 449aab3c465bbbf66d221fac3d7ea559f1720357 Mon Sep 17 00:00:00 2001 From: Paul Davis Date: Mon, 2 Jun 2008 21:41:35 +0000 Subject: rollback to 3428, before the mysterious removal of libs/* at 3431/3432 git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf --- libs/ardour/ardour/meter.h | 77 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 libs/ardour/ardour/meter.h (limited to 'libs/ardour/ardour/meter.h') diff --git a/libs/ardour/ardour/meter.h b/libs/ardour/ardour/meter.h new file mode 100644 index 0000000000..e19c0a51ca --- /dev/null +++ b/libs/ardour/ardour/meter.h @@ -0,0 +1,77 @@ +/* + Copyright (C) 2006 Paul Davis + + 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. +*/ + +#ifndef __ardour_meter_h__ +#define __ardour_meter_h__ + +#include +#include +#include +#include + +namespace ARDOUR { + +class BufferSet; +class ChanCount; +class Session; + + +/** Meters peaks on the input and stores them for access. + */ +class PeakMeter : public Processor { +public: + PeakMeter(Session& s) : Processor(s, "meter", PreFader) {} + + void reset (); + void reset_max (); + + bool configure_io (ChanCount in, ChanCount out); + + /** Compute peaks */ + void run_in_place (BufferSet& bufs, nframes_t start_frame, nframes_t end_frame, nframes_t nframes, nframes_t offset); + + float peak_power (uint32_t n) { + if (n < _visible_peak_power.size()) { + return _visible_peak_power[n]; + } else { + return minus_infinity(); + } + } + + float max_peak_power (uint32_t n) { + if (n < _max_peak_power.size()) { + return _max_peak_power[n]; + } else { + return minus_infinity(); + } + } + +private: + + friend class IO; + void meter(); + + std::vector _peak_power; + std::vector _visible_peak_power; + std::vector _max_peak_power; +}; + + +} // namespace ARDOUR + +#endif // __ardour_meter_h__ -- cgit v1.2.3