diff options
author | Doug McLain <doug@nostar.net> | 2008-06-02 05:02:28 +0000 |
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committer | Doug McLain <doug@nostar.net> | 2008-06-02 05:02:28 +0000 |
commit | 9c0d7d72d70082a54f823cd44c0ccda5da64bb6f (patch) | |
tree | 96ec400b83b8c1c06852b1936f684b5fbcd47a79 /libs/ardour/meter.cc | |
parent | 2f3f697bb8e185eb43c2c50b4eefc2bcb937f269 (diff) |
remove empty sigc++2 directory
git-svn-id: svn://localhost/ardour2/branches/3.0@3432 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'libs/ardour/meter.cc')
-rw-r--r-- | libs/ardour/meter.cc | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/libs/ardour/meter.cc b/libs/ardour/meter.cc deleted file mode 100644 index e75c1d89ca..0000000000 --- a/libs/ardour/meter.cc +++ /dev/null @@ -1,165 +0,0 @@ -/* - 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. -*/ - -#include <ardour/meter.h> -#include <algorithm> -#include <cmath> -#include <ardour/buffer_set.h> -#include <ardour/peak.h> -#include <ardour/dB.h> -#include <ardour/session.h> - -namespace ARDOUR { - - -/** Get peaks from @a bufs - * Input acceptance is lenient - the first n buffers from @a bufs will - * be metered, where n was set by the last call to setup(), excess meters will - * be set to 0. - */ -void -PeakMeter::run_in_place (BufferSet& bufs, nframes_t start_frame, nframes_t end_frame, nframes_t nframes, nframes_t offset) -{ - size_t meterable = std::min((size_t)bufs.count().n_total(), _peak_power.size()); - - size_t n = 0; - - // Meter what we have (midi) - for ( ; n < meterable && n < bufs.count().n_midi(); ++n) { - - float val = 0; - - // GUI needs a better MIDI meter, not much information can be - // expressed through peaks alone - for (MidiBuffer::iterator i = bufs.get_midi(n).begin(); i != bufs.get_midi(n).end(); ++i) { - const MIDI::Event& ev = *i; - if (ev.is_note_on()) { - const float this_vel = log(ev.buffer()[2] / 127.0 * (M_E*M_E-M_E) + M_E) - 1.0; - //printf("V %d -> %f\n", (int)((Byte)ev.buffer[2]), this_vel); - if (this_vel > val) - val = this_vel; - } else { - val += 1.0 / bufs.get_midi(n).capacity(); - if (val > 1.0) - val = 1.0; - } - } - - _peak_power[n] = val; - - } - - // Meter what we have (audio) - for ( ; n < meterable && n < bufs.count().n_audio(); ++n) { - _peak_power[n] = compute_peak (bufs.get_audio(n).data(nframes, offset), nframes, _peak_power[n]); - } - - // Zero any excess peaks - for (size_t n = meterable; n < _peak_power.size(); ++n) { - _peak_power[n] = 0; - } -} - -void -PeakMeter::reset () -{ - for (size_t i = 0; i < _peak_power.size(); ++i) { - _peak_power[i] = 0; - } -} - -void -PeakMeter::reset_max () -{ - for (size_t i = 0; i < _max_peak_power.size(); ++i) { - _max_peak_power[i] = -INFINITY; - } -} - -bool -PeakMeter::configure_io (ChanCount in, ChanCount out) -{ - /* we're transparent no matter what. fight the power. */ - if (out != in) - return false; - - uint32_t limit = in.n_total(); - - while (_peak_power.size() > limit) { - _peak_power.pop_back(); - _visible_peak_power.pop_back(); - _max_peak_power.pop_back(); - } - - while (_peak_power.size() < limit) { - _peak_power.push_back(0); - _visible_peak_power.push_back(minus_infinity()); - _max_peak_power.push_back(minus_infinity()); - } - - assert(_peak_power.size() == limit); - assert(_visible_peak_power.size() == limit); - assert(_max_peak_power.size() == limit); - - Processor::configure_io(in, out); - - return true; -} - -/** To be driven by the Meter signal from IO. - * Caller MUST hold io_lock! - */ -void -PeakMeter::meter () -{ - assert(_visible_peak_power.size() == _peak_power.size()); - - const size_t limit = _peak_power.size(); - - for (size_t n = 0; n < limit; ++n) { - - /* XXX we should use atomic exchange here */ - - /* grab peak since last read */ - - float new_peak = _peak_power[n]; - _peak_power[n] = 0; - - /* compute new visible value using falloff */ - - if (new_peak > 0.0) { - new_peak = coefficient_to_dB (new_peak); - } else { - new_peak = minus_infinity(); - } - - /* update max peak */ - - _max_peak_power[n] = std::max (new_peak, _max_peak_power[n]); - - if (Config->get_meter_falloff() == 0.0f || new_peak > _visible_peak_power[n]) { - _visible_peak_power[n] = new_peak; - } else { - // do falloff - new_peak = _visible_peak_power[n] - (Config->get_meter_falloff() * 0.01f); - _visible_peak_power[n] = std::max (new_peak, -INFINITY); - } - } -} - -} // namespace ARDOUR |