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/*
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* HDSPMixer
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*
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* Copyright (C) 2003 Thomas Charbonnel (thomas@undata.org)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#pragma implementation
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#include "HDSPMixerMeter.h"
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HDSPMixerMeter::HDSPMixerMeter(int x, int y, bool not_output, HDSPMixerPeak *p):Fl_Widget(x, y, 8, METER_HEIGHT)
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{
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basew = (HDSPMixerWindow *)window();
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count = 0;
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fine_draw = 0;
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peaktext = p;
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new_peak_height = peak_height = 0;
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new_rms_height = rms_height = 0;
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fast_peak_level = 1000.0;
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slow_peak_level = 1000.0;
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max_level = 1000.0;
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/* this is no more as simple :
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H9652 cards do have both peak and rms data for outputs
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*/
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peak_rms = not_output;
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}
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void HDSPMixerMeter::draw()
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{
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if (!fine_draw) {
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fl_push_clip(x(), y()+(METER_HEIGHT-new_rms_height), w(), new_rms_height);
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fl_draw_pixmap(level_xpm, x(), y());
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fl_pop_clip();
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} else {
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if (new_rms_height > rms_height) {
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fl_push_clip(x(), y()+(METER_HEIGHT-new_rms_height), w(), new_rms_height-rms_height);
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fl_draw_pixmap(level_xpm, x(), y());
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fl_pop_clip();
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} else if (new_rms_height < rms_height) {
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fl_push_clip(x(), y()+(METER_HEIGHT-rms_height), w(), rms_height-new_rms_height);
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if (peak_rms) {
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fl_draw_pixmap(iomixer_xpm, x()-20, y()-59);
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} else {
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fl_draw_pixmap(output_xpm, x()-20, y()-27);
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}
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fl_pop_clip();
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}
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}
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rms_height = new_rms_height;
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if ((new_peak_height != peak_height || !fine_draw) && (peak_rms || basew->cards[basew->current_card]->type == H9652)) {
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if ((rms_height <= (peak_height - PEAK_HEIGHT)) || rms_height == 0) {
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fl_push_clip(x(), y()+(METER_HEIGHT - peak_height), w(), PEAK_HEIGHT+1);
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if (peak_rms) {
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fl_draw_pixmap(iomixer_xpm, x()-20, y()-59);
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} else {
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fl_draw_pixmap(output_xpm, x()-20, y()-27);
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}
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fl_pop_clip();
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} else if (rms_height >= peak_height) {
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fl_push_clip(x(), y()+(METER_HEIGHT - peak_height), w(), PEAK_HEIGHT+1);
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fl_draw_pixmap(level_xpm, x(), y());
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fl_pop_clip();
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} else {
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fl_push_clip(x(), y()+(METER_HEIGHT - peak_height), w(), peak_height - rms_height);
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if (peak_rms) {
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fl_draw_pixmap(iomixer_xpm, x()-20, y()-59);
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} else {
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fl_draw_pixmap(output_xpm, x()-20, y()-27);
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}
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fl_pop_clip();
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fl_push_clip(x(), y()+(METER_HEIGHT - peak_height)+(peak_height - rms_height), w(), PEAK_HEIGHT - (peak_height - rms_height));
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fl_draw_pixmap(level_xpm, x(), y());
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fl_pop_clip();
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}
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if (new_peak_height > 0) {
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fl_push_clip(x(), y()+(METER_HEIGHT-new_peak_height), w(), ((new_peak_height > METER_HEIGHT) ? METER_HEIGHT : new_peak_height));
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fl_draw_pixmap(peak_xpm, x(), y()+(METER_HEIGHT-new_peak_height));
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fl_pop_clip();
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}
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peak_height = new_peak_height;
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}
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fine_draw = 0;
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}
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int HDSPMixerMeter::logToHeight(double db)
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{
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double x;
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int h;
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double max_db;
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max_db = basew->setup->level_val ? 60.0 : 40.0;
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if (db < max_db) {
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x = (db /max_db) * double(METER_HEIGHT);
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h = METER_HEIGHT - (int)x;
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} else {
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h = 0;
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}
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if (h < 0) h = 0;
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return h;
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}
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void HDSPMixerMeter::update(int peak, int overs, int64 rms)
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{
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double fp, fr, db;
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int over = 0;
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if (!visible()) return;
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count++;
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if (overs >= basew->setup->over_val) {
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over = 1;
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}
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peak >>= 8;
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peak &= 0x7FFFFF;
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if (peak != 0) {
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fp = (double)peak / (double)(0x7FFFFF);
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db = -20 * log10(fp);
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} else {
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db = 1000.0;
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}
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switch (basew->setup->rate_val) {
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case 0:
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fast_peak_level += 0.030 * 8.3;
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break;
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case 1:
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fast_peak_level += 0.030 * 15;
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break;
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case 2:
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fast_peak_level += 0.030 * 23.7;
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break;
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}
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if (fast_peak_level > 138.47) fast_peak_level = 1000.0;
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if (db > fast_peak_level)
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db = fast_peak_level;
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else
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fast_peak_level = db;
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new_peak_height = logToHeight(db);
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fr = (double)rms;
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fr /= ((double)(1125899638407184.0)*(double)(8191.0));
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fr = sqrt(fr);
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if (!peak_rms && (basew->cards[basew->current_card]->type != H9652)) {
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new_rms_height = new_peak_height;
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} else {
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fr = -20 * log10(fr);
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if (basew->setup->rmsplus3_val) {
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fr -= 3.010299957;
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if (fr < 0.0) fr = 0.0;
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}
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if (basew->setup->numbers_val == 0) db = fr;
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new_rms_height = logToHeight(fr);
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}
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if (new_rms_height != rms_height || (new_peak_height != peak_height && (peak_rms || basew->cards[basew->current_card]->type == H9652))) {
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/* FIXME: may not be SMP safe */
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redraw();
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}
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if (db < max_level) max_level = db;
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if (count > 15 || over) {
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count = 0;
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if (max_level != slow_peak_level) {
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peaktext->update(max_level, over);
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slow_peak_level = max_level;
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}
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max_level = 1000.0;
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}
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}
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