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livetrax/libs/surfaces/tranzport/show.cc

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/*
* Copyright (C) 2006 Paul Davis
* Copyright (C) 2007 Michael Taht
*
* 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 <iostream>
#include <algorithm>
#include <cmath>
#define __STDC_FORMAT_MACROS
#include <inttypes.h>
#include <float.h>
#include <sys/time.h>
#include <errno.h>
#include "pbd/pthread_utils.h"
#include "ardour/route.h"
#include "ardour/audio_track.h"
#include "ardour/session.h"
#include "ardour/tempo.h"
#include "ardour/location.h"
#include "ardour/dB.h"
#include "tranzport_control_protocol.h"
using namespace ARDOUR;
using namespace std;
using namespace sigc;
using namespace PBD;
#include "i18n.h"
#include "pbd/abstract_ui.cc"
float
log_meter (float db)
{
float def = 0.0f; /* Meter deflection %age */
if (db < -70.0f) return 0.0f;
if (db > 6.0f) return 1.0f;
if (db < -60.0f) {
def = (db + 70.0f) * 0.25f;
} else if (db < -50.0f) {
def = (db + 60.0f) * 0.5f + 2.5f;
} else if (db < -40.0f) {
def = (db + 50.0f) * 0.75f + 7.5f;
} else if (db < -30.0f) {
def = (db + 40.0f) * 1.5f + 15.0f;
} else if (db < -20.0f) {
def = (db + 30.0f) * 2.0f + 30.0f;
} else if (db < 6.0f) {
def = (db + 20.0f) * 2.5f + 50.0f;
}
/* 115 is the deflection %age that would be
when db=6.0. this is an arbitrary
endpoint for our scaling.
*/
return def/115.0f;
}
#define TRANZ_U 0x1 /* upper */
#define TRANZ_BL 0x2 /* lower left */
#define TRANZ_Q2 0x3 /* 2 quadrant block */
#define TRANZ_ULB 0x4 /* Upper + lower left */
#define TRANZ_L 0x5 /* lower */
#define TRANZ_UBL 0x6 /* upper left + bottom all */
#define TRANZ_Q4 0x7 /* 4 quadrant block */
#define TRANZ_UL 0x08 /* upper left */
// Shift Space - switches your "view"
// Currently defined views are:
// BigMeter
//
// Shift Record - SAVE SNAPSHOT
// Somewhere I was rewriting this
// Other meters
// Inverted - show meters "inside out" For example 4 meters covering 2 cells each, and the
//
// each 4 character cell could be an 8 bar meter = 10 meters!
// Dual Meter mode - master and current track
// We have 16 rows of pixels so we COULD do a vertical meter
// BEAT BLOCKS - For each beat, flash a 8 block (could use the center for vertical meters)
// Could have something generic that could handle up to /20 time
// Odd times could flash the whole top bar for the first beat
// Vertical Meter _ .colon - + ucolon A P R I H FULLBLACK
// MV@$%&*()-
// 3 char block rotating beat `\'/
// 1 char rotating beat {/\}
// 4 char in block rotating beat {/\}
// {\/)
void TranzportControlProtocol::show_mini_meter()
{
// FIXME - show the current marker in passing
const int meter_buf_size = 41;
static uint32_t last_meter_fill_l = 0;
static uint32_t last_meter_fill_r = 0;
uint32_t meter_size;
float speed = fabsf(session->transport_speed());
char buf[meter_buf_size];
if (speed == 1.0) {
meter_size = 32;
}
if (speed == 0.0) {
meter_size = 20; // not actually reached
}
if (speed > 0.0 && (speed < 1.0)) {
meter_size = 20; // may shrink more one day
}
if (speed > 1.0 && (speed < 2.0)) {
meter_size = 20;
}
if (speed >= 2.0) {
meter_size = 24;
}
// you only seem to get a route_table[0] == 0 on moving forward - bug in next_track?
if (route_table[0] == 0) {
// Principle of least surprise
print (1, 0, "NoAUDIO ");
return;
}
float level_l = route_get_peak_input_power (0, 0);
float fraction_l = log_meter (level_l);
// how to figure out if we are mono?
float level_r = route_get_peak_input_power (0, 1);
float fraction_r = log_meter (level_r);
uint32_t fill_left = (uint32_t) floor (fraction_l * ((int) meter_size));
uint32_t fill_right = (uint32_t) floor (fraction_r * ((int) meter_size));
if (fill_left == last_meter_fill_l && fill_right == last_meter_fill_r && !lcd_isdamaged(1,0,meter_size/2)) {
/* nothing to do */
return;
}
last_meter_fill_l = fill_left; last_meter_fill_r = fill_right;
// give some feedback when overdriving - override yellow and red lights
if (fraction_l > 0.96 || fraction_r > 0.96) {
light_on (LightLoop);
}
if (fraction_l == 1.0 || fraction_r == 1.0) {
light_on (LightTrackrec);
}
const uint8_t char_map[16] = { ' ', TRANZ_UL,
TRANZ_U, TRANZ_U,
TRANZ_BL, TRANZ_Q2,
TRANZ_Q2, TRANZ_ULB,
TRANZ_L, TRANZ_UBL,
' ',' ',
TRANZ_L, TRANZ_UBL,
TRANZ_Q4,TRANZ_Q4
};
unsigned int val,j,i;
for(j = 1, i = 0; i < meter_size/2; i++, j+=2) {
val = (fill_left >= j) | ((fill_left >= j+1) << 1) |
((fill_right >=j) << 2) | ((fill_right >= j+1) << 3);
buf[i] = char_map[val];
}
/* print() requires this */
buf[meter_size/2] = '\0';
print (1, 0, buf);
/* Add a peak bar, someday do falloff */
// char peak[2]; peak[0] = ' '; peak[1] = '\0';
// if(fraction_l == 1.0 || fraction_r == 1.0) peak[0] = 'P';
// print (1,8,peak); // Put a peak meter - P in if we peaked.
}
void
TranzportControlProtocol::show_meter ()
{
// you only seem to get a route_table[0] on moving forward - bug elsewhere
if (route_table[0] == 0) {
// Principle of least surprise
print (0, 0, "No audio to meter!!!");
print (1, 0, "Select another track");
return;
}
float level = route_get_peak_input_power (0, 0);
float fraction = log_meter (level);
/* Someday add a peak bar*/
/* we draw using a choice of a sort of double colon-like character ("::") or a single, left-aligned ":".
the screen is 20 chars wide, so we can display 40 different levels. compute the level,
then figure out how many "::" to fill. if the answer is odd, make the last one a ":"
*/
uint32_t fill = (uint32_t) floor (fraction * 40);
char buf[21];
uint32_t i;
if (fill == last_meter_fill) {
/* nothing to do */
return;
}
last_meter_fill = fill;
bool add_single_level = (fill % 2 != 0);
fill /= 2;
if (fraction > 0.96) {
light_on (LightLoop);
}
if (fraction == 1.0) {
light_on (LightTrackrec);
}
/* add all full steps */
for (i = 0; i < fill; ++i) {
buf[i] = 0x07; /* tranzport special code for 4 quadrant LCD block */
}
/* add a possible half-step */
if (i < 20 && add_single_level) {
buf[i] = 0x03; /* tranzport special code for 2 left quadrant LCD block */
++i;
}
/* fill rest with space */
for (; i < 20; ++i) {
buf[i] = ' ';
}
/* print() requires this */
buf[20] = '\0';
print (0, 0, buf);
print (1, 0, buf);
}
void
TranzportControlProtocol::show_bbt (nframes_t where)
{
if (where != last_where) {
char buf[16];
BBT_Time bbt;
// When recording or playing back < 1.0 speed do 1 or 2
// FIXME - clean up state machine & break up logic
// this has to co-operate with the mini-meter and
// this is NOT the right way.
session->tempo_map().bbt_time (where, bbt);
last_bars = bbt.bars;
last_beats = bbt.beats;
last_ticks = bbt.ticks;
last_where = where;
float speed = fabsf(session->transport_speed());
if (speed == 1.0) {
sprintf (buf, "%03" PRIu32 "%1" PRIu32, bbt.bars,bbt.beats); // switch to hex one day
print (1, 16, buf);
}
if (speed == 0.0) {
sprintf (buf, "%03" PRIu32 "|%1" PRIu32 "|%04" PRIu32, bbt.bars,bbt.beats,bbt.ticks);
print (1, 10, buf);
}
if (speed > 0.0 && (speed < 1.0)) {
sprintf (buf, "%03" PRIu32 "|%1" PRIu32 "|%04" PRIu32, bbt.bars,bbt.beats,bbt.ticks);
print (1, 10, buf);
}
if (speed > 1.0 && (speed < 2.0)) {
sprintf (buf, "%03" PRIu32 "|%1" PRIu32 "|%04" PRIu32, bbt.bars,bbt.beats,bbt.ticks);
print (1, 10, buf);
}
if (speed >= 2.0) {
sprintf (buf, "%03" PRIu32 "|%1" PRIu32 "|%02" PRIu32, bbt.bars,bbt.beats,bbt.ticks);
print (1, 12, buf);
}
TempoMap::Metric m (session->tempo_map().metric_at (where));
// the lights stop working well at above 100 bpm so don't bother
if(m.tempo().beats_per_minute() < 101.0 && (speed > 0.0)) {
// something else can reset these, so we need to
lights_pending[LightRecord] = false;
lights_pending[LightAnysolo] = false;
switch(last_beats) {
case 1: if(last_ticks < 250 || last_ticks >= 0) lights_pending[LightRecord] = true; break;
default: if(last_ticks < 250) lights_pending[LightAnysolo] = true;
}
}
}
}
void
TranzportControlProtocol::show_transport_time ()
{
nframes_t where = session->transport_frame();
show_bbt(where);
}
void
TranzportControlProtocol::show_timecode (nframes_t where)
{
if ((where != last_where) || lcd_isdamaged(1,9,10)) {
char buf[5];
Timecode::Time timecode;
session->timecode_time (where, timecode);
if (timecode.negative) {
sprintf (buf, "-%02" PRIu32 ":", timecode.hours);
} else {
sprintf (buf, " %02" PRIu32 ":", timecode.hours);
}
print (1, 8, buf);
sprintf (buf, "%02" PRIu32 ":", timecode.minutes);
print (1, 12, buf);
sprintf (buf, "%02" PRIu32 ":", timecode.seconds);
print (1, 15, buf);
sprintf (buf, "%02" PRIu32, timecode.frames);
print_noretry (1, 18, buf);
last_where = where;
}
}
void
TranzportControlProtocol::show_track_gain ()
{
// FIXME last_track gain has to become meter/track specific
if (route_table[0]) {
gain_t g = route_get_gain (0);
if ((g != last_track_gain) || lcd_isdamaged(0,12,8)) {
char buf[16];
snprintf (buf, sizeof (buf), "%6.1fdB", coefficient_to_dB (route_get_effective_gain (0)));
print (0, 12, buf);
last_track_gain = g;
}
} else {
print (0, 9, " ");
}
}