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Add input port signal meters, scopes and monitors

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This commit is contained in:
Robin Gareus 2020-10-26 15:52:17 +01:00
parent 9a7379dfff
commit 8ba7df9105
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
4 changed files with 258 additions and 4 deletions
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77
libs/ardour/ardour/port_manager.h
View File

@ -42,11 +42,55 @@ class PortEngine;
class AudioBackend;
class Session;
class CircularSampleBuffer;
class CircularEventBuffer;
class LIBARDOUR_API PortManager
{
public:
typedef std::map<std::string, boost::shared_ptr<Port> > Ports;
typedef std::list<boost::shared_ptr<Port> > PortList;
struct DPM {
DPM ()
{
reset ();
}
void reset ()
{
level = 0;
peak = 0;
}
Sample level;
Sample peak;
};
struct MPM {
MPM ()
{
reset ();
}
void reset ()
{
memset (chn_active, 0, sizeof (float) * 17);
}
bool active (int chn) const {
if (chn < 0 || chn > 16) {
return false;
}
return chn_active[chn] > 0.1;
}
/* 0..15: MIDI Channel Event, 16: System Common Message */
float chn_active[17];
};
typedef std::map<std::string, boost::shared_ptr<Port>> Ports;
typedef std::list<boost::shared_ptr<Port>> PortList;
typedef boost::shared_ptr<CircularSampleBuffer> AudioPortScope;
typedef std::map<std::string, AudioPortScope> AudioPortScopes;
typedef std::map<std::string, DPM> AudioPortMeters;
typedef boost::shared_ptr<CircularEventBuffer> MIDIPortMonitor;
typedef std::map<std::string, MIDIPortMonitor> MIDIPortMonitors;
typedef std::map<std::string, MPM> MIDIPortMeters;
PortManager ();
virtual ~PortManager () {}
@ -199,6 +243,26 @@ public:
*/
PBD::Signal5<void, boost::weak_ptr<Port>, std::string, boost::weak_ptr<Port>, std::string, bool> PortConnectedOrDisconnected;
void reset_input_meters ();
AudioPortMeters const& input_meters () const
{
return _audio_port_meters;
}
AudioPortScopes const& input_scopes () const
{
return _audio_port_scopes;
}
MIDIPortMeters const& midi_meters () const
{
return _midi_port_meters;
}
MIDIPortMonitors const& midi_monitors () const
{
return _midi_port_monitors;
}
protected:
boost::shared_ptr<AudioBackend> _backend;
@ -245,6 +309,15 @@ protected:
void filter_midi_ports (std::vector<std::string>&, MidiPortFlags, MidiPortFlags);
void set_port_buffer_sizes (pframes_t);
private:
void run_input_meters (pframes_t, samplecnt_t);
AudioPortMeters _audio_port_meters;
AudioPortScopes _audio_port_scopes;
MIDIPortMeters _midi_port_meters;
MIDIPortMonitors _midi_port_monitors;
volatile gint _reset_meters;
};
} // namespace ARDOUR

2
libs/ardour/audioengine.cc
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@ -301,7 +301,7 @@ AudioEngine::process_callback (pframes_t nframes)
if (_session && _init_countdown > 0) {
--_init_countdown;
/* Warm up caches */
PortManager::cycle_start (nframes);
PortManager::cycle_start (nframes, _session);
_session->process (nframes);
PortManager::silence (nframes);
PortManager::cycle_end (nframes);

25
libs/ardour/luabindings.cc
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@ -819,7 +819,7 @@ LuaBindings::common (lua_State* L)
.beginClass <PBD::PropertyChange> ("PropertyChange")
// TODO add special handling (std::set<PropertyID>), PropertyID is a GQuark.
// -> direct map to lua table beginStdSet()A
// -> direct map to lua table beginStdSet()
//
// expand templated PropertyDescriptor<T>
.addFunction ("containsBool", &PBD::PropertyChange::contains<bool>)
@ -1396,6 +1396,19 @@ LuaBindings::common (lua_State* L)
.endNamespace () /* ARDOUR::MidiModel */
.beginClass <PortManager::DPM> ("DPM")
.addVoidConstructor ()
.addFunction ("reset", &PortManager::DPM::reset)
.addData ("level", &PortManager::DPM::level, false)
.addData ("peak", &PortManager::DPM::peak, false)
.endClass ()
.beginClass <PortManager::MPM> ("MPM")
.addVoidConstructor ()
.addFunction ("reset", &PortManager::MPM::reset)
.addFunction ("active", &PortManager::MPM::active)
.endClass ()
.beginClass <Plugin::PresetRecord> ("PresetRecord")
.addVoidConstructor ()
.addData ("uri", &Plugin::PresetRecord::uri, false)
@ -1774,6 +1787,14 @@ LuaBindings::common (lua_State* L)
.beginStdMap <PBD::ID,boost::shared_ptr<Region> > ("RegionMap")
.endClass ()
// typedef std::map<std::string, DPM> PortManager::AudioPortMeters;
.beginStdMap <std::string, PortManager::DPM> ("AudioPortMeters")
.endClass ()
// typedef std::map<std::string, MPM> PortManager::MIDIPortMeters;
.beginStdMap <std::string, PortManager::MPM> ("MIDIPortMeters")
.endClass ()
// typedef std::list<boost::shared_ptr<Processor> > ProcessorList
.beginStdList <boost::shared_ptr<Processor> > ("ProcessorList")
.endClass ()
@ -2335,6 +2356,8 @@ LuaBindings::common (lua_State* L)
.addFunction ("get_physical_inputs", &PortManager::get_physical_inputs)
.addFunction ("n_physical_outputs", &PortManager::n_physical_outputs)
.addFunction ("n_physical_inputs", &PortManager::n_physical_inputs)
.addFunction ("reset_input_meters", &PortManager::reset_input_meters)
.addFunction ("input_meters", &PortManager::input_meters)
.addRefFunction ("get_connections", &PortManager::get_connections)
.addRefFunction ("get_ports", (int (PortManager::*)(DataType, PortManager::PortList&))&PortManager::get_ports)
.addRefFunction ("get_backend_ports", (int (PortManager::*)(const std::string&, DataType, PortFlags, std::vector<std::string>&))&PortManager::get_ports)

158
libs/ardour/port_manager.cc
View File

@ -37,6 +37,7 @@
#include "ardour/async_midi_port.h"
#include "ardour/audio_backend.h"
#include "ardour/audio_port.h"
#include "ardour/circular_buffer.h"
#include "ardour/debug.h"
#include "ardour/filesystem_paths.h"
#include "ardour/midi_port.h"
@ -633,6 +634,12 @@ PortManager::reestablish_ports ()
return -1;
}
_audio_port_scopes.clear();
_audio_port_meters.clear();
_midi_port_monitors.clear();
_midi_port_meters.clear();
run_input_meters (0, 0);
return 0;
}
@ -821,6 +828,8 @@ PortManager::cycle_start (pframes_t nframes, Session* s)
}
}
}
run_input_meters (nframes, s ? s->nominal_sample_rate () : 0);
}
void
@ -1403,3 +1412,152 @@ PortManager::check_for_ambiguous_latency (bool log) const
}
return rv;
}
void
PortManager::reset_input_meters ()
{
g_atomic_int_set (&_reset_meters, 1);
}
/* Cache dB -> coefficient calculation for dB/sec falloff.
* @n_samples engine-buffer-size
* @rate engine sample-rate
* @return coefficiant taking user preferences meter_falloff (dB/sec) into account
*/
struct FallOffCache
{
FallOffCache ()
: _falloff (1.0)
, _cfg_db_s (0)
, _n_samples (0)
, _rate (0)
{}
float calc (pframes_t n_samples, samplecnt_t rate)
{
if (n_samples == 0 || rate == 0) {
return 1.0;
}
if (Config->get_meter_falloff () != _cfg_db_s || n_samples != _n_samples || rate != _rate) {
_cfg_db_s = Config->get_meter_falloff ();
_n_samples = n_samples;
_rate = rate;
#ifdef _GNU_SOURCE
_falloff = exp10f (-0.05f * _cfg_db_s * _n_samples / _rate);
#else
_falloff = powf (10.f, -0.05f * _cfg_db_s * _n_samples / _rate);
#endif
}
return _falloff;
}
private:
float _falloff;
float _cfg_db_s;
pframes_t _n_samples;
samplecnt_t _rate;
};
static FallOffCache falloff_cache;
void
PortManager::run_input_meters (pframes_t n_samples, samplecnt_t rate)
{
const bool reset = g_atomic_int_compare_and_exchange (&_reset_meters, 1, 0);
const float falloff = falloff_cache.calc (n_samples, rate);
/* calculate peak of all physical inputs (readable ports) */
std::vector<std::string> port_names;
get_physical_inputs (DataType::AUDIO, port_names);
for (std::vector<std::string>::iterator p = port_names.begin(); p != port_names.end(); ++p) {
if (port_is_mine (*p)) {
continue;
}
PortEngine::PortHandle ph = _backend->get_port_by_name (*p);
if (!ph) {
continue;
}
if (n_samples == 0) {
/* allocate using default c'tor */
_audio_port_meters[*p];
_audio_port_scopes[*p] = AudioPortScope (new CircularSampleBuffer (524288)); // 2^19 ~ 1MB / port
continue;
}
if (reset) {
_audio_port_meters[*p].reset ();
}
Sample* buf = (Sample*) _backend->get_buffer (ph, n_samples);
if (!buf) {
continue;
}
_audio_port_scopes[*p]->write (buf, n_samples);
/* falloff */
if (_audio_port_meters[*p].level > 1e-10) {
_audio_port_meters[*p].level *= falloff;
} else {
_audio_port_meters[*p].level = 0;
}
_audio_port_meters[*p].level = compute_peak (buf, n_samples, reset ? 0 : _audio_port_meters[*p].level);
_audio_port_meters[*p].level = std::min (_audio_port_meters[*p].level, 100.f); // cut off at +40dBFS for falloff.
_audio_port_meters[*p].peak = std::max (_audio_port_meters[*p].peak, _audio_port_meters[*p].level);
}
/* MIDI */
port_names.clear ();
get_physical_inputs (DataType::MIDI, port_names);
for (std::vector<std::string>::iterator p = port_names.begin(); p != port_names.end(); ++p) {
if (port_is_mine (*p)) {
continue;
}
PortEngine::PortHandle ph = _backend->get_port_by_name (*p);
if (!ph) {
continue;
}
if (n_samples == 0) {
/* allocate using default c'tor */
_midi_port_meters[*p];
_midi_port_monitors[*p] = MIDIPortMonitor (new CircularEventBuffer (32));
continue;
}
for (size_t i = 0; i < 17; ++i) {
/* falloff */
if (_midi_port_meters[*p].chn_active[i] > 1e-10) {
_midi_port_meters[*p].chn_active[i] *= falloff;
} else {
_midi_port_meters[*p].chn_active[i] = 0;
}
}
void* buffer = _backend->get_buffer (ph, n_samples);
const pframes_t event_count = _backend->get_midi_event_count (buffer);
for (pframes_t i = 0; i < event_count; ++i) {
pframes_t timestamp;
size_t size;
uint8_t const* buf;
_backend->midi_event_get (timestamp, size, &buf, buffer, i);
if (buf[0] == 0xfe) {
/* ignore active sensing */
continue;
}
if ((buf[0] & 0xf0) == 0xf0) {
_midi_port_meters[*p].chn_active[16] = 1.0;
} else {
int chn = (buf[0] & 0x0f);
_midi_port_meters[*p].chn_active[chn] = 1.0;
}
_midi_port_monitors[*p]->write (buf, size);
}
}
}