1969 lines
49 KiB
C++
1969 lines
49 KiB
C++
/*
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* Copyright (C) 2014 Robin Gareus <robin@gareus.org>
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* Copyright (C) 2013 Paul Davis
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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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#include <sys/time.h>
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#include <regex.h>
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#include <stdlib.h>
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#include <glibmm.h>
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#ifdef PLATFORM_WINDOWS
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#include <windows.h>
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#endif
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#include "dummy_audiobackend.h"
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#include "dummy_midi_seq.h"
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#include "pbd/error.h"
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#include "ardour/port_manager.h"
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#include "i18n.h"
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using namespace ARDOUR;
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static std::string s_instance_name;
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size_t DummyAudioBackend::_max_buffer_size = 8192;
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std::vector<std::string> DummyAudioBackend::_midi_options;
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std::vector<AudioBackend::DeviceStatus> DummyAudioBackend::_device_status;
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#ifdef PLATFORM_WINDOWS
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static double _win_pc_rate = 0; // usec per tick
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#endif
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static int64_t _x_get_monotonic_usec() {
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#ifdef PLATFORM_WINDOWS
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if (_win_pc_rate > 0) {
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LARGE_INTEGER Count;
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// not very reliable, but the only realistic way for sub milli-seconds
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if (QueryPerformanceCounter (&Count)) {
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return (int64_t) (Count.QuadPart * _win_pc_rate);
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}
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return -1;
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}
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#endif
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return g_get_monotonic_time();
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}
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DummyAudioBackend::DummyAudioBackend (AudioEngine& e, AudioBackendInfo& info)
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: AudioBackend (e, info)
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, _running (false)
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, _freewheel (false)
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, _freewheeling (false)
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, _device ("")
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, _samplerate (48000)
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, _samples_per_period (1024)
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, _dsp_load (0)
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, _n_inputs (0)
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, _n_outputs (0)
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, _n_midi_inputs (0)
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, _n_midi_outputs (0)
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, _midi_mode (MidiNoEvents)
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, _systemic_input_latency (0)
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, _systemic_output_latency (0)
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, _processed_samples (0)
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, _port_change_flag (false)
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{
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_instance_name = s_instance_name;
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_device = _("Silence");
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pthread_mutex_init (&_port_callback_mutex, 0);
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}
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DummyAudioBackend::~DummyAudioBackend ()
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{
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pthread_mutex_destroy (&_port_callback_mutex);
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}
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/* AUDIOBACKEND API */
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std::string
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DummyAudioBackend::name () const
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{
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return X_("Dummy"); // internal name
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}
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bool
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DummyAudioBackend::is_realtime () const
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{
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return false;
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}
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std::vector<AudioBackend::DeviceStatus>
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DummyAudioBackend::enumerate_devices () const
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{
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if (_device_status.empty()) {
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_device_status.push_back (DeviceStatus (_("Silence"), true));
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_device_status.push_back (DeviceStatus (_("Sine Wave"), true));
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_device_status.push_back (DeviceStatus (_("Square Wave"), true));
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_device_status.push_back (DeviceStatus (_("Impulses"), true));
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_device_status.push_back (DeviceStatus (_("Uniform White Noise"), true));
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_device_status.push_back (DeviceStatus (_("Gaussian White Noise"), true));
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_device_status.push_back (DeviceStatus (_("Pink Noise"), true));
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_device_status.push_back (DeviceStatus (_("Pink Noise (low CPU)"), true));
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_device_status.push_back (DeviceStatus (_("Sine Sweep"), true));
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_device_status.push_back (DeviceStatus (_("Sine Sweep Swell"), true));
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_device_status.push_back (DeviceStatus (_("Square Sweep"), true));
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_device_status.push_back (DeviceStatus (_("Square Sweep Swell"), true));
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_device_status.push_back (DeviceStatus (_("Loopback"), true));
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}
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return _device_status;
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}
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std::vector<float>
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DummyAudioBackend::available_sample_rates (const std::string&) const
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{
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std::vector<float> sr;
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sr.push_back (8000.0);
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sr.push_back (22050.0);
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sr.push_back (24000.0);
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sr.push_back (44100.0);
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sr.push_back (48000.0);
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sr.push_back (88200.0);
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sr.push_back (96000.0);
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sr.push_back (176400.0);
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sr.push_back (192000.0);
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return sr;
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}
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std::vector<uint32_t>
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DummyAudioBackend::available_buffer_sizes (const std::string&) const
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{
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std::vector<uint32_t> bs;
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bs.push_back (4);
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bs.push_back (8);
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bs.push_back (16);
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bs.push_back (32);
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bs.push_back (64);
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bs.push_back (128);
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bs.push_back (256);
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bs.push_back (512);
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bs.push_back (1024);
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bs.push_back (2048);
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bs.push_back (4096);
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bs.push_back (8192);
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return bs;
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}
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uint32_t
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DummyAudioBackend::available_input_channel_count (const std::string&) const
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{
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return 128;
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}
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uint32_t
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DummyAudioBackend::available_output_channel_count (const std::string&) const
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{
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return 128;
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}
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bool
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DummyAudioBackend::can_change_sample_rate_when_running () const
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{
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return true;
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}
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bool
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DummyAudioBackend::can_change_buffer_size_when_running () const
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{
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return true;
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}
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int
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DummyAudioBackend::set_device_name (const std::string& d)
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{
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_device = d;
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return 0;
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}
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int
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DummyAudioBackend::set_sample_rate (float sr)
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{
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if (sr <= 0) { return -1; }
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_samplerate = sr;
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engine.sample_rate_change (sr);
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return 0;
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}
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int
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DummyAudioBackend::set_buffer_size (uint32_t bs)
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{
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if (bs <= 0 || bs >= _max_buffer_size) {
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return -1;
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}
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_samples_per_period = bs;
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/* update port latencies
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* with 'Loopback' there is exactly once cycle latency,
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* divide it between In + Out;
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*/
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LatencyRange lr;
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lr.min = lr.max = _systemic_input_latency;
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for (std::vector<DummyAudioPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
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set_latency_range (*it, false, lr);
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}
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for (std::vector<DummyMidiPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it) {
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set_latency_range (*it, false, lr);
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}
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lr.min = lr.max = _systemic_output_latency;
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for (std::vector<DummyAudioPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) {
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set_latency_range (*it, true, lr);
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}
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for (std::vector<DummyMidiPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
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set_latency_range (*it, true, lr);
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}
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engine.buffer_size_change (bs);
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return 0;
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}
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int
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DummyAudioBackend::set_interleaved (bool yn)
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{
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if (!yn) { return 0; }
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return -1;
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}
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int
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DummyAudioBackend::set_input_channels (uint32_t cc)
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{
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_n_inputs = cc;
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return 0;
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}
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int
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DummyAudioBackend::set_output_channels (uint32_t cc)
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{
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_n_outputs = cc;
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return 0;
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}
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int
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DummyAudioBackend::set_systemic_input_latency (uint32_t sl)
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{
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_systemic_input_latency = sl;
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return 0;
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}
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int
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DummyAudioBackend::set_systemic_output_latency (uint32_t sl)
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{
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_systemic_output_latency = sl;
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return 0;
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}
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/* Retrieving parameters */
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std::string
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DummyAudioBackend::device_name () const
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{
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return _device;
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}
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float
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DummyAudioBackend::sample_rate () const
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{
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return _samplerate;
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}
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uint32_t
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DummyAudioBackend::buffer_size () const
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{
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return _samples_per_period;
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}
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bool
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DummyAudioBackend::interleaved () const
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{
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return false;
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}
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uint32_t
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DummyAudioBackend::input_channels () const
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{
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return _n_inputs;
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}
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uint32_t
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DummyAudioBackend::output_channels () const
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{
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return _n_outputs;
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}
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uint32_t
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DummyAudioBackend::systemic_input_latency () const
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{
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return _systemic_input_latency;
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}
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uint32_t
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DummyAudioBackend::systemic_output_latency () const
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{
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return _systemic_output_latency;
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}
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/* MIDI */
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std::vector<std::string>
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DummyAudioBackend::enumerate_midi_options () const
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{
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if (_midi_options.empty()) {
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_midi_options.push_back (_("1 in, 1 out, Silence"));
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_midi_options.push_back (_("2 in, 2 out, Silence"));
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_midi_options.push_back (_("8 in, 8 out, Silence"));
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_midi_options.push_back (_("Midi Event Generators"));
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_midi_options.push_back (_("8 in, 8 out, Loopback"));
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_midi_options.push_back (_("MIDI to Audio, Loopback"));
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_midi_options.push_back (_("No MIDI I/O"));
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}
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return _midi_options;
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}
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int
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DummyAudioBackend::set_midi_option (const std::string& opt)
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{
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_midi_mode = MidiNoEvents;
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if (opt == _("1 in, 1 out, Silence")) {
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_n_midi_inputs = _n_midi_outputs = 1;
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}
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else if (opt == _("2 in, 2 out, Silence")) {
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_n_midi_inputs = _n_midi_outputs = 2;
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}
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else if (opt == _("8 in, 8 out, Silence")) {
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_n_midi_inputs = _n_midi_outputs = 8;
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}
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else if (opt == _("Midi Event Generators")) {
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_n_midi_inputs = _n_midi_outputs = NUM_MIDI_EVENT_GENERATORS;
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_midi_mode = MidiGenerator;
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}
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else if (opt == _("8 in, 8 out, Loopback")) {
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_n_midi_inputs = _n_midi_outputs = 8;
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_midi_mode = MidiLoopback;
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}
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else if (opt == _("MIDI to Audio, Loopback")) {
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_n_midi_inputs = _n_midi_outputs = UINT32_MAX;
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_midi_mode = MidiToAudio;
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}
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else {
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_n_midi_inputs = _n_midi_outputs = 0;
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}
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return 0;
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}
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std::string
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DummyAudioBackend::midi_option () const
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{
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return ""; // TODO
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}
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/* State Control */
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static void * pthread_process (void *arg)
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{
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DummyAudioBackend *d = static_cast<DummyAudioBackend *>(arg);
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d->main_process_thread ();
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pthread_exit (0);
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return 0;
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}
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int
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DummyAudioBackend::_start (bool /*for_latency_measurement*/)
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{
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if (_running) {
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PBD::error << _("DummyAudioBackend: already active.") << endmsg;
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return -1;
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}
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if (_ports.size()) {
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PBD::warning << _("DummyAudioBackend: recovering from unclean shutdown, port registry is not empty.") << endmsg;
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for (std::vector<DummyPort*>::const_iterator it = _ports.begin (); it != _ports.end (); ++it) {
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PBD::info << _("DummyAudioBackend: port '") << (*it)->name () << "' exists." << endmsg;
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}
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_system_inputs.clear();
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_system_outputs.clear();
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_system_midi_in.clear();
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_system_midi_out.clear();
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_ports.clear();
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}
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if (register_system_ports()) {
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PBD::error << _("DummyAudioBackend: failed to register system ports.") << endmsg;
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return -1;
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}
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engine.sample_rate_change (_samplerate);
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engine.buffer_size_change (_samples_per_period);
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if (engine.reestablish_ports ()) {
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PBD::error << _("DummyAudioBackend: Could not re-establish ports.") << endmsg;
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stop ();
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return -1;
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}
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engine.reconnect_ports ();
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_port_change_flag = false;
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if (pthread_create (&_main_thread, NULL, pthread_process, this)) {
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PBD::error << _("DummyAudioBackend: cannot start.") << endmsg;
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}
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int timeout = 5000;
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while (!_running && --timeout > 0) { Glib::usleep (1000); }
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if (timeout == 0 || !_running) {
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PBD::error << _("DummyAudioBackend: failed to start process thread.") << endmsg;
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return -1;
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}
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return 0;
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}
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int
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DummyAudioBackend::stop ()
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{
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void *status;
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if (!_running) {
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return 0;
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}
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_running = false;
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if (pthread_join (_main_thread, &status)) {
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PBD::error << _("DummyAudioBackend: failed to terminate.") << endmsg;
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return -1;
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}
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unregister_ports();
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return 0;
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}
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int
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DummyAudioBackend::freewheel (bool onoff)
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{
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_freewheeling = onoff;
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return 0;
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}
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float
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DummyAudioBackend::dsp_load () const
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{
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return 100.f * _dsp_load;
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}
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size_t
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DummyAudioBackend::raw_buffer_size (DataType t)
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{
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switch (t) {
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case DataType::AUDIO:
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return _samples_per_period * sizeof(Sample);
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case DataType::MIDI:
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return _max_buffer_size; // XXX not really limited
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}
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return 0;
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}
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/* Process time */
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framepos_t
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DummyAudioBackend::sample_time ()
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{
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return _processed_samples;
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}
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framepos_t
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DummyAudioBackend::sample_time_at_cycle_start ()
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{
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return _processed_samples;
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}
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pframes_t
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DummyAudioBackend::samples_since_cycle_start ()
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{
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return 0;
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}
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void *
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DummyAudioBackend::dummy_process_thread (void *arg)
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{
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ThreadData* td = reinterpret_cast<ThreadData*> (arg);
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boost::function<void ()> f = td->f;
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delete td;
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f ();
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return 0;
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}
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int
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DummyAudioBackend::create_process_thread (boost::function<void()> func)
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{
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pthread_t thread_id;
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pthread_attr_t attr;
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size_t stacksize = 100000;
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pthread_attr_init (&attr);
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pthread_attr_setstacksize (&attr, stacksize);
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ThreadData* td = new ThreadData (this, func, stacksize);
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if (pthread_create (&thread_id, &attr, dummy_process_thread, td)) {
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PBD::error << _("AudioEngine: cannot create process thread.") << endmsg;
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pthread_attr_destroy (&attr);
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return -1;
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}
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pthread_attr_destroy (&attr);
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_threads.push_back (thread_id);
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return 0;
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}
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int
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DummyAudioBackend::join_process_threads ()
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{
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int rv = 0;
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for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
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{
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void *status;
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if (pthread_join (*i, &status)) {
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PBD::error << _("AudioEngine: cannot terminate process thread.") << endmsg;
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rv -= 1;
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}
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}
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_threads.clear ();
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return rv;
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}
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bool
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DummyAudioBackend::in_process_thread ()
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{
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if (pthread_equal (_main_thread, pthread_self()) != 0) {
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|
return true;
|
|
}
|
|
|
|
for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
|
|
{
|
|
if (pthread_equal (*i, pthread_self ()) != 0) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
uint32_t
|
|
DummyAudioBackend::process_thread_count ()
|
|
{
|
|
return _threads.size ();
|
|
}
|
|
|
|
void
|
|
DummyAudioBackend::update_latencies ()
|
|
{
|
|
// trigger latency callback in RT thread (locked graph)
|
|
port_connect_add_remove_callback();
|
|
}
|
|
|
|
/* PORTENGINE API */
|
|
|
|
void*
|
|
DummyAudioBackend::private_handle () const
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
const std::string&
|
|
DummyAudioBackend::my_name () const
|
|
{
|
|
return _instance_name;
|
|
}
|
|
|
|
bool
|
|
DummyAudioBackend::available () const
|
|
{
|
|
return true;
|
|
}
|
|
|
|
uint32_t
|
|
DummyAudioBackend::port_name_size () const
|
|
{
|
|
return 256;
|
|
}
|
|
|
|
int
|
|
DummyAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
|
|
{
|
|
if (!valid_port (port)) {
|
|
PBD::error << _("DummyBackend::set_port_name: Invalid Port(s)") << endmsg;
|
|
return -1;
|
|
}
|
|
return static_cast<DummyPort*>(port)->set_name (_instance_name + ":" + name);
|
|
}
|
|
|
|
std::string
|
|
DummyAudioBackend::get_port_name (PortEngine::PortHandle port) const
|
|
{
|
|
if (!valid_port (port)) {
|
|
PBD::error << _("DummyBackend::get_port_name: Invalid Port(s)") << endmsg;
|
|
return std::string ();
|
|
}
|
|
return static_cast<DummyPort*>(port)->name ();
|
|
}
|
|
|
|
PortEngine::PortHandle
|
|
DummyAudioBackend::get_port_by_name (const std::string& name) const
|
|
{
|
|
PortHandle port = (PortHandle) find_port (name);
|
|
return port;
|
|
}
|
|
|
|
int
|
|
DummyAudioBackend::get_ports (
|
|
const std::string& port_name_pattern,
|
|
DataType type, PortFlags flags,
|
|
std::vector<std::string>& port_names) const
|
|
{
|
|
int rv = 0;
|
|
regex_t port_regex;
|
|
bool use_regexp = false;
|
|
if (port_name_pattern.size () > 0) {
|
|
if (!regcomp (&port_regex, port_name_pattern.c_str (), REG_EXTENDED|REG_NOSUB)) {
|
|
use_regexp = true;
|
|
}
|
|
}
|
|
for (size_t i = 0; i < _ports.size (); ++i) {
|
|
DummyPort* port = _ports[i];
|
|
if ((port->type () == type) && flags == (port->flags () & flags)) {
|
|
if (!use_regexp || !regexec (&port_regex, port->name ().c_str (), 0, NULL, 0)) {
|
|
port_names.push_back (port->name ());
|
|
++rv;
|
|
}
|
|
}
|
|
}
|
|
if (use_regexp) {
|
|
regfree (&port_regex);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
DataType
|
|
DummyAudioBackend::port_data_type (PortEngine::PortHandle port) const
|
|
{
|
|
if (!valid_port (port)) {
|
|
return DataType::NIL;
|
|
}
|
|
return static_cast<DummyPort*>(port)->type ();
|
|
}
|
|
|
|
PortEngine::PortHandle
|
|
DummyAudioBackend::register_port (
|
|
const std::string& name,
|
|
ARDOUR::DataType type,
|
|
ARDOUR::PortFlags flags)
|
|
{
|
|
if (name.size () == 0) { return 0; }
|
|
if (flags & IsPhysical) { return 0; }
|
|
if (!_running) {
|
|
PBD::info << _("DummyBackend::register_port: Engine is not running.") << endmsg;
|
|
}
|
|
return add_port (_instance_name + ":" + name, type, flags);
|
|
}
|
|
|
|
PortEngine::PortHandle
|
|
DummyAudioBackend::add_port (
|
|
const std::string& name,
|
|
ARDOUR::DataType type,
|
|
ARDOUR::PortFlags flags)
|
|
{
|
|
assert(name.size ());
|
|
if (find_port (name)) {
|
|
PBD::error << _("DummyBackend::register_port: Port already exists:")
|
|
<< " (" << name << ")" << endmsg;
|
|
return 0;
|
|
}
|
|
DummyPort* port = NULL;
|
|
switch (type) {
|
|
case DataType::AUDIO:
|
|
port = new DummyAudioPort (*this, name, flags);
|
|
break;
|
|
case DataType::MIDI:
|
|
port = new DummyMidiPort (*this, name, flags);
|
|
break;
|
|
default:
|
|
PBD::error << _("DummyBackend::register_port: Invalid Data Type.") << endmsg;
|
|
return 0;
|
|
}
|
|
|
|
_ports.push_back (port);
|
|
|
|
return port;
|
|
}
|
|
|
|
void
|
|
DummyAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
|
|
{
|
|
if (!_running) {
|
|
PBD::info << _("DummyBackend::unregister_port: Engine is not running.") << endmsg;
|
|
assert (!valid_port (port_handle));
|
|
return;
|
|
}
|
|
DummyPort* port = static_cast<DummyPort*>(port_handle);
|
|
std::vector<DummyPort*>::iterator i = std::find (_ports.begin (), _ports.end (), static_cast<DummyPort*>(port_handle));
|
|
if (i == _ports.end ()) {
|
|
PBD::error << _("DummyBackend::unregister_port: Failed to find port") << endmsg;
|
|
return;
|
|
}
|
|
disconnect_all(port_handle);
|
|
_ports.erase (i);
|
|
delete port;
|
|
}
|
|
|
|
int
|
|
DummyAudioBackend::register_system_ports()
|
|
{
|
|
LatencyRange lr;
|
|
enum DummyAudioPort::GeneratorType gt;
|
|
if (_device == _("Uniform White Noise")) {
|
|
gt = DummyAudioPort::UniformWhiteNoise;
|
|
} else if (_device == _("Gaussian White Noise")) {
|
|
gt = DummyAudioPort::GaussianWhiteNoise;
|
|
} else if (_device == _("Pink Noise")) {
|
|
gt = DummyAudioPort::PinkNoise;
|
|
} else if (_device == _("Pink Noise (low CPU)")) {
|
|
gt = DummyAudioPort::PonyNoise;
|
|
} else if (_device == _("Sine Wave")) {
|
|
gt = DummyAudioPort::SineWave;
|
|
} else if (_device == _("Square Wave")) {
|
|
gt = DummyAudioPort::SquareWave;
|
|
} else if (_device == _("Impulses")) {
|
|
gt = DummyAudioPort::KronekerDelta;
|
|
} else if (_device == _("Sine Sweep")) {
|
|
gt = DummyAudioPort::SineSweep;
|
|
} else if (_device == _("Sine Sweep Swell")) {
|
|
gt = DummyAudioPort::SineSweepSwell;
|
|
} else if (_device == _("Square Sweep")) {
|
|
gt = DummyAudioPort::SquareSweep;
|
|
} else if (_device == _("Square Sweep Swell")) {
|
|
gt = DummyAudioPort::SquareSweepSwell;
|
|
} else if (_device == _("Loopback")) {
|
|
gt = DummyAudioPort::Loopback;
|
|
} else {
|
|
gt = DummyAudioPort::Silence;
|
|
}
|
|
|
|
if (_midi_mode == MidiToAudio) {
|
|
gt = DummyAudioPort::Loopback;
|
|
}
|
|
|
|
const int a_ins = _n_inputs > 0 ? _n_inputs : 8;
|
|
const int a_out = _n_outputs > 0 ? _n_outputs : 8;
|
|
const int m_ins = _n_midi_inputs == UINT_MAX ? 0 : _n_midi_inputs;
|
|
const int m_out = _n_midi_outputs == UINT_MAX ? a_ins : _n_midi_outputs;
|
|
|
|
|
|
/* audio ports */
|
|
lr.min = lr.max = _systemic_input_latency;
|
|
for (int i = 1; i <= a_ins; ++i) {
|
|
char tmp[64];
|
|
snprintf(tmp, sizeof(tmp), "system:capture_%d", i);
|
|
PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
|
|
if (!p) return -1;
|
|
set_latency_range (p, false, lr);
|
|
_system_inputs.push_back (static_cast<DummyAudioPort*>(p));
|
|
static_cast<DummyAudioPort*>(p)->setup_generator (gt, _samplerate);
|
|
}
|
|
|
|
lr.min = lr.max = _systemic_output_latency;
|
|
for (int i = 1; i <= a_out; ++i) {
|
|
char tmp[64];
|
|
snprintf(tmp, sizeof(tmp), "system:playback_%d", i);
|
|
PortHandle p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
|
|
if (!p) return -1;
|
|
set_latency_range (p, true, lr);
|
|
_system_outputs.push_back (static_cast<DummyAudioPort*>(p));
|
|
}
|
|
|
|
/* midi ports */
|
|
lr.min = lr.max = _systemic_input_latency;
|
|
for (int i = 0; i < m_ins; ++i) {
|
|
char tmp[64];
|
|
snprintf(tmp, sizeof(tmp), "system:midi_capture_%d", i+1);
|
|
PortHandle p = add_port(std::string(tmp), DataType::MIDI, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
|
|
if (!p) return -1;
|
|
set_latency_range (p, false, lr);
|
|
_system_midi_in.push_back (static_cast<DummyMidiPort*>(p));
|
|
if (_midi_mode == MidiGenerator) {
|
|
static_cast<DummyMidiPort*>(p)->setup_generator (i % NUM_MIDI_EVENT_GENERATORS, _samplerate);
|
|
}
|
|
}
|
|
|
|
lr.min = lr.max = _systemic_output_latency;
|
|
for (int i = 1; i <= m_out; ++i) {
|
|
char tmp[64];
|
|
snprintf(tmp, sizeof(tmp), "system:midi_playback_%d", i);
|
|
PortHandle p = add_port(std::string(tmp), DataType::MIDI, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
|
|
if (!p) return -1;
|
|
set_latency_range (p, true, lr);
|
|
_system_midi_out.push_back (static_cast<DummyMidiPort*>(p));
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
DummyAudioBackend::unregister_ports (bool system_only)
|
|
{
|
|
_system_inputs.clear();
|
|
_system_outputs.clear();
|
|
_system_midi_in.clear();
|
|
_system_midi_out.clear();
|
|
|
|
for (std::vector<DummyPort*>::iterator i = _ports.begin (); i != _ports.end ();) {
|
|
DummyPort* port = *i;
|
|
if (! system_only || (port->is_physical () && port->is_terminal ())) {
|
|
port->disconnect_all ();
|
|
delete port;
|
|
i = _ports.erase (i);
|
|
} else {
|
|
++i;
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
DummyAudioBackend::connect (const std::string& src, const std::string& dst)
|
|
{
|
|
DummyPort* src_port = find_port (src);
|
|
DummyPort* dst_port = find_port (dst);
|
|
|
|
if (!src_port) {
|
|
PBD::error << _("DummyBackend::connect: Invalid Source port:")
|
|
<< " (" << src <<")" << endmsg;
|
|
return -1;
|
|
}
|
|
if (!dst_port) {
|
|
PBD::error << _("DummyBackend::connect: Invalid Destination port:")
|
|
<< " (" << dst <<")" << endmsg;
|
|
return -1;
|
|
}
|
|
return src_port->connect (dst_port);
|
|
}
|
|
|
|
int
|
|
DummyAudioBackend::disconnect (const std::string& src, const std::string& dst)
|
|
{
|
|
DummyPort* src_port = find_port (src);
|
|
DummyPort* dst_port = find_port (dst);
|
|
|
|
if (!src_port || !dst_port) {
|
|
PBD::error << _("DummyBackend::disconnect: Invalid Port(s)") << endmsg;
|
|
return -1;
|
|
}
|
|
return src_port->disconnect (dst_port);
|
|
}
|
|
|
|
int
|
|
DummyAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
|
|
{
|
|
DummyPort* dst_port = find_port (dst);
|
|
if (!valid_port (src)) {
|
|
PBD::error << _("DummyBackend::connect: Invalid Source Port Handle") << endmsg;
|
|
return -1;
|
|
}
|
|
if (!dst_port) {
|
|
PBD::error << _("DummyBackend::connect: Invalid Destination Port")
|
|
<< " (" << dst << ")" << endmsg;
|
|
return -1;
|
|
}
|
|
return static_cast<DummyPort*>(src)->connect (dst_port);
|
|
}
|
|
|
|
int
|
|
DummyAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
|
|
{
|
|
DummyPort* dst_port = find_port (dst);
|
|
if (!valid_port (src) || !dst_port) {
|
|
PBD::error << _("DummyBackend::disconnect: Invalid Port(s)") << endmsg;
|
|
return -1;
|
|
}
|
|
return static_cast<DummyPort*>(src)->disconnect (dst_port);
|
|
}
|
|
|
|
int
|
|
DummyAudioBackend::disconnect_all (PortEngine::PortHandle port)
|
|
{
|
|
if (!valid_port (port)) {
|
|
PBD::error << _("DummyBackend::disconnect_all: Invalid Port") << endmsg;
|
|
return -1;
|
|
}
|
|
static_cast<DummyPort*>(port)->disconnect_all ();
|
|
return 0;
|
|
}
|
|
|
|
bool
|
|
DummyAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
|
|
{
|
|
if (!valid_port (port)) {
|
|
PBD::error << _("DummyBackend::disconnect_all: Invalid Port") << endmsg;
|
|
return false;
|
|
}
|
|
return static_cast<DummyPort*>(port)->is_connected ();
|
|
}
|
|
|
|
bool
|
|
DummyAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
|
|
{
|
|
DummyPort* dst_port = find_port (dst);
|
|
if (!valid_port (src) || !dst_port) {
|
|
PBD::error << _("DummyBackend::connected_to: Invalid Port") << endmsg;
|
|
return false;
|
|
}
|
|
return static_cast<DummyPort*>(src)->is_connected (dst_port);
|
|
}
|
|
|
|
bool
|
|
DummyAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
|
|
{
|
|
if (!valid_port (port)) {
|
|
PBD::error << _("DummyBackend::physically_connected: Invalid Port") << endmsg;
|
|
return false;
|
|
}
|
|
return static_cast<DummyPort*>(port)->is_physically_connected ();
|
|
}
|
|
|
|
int
|
|
DummyAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
|
|
{
|
|
if (!valid_port (port)) {
|
|
PBD::error << _("DummyBackend::get_connections: Invalid Port") << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
assert (0 == names.size ());
|
|
|
|
const std::vector<DummyPort*>& connected_ports = static_cast<DummyPort*>(port)->get_connections ();
|
|
|
|
for (std::vector<DummyPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
|
|
names.push_back ((*i)->name ());
|
|
}
|
|
|
|
return (int)names.size ();
|
|
}
|
|
|
|
/* MIDI */
|
|
int
|
|
DummyAudioBackend::midi_event_get (
|
|
pframes_t& timestamp,
|
|
size_t& size, uint8_t** buf, void* port_buffer,
|
|
uint32_t event_index)
|
|
{
|
|
assert (buf && port_buffer);
|
|
DummyMidiBuffer& source = * static_cast<DummyMidiBuffer*>(port_buffer);
|
|
if (event_index >= source.size ()) {
|
|
return -1;
|
|
}
|
|
DummyMidiEvent * const event = source[event_index].get ();
|
|
|
|
timestamp = event->timestamp ();
|
|
size = event->size ();
|
|
*buf = event->data ();
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
DummyAudioBackend::midi_event_put (
|
|
void* port_buffer,
|
|
pframes_t timestamp,
|
|
const uint8_t* buffer, size_t size)
|
|
{
|
|
assert (buffer && port_buffer);
|
|
DummyMidiBuffer& dst = * static_cast<DummyMidiBuffer*>(port_buffer);
|
|
if (dst.size () && (pframes_t)dst.back ()->timestamp () > timestamp) {
|
|
// nevermind, ::get_buffer() sorts events, but always print warning
|
|
fprintf (stderr, "DummyMidiBuffer: it's too late for this event.\n");
|
|
}
|
|
dst.push_back (boost::shared_ptr<DummyMidiEvent>(new DummyMidiEvent (timestamp, buffer, size)));
|
|
return 0;
|
|
}
|
|
|
|
uint32_t
|
|
DummyAudioBackend::get_midi_event_count (void* port_buffer)
|
|
{
|
|
assert (port_buffer);
|
|
return static_cast<DummyMidiBuffer*>(port_buffer)->size ();
|
|
}
|
|
|
|
void
|
|
DummyAudioBackend::midi_clear (void* port_buffer)
|
|
{
|
|
assert (port_buffer);
|
|
DummyMidiBuffer * buf = static_cast<DummyMidiBuffer*>(port_buffer);
|
|
assert (buf);
|
|
buf->clear ();
|
|
}
|
|
|
|
/* Monitoring */
|
|
|
|
bool
|
|
DummyAudioBackend::can_monitor_input () const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
int
|
|
DummyAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
DummyAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
bool
|
|
DummyAudioBackend::monitoring_input (PortEngine::PortHandle)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/* Latency management */
|
|
|
|
void
|
|
DummyAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
|
|
{
|
|
if (!valid_port (port)) {
|
|
PBD::error << _("DummyPort::set_latency_range (): invalid port.") << endmsg;
|
|
}
|
|
static_cast<DummyPort*>(port)->set_latency_range (latency_range, for_playback);
|
|
}
|
|
|
|
LatencyRange
|
|
DummyAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
|
|
{
|
|
LatencyRange r;
|
|
if (!valid_port (port)) {
|
|
PBD::error << _("DummyPort::get_latency_range (): invalid port.") << endmsg;
|
|
r.min = 0;
|
|
r.max = 0;
|
|
return r;
|
|
}
|
|
DummyPort *p = static_cast<DummyPort*>(port);
|
|
assert(p);
|
|
|
|
r = p->latency_range (for_playback);
|
|
if (p->is_physical() && p->is_terminal()) {
|
|
if (p->is_input() && for_playback) {
|
|
const size_t l_in = _samples_per_period * .25;
|
|
r.min += l_in;
|
|
r.max += l_in;
|
|
}
|
|
if (p->is_output() && !for_playback) {
|
|
/* with 'Loopback' there is exactly once cycle latency, divide it between In + Out; */
|
|
const size_t l_in = _samples_per_period * .25;
|
|
const size_t l_out = _samples_per_period - l_in;
|
|
r.min += l_out;
|
|
r.max += l_out;
|
|
}
|
|
}
|
|
return r;
|
|
}
|
|
|
|
/* Discovering physical ports */
|
|
|
|
bool
|
|
DummyAudioBackend::port_is_physical (PortEngine::PortHandle port) const
|
|
{
|
|
if (!valid_port (port)) {
|
|
PBD::error << _("DummyPort::port_is_physical (): invalid port.") << endmsg;
|
|
return false;
|
|
}
|
|
return static_cast<DummyPort*>(port)->is_physical ();
|
|
}
|
|
|
|
void
|
|
DummyAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
|
|
{
|
|
for (size_t i = 0; i < _ports.size (); ++i) {
|
|
DummyPort* port = _ports[i];
|
|
if ((port->type () == type) && port->is_input () && port->is_physical ()) {
|
|
port_names.push_back (port->name ());
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
DummyAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
|
|
{
|
|
for (size_t i = 0; i < _ports.size (); ++i) {
|
|
DummyPort* port = _ports[i];
|
|
if ((port->type () == type) && port->is_output () && port->is_physical ()) {
|
|
port_names.push_back (port->name ());
|
|
}
|
|
}
|
|
}
|
|
|
|
ChanCount
|
|
DummyAudioBackend::n_physical_outputs () const
|
|
{
|
|
int n_midi = 0;
|
|
int n_audio = 0;
|
|
for (size_t i = 0; i < _ports.size (); ++i) {
|
|
DummyPort* port = _ports[i];
|
|
if (port->is_output () && port->is_physical ()) {
|
|
switch (port->type ()) {
|
|
case DataType::AUDIO: ++n_audio; break;
|
|
case DataType::MIDI: ++n_midi; break;
|
|
default: break;
|
|
}
|
|
}
|
|
}
|
|
ChanCount cc;
|
|
cc.set (DataType::AUDIO, n_audio);
|
|
cc.set (DataType::MIDI, n_midi);
|
|
return cc;
|
|
}
|
|
|
|
ChanCount
|
|
DummyAudioBackend::n_physical_inputs () const
|
|
{
|
|
int n_midi = 0;
|
|
int n_audio = 0;
|
|
for (size_t i = 0; i < _ports.size (); ++i) {
|
|
DummyPort* port = _ports[i];
|
|
if (port->is_input () && port->is_physical ()) {
|
|
switch (port->type ()) {
|
|
case DataType::AUDIO: ++n_audio; break;
|
|
case DataType::MIDI: ++n_midi; break;
|
|
default: break;
|
|
}
|
|
}
|
|
}
|
|
ChanCount cc;
|
|
cc.set (DataType::AUDIO, n_audio);
|
|
cc.set (DataType::MIDI, n_midi);
|
|
return cc;
|
|
}
|
|
|
|
/* Getting access to the data buffer for a port */
|
|
|
|
void*
|
|
DummyAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
|
|
{
|
|
assert (port);
|
|
assert (valid_port (port));
|
|
return static_cast<DummyPort*>(port)->get_buffer (nframes);
|
|
}
|
|
|
|
/* Engine Process */
|
|
void *
|
|
DummyAudioBackend::main_process_thread ()
|
|
{
|
|
AudioEngine::thread_init_callback (this);
|
|
_running = true;
|
|
_processed_samples = 0;
|
|
|
|
manager.registration_callback();
|
|
manager.graph_order_callback();
|
|
|
|
int64_t clock1, clock2;
|
|
clock1 = -1;
|
|
while (_running) {
|
|
|
|
if (_freewheeling != _freewheel) {
|
|
_freewheel = _freewheeling;
|
|
engine.freewheel_callback (_freewheel);
|
|
}
|
|
|
|
// re-set input buffers, generate on demand.
|
|
for (std::vector<DummyAudioPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
|
|
(*it)->next_period();
|
|
}
|
|
for (std::vector<DummyMidiPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it) {
|
|
(*it)->next_period();
|
|
}
|
|
|
|
if (engine.process_callback (_samples_per_period)) {
|
|
return 0;
|
|
}
|
|
_processed_samples += _samples_per_period;
|
|
|
|
if (_device == _("Loopback") && _midi_mode != MidiToAudio) {
|
|
int opn = 0;
|
|
int opc = _system_outputs.size();
|
|
for (std::vector<DummyAudioPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++opn) {
|
|
DummyAudioPort* op = _system_outputs[(opn % opc)];
|
|
(*it)->fill_wavetable ((const float*)op->get_buffer (_samples_per_period), _samples_per_period);
|
|
}
|
|
}
|
|
|
|
if (_midi_mode == MidiLoopback) {
|
|
int opn = 0;
|
|
int opc = _system_midi_out.size();
|
|
for (std::vector<DummyMidiPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++opn) {
|
|
DummyMidiPort* op = _system_midi_out[(opn % opc)];
|
|
op->get_buffer(0); // mix-down
|
|
(*it)->set_loopback (op->const_buffer());
|
|
}
|
|
}
|
|
else if (_midi_mode == MidiToAudio) {
|
|
int opn = 0;
|
|
int opc = _system_midi_out.size();
|
|
for (std::vector<DummyAudioPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++opn) {
|
|
DummyMidiPort* op = _system_midi_out[(opn % opc)];
|
|
op->get_buffer(0); // mix-down
|
|
(*it)->midi_to_wavetable (op->const_buffer(), _samples_per_period);
|
|
}
|
|
}
|
|
|
|
if (!_freewheel) {
|
|
const int64_t nominal_time = 1e6 * _samples_per_period / _samplerate;
|
|
clock2 = _x_get_monotonic_usec();
|
|
bool timers_ok = true;
|
|
|
|
/* querying the performance counter can fail occasionally (-1).
|
|
* Also on some multi-core systems, timers are CPU specific and not
|
|
* synchronized. We assume they differ more than a few milliseconds
|
|
* (4 * nominal cycle time) and simply ignore cases where the
|
|
* execution switches cores.
|
|
*/
|
|
if (clock1 < 0 || clock2 < 0 || (clock1 > clock2) || (clock2 - clock1) > 4 * nominal_time) {
|
|
clock1 = 0;
|
|
clock2 = nominal_time;
|
|
timers_ok = false;
|
|
}
|
|
|
|
const int64_t elapsed_time = clock2 - clock1;
|
|
|
|
if (timers_ok)
|
|
{ // low pass filter
|
|
const float load = elapsed_time / (float) nominal_time;
|
|
if (load > _dsp_load) {
|
|
_dsp_load = load;
|
|
} else {
|
|
const float a = .2 * _samples_per_period / _samplerate;
|
|
_dsp_load = _dsp_load + a * (load - _dsp_load) + 1e-12;
|
|
}
|
|
}
|
|
|
|
if (elapsed_time < nominal_time) {
|
|
Glib::usleep (nominal_time - elapsed_time);
|
|
} else {
|
|
Glib::usleep (100); // don't hog cpu
|
|
}
|
|
} else {
|
|
_dsp_load = 1.0f;
|
|
Glib::usleep (100); // don't hog cpu
|
|
}
|
|
|
|
/* beginning of next cycle */
|
|
clock1 = _x_get_monotonic_usec();
|
|
|
|
bool connections_changed = false;
|
|
bool ports_changed = false;
|
|
if (!pthread_mutex_trylock (&_port_callback_mutex)) {
|
|
if (_port_change_flag) {
|
|
ports_changed = true;
|
|
_port_change_flag = false;
|
|
}
|
|
if (!_port_connection_queue.empty ()) {
|
|
connections_changed = true;
|
|
}
|
|
while (!_port_connection_queue.empty ()) {
|
|
PortConnectData *c = _port_connection_queue.back ();
|
|
manager.connect_callback (c->a, c->b, c->c);
|
|
_port_connection_queue.pop_back ();
|
|
delete c;
|
|
}
|
|
pthread_mutex_unlock (&_port_callback_mutex);
|
|
}
|
|
if (ports_changed) {
|
|
manager.registration_callback();
|
|
}
|
|
if (connections_changed) {
|
|
manager.graph_order_callback();
|
|
}
|
|
if (connections_changed || ports_changed) {
|
|
engine.latency_callback(false);
|
|
engine.latency_callback(true);
|
|
}
|
|
|
|
}
|
|
_running = false;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
static boost::shared_ptr<DummyAudioBackend> _instance;
|
|
|
|
static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& e);
|
|
static int instantiate (const std::string& arg1, const std::string& /* arg2 */);
|
|
static int deinstantiate ();
|
|
static bool already_configured ();
|
|
static bool available ();
|
|
|
|
static ARDOUR::AudioBackendInfo _descriptor = {
|
|
_("None (Dummy)"),
|
|
instantiate,
|
|
deinstantiate,
|
|
backend_factory,
|
|
already_configured,
|
|
available
|
|
};
|
|
|
|
static boost::shared_ptr<AudioBackend>
|
|
backend_factory (AudioEngine& e)
|
|
{
|
|
if (!_instance) {
|
|
_instance.reset (new DummyAudioBackend (e, _descriptor));
|
|
}
|
|
return _instance;
|
|
}
|
|
|
|
static int
|
|
instantiate (const std::string& arg1, const std::string& /* arg2 */)
|
|
{
|
|
s_instance_name = arg1;
|
|
#ifdef PLATFORM_WINDOWS
|
|
LARGE_INTEGER Frequency;
|
|
if (!QueryPerformanceFrequency(&Frequency) || Frequency.QuadPart < 1) {
|
|
_win_pc_rate = 0;
|
|
} else {
|
|
_win_pc_rate = 1000000.0 / Frequency.QuadPart;
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
deinstantiate ()
|
|
{
|
|
_instance.reset ();
|
|
return 0;
|
|
}
|
|
|
|
static bool
|
|
already_configured ()
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static bool
|
|
available ()
|
|
{
|
|
return true;
|
|
}
|
|
|
|
extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor ()
|
|
{
|
|
return &_descriptor;
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
DummyPort::DummyPort (DummyAudioBackend &b, const std::string& name, PortFlags flags)
|
|
: _dummy_backend (b)
|
|
, _name (name)
|
|
, _flags (flags)
|
|
, _rseed (0)
|
|
, _gen_cycle (false)
|
|
{
|
|
_capture_latency_range.min = 0;
|
|
_capture_latency_range.max = 0;
|
|
_playback_latency_range.min = 0;
|
|
_playback_latency_range.max = 0;
|
|
_dummy_backend.port_connect_add_remove_callback();
|
|
}
|
|
|
|
DummyPort::~DummyPort () {
|
|
disconnect_all ();
|
|
_dummy_backend.port_connect_add_remove_callback();
|
|
}
|
|
|
|
|
|
int DummyPort::connect (DummyPort *port)
|
|
{
|
|
if (!port) {
|
|
PBD::error << _("DummyPort::connect (): invalid (null) port") << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
if (type () != port->type ()) {
|
|
PBD::error << _("DummyPort::connect (): wrong port-type") << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
if (is_output () && port->is_output ()) {
|
|
PBD::error << _("DummyPort::connect (): cannot inter-connect output ports.") << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
if (is_input () && port->is_input ()) {
|
|
PBD::error << _("DummyPort::connect (): cannot inter-connect input ports.") << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
if (this == port) {
|
|
PBD::error << _("DummyPort::connect (): cannot self-connect ports.") << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
if (is_connected (port)) {
|
|
#if 0 // don't bother to warn about this for now. just ignore it
|
|
PBD::error << _("DummyPort::connect (): ports are already connected:")
|
|
<< " (" << name () << ") -> (" << port->name () << ")"
|
|
<< endmsg;
|
|
#endif
|
|
return -1;
|
|
}
|
|
|
|
_connect (port, true);
|
|
return 0;
|
|
}
|
|
|
|
|
|
void DummyPort::_connect (DummyPort *port, bool callback)
|
|
{
|
|
_connections.push_back (port);
|
|
if (callback) {
|
|
port->_connect (this, false);
|
|
_dummy_backend.port_connect_callback (name(), port->name(), true);
|
|
}
|
|
}
|
|
|
|
int DummyPort::disconnect (DummyPort *port)
|
|
{
|
|
if (!port) {
|
|
PBD::error << _("DummyPort::disconnect (): invalid (null) port") << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
if (!is_connected (port)) {
|
|
PBD::error << _("DummyPort::disconnect (): ports are not connected:")
|
|
<< " (" << name () << ") -> (" << port->name () << ")"
|
|
<< endmsg;
|
|
return -1;
|
|
}
|
|
_disconnect (port, true);
|
|
return 0;
|
|
}
|
|
|
|
void DummyPort::_disconnect (DummyPort *port, bool callback)
|
|
{
|
|
std::vector<DummyPort*>::iterator it = std::find (_connections.begin (), _connections.end (), port);
|
|
|
|
assert (it != _connections.end ());
|
|
|
|
_connections.erase (it);
|
|
|
|
if (callback) {
|
|
port->_disconnect (this, false);
|
|
_dummy_backend.port_connect_callback (name(), port->name(), false);
|
|
}
|
|
}
|
|
|
|
|
|
void DummyPort::disconnect_all ()
|
|
{
|
|
while (!_connections.empty ()) {
|
|
_connections.back ()->_disconnect (this, false);
|
|
_dummy_backend.port_connect_callback (name(), _connections.back ()->name(), false);
|
|
_connections.pop_back ();
|
|
}
|
|
}
|
|
|
|
bool
|
|
DummyPort::is_connected (const DummyPort *port) const
|
|
{
|
|
return std::find (_connections.begin (), _connections.end (), port) != _connections.end ();
|
|
}
|
|
|
|
bool DummyPort::is_physically_connected () const
|
|
{
|
|
for (std::vector<DummyPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
|
|
if ((*it)->is_physical ()) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void DummyPort::setup_random_number_generator ()
|
|
{
|
|
#ifdef PLATFORM_WINDOWS
|
|
LARGE_INTEGER Count;
|
|
if (QueryPerformanceCounter (&Count)) {
|
|
_rseed = Count.QuadPart % UINT_MAX;
|
|
} else
|
|
#endif
|
|
{
|
|
_rseed = g_get_monotonic_time() % UINT_MAX;
|
|
}
|
|
_rseed = (_rseed + (uint64_t)this) % UINT_MAX;
|
|
}
|
|
|
|
inline uint32_t
|
|
DummyPort::randi ()
|
|
{
|
|
// 31bit Park-Miller-Carta Pseudo-Random Number Generator
|
|
// http://www.firstpr.com.au/dsp/rand31/
|
|
uint32_t hi, lo;
|
|
lo = 16807 * (_rseed & 0xffff);
|
|
hi = 16807 * (_rseed >> 16);
|
|
|
|
lo += (hi & 0x7fff) << 16;
|
|
lo += hi >> 15;
|
|
#if 1
|
|
lo = (lo & 0x7fffffff) + (lo >> 31);
|
|
#else
|
|
if (lo > 0x7fffffff) { lo -= 0x7fffffff; }
|
|
#endif
|
|
return (_rseed = lo);
|
|
}
|
|
|
|
inline float
|
|
DummyPort::randf ()
|
|
{
|
|
return (randi() / 1073741824.f) - 1.f;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
DummyAudioPort::DummyAudioPort (DummyAudioBackend &b, const std::string& name, PortFlags flags)
|
|
: DummyPort (b, name, flags)
|
|
, _gen_type (Silence)
|
|
, _b0 (0)
|
|
, _b1 (0)
|
|
, _b2 (0)
|
|
, _b3 (0)
|
|
, _b4 (0)
|
|
, _b5 (0)
|
|
, _b6 (0)
|
|
, _wavetable (0)
|
|
, _gen_period (0)
|
|
, _gen_offset (0)
|
|
, _gen_perio2 (0)
|
|
, _gen_count2 (0)
|
|
, _pass (false)
|
|
, _rn1 (0)
|
|
{
|
|
memset (_buffer, 0, sizeof (_buffer));
|
|
}
|
|
|
|
DummyAudioPort::~DummyAudioPort () {
|
|
free(_wavetable);
|
|
_wavetable = 0;
|
|
}
|
|
|
|
void DummyAudioPort::setup_generator (GeneratorType const g, float const samplerate)
|
|
{
|
|
DummyPort::setup_random_number_generator();
|
|
_gen_type = g;
|
|
|
|
switch (_gen_type) {
|
|
case PinkNoise:
|
|
case PonyNoise:
|
|
case UniformWhiteNoise:
|
|
case GaussianWhiteNoise:
|
|
case Silence:
|
|
break;
|
|
case KronekerDelta:
|
|
_gen_period = (5 + randi() % (int)(samplerate / 20.f));
|
|
break;
|
|
case SquareWave:
|
|
_gen_period = (5 + randi() % (int)(samplerate / 20.f)) & ~1;
|
|
break;
|
|
case SineWave:
|
|
_gen_period = 5 + randi() % (int)(samplerate / 20.f);
|
|
_wavetable = (Sample*) malloc (_gen_period * sizeof(Sample));
|
|
for (uint32_t i = 0 ; i < _gen_period; ++i) {
|
|
_wavetable[i] = .12589f * sinf(2.0f * M_PI * (float)i / (float)_gen_period); // -18dBFS
|
|
}
|
|
break;
|
|
case SquareSweep:
|
|
case SquareSweepSwell:
|
|
case SineSweep:
|
|
case SineSweepSwell:
|
|
{
|
|
_gen_period = 5 * samplerate + randi() % (int)(samplerate * 10.f);
|
|
_gen_period &= ~1;
|
|
_gen_perio2 = 1 | (int)ceilf (_gen_period * .89f); // Volume Swell period
|
|
const double f_min = 20.;
|
|
const double f_max = samplerate * .5;
|
|
const double g_p2 = _gen_period * .5;
|
|
#ifdef LINEAR_SWEEP
|
|
const double b = (f_max - f_min) / (2. * samplerate * g_p2);
|
|
const double a = f_min / samplerate;
|
|
#else
|
|
const double b = log (f_max / f_min) / g_p2;
|
|
const double a = f_min / (b * samplerate);
|
|
#endif
|
|
const uint32_t g_p2i = rint(g_p2);
|
|
_wavetable = (Sample*) malloc (_gen_period * sizeof(Sample));
|
|
for (uint32_t i = 0 ; i < g_p2i; ++i) {
|
|
#ifdef LINEAR_SWEEP
|
|
const double phase = i * (a + b * i);
|
|
#else
|
|
const double phase = a * exp (b * i) - a;
|
|
#endif
|
|
_wavetable[i] = (float)sin (2. * M_PI * (phase - floor (phase)));
|
|
}
|
|
for (uint32_t i = g_p2i; i < _gen_period; ++i) {
|
|
const uint32_t j = _gen_period - i;
|
|
#ifdef LINEAR_SWEEP
|
|
const double phase = j * (a + b * j);
|
|
#else
|
|
const double phase = a * exp (b * j) - a;
|
|
#endif
|
|
_wavetable[i] = -(float)sin (2. * M_PI * (phase - floor (phase)));
|
|
}
|
|
if (_gen_type == SquareSweep) {
|
|
for (uint32_t i = 0 ; i < _gen_period; ++i) {
|
|
_wavetable[i] = _wavetable[i] < 0 ? -.40709f : .40709f;
|
|
}
|
|
}
|
|
else if (_gen_type == SquareSweepSwell) {
|
|
for (uint32_t i = 0 ; i < _gen_period; ++i) {
|
|
_wavetable[i] = _wavetable[i] < 0 ? -1 : 1;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case Loopback:
|
|
_wavetable = (Sample*) malloc (DummyAudioBackend::max_buffer_size() * sizeof(Sample));
|
|
break;
|
|
}
|
|
}
|
|
|
|
void DummyAudioPort::midi_to_wavetable (DummyMidiBuffer const * const src, size_t n_samples)
|
|
{
|
|
memset(_wavetable, 0, n_samples * sizeof(float));
|
|
/* generate an audio spike for every midi message
|
|
* to verify layency-compensation alignment
|
|
* (here: midi-out playback-latency + audio-in capture-latency)
|
|
*/
|
|
for (DummyMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
|
|
const pframes_t t = (*it)->timestamp();
|
|
assert(t < n_samples);
|
|
// somewhat arbitrary mapping for quick visual feedback
|
|
float v = -.5f;
|
|
if ((*it)->size() == 3) {
|
|
const unsigned char *d = (*it)->const_data();
|
|
if ((d[0] & 0xf0) == 0x90) { // note on
|
|
v = .25f + d[2] / 512.f;
|
|
}
|
|
else if ((d[0] & 0xf0) == 0x80) { // note off
|
|
v = .3f - d[2] / 640.f;
|
|
}
|
|
else if ((d[0] & 0xf0) == 0xb0) { // CC
|
|
v = -.1f - d[2] / 256.f;
|
|
}
|
|
}
|
|
_wavetable[t] += v;
|
|
}
|
|
}
|
|
|
|
float DummyAudioPort::grandf ()
|
|
{
|
|
// Gaussian White Noise
|
|
// http://www.musicdsp.org/archive.php?classid=0#109
|
|
float x1, x2, r;
|
|
|
|
if (_pass) {
|
|
_pass = false;
|
|
return _rn1;
|
|
}
|
|
|
|
do {
|
|
x1 = randf ();
|
|
x2 = randf ();
|
|
r = x1 * x1 + x2 * x2;
|
|
} while ((r >= 1.0f) || (r < 1e-22f));
|
|
|
|
r = sqrtf (-2.f * logf (r) / r);
|
|
|
|
_pass = true;
|
|
_rn1 = r * x2;
|
|
return r * x1;
|
|
}
|
|
|
|
void DummyAudioPort::generate (const pframes_t n_samples)
|
|
{
|
|
Glib::Threads::Mutex::Lock lm (generator_lock);
|
|
if (_gen_cycle) {
|
|
return;
|
|
}
|
|
|
|
switch (_gen_type) {
|
|
case Silence:
|
|
memset (_buffer, 0, n_samples * sizeof (Sample));
|
|
break;
|
|
case SquareWave:
|
|
assert(_gen_period > 0);
|
|
for (pframes_t i = 0 ; i < n_samples; ++i) {
|
|
if (_gen_offset < _gen_period * .5f) {
|
|
_buffer[i] = .40709f; // -6dBFS
|
|
} else {
|
|
_buffer[i] = -.40709f;
|
|
}
|
|
_gen_offset = (_gen_offset + 1) % _gen_period;
|
|
}
|
|
break;
|
|
case KronekerDelta:
|
|
assert(_gen_period > 0);
|
|
memset (_buffer, 0, n_samples * sizeof (Sample));
|
|
for (pframes_t i = 0; i < n_samples; ++i) {
|
|
if (_gen_offset == 0) {
|
|
_buffer[i] = 1.0f;
|
|
}
|
|
_gen_offset = (_gen_offset + 1) % _gen_period;
|
|
}
|
|
break;
|
|
case SineSweepSwell:
|
|
case SquareSweepSwell:
|
|
assert(_wavetable && _gen_period > 0);
|
|
{
|
|
const float vols = 2.f / (float)_gen_perio2;
|
|
for (pframes_t i = 0; i < n_samples; ++i) {
|
|
const float g = fabsf (_gen_count2 * vols - 1.f);
|
|
_buffer[i] = g * _wavetable[_gen_offset];
|
|
_gen_offset = (_gen_offset + 1) % _gen_period;
|
|
_gen_count2 = (_gen_count2 + 1) % _gen_perio2;
|
|
}
|
|
}
|
|
break;
|
|
case Loopback:
|
|
_gen_period = n_samples; // XXX DummyBackend::_samples_per_period;
|
|
case SineWave:
|
|
case SineSweep:
|
|
case SquareSweep:
|
|
assert(_wavetable && _gen_period > 0);
|
|
{
|
|
pframes_t written = 0;
|
|
while (written < n_samples) {
|
|
const uint32_t remain = n_samples - written;
|
|
const uint32_t to_copy = std::min(remain, _gen_period - _gen_offset);
|
|
memcpy((void*)&_buffer[written],
|
|
(void*)&_wavetable[_gen_offset],
|
|
to_copy * sizeof(Sample));
|
|
written += to_copy;
|
|
_gen_offset = (_gen_offset + to_copy) % _gen_period;
|
|
}
|
|
}
|
|
break;
|
|
case UniformWhiteNoise:
|
|
for (pframes_t i = 0 ; i < n_samples; ++i) {
|
|
_buffer[i] = .158489f * randf();
|
|
}
|
|
break;
|
|
case GaussianWhiteNoise:
|
|
for (pframes_t i = 0 ; i < n_samples; ++i) {
|
|
_buffer[i] = .089125f * grandf();
|
|
}
|
|
break;
|
|
case PinkNoise:
|
|
for (pframes_t i = 0 ; i < n_samples; ++i) {
|
|
// Paul Kellet's refined method
|
|
// http://www.musicdsp.org/files/pink.txt
|
|
// NB. If 'white' consists of uniform random numbers,
|
|
// the pink noise will have an almost gaussian distribution.
|
|
const float white = .0498f * randf ();
|
|
_b0 = .99886f * _b0 + white * .0555179f;
|
|
_b1 = .99332f * _b1 + white * .0750759f;
|
|
_b2 = .96900f * _b2 + white * .1538520f;
|
|
_b3 = .86650f * _b3 + white * .3104856f;
|
|
_b4 = .55000f * _b4 + white * .5329522f;
|
|
_b5 = -.7616f * _b5 - white * .0168980f;
|
|
_buffer[i] = _b0 + _b1 + _b2 + _b3 + _b4 + _b5 + _b6 + white * 0.5362f;
|
|
_b6 = white * 0.115926f;
|
|
}
|
|
break;
|
|
case PonyNoise:
|
|
for (pframes_t i = 0 ; i < n_samples; ++i) {
|
|
const float white = 0.0498f * randf ();
|
|
// Paul Kellet's economy method
|
|
// http://www.musicdsp.org/files/pink.txt
|
|
_b0 = 0.99765f * _b0 + white * 0.0990460f;
|
|
_b1 = 0.96300f * _b1 + white * 0.2965164f;
|
|
_b2 = 0.57000f * _b2 + white * 1.0526913f;
|
|
_buffer[i] = _b0 + _b1 + _b2 + white * 0.1848f;
|
|
}
|
|
break;
|
|
}
|
|
_gen_cycle = true;
|
|
}
|
|
|
|
void* DummyAudioPort::get_buffer (pframes_t n_samples)
|
|
{
|
|
if (is_input ()) {
|
|
std::vector<DummyPort*>::const_iterator it = get_connections ().begin ();
|
|
if (it == get_connections ().end ()) {
|
|
memset (_buffer, 0, n_samples * sizeof (Sample));
|
|
} else {
|
|
DummyAudioPort * source = static_cast<DummyAudioPort*>(*it);
|
|
assert (source && source->is_output ());
|
|
if (source->is_physical() && source->is_terminal()) {
|
|
source->get_buffer(n_samples); // generate signal.
|
|
}
|
|
memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
|
|
while (++it != get_connections ().end ()) {
|
|
source = static_cast<DummyAudioPort*>(*it);
|
|
assert (source && source->is_output ());
|
|
Sample* dst = buffer ();
|
|
if (source->is_physical() && source->is_terminal()) {
|
|
source->get_buffer(n_samples); // generate signal.
|
|
}
|
|
const Sample* src = source->const_buffer ();
|
|
for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
|
|
*dst += *src;
|
|
}
|
|
}
|
|
}
|
|
} else if (is_output () && is_physical () && is_terminal()) {
|
|
if (!_gen_cycle) {
|
|
generate(n_samples);
|
|
}
|
|
}
|
|
return _buffer;
|
|
}
|
|
|
|
|
|
DummyMidiPort::DummyMidiPort (DummyAudioBackend &b, const std::string& name, PortFlags flags)
|
|
: DummyPort (b, name, flags)
|
|
, _midi_seq_spb (0)
|
|
, _midi_seq_time (0)
|
|
, _midi_seq_pos (0)
|
|
{
|
|
_buffer.clear ();
|
|
_loopback.clear ();
|
|
}
|
|
|
|
DummyMidiPort::~DummyMidiPort () {
|
|
_buffer.clear ();
|
|
_loopback.clear ();
|
|
}
|
|
|
|
struct MidiEventSorter {
|
|
bool operator() (const boost::shared_ptr<DummyMidiEvent>& a, const boost::shared_ptr<DummyMidiEvent>& b) {
|
|
return *a < *b;
|
|
}
|
|
};
|
|
|
|
void DummyMidiPort::set_loopback (DummyMidiBuffer const * const src)
|
|
{
|
|
_loopback.clear ();
|
|
for (DummyMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
|
|
_loopback.push_back (boost::shared_ptr<DummyMidiEvent>(new DummyMidiEvent (**it)));
|
|
}
|
|
}
|
|
|
|
void DummyMidiPort::setup_generator (int seq_id, const float sr)
|
|
{
|
|
DummyPort::setup_random_number_generator();
|
|
_midi_seq_dat = DummyMidiData::sequences[seq_id % NUM_MIDI_EVENT_GENERATORS];
|
|
_midi_seq_spb = sr * .5f; // 120 BPM, beat_time 1.0 per beat.
|
|
_midi_seq_pos = 0;
|
|
_midi_seq_time = 0;
|
|
}
|
|
|
|
void DummyMidiPort::midi_generate (const pframes_t n_samples)
|
|
{
|
|
Glib::Threads::Mutex::Lock lm (generator_lock);
|
|
if (_gen_cycle) {
|
|
return;
|
|
}
|
|
|
|
_buffer.clear ();
|
|
_gen_cycle = true;
|
|
|
|
if (_midi_seq_spb == 0 || !_midi_seq_dat) {
|
|
for (DummyMidiBuffer::const_iterator it = _loopback.begin (); it != _loopback.end (); ++it) {
|
|
_buffer.push_back (boost::shared_ptr<DummyMidiEvent>(new DummyMidiEvent (**it)));
|
|
}
|
|
return;
|
|
}
|
|
|
|
while (1) {
|
|
const int32_t ev_beat_time = _midi_seq_dat[_midi_seq_pos].beat_time * _midi_seq_spb - _midi_seq_time;
|
|
if (ev_beat_time < 0) {
|
|
break;
|
|
}
|
|
if ((pframes_t) ev_beat_time >= n_samples) {
|
|
break;
|
|
}
|
|
_buffer.push_back (boost::shared_ptr<DummyMidiEvent>(new DummyMidiEvent (
|
|
ev_beat_time,
|
|
_midi_seq_dat[_midi_seq_pos].event,
|
|
_midi_seq_dat[_midi_seq_pos].size
|
|
)));
|
|
++_midi_seq_pos;
|
|
|
|
if (_midi_seq_dat[_midi_seq_pos].event[0] == 0xff && _midi_seq_dat[_midi_seq_pos].event[1] == 0xff) {
|
|
_midi_seq_time -= _midi_seq_dat[_midi_seq_pos].beat_time * _midi_seq_spb;
|
|
_midi_seq_pos = 0;
|
|
}
|
|
}
|
|
_midi_seq_time += n_samples;
|
|
}
|
|
|
|
|
|
void* DummyMidiPort::get_buffer (pframes_t n_samples)
|
|
{
|
|
if (is_input ()) {
|
|
_buffer.clear ();
|
|
for (std::vector<DummyPort*>::const_iterator i = get_connections ().begin ();
|
|
i != get_connections ().end ();
|
|
++i) {
|
|
DummyMidiPort * source = static_cast<DummyMidiPort*>(*i);
|
|
if (source->is_physical() && source->is_terminal()) {
|
|
source->get_buffer(n_samples); // generate signal.
|
|
}
|
|
const DummyMidiBuffer *src = source->const_buffer ();
|
|
for (DummyMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
|
|
_buffer.push_back (boost::shared_ptr<DummyMidiEvent>(new DummyMidiEvent (**it)));
|
|
}
|
|
}
|
|
std::sort (_buffer.begin (), _buffer.end (), MidiEventSorter());
|
|
} else if (is_output () && is_physical () && is_terminal()) {
|
|
if (!_gen_cycle) {
|
|
midi_generate(n_samples);
|
|
}
|
|
}
|
|
return &_buffer;
|
|
}
|
|
|
|
DummyMidiEvent::DummyMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
|
|
: _size (size)
|
|
, _timestamp (timestamp)
|
|
, _data (0)
|
|
{
|
|
if (size > 0) {
|
|
_data = (uint8_t*) malloc (size);
|
|
memcpy (_data, data, size);
|
|
}
|
|
}
|
|
|
|
DummyMidiEvent::DummyMidiEvent (const DummyMidiEvent& other)
|
|
: _size (other.size ())
|
|
, _timestamp (other.timestamp ())
|
|
, _data (0)
|
|
{
|
|
if (other.size () && other.const_data ()) {
|
|
_data = (uint8_t*) malloc (other.size ());
|
|
memcpy (_data, other.const_data (), other.size ());
|
|
}
|
|
};
|
|
|
|
DummyMidiEvent::~DummyMidiEvent () {
|
|
free (_data);
|
|
};
|