1918 lines
47 KiB
C++
1918 lines
47 KiB
C++
/*
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* Copyright (C) 2015-2016 Tim Mayberry <mojofunk@gmail.com>
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* Copyright (C) 2015-2018 Robin Gareus <robin@gareus.org>
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* Copyright (C) 2016-2018 Paul Davis <paul@linuxaudiosystems.com>
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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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <regex.h>
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#ifndef PLATFORM_WINDOWS
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#include <sys/mman.h>
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#include <sys/time.h>
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#endif
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#ifdef COMPILER_MINGW
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#include <sys/time.h>
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#endif
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#include <glibmm.h>
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#include "portaudio_backend.h"
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#include "pbd/compose.h"
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#include "pbd/error.h"
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#include "pbd/file_utils.h"
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#include "pbd/pthread_utils.h"
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#include "pbd/microseconds.h"
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#include "pbd/windows_timer_utils.h"
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#include "pbd/windows_mmcss.h"
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#include "ardour/filesystem_paths.h"
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#include "ardour/port_manager.h"
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#include "pbd/i18n.h"
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#include "audio_utils.h"
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#include "debug.h"
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using namespace ARDOUR;
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namespace {
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const char * const winmme_driver_name = X_("WinMME");
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}
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static std::string s_instance_name;
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size_t PortAudioBackend::_max_buffer_size = 8192;
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std::vector<std::string> PortAudioBackend::_midi_options;
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std::vector<AudioBackend::DeviceStatus> PortAudioBackend::_input_audio_device_status;
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std::vector<AudioBackend::DeviceStatus> PortAudioBackend::_output_audio_device_status;
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PortAudioBackend::PortAudioBackend (AudioEngine& e, AudioBackendInfo& info)
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: AudioBackend (e, info)
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, PortEngineSharedImpl (e, s_instance_name)
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, _pcmio (0)
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, _run (false)
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, _active (false)
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, _use_blocking_api(false)
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, _freewheel (false)
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, _freewheeling (false)
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, _freewheel_ack (false)
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, _reinit_thread_callback (false)
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, _measure_latency (false)
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, _cycle_count(0)
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, _total_deviation_us(0)
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, _max_deviation_us(0)
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, _input_audio_device("")
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, _output_audio_device("")
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, _midi_driver_option(get_standard_device_name(DeviceNone))
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, _samplerate (48000)
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, _samples_per_period (1024)
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, _n_inputs (0)
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, _n_outputs (0)
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, _systemic_audio_input_latency (0)
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, _systemic_audio_output_latency (0)
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, _dsp_load (0)
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, _processed_samples (0)
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{
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_instance_name = s_instance_name;
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pthread_mutex_init (&_freewheel_mutex, 0);
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pthread_cond_init (&_freewheel_signal, 0);
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_port_connection_queue.reserve (128);
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_pcmio = new PortAudioIO ();
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_midiio = new WinMMEMidiIO ();
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}
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PortAudioBackend::~PortAudioBackend ()
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{
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delete _pcmio; _pcmio = 0;
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delete _midiio; _midiio = 0;
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clear_ports ();
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pthread_mutex_destroy (&_freewheel_mutex);
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pthread_cond_destroy (&_freewheel_signal);
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}
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/* AUDIOBACKEND API */
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std::string
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PortAudioBackend::name () const
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{
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return X_("PortAudio");
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}
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bool
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PortAudioBackend::is_realtime () const
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{
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return true;
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}
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bool
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PortAudioBackend::requires_driver_selection() const
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{
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// we could do this but implementation would need changing
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/*
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if (enumerate_drivers().size() == 1) {
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return false;
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}
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*/
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return true;
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}
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std::vector<std::string>
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PortAudioBackend::enumerate_drivers () const
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{
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DEBUG_AUDIO ("Portaudio: enumerate_drivers\n");
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std::vector<std::string> currently_available;
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_pcmio->host_api_list (currently_available);
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return currently_available;
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}
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int
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PortAudioBackend::set_driver (const std::string& name)
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{
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DEBUG_AUDIO (string_compose ("Portaudio: set_driver %1 \n", name));
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if (!_pcmio->set_host_api (name)) {
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DEBUG_AUDIO (string_compose ("Portaudio: Unable to set_driver %1 \n", name));
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return -1;
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}
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_pcmio->update_devices();
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return 0;
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}
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bool
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PortAudioBackend::update_devices ()
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{
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// update midi device info?
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return _pcmio->update_devices();
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}
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void
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PortAudioBackend::set_use_buffered_io (bool use_buffered_io)
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{
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DEBUG_AUDIO (string_compose ("Portaudio: use_buffered_io %1 \n", use_buffered_io));
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if (running()) {
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return;
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}
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_use_blocking_api = use_buffered_io;
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}
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std::string
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PortAudioBackend::driver_name () const
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{
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std::string driver_name = _pcmio->get_host_api ();
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DEBUG_AUDIO (string_compose ("Portaudio: driver_name %1 \n", driver_name));
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return driver_name;
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}
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bool
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PortAudioBackend::use_separate_input_and_output_devices () const
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{
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return true;
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}
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std::vector<AudioBackend::DeviceStatus>
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PortAudioBackend::enumerate_devices () const
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{
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DEBUG_AUDIO ("Portaudio: ERROR enumerate devices should not be called \n");
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return std::vector<AudioBackend::DeviceStatus>();
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}
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std::vector<AudioBackend::DeviceStatus>
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PortAudioBackend::enumerate_input_devices () const
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{
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_input_audio_device_status.clear();
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std::map<int, std::string> input_devices;
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_pcmio->input_device_list(input_devices);
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for (std::map<int, std::string>::const_iterator i = input_devices.begin (); i != input_devices.end(); ++i) {
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if (_input_audio_device == "") _input_audio_device = i->second;
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_input_audio_device_status.push_back (DeviceStatus (i->second, true));
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}
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return _input_audio_device_status;
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}
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std::vector<AudioBackend::DeviceStatus>
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PortAudioBackend::enumerate_output_devices () const
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{
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_output_audio_device_status.clear();
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std::map<int, std::string> output_devices;
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_pcmio->output_device_list(output_devices);
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for (std::map<int, std::string>::const_iterator i = output_devices.begin (); i != output_devices.end(); ++i) {
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if (_output_audio_device == "") _output_audio_device = i->second;
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_output_audio_device_status.push_back (DeviceStatus (i->second, true));
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}
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return _output_audio_device_status;
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}
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std::vector<float>
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PortAudioBackend::available_sample_rates (const std::string&) const
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{
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DEBUG_AUDIO ("Portaudio: available_sample_rates\n");
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std::vector<float> sr;
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_pcmio->available_sample_rates(name_to_id(_input_audio_device), sr);
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return sr;
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}
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std::vector<uint32_t>
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PortAudioBackend::available_buffer_sizes (const std::string&) const
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{
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DEBUG_AUDIO ("Portaudio: available_buffer_sizes\n");
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std::vector<uint32_t> bs;
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_pcmio->available_buffer_sizes(name_to_id(_input_audio_device), bs);
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return bs;
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}
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uint32_t
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PortAudioBackend::available_input_channel_count (const std::string&) const
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{
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return 128; // TODO query current device
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}
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uint32_t
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PortAudioBackend::available_output_channel_count (const std::string&) const
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{
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return 128; // TODO query current device
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}
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bool
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PortAudioBackend::can_change_sample_rate_when_running () const
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{
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return false;
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}
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bool
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PortAudioBackend::can_change_buffer_size_when_running () const
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{
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return false; // TODO
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}
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int
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PortAudioBackend::set_device_name (const std::string& d)
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{
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DEBUG_AUDIO ("Portaudio: set_device_name should not be called\n");
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return 0;
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}
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int
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PortAudioBackend::set_input_device_name (const std::string& d)
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{
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DEBUG_AUDIO (string_compose ("Portaudio: set_input_device_name %1\n", d));
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_input_audio_device = d;
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return 0;
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}
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int
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PortAudioBackend::set_output_device_name (const std::string& d)
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{
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DEBUG_AUDIO (string_compose ("Portaudio: set_output_device_name %1\n", d));
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_output_audio_device = d;
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return 0;
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}
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int
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PortAudioBackend::set_sample_rate (float sr)
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{
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if (sr <= 0) { return -1; }
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// TODO check if it's in the list of valid SR
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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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PortAudioBackend::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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engine.buffer_size_change (bs);
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return 0;
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}
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int
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PortAudioBackend::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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PortAudioBackend::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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PortAudioBackend::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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PortAudioBackend::set_systemic_input_latency (uint32_t sl)
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{
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_systemic_audio_input_latency = sl;
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return 0;
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}
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int
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PortAudioBackend::set_systemic_output_latency (uint32_t sl)
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{
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_systemic_audio_output_latency = sl;
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return 0;
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}
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int
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PortAudioBackend::set_systemic_midi_input_latency (std::string const device, uint32_t sl)
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{
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MidiDeviceInfo* nfo = midi_device_info (device);
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if (!nfo) return -1;
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nfo->systemic_input_latency = sl;
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return 0;
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}
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int
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PortAudioBackend::set_systemic_midi_output_latency (std::string const device, uint32_t sl)
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{
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MidiDeviceInfo* nfo = midi_device_info (device);
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if (!nfo) return -1;
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nfo->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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PortAudioBackend::device_name () const
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{
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return "Unused";
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}
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std::string
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PortAudioBackend::input_device_name () const
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{
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return _input_audio_device;
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}
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std::string
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PortAudioBackend::output_device_name () const
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{
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return _output_audio_device;
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}
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float
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PortAudioBackend::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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PortAudioBackend::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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PortAudioBackend::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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PortAudioBackend::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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PortAudioBackend::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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PortAudioBackend::systemic_input_latency () const
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{
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return _systemic_audio_input_latency;
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}
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uint32_t
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PortAudioBackend::systemic_output_latency () const
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{
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return _systemic_audio_output_latency;
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}
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uint32_t
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PortAudioBackend::systemic_midi_input_latency (std::string const device) const
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{
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MidiDeviceInfo* nfo = midi_device_info (device);
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if (!nfo) return 0;
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return nfo->systemic_input_latency;
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}
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uint32_t
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PortAudioBackend::systemic_midi_output_latency (std::string const device) const
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{
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MidiDeviceInfo* nfo = midi_device_info (device);
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if (!nfo) return 0;
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return nfo->systemic_output_latency;
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}
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std::string
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PortAudioBackend::control_app_name () const
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{
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return _pcmio->control_app_name (name_to_id (_input_audio_device));
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}
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void
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PortAudioBackend::launch_control_app ()
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{
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return _pcmio->launch_control_app (name_to_id(_input_audio_device));
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}
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/* MIDI */
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std::vector<std::string>
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PortAudioBackend::enumerate_midi_options () const
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{
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if (_midi_options.empty()) {
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_midi_options.push_back (winmme_driver_name);
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_midi_options.push_back (get_standard_device_name(DeviceNone));
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}
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return _midi_options;
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}
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int
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PortAudioBackend::set_midi_option (const std::string& opt)
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{
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if (opt != get_standard_device_name(DeviceNone) && opt != winmme_driver_name) {
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return -1;
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}
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DEBUG_MIDI (string_compose ("Setting midi option to %1\n", opt));
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_midi_driver_option = opt;
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return 0;
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}
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std::string
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PortAudioBackend::midi_option () const
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{
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return _midi_driver_option;
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}
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std::vector<AudioBackend::DeviceStatus>
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PortAudioBackend::enumerate_midi_devices () const
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{
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std::vector<AudioBackend::DeviceStatus> midi_device_status;
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std::vector<MidiDeviceInfo*> device_info;
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if (_midi_driver_option == winmme_driver_name) {
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_midiio->update_device_info ();
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device_info = _midiio->get_device_info ();
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}
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for (std::vector<MidiDeviceInfo*>::const_iterator i = device_info.begin();
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i != device_info.end();
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++i) {
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midi_device_status.push_back(DeviceStatus((*i)->device_name, true));
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}
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return midi_device_status;
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}
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MidiDeviceInfo*
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PortAudioBackend::midi_device_info (const std::string& device_name) const
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{
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std::vector<MidiDeviceInfo*> dev_info;
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if (_midi_driver_option == winmme_driver_name) {
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dev_info = _midiio->get_device_info();
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for (std::vector<MidiDeviceInfo*>::const_iterator i = dev_info.begin();
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i != dev_info.end();
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++i) {
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if ((*i)->device_name == device_name) {
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return *i;
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}
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}
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}
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return 0;
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}
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int
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PortAudioBackend::set_midi_device_enabled (std::string const device, bool enable)
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{
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MidiDeviceInfo* nfo = midi_device_info(device);
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if (!nfo) return -1;
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nfo->enable = enable;
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return 0;
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}
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bool
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PortAudioBackend::midi_device_enabled (std::string const device) const
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{
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MidiDeviceInfo* nfo = midi_device_info(device);
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if (!nfo) return false;
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return nfo->enable;
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}
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/* State Control */
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static void * blocking_thread_func (void *arg)
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{
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PortAudioBackend *d = static_cast<PortAudioBackend *>(arg);
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d->blocking_process_thread ();
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pthread_exit (0);
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return 0;
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}
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bool
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PortAudioBackend::engine_halted ()
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{
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return !_active && _run;
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}
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bool
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PortAudioBackend::running ()
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{
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return _active || _run;
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}
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int
|
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PortAudioBackend::_start (bool for_latency_measurement)
|
|
{
|
|
if (engine_halted()) {
|
|
stop();
|
|
}
|
|
|
|
if (running()) {
|
|
DEBUG_AUDIO("Already started.\n");
|
|
return BackendReinitializationError;
|
|
}
|
|
|
|
clear_ports ();
|
|
|
|
/* reset internal state */
|
|
assert (_run == false);
|
|
_run = false;
|
|
_dsp_load = 0;
|
|
_freewheeling = false;
|
|
_freewheel = false;
|
|
|
|
PaErrorCode err = paNoError;
|
|
|
|
if (_use_blocking_api) {
|
|
DEBUG_AUDIO("Opening blocking audio stream\n");
|
|
err = _pcmio->open_blocking_stream(name_to_id(_input_audio_device),
|
|
name_to_id(_output_audio_device),
|
|
_samplerate,
|
|
_samples_per_period);
|
|
} else {
|
|
DEBUG_AUDIO("Opening callback audio stream\n");
|
|
err = _pcmio->open_callback_stream(name_to_id(_input_audio_device),
|
|
name_to_id(_output_audio_device),
|
|
_samplerate,
|
|
_samples_per_period,
|
|
portaudio_callback,
|
|
this);
|
|
}
|
|
|
|
// reintepret Portaudio error messages
|
|
switch (err) {
|
|
case paNoError:
|
|
break;
|
|
case paBadIODeviceCombination:
|
|
return DeviceConfigurationNotSupportedError;
|
|
case paInvalidChannelCount:
|
|
return ChannelCountNotSupportedError;
|
|
case paInvalidSampleRate:
|
|
return SampleRateNotSupportedError;
|
|
default:
|
|
return AudioDeviceOpenError;
|
|
}
|
|
|
|
if (_n_outputs != _pcmio->n_playback_channels ()) {
|
|
_n_outputs = _pcmio->n_playback_channels ();
|
|
PBD::info << get_error_string(OutputChannelCountNotSupportedError) << endmsg;
|
|
}
|
|
|
|
if (_n_inputs != _pcmio->n_capture_channels ()) {
|
|
_n_inputs = _pcmio->n_capture_channels ();
|
|
PBD::info << get_error_string(InputChannelCountNotSupportedError) << endmsg;
|
|
}
|
|
#if 0
|
|
if (_pcmio->samples_per_period() != _samples_per_period) {
|
|
_samples_per_period = _pcmio->samples_per_period();
|
|
PBD::warning << _("PortAudioBackend: samples per period does not match.") << endmsg;
|
|
}
|
|
#endif
|
|
|
|
if (_pcmio->sample_rate() != _samplerate) {
|
|
_samplerate = _pcmio->sample_rate();
|
|
engine.sample_rate_change (_samplerate);
|
|
PBD::warning << get_error_string(SampleRateNotSupportedError) << endmsg;
|
|
}
|
|
|
|
_measure_latency = for_latency_measurement;
|
|
|
|
if (_midi_driver_option == winmme_driver_name) {
|
|
_midiio->set_enabled(true);
|
|
//_midiio->set_port_changed_callback(midi_port_change, this);
|
|
_midiio->start(); // triggers port discovery, callback coremidi_rediscover()
|
|
}
|
|
|
|
_cycle_timer.set_samplerate(_samplerate);
|
|
_cycle_timer.set_samples_per_cycle(_samples_per_period);
|
|
|
|
_dsp_calc.set_max_time_us (_cycle_timer.get_length_us());
|
|
|
|
DEBUG_MIDI ("Registering MIDI ports\n");
|
|
|
|
if (register_system_midi_ports () != 0) {
|
|
DEBUG_PORTS("Failed to register system midi ports.\n")
|
|
return PortRegistrationError;
|
|
}
|
|
|
|
DEBUG_AUDIO ("Registering Audio ports\n");
|
|
|
|
if (register_system_audio_ports()) {
|
|
DEBUG_PORTS("Failed to register system audio ports.\n");
|
|
return PortRegistrationError;
|
|
}
|
|
|
|
engine.sample_rate_change (_samplerate);
|
|
engine.buffer_size_change (_samples_per_period);
|
|
|
|
if (engine.reestablish_ports ()) {
|
|
DEBUG_PORTS("Could not re-establish ports.\n");
|
|
return PortReconnectError;
|
|
}
|
|
|
|
_run = true;
|
|
|
|
engine.reconnect_ports ();
|
|
g_atomic_int_set (&_port_change_flag, 0);
|
|
|
|
_dsp_calc.reset ();
|
|
|
|
if (_use_blocking_api) {
|
|
if (!start_blocking_process_thread()) {
|
|
return ProcessThreadStartError;
|
|
}
|
|
} else {
|
|
if (_pcmio->start_stream() != paNoError) {
|
|
DEBUG_AUDIO("Unable to start stream\n");
|
|
return AudioDeviceOpenError;
|
|
}
|
|
|
|
if (!start_freewheel_process_thread()) {
|
|
DEBUG_AUDIO("Unable to start freewheel thread\n");
|
|
stop();
|
|
return ProcessThreadStartError;
|
|
}
|
|
|
|
/* wait for backend to become active */
|
|
int timeout = 5000;
|
|
while (!_active && --timeout > 0) { Glib::usleep (1000); }
|
|
|
|
if (timeout == 0 || !_active) {
|
|
PBD::error << _("PortAudio:: failed to start device.") << endmsg;
|
|
stop ();
|
|
return ProcessThreadStartError;
|
|
}
|
|
}
|
|
|
|
return NoError;
|
|
}
|
|
|
|
int
|
|
PortAudioBackend::portaudio_callback(const void* input,
|
|
void* output,
|
|
unsigned long sample_count,
|
|
const PaStreamCallbackTimeInfo* time_info,
|
|
PaStreamCallbackFlags status_flags,
|
|
void* user_data)
|
|
{
|
|
PortAudioBackend* pa_backend = static_cast<PortAudioBackend*>(user_data);
|
|
|
|
if (!pa_backend->process_callback((const float*)input,
|
|
(float*)output,
|
|
sample_count,
|
|
time_info,
|
|
status_flags)) {
|
|
return paAbort;
|
|
}
|
|
|
|
return paContinue;
|
|
}
|
|
|
|
bool
|
|
PortAudioBackend::process_callback(const float* input,
|
|
float* output,
|
|
uint32_t sample_count,
|
|
const PaStreamCallbackTimeInfo* timeInfo,
|
|
PaStreamCallbackFlags statusFlags)
|
|
{
|
|
PBD::WaitTimerRAII tr (dsp_stats[DeviceWait]);
|
|
PBD::TimerRAII tr2 (dsp_stats[RunLoop]);
|
|
|
|
_active = true;
|
|
|
|
_dsp_calc.set_start_timestamp_us (PBD::get_microseconds());
|
|
|
|
if (_run && _freewheel && !_freewheel_ack) {
|
|
// acknowledge freewheeling; hand-over thread ID
|
|
pthread_mutex_lock (&_freewheel_mutex);
|
|
if (_freewheel) {
|
|
DEBUG_AUDIO("Setting _freewheel_ack = true;\n");
|
|
_freewheel_ack = true;
|
|
}
|
|
DEBUG_AUDIO("Signalling freewheel thread\n");
|
|
pthread_cond_signal (&_freewheel_signal);
|
|
pthread_mutex_unlock (&_freewheel_mutex);
|
|
}
|
|
|
|
if (statusFlags & paInputUnderflow ||
|
|
statusFlags & paInputOverflow ||
|
|
statusFlags & paOutputUnderflow ||
|
|
statusFlags & paOutputOverflow ) {
|
|
DEBUG_AUDIO("PortAudio: Xrun\n");
|
|
engine.Xrun();
|
|
return true;
|
|
}
|
|
|
|
if (!_run || _freewheel) {
|
|
memset(output, 0, sample_count * sizeof(float) * _system_outputs.size());
|
|
return true;
|
|
}
|
|
|
|
bool in_main_thread = pthread_equal(_main_thread, pthread_self());
|
|
|
|
if (_reinit_thread_callback || !in_main_thread) {
|
|
_reinit_thread_callback = false;
|
|
_main_thread = pthread_self();
|
|
AudioEngine::thread_init_callback (this);
|
|
}
|
|
|
|
process_port_connection_changes();
|
|
|
|
return blocking_process_main (input, output);
|
|
}
|
|
|
|
bool
|
|
PortAudioBackend::start_blocking_process_thread ()
|
|
{
|
|
if (pbd_realtime_pthread_create (PBD_SCHED_FIFO, PBD_RT_PRI_MAIN, PBD_RT_STACKSIZE_PROC,
|
|
&_main_blocking_thread, blocking_thread_func, this))
|
|
{
|
|
if (pbd_pthread_create (PBD_RT_STACKSIZE_PROC, &_main_blocking_thread, blocking_thread_func, this))
|
|
{
|
|
DEBUG_AUDIO("Failed to create main audio thread\n");
|
|
_run = false;
|
|
return false;
|
|
} else {
|
|
PBD::warning << get_error_string(AquireRealtimePermissionError) << endmsg;
|
|
}
|
|
}
|
|
|
|
int timeout = 5000;
|
|
while (!_active && --timeout > 0) { Glib::usleep (1000); }
|
|
|
|
if (timeout == 0 || !_active) {
|
|
DEBUG_AUDIO("Failed to start main audio thread\n");
|
|
_pcmio->close_stream();
|
|
_run = false;
|
|
unregister_ports();
|
|
_active = false;
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
PortAudioBackend::stop_blocking_process_thread ()
|
|
{
|
|
void *status;
|
|
|
|
if (pthread_join (_main_blocking_thread, &status)) {
|
|
DEBUG_AUDIO("Failed to stop main audio thread\n");
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
int
|
|
PortAudioBackend::stop ()
|
|
{
|
|
if (!_run) {
|
|
return 0;
|
|
}
|
|
|
|
_midiio->stop();
|
|
|
|
_run = false;
|
|
|
|
if (_use_blocking_api) {
|
|
if (!stop_blocking_process_thread()) {
|
|
return -1;
|
|
}
|
|
} else {
|
|
_pcmio->close_stream();
|
|
_active = false;
|
|
|
|
if (!stop_freewheel_process_thread()) {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
unregister_ports();
|
|
|
|
return (_active == false) ? 0 : -1;
|
|
}
|
|
|
|
static void* freewheel_thread(void* arg)
|
|
{
|
|
PortAudioBackend* d = static_cast<PortAudioBackend*>(arg);
|
|
d->freewheel_process_thread ();
|
|
pthread_exit (0);
|
|
return 0;
|
|
}
|
|
|
|
bool
|
|
PortAudioBackend::start_freewheel_process_thread ()
|
|
{
|
|
if (pthread_create(&_pthread_freewheel, NULL, freewheel_thread, this)) {
|
|
DEBUG_AUDIO("Failed to create main audio thread\n");
|
|
return false;
|
|
}
|
|
|
|
int timeout = 5000;
|
|
while (!_freewheel_thread_active && --timeout > 0) { Glib::usleep (1000); }
|
|
|
|
if (timeout == 0 || !_freewheel_thread_active) {
|
|
DEBUG_AUDIO("Failed to start freewheel thread\n");
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
PortAudioBackend::stop_freewheel_process_thread ()
|
|
{
|
|
void *status;
|
|
|
|
if (!_freewheel_thread_active) {
|
|
return true;
|
|
}
|
|
|
|
DEBUG_AUDIO("Signaling freewheel thread to stop\n");
|
|
|
|
pthread_mutex_lock (&_freewheel_mutex);
|
|
pthread_cond_signal (&_freewheel_signal);
|
|
pthread_mutex_unlock (&_freewheel_mutex);
|
|
|
|
if (pthread_join (_pthread_freewheel, &status) != 0) {
|
|
DEBUG_AUDIO("Failed to stop freewheel thread\n");
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void*
|
|
PortAudioBackend::freewheel_process_thread()
|
|
{
|
|
_freewheel_thread_active = true;
|
|
|
|
bool first_run = false;
|
|
|
|
pthread_mutex_lock (&_freewheel_mutex);
|
|
|
|
while(_run) {
|
|
// check if we should run,
|
|
if (_freewheeling != _freewheel) {
|
|
if (!_freewheeling) {
|
|
DEBUG_AUDIO("Leaving freewheel\n");
|
|
_freewheel = false; // first mark as disabled
|
|
_reinit_thread_callback = true; // hand over _main_thread
|
|
_freewheel_ack = false; // prepare next handshake
|
|
_midiio->set_enabled(true);
|
|
engine.freewheel_callback (_freewheeling);
|
|
_dsp_calc.reset ();
|
|
} else {
|
|
first_run = true;
|
|
_freewheel = true;
|
|
}
|
|
}
|
|
|
|
if (!_freewheel || !_freewheel_ack) {
|
|
// wait for a change, we use a timed wait to
|
|
// terminate early in case some error sets _run = 0
|
|
struct timeval tv;
|
|
struct timespec ts;
|
|
gettimeofday (&tv, NULL);
|
|
ts.tv_sec = tv.tv_sec + 3;
|
|
ts.tv_nsec = 0;
|
|
DEBUG_AUDIO("Waiting for freewheel change\n");
|
|
pthread_cond_timedwait (&_freewheel_signal, &_freewheel_mutex, &ts);
|
|
continue;
|
|
}
|
|
|
|
if (first_run) {
|
|
// tell the engine we're ready to GO.
|
|
engine.freewheel_callback (_freewheeling);
|
|
first_run = false;
|
|
_main_thread = pthread_self();
|
|
AudioEngine::thread_init_callback (this);
|
|
_midiio->set_enabled(false);
|
|
}
|
|
|
|
if (!blocking_process_freewheel()) {
|
|
break;
|
|
}
|
|
|
|
process_port_connection_changes();
|
|
}
|
|
|
|
pthread_mutex_unlock (&_freewheel_mutex);
|
|
|
|
_freewheel_thread_active = false;
|
|
|
|
if (_run) {
|
|
// engine.process_callback() returner error
|
|
engine.halted_callback("CoreAudio Freehweeling aborted.");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
PortAudioBackend::freewheel (bool onoff)
|
|
{
|
|
if (onoff == _freewheeling) {
|
|
return 0;
|
|
}
|
|
_freewheeling = onoff;
|
|
|
|
if (0 == pthread_mutex_trylock (&_freewheel_mutex)) {
|
|
pthread_cond_signal (&_freewheel_signal);
|
|
pthread_mutex_unlock (&_freewheel_mutex);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
float
|
|
PortAudioBackend::dsp_load () const
|
|
{
|
|
return 100.f * _dsp_load;
|
|
}
|
|
|
|
size_t
|
|
PortAudioBackend::raw_buffer_size (DataType t)
|
|
{
|
|
switch (t) {
|
|
case DataType::AUDIO:
|
|
return _samples_per_period * sizeof(Sample);
|
|
case DataType::MIDI:
|
|
return _max_buffer_size; // XXX not really limited
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Process time */
|
|
samplepos_t
|
|
PortAudioBackend::sample_time ()
|
|
{
|
|
return _processed_samples;
|
|
}
|
|
|
|
samplepos_t
|
|
PortAudioBackend::sample_time_at_cycle_start ()
|
|
{
|
|
return _processed_samples;
|
|
}
|
|
|
|
pframes_t
|
|
PortAudioBackend::samples_since_cycle_start ()
|
|
{
|
|
if (!_active || !_run || _freewheeling || _freewheel) {
|
|
return 0;
|
|
}
|
|
if (!_cycle_timer.valid()) {
|
|
return 0;
|
|
}
|
|
|
|
return _cycle_timer.samples_since_cycle_start (PBD::get_microseconds());
|
|
}
|
|
|
|
int
|
|
PortAudioBackend::name_to_id(std::string device_name) const {
|
|
uint32_t device_id = UINT32_MAX;
|
|
std::map<int, std::string> devices;
|
|
_pcmio->input_device_list(devices);
|
|
_pcmio->output_device_list(devices);
|
|
|
|
for (std::map<int, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
|
|
if (i->second == device_name) {
|
|
device_id = i->first;
|
|
break;
|
|
}
|
|
}
|
|
return device_id;
|
|
}
|
|
|
|
bool
|
|
PortAudioBackend::set_mmcss_pro_audio (HANDLE* task_handle)
|
|
{
|
|
bool mmcss_success = PBD::MMCSS::set_thread_characteristics ("Pro Audio", task_handle);
|
|
|
|
if (!mmcss_success) {
|
|
PBD::warning << get_error_string(SettingAudioThreadPriorityError) << endmsg;
|
|
return false;
|
|
} else {
|
|
DEBUG_THREADS("Thread characteristics set to Pro Audio\n");
|
|
}
|
|
|
|
bool mmcss_priority =
|
|
PBD::MMCSS::set_thread_priority(*task_handle, PBD::MMCSS::AVRT_PRIORITY_NORMAL);
|
|
|
|
if (!mmcss_priority) {
|
|
PBD::warning << get_error_string(SettingAudioThreadPriorityError) << endmsg;
|
|
return false;
|
|
} else {
|
|
DEBUG_THREADS("Thread priority set to AVRT_PRIORITY_NORMAL\n");
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
PortAudioBackend::reset_mmcss (HANDLE task_handle)
|
|
{
|
|
if (!PBD::MMCSS::revert_thread_characteristics(task_handle)) {
|
|
DEBUG_THREADS("Unable to reset process thread characteristics\n");
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void *
|
|
PortAudioBackend::portaudio_process_thread (void *arg)
|
|
{
|
|
ThreadData* td = reinterpret_cast<ThreadData*> (arg);
|
|
boost::function<void ()> f = td->f;
|
|
delete td;
|
|
|
|
#ifdef USE_MMCSS_THREAD_PRIORITIES
|
|
HANDLE task_handle;
|
|
bool mmcss_success = set_mmcss_pro_audio (&task_handle);
|
|
#endif
|
|
|
|
DWORD tid = GetCurrentThreadId ();
|
|
DEBUG_THREADS (string_compose ("Process Thread Child ID: %1\n", tid));
|
|
|
|
f ();
|
|
|
|
#ifdef USE_MMCSS_THREAD_PRIORITIES
|
|
if (mmcss_success) {
|
|
reset_mmcss (task_handle);
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
PortAudioBackend::create_process_thread (boost::function<void()> func)
|
|
{
|
|
pthread_t thread_id;
|
|
ThreadData* td = new ThreadData (this, func, PBD_RT_STACKSIZE_PROC);
|
|
|
|
if (pbd_realtime_pthread_create (PBD_SCHED_FIFO, PBD_RT_PRI_PROC, PBD_RT_STACKSIZE_PROC,
|
|
&thread_id, portaudio_process_thread, td)) {
|
|
if (pbd_pthread_create (PBD_RT_STACKSIZE_PROC, &thread_id, portaudio_process_thread, td)) {
|
|
DEBUG_AUDIO("Cannot create process thread.");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
_threads.push_back (thread_id);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
PortAudioBackend::join_process_threads ()
|
|
{
|
|
int rv = 0;
|
|
|
|
for (std::vector<pthread_t>::const_iterator i = _threads.begin (); i != _threads.end (); ++i)
|
|
{
|
|
void *status;
|
|
if (pthread_join (*i, &status)) {
|
|
DEBUG_AUDIO("Cannot terminate process thread.");
|
|
rv -= 1;
|
|
}
|
|
}
|
|
_threads.clear ();
|
|
return rv;
|
|
}
|
|
|
|
bool
|
|
PortAudioBackend::in_process_thread ()
|
|
{
|
|
if (_use_blocking_api) {
|
|
if (pthread_equal(_main_blocking_thread, pthread_self()) != 0) {
|
|
return true;
|
|
}
|
|
} else {
|
|
if (pthread_equal(_main_thread, pthread_self()) != 0) {
|
|
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
|
|
PortAudioBackend::process_thread_count ()
|
|
{
|
|
return _threads.size ();
|
|
}
|
|
|
|
void
|
|
PortAudioBackend::update_latencies ()
|
|
{
|
|
// trigger latency callback in RT thread (locked graph)
|
|
port_connect_add_remove_callback();
|
|
}
|
|
|
|
/* PORTENGINE API */
|
|
|
|
void*
|
|
PortAudioBackend::private_handle () const
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
const std::string&
|
|
PortAudioBackend::my_name () const
|
|
{
|
|
return _instance_name;
|
|
}
|
|
|
|
int
|
|
PortAudioBackend::register_system_audio_ports()
|
|
{
|
|
LatencyRange lr;
|
|
|
|
const uint32_t a_ins = _n_inputs;
|
|
const uint32_t a_out = _n_outputs;
|
|
|
|
uint32_t capture_latency = 0;
|
|
uint32_t playback_latency = 0;
|
|
|
|
// guard against erroneous latency values
|
|
if (_pcmio->capture_latency() > _samples_per_period) {
|
|
capture_latency = _pcmio->capture_latency() - _samples_per_period;
|
|
}
|
|
if (_pcmio->playback_latency() > _samples_per_period) {
|
|
playback_latency = _pcmio->playback_latency() - _samples_per_period;
|
|
}
|
|
|
|
/* audio ports */
|
|
lr.min = lr.max = capture_latency + (_measure_latency ? 0 : _systemic_audio_input_latency);
|
|
for (uint32_t i = 0; i < a_ins; ++i) {
|
|
char tmp[64];
|
|
snprintf(tmp, sizeof(tmp), "system:capture_%d", i+1);
|
|
PortPtr p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
|
|
if (!p) return -1;
|
|
set_latency_range (p, false, lr);
|
|
boost::shared_ptr<PortAudioPort> audio_port = boost::dynamic_pointer_cast<PortAudioPort>(p);
|
|
audio_port->set_hw_port_name (
|
|
_pcmio->get_input_channel_name (name_to_id (_input_audio_device), i));
|
|
_system_inputs.push_back (audio_port);
|
|
}
|
|
|
|
lr.min = lr.max = playback_latency + (_measure_latency ? 0 : _systemic_audio_output_latency);
|
|
for (uint32_t i = 0; i < a_out; ++i) {
|
|
char tmp[64];
|
|
snprintf(tmp, sizeof(tmp), "system:playback_%d", i+1);
|
|
PortPtr p = add_port(std::string(tmp), DataType::AUDIO, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
|
|
if (!p) return -1;
|
|
set_latency_range (p, true, lr);
|
|
boost::shared_ptr<PortAudioPort> audio_port = boost::dynamic_pointer_cast<PortAudioPort>(p);
|
|
audio_port->set_hw_port_name (
|
|
_pcmio->get_output_channel_name (name_to_id (_output_audio_device), i));
|
|
_system_outputs.push_back(audio_port);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
PortAudioBackend::register_system_midi_ports()
|
|
{
|
|
if (_midi_driver_option == get_standard_device_name(DeviceNone)) {
|
|
DEBUG_MIDI("No MIDI backend selected, not system midi ports available\n");
|
|
return 0;
|
|
}
|
|
|
|
LatencyRange lr;
|
|
lr.min = lr.max = _samples_per_period;
|
|
|
|
const std::vector<WinMMEMidiInputDevice*> inputs = _midiio->get_inputs();
|
|
|
|
for (std::vector<WinMMEMidiInputDevice*>::const_iterator i = inputs.begin ();
|
|
i != inputs.end ();
|
|
++i) {
|
|
std::string port_name = "system:midi_capture_" + (*i)->name();
|
|
PortPtr p = add_port (port_name, DataType::MIDI, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
|
|
|
|
if (!p) {
|
|
return -1;
|
|
}
|
|
|
|
MidiDeviceInfo* info = _midiio->get_device_info((*i)->name());
|
|
if (info) { // assert?
|
|
lr.min = lr.max = _samples_per_period + info->systemic_input_latency;
|
|
}
|
|
set_latency_range (p, false, lr);
|
|
|
|
boost::shared_ptr<PortMidiPort> midi_port = boost::dynamic_pointer_cast<PortMidiPort>(p);
|
|
midi_port->set_hw_port_name ((*i)->name());
|
|
_system_midi_in.push_back (midi_port);
|
|
DEBUG_MIDI (string_compose ("Registered MIDI input port: %1\n", port_name));
|
|
}
|
|
|
|
const std::vector<WinMMEMidiOutputDevice*> outputs = _midiio->get_outputs();
|
|
|
|
for (std::vector<WinMMEMidiOutputDevice*>::const_iterator i = outputs.begin ();
|
|
i != outputs.end ();
|
|
++i) {
|
|
std::string port_name = "system:midi_playback_" + (*i)->name();
|
|
PortPtr p = add_port (port_name, DataType::MIDI, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
|
|
|
|
if (!p) {
|
|
return -1;
|
|
}
|
|
|
|
MidiDeviceInfo* info = _midiio->get_device_info((*i)->name());
|
|
if (info) { // assert?
|
|
lr.min = lr.max = _samples_per_period + info->systemic_output_latency;
|
|
}
|
|
set_latency_range (p, false, lr);
|
|
|
|
boost::shared_ptr<PortMidiPort> midi_port = boost::dynamic_pointer_cast<PortMidiPort>(p);
|
|
midi_port->set_n_periods(2);
|
|
midi_port->set_hw_port_name ((*i)->name());
|
|
_system_midi_out.push_back (midi_port);
|
|
DEBUG_MIDI (string_compose ("Registered MIDI output port: %1\n", port_name));
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
BackendPort*
|
|
PortAudioBackend::port_factory (std::string const & name, ARDOUR::DataType type, ARDOUR::PortFlags flags)
|
|
{
|
|
BackendPort* port = 0;
|
|
|
|
switch (type) {
|
|
case DataType::AUDIO:
|
|
port = new PortAudioPort (*this, name, flags);
|
|
break;
|
|
case DataType::MIDI:
|
|
port = new PortMidiPort (*this, name, flags);
|
|
break;
|
|
default:
|
|
PBD::error << string_compose (_("%1::register_port: Invalid Data Type."), _instance_name) << endmsg;
|
|
return 0;
|
|
}
|
|
|
|
return port;
|
|
}
|
|
|
|
/* MIDI */
|
|
int
|
|
PortAudioBackend::midi_event_get (
|
|
pframes_t& timestamp,
|
|
size_t& size, uint8_t const** buf, void* port_buffer,
|
|
uint32_t event_index)
|
|
{
|
|
if (!buf || !port_buffer) return -1;
|
|
PortMidiBuffer& source = * static_cast<PortMidiBuffer*>(port_buffer);
|
|
if (event_index >= source.size ()) {
|
|
return -1;
|
|
}
|
|
PortMidiEvent const& event = source[event_index];
|
|
|
|
timestamp = event.timestamp ();
|
|
size = event.size ();
|
|
*buf = event.data ();
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
PortAudioBackend::midi_event_put (
|
|
void* port_buffer,
|
|
pframes_t timestamp,
|
|
const uint8_t* buffer, size_t size)
|
|
{
|
|
if (!buffer || !port_buffer) return -1;
|
|
PortMidiBuffer& dst = * static_cast<PortMidiBuffer*>(port_buffer);
|
|
#ifndef NDEBUG
|
|
if (dst.size () && (pframes_t)dst.back ().timestamp () > timestamp) {
|
|
// nevermind, ::get_buffer() sorts events
|
|
DEBUG_MIDI (string_compose ("PortMidiBuffer: unordered event: %1 > %2\n",
|
|
(pframes_t)dst.back ().timestamp (),
|
|
timestamp));
|
|
}
|
|
#endif
|
|
dst.push_back (PortMidiEvent (timestamp, buffer, size));
|
|
return 0;
|
|
}
|
|
|
|
uint32_t
|
|
PortAudioBackend::get_midi_event_count (void* port_buffer)
|
|
{
|
|
if (!port_buffer) return 0;
|
|
return static_cast<PortMidiBuffer*>(port_buffer)->size ();
|
|
}
|
|
|
|
void
|
|
PortAudioBackend::midi_clear (void* port_buffer)
|
|
{
|
|
if (!port_buffer) return;
|
|
PortMidiBuffer * buf = static_cast<PortMidiBuffer*>(port_buffer);
|
|
assert (buf);
|
|
buf->clear ();
|
|
}
|
|
|
|
/* Monitoring */
|
|
|
|
bool
|
|
PortAudioBackend::can_monitor_input () const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
int
|
|
PortAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
PortAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
bool
|
|
PortAudioBackend::monitoring_input (PortEngine::PortHandle)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/* Latency management */
|
|
|
|
void
|
|
PortAudioBackend::set_latency_range (PortEngine::PortHandle port_handle, bool for_playback, LatencyRange latency_range)
|
|
{
|
|
boost::shared_ptr<BackendPort> port = boost::dynamic_pointer_cast<BackendPort>(port_handle);
|
|
if (!valid_port (port)) {
|
|
DEBUG_PORTS("BackendPort::set_latency_range (): invalid port.\n");
|
|
return;
|
|
}
|
|
port->set_latency_range (latency_range, for_playback);
|
|
}
|
|
|
|
LatencyRange
|
|
PortAudioBackend::get_latency_range (PortEngine::PortHandle port_handle, bool for_playback)
|
|
{
|
|
boost::shared_ptr<BackendPort> port = boost::dynamic_pointer_cast<BackendPort>(port_handle);
|
|
LatencyRange r;
|
|
if (!valid_port (port)) {
|
|
DEBUG_PORTS("BackendPort::get_latency_range (): invalid port.\n");
|
|
r.min = 0;
|
|
r.max = 0;
|
|
return r;
|
|
}
|
|
|
|
r = port->latency_range (for_playback);
|
|
// TODO MIDI
|
|
if (port->is_physical() && port->is_terminal() && port->type() == DataType::AUDIO) {
|
|
if (port->is_input() && for_playback) {
|
|
r.min += _samples_per_period;
|
|
r.max += _samples_per_period;
|
|
}
|
|
if (port->is_output() && !for_playback) {
|
|
r.min += _samples_per_period;
|
|
r.max += _samples_per_period;
|
|
}
|
|
}
|
|
return r;
|
|
}
|
|
|
|
|
|
/* Getting access to the data buffer for a port */
|
|
|
|
void*
|
|
PortAudioBackend::get_buffer (PortEngine::PortHandle port_handle, pframes_t nframes)
|
|
{
|
|
boost::shared_ptr<BackendPort> port = boost::dynamic_pointer_cast<BackendPort>(port_handle);
|
|
assert (port);
|
|
return port->get_buffer (nframes);
|
|
}
|
|
|
|
|
|
void *
|
|
PortAudioBackend::blocking_process_thread ()
|
|
{
|
|
AudioEngine::thread_init_callback (this);
|
|
_active = true;
|
|
_processed_samples = 0;
|
|
|
|
manager.registration_callback();
|
|
manager.graph_order_callback();
|
|
|
|
if (_pcmio->start_stream() != paNoError) {
|
|
_pcmio->close_stream ();
|
|
_active = false;
|
|
engine.halted_callback(get_error_string(AudioDeviceIOError).c_str());
|
|
}
|
|
|
|
#ifdef USE_MMCSS_THREAD_PRIORITIES
|
|
HANDLE task_handle;
|
|
bool mmcss_success = set_mmcss_pro_audio (&task_handle);
|
|
#endif
|
|
|
|
DWORD tid = GetCurrentThreadId ();
|
|
DEBUG_THREADS (string_compose ("Process Thread Master ID: %1\n", tid));
|
|
|
|
_dsp_calc.reset ();
|
|
while (_run) {
|
|
|
|
if (_freewheeling != _freewheel) {
|
|
_freewheel = _freewheeling;
|
|
engine.freewheel_callback (_freewheel);
|
|
if (!_freewheel) {
|
|
_dsp_calc.reset ();
|
|
}
|
|
}
|
|
|
|
if (!_freewheel) {
|
|
|
|
dsp_stats[DeviceWait].start();
|
|
int r = _pcmio->next_cycle (_samples_per_period);
|
|
dsp_stats[DeviceWait].update();
|
|
switch (r) {
|
|
case 0: // OK
|
|
break;
|
|
case 1:
|
|
DEBUG_AUDIO("PortAudio: Xrun\n");
|
|
engine.Xrun();
|
|
break;
|
|
default:
|
|
PBD::error << get_error_string(AudioDeviceIOError) << endmsg;
|
|
break;
|
|
}
|
|
|
|
if (!blocking_process_main(_pcmio->get_capture_buffer(),
|
|
_pcmio->get_playback_buffer())) {
|
|
return 0;
|
|
}
|
|
} else {
|
|
|
|
if (!blocking_process_freewheel()) {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
process_port_connection_changes();
|
|
}
|
|
_pcmio->close_stream();
|
|
_active = false;
|
|
if (_run) {
|
|
engine.halted_callback(get_error_string(AudioDeviceIOError).c_str());
|
|
}
|
|
|
|
#ifdef USE_MMCSS_THREAD_PRIORITIES
|
|
if (mmcss_success) {
|
|
reset_mmcss(task_handle);
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool
|
|
PortAudioBackend::blocking_process_main(const float* interleaved_input_data,
|
|
float* interleaved_output_data)
|
|
{
|
|
PBD::TimerRAII tr (dsp_stats[RunLoop]);
|
|
uint32_t i = 0;
|
|
int64_t min_elapsed_us = 1000000;
|
|
int64_t max_elapsed_us = 0;
|
|
|
|
_dsp_calc.set_start_timestamp_us (PBD::get_microseconds());
|
|
|
|
i = 0;
|
|
/* Copy input audio data into input port buffers */
|
|
for (std::vector<BackendPortPtr>::const_iterator it = _system_inputs.begin();
|
|
it != _system_inputs.end();
|
|
++it, ++i) {
|
|
assert(_system_inputs.size() == _pcmio->n_capture_channels());
|
|
uint32_t channels = _system_inputs.size();
|
|
float* input_port_buffer = (float*)(*it)->get_buffer(_samples_per_period);
|
|
deinterleave_audio_data(
|
|
interleaved_input_data, input_port_buffer, _samples_per_period, i, channels);
|
|
}
|
|
|
|
process_incoming_midi ();
|
|
|
|
/* clear output buffers */
|
|
for (std::vector<BackendPortPtr>::const_iterator it = _system_outputs.begin();
|
|
it != _system_outputs.end();
|
|
++it) {
|
|
memset((*it)->get_buffer(_samples_per_period),
|
|
0,
|
|
_samples_per_period * sizeof(Sample));
|
|
}
|
|
|
|
_last_cycle_start = _cycle_timer.get_start();
|
|
_cycle_timer.reset_start(PBD::get_microseconds());
|
|
_cycle_count++;
|
|
|
|
uint64_t cycle_diff_us = (_cycle_timer.get_start() - _last_cycle_start);
|
|
int64_t deviation_us = (cycle_diff_us - _cycle_timer.get_length_us());
|
|
_total_deviation_us += ::llabs(deviation_us);
|
|
_max_deviation_us =
|
|
std::max(_max_deviation_us, (uint64_t)::llabs(deviation_us));
|
|
|
|
if ((_cycle_count % 1000) == 0) {
|
|
uint64_t mean_deviation_us = _total_deviation_us / _cycle_count;
|
|
DEBUG_TIMING(string_compose("Mean avg cycle deviation: %1(ms), max %2(ms)\n",
|
|
mean_deviation_us * 1e-3,
|
|
_max_deviation_us * 1e-3));
|
|
}
|
|
|
|
if (::llabs(deviation_us) > _cycle_timer.get_length_us()) {
|
|
DEBUG_TIMING(
|
|
string_compose("time between process(ms): %1, Est(ms): %2, Dev(ms): %3\n",
|
|
cycle_diff_us * 1e-3,
|
|
_cycle_timer.get_length_us() * 1e-3,
|
|
deviation_us * 1e-3));
|
|
}
|
|
|
|
/* call engine process callback */
|
|
if (engine.process_callback(_samples_per_period)) {
|
|
_pcmio->close_stream();
|
|
_active = false;
|
|
return false;
|
|
}
|
|
|
|
process_outgoing_midi ();
|
|
|
|
/* write back audio */
|
|
i = 0;
|
|
for (std::vector<BackendPortPtr>::const_iterator it = _system_outputs.begin();
|
|
it != _system_outputs.end();
|
|
++it, ++i) {
|
|
assert(_system_outputs.size() == _pcmio->n_playback_channels());
|
|
const uint32_t channels = _system_outputs.size();
|
|
float* output_port_buffer = (float*)(*it)->get_buffer(_samples_per_period);
|
|
interleave_audio_data(
|
|
output_port_buffer, interleaved_output_data, _samples_per_period, i, channels);
|
|
}
|
|
|
|
_processed_samples += _samples_per_period;
|
|
|
|
/* calculate DSP load */
|
|
_dsp_calc.set_stop_timestamp_us (PBD::get_microseconds());
|
|
_dsp_load = _dsp_calc.get_dsp_load();
|
|
|
|
DEBUG_TIMING(string_compose("DSP Load: %1\n", _dsp_load));
|
|
|
|
max_elapsed_us = std::max(_dsp_calc.elapsed_time_us(), max_elapsed_us);
|
|
min_elapsed_us = std::min(_dsp_calc.elapsed_time_us(), min_elapsed_us);
|
|
if ((_cycle_count % 1000) == 0) {
|
|
DEBUG_TIMING(string_compose("Elapsed process time(usecs) max: %1, min: %2\n",
|
|
max_elapsed_us,
|
|
min_elapsed_us));
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
PortAudioBackend::blocking_process_freewheel()
|
|
{
|
|
// zero audio input buffers
|
|
for (std::vector<BackendPortPtr>::const_iterator it = _system_inputs.begin();
|
|
it != _system_inputs.end();
|
|
++it) {
|
|
memset((*it)->get_buffer(_samples_per_period),
|
|
0,
|
|
_samples_per_period * sizeof(Sample));
|
|
}
|
|
|
|
// TODO clear midi or stop midi recv when entering fwheelin'
|
|
|
|
if (engine.process_callback(_samples_per_period)) {
|
|
_pcmio->close_stream();
|
|
_active = false;
|
|
return false;
|
|
}
|
|
|
|
// drop all outgoing MIDI messages
|
|
for (std::vector<BackendPortPtr>::const_iterator it = _system_midi_out.begin();
|
|
it != _system_midi_out.end();
|
|
++it) {
|
|
void* bptr = (*it)->get_buffer(0);
|
|
midi_clear(bptr);
|
|
}
|
|
|
|
_dsp_load = 1.0;
|
|
Glib::usleep(100); // don't hog cpu
|
|
return true;
|
|
}
|
|
|
|
void
|
|
PortAudioBackend::process_incoming_midi ()
|
|
{
|
|
uint32_t i = 0;
|
|
for (std::vector<BackendPortPtr>::const_iterator it = _system_midi_in.begin();
|
|
it != _system_midi_in.end();
|
|
++it, ++i) {
|
|
PortMidiBuffer* mbuf = static_cast<PortMidiBuffer*>((*it)->get_buffer(0));
|
|
mbuf->clear();
|
|
uint64_t timestamp;
|
|
pframes_t sample_offset;
|
|
uint8_t data[MaxWinMidiEventSize];
|
|
size_t size = sizeof(data);
|
|
while (_midiio->dequeue_input_event(i,
|
|
_cycle_timer.get_start(),
|
|
_cycle_timer.get_next_start(),
|
|
timestamp,
|
|
data,
|
|
size)) {
|
|
sample_offset = _cycle_timer.samples_since_cycle_start(timestamp);
|
|
midi_event_put(mbuf, sample_offset, data, size);
|
|
DEBUG_MIDI(string_compose("Dequeuing incoming MIDI data for device: %1 "
|
|
"sample_offset: %2 timestamp: %3, size: %4\n",
|
|
_midiio->get_inputs()[i]->name(),
|
|
sample_offset,
|
|
timestamp,
|
|
size));
|
|
size = sizeof(data);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
PortAudioBackend::process_outgoing_midi ()
|
|
{
|
|
/* mixdown midi */
|
|
for (std::vector<BackendPortPtr>::iterator it = _system_midi_out.begin();
|
|
it != _system_midi_out.end();
|
|
++it) {
|
|
boost::dynamic_pointer_cast<PortMidiPort>(*it)->next_period();
|
|
}
|
|
/* queue outgoing midi */
|
|
uint32_t i = 0;
|
|
for (std::vector<BackendPortPtr>::const_iterator it = _system_midi_out.begin();
|
|
it != _system_midi_out.end();
|
|
++it, ++i) {
|
|
const PortMidiBuffer* src =
|
|
boost::dynamic_pointer_cast<const PortMidiPort>(*it)->const_buffer();
|
|
|
|
for (PortMidiBuffer::const_iterator mit = src->begin(); mit != src->end();
|
|
++mit) {
|
|
uint64_t timestamp =
|
|
_cycle_timer.timestamp_from_sample_offset(mit->timestamp());
|
|
DEBUG_MIDI(string_compose("Queuing outgoing MIDI data for device: "
|
|
"%1 sample_offset: %2 timestamp: %3, size: %4\n",
|
|
_midiio->get_outputs()[i]->name(),
|
|
mit->timestamp(),
|
|
timestamp,
|
|
mit->size()));
|
|
_midiio->enqueue_output_event(i, timestamp, mit->data(), mit->size());
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
PortAudioBackend::process_port_connection_changes ()
|
|
{
|
|
bool connections_changed = false;
|
|
bool ports_changed = false;
|
|
if (!pthread_mutex_trylock (&_port_callback_mutex)) {
|
|
if (g_atomic_int_compare_and_exchange (&_port_change_flag, 1, 0)) {
|
|
ports_changed = true;
|
|
}
|
|
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) {
|
|
update_system_port_latencies ();
|
|
engine.latency_callback(false);
|
|
engine.latency_callback(true);
|
|
}
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
static boost::shared_ptr<PortAudioBackend> _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 = {
|
|
BACKEND_NAME,
|
|
instantiate,
|
|
deinstantiate,
|
|
backend_factory,
|
|
already_configured,
|
|
available
|
|
};
|
|
|
|
static boost::shared_ptr<AudioBackend>
|
|
backend_factory (AudioEngine& e)
|
|
{
|
|
if (!_instance) {
|
|
_instance.reset (new PortAudioBackend (e, _descriptor));
|
|
}
|
|
return _instance;
|
|
}
|
|
|
|
static int
|
|
instantiate (const std::string& arg1, const std::string& /* arg2 */)
|
|
{
|
|
s_instance_name = arg1;
|
|
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;
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
/******************************************************************************/
|
|
|
|
PortAudioPort::PortAudioPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
|
|
: BackendPort (b, name, flags)
|
|
{
|
|
memset (_buffer, 0, sizeof (_buffer));
|
|
#ifndef PLATFORM_WINDOWS
|
|
mlock(_buffer, sizeof (_buffer));
|
|
#endif
|
|
}
|
|
|
|
PortAudioPort::~PortAudioPort () { }
|
|
|
|
void* PortAudioPort::get_buffer (pframes_t n_samples)
|
|
{
|
|
if (is_input ()) {
|
|
std::set<BackendPortPtr>::const_iterator it = get_connections ().begin ();
|
|
if (it == get_connections ().end ()) {
|
|
memset (_buffer, 0, n_samples * sizeof (Sample));
|
|
} else {
|
|
boost::shared_ptr<const PortAudioPort> source = boost::dynamic_pointer_cast<const PortAudioPort>(*it);
|
|
assert (source && source->is_output ());
|
|
memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
|
|
while (++it != get_connections ().end ()) {
|
|
source = boost::dynamic_pointer_cast<const PortAudioPort>(*it);
|
|
assert (source && source->is_output ());
|
|
Sample* dst = buffer ();
|
|
const Sample* src = source->const_buffer ();
|
|
for (uint32_t s = 0; s < n_samples; ++s, ++dst, ++src) {
|
|
*dst += *src;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return _buffer;
|
|
}
|
|
|
|
|
|
PortMidiPort::PortMidiPort (PortAudioBackend &b, const std::string& name, PortFlags flags)
|
|
: BackendPort (b, name, flags)
|
|
, _n_periods (1)
|
|
, _bufperiod (0)
|
|
{
|
|
_buffer[0].clear ();
|
|
_buffer[1].clear ();
|
|
|
|
_buffer[0].reserve (256);
|
|
_buffer[1].reserve (256);
|
|
}
|
|
|
|
PortMidiPort::~PortMidiPort () { }
|
|
|
|
struct MidiEventSorter {
|
|
bool operator() (PortMidiEvent const& a, PortMidiEvent const& b) {
|
|
return a < b;
|
|
}
|
|
};
|
|
|
|
void* PortMidiPort::get_buffer (pframes_t /* nframes */)
|
|
{
|
|
if (is_input ()) {
|
|
(_buffer[_bufperiod]).clear ();
|
|
for (std::set<BackendPortPtr>::const_iterator i = get_connections ().begin ();
|
|
i != get_connections ().end ();
|
|
++i) {
|
|
const PortMidiBuffer * src = boost::dynamic_pointer_cast<const PortMidiPort>(*i)->const_buffer ();
|
|
for (PortMidiBuffer::const_iterator it = src->begin (); it != src->end (); ++it) {
|
|
(_buffer[_bufperiod]).push_back (*it);
|
|
}
|
|
}
|
|
std::stable_sort ((_buffer[_bufperiod]).begin (), (_buffer[_bufperiod]).end (), MidiEventSorter());
|
|
}
|
|
return &(_buffer[_bufperiod]);
|
|
}
|
|
|
|
PortMidiEvent::PortMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
|
|
: _size (size)
|
|
, _timestamp (timestamp)
|
|
{
|
|
if (size > 0 && size < MaxWinMidiEventSize) {
|
|
memcpy (_data, data, size);
|
|
}
|
|
}
|
|
|
|
PortMidiEvent::PortMidiEvent (const PortMidiEvent& other)
|
|
: _size (other.size ())
|
|
, _timestamp (other.timestamp ())
|
|
{
|
|
if (other._size > 0) {
|
|
assert (other._size < MaxWinMidiEventSize);
|
|
memcpy (_data, other._data, other._size);
|
|
}
|
|
};
|