2380 lines
61 KiB
C++
2380 lines
61 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 <regex.h>
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#include <sys/mman.h>
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#include <sys/time.h>
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#include <glibmm.h>
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#include "alsa_audiobackend.h"
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#include "rt_thread.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 "ardour/filesystem_paths.h"
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#include "ardour/port_manager.h"
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#include "ardouralsautil/devicelist.h"
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#include "pbd/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 AlsaAudioBackend::_max_buffer_size = 8192;
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std::vector<std::string> AlsaAudioBackend::_midi_options;
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std::vector<AudioBackend::DeviceStatus> AlsaAudioBackend::_input_audio_device_status;
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std::vector<AudioBackend::DeviceStatus> AlsaAudioBackend::_output_audio_device_status;
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std::vector<AudioBackend::DeviceStatus> AlsaAudioBackend::_duplex_audio_device_status;
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std::vector<AudioBackend::DeviceStatus> AlsaAudioBackend::_midi_device_status;
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ALSADeviceInfo AlsaAudioBackend::_input_audio_device_info;
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ALSADeviceInfo AlsaAudioBackend::_output_audio_device_info;
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AlsaAudioBackend::AlsaAudioBackend (AudioEngine& e, AudioBackendInfo& info)
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: AudioBackend (e, info)
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, _pcmi (0)
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, _run (false)
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, _active (false)
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, _freewheel (false)
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, _freewheeling (false)
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, _measure_latency (false)
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, _last_process_start (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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, _device_reservation(0)
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, _samplerate (48000)
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, _samples_per_period (1024)
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, _periods_per_cycle (2)
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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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, _midi_ins (0)
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, _midi_outs (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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pthread_mutex_init (&_port_callback_mutex, 0);
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_input_audio_device_info.valid = false;
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_output_audio_device_info.valid = false;
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_port_connection_queue.reserve (128);
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}
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AlsaAudioBackend::~AlsaAudioBackend ()
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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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AlsaAudioBackend::name () const
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{
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return X_("ALSA");
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}
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bool
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AlsaAudioBackend::is_realtime () 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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AlsaAudioBackend::enumerate_devices () const
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{
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_duplex_audio_device_status.clear();
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std::map<std::string, std::string> devices;
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get_alsa_audio_device_names(devices);
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for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
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if (_input_audio_device == "") _input_audio_device = i->first;
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if (_output_audio_device == "") _output_audio_device = i->first;
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_duplex_audio_device_status.push_back (DeviceStatus (i->first, true));
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}
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return _duplex_audio_device_status;
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}
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std::vector<AudioBackend::DeviceStatus>
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AlsaAudioBackend::enumerate_input_devices () const
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{
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_input_audio_device_status.clear();
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std::map<std::string, std::string> devices;
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get_alsa_audio_device_names(devices, HalfDuplexIn);
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_input_audio_device_status.push_back (DeviceStatus (get_standard_device_name(DeviceNone), true));
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for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
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if (_input_audio_device == "") _input_audio_device = i->first;
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_input_audio_device_status.push_back (DeviceStatus (i->first, 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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AlsaAudioBackend::enumerate_output_devices () const
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{
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_output_audio_device_status.clear();
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std::map<std::string, std::string> devices;
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get_alsa_audio_device_names(devices, HalfDuplexOut);
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_output_audio_device_status.push_back (DeviceStatus (get_standard_device_name(DeviceNone), true));
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for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
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if (_output_audio_device == "") _output_audio_device = i->first;
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_output_audio_device_status.push_back (DeviceStatus (i->first, true));
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}
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return _output_audio_device_status;
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}
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void
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AlsaAudioBackend::reservation_stdout (std::string d, size_t /* s */)
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{
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if (d.substr(0, 19) == "Acquired audio-card") {
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_reservation_succeeded = true;
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}
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}
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void
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AlsaAudioBackend::release_device()
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{
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_reservation_connection.drop_connections();
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ARDOUR::SystemExec * tmp = _device_reservation;
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_device_reservation = 0;
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delete tmp;
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}
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bool
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AlsaAudioBackend::acquire_device(const char* device_name)
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{
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/* This is quick hack, ideally we'll link against libdbus and implement a dbus-listener
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* that owns the device. here we try to get away by just requesting it and then block it...
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* (pulseaudio periodically checks anyway)
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*
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* dbus-send --session --print-reply --type=method_call --dest=org.freedesktop.ReserveDevice1.Audio2 /org/freedesktop/ReserveDevice1/Audio2 org.freedesktop.ReserveDevice1.RequestRelease int32:4
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* -> should not return 'boolean false'
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*/
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int device_number = card_to_num(device_name);
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if (device_number < 0) return false;
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assert(_device_reservation == 0);
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_reservation_succeeded = false;
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std::string request_device_exe;
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if (!PBD::find_file (
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PBD::Searchpath(Glib::build_filename(ARDOUR::ardour_dll_directory(), "ardouralsautil")
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+ G_SEARCHPATH_SEPARATOR_S + ARDOUR::ardour_dll_directory()),
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"ardour-request-device", request_device_exe))
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{
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PBD::warning << "ardour-request-device binary was not found..'" << endmsg;
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return false;
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}
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else
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{
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char **argp;
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char tmp[128];
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argp=(char**) calloc(5,sizeof(char*));
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argp[0] = strdup(request_device_exe.c_str());
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argp[1] = strdup("-P");
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snprintf(tmp, sizeof(tmp), "%d", getpid());
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argp[2] = strdup(tmp);
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snprintf(tmp, sizeof(tmp), "Audio%d", device_number);
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argp[3] = strdup(tmp);
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argp[4] = 0;
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_device_reservation = new ARDOUR::SystemExec(request_device_exe, argp);
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_device_reservation->ReadStdout.connect_same_thread (_reservation_connection, boost::bind (&AlsaAudioBackend::reservation_stdout, this, _1 ,_2));
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_device_reservation->Terminated.connect_same_thread (_reservation_connection, boost::bind (&AlsaAudioBackend::release_device, this));
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if (_device_reservation->start(0)) {
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PBD::warning << _("AlsaAudioBackend: Device Request failed.") << endmsg;
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release_device();
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return false;
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}
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}
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// wait to check if reservation suceeded.
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int timeout = 500; // 5 sec
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while (_device_reservation && !_reservation_succeeded && --timeout > 0) {
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Glib::usleep(10000);
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}
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if (timeout == 0 || !_reservation_succeeded) {
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PBD::warning << _("AlsaAudioBackend: Device Reservation failed.") << endmsg;
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release_device();
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return false;
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}
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return true;
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}
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std::vector<float>
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AlsaAudioBackend::available_sample_rates2 (const std::string& input_device, const std::string& output_device) const
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{
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std::vector<float> sr;
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if (input_device == get_standard_device_name(DeviceNone) && output_device == get_standard_device_name(DeviceNone)) {
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return sr;
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}
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else if (input_device == get_standard_device_name(DeviceNone)) {
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sr = available_sample_rates (output_device);
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}
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else if (output_device == get_standard_device_name(DeviceNone)) {
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sr = available_sample_rates (input_device);
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} else {
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std::vector<float> sr_in = available_sample_rates (input_device);
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std::vector<float> sr_out = available_sample_rates (output_device);
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std::set_intersection (sr_in.begin(), sr_in.end(), sr_out.begin(), sr_out.end(), std::back_inserter(sr));
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}
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return sr;
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}
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std::vector<float>
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AlsaAudioBackend::available_sample_rates (const std::string& device) const
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{
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ALSADeviceInfo *nfo = NULL;
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std::vector<float> sr;
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if (device == get_standard_device_name(DeviceNone)) {
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return sr;
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}
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if (device == _input_audio_device && _input_audio_device_info.valid) {
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nfo = &_input_audio_device_info;
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}
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else if (device == _output_audio_device && _output_audio_device_info.valid) {
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nfo = &_output_audio_device_info;
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}
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static const float avail_rates [] = { 8000, 22050.0, 24000.0, 44100.0, 48000.0, 88200.0, 96000.0, 176400.0, 192000.0 };
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for (size_t i = 0 ; i < sizeof(avail_rates) / sizeof(float); ++i) {
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if (!nfo || (avail_rates[i] >= nfo->min_rate && avail_rates[i] <= nfo->max_rate)) {
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sr.push_back (avail_rates[i]);
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}
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}
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return sr;
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}
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std::vector<uint32_t>
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AlsaAudioBackend::available_buffer_sizes2 (const std::string& input_device, const std::string& output_device) const
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{
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std::vector<uint32_t> bs;
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if (input_device == get_standard_device_name(DeviceNone) && output_device == get_standard_device_name(DeviceNone)) {
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return bs;
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}
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else if (input_device == get_standard_device_name(DeviceNone)) {
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bs = available_buffer_sizes (output_device);
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}
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else if (output_device == get_standard_device_name(DeviceNone)) {
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bs = available_buffer_sizes (input_device);
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} else {
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std::vector<uint32_t> bs_in = available_buffer_sizes (input_device);
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std::vector<uint32_t> bs_out = available_buffer_sizes (output_device);
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std::set_intersection (bs_in.begin(), bs_in.end(), bs_out.begin(), bs_out.end(), std::back_inserter(bs));
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}
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return bs;
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}
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std::vector<uint32_t>
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AlsaAudioBackend::available_buffer_sizes (const std::string& device) const
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{
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ALSADeviceInfo *nfo = NULL;
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std::vector<uint32_t> bs;
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if (device == get_standard_device_name(DeviceNone)) {
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return bs;
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}
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if (device == _input_audio_device && _input_audio_device_info.valid) {
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nfo = &_input_audio_device_info;
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}
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else if (device == _output_audio_device && _output_audio_device_info.valid) {
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nfo = &_output_audio_device_info;
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}
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static const unsigned long avail_sizes [] = { 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192 };
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for (size_t i = 0 ; i < sizeof(avail_sizes) / sizeof(unsigned long); ++i) {
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if (!nfo || (avail_sizes[i] >= nfo->min_size && avail_sizes[i] <= nfo->max_size)) {
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bs.push_back (avail_sizes[i]);
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}
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}
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return bs;
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}
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uint32_t
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AlsaAudioBackend::available_input_channel_count (const std::string& device) const
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{
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if (device == get_standard_device_name(DeviceNone)) {
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return 0;
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}
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if (device == _input_audio_device && _input_audio_device_info.valid) {
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return _input_audio_device_info.max_channels;
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}
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return 128;
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}
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uint32_t
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AlsaAudioBackend::available_output_channel_count (const std::string& device) const
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{
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if (device == get_standard_device_name(DeviceNone)) {
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return 0;
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}
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if (device == _output_audio_device && _output_audio_device_info.valid) {
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return _output_audio_device_info.max_channels;
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}
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return 128;
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}
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std::vector<uint32_t>
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AlsaAudioBackend::available_period_sizes (const std::string& driver) const
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{
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std::vector<uint32_t> ps;
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ps.push_back (2);
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ps.push_back (3);
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return ps;
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}
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bool
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AlsaAudioBackend::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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AlsaAudioBackend::can_change_buffer_size_when_running () const
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{
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return false; // why not? :)
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}
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int
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AlsaAudioBackend::set_input_device_name (const std::string& d)
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{
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if (_input_audio_device == d) {
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return 0;
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}
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_input_audio_device = d;
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if (d == get_standard_device_name(DeviceNone)) {
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_input_audio_device_info.valid = false;
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return 0;
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}
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std::string alsa_device;
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std::map<std::string, std::string> devices;
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get_alsa_audio_device_names(devices, HalfDuplexIn);
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for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
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if (i->first == d) {
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alsa_device = i->second;
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break;
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}
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}
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if (alsa_device == "") {
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_input_audio_device_info.valid = false;
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return 1;
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}
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/* device will be busy once used, hence cache the parameters */
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/* return */ get_alsa_device_parameters (alsa_device.c_str(), true, &_input_audio_device_info);
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return 0;
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}
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int
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AlsaAudioBackend::set_output_device_name (const std::string& d)
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{
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if (_output_audio_device == d) {
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return 0;
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}
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_output_audio_device = d;
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if (d == get_standard_device_name(DeviceNone)) {
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_output_audio_device_info.valid = false;
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return 0;
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}
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std::string alsa_device;
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std::map<std::string, std::string> devices;
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get_alsa_audio_device_names(devices, HalfDuplexOut);
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for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
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if (i->first == d) {
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alsa_device = i->second;
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break;
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}
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}
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if (alsa_device == "") {
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_output_audio_device_info.valid = false;
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return 1;
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}
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/* return */ get_alsa_device_parameters (alsa_device.c_str(), true, &_output_audio_device_info);
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return 0;
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}
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int
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AlsaAudioBackend::set_device_name (const std::string& d)
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{
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int rv = 0;
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rv |= set_input_device_name (d);
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rv |= set_output_device_name (d);
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return rv;
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}
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int
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AlsaAudioBackend::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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AlsaAudioBackend::set_peridod_size (uint32_t n)
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{
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if (n == 0 || n > 3) {
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return -1;
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}
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if (_run) {
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return -1;
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}
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_periods_per_cycle = n;
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return 0;
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}
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int
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AlsaAudioBackend::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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if (_run) {
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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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AlsaAudioBackend::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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AlsaAudioBackend::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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AlsaAudioBackend::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
|
|
AlsaAudioBackend::set_systemic_input_latency (uint32_t sl)
|
|
{
|
|
_systemic_audio_input_latency = sl;
|
|
if (_run) {
|
|
update_systemic_audio_latencies();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::set_systemic_output_latency (uint32_t sl)
|
|
{
|
|
_systemic_audio_output_latency = sl;
|
|
if (_run) {
|
|
update_systemic_audio_latencies();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::set_systemic_midi_input_latency (std::string const device, uint32_t sl)
|
|
{
|
|
struct AlsaMidiDeviceInfo * nfo = midi_device_info(device);
|
|
if (!nfo) return -1;
|
|
nfo->systemic_input_latency = sl;
|
|
if (_run && nfo->enabled) {
|
|
update_systemic_midi_latencies ();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::set_systemic_midi_output_latency (std::string const device, uint32_t sl)
|
|
{
|
|
struct AlsaMidiDeviceInfo * nfo = midi_device_info(device);
|
|
if (!nfo) return -1;
|
|
nfo->systemic_output_latency = sl;
|
|
if (_run && nfo->enabled) {
|
|
update_systemic_midi_latencies ();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
AlsaAudioBackend::update_systemic_audio_latencies ()
|
|
{
|
|
const uint32_t lcpp = (_periods_per_cycle - 2) * _samples_per_period;
|
|
LatencyRange lr;
|
|
|
|
lr.min = lr.max = lcpp + (_measure_latency ? 0 : _systemic_audio_input_latency);
|
|
for (std::vector<AlsaPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) {
|
|
set_latency_range (*it, true, lr);
|
|
}
|
|
|
|
lr.min = lr.max = (_measure_latency ? 0 : _systemic_audio_output_latency);
|
|
for (std::vector<AlsaPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
|
|
set_latency_range (*it, false, lr);
|
|
}
|
|
update_latencies ();
|
|
}
|
|
|
|
void
|
|
AlsaAudioBackend::update_systemic_midi_latencies ()
|
|
{
|
|
uint32_t i = 0;
|
|
for (std::vector<AlsaPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
|
|
assert (_rmidi_out.size() > i);
|
|
AlsaMidiOut *rm = _rmidi_out.at(i);
|
|
struct AlsaMidiDeviceInfo * nfo = midi_device_info (rm->name());
|
|
assert (nfo);
|
|
LatencyRange lr;
|
|
lr.min = lr.max = (_measure_latency ? 0 : nfo->systemic_output_latency);
|
|
set_latency_range (*it, false, lr);
|
|
}
|
|
|
|
i = 0;
|
|
for (std::vector<AlsaPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
|
|
assert (_rmidi_in.size() > i);
|
|
AlsaMidiIO *rm = _rmidi_in.at(i);
|
|
struct AlsaMidiDeviceInfo * nfo = midi_device_info (rm->name());
|
|
assert (nfo);
|
|
LatencyRange lr;
|
|
lr.min = lr.max = (_measure_latency ? 0 : nfo->systemic_input_latency);
|
|
set_latency_range (*it, true, lr);
|
|
}
|
|
update_latencies ();
|
|
}
|
|
|
|
/* Retrieving parameters */
|
|
std::string
|
|
AlsaAudioBackend::device_name () const
|
|
{
|
|
if (_input_audio_device != get_standard_device_name(DeviceNone)) {
|
|
return _input_audio_device;
|
|
}
|
|
if (_output_audio_device != get_standard_device_name(DeviceNone)) {
|
|
return _output_audio_device;
|
|
}
|
|
return "";
|
|
}
|
|
|
|
std::string
|
|
AlsaAudioBackend::input_device_name () const
|
|
{
|
|
return _input_audio_device;
|
|
}
|
|
|
|
std::string
|
|
AlsaAudioBackend::output_device_name () const
|
|
{
|
|
return _output_audio_device;
|
|
}
|
|
|
|
float
|
|
AlsaAudioBackend::sample_rate () const
|
|
{
|
|
return _samplerate;
|
|
}
|
|
|
|
uint32_t
|
|
AlsaAudioBackend::buffer_size () const
|
|
{
|
|
return _samples_per_period;
|
|
}
|
|
|
|
uint32_t
|
|
AlsaAudioBackend::period_size () const
|
|
{
|
|
return _periods_per_cycle;
|
|
}
|
|
|
|
bool
|
|
AlsaAudioBackend::interleaved () const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
uint32_t
|
|
AlsaAudioBackend::input_channels () const
|
|
{
|
|
return _n_inputs;
|
|
}
|
|
|
|
uint32_t
|
|
AlsaAudioBackend::output_channels () const
|
|
{
|
|
return _n_outputs;
|
|
}
|
|
|
|
uint32_t
|
|
AlsaAudioBackend::systemic_input_latency () const
|
|
{
|
|
return _systemic_audio_input_latency;
|
|
}
|
|
|
|
uint32_t
|
|
AlsaAudioBackend::systemic_output_latency () const
|
|
{
|
|
return _systemic_audio_output_latency;
|
|
}
|
|
|
|
uint32_t
|
|
AlsaAudioBackend::systemic_midi_input_latency (std::string const device) const
|
|
{
|
|
struct AlsaMidiDeviceInfo * nfo = midi_device_info(device);
|
|
if (!nfo) return 0;
|
|
return nfo->systemic_input_latency;
|
|
}
|
|
|
|
uint32_t
|
|
AlsaAudioBackend::systemic_midi_output_latency (std::string const device) const
|
|
{
|
|
struct AlsaMidiDeviceInfo * nfo = midi_device_info(device);
|
|
if (!nfo) return 0;
|
|
return nfo->systemic_output_latency;
|
|
}
|
|
|
|
/* MIDI */
|
|
struct AlsaAudioBackend::AlsaMidiDeviceInfo *
|
|
AlsaAudioBackend::midi_device_info(std::string const name) const {
|
|
for (std::map<std::string, struct AlsaMidiDeviceInfo*>::const_iterator i = _midi_devices.begin (); i != _midi_devices.end(); ++i) {
|
|
if (i->first == name) {
|
|
return (i->second);
|
|
}
|
|
}
|
|
|
|
assert(_midi_driver_option != get_standard_device_name(DeviceNone));
|
|
|
|
std::map<std::string, std::string> devices;
|
|
if (_midi_driver_option == _("ALSA raw devices")) {
|
|
get_alsa_rawmidi_device_names(devices);
|
|
} else {
|
|
get_alsa_sequencer_names (devices);
|
|
}
|
|
|
|
for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
|
|
if (i->first == name) {
|
|
_midi_devices[name] = new AlsaMidiDeviceInfo();
|
|
return _midi_devices[name];
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
std::vector<std::string>
|
|
AlsaAudioBackend::enumerate_midi_options () const
|
|
{
|
|
if (_midi_options.empty()) {
|
|
_midi_options.push_back (_("ALSA raw devices"));
|
|
_midi_options.push_back (_("ALSA sequencer"));
|
|
_midi_options.push_back (get_standard_device_name(DeviceNone));
|
|
}
|
|
return _midi_options;
|
|
}
|
|
|
|
std::vector<AudioBackend::DeviceStatus>
|
|
AlsaAudioBackend::enumerate_midi_devices () const
|
|
{
|
|
_midi_device_status.clear();
|
|
std::map<std::string, std::string> devices;
|
|
|
|
if (_midi_driver_option == _("ALSA raw devices")) {
|
|
get_alsa_rawmidi_device_names (devices);
|
|
}
|
|
else if (_midi_driver_option == _("ALSA sequencer")) {
|
|
get_alsa_sequencer_names (devices);
|
|
}
|
|
|
|
for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
|
|
_midi_device_status.push_back (DeviceStatus (i->first, true));
|
|
}
|
|
return _midi_device_status;
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::set_midi_option (const std::string& opt)
|
|
{
|
|
if (opt != get_standard_device_name(DeviceNone) && opt != _("ALSA raw devices") && opt != _("ALSA sequencer")) {
|
|
return -1;
|
|
}
|
|
if (_run && _midi_driver_option != opt) {
|
|
return -1;
|
|
}
|
|
_midi_driver_option = opt;
|
|
return 0;
|
|
}
|
|
|
|
std::string
|
|
AlsaAudioBackend::midi_option () const
|
|
{
|
|
return _midi_driver_option;
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::set_midi_device_enabled (std::string const device, bool enable)
|
|
{
|
|
struct AlsaMidiDeviceInfo * nfo = midi_device_info(device);
|
|
if (!nfo) return -1;
|
|
const bool prev_enabled = nfo->enabled;
|
|
nfo->enabled = enable;
|
|
|
|
if (_run && prev_enabled != enable) {
|
|
if (enable) {
|
|
// add ports for the given device
|
|
register_system_midi_ports(device);
|
|
} else {
|
|
// remove all ports provided by the given device
|
|
uint32_t i = 0;
|
|
for (std::vector<AlsaPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end ();) {
|
|
assert (_rmidi_out.size() > i);
|
|
AlsaMidiOut *rm = _rmidi_out.at(i);
|
|
if (rm->name () != device) { ++it; ++i; continue; }
|
|
it = _system_midi_out.erase (it);
|
|
unregister_port (*it);
|
|
rm->stop();
|
|
_rmidi_out.erase (_rmidi_out.begin() + i);
|
|
delete rm;
|
|
}
|
|
|
|
i = 0;
|
|
for (std::vector<AlsaPort*>::iterator it = _system_midi_in.begin (); it != _system_midi_in.end ();) {
|
|
assert (_rmidi_in.size() > i);
|
|
AlsaMidiIn *rm = _rmidi_in.at(i);
|
|
if (rm->name () != device) { ++it; ++i; continue; }
|
|
it = _system_midi_in.erase (it);
|
|
unregister_port (*it);
|
|
rm->stop();
|
|
_rmidi_in.erase (_rmidi_in.begin() + i);
|
|
delete rm;
|
|
}
|
|
}
|
|
update_systemic_midi_latencies ();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
bool
|
|
AlsaAudioBackend::midi_device_enabled (std::string const device) const
|
|
{
|
|
struct AlsaMidiDeviceInfo * nfo = midi_device_info(device);
|
|
if (!nfo) return false;
|
|
return nfo->enabled;
|
|
}
|
|
|
|
/* State Control */
|
|
|
|
static void * pthread_process (void *arg)
|
|
{
|
|
AlsaAudioBackend *d = static_cast<AlsaAudioBackend *>(arg);
|
|
d->main_process_thread ();
|
|
pthread_exit (0);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::_start (bool for_latency_measurement)
|
|
{
|
|
if (!_active && _run) {
|
|
// recover from 'halted', reap threads
|
|
stop();
|
|
}
|
|
|
|
if (_active || _run) {
|
|
if (for_latency_measurement != _measure_latency) {
|
|
_measure_latency = for_latency_measurement;
|
|
update_systemic_audio_latencies();
|
|
update_systemic_midi_latencies ();
|
|
PBD::info << _("AlsaAudioBackend: reload latencies.") << endmsg;
|
|
return NoError;
|
|
}
|
|
PBD::info << _("AlsaAudioBackend: already active.") << endmsg;
|
|
return BackendReinitializationError;
|
|
}
|
|
|
|
if (_ports.size () || _portmap.size ()) {
|
|
PBD::warning << _("AlsaAudioBackend: recovering from unclean shutdown, port registry is not empty.") << endmsg;
|
|
_system_inputs.clear();
|
|
_system_outputs.clear();
|
|
_system_midi_in.clear();
|
|
_system_midi_out.clear();
|
|
_ports.clear();
|
|
_portmap.clear();
|
|
}
|
|
|
|
/* reset internal state */
|
|
_dsp_load = 0;
|
|
_freewheeling = false;
|
|
_freewheel = false;
|
|
_last_process_start = 0;
|
|
|
|
release_device();
|
|
|
|
assert(_rmidi_in.size() == 0);
|
|
assert(_rmidi_out.size() == 0);
|
|
assert(_pcmi == 0);
|
|
|
|
int duplex = 0;
|
|
std::string audio_device;
|
|
std::string alsa_device;
|
|
std::map<std::string, std::string> devices;
|
|
|
|
if (_input_audio_device == get_standard_device_name(DeviceNone) && _output_audio_device == get_standard_device_name(DeviceNone)) {
|
|
PBD::error << _("AlsaAudioBackend: At least one of input or output device needs to be set.");
|
|
return AudioDeviceInvalidError;
|
|
}
|
|
|
|
if (_input_audio_device != _output_audio_device) {
|
|
if (_input_audio_device != get_standard_device_name(DeviceNone) && _output_audio_device != get_standard_device_name(DeviceNone)) {
|
|
PBD::error << _("AlsaAudioBackend: Cannot use two different devices.");
|
|
return AudioDeviceInvalidError;
|
|
}
|
|
if (_input_audio_device != get_standard_device_name(DeviceNone)) {
|
|
get_alsa_audio_device_names(devices, HalfDuplexIn);
|
|
audio_device = _input_audio_device;
|
|
duplex = 1;
|
|
} else {
|
|
get_alsa_audio_device_names(devices, HalfDuplexOut);
|
|
audio_device = _output_audio_device;
|
|
duplex = 2;
|
|
}
|
|
} else {
|
|
get_alsa_audio_device_names(devices);
|
|
audio_device = _input_audio_device;
|
|
duplex = 3;
|
|
}
|
|
|
|
for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
|
|
if (i->first == audio_device) {
|
|
alsa_device = i->second;
|
|
break;
|
|
}
|
|
}
|
|
if (alsa_device == "") {
|
|
PBD::error << _("AlsaAudioBackend: Cannot find configured device. Is it still connected?");
|
|
return AudioDeviceNotAvailableError;
|
|
}
|
|
|
|
acquire_device(alsa_device.c_str());
|
|
_pcmi = new Alsa_pcmi (
|
|
(duplex & 2) ? alsa_device.c_str() : NULL,
|
|
(duplex & 1) ? alsa_device.c_str() : NULL,
|
|
/* ctrl name */ 0,
|
|
_samplerate, _samples_per_period,
|
|
_periods_per_cycle, /* _periods_per_cycle */ 2,
|
|
/* debug */ 0);
|
|
|
|
AudioBackend::ErrorCode error_code = NoError;
|
|
switch (_pcmi->state()) {
|
|
case 0: /* OK */
|
|
break;
|
|
case -1:
|
|
PBD::error << _("AlsaAudioBackend: failed to open device.") << endmsg;
|
|
error_code = AudioDeviceOpenError;
|
|
break;
|
|
case -2:
|
|
PBD::error << _("AlsaAudioBackend: failed to allocate parameters.") << endmsg;
|
|
error_code = AudioDeviceOpenError;
|
|
break;
|
|
case -3:
|
|
PBD::error << _("AlsaAudioBackend: cannot set requested sample rate.")
|
|
<< endmsg;
|
|
error_code = SampleRateNotSupportedError;
|
|
break;
|
|
case -4:
|
|
PBD::error << _("AlsaAudioBackend: cannot set requested period size.")
|
|
<< endmsg;
|
|
error_code = PeriodSizeNotSupportedError;
|
|
break;
|
|
case -5:
|
|
PBD::error << _("AlsaAudioBackend: cannot set requested number of periods.")
|
|
<< endmsg;
|
|
error_code = PeriodCountNotSupportedError;
|
|
break;
|
|
case -6:
|
|
PBD::error << _("AlsaAudioBackend: unsupported sample format.") << endmsg;
|
|
error_code = SampleFormatNotSupportedError;
|
|
break;
|
|
default:
|
|
PBD::error << _("AlsaAudioBackend: initialization failed.") << endmsg;
|
|
error_code = AudioDeviceOpenError;
|
|
break;
|
|
}
|
|
|
|
if (_pcmi->state ()) {
|
|
delete _pcmi; _pcmi = 0;
|
|
release_device();
|
|
return error_code;
|
|
}
|
|
|
|
#ifndef NDEBUG
|
|
_pcmi->printinfo ();
|
|
#endif
|
|
|
|
if (_n_outputs != _pcmi->nplay ()) {
|
|
if (_n_outputs == 0) {
|
|
_n_outputs = _pcmi->nplay ();
|
|
} else {
|
|
_n_outputs = std::min (_n_outputs, _pcmi->nplay ());
|
|
}
|
|
PBD::warning << _("AlsaAudioBackend: adjusted output channel count to match device.") << endmsg;
|
|
}
|
|
|
|
if (_n_inputs != _pcmi->ncapt ()) {
|
|
if (_n_inputs == 0) {
|
|
_n_inputs = _pcmi->ncapt ();
|
|
} else {
|
|
_n_inputs = std::min (_n_inputs, _pcmi->ncapt ());
|
|
}
|
|
PBD::warning << _("AlsaAudioBackend: adjusted input channel count to match device.") << endmsg;
|
|
}
|
|
|
|
if (_pcmi->fsize() != _samples_per_period) {
|
|
_samples_per_period = _pcmi->fsize();
|
|
PBD::warning << _("AlsaAudioBackend: samples per period does not match.") << endmsg;
|
|
}
|
|
|
|
if (_pcmi->fsamp() != _samplerate) {
|
|
_samplerate = _pcmi->fsamp();
|
|
engine.sample_rate_change (_samplerate);
|
|
PBD::warning << _("AlsaAudioBackend: sample rate does not match.") << endmsg;
|
|
}
|
|
|
|
_measure_latency = for_latency_measurement;
|
|
|
|
_midi_ins = _midi_outs = 0;
|
|
register_system_midi_ports();
|
|
|
|
if (register_system_audio_ports()) {
|
|
PBD::error << _("AlsaAudioBackend: failed to register system ports.") << endmsg;
|
|
delete _pcmi; _pcmi = 0;
|
|
release_device();
|
|
return PortRegistrationError;
|
|
}
|
|
|
|
engine.sample_rate_change (_samplerate);
|
|
engine.buffer_size_change (_samples_per_period);
|
|
|
|
if (engine.reestablish_ports ()) {
|
|
PBD::error << _("AlsaAudioBackend: Could not re-establish ports.") << endmsg;
|
|
delete _pcmi; _pcmi = 0;
|
|
release_device();
|
|
return PortReconnectError;
|
|
}
|
|
|
|
engine.reconnect_ports ();
|
|
_run = true;
|
|
_port_change_flag = false;
|
|
|
|
if (_realtime_pthread_create (SCHED_FIFO, -20, 100000,
|
|
&_main_thread, pthread_process, this))
|
|
{
|
|
if (pthread_create (&_main_thread, NULL, pthread_process, this))
|
|
{
|
|
PBD::error << _("AlsaAudioBackend: failed to create process thread.") << endmsg;
|
|
delete _pcmi; _pcmi = 0;
|
|
release_device();
|
|
_run = false;
|
|
return ProcessThreadStartError;
|
|
} else {
|
|
PBD::warning << _("AlsaAudioBackend: cannot acquire realtime permissions.") << endmsg;
|
|
}
|
|
}
|
|
|
|
int timeout = 5000;
|
|
while (!_active && --timeout > 0) { Glib::usleep (1000); }
|
|
|
|
if (timeout == 0 || !_active) {
|
|
PBD::error << _("AlsaAudioBackend: failed to start process thread.") << endmsg;
|
|
delete _pcmi; _pcmi = 0;
|
|
release_device();
|
|
_run = false;
|
|
return ProcessThreadStartError;
|
|
}
|
|
|
|
return NoError;
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::stop ()
|
|
{
|
|
void *status;
|
|
if (!_run) {
|
|
return 0;
|
|
}
|
|
|
|
_run = false;
|
|
if (pthread_join (_main_thread, &status)) {
|
|
PBD::error << _("AlsaAudioBackend: failed to terminate.") << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
while (!_rmidi_out.empty ()) {
|
|
AlsaMidiIO *m = _rmidi_out.back ();
|
|
m->stop();
|
|
_rmidi_out.pop_back ();
|
|
delete m;
|
|
}
|
|
while (!_rmidi_in.empty ()) {
|
|
AlsaMidiIO *m = _rmidi_in.back ();
|
|
m->stop();
|
|
_rmidi_in.pop_back ();
|
|
delete m;
|
|
}
|
|
|
|
unregister_ports();
|
|
delete _pcmi; _pcmi = 0;
|
|
_midi_ins = _midi_outs = 0;
|
|
release_device();
|
|
_measure_latency = false;
|
|
|
|
return (_active == false) ? 0 : -1;
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::freewheel (bool onoff)
|
|
{
|
|
_freewheeling = onoff;
|
|
return 0;
|
|
}
|
|
|
|
float
|
|
AlsaAudioBackend::dsp_load () const
|
|
{
|
|
return 100.f * _dsp_load;
|
|
}
|
|
|
|
size_t
|
|
AlsaAudioBackend::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 */
|
|
framepos_t
|
|
AlsaAudioBackend::sample_time ()
|
|
{
|
|
return _processed_samples;
|
|
}
|
|
|
|
framepos_t
|
|
AlsaAudioBackend::sample_time_at_cycle_start ()
|
|
{
|
|
return _processed_samples;
|
|
}
|
|
|
|
pframes_t
|
|
AlsaAudioBackend::samples_since_cycle_start ()
|
|
{
|
|
if (!_active || !_run || _freewheeling || _freewheel) {
|
|
return 0;
|
|
}
|
|
if (_last_process_start == 0) {
|
|
return 0;
|
|
}
|
|
|
|
const int64_t elapsed_time_us = g_get_monotonic_time() - _last_process_start;
|
|
return std::max((pframes_t)0, (pframes_t)rint(1e-6 * elapsed_time_us * _samplerate));
|
|
}
|
|
|
|
|
|
void *
|
|
AlsaAudioBackend::alsa_process_thread (void *arg)
|
|
{
|
|
ThreadData* td = reinterpret_cast<ThreadData*> (arg);
|
|
boost::function<void ()> f = td->f;
|
|
delete td;
|
|
f ();
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::create_process_thread (boost::function<void()> func)
|
|
{
|
|
pthread_t thread_id;
|
|
pthread_attr_t attr;
|
|
size_t stacksize = 100000;
|
|
|
|
ThreadData* td = new ThreadData (this, func, stacksize);
|
|
|
|
if (_realtime_pthread_create (SCHED_FIFO, -22, stacksize,
|
|
&thread_id, alsa_process_thread, td)) {
|
|
pthread_attr_init (&attr);
|
|
pthread_attr_setstacksize (&attr, stacksize);
|
|
if (pthread_create (&thread_id, &attr, alsa_process_thread, td)) {
|
|
PBD::error << _("AudioEngine: cannot create process thread.") << endmsg;
|
|
pthread_attr_destroy (&attr);
|
|
return -1;
|
|
}
|
|
pthread_attr_destroy (&attr);
|
|
}
|
|
|
|
_threads.push_back (thread_id);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::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)) {
|
|
PBD::error << _("AudioEngine: cannot terminate process thread.") << endmsg;
|
|
rv -= 1;
|
|
}
|
|
}
|
|
_threads.clear ();
|
|
return rv;
|
|
}
|
|
|
|
bool
|
|
AlsaAudioBackend::in_process_thread ()
|
|
{
|
|
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
|
|
AlsaAudioBackend::process_thread_count ()
|
|
{
|
|
return _threads.size ();
|
|
}
|
|
|
|
void
|
|
AlsaAudioBackend::update_latencies ()
|
|
{
|
|
// trigger latency callback in RT thread (locked graph)
|
|
port_connect_add_remove_callback();
|
|
}
|
|
|
|
/* PORTENGINE API */
|
|
|
|
void*
|
|
AlsaAudioBackend::private_handle () const
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
const std::string&
|
|
AlsaAudioBackend::my_name () const
|
|
{
|
|
return _instance_name;
|
|
}
|
|
|
|
bool
|
|
AlsaAudioBackend::available () const
|
|
{
|
|
return _run && _active;
|
|
}
|
|
|
|
uint32_t
|
|
AlsaAudioBackend::port_name_size () const
|
|
{
|
|
return 256;
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::set_port_name (PortEngine::PortHandle port, const std::string& name)
|
|
{
|
|
std::string newname (_instance_name + ":" + name);
|
|
if (!valid_port (port)) {
|
|
PBD::error << _("AlsaBackend::set_port_name: Invalid Port") << endmsg;
|
|
return -1;
|
|
}
|
|
if (find_port (newname)) {
|
|
PBD::error << _("AlsaBackend::set_port_name: Port with given name already exists") << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
AlsaPort* p = static_cast<AlsaPort*>(port);
|
|
_portmap.erase (p->name());
|
|
_portmap.insert (make_pair (newname, p));
|
|
return p->set_name (newname);
|
|
}
|
|
|
|
std::string
|
|
AlsaAudioBackend::get_port_name (PortEngine::PortHandle port) const
|
|
{
|
|
if (!valid_port (port)) {
|
|
PBD::warning << _("AlsaBackend::get_port_name: Invalid Port(s)") << endmsg;
|
|
return std::string ();
|
|
}
|
|
return static_cast<AlsaPort*>(port)->name ();
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::get_port_property (PortHandle port, const std::string& key, std::string& value, std::string& type) const
|
|
{
|
|
if (!valid_port (port)) {
|
|
PBD::warning << _("AlsaBackend::get_port_property: Invalid Port(s)") << endmsg;
|
|
return -1;
|
|
}
|
|
if (key == "http://jackaudio.org/metadata/pretty-name") {
|
|
type = "";
|
|
value = static_cast<AlsaPort*>(port)->pretty_name ();
|
|
if (!value.empty()) {
|
|
return 0;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::set_port_property (PortHandle port, const std::string& key, const std::string& value, const std::string& type)
|
|
{
|
|
if (!valid_port (port)) {
|
|
PBD::warning << _("AlsaBackend::set_port_property: Invalid Port(s)") << endmsg;
|
|
return -1;
|
|
}
|
|
if (key == "http://jackaudio.org/metadata/pretty-name" && type.empty ()) {
|
|
static_cast<AlsaPort*>(port)->set_pretty_name (value);
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
PortEngine::PortHandle
|
|
AlsaAudioBackend::get_port_by_name (const std::string& name) const
|
|
{
|
|
PortHandle port = (PortHandle) find_port (name);
|
|
return port;
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::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 (PortIndex::const_iterator i = _ports.begin (); i != _ports.end (); ++i) {
|
|
AlsaPort* port = *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
|
|
AlsaAudioBackend::port_data_type (PortEngine::PortHandle port) const
|
|
{
|
|
if (!valid_port (port)) {
|
|
return DataType::NIL;
|
|
}
|
|
return static_cast<AlsaPort*>(port)->type ();
|
|
}
|
|
|
|
PortEngine::PortHandle
|
|
AlsaAudioBackend::register_port (
|
|
const std::string& name,
|
|
ARDOUR::DataType type,
|
|
ARDOUR::PortFlags flags)
|
|
{
|
|
if (name.size () == 0) { return 0; }
|
|
if (flags & IsPhysical) { return 0; }
|
|
return add_port (_instance_name + ":" + name, type, flags);
|
|
}
|
|
|
|
PortEngine::PortHandle
|
|
AlsaAudioBackend::add_port (
|
|
const std::string& name,
|
|
ARDOUR::DataType type,
|
|
ARDOUR::PortFlags flags)
|
|
{
|
|
assert(name.size ());
|
|
if (find_port (name)) {
|
|
PBD::error << _("AlsaBackend::register_port: Port already exists:")
|
|
<< " (" << name << ")" << endmsg;
|
|
return 0;
|
|
}
|
|
AlsaPort* port = NULL;
|
|
switch (type) {
|
|
case DataType::AUDIO:
|
|
port = new AlsaAudioPort (*this, name, flags);
|
|
break;
|
|
case DataType::MIDI:
|
|
port = new AlsaMidiPort (*this, name, flags);
|
|
break;
|
|
default:
|
|
PBD::error << _("AlsaBackend::register_port: Invalid Data Type.") << endmsg;
|
|
return 0;
|
|
}
|
|
|
|
_ports.insert (port);
|
|
_portmap.insert (make_pair (name, port));
|
|
|
|
return port;
|
|
}
|
|
|
|
void
|
|
AlsaAudioBackend::unregister_port (PortEngine::PortHandle port_handle)
|
|
{
|
|
if (!_run) {
|
|
return;
|
|
}
|
|
AlsaPort* port = static_cast<AlsaPort*>(port_handle);
|
|
PortIndex::iterator i = std::find (_ports.begin(), _ports.end(), static_cast<AlsaPort*>(port_handle));
|
|
if (i == _ports.end ()) {
|
|
PBD::error << _("AlsaBackend::unregister_port: Failed to find port") << endmsg;
|
|
return;
|
|
}
|
|
disconnect_all(port_handle);
|
|
_portmap.erase (port->name());
|
|
_ports.erase (i);
|
|
delete port;
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::register_system_audio_ports()
|
|
{
|
|
LatencyRange lr;
|
|
|
|
const int a_ins = _n_inputs;
|
|
const int a_out = _n_outputs;
|
|
|
|
const uint32_t lcpp = (_periods_per_cycle - 2) * _samples_per_period;
|
|
|
|
/* audio ports */
|
|
lr.min = lr.max = (_systemic_audio_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);
|
|
AlsaPort *ap = static_cast<AlsaPort*>(p);
|
|
//ap->set_pretty_name ("")
|
|
_system_inputs.push_back (ap);
|
|
}
|
|
|
|
lr.min = lr.max = lcpp + (_systemic_audio_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);
|
|
AlsaPort *ap = static_cast<AlsaPort*>(p);
|
|
//ap->set_pretty_name ("")
|
|
_system_outputs.push_back (ap);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* libs/ardouralsautil/devicelist.cc appends either of
|
|
* " (IO)", " (I)", or " (O)"
|
|
* depending of the device is full-duples or half-duplex
|
|
*/
|
|
static std::string replace_name_io (std::string const& name, bool in)
|
|
{
|
|
if (name.empty ()) {
|
|
return "";
|
|
}
|
|
size_t pos = name.find_last_of ('(');
|
|
if (pos == std::string::npos) {
|
|
assert (0); // this should never happen.
|
|
return name;
|
|
}
|
|
return name.substr (0, pos) + "(" + (in ? "In" : "Out") + ")";
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::register_system_midi_ports(const std::string device)
|
|
{
|
|
std::map<std::string, std::string> devices;
|
|
|
|
// TODO use consistent numbering when re-adding devices: _midi_ins, _midi_outs
|
|
|
|
if (_midi_driver_option == get_standard_device_name(DeviceNone)) {
|
|
return 0;
|
|
} else if (_midi_driver_option == _("ALSA raw devices")) {
|
|
get_alsa_rawmidi_device_names(devices);
|
|
} else {
|
|
get_alsa_sequencer_names (devices);
|
|
}
|
|
|
|
for (std::map<std::string, std::string>::const_iterator i = devices.begin (); i != devices.end(); ++i) {
|
|
if (!device.empty() && device != i->first) {
|
|
continue;
|
|
}
|
|
struct AlsaMidiDeviceInfo * nfo = midi_device_info(i->first);
|
|
if (!nfo) continue;
|
|
if (!nfo->enabled) continue;
|
|
|
|
AlsaMidiOut *mout;
|
|
if (_midi_driver_option == _("ALSA raw devices")) {
|
|
mout = new AlsaRawMidiOut (i->first, i->second.c_str());
|
|
} else {
|
|
mout = new AlsaSeqMidiOut (i->first, i->second.c_str());
|
|
}
|
|
|
|
if (mout->state ()) {
|
|
PBD::warning << string_compose (
|
|
_("AlsaMidiOut: failed to open midi device '%1'."), i->second)
|
|
<< endmsg;
|
|
delete mout;
|
|
} else {
|
|
mout->setup_timing(_samples_per_period, _samplerate);
|
|
mout->sync_time (g_get_monotonic_time());
|
|
if (mout->start ()) {
|
|
PBD::warning << string_compose (
|
|
_("AlsaMidiOut: failed to start midi device '%1'."), i->second)
|
|
<< endmsg;
|
|
delete mout;
|
|
} else {
|
|
char tmp[64];
|
|
snprintf(tmp, sizeof(tmp), "system:midi_playback_%d", ++_midi_ins);
|
|
PortHandle p = add_port(std::string(tmp), DataType::MIDI, static_cast<PortFlags>(IsInput | IsPhysical | IsTerminal));
|
|
if (!p) {
|
|
mout->stop();
|
|
delete mout;
|
|
}
|
|
LatencyRange lr;
|
|
lr.min = lr.max = (nfo->systemic_output_latency);
|
|
set_latency_range (p, true, lr);
|
|
static_cast<AlsaMidiPort*>(p)->set_n_periods(_periods_per_cycle); // TODO check MIDI alignment
|
|
AlsaPort *ap = static_cast<AlsaPort*>(p);
|
|
ap->set_pretty_name (replace_name_io (i->first, false));
|
|
_system_midi_out.push_back (ap);
|
|
_rmidi_out.push_back (mout);
|
|
}
|
|
}
|
|
|
|
AlsaMidiIn *midin;
|
|
if (_midi_driver_option == _("ALSA raw devices")) {
|
|
midin = new AlsaRawMidiIn (i->first, i->second.c_str());
|
|
} else {
|
|
midin = new AlsaSeqMidiIn (i->first, i->second.c_str());
|
|
}
|
|
|
|
if (midin->state ()) {
|
|
PBD::warning << string_compose (
|
|
_("AlsaMidiIn: failed to open midi device '%1'."), i->second)
|
|
<< endmsg;
|
|
delete midin;
|
|
} else {
|
|
midin->setup_timing(_samples_per_period, _samplerate);
|
|
midin->sync_time (g_get_monotonic_time());
|
|
if (midin->start ()) {
|
|
PBD::warning << string_compose (
|
|
_("AlsaMidiIn: failed to start midi device '%1'."), i->second)
|
|
<< endmsg;
|
|
delete midin;
|
|
} else {
|
|
char tmp[64];
|
|
snprintf(tmp, sizeof(tmp), "system:midi_capture_%d", ++_midi_outs);
|
|
PortHandle p = add_port(std::string(tmp), DataType::MIDI, static_cast<PortFlags>(IsOutput | IsPhysical | IsTerminal));
|
|
if (!p) {
|
|
midin->stop();
|
|
delete midin;
|
|
continue;
|
|
}
|
|
LatencyRange lr;
|
|
lr.min = lr.max = (nfo->systemic_input_latency);
|
|
set_latency_range (p, false, lr);
|
|
AlsaPort *ap = static_cast<AlsaPort*>(p);
|
|
ap->set_pretty_name (replace_name_io (i->first, true));
|
|
_system_midi_in.push_back (ap);
|
|
_rmidi_in.push_back (midin);
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
AlsaAudioBackend::unregister_ports (bool system_only)
|
|
{
|
|
_system_inputs.clear();
|
|
_system_outputs.clear();
|
|
_system_midi_in.clear();
|
|
_system_midi_out.clear();
|
|
|
|
for (PortIndex::iterator i = _ports.begin (); i != _ports.end ();) {
|
|
PortIndex::iterator cur = i++;
|
|
AlsaPort* port = *cur;
|
|
if (! system_only || (port->is_physical () && port->is_terminal ())) {
|
|
port->disconnect_all ();
|
|
_portmap.erase (port->name());
|
|
delete port;
|
|
_ports.erase (cur);
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::connect (const std::string& src, const std::string& dst)
|
|
{
|
|
AlsaPort* src_port = find_port (src);
|
|
AlsaPort* dst_port = find_port (dst);
|
|
|
|
if (!src_port) {
|
|
PBD::error << _("AlsaBackend::connect: Invalid Source port:")
|
|
<< " (" << src <<")" << endmsg;
|
|
return -1;
|
|
}
|
|
if (!dst_port) {
|
|
PBD::error << _("AlsaBackend::connect: Invalid Destination port:")
|
|
<< " (" << dst <<")" << endmsg;
|
|
return -1;
|
|
}
|
|
return src_port->connect (dst_port);
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::disconnect (const std::string& src, const std::string& dst)
|
|
{
|
|
AlsaPort* src_port = find_port (src);
|
|
AlsaPort* dst_port = find_port (dst);
|
|
|
|
if (!src_port || !dst_port) {
|
|
PBD::error << _("AlsaBackend::disconnect: Invalid Port(s)") << endmsg;
|
|
return -1;
|
|
}
|
|
return src_port->disconnect (dst_port);
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::connect (PortEngine::PortHandle src, const std::string& dst)
|
|
{
|
|
AlsaPort* dst_port = find_port (dst);
|
|
if (!valid_port (src)) {
|
|
PBD::error << _("AlsaBackend::connect: Invalid Source Port Handle") << endmsg;
|
|
return -1;
|
|
}
|
|
if (!dst_port) {
|
|
PBD::error << _("AlsaBackend::connect: Invalid Destination Port")
|
|
<< " (" << dst << ")" << endmsg;
|
|
return -1;
|
|
}
|
|
return static_cast<AlsaPort*>(src)->connect (dst_port);
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::disconnect (PortEngine::PortHandle src, const std::string& dst)
|
|
{
|
|
AlsaPort* dst_port = find_port (dst);
|
|
if (!valid_port (src) || !dst_port) {
|
|
PBD::error << _("AlsaBackend::disconnect: Invalid Port(s)") << endmsg;
|
|
return -1;
|
|
}
|
|
return static_cast<AlsaPort*>(src)->disconnect (dst_port);
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::disconnect_all (PortEngine::PortHandle port)
|
|
{
|
|
if (!valid_port (port)) {
|
|
PBD::error << _("AlsaBackend::disconnect_all: Invalid Port") << endmsg;
|
|
return -1;
|
|
}
|
|
static_cast<AlsaPort*>(port)->disconnect_all ();
|
|
return 0;
|
|
}
|
|
|
|
bool
|
|
AlsaAudioBackend::connected (PortEngine::PortHandle port, bool /* process_callback_safe*/)
|
|
{
|
|
if (!valid_port (port)) {
|
|
PBD::error << _("AlsaBackend::disconnect_all: Invalid Port") << endmsg;
|
|
return false;
|
|
}
|
|
return static_cast<AlsaPort*>(port)->is_connected ();
|
|
}
|
|
|
|
bool
|
|
AlsaAudioBackend::connected_to (PortEngine::PortHandle src, const std::string& dst, bool /*process_callback_safe*/)
|
|
{
|
|
AlsaPort* dst_port = find_port (dst);
|
|
#ifndef NDEBUG
|
|
if (!valid_port (src) || !dst_port) {
|
|
PBD::error << _("AlsaBackend::connected_to: Invalid Port") << endmsg;
|
|
return false;
|
|
}
|
|
#endif
|
|
return static_cast<AlsaPort*>(src)->is_connected (dst_port);
|
|
}
|
|
|
|
bool
|
|
AlsaAudioBackend::physically_connected (PortEngine::PortHandle port, bool /*process_callback_safe*/)
|
|
{
|
|
if (!valid_port (port)) {
|
|
PBD::error << _("AlsaBackend::physically_connected: Invalid Port") << endmsg;
|
|
return false;
|
|
}
|
|
return static_cast<AlsaPort*>(port)->is_physically_connected ();
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::get_connections (PortEngine::PortHandle port, std::vector<std::string>& names, bool /*process_callback_safe*/)
|
|
{
|
|
if (!valid_port (port)) {
|
|
PBD::error << _("AlsaBackend::get_connections: Invalid Port") << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
assert (0 == names.size ());
|
|
|
|
const std::set<AlsaPort*>& connected_ports = static_cast<AlsaPort*>(port)->get_connections ();
|
|
|
|
for (std::set<AlsaPort*>::const_iterator i = connected_ports.begin (); i != connected_ports.end (); ++i) {
|
|
names.push_back ((*i)->name ());
|
|
}
|
|
|
|
return (int)names.size ();
|
|
}
|
|
|
|
/* MIDI */
|
|
int
|
|
AlsaAudioBackend::midi_event_get (
|
|
pframes_t& timestamp,
|
|
size_t& size, uint8_t const** buf, void* port_buffer,
|
|
uint32_t event_index)
|
|
{
|
|
assert (buf && port_buffer);
|
|
AlsaMidiBuffer& source = * static_cast<AlsaMidiBuffer*>(port_buffer);
|
|
if (event_index >= source.size ()) {
|
|
return -1;
|
|
}
|
|
AlsaMidiEvent const& event = source[event_index];
|
|
|
|
timestamp = event.timestamp ();
|
|
size = event.size ();
|
|
*buf = event.data ();
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::midi_event_put (
|
|
void* port_buffer,
|
|
pframes_t timestamp,
|
|
const uint8_t* buffer, size_t size)
|
|
{
|
|
assert (buffer && port_buffer);
|
|
if (size >= MaxAlsaMidiEventSize) {
|
|
return -1;
|
|
}
|
|
AlsaMidiBuffer& dst = * static_cast<AlsaMidiBuffer*>(port_buffer);
|
|
#ifndef NDEBUG
|
|
if (dst.size () && (pframes_t)dst.back ().timestamp () > timestamp) {
|
|
// nevermind, ::get_buffer() sorts events
|
|
fprintf (stderr, "AlsaMidiBuffer: it's too late for this event. %d > %d\n",
|
|
(pframes_t)dst.back ().timestamp (), timestamp);
|
|
}
|
|
#endif
|
|
dst.push_back (AlsaMidiEvent (timestamp, buffer, size));
|
|
return 0;
|
|
}
|
|
|
|
uint32_t
|
|
AlsaAudioBackend::get_midi_event_count (void* port_buffer)
|
|
{
|
|
assert (port_buffer);
|
|
return static_cast<AlsaMidiBuffer*>(port_buffer)->size ();
|
|
}
|
|
|
|
void
|
|
AlsaAudioBackend::midi_clear (void* port_buffer)
|
|
{
|
|
assert (port_buffer);
|
|
AlsaMidiBuffer * buf = static_cast<AlsaMidiBuffer*>(port_buffer);
|
|
assert (buf);
|
|
buf->clear ();
|
|
}
|
|
|
|
/* Monitoring */
|
|
|
|
bool
|
|
AlsaAudioBackend::can_monitor_input () const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::request_input_monitoring (PortEngine::PortHandle, bool)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
AlsaAudioBackend::ensure_input_monitoring (PortEngine::PortHandle, bool)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
bool
|
|
AlsaAudioBackend::monitoring_input (PortEngine::PortHandle)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/* Latency management */
|
|
|
|
void
|
|
AlsaAudioBackend::set_latency_range (PortEngine::PortHandle port, bool for_playback, LatencyRange latency_range)
|
|
{
|
|
if (!valid_port (port)) {
|
|
PBD::error << _("AlsaPort::set_latency_range (): invalid port.") << endmsg;
|
|
}
|
|
static_cast<AlsaPort*>(port)->set_latency_range (latency_range, for_playback);
|
|
}
|
|
|
|
LatencyRange
|
|
AlsaAudioBackend::get_latency_range (PortEngine::PortHandle port, bool for_playback)
|
|
{
|
|
LatencyRange r;
|
|
if (!valid_port (port)) {
|
|
PBD::error << _("AlsaPort::get_latency_range (): invalid port.") << endmsg;
|
|
r.min = 0;
|
|
r.max = 0;
|
|
return r;
|
|
}
|
|
AlsaPort *p = static_cast<AlsaPort*>(port);
|
|
assert(p);
|
|
|
|
r = p->latency_range (for_playback);
|
|
if (p->is_physical() && p->is_terminal()) {
|
|
if (p->is_input() && for_playback) {
|
|
r.min += _samples_per_period;
|
|
r.max += _samples_per_period;
|
|
}
|
|
if (p->is_output() && !for_playback) {
|
|
r.min += _samples_per_period;
|
|
r.max += _samples_per_period;
|
|
}
|
|
}
|
|
return r;
|
|
}
|
|
|
|
/* Discovering physical ports */
|
|
|
|
bool
|
|
AlsaAudioBackend::port_is_physical (PortEngine::PortHandle port) const
|
|
{
|
|
if (!valid_port (port)) {
|
|
PBD::error << _("AlsaPort::port_is_physical (): invalid port.") << endmsg;
|
|
return false;
|
|
}
|
|
return static_cast<AlsaPort*>(port)->is_physical ();
|
|
}
|
|
|
|
void
|
|
AlsaAudioBackend::get_physical_outputs (DataType type, std::vector<std::string>& port_names)
|
|
{
|
|
for (PortIndex::iterator i = _ports.begin (); i != _ports.end (); ++i) {
|
|
AlsaPort* port = *i;
|
|
if ((port->type () == type) && port->is_input () && port->is_physical ()) {
|
|
port_names.push_back (port->name ());
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
AlsaAudioBackend::get_physical_inputs (DataType type, std::vector<std::string>& port_names)
|
|
{
|
|
for (PortIndex::iterator i = _ports.begin (); i != _ports.end (); ++i) {
|
|
AlsaPort* port = *i;
|
|
if ((port->type () == type) && port->is_output () && port->is_physical ()) {
|
|
port_names.push_back (port->name ());
|
|
}
|
|
}
|
|
}
|
|
|
|
ChanCount
|
|
AlsaAudioBackend::n_physical_outputs () const
|
|
{
|
|
int n_midi = 0;
|
|
int n_audio = 0;
|
|
for (PortIndex::const_iterator i = _ports.begin (); i != _ports.end (); ++i) {
|
|
AlsaPort* port = *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
|
|
AlsaAudioBackend::n_physical_inputs () const
|
|
{
|
|
int n_midi = 0;
|
|
int n_audio = 0;
|
|
for (PortIndex::const_iterator i = _ports.begin (); i != _ports.end (); ++i) {
|
|
AlsaPort* port = *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*
|
|
AlsaAudioBackend::get_buffer (PortEngine::PortHandle port, pframes_t nframes)
|
|
{
|
|
assert (port);
|
|
assert (valid_port (port));
|
|
return static_cast<AlsaPort*>(port)->get_buffer (nframes);
|
|
}
|
|
|
|
/* Engine Process */
|
|
void *
|
|
AlsaAudioBackend::main_process_thread ()
|
|
{
|
|
AudioEngine::thread_init_callback (this);
|
|
_active = true;
|
|
_processed_samples = 0;
|
|
|
|
uint64_t clock1;
|
|
_pcmi->pcm_start ();
|
|
int no_proc_errors = 0;
|
|
const int bailout = 2 * _samplerate / _samples_per_period;
|
|
|
|
manager.registration_callback();
|
|
manager.graph_order_callback();
|
|
|
|
while (_run) {
|
|
long nr;
|
|
bool xrun = false;
|
|
|
|
if (_freewheeling != _freewheel) {
|
|
_freewheel = _freewheeling;
|
|
engine.freewheel_callback (_freewheel);
|
|
}
|
|
|
|
if (!_freewheel) {
|
|
nr = _pcmi->pcm_wait ();
|
|
|
|
if (_pcmi->state () > 0) {
|
|
++no_proc_errors;
|
|
xrun = true;
|
|
}
|
|
if (_pcmi->state () < 0) {
|
|
PBD::error << _("AlsaAudioBackend: I/O error. Audio Process Terminated.") << endmsg;
|
|
break;
|
|
}
|
|
if (no_proc_errors > bailout) {
|
|
PBD::error
|
|
<< string_compose (
|
|
_("AlsaAudioBackend: Audio Process Terminated after %1 consecutive x-runs."),
|
|
no_proc_errors)
|
|
<< endmsg;
|
|
break;
|
|
}
|
|
|
|
while (nr >= (long)_samples_per_period && _freewheeling == _freewheel) {
|
|
uint32_t i = 0;
|
|
clock1 = g_get_monotonic_time();
|
|
no_proc_errors = 0;
|
|
|
|
_pcmi->capt_init (_samples_per_period);
|
|
for (std::vector<AlsaPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it, ++i) {
|
|
_pcmi->capt_chan (i, (float*)((*it)->get_buffer(_samples_per_period)), _samples_per_period);
|
|
}
|
|
_pcmi->capt_done (_samples_per_period);
|
|
|
|
/* de-queue incoming midi*/
|
|
i = 0;
|
|
for (std::vector<AlsaPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
|
|
assert (_rmidi_in.size() > i);
|
|
AlsaMidiIn *rm = _rmidi_in.at(i);
|
|
void *bptr = (*it)->get_buffer(0);
|
|
pframes_t time;
|
|
uint8_t data[MaxAlsaMidiEventSize];
|
|
size_t size = sizeof(data);
|
|
midi_clear(bptr);
|
|
while (rm->recv_event (time, data, size)) {
|
|
midi_event_put(bptr, time, data, size);
|
|
size = sizeof(data);
|
|
}
|
|
rm->sync_time (clock1);
|
|
}
|
|
|
|
for (std::vector<AlsaPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it) {
|
|
memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
|
|
}
|
|
|
|
/* call engine process callback */
|
|
_last_process_start = g_get_monotonic_time();
|
|
if (engine.process_callback (_samples_per_period)) {
|
|
_pcmi->pcm_stop ();
|
|
_active = false;
|
|
return 0;
|
|
}
|
|
|
|
for (std::vector<AlsaPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
|
|
static_cast<AlsaMidiPort*>(*it)->next_period();
|
|
}
|
|
|
|
/* queue outgoing midi */
|
|
i = 0;
|
|
for (std::vector<AlsaPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
|
|
assert (_rmidi_out.size() > i);
|
|
const AlsaMidiBuffer * src = static_cast<const AlsaMidiPort*>(*it)->const_buffer();
|
|
AlsaMidiOut *rm = _rmidi_out.at(i);
|
|
rm->sync_time (clock1);
|
|
for (AlsaMidiBuffer::const_iterator mit = src->begin (); mit != src->end (); ++mit) {
|
|
rm->send_event (mit->timestamp (), mit->data (), mit->size ());
|
|
}
|
|
}
|
|
|
|
/* write back audio */
|
|
i = 0;
|
|
_pcmi->play_init (_samples_per_period);
|
|
for (std::vector<AlsaPort*>::const_iterator it = _system_outputs.begin (); it != _system_outputs.end (); ++it, ++i) {
|
|
_pcmi->play_chan (i, (const float*)(*it)->get_buffer (_samples_per_period), _samples_per_period);
|
|
}
|
|
for (; i < _pcmi->nplay (); ++i) {
|
|
_pcmi->clear_chan (i, _samples_per_period);
|
|
}
|
|
_pcmi->play_done (_samples_per_period);
|
|
nr -= _samples_per_period;
|
|
_processed_samples += _samples_per_period;
|
|
|
|
_dsp_load_calc.set_max_time(_samplerate, _samples_per_period);
|
|
_dsp_load_calc.set_start_timestamp_us (clock1);
|
|
_dsp_load_calc.set_stop_timestamp_us (g_get_monotonic_time());
|
|
_dsp_load = _dsp_load_calc.get_dsp_load ();
|
|
}
|
|
|
|
if (xrun && (_pcmi->capt_xrun() > 0 || _pcmi->play_xrun() > 0)) {
|
|
engine.Xrun ();
|
|
#if 0
|
|
fprintf(stderr, "ALSA x-run read: %.2f ms, write: %.2f ms\n",
|
|
_pcmi->capt_xrun() * 1000.0, _pcmi->play_xrun() * 1000.0);
|
|
#endif
|
|
}
|
|
} else {
|
|
// Freewheelin'
|
|
|
|
// zero audio input buffers
|
|
for (std::vector<AlsaPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
|
|
memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
|
|
}
|
|
|
|
clock1 = g_get_monotonic_time();
|
|
uint32_t i = 0;
|
|
for (std::vector<AlsaPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
|
|
static_cast<AlsaMidiBuffer*>((*it)->get_buffer(0))->clear ();
|
|
AlsaMidiIn *rm = _rmidi_in.at(i);
|
|
void *bptr = (*it)->get_buffer(0);
|
|
midi_clear(bptr); // zero midi buffer
|
|
|
|
// TODO add an API call for this.
|
|
pframes_t time;
|
|
uint8_t data[64]; // match MaxAlsaEventSize in alsa_rawmidi.cc
|
|
size_t size = sizeof(data);
|
|
while (rm->recv_event (time, data, size)) {
|
|
; // discard midi-data from HW.
|
|
}
|
|
rm->sync_time (clock1);
|
|
}
|
|
|
|
_last_process_start = 0;
|
|
if (engine.process_callback (_samples_per_period)) {
|
|
_pcmi->pcm_stop ();
|
|
_active = false;
|
|
return 0;
|
|
}
|
|
|
|
// drop all outgoing MIDI messages
|
|
for (std::vector<AlsaPort*>::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
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
}
|
|
_pcmi->pcm_stop ();
|
|
_active = false;
|
|
if (_run) {
|
|
engine.halted_callback("ALSA I/O error.");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
|
|
static boost::shared_ptr<AlsaAudioBackend> _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 = {
|
|
"ALSA",
|
|
instantiate,
|
|
deinstantiate,
|
|
backend_factory,
|
|
already_configured,
|
|
available
|
|
};
|
|
|
|
static boost::shared_ptr<AudioBackend>
|
|
backend_factory (AudioEngine& e)
|
|
{
|
|
if (!_instance) {
|
|
_instance.reset (new AlsaAudioBackend (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;
|
|
}
|
|
|
|
|
|
/******************************************************************************/
|
|
AlsaPort::AlsaPort (AlsaAudioBackend &b, const std::string& name, PortFlags flags)
|
|
: _alsa_backend (b)
|
|
, _name (name)
|
|
, _flags (flags)
|
|
{
|
|
_capture_latency_range.min = 0;
|
|
_capture_latency_range.max = 0;
|
|
_playback_latency_range.min = 0;
|
|
_playback_latency_range.max = 0;
|
|
}
|
|
|
|
AlsaPort::~AlsaPort () {
|
|
disconnect_all ();
|
|
}
|
|
|
|
|
|
int AlsaPort::connect (AlsaPort *port)
|
|
{
|
|
if (!port) {
|
|
PBD::error << _("AlsaPort::connect (): invalid (null) port") << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
if (type () != port->type ()) {
|
|
PBD::error << _("AlsaPort::connect (): wrong port-type") << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
if (is_output () && port->is_output ()) {
|
|
PBD::error << _("AlsaPort::connect (): cannot inter-connect output ports.") << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
if (is_input () && port->is_input ()) {
|
|
PBD::error << _("AlsaPort::connect (): cannot inter-connect input ports.") << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
if (this == port) {
|
|
PBD::error << _("AlsaPort::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 << _("AlsaPort::connect (): ports are already connected:")
|
|
<< " (" << name () << ") -> (" << port->name () << ")"
|
|
<< endmsg;
|
|
#endif
|
|
return -1;
|
|
}
|
|
|
|
_connect (port, true);
|
|
return 0;
|
|
}
|
|
|
|
|
|
void AlsaPort::_connect (AlsaPort *port, bool callback)
|
|
{
|
|
_connections.insert (port);
|
|
if (callback) {
|
|
port->_connect (this, false);
|
|
_alsa_backend.port_connect_callback (name(), port->name(), true);
|
|
}
|
|
}
|
|
|
|
int AlsaPort::disconnect (AlsaPort *port)
|
|
{
|
|
if (!port) {
|
|
PBD::error << _("AlsaPort::disconnect (): invalid (null) port") << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
if (!is_connected (port)) {
|
|
PBD::error << _("AlsaPort::disconnect (): ports are not connected:")
|
|
<< " (" << name () << ") -> (" << port->name () << ")"
|
|
<< endmsg;
|
|
return -1;
|
|
}
|
|
_disconnect (port, true);
|
|
return 0;
|
|
}
|
|
|
|
void AlsaPort::_disconnect (AlsaPort *port, bool callback)
|
|
{
|
|
std::set<AlsaPort*>::iterator it = _connections.find (port);
|
|
assert (it != _connections.end ());
|
|
_connections.erase (it);
|
|
if (callback) {
|
|
port->_disconnect (this, false);
|
|
_alsa_backend.port_connect_callback (name(), port->name(), false);
|
|
}
|
|
}
|
|
|
|
|
|
void AlsaPort::disconnect_all ()
|
|
{
|
|
while (!_connections.empty ()) {
|
|
std::set<AlsaPort*>::iterator it = _connections.begin ();
|
|
(*it)->_disconnect (this, false);
|
|
_alsa_backend.port_connect_callback (name(), (*it)->name(), false);
|
|
_connections.erase (it);
|
|
}
|
|
}
|
|
|
|
bool
|
|
AlsaPort::is_connected (const AlsaPort *port) const
|
|
{
|
|
return _connections.find (const_cast<AlsaPort *>(port)) != _connections.end ();
|
|
}
|
|
|
|
bool AlsaPort::is_physically_connected () const
|
|
{
|
|
for (std::set<AlsaPort*>::const_iterator it = _connections.begin (); it != _connections.end (); ++it) {
|
|
if ((*it)->is_physical ()) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
AlsaAudioPort::AlsaAudioPort (AlsaAudioBackend &b, const std::string& name, PortFlags flags)
|
|
: AlsaPort (b, name, flags)
|
|
{
|
|
memset (_buffer, 0, sizeof (_buffer));
|
|
mlock(_buffer, sizeof (_buffer));
|
|
}
|
|
|
|
AlsaAudioPort::~AlsaAudioPort () { }
|
|
|
|
void* AlsaAudioPort::get_buffer (pframes_t n_samples)
|
|
{
|
|
if (is_input ()) {
|
|
const std::set<AlsaPort *>& connections = get_connections ();
|
|
std::set<AlsaPort*>::const_iterator it = connections.begin ();
|
|
if (it == connections.end ()) {
|
|
memset (_buffer, 0, n_samples * sizeof (Sample));
|
|
} else {
|
|
AlsaAudioPort const * source = static_cast<const AlsaAudioPort*>(*it);
|
|
assert (source && source->is_output ());
|
|
memcpy (_buffer, source->const_buffer (), n_samples * sizeof (Sample));
|
|
while (++it != connections.end ()) {
|
|
source = static_cast<const AlsaAudioPort*>(*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;
|
|
}
|
|
|
|
|
|
AlsaMidiPort::AlsaMidiPort (AlsaAudioBackend &b, const std::string& name, PortFlags flags)
|
|
: AlsaPort (b, name, flags)
|
|
, _n_periods (1)
|
|
, _bufperiod (0)
|
|
{
|
|
_buffer[0].clear ();
|
|
_buffer[1].clear ();
|
|
_buffer[2].clear ();
|
|
|
|
_buffer[0].reserve(256);
|
|
_buffer[1].reserve(256);
|
|
_buffer[2].reserve(256);
|
|
}
|
|
|
|
AlsaMidiPort::~AlsaMidiPort () { }
|
|
|
|
struct MidiEventSorter {
|
|
bool operator() (AlsaMidiEvent const& a, AlsaMidiEvent const& b) {
|
|
return a < b;
|
|
}
|
|
};
|
|
|
|
void* AlsaMidiPort::get_buffer (pframes_t /* nframes */)
|
|
{
|
|
if (is_input ()) {
|
|
(_buffer[_bufperiod]).clear ();
|
|
const std::set<AlsaPort*>& connections = get_connections ();
|
|
for (std::set<AlsaPort*>::const_iterator i = connections.begin ();
|
|
i != connections.end ();
|
|
++i) {
|
|
const AlsaMidiBuffer * src = static_cast<const AlsaMidiPort*>(*i)->const_buffer ();
|
|
for (AlsaMidiBuffer::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]);
|
|
}
|
|
|
|
AlsaMidiEvent::AlsaMidiEvent (const pframes_t timestamp, const uint8_t* data, size_t size)
|
|
: _size (size)
|
|
, _timestamp (timestamp)
|
|
{
|
|
if (size > 0 && size < MaxAlsaMidiEventSize) {
|
|
memcpy (_data, data, size);
|
|
}
|
|
}
|
|
|
|
AlsaMidiEvent::AlsaMidiEvent (const AlsaMidiEvent& other)
|
|
: _size (other.size ())
|
|
, _timestamp (other.timestamp ())
|
|
{
|
|
if (other._size > 0) {
|
|
assert (other._size < MaxAlsaMidiEventSize);
|
|
memcpy (_data, other._data, other._size);
|
|
}
|
|
};
|