An open source DAW for GNU/Linux, inspired by modular synths.
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// -*- mode: c++ -*-
* @begin:license
* Copyright (c) 2015-2019, Benjamin Niemann <>
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
* @end:license
#include <string>
#include "noisicaa/core/logging.h"
#include "noisicaa/core/status.h"
#include "noisicaa/audioproc/engine/buffers.h"
namespace noisicaa {
using namespace std;
class BlockContext;
class Realm;
class HostSystem;
struct BackendSettings {
string datastream_address;
float time_scale;
class Backend {
virtual ~Backend();
static StatusOr<Backend*> create(
HostSystem* host_system, const string& name, const BackendSettings& settings);
virtual Status setup(Realm* realm);
virtual void cleanup();
virtual Status begin_block(BlockContext* ctxt) = 0;
virtual Status end_block(BlockContext* ctxt) = 0;
virtual Status output(BlockContext* ctxt, const string& channel, BufferPtr samples) = 0;
Backend(HostSystem* host_system, const char* logger_name, const BackendSettings& settings);
HostSystem* _host_system;
Logger* _logger;
BackendSettings _settings;
Realm* _realm = nullptr;
} // namespace noisicaa