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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* jackclient.h
*
* Sun Jul 20 21:48:44 CEST 2008
* Copyright 2008 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* DrumGizmo is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#pragma once
#include <vector>
#include <string>
#include <set>
#include <jack/jack.h>
#include <audiotypes.h>
class JackClient;
class JackProcess
{
public:
virtual ~JackProcess();
virtual void process(jack_nframes_t num_frames) = 0;
virtual void jackLatencyCallback(jack_latency_callback_mode_t mode) {}
};
// --------------------------------------------------------------------
// RAII-wrapper for jack_port_t
struct JackPort
{
JackPort(JackClient& client, const std::string& name, const char* type,
JackPortFlags flags);
~JackPort();
jack_client_t* const client;
jack_port_t* const port;
};
// --------------------------------------------------------------------
class JackClient
{
friend struct JackPort;
public:
JackClient();
~JackClient();
void add(JackProcess& process);
void remove(JackProcess& process);
void activate();
std::size_t getBufferSize() const;
std::size_t getSampleRate() const;
bool isFreewheeling() const;
private:
jack_client_t* client;
std::set<JackProcess*> processes;
bool is_active;
bool is_freewheeling;
int process(jack_nframes_t num_frames);
void jackLatencyCallback(jack_latency_callback_mode_t mode);
void jackFreewheelCallback(bool is_freewheeling);
static int wrapJackProcess(jack_nframes_t nframes, void* arg);
static void latencyCallback(jack_latency_callback_mode_t mode, void* arg);
static void freewheelCallback(int is_freewheeling, void* arg);
};
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