summaryrefslogtreecommitdiff
path: root/drumgizmo/jackclient.cc
blob: 8bf0939e248a127866bacec150f457ff4d3ba2c2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
 *            jackclient.cc
 *
 *  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.
 */
#include <cassert>

#include "jackclient.h"

JackProcess::~JackProcess()
{
}

// --------------------------------------------------------------------

JackPort::JackPort(JackClient& client, const std::string& name,
                   const char* type, JackPortFlags flags)
	: client{client.client} // register jack port for given client
	, port{jack_port_register(this->client, name.c_str(), type, flags, 0)}
{
}

JackPort::~JackPort()
{
	if(port != nullptr)
	{
		assert(client != nullptr);
		jack_port_unregister(client, port);
	}
}

// --------------------------------------------------------------------

int JackClient::wrapJackProcess(jack_nframes_t nframes, void* arg)
{
	return static_cast<JackClient*>(arg)->process(nframes);
}

void JackClient::latencyCallback(jack_latency_callback_mode_t mode,
                                 void* arg)
{
	static_cast<JackClient*>(arg)->jackLatencyCallback(mode);
}

void JackClient::freewheelCallback(int is_freewheeling, void* arg)
{
	static_cast<JackClient*>(arg)->jackFreewheelCallback(is_freewheeling);
}

JackClient::JackClient()
	: client{nullptr}
	, processes{}
	, is_active{false}
{
	jack_status_t status;
	client = jack_client_open("DrumGizmo", JackNullOption, &status);

	// Register callbacks
	jack_set_process_callback(client, JackClient::wrapJackProcess, this);
	jack_set_latency_callback(client, JackClient::latencyCallback, this);
	jack_set_freewheel_callback(client, JackClient::freewheelCallback, this);
}

JackClient::~JackClient()
{
	if(client != nullptr)
	{
		jack_client_close(client);
	}
}

void JackClient::add(JackProcess& process)
{
	processes.insert(&process);
}

void JackClient::remove(JackProcess& process)
{
	processes.erase(&process);
}

void JackClient::activate()
{
	if(!is_active)
	{
		jack_activate(client);
	}
	is_active = true;
}

int JackClient::process(jack_nframes_t num_frames)
{
	for(auto& ptr : processes)
	{
		ptr->process(num_frames);
	}
	return 0;
}

void JackClient::jackLatencyCallback(jack_latency_callback_mode_t mode)
{
	for(auto& ptr : processes)
	{
		ptr->jackLatencyCallback(mode);
	}
}

void JackClient::jackFreewheelCallback(bool is_freewheeling)
{
	this->is_freewheeling = is_freewheeling;
}

std::size_t JackClient::getBufferSize() const
{
	return jack_get_buffer_size(client);
}

std::size_t JackClient::getSampleRate() const
{
	return jack_get_sample_rate(client);
}

bool JackClient::isFreewheeling() const
{
	return is_freewheeling;
}