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/*
* JACK audio output driver for MPlayer
*
* Copyleft 2001 by Felix Bünemann (atmosfear@users.sf.net)
* and Reimar Döffinger (Reimar.Doeffinger@stud.uni-karlsruhe.de)
*
* Copyleft 2013 by William Light <wrl@illest.net> for the mpv project
*
* This file is part of MPlayer.
*
* MPlayer 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.
*
* MPlayer 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* along with MPlayer; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "config.h"
#include "common/msg.h"
#include "ao.h"
#include "internal.h"
#include "audio/format.h"
#include "osdep/timer.h"
#include "options/m_option.h"
#include <jack/jack.h>
struct priv {
jack_client_t *client;
float jack_latency;
char *cfg_port;
char *cfg_client_name;
int connect;
int autostart;
int stdlayout;
int last_chunk;
int num_ports;
jack_port_t *ports[MP_NUM_CHANNELS];
};
static int process(jack_nframes_t nframes, void *arg)
{
struct ao *ao = arg;
struct priv *p = ao->priv;
void *buffers[MP_NUM_CHANNELS];
for (int i = 0; i < p->num_ports; i++)
buffers[i] = jack_port_get_buffer(p->ports[i], nframes);
int64_t end_time = mp_time_us();
end_time += (p->jack_latency + nframes / (double)ao->samplerate) * 1000000.0;
ao_read_data(ao, buffers, nframes, end_time);
return 0;
}
static int
connect_to_outports(struct ao *ao)
{
struct priv *p = ao->priv;
char *port_name = (p->cfg_port && p->cfg_port[0]) ? p->cfg_port : NULL;
const char **matching_ports = NULL;
int port_flags = JackPortIsInput;
int i;
if (!port_name)
port_flags |= JackPortIsPhysical;
matching_ports = jack_get_ports(p->client, port_name, NULL, port_flags);
if (!matching_ports || !matching_ports[0]) {
MP_FATAL(ao, "no ports to connect to\n");
goto err_get_ports;
}
for (i = 0; i < p->num_ports && matching_ports[i]; i++) {
if (jack_connect(p->client, jack_port_name(p->ports[i]),
matching_ports[i]))
{
MP_FATAL(ao, "connecting failed\n");
goto err_connect;
}
}
free(matching_ports);
return 0;
err_connect:
free(matching_ports);
err_get_ports:
return -1;
}
static int
create_ports(struct ao *ao, int nports)
{
struct priv *p = ao->priv;
char pname[30];
int i;
for (i = 0; i < nports; i++) {
snprintf(pname, sizeof(pname), "out_%d", i);
p->ports[i] = jack_port_register(p->client, pname, JACK_DEFAULT_AUDIO_TYPE,
JackPortIsOutput, 0);
if (!p->ports[i]) {
MP_FATAL(ao, "not enough ports available\n");
goto err_port_register;
}
}
p->num_ports = nports;
return 0;
err_port_register:
return -1;
}
static int init(struct ao *ao)
{
struct priv *p = ao->priv;
struct mp_chmap_sel sel = {0};
jack_options_t open_options;
ao->format = AF_FORMAT_FLOATP;
switch (p->stdlayout) {
case 0:
mp_chmap_sel_add_waveext(&sel);
break;
case 1:
mp_chmap_sel_add_alsa_def(&sel);
break;
default:
mp_chmap_sel_add_any(&sel);
}
if (!ao_chmap_sel_adjust(ao, &sel, &ao->channels))
goto err_chmap;
open_options = JackNullOption;
if (!p->autostart)
open_options |= JackNoStartServer;
p->client = jack_client_open(p->cfg_client_name, open_options, NULL);
if (!p->client) {
MP_FATAL(ao, "cannot open server\n");
goto err_client_open;
}
if (create_ports(ao, ao->channels.num))
goto err_create_ports;
jack_set_process_callback(p->client, process, ao);
if (jack_activate(p->client)) {
MP_FATAL(ao, "activate failed\n");
goto err_activate;
}
ao->samplerate = jack_get_sample_rate(p->client);
if (p->connect)
if (connect_to_outports(ao))
goto err_connect;
jack_latency_range_t jack_latency_range;
jack_port_get_latency_range(p->ports[0], JackPlaybackLatency,
&jack_latency_range);
p->jack_latency = (float)(jack_latency_range.max + jack_get_buffer_size(p->client))
/ (float)ao->samplerate;
if (!ao_chmap_sel_get_def(ao, &sel, &ao->channels, p->num_ports))
goto err_chmap_sel_get_def;
return 0;
err_chmap_sel_get_def:
err_connect:
jack_deactivate(p->client);
err_activate:
err_create_ports:
jack_client_close(p->client);
err_client_open:
err_chmap:
return -1;
}
// close audio device
static void uninit(struct ao *ao, bool immed)
{
struct priv *p = ao->priv;
if (!immed)
ao_wait_drain(ao);
jack_client_close(p->client);
}
#define OPT_BASE_STRUCT struct priv
const struct ao_driver audio_out_jack = {
.description = "JACK audio output",
.name = "jack",
.init = init,
.uninit = uninit,
.priv_size = sizeof(struct priv),
.priv_defaults = &(const struct priv) {
.cfg_client_name = "mpv",
.connect = 1,
},
.options = (const struct m_option[]) {
OPT_STRING("port", cfg_port, 0),
OPT_STRING("name", cfg_client_name, 0),
OPT_FLAG("autostart", autostart, 0),
OPT_FLAG("connect", connect, 0),
OPT_CHOICE("std-channel-layout", stdlayout, 0,
({"waveext", 0}, {"alsa", 1}, {"any", 2})),
{0}
},
};
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