mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 16:33:02 +00:00
a7f51f8fd4
Same deal as with previous commit. "waveext" is less arbitrary and at least supports 3/7 channels.
239 lines
5.8 KiB
C
239 lines
5.8 KiB
C
/*
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* JACK audio output driver for MPlayer
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*
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* Copyleft 2001 by Felix Bünemann (atmosfear@users.sf.net)
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* and Reimar Döffinger (Reimar.Doeffinger@stud.uni-karlsruhe.de)
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*
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* Copyleft 2013 by William Light <wrl@illest.net> for the mpv project
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*
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* This file is part of mpv.
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*
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* mpv 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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* mpv 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 along
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* with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "config.h"
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#include "common/msg.h"
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#include "ao.h"
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#include "internal.h"
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#include "audio/format.h"
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#include "osdep/timer.h"
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#include "options/m_option.h"
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#include <jack/jack.h>
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struct priv {
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jack_client_t *client;
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float jack_latency;
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char *cfg_port;
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char *cfg_client_name;
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int connect;
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int autostart;
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int stdlayout;
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int last_chunk;
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int num_ports;
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jack_port_t *ports[MP_NUM_CHANNELS];
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int activated;
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};
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static int process(jack_nframes_t nframes, void *arg)
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{
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struct ao *ao = arg;
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struct priv *p = ao->priv;
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void *buffers[MP_NUM_CHANNELS];
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for (int i = 0; i < p->num_ports; i++)
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buffers[i] = jack_port_get_buffer(p->ports[i], nframes);
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int64_t end_time = mp_time_us();
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end_time += (p->jack_latency + nframes / (double)ao->samplerate) * 1000000.0;
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ao_read_data(ao, buffers, nframes, end_time);
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return 0;
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}
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static int
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connect_to_outports(struct ao *ao)
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{
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struct priv *p = ao->priv;
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char *port_name = (p->cfg_port && p->cfg_port[0]) ? p->cfg_port : NULL;
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const char **matching_ports = NULL;
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int port_flags = JackPortIsInput;
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int i;
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if (!port_name)
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port_flags |= JackPortIsPhysical;
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matching_ports = jack_get_ports(p->client, port_name, NULL, port_flags);
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if (!matching_ports || !matching_ports[0]) {
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MP_FATAL(ao, "no ports to connect to\n");
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goto err_get_ports;
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}
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for (i = 0; i < p->num_ports && matching_ports[i]; i++) {
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if (jack_connect(p->client, jack_port_name(p->ports[i]),
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matching_ports[i]))
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{
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MP_FATAL(ao, "connecting failed\n");
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goto err_connect;
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}
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}
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free(matching_ports);
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return 0;
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err_connect:
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free(matching_ports);
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err_get_ports:
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return -1;
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}
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static int
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create_ports(struct ao *ao, int nports)
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{
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struct priv *p = ao->priv;
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char pname[30];
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int i;
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for (i = 0; i < nports; i++) {
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snprintf(pname, sizeof(pname), "out_%d", i);
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p->ports[i] = jack_port_register(p->client, pname, JACK_DEFAULT_AUDIO_TYPE,
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JackPortIsOutput, 0);
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if (!p->ports[i]) {
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MP_FATAL(ao, "not enough ports available\n");
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goto err_port_register;
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}
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}
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p->num_ports = nports;
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return 0;
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err_port_register:
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return -1;
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}
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static void resume(struct ao *ao)
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{
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struct priv *p = ao->priv;
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if (!p->activated) {
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p->activated = true;
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if (jack_activate(p->client))
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MP_FATAL(ao, "activate failed\n");
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if (p->connect)
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connect_to_outports(ao);
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}
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}
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static int init(struct ao *ao)
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{
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struct priv *p = ao->priv;
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struct mp_chmap_sel sel = {0};
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jack_options_t open_options;
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ao->format = AF_FORMAT_FLOATP;
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switch (p->stdlayout) {
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case 0:
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mp_chmap_sel_add_waveext(&sel);
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break;
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default:
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mp_chmap_sel_add_any(&sel);
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}
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if (!ao_chmap_sel_adjust(ao, &sel, &ao->channels))
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goto err_chmap;
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open_options = JackNullOption;
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if (!p->autostart)
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open_options |= JackNoStartServer;
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p->client = jack_client_open(p->cfg_client_name, open_options, NULL);
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if (!p->client) {
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MP_FATAL(ao, "cannot open server\n");
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goto err_client_open;
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}
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if (create_ports(ao, ao->channels.num))
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goto err_create_ports;
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jack_set_process_callback(p->client, process, ao);
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ao->samplerate = jack_get_sample_rate(p->client);
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jack_latency_range_t jack_latency_range;
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jack_port_get_latency_range(p->ports[0], JackPlaybackLatency,
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&jack_latency_range);
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p->jack_latency = (float)(jack_latency_range.max + jack_get_buffer_size(p->client))
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/ (float)ao->samplerate;
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if (!ao_chmap_sel_get_def(ao, &sel, &ao->channels, p->num_ports))
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goto err_chmap_sel_get_def;
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return 0;
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err_chmap_sel_get_def:
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err_create_ports:
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jack_client_close(p->client);
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err_client_open:
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err_chmap:
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return -1;
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}
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// close audio device
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static void uninit(struct ao *ao)
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{
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struct priv *p = ao->priv;
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jack_client_close(p->client);
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}
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#define OPT_BASE_STRUCT struct priv
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const struct ao_driver audio_out_jack = {
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.description = "JACK audio output",
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.name = "jack",
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.init = init,
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.uninit = uninit,
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.resume = resume,
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.priv_size = sizeof(struct priv),
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.priv_defaults = &(const struct priv) {
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.cfg_client_name = "mpv",
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.connect = 1,
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},
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.options = (const struct m_option[]) {
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OPT_STRING("port", cfg_port, 0),
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OPT_STRING("name", cfg_client_name, 0),
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OPT_FLAG("autostart", autostart, 0),
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OPT_FLAG("connect", connect, 0),
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OPT_CHOICE("std-channel-layout", stdlayout, 0,
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({"waveext", 0}, {"any", 1})),
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{0}
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},
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};
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