/* snd_jack.c JACK output driver Copyright (C) 2007-2021 Bill Currie 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 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 with this program; if not, write to: Free Software Foundation, Inc. 59 Temple Place - Suite 330 Boston, MA 02111-1307, USA */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #ifdef HAVE_STRING_H # include #endif #ifdef HAVE_STRINGS_H # include #endif #include #include #include "QF/cmd.h" #include "QF/cvar.h" #include "QF/hash.h" #include "QF/plugin.h" #include "QF/sound.h" #include "QF/sys.h" #include "QF/va.h" #include "snd_internal.h" static int sound_started = 0; static int snd_blocked = 0; static int snd_shutdown = 0; static int snd_alive = 0; static double snd_alive_time = 0; static jack_client_t *jack_handle; static jack_port_t *jack_out[2]; static float *output[2]; static cvar_t *snd_jack_server; static int s_jack_connect (snd_t *snd); static void s_finish_channels (void) { int i; channel_t *ch; for (i = 0; i < MAX_CHANNELS; i++) { ch = &snd_channels[i]; ch->done = ch->stop = 1; } } static void s_update (snd_t *snd) { double now = Sys_DoubleTime (); if (!sound_started) return; if (snd_alive) { snd_alive = 0; snd_alive_time = now; } else { if (!snd_shutdown) { if (now - snd_alive_time > 1.0) { Sys_Printf ("jackd client thread seems to have died\n"); s_finish_channels (); snd_shutdown = 1; } } } if (snd_shutdown) { if (snd_shutdown == 1) { snd_shutdown++; Sys_Printf ("Lost connection to jackd\n"); s_jack_connect (snd); } if (snd_shutdown) return; } } static void s_jack_activate (void) { const char **ports; int i; if (jack_activate (jack_handle)) { Sys_Printf ("Could not activate JACK\n"); return; } snd_shutdown = 0; ports = jack_get_ports (jack_handle, 0, 0, JackPortIsPhysical | JackPortIsInput); if (developer->int_val & SYS_snd) { for (i = 0; ports[i]; i++) Sys_Printf ("%s\n", ports[i]); } for (i = 0; i < 2; i++) jack_connect (jack_handle, jack_port_name (jack_out[i]), ports[i]); free (ports); } static void s_block_sound (snd_t *t) { if (!sound_started) return; if (++snd_blocked == 1) { //Sys_Printf ("jack_deactivate: %d\n", jack_deactivate (jack_handle)); } } static void s_unblock_sound (snd_t *t) { if (!sound_started) return; if (!snd_blocked) return; if (!--snd_blocked) { //s_jack_activate (); //Sys_Printf ("jack_activate\n"); } } static void snd_jack_xfer (snd_t *snd, portable_samplepair_t *paintbuffer, int count, float volume) { int i; if (snd_blocked) { for (i = 0; i < count; i++) { *output[0]++ = 0; *output[1]++ = 0; } return; } for (i = 0; i < count; i++) { /* max is +/- 1.0. need to implement clamping. */ *output[0]++ = volume * snd_paintbuffer[i].left; *output[1]++ = volume * snd_paintbuffer[i].right; } } static int snd_jack_process (jack_nframes_t nframes, void *arg) { snd_t *snd = arg; int i; snd_alive = 1; for (i = 0; i < 2; i++) output[i] = (float *) jack_port_get_buffer (jack_out[i], nframes); SND_PaintChannels (snd, snd_paintedtime + nframes); return 0; } static void snd_jack_shutdown (void *arg) { snd_shutdown = 1; s_finish_channels (); } static void snd_jack_error (const char *desc) { fprintf (stderr, "snd_jack: %s\n", desc); } static int snd_jack_xrun (void *arg) { if (developer->int_val & SYS_snd) { fprintf (stderr, "snd_jack: xrun\n"); } return 0; } static int s_jack_connect (snd_t *snd) { int i; jack_set_error_function (snd_jack_error); if ((jack_handle = jack_client_open ("QuakeForge", JackServerName | JackNoStartServer, 0, snd_jack_server->string)) == 0) { Sys_Printf ("Could not connect to JACK\n"); return 0; } if (jack_set_xrun_callback (jack_handle, snd_jack_xrun, 0)) Sys_Printf ("Could not set xrun callback\n"); jack_set_process_callback (jack_handle, snd_jack_process, snd); jack_on_shutdown (jack_handle, snd_jack_shutdown, 0); for (i = 0; i < 2; i++) jack_out[i] = jack_port_register (jack_handle, va (0, "out_%d", i + 1), JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0); snd->speed = jack_get_sample_rate (jack_handle); s_jack_activate (); sound_started = 1; Sys_Printf ("Connected to JACK: %d Sps\n", snd->speed); return 1; } static int s_init (snd_t *snd) { snd->xfer = snd_jack_xfer; return s_jack_connect (snd); } static void s_shutdown (snd_t *snd) { int i; if (jack_handle) { jack_deactivate (jack_handle); if (!snd_shutdown) { for (i = 0; i < 2; i++) jack_port_unregister (jack_handle, jack_out[i]); } jack_client_close (jack_handle); } } static void s_init_cvars (void) { snd_jack_server = Cvar_Get ("snd_jack_server", "default", CVAR_ROM, NULL, "The name of the JACK server to connect to"); } static general_funcs_t plugin_info_general_funcs = { .init = s_init_cvars, }; static snd_output_funcs_t plugin_info_output_funcs = { .init = s_init, .shutdown = s_shutdown, .on_update = s_update, .block_sound = s_block_sound, .unblock_sound = s_unblock_sound, }; static snd_output_data_t plugin_info_output_data = { .model = som_pull, }; static general_data_t plugin_info_general_data; static plugin_funcs_t plugin_info_funcs = { .general = &plugin_info_general_funcs, .snd_output = &plugin_info_output_funcs, }; static plugin_data_t plugin_info_data = { .general = &plugin_info_general_data, .snd_output = &plugin_info_output_data, }; static plugin_t plugin_info = { qfp_snd_output, 0, QFPLUGIN_VERSION, "0.1", "Sound Renderer", "Copyright (C) 2007-2021 contributors of the QuakeForge " "project\n" "Please see the file \"AUTHORS\" for a list of contributors", &plugin_info_funcs, &plugin_info_data, }; PLUGIN_INFO(snd_output, jack) { return &plugin_info; }