quakeforge/libs/audio/renderer/snd_jack.c

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/*
snd_jack.c
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JACK version of the renderer
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Copyright (C) 2007 Bill Currie <bill@taniwha.org>
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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
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*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <stdlib.h>
#include <jack/jack.h>
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#include "QF/cmd.h"
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#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"
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static int sound_started = 0;
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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 dma_t _snd_shm;
static float *output[2];
static cvar_t *snd_jack_server;
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static void s_jack_connect (void);
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static void
s_stop_all_sounds (void)
{
if (!sound_started)
return;
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SND_StopAllSounds ();
SND_ScanChannels (1);
}
static void
s_start_sound (int entnum, int entchannel, sfx_t *sfx, const vec3_t origin,
float fvol, float attenuation)
{
if (!sound_started)
return;
if (!snd_shutdown)
SND_StartSound (entnum, entchannel, sfx, origin, fvol, attenuation);
}
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 (const vec3_t origin, const vec3_t forward, const vec3_t right,
const vec3_t up, const byte *ambient_sound_level)
{
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 ();
}
if (snd_shutdown)
return;
}
SND_SetListener (origin, forward, right, up, ambient_sound_level);
}
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static void
s_extra_update (void)
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{
}
static void
s_local_sound (const char *sound)
{
if (!sound_started)
return;
if (!snd_shutdown)
SND_LocalSound (sound);
}
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);
}
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static void
s_block_sound (void)
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{
if (!sound_started)
return;
if (++snd_blocked == 1) {
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//Sys_Printf ("jack_deactivate: %d\n", jack_deactivate (jack_handle));
}
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}
static void
s_unblock_sound (void)
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{
if (!sound_started)
return;
if (!snd_blocked)
return;
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if (!--snd_blocked) {
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//s_jack_activate ();
//Sys_Printf ("jack_activate\n");
}
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}
static channel_t *
s_alloc_channel (void)
{
if (!sound_started)
return 0;
if (!snd_shutdown)
return SND_AllocChannel ();
return 0;
}
static void
s_snd_force_unblock (void)
{
if (!sound_started)
return;
snd_blocked = 1;
s_unblock_sound ();
}
static void
s_ambient_off (void)
{
if (!sound_started)
return;
SND_AmbientOff ();
}
static void
s_ambient_on (void)
{
if (!sound_started)
return;
SND_AmbientOn ();
}
static void
s_static_sound (sfx_t *sfx, const vec3_t origin, float vol,
float attenuation)
{
if (!sound_started)
return;
SND_StaticSound (sfx, origin, vol, attenuation);
}
static void
s_stop_sound (int entnum, int entchannel)
{
if (!sound_started)
return;
SND_StopSound (entnum, entchannel);
}
static sfx_t *
s_precache_sound (const char *name)
{
if (!sound_started)
return 0;
return SND_PrecacheSound (name);
}
static sfx_t *
s_load_sound (const char *name)
{
if (!sound_started)
return 0;
return SND_LoadSound (name);
}
static void
s_channel_stop (channel_t *chan)
{
if (!sound_started)
return;
SND_ChannelStop (chan);
}
static void
snd_jack_xfer (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)
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{
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_paintedtime + nframes);
return 0;
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}
static void
snd_jack_shutdown (void *arg)
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{
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)
{
fprintf (stderr, "snd_jack: xrun\n");
return 0;
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}
static void
s_jack_connect (void)
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{
int i;
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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;
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}
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, 0);
jack_on_shutdown (jack_handle, snd_jack_shutdown, 0);
for (i = 0; i < 2; i++)
jack_out[i] = jack_port_register (jack_handle, va ("out_%d", i + 1),
JACK_DEFAULT_AUDIO_TYPE,
JackPortIsOutput, 0);
snd_shm->speed = jack_get_sample_rate (jack_handle);
s_jack_activate ();
sound_started = 1;
Sys_Printf ("Connected to JACK: %d Sps\n", snd_shm->speed);
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}
static void
s_init (void)
{
snd_shm = &_snd_shm;
snd_shm->xfer = snd_jack_xfer;
Cmd_AddCommand ("snd_force_unblock", s_snd_force_unblock,
"fix permanently blocked sound");
snd_volume = Cvar_Get ("volume", "0.7", CVAR_ARCHIVE, NULL,
"Set the volume for sound playback");
snd_jack_server = Cvar_Get ("snd_jack_server", "default", CVAR_ROM, NULL,
"The name of the JACK server to connect to");
SND_SFX_Init ();
SND_Channels_Init ();
s_jack_connect ();
}
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static void
s_shutdown (void)
{
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);
}
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}
static general_funcs_t plugin_info_general_funcs = {
s_init,
s_shutdown,
};
static snd_render_funcs_t plugin_info_render_funcs = {
s_ambient_off,
s_ambient_on,
s_static_sound,
s_start_sound,
s_stop_sound,
s_precache_sound,
s_update,
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s_stop_all_sounds,
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s_extra_update,
s_local_sound,
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s_block_sound,
s_unblock_sound,
s_load_sound,
s_alloc_channel,
s_channel_stop,
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};
static general_data_t plugin_info_general_data;
static plugin_funcs_t plugin_info_funcs = {
&plugin_info_general_funcs,
0,
0,
0,
0,
&plugin_info_render_funcs,
};
static plugin_data_t plugin_info_data = {
&plugin_info_general_data,
0,
0,
0,
0,
&snd_render_data,
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};
static plugin_t plugin_info = {
qfp_snd_render,
0,
QFPLUGIN_VERSION,
"0.1",
"Sound Renderer",
"Copyright (C) 2007 contributors of the QuakeForge "
"project\n"
"Please see the file \"AUTHORS\" for a list of contributors",
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&plugin_info_funcs,
&plugin_info_data,
};
PLUGIN_INFO(snd_render, jack)
{
return &plugin_info;
}