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/***
This file is part of PulseAudio.
Copyright 2005-2006 Lennart Poettering
PulseAudio 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 2.1 of the License,
or (at your option) any later version.
PulseAudio 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 Lesser General Public License
along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <lirc/lirc_client.h>
#include <pulse/xmalloc.h>
#include <pulsecore/module.h>
#include <pulsecore/log.h>
#include <pulsecore/namereg.h>
#include <pulsecore/sink.h>
#include <pulsecore/modargs.h>
#include <pulsecore/macro.h>
PA_MODULE_AUTHOR("Lennart Poettering");
PA_MODULE_DESCRIPTION("LIRC volume control");
PA_MODULE_VERSION(PACKAGE_VERSION);
PA_MODULE_LOAD_ONCE(true);
PA_MODULE_USAGE("config=<config file> sink=<sink name> appname=<lirc application name> volume_limit=<volume limit> volume_step=<volume change step>");
static const char* const valid_modargs[] = {
"config",
"sink",
"appname",
"volume_limit",
"volume_step",
NULL,
};
struct userdata {
int lirc_fd;
pa_io_event *io;
struct lirc_config *config;
char *sink_name;
pa_module *module;
float mute_toggle_save;
pa_volume_t volume_limit;
pa_volume_t volume_step;
};
static void io_callback(pa_mainloop_api *io, pa_io_event *e, int fd, pa_io_event_flags_t events, void*userdata) {
struct userdata *u = userdata;
char *name = NULL, *code = NULL;
pa_assert(io);
pa_assert(u);
if (events & (PA_IO_EVENT_HANGUP|PA_IO_EVENT_ERROR)) {
pa_log("Lost connection to LIRC daemon.");
goto fail;
}
if (events & PA_IO_EVENT_INPUT) {
char *c;
if (lirc_nextcode(&code) != 0 || !code) {
pa_log("lirc_nextcode() failed.");
goto fail;
}
c = pa_xstrdup(code);
c[strcspn(c, "\n\r")] = 0;
pa_log_debug("Raw IR code '%s'", c);
pa_xfree(c);
while (lirc_code2char(u->config, code, &name) == 0 && name) {
enum {
INVALID,
UP,
DOWN,
MUTE,
RESET,
MUTE_TOGGLE
} volchange = INVALID;
pa_log_info("Translated IR code '%s'", name);
if (strcasecmp(name, "volume-up") == 0)
volchange = UP;
else if (strcasecmp(name, "volume-down") == 0)
volchange = DOWN;
else if (strcasecmp(name, "mute") == 0)
volchange = MUTE;
else if (strcasecmp(name, "mute-toggle") == 0)
volchange = MUTE_TOGGLE;
else if (strcasecmp(name, "reset") == 0)
volchange = RESET;
if (volchange == INVALID)
pa_log_warn("Received unknown IR code '%s'", name);
else {
pa_sink *s;
if (!(s = pa_namereg_get(u->module->core, u->sink_name, PA_NAMEREG_SINK)))
pa_log("Failed to get sink '%s'", u->sink_name);
else {
pa_cvolume cv = *pa_sink_get_volume(s, false);
switch (volchange) {
case UP:
pa_cvolume_inc_clamp(&cv, u->volume_step, u->volume_limit);
pa_sink_set_volume(s, &cv, true, true);
break;
case DOWN:
pa_cvolume_dec(&cv, u->volume_step);
pa_sink_set_volume(s, &cv, true, true);
break;
case MUTE:
pa_sink_set_mute(s, true, true);
break;
case RESET:
pa_sink_set_mute(s, false, true);
break;
case MUTE_TOGGLE:
pa_sink_set_mute(s, !pa_sink_get_mute(s, false), true);
break;
case INVALID:
pa_assert_not_reached();
}
}
}
}
}
pa_xfree(code);
return;
fail:
u->module->core->mainloop->io_free(u->io);
u->io = NULL;
pa_module_unload_request(u->module, true);
pa_xfree(code);
}
int pa__init(pa_module*m) {
pa_modargs *ma = NULL;
struct userdata *u;
pa_volume_t volume_limit = PA_CLAMP_VOLUME(PA_VOLUME_NORM*3/2);
pa_volume_t volume_step = PA_VOLUME_NORM/20;
pa_assert(m);
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
pa_log("Failed to parse module arguments");
goto fail;
}
if (pa_modargs_get_value_u32(ma, "volume_limit", &volume_limit) < 0) {
pa_log("Failed to parse volume limit");
goto fail;
}
if (pa_modargs_get_value_u32(ma, "volume_step", &volume_step) < 0) {
pa_log("Failed to parse volume step");
goto fail;
}
m->userdata = u = pa_xnew(struct userdata, 1);
u->module = m;
u->io = NULL;
u->config = NULL;
u->sink_name = pa_xstrdup(pa_modargs_get_value(ma, "sink", NULL));
u->lirc_fd = -1;
u->mute_toggle_save = 0;
u->volume_limit = PA_CLAMP_VOLUME(volume_limit);
u->volume_step = PA_CLAMP_VOLUME(volume_step);
if ((u->lirc_fd = lirc_init((char*) pa_modargs_get_value(ma, "appname", "pulseaudio"), 1)) < 0) {
pa_log("lirc_init() failed.");
goto fail;
}
if (lirc_readconfig((char*) pa_modargs_get_value(ma, "config", NULL), &u->config, NULL) < 0) {
pa_log("lirc_readconfig() failed.");
goto fail;
}
u->io = m->core->mainloop->io_new(m->core->mainloop, u->lirc_fd, PA_IO_EVENT_INPUT|PA_IO_EVENT_HANGUP, io_callback, u);
pa_modargs_free(ma);
return 0;
fail:
if (ma)
pa_modargs_free(ma);
pa__done(m);
return -1;
}
void pa__done(pa_module*m) {
struct userdata *u;
pa_assert(m);
if (!(u = m->userdata))
return;
if (u->io)
m->core->mainloop->io_free(u->io);
if (u->config)
lirc_freeconfig(u->config);
if (u->lirc_fd >= 0)
lirc_deinit();
pa_xfree(u->sink_name);
pa_xfree(u);
}
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