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https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
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49101fc540
This ensures that we always clamp the volume to PA_VOLUME_MAX. While this currently has no effect, it will be required for making sure we don't exceed PA_VOLUME_MAX when its value changes in the future.
248 lines
6.7 KiB
C
248 lines
6.7 KiB
C
/***
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This file is part of PulseAudio.
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Copyright 2005-2006 Lennart Poettering
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <lirc/lirc_client.h>
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#include <pulse/xmalloc.h>
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#include <pulsecore/module.h>
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#include <pulsecore/log.h>
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#include <pulsecore/namereg.h>
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#include <pulsecore/sink.h>
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#include <pulsecore/modargs.h>
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#include <pulsecore/macro.h>
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#include "module-lirc-symdef.h"
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PA_MODULE_AUTHOR("Lennart Poettering");
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PA_MODULE_DESCRIPTION("LIRC volume control");
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PA_MODULE_VERSION(PACKAGE_VERSION);
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PA_MODULE_LOAD_ONCE(TRUE);
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PA_MODULE_USAGE("config=<config file> sink=<sink name> appname=<lirc application name> volume_limit=<volume limit> volume_step=<volume change step>");
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static const char* const valid_modargs[] = {
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"config",
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"sink",
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"appname",
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"volume_limit",
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"volume_step",
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NULL,
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};
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struct userdata {
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int lirc_fd;
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pa_io_event *io;
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struct lirc_config *config;
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char *sink_name;
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pa_module *module;
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float mute_toggle_save;
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pa_volume_t volume_limit;
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pa_volume_t volume_step;
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};
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static void io_callback(pa_mainloop_api *io, pa_io_event *e, int fd, pa_io_event_flags_t events, void*userdata) {
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struct userdata *u = userdata;
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char *name = NULL, *code = NULL;
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pa_assert(io);
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pa_assert(u);
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if (events & (PA_IO_EVENT_HANGUP|PA_IO_EVENT_ERROR)) {
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pa_log("Lost connection to LIRC daemon.");
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goto fail;
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}
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if (events & PA_IO_EVENT_INPUT) {
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char *c;
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if (lirc_nextcode(&code) != 0 || !code) {
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pa_log("lirc_nextcode() failed.");
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goto fail;
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}
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c = pa_xstrdup(code);
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c[strcspn(c, "\n\r")] = 0;
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pa_log_debug("Raw IR code '%s'", c);
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pa_xfree(c);
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while (lirc_code2char(u->config, code, &name) == 0 && name) {
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enum {
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INVALID,
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UP,
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DOWN,
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MUTE,
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RESET,
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MUTE_TOGGLE
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} volchange = INVALID;
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pa_log_info("Translated IR code '%s'", name);
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if (strcasecmp(name, "volume-up") == 0)
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volchange = UP;
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else if (strcasecmp(name, "volume-down") == 0)
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volchange = DOWN;
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else if (strcasecmp(name, "mute") == 0)
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volchange = MUTE;
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else if (strcasecmp(name, "mute-toggle") == 0)
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volchange = MUTE_TOGGLE;
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else if (strcasecmp(name, "reset") == 0)
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volchange = RESET;
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if (volchange == INVALID)
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pa_log_warn("Received unknown IR code '%s'", name);
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else {
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pa_sink *s;
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if (!(s = pa_namereg_get(u->module->core, u->sink_name, PA_NAMEREG_SINK)))
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pa_log("Failed to get sink '%s'", u->sink_name);
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else {
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pa_cvolume cv = *pa_sink_get_volume(s, FALSE);
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switch (volchange) {
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case UP:
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pa_cvolume_inc_clamp(&cv, u->volume_step, u->volume_limit);
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pa_sink_set_volume(s, &cv, TRUE, TRUE);
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break;
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case DOWN:
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pa_cvolume_dec(&cv, u->volume_step);
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pa_sink_set_volume(s, &cv, TRUE, TRUE);
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break;
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case MUTE:
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pa_sink_set_mute(s, TRUE, TRUE);
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break;
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case RESET:
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pa_sink_set_mute(s, FALSE, TRUE);
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break;
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case MUTE_TOGGLE:
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pa_sink_set_mute(s, !pa_sink_get_mute(s, FALSE), TRUE);
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break;
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case INVALID:
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pa_assert_not_reached();
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}
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}
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}
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}
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}
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pa_xfree(code);
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return;
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fail:
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u->module->core->mainloop->io_free(u->io);
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u->io = NULL;
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pa_module_unload_request(u->module, TRUE);
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pa_xfree(code);
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}
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int pa__init(pa_module*m) {
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pa_modargs *ma = NULL;
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struct userdata *u;
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pa_volume_t volume_limit = PA_CLAMP_VOLUME(PA_VOLUME_NORM*3/2);
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pa_volume_t volume_step = PA_VOLUME_NORM/20;
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pa_assert(m);
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if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
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pa_log("Failed to parse module arguments");
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goto fail;
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}
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if (pa_modargs_get_value_u32(ma, "volume_limit", &volume_limit) < 0) {
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pa_log("Failed to parse volume limit");
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goto fail;
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}
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if (pa_modargs_get_value_u32(ma, "volume_step", &volume_step) < 0) {
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pa_log("Failed to parse volume step");
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goto fail;
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}
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m->userdata = u = pa_xnew(struct userdata, 1);
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u->module = m;
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u->io = NULL;
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u->config = NULL;
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u->sink_name = pa_xstrdup(pa_modargs_get_value(ma, "sink", NULL));
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u->lirc_fd = -1;
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u->mute_toggle_save = 0;
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u->volume_limit = PA_CLAMP_VOLUME(volume_limit);
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u->volume_step = PA_CLAMP_VOLUME(volume_step);
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if ((u->lirc_fd = lirc_init((char*) pa_modargs_get_value(ma, "appname", "pulseaudio"), 1)) < 0) {
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pa_log("lirc_init() failed.");
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goto fail;
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}
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if (lirc_readconfig((char*) pa_modargs_get_value(ma, "config", NULL), &u->config, NULL) < 0) {
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pa_log("lirc_readconfig() failed.");
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goto fail;
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}
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u->io = m->core->mainloop->io_new(m->core->mainloop, u->lirc_fd, PA_IO_EVENT_INPUT|PA_IO_EVENT_HANGUP, io_callback, u);
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pa_modargs_free(ma);
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return 0;
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fail:
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if (ma)
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pa_modargs_free(ma);
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pa__done(m);
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return -1;
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}
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void pa__done(pa_module*m) {
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struct userdata *u;
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pa_assert(m);
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if (!(u = m->userdata))
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return;
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if (u->io)
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m->core->mainloop->io_free(u->io);
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if (u->config)
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lirc_freeconfig(u->config);
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if (u->lirc_fd >= 0)
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lirc_deinit();
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pa_xfree(u->sink_name);
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pa_xfree(u);
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}
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