diff options
Diffstat (limited to 'src/modules/module-lirc.c')
| -rw-r--r-- | src/modules/module-lirc.c | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/src/modules/module-lirc.c b/src/modules/module-lirc.c new file mode 100644 index 0000000..be3e67d --- /dev/null +++ b/src/modules/module-lirc.c @@ -0,0 +1,244 @@ +/*** + 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); +} |