mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-05 13:29:57 -05:00
5effc83479
FSF addresses used in PA sources are no longer valid and rpmlint generates numerous warnings during packaging because of this. This patch changes all FSF addresses to FSF web page according to the GPL how-to: https://www.gnu.org/licenses/gpl-howto.en.html Done automatically by sed-ing through sources.
265 lines
7.2 KiB
C
265 lines
7.2 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, see <http://www.gnu.org/licenses/>.
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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 <errno.h>
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#include <fcntl.h>
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#include <linux/input.h>
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#include <pulse/xmalloc.h>
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#include <pulsecore/core-error.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/core-util.h>
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#include "module-mmkbd-evdev-symdef.h"
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PA_MODULE_AUTHOR("Lennart Poettering");
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PA_MODULE_DESCRIPTION("Multimedia keyboard support via Linux evdev");
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PA_MODULE_VERSION(PACKAGE_VERSION);
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PA_MODULE_LOAD_ONCE(false);
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PA_MODULE_USAGE("device=<evdev device> sink=<sink name> volume_limit=<volume limit> volume_step=<volume change step>");
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#define DEFAULT_DEVICE "/dev/input/event0"
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static const char* const valid_modargs[] = {
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"device",
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"sink",
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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 fd, fd_type;
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pa_io_event *io;
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char *sink_name;
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pa_module *module;
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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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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 evdev device.");
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goto fail;
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}
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if (events & PA_IO_EVENT_INPUT) {
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struct input_event ev;
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if (pa_loop_read(u->fd, &ev, sizeof(ev), &u->fd_type) <= 0) {
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pa_log("Failed to read from event device: %s", pa_cstrerror(errno));
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goto fail;
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}
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if (ev.type == EV_KEY && (ev.value == 1 || ev.value == 2)) {
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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_TOGGLE
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} volchange = INVALID;
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pa_log_debug("Key code=%u, value=%u", ev.code, ev.value);
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switch (ev.code) {
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case KEY_VOLUMEDOWN:
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volchange = DOWN;
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break;
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case KEY_VOLUMEUP:
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volchange = UP;
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break;
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case KEY_MUTE:
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volchange = MUTE_TOGGLE;
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break;
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}
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if (volchange != INVALID) {
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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_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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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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}
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#define test_bit(bit, array) (array[bit/8] & (1<<(bit%8)))
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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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int version;
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struct input_id input_id;
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char name[256];
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uint8_t evtype_bitmask[EV_MAX/8 + 1];
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pa_volume_t volume_limit = 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->sink_name = pa_xstrdup(pa_modargs_get_value(ma, "sink", NULL));
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u->fd = -1;
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u->fd_type = 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->fd = pa_open_cloexec(pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), O_RDONLY, 0)) < 0) {
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pa_log("Failed to open evdev device: %s", pa_cstrerror(errno));
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goto fail;
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}
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if (ioctl(u->fd, EVIOCGVERSION, &version) < 0) {
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pa_log("EVIOCGVERSION failed: %s", pa_cstrerror(errno));
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goto fail;
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}
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pa_log_info("evdev driver version %i.%i.%i", version >> 16, (version >> 8) & 0xff, version & 0xff);
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if (ioctl(u->fd, EVIOCGID, &input_id)) {
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pa_log("EVIOCGID failed: %s", pa_cstrerror(errno));
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goto fail;
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}
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pa_log_info("evdev vendor 0x%04hx product 0x%04hx version 0x%04hx bustype %u",
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input_id.vendor, input_id.product, input_id.version, input_id.bustype);
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memset(name, 0, sizeof(name));
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if (ioctl(u->fd, EVIOCGNAME(sizeof(name)), name) < 0) {
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pa_log("EVIOCGNAME failed: %s", pa_cstrerror(errno));
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goto fail;
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}
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pa_log_info("evdev device name: %s", name);
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memset(evtype_bitmask, 0, sizeof(evtype_bitmask));
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if (ioctl(u->fd, EVIOCGBIT(0, EV_MAX), evtype_bitmask) < 0) {
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pa_log("EVIOCGBIT failed: %s", pa_cstrerror(errno));
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goto fail;
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}
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if (!test_bit(EV_KEY, evtype_bitmask)) {
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pa_log("Device has no keys.");
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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->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->fd >= 0) {
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int r = pa_close(u->fd);
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if (r < 0) /* https://bugs.freedesktop.org/show_bug.cgi?id=80867 */
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pa_log("Closing fd failed: %s", pa_cstrerror(errno));
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}
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pa_xfree(u->sink_name);
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pa_xfree(u);
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}
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