4 This file is part of polypaudio.
6 polypaudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2 of the License,
9 or (at your option) any later version.
11 polypaudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with polypaudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
34 #include <linux/input.h>
36 #include <polyp/xmalloc.h>
38 #include <polypcore/module.h>
39 #include <polypcore/log.h>
40 #include <polypcore/namereg.h>
41 #include <polypcore/sink.h>
42 #include <polypcore/modargs.h>
43 #include <polypcore/util.h>
45 #include "module-mmkbd-evdev-symdef.h"
47 PA_MODULE_AUTHOR("Lennart Poettering")
48 PA_MODULE_DESCRIPTION("Multimedia keyboard support via Linux evdev")
49 PA_MODULE_VERSION(PACKAGE_VERSION)
50 PA_MODULE_USAGE("device=<evdev device> sink=<sink name>")
52 #define DEFAULT_DEVICE "/dev/input/event0"
55 * This isn't defined in older kernel headers and there is no way of
65 static const char* const valid_modargs[] = {
78 static void io_callback(pa_mainloop_api *io, PA_GCC_UNUSED pa_io_event *e, PA_GCC_UNUSED int fd, pa_io_event_flags_t events, void*userdata) {
79 struct userdata *u = userdata;
83 if (events & (PA_IO_EVENT_HANGUP|PA_IO_EVENT_ERROR)) {
84 pa_log(__FILE__": lost connection to evdev device.");
88 if (events & PA_IO_EVENT_INPUT) {
89 struct input_event ev;
91 if (pa_loop_read(u->fd, &ev, sizeof(ev)) <= 0) {
92 pa_log(__FILE__": failed to read from event device: %s", strerror(errno));
96 if (ev.type == EV_KEY && (ev.value == 1 || ev.value == 2)) {
97 enum { INVALID, UP, DOWN, MUTE_TOGGLE } volchange = INVALID;
99 pa_log_debug(__FILE__": key code=%u, value=%u", ev.code, ev.value);
102 case KEY_VOLUMEDOWN: volchange = DOWN; break;
103 case KEY_VOLUMEUP: volchange = UP; break;
104 case KEY_MUTE: volchange = MUTE_TOGGLE; break;
107 if (volchange != INVALID) {
110 if (!(s = pa_namereg_get(u->module->core, u->sink_name, PA_NAMEREG_SINK, 1)))
111 pa_log(__FILE__": failed to get sink '%s'", u->sink_name);
114 pa_cvolume cv = *pa_sink_get_volume(s, PA_MIXER_HARDWARE);
116 #define DELTA (PA_VOLUME_NORM/20)
120 for (i = 0; i < cv.channels; i++) {
121 cv.values[i] += DELTA;
123 if (cv.values[i] > PA_VOLUME_NORM)
124 cv.values[i] = PA_VOLUME_NORM;
127 pa_sink_set_volume(s, PA_MIXER_HARDWARE, &cv);
131 for (i = 0; i < cv.channels; i++) {
132 if (cv.values[i] >= DELTA)
133 cv.values[i] -= DELTA;
135 cv.values[i] = PA_VOLUME_MUTED;
138 pa_sink_set_volume(s, PA_MIXER_HARDWARE, &cv);
143 pa_sink_set_mute(s, PA_MIXER_HARDWARE, !pa_sink_get_mute(s, PA_MIXER_HARDWARE));
157 u->module->core->mainloop->io_free(u->io);
160 pa_module_unload_request(u->module);
163 #define test_bit(bit, array) (array[bit/8] & (1<<(bit%8)))
165 int pa__init(pa_core *c, pa_module*m) {
166 pa_modargs *ma = NULL;
169 struct _input_id input_id;
171 uint8_t evtype_bitmask[EV_MAX/8 + 1];
174 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
175 pa_log(__FILE__": Failed to parse module arguments");
179 m->userdata = u = pa_xmalloc(sizeof(struct userdata));
182 u->sink_name = pa_xstrdup(pa_modargs_get_value(ma, "sink", NULL));
185 if ((u->fd = open(pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), O_RDONLY)) < 0) {
186 pa_log(__FILE__": failed to open evdev device: %s", strerror(errno));
190 if (ioctl(u->fd, EVIOCGVERSION, &version) < 0) {
191 pa_log(__FILE__": EVIOCGVERSION failed: %s", strerror(errno));
195 pa_log_info(__FILE__": evdev driver version %i.%i.%i", version >> 16, (version >> 8) & 0xff, version & 0xff);
197 if(ioctl(u->fd, EVIOCGID, &input_id)) {
198 pa_log(__FILE__": EVIOCGID failed: %s", strerror(errno));
202 pa_log_info(__FILE__": evdev vendor 0x%04hx product 0x%04hx version 0x%04hx bustype %u",
203 input_id.vendor, input_id.product, input_id.version, input_id.bustype);
205 memset(name, 0, sizeof(name));
206 if(ioctl(u->fd, EVIOCGNAME(sizeof(name)), name) < 0) {
207 pa_log(__FILE__": EVIOCGNAME failed: %s", strerror(errno));
211 pa_log_info(__FILE__": evdev device name: %s", name);
213 memset(evtype_bitmask, 0, sizeof(evtype_bitmask));
214 if (ioctl(u->fd, EVIOCGBIT(0, EV_MAX), evtype_bitmask) < 0) {
215 pa_log(__FILE__": EVIOCGBIT failed: %s", strerror(errno));
219 if (!test_bit(EV_KEY, evtype_bitmask)) {
220 pa_log(__FILE__": device has no keys.");
224 u->io = c->mainloop->io_new(c->mainloop, u->fd, PA_IO_EVENT_INPUT|PA_IO_EVENT_HANGUP, io_callback, u);
239 void pa__done(pa_core *c, pa_module*m) {
244 if (!(u = m->userdata))
248 m->core->mainloop->io_free(u->io);
253 pa_xfree(u->sink_name);