--- /dev/null
+/* $Id$ */
+
+/***
+ This file is part of polypaudio.
+
+ polypaudio 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 of the License,
+ or (at your option) any later version.
+
+ polypaudio 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 polypaudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <assert.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#include <linux/input.h>
+
+#include "module.h"
+#include "log.h"
+#include "module-mmkbd-evdev-symdef.h"
+#include "namereg.h"
+#include "sink.h"
+#include "xmalloc.h"
+#include "modargs.h"
+#include "util.h"
+
+PA_MODULE_AUTHOR("Lennart Poettering")
+PA_MODULE_DESCRIPTION("Multimedia keyboard support via Linux evdev")
+PA_MODULE_VERSION(PACKAGE_VERSION)
+PA_MODULE_USAGE("device=<evdev device> sink=<sink name>")
+
+#define DEFAULT_DEVICE "/dev/input/event0"
+
+static const char* const valid_modargs[] = {
+ "device",
+ "sink",
+ NULL,
+};
+
+struct userdata {
+ int fd;
+ struct pa_io_event *io;
+ char *sink_name;
+ struct pa_module *module;
+ float mute_toggle_save;
+};
+
+static void io_callback(struct pa_mainloop_api *io, struct pa_io_event *e, int fd, enum pa_io_event_flags events, void*userdata) {
+ struct userdata *u = userdata;
+ assert(io);
+ assert(u);
+
+ if (events & (PA_IO_EVENT_HANGUP|PA_IO_EVENT_ERROR)) {
+ pa_log(__FILE__": lost connection to evdev device.\n");
+ goto fail;
+ }
+
+ if (events & PA_IO_EVENT_INPUT) {
+ struct input_event e;
+
+ if (pa_loop_read(u->fd, &e, sizeof(e)) <= 0) {
+ pa_log(__FILE__": failed to read from event device: %s\n", strerror(errno));
+ goto fail;
+ }
+
+ if (e.type == EV_KEY && (e.value == 1 || e.value == 2)) {
+ enum { INVALID, UP, DOWN, MUTE_TOGGLE } volchange = INVALID;
+
+ pa_log_debug(__FILE__": key code=%u, value=%u\n", e.code, e.value);
+
+ switch (e.code) {
+ case KEY_VOLUMEDOWN: volchange = DOWN; break;
+ case KEY_VOLUMEUP: volchange = UP; break;
+ case KEY_MUTE: volchange = MUTE_TOGGLE; break;
+ }
+
+ if (volchange != INVALID) {
+ struct pa_sink *s;
+
+ if (!(s = pa_namereg_get(u->module->core, u->sink_name, PA_NAMEREG_SINK, 1)))
+ pa_log(__FILE__": failed to get sink '%s'\n", u->sink_name);
+ else {
+ double v = pa_volume_to_user(s->volume);
+
+ switch (volchange) {
+ case UP: v += .05; break;
+ case DOWN: v -= .05; break;
+ case MUTE_TOGGLE: {
+
+ if (v > 0) {
+ u->mute_toggle_save = v;
+ v = 0;
+ } else
+ v = u->mute_toggle_save;
+ }
+ default:
+ ;
+ }
+
+ pa_sink_set_volume(s, pa_volume_from_user(v));
+ }
+ }
+ }
+ }
+
+ return;
+
+fail:
+ u->module->core->mainloop->io_free(u->io);
+ u->io = NULL;
+
+ pa_module_unload_request(u->module);
+}
+
+#define test_bit(bit, array) (array[bit/8] & (1<<(bit%8)))
+
+int pa__init(struct pa_core *c, struct pa_module*m) {
+ struct pa_modargs *ma = NULL;
+ struct userdata *u;
+ int version;
+ struct input_id input_id;
+ char name[256];
+ uint8_t evtype_bitmask[EV_MAX/8 + 1];
+ assert(c && m);
+
+ if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
+ pa_log(__FILE__": Failed to parse module arguments\n");
+ goto fail;
+ }
+
+ m->userdata = u = pa_xmalloc(sizeof(struct userdata));
+ u->module = m;
+ u->io = NULL;
+ u->sink_name = pa_xstrdup(pa_modargs_get_value(ma, "sink", NULL));
+ u->fd = -1;
+ u->mute_toggle_save = 0;
+
+ if ((u->fd = open(pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), O_RDONLY)) < 0) {
+ pa_log(__FILE__": failed to open evdev device: %s\n", strerror(errno));
+ goto fail;
+ }
+
+ if (ioctl(u->fd, EVIOCGVERSION, &version) < 0) {
+ pa_log(__FILE__": EVIOCGVERSION failed: %s\n", strerror(errno));
+ goto fail;
+ }
+
+ pa_log_info(__FILE__": evdev driver version %i.%i.%i\n", version >> 16, (version >> 8) & 0xff, version & 0xff);
+
+ if(ioctl(u->fd, EVIOCGID, &input_id)) {
+ pa_log(__FILE__": EVIOCGID failed: %s\n", strerror(errno));
+ goto fail;
+ }
+
+ pa_log_info(__FILE__": evdev vendor 0x%04hx product 0x%04hx version 0x%04hx bustype %u\n",
+ input_id.vendor, input_id.product, input_id.version, input_id.bustype);
+
+ if(ioctl(u->fd, EVIOCGNAME(sizeof(name)), name) < 0) {
+ pa_log(__FILE__": EVIOCGNAME failed: %s\n", strerror(errno));
+ goto fail;
+ }
+
+ pa_log_info(__FILE__": evdev device name: %s\n", name);
+
+ memset(evtype_bitmask, 0, sizeof(evtype_bitmask));
+ if (ioctl(u->fd, EVIOCGBIT(0, EV_MAX), evtype_bitmask) < 0) {
+ pa_log(__FILE__": EVIOCGBIT failed: %s\n", strerror(errno));
+ goto fail;
+ }
+
+ if (!test_bit(EV_KEY, evtype_bitmask)) {
+ pa_log(__FILE__": device has no keys.\n");
+ goto fail;
+ }
+
+ u->io = c->mainloop->io_new(c->mainloop, u->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(c, m);
+ return -1;
+}
+
+void pa__done(struct pa_core *c, struct pa_module*m) {
+ struct userdata *u;
+ assert(c);
+ assert(m);
+
+ if (!(u = m->userdata))
+ return;
+
+ if (u->io)
+ m->core->mainloop->io_free(u->io);
+
+ if (u->fd >= 0)
+ close(u->fd);
+
+ pa_xfree(u->sink_name);
+ pa_xfree(u);
+}