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/***
This file is part of PulseAudio.
Copyright 2009 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 <stdlib.h>
#include <unistd.h>
#include <X11/Xlib.h>
#include <X11/extensions/XTest.h>
#include <X11/XF86keysym.h>
#include <X11/keysym.h>
#include <pulse/xmalloc.h>
#include <pulsecore/module.h>
#include <pulsecore/modargs.h>
#include <pulsecore/log.h>
#include <pulsecore/x11wrap.h>
#include <pulsecore/core-util.h>
PA_MODULE_AUTHOR("Lennart Poettering");
PA_MODULE_DESCRIPTION("Synthesize X11 media key events when cork/uncork is requested");
PA_MODULE_VERSION(PACKAGE_VERSION);
PA_MODULE_LOAD_ONCE(false);
PA_MODULE_USAGE("display=<X11 display>");
static const char* const valid_modargs[] = {
"display",
"xauthority",
NULL
};
struct userdata {
pa_module *module;
pa_x11_wrapper *x11_wrapper;
pa_x11_client *x11_client;
pa_hook_slot *hook_slot;
};
static void x11_kill_cb(pa_x11_wrapper *w, void *userdata) {
struct userdata *u = userdata;
pa_assert(w);
pa_assert(u);
pa_assert(u->x11_wrapper == w);
if (u->x11_client) {
pa_x11_client_free(u->x11_client);
u->x11_client = NULL;
}
if (u->x11_wrapper) {
pa_x11_wrapper_unref(u->x11_wrapper);
u->x11_wrapper = NULL;
}
pa_module_unload_request(u->module, true);
}
static pa_hook_result_t sink_input_send_event_hook_cb(
pa_core *c,
pa_sink_input_send_event_hook_data *data,
struct userdata *u) {
KeySym sym;
KeyCode code;
Display *display;
pa_assert(c);
pa_assert(data);
pa_assert(u);
if (pa_streq(data->event, PA_STREAM_EVENT_REQUEST_CORK))
sym = XF86XK_AudioPause;
else if (pa_streq(data->event, PA_STREAM_EVENT_REQUEST_UNCORK))
sym = XF86XK_AudioPlay;
else
return PA_HOOK_OK;
pa_log_debug("Triggering X11 keysym: %s", XKeysymToString(sym));
display = pa_x11_wrapper_get_display(u->x11_wrapper);
code = XKeysymToKeycode(display, sym);
XTestFakeKeyEvent(display, code, True, CurrentTime);
XSync(display, False);
XTestFakeKeyEvent(display, code, False, CurrentTime);
XSync(display, False);
return PA_HOOK_OK;
}
int pa__init(pa_module *m) {
struct userdata *u;
pa_modargs *ma;
int xtest_event_base, xtest_error_base;
int major_version, minor_version;
pa_assert(m);
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
pa_log("failed to parse module arguments");
goto fail;
}
m->userdata = u = pa_xnew0(struct userdata, 1);
u->module = m;
if (pa_modargs_get_value(ma, "xauthority", NULL)) {
if (setenv("XAUTHORITY", pa_modargs_get_value(ma, "xauthority", NULL), 1)) {
pa_log("setenv() for $XAUTHORITY failed");
goto fail;
}
}
if (!(u->x11_wrapper = pa_x11_wrapper_get(m->core, pa_modargs_get_value(ma, "display", NULL))))
goto fail;
if (!XTestQueryExtension(
pa_x11_wrapper_get_display(u->x11_wrapper),
&xtest_event_base, &xtest_error_base,
&major_version, &minor_version)) {
pa_log("XTest extension not supported.");
goto fail;
}
pa_log_debug("XTest %i.%i supported.", major_version, minor_version);
u->x11_client = pa_x11_client_new(u->x11_wrapper, NULL, x11_kill_cb, u);
u->hook_slot = pa_hook_connect(
&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_SEND_EVENT],
PA_HOOK_NORMAL,
(pa_hook_cb_t) sink_input_send_event_hook_cb, 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->x11_client)
pa_x11_client_free(u->x11_client);
if (u->x11_wrapper)
pa_x11_wrapper_unref(u->x11_wrapper);
if (u->hook_slot)
pa_hook_slot_free(u->hook_slot);
pa_xfree(u);
}
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