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#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <X11/Xlib.h>
#include <X11/XKBlib.h>
#include "module.h"
#include "sink.h"
#include "scache.h"
#include "modargs.h"
struct x11_source {
void *io_source;
struct x11_source *next;
};
struct userdata {
struct pa_core *core;
Display *display;
struct x11_source *x11_sources;
int xkb_event_base;
int sink_index;
char *scache_item;
};
static const char* const valid_modargs[] = {
"sink",
"sample",
"display",
NULL
};
static struct pa_sink* get_output_sink(struct userdata *u) {
struct pa_sink *s;
assert(u);
if (!(s = pa_idxset_get_by_index(u->core->sinks, u->sink_index)))
s = pa_sink_get_default(u->core);
u->sink_index = s ? s->index : PA_IDXSET_INVALID;
return s;
}
static int ring_bell(struct userdata *u, int percent) {
struct pa_sink *s;
assert(u);
if (!(s = get_output_sink(u))) {
fprintf(stderr, __FILE__": Invalid sink\n");
return -1;
}
if (pa_scache_play_item(u->core, u->scache_item, s, percent*2) < 0) {
fprintf(stderr, __FILE__": Failed to play sample\n");
return -1;
}
return 0;
}
static void io_callback(struct pa_mainloop_api*a, void *id, int fd, enum pa_mainloop_api_io_events events, void *userdata) {
struct userdata *u = userdata;
assert(u);
while (XPending(u->display)) {
XEvent e;
XkbBellNotifyEvent *bne;
XNextEvent(u->display, &e);
if (((XkbEvent*) &e)->any.xkb_type != XkbBellNotify)
continue;
bne = ((XkbBellNotifyEvent*) &e);
if (ring_bell(u, bne->percent) < 0) {
fprintf(stderr, __FILE__": Ringing bell failed, reverting to X11 device bell.\n");
XkbForceDeviceBell(u->display, bne->device, bne->bell_class, bne->bell_id, bne->percent);
}
}
}
static void new_io_source(struct userdata *u, int fd) {
struct x11_source *s;
s = malloc(sizeof(struct x11_source));
assert(s);
s->io_source = u->core->mainloop->source_io(u->core->mainloop, fd, PA_MAINLOOP_API_IO_EVENT_INPUT, io_callback, u);
assert(s->io_source);
s->next = u->x11_sources;
u->x11_sources = s;
}
int pa_module_init(struct pa_core *c, struct pa_module*m) {
struct userdata *u = NULL;
struct pa_modargs *ma = NULL;
int major, minor;
unsigned int auto_ctrls, auto_values;
assert(c && m);
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
fprintf(stderr, __FILE__": failed to parse module arguments\n");
goto fail;
}
m->userdata = u = malloc(sizeof(struct userdata));
assert(u);
u->core = c;
u->display = NULL;
u->x11_sources = NULL;
u->scache_item = strdup(pa_modargs_get_value(ma, "sample", "bell"));
assert(u->scache_item);
if (pa_modargs_get_sink_index(ma, c, &u->sink_index) < 0) {
fprintf(stderr, __FILE__": Invalid sink specified\n");
goto fail;
}
if (!(u->display = XOpenDisplay(pa_modargs_get_value(ma, "display", NULL)))) {
fprintf(stderr, __FILE__": XOpenDisplay() failed\n");
goto fail;
}
new_io_source(u, ConnectionNumber(u->display));
major = XkbMajorVersion;
minor = XkbMinorVersion;
if (!XkbLibraryVersion(&major, &minor)) {
fprintf(stderr, __FILE__": XkbLibraryVersion() failed\n");
goto fail;
}
major = XkbMajorVersion;
minor = XkbMinorVersion;
if (!XkbQueryExtension(u->display, NULL, &u->xkb_event_base, NULL, &major, &minor)) {
fprintf(stderr, __FILE__": XkbQueryExtension() failed\n");
goto fail;
}
XkbSelectEvents(u->display, XkbUseCoreKbd, XkbBellNotifyMask, XkbBellNotifyMask);
auto_ctrls = auto_values = XkbAudibleBellMask;
XkbSetAutoResetControls(u->display, XkbAudibleBellMask, &auto_ctrls, &auto_values);
XkbChangeEnabledControls(u->display, XkbUseCoreKbd, XkbAudibleBellMask, 0);
pa_modargs_free(ma);
return 0;
fail:
if (ma)
pa_modargs_free(ma);
if (m->userdata)
pa_module_done(c, m);
return -1;
}
void pa_module_done(struct pa_core *c, struct pa_module*m) {
struct userdata *u = m->userdata;
assert(c && m && u);
while (u->x11_sources) {
struct x11_source *s = u->x11_sources;
u->x11_sources = u->x11_sources->next;
c->mainloop->cancel_io(c->mainloop, s->io_source);
free(s);
}
free(u->scache_item);
if (u->display)
XCloseDisplay(u->display);
free(u);
}
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