--- /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 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 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 <assert.h>
+
+#include "glib-mainloop.h"
+#include "idxset.h"
+#include "xmalloc.h"
+
+struct pa_io_event {
+ struct pa_glib_mainloop *mainloop;
+ int dead;
+ GIOChannel *io_channel;
+ guint source;
+ GIOCondition io_condition;
+ int fd;
+ void (*callback) (struct pa_mainloop_api*m, struct pa_io_event *e, int fd, enum pa_io_event_flags f, void *userdata);
+ void *userdata;
+ void (*destroy_callback) (struct pa_mainloop_api *m, struct pa_io_event*e, void *userdata);
+ struct pa_io_event *next, *prev;
+};
+
+struct pa_time_event {
+ struct pa_glib_mainloop *mainloop;
+ int dead;
+ guint source;
+ struct timeval timeval;
+ void (*callback) (struct pa_mainloop_api*m, struct pa_time_event *e, const struct timeval *tv, void *userdata);
+ void *userdata;
+ void (*destroy_callback) (struct pa_mainloop_api *m, struct pa_time_event*e, void *userdata);
+ struct pa_time_event *next, *prev;
+};
+
+struct pa_defer_event {
+ struct pa_glib_mainloop *mainloop;
+ int dead;
+ guint source;
+ void (*callback) (struct pa_mainloop_api*m, struct pa_defer_event *e, void *userdata);
+ void *userdata;
+ void (*destroy_callback) (struct pa_mainloop_api *m, struct pa_defer_event*e, void *userdata);
+ struct pa_defer_event *next, *prev;
+};
+
+struct pa_glib_mainloop {
+ struct pa_mainloop_api api;
+ guint cleanup_source;
+ struct pa_io_event *io_events, *dead_io_events;
+ struct pa_time_event *time_events, *dead_time_events;
+ struct pa_defer_event *defer_events, *dead_defer_events;
+};
+
+static void schedule_free_dead_events(struct pa_glib_mainloop *g);
+
+static void glib_io_enable(struct pa_io_event*e, enum pa_io_event_flags f);
+
+static struct pa_io_event* glib_io_new(struct pa_mainloop_api*m, int fd, enum pa_io_event_flags f, void (*callback) (struct pa_mainloop_api*m, struct pa_io_event*e, int fd, enum pa_io_event_flags f, void *userdata), void *userdata) {
+ struct pa_io_event *e;
+ struct pa_glib_mainloop *g;
+
+ assert(m && m->userdata && fd >= 0 && callback);
+ g = m->userdata;
+
+ e = pa_xmalloc(sizeof(struct pa_io_event));
+ e->mainloop = m->userdata;
+ e->dead = 0;
+ e->fd = fd;
+ e->callback = callback;
+ e->userdata = userdata;
+ e->destroy_callback = NULL;
+
+ e->io_channel = g_io_channel_unix_new(e->fd);
+ assert(e->io_channel);
+ e->source = (guint) -1;
+ e->io_condition = 0;
+
+ glib_io_enable(e, f);
+
+ e->next = g->io_events;
+ if (e->next) e->next->prev = e;
+ g->io_events = e;
+ e->prev = NULL;
+
+ return e;
+}
+
+static gboolean io_cb(GIOChannel *source, GIOCondition condition, gpointer data) {
+ struct pa_io_event *e = data;
+ enum pa_io_event_flags f;
+ assert(source && e && e->io_channel == source);
+
+ f = (condition & G_IO_IN ? PA_IO_EVENT_INPUT : 0) |
+ (condition & G_IO_OUT ? PA_IO_EVENT_OUTPUT : 0) |
+ (condition & G_IO_ERR ? PA_IO_EVENT_ERROR : 0) |
+ (condition & G_IO_HUP ? PA_IO_EVENT_HANGUP : 0);
+
+ e->callback(&e->mainloop->api, e, e->fd, f, e->userdata);
+ return TRUE;
+}
+
+static void glib_io_enable(struct pa_io_event*e, enum pa_io_event_flags f) {
+ GIOCondition c;
+ assert(e && !e->dead);
+
+ c = (f & PA_IO_EVENT_INPUT ? G_IO_IN : 0) | (f & PA_IO_EVENT_OUTPUT ? G_IO_OUT : 0);
+
+ if (c == e->io_condition)
+ return;
+
+ if (e->source != (guint) -1)
+ g_source_remove(e->source);
+
+ e->source = g_io_add_watch_full(e->io_channel, G_PRIORITY_DEFAULT, c | G_IO_ERR | G_IO_HUP, io_cb, e, NULL);
+ assert(e->source != (guint) -1);
+ e->io_condition = c;
+}
+
+static void glib_io_free(struct pa_io_event*e) {
+ assert(e && !e->dead);
+
+ if (e->source != (guint) -1) {
+ g_source_remove(e->source);
+ e->source = (guint) -1;
+ }
+
+ if (e->prev)
+ e->prev->next = e->next;
+ else
+ e->mainloop->io_events = e->next;
+
+ if (e->next)
+ e->next->prev = e->prev;
+
+ if ((e->next = e->mainloop->dead_io_events))
+ e->next->prev = e;
+
+ e->mainloop->dead_io_events = e;
+ e->prev = NULL;
+
+ e->dead = 1;
+ schedule_free_dead_events(e->mainloop);
+}
+
+static void glib_io_set_destroy(struct pa_io_event*e, void (*callback)(struct pa_mainloop_api*m, struct pa_io_event *e, void *userdata)) {
+ assert(e);
+ e->destroy_callback = callback;
+}
+
+/* Time sources */
+
+static void glib_time_restart(struct pa_time_event*e, const struct timeval *tv);
+
+static struct pa_time_event* glib_time_new(struct pa_mainloop_api*m, const struct timeval *tv, void (*callback) (struct pa_mainloop_api*m, struct pa_time_event*e, const struct timeval *tv, void *userdata), void *userdata) {
+ struct pa_glib_mainloop *g;
+ struct pa_time_event *e;
+
+ assert(m && m->userdata && tv && callback);
+ g = m->userdata;
+
+ e = pa_xmalloc(sizeof(struct pa_time_event));
+ e->mainloop = g;
+ e->dead = 0;
+ e->callback = callback;
+ e->userdata = userdata;
+ e->destroy_callback = NULL;
+ e->source = (guint) -1;
+
+ glib_time_restart(e, tv);
+
+ e->next = g->time_events;
+ if (e->next) e->next->prev = e;
+ g->time_events = e;
+ e->prev = NULL;
+
+ return e;
+}
+
+static guint msec_diff(const struct timeval *a, const struct timeval *b) {
+ guint r;
+ assert(a && b);
+
+ if (a->tv_sec < b->tv_sec)
+ return 0;
+
+ if (a->tv_sec == b->tv_sec && a->tv_sec <= b->tv_sec)
+ return 0;
+
+ r = (a->tv_sec-b->tv_sec)*1000;
+
+ if (a->tv_usec >= b->tv_usec)
+ r += (a->tv_usec - b->tv_usec) / 1000;
+ else
+ r -= (b->tv_usec - a->tv_usec) / 1000;
+
+ return r;
+}
+
+static gboolean time_cb(gpointer data) {
+ struct pa_time_event* e = data;
+ assert(e && e->mainloop && e->source != (guint) -1);
+
+ g_source_remove(e->source);
+ e->source = (guint) -1;
+
+ e->callback(&e->mainloop->api, e, &e->timeval, e->userdata);
+ return FALSE;
+}
+
+static void glib_time_restart(struct pa_time_event*e, const struct timeval *tv) {
+ struct timeval now;
+ assert(e && e->mainloop && !e->dead);
+
+ gettimeofday(&now, NULL);
+ if (e->source != (guint) -1)
+ g_source_remove(e->source);
+
+ if (tv) {
+ e->timeval = *tv;
+ e->source = g_timeout_add_full(G_PRIORITY_DEFAULT, msec_diff(tv, &now), time_cb, e, NULL);
+ assert(e->source != (guint) -1);
+ } else
+ e->source = (guint) -1;
+ }
+
+static void glib_time_free(struct pa_time_event *e) {
+ assert(e && e->mainloop && !e->dead);
+
+ if (e->source != (guint) -1) {
+ g_source_remove(e->source);
+ e->source = (guint) -1;
+ }
+
+ if (e->prev)
+ e->prev->next = e->next;
+ else
+ e->mainloop->time_events = e->next;
+
+ if (e->next)
+ e->next->prev = e->prev;
+
+ if ((e->next = e->mainloop->dead_time_events))
+ e->next->prev = e;
+
+ e->mainloop->dead_time_events = e;
+ e->prev = NULL;
+
+ e->dead = 1;
+ schedule_free_dead_events(e->mainloop);
+}
+
+static void glib_time_set_destroy(struct pa_time_event *e, void (*callback)(struct pa_mainloop_api*m, struct pa_time_event*e, void *userdata)) {
+ assert(e);
+ e->destroy_callback = callback;
+}
+
+/* Deferred sources */
+
+static void glib_defer_enable(struct pa_defer_event *e, int b);
+
+static struct pa_defer_event* glib_defer_new(struct pa_mainloop_api*m, void (*callback) (struct pa_mainloop_api*m, struct pa_defer_event *e, void *userdata), void *userdata) {
+ struct pa_defer_event *e;
+ struct pa_glib_mainloop *g;
+
+ assert(m && m->userdata && callback);
+ g = m->userdata;
+
+ e = pa_xmalloc(sizeof(struct pa_defer_event));
+ e->mainloop = g;
+ e->dead = 0;
+ e->callback = callback;
+ e->userdata = userdata;
+ e->destroy_callback = NULL;
+ e->source = (guint) -1;
+
+ glib_defer_enable(e, 1);
+
+ e->next = g->defer_events;
+ if (e->next) e->next->prev = e;
+ g->defer_events = e;
+ e->prev = NULL;
+ return e;
+}
+
+static gboolean idle_cb(gpointer data) {
+ struct pa_defer_event* e = data;
+ assert(e && e->mainloop && e->source != (guint) -1);
+
+ e->callback(&e->mainloop->api, e, e->userdata);
+ return TRUE;
+}
+
+static void glib_defer_enable(struct pa_defer_event *e, int b) {
+ assert(e && e->mainloop);
+
+ if (e->source != (guint) -1 && !b) {
+ g_source_remove(e->source);
+ e->source = (guint) -1;
+ } else if (e->source == (guint) -1 && b) {
+ e->source = g_idle_add_full(G_PRIORITY_HIGH, idle_cb, e, NULL);
+ assert(e->source != (guint) -1);
+ }
+}
+
+static void glib_defer_free(struct pa_defer_event *e) {
+ assert(e && e->mainloop && !e->dead);
+
+ if (e->source != (guint) -1) {
+ g_source_remove(e->source);
+ e->source = (guint) -1;
+ }
+
+ if (e->prev)
+ e->prev->next = e->next;
+ else
+ e->mainloop->defer_events = e->next;
+
+ if (e->next)
+ e->next->prev = e->prev;
+
+ if ((e->next = e->mainloop->dead_defer_events))
+ e->next->prev = e;
+
+ e->mainloop->dead_defer_events = e;
+ e->prev = NULL;
+
+ e->dead = 1;
+ schedule_free_dead_events(e->mainloop);
+}
+
+static void glib_defer_set_destroy(struct pa_defer_event *e, void (*callback)(struct pa_mainloop_api *m, struct pa_defer_event *e, void *userdata)) {
+ assert(e);
+ e->destroy_callback = callback;
+}
+
+/* quit() */
+
+static void glib_quit(struct pa_mainloop_api*a, int retval) {
+ struct pa_glib_mainloop *g;
+ assert(a && a->userdata);
+ g = a->userdata;
+
+ /* NOOP */
+}
+
+static const struct pa_mainloop_api vtable = {
+ .userdata = NULL,
+
+ .io_new = glib_io_new,
+ .io_enable = glib_io_enable,
+ .io_free = glib_io_free,
+ .io_set_destroy= glib_io_set_destroy,
+
+ .time_new = glib_time_new,
+ .time_restart = glib_time_restart,
+ .time_free = glib_time_free,
+ .time_set_destroy = glib_time_set_destroy,
+
+ .defer_new = glib_defer_new,
+ .defer_enable = glib_defer_enable,
+ .defer_free = glib_defer_free,
+ .defer_set_destroy = glib_defer_set_destroy,
+
+ .quit = glib_quit,
+};
+
+struct pa_glib_mainloop *pa_glib_mainloop_new(void) {
+ struct pa_glib_mainloop *g;
+
+ g = pa_xmalloc(sizeof(struct pa_glib_mainloop));
+
+ g->api = vtable;
+ g->api.userdata = g;
+
+ g->io_events = g->dead_io_events = NULL;
+ g->time_events = g->dead_time_events = NULL;
+ g->defer_events = g->dead_defer_events = NULL;
+
+ g->cleanup_source = (guint) -1;
+ return g;
+}
+
+static void free_io_events(struct pa_io_event *e) {
+ while (e) {
+ struct pa_io_event *r = e;
+ e = r->next;
+
+ if (r->source != (guint) -1)
+ g_source_remove(r->source);
+
+ if (r->io_channel)
+ g_io_channel_unref(r->io_channel);
+
+ if (r->destroy_callback)
+ r->destroy_callback(&r->mainloop->api, r, r->userdata);
+
+ pa_xfree(r);
+ }
+}
+
+static void free_time_events(struct pa_time_event *e) {
+ while (e) {
+ struct pa_time_event *r = e;
+ e = r->next;
+
+ if (r->source != (guint) -1)
+ g_source_remove(r->source);
+
+ if (r->destroy_callback)
+ r->destroy_callback(&r->mainloop->api, r, r->userdata);
+
+ pa_xfree(r);
+ }
+}
+
+static void free_defer_events(struct pa_defer_event *e) {
+ while (e) {
+ struct pa_defer_event *r = e;
+ e = r->next;
+
+ if (r->source != (guint) -1)
+ g_source_remove(r->source);
+
+ if (r->destroy_callback)
+ r->destroy_callback(&r->mainloop->api, r, r->userdata);
+
+ pa_xfree(r);
+ }
+}
+
+void pa_glib_mainloop_free(struct pa_glib_mainloop* g) {
+ assert(g);
+
+ free_io_events(g->io_events);
+ free_io_events(g->dead_io_events);
+ free_defer_events(g->defer_events);
+ free_defer_events(g->dead_defer_events);
+ free_time_events(g->time_events);
+ free_time_events(g->dead_time_events);
+
+ if (g->cleanup_source != (guint) -1)
+ g_source_remove(g->cleanup_source);
+
+ pa_xfree(g);
+}
+
+struct pa_mainloop_api* pa_glib_mainloop_get_api(struct pa_glib_mainloop *g) {
+ assert(g);
+ return &g->api;
+}
+
+static gboolean free_dead_events(gpointer p) {
+ struct pa_glib_mainloop *g = p;
+ assert(g);
+
+ free_io_events(g->dead_io_events);
+ free_defer_events(g->dead_defer_events);
+ free_time_events(g->dead_time_events);
+
+ g->dead_io_events = NULL;
+ g->dead_defer_events = NULL;
+ g->dead_time_events = NULL;
+
+ g_source_remove(g->cleanup_source);
+ g->cleanup_source = (guint) -1;
+
+ return FALSE;
+}
+
+static void schedule_free_dead_events(struct pa_glib_mainloop *g) {
+ assert(g);
+
+ if (g->cleanup_source != (guint) -1)
+ return;
+
+ g->cleanup_source = g_idle_add_full(G_PRIORITY_HIGH, free_dead_events, g, NULL);
+}
projects / platform / upstream / pulseaudio.git / commitdiff