mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-10-29 05:40:23 -04:00
ac595189fd
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@138 fefdeb5f-60dc-0310-8127-8f9354f1896f
535 lines
14 KiB
C
535 lines
14 KiB
C
/* $Id$ */
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/***
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This file is part of polypaudio.
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polypaudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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polypaudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with polypaudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <assert.h>
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#include "glib-mainloop.h"
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#include "idxset.h"
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#include "xmalloc.h"
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struct pa_io_event {
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struct pa_glib_mainloop *mainloop;
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int dead;
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GIOChannel *io_channel;
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GSource *source;
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GIOCondition io_condition;
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int fd;
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void (*callback) (struct pa_mainloop_api*m, struct pa_io_event *e, int fd, enum pa_io_event_flags f, void *userdata);
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void *userdata;
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void (*destroy_callback) (struct pa_mainloop_api *m, struct pa_io_event*e, void *userdata);
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struct pa_io_event *next, *prev;
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};
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struct pa_time_event {
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struct pa_glib_mainloop *mainloop;
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int dead;
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GSource *source;
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struct timeval timeval;
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void (*callback) (struct pa_mainloop_api*m, struct pa_time_event *e, const struct timeval *tv, void *userdata);
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void *userdata;
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void (*destroy_callback) (struct pa_mainloop_api *m, struct pa_time_event*e, void *userdata);
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struct pa_time_event *next, *prev;
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};
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struct pa_defer_event {
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struct pa_glib_mainloop *mainloop;
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int dead;
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GSource *source;
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void (*callback) (struct pa_mainloop_api*m, struct pa_defer_event *e, void *userdata);
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void *userdata;
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void (*destroy_callback) (struct pa_mainloop_api *m, struct pa_defer_event*e, void *userdata);
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struct pa_defer_event *next, *prev;
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};
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struct pa_glib_mainloop {
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GMainContext *glib_main_context;
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struct pa_mainloop_api api;
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GSource *cleanup_source;
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struct pa_io_event *io_events, *dead_io_events;
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struct pa_time_event *time_events, *dead_time_events;
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struct pa_defer_event *defer_events, *dead_defer_events;
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};
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static void schedule_free_dead_events(struct pa_glib_mainloop *g);
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static void glib_io_enable(struct pa_io_event*e, enum pa_io_event_flags f);
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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) {
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struct pa_io_event *e;
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struct pa_glib_mainloop *g;
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assert(m && m->userdata && fd >= 0 && callback);
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g = m->userdata;
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e = pa_xmalloc(sizeof(struct pa_io_event));
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e->mainloop = m->userdata;
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e->dead = 0;
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e->fd = fd;
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e->callback = callback;
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e->userdata = userdata;
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e->destroy_callback = NULL;
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e->io_channel = g_io_channel_unix_new(e->fd);
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assert(e->io_channel);
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e->source = NULL;
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e->io_condition = 0;
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glib_io_enable(e, f);
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e->next = g->io_events;
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if (e->next) e->next->prev = e;
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g->io_events = e;
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e->prev = NULL;
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return e;
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}
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static gboolean io_cb(GIOChannel *source, GIOCondition condition, gpointer data) {
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struct pa_io_event *e = data;
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enum pa_io_event_flags f;
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assert(source && e && e->io_channel == source);
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f = (condition & G_IO_IN ? PA_IO_EVENT_INPUT : 0) |
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(condition & G_IO_OUT ? PA_IO_EVENT_OUTPUT : 0) |
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(condition & G_IO_ERR ? PA_IO_EVENT_ERROR : 0) |
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(condition & G_IO_HUP ? PA_IO_EVENT_HANGUP : 0);
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e->callback(&e->mainloop->api, e, e->fd, f, e->userdata);
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return TRUE;
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}
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static void glib_io_enable(struct pa_io_event*e, enum pa_io_event_flags f) {
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GIOCondition c;
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assert(e && !e->dead);
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c = (f & PA_IO_EVENT_INPUT ? G_IO_IN : 0) | (f & PA_IO_EVENT_OUTPUT ? G_IO_OUT : 0);
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if (c == e->io_condition)
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return;
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if (e->source) {
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g_source_destroy(e->source);
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g_source_unref(e->source);
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}
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e->source = g_io_create_watch(e->io_channel, c | G_IO_ERR | G_IO_HUP);
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assert(e->source);
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g_source_set_callback(e->source, (GSourceFunc) io_cb, e, NULL);
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g_source_attach(e->source, e->mainloop->glib_main_context);
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g_source_set_priority(e->source, G_PRIORITY_DEFAULT);
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e->io_condition = c;
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}
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static void glib_io_free(struct pa_io_event*e) {
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assert(e && !e->dead);
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if (e->source) {
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g_source_destroy(e->source);
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g_source_unref(e->source);
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e->source = NULL;
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}
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if (e->prev)
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e->prev->next = e->next;
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else
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e->mainloop->io_events = e->next;
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if (e->next)
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e->next->prev = e->prev;
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if ((e->next = e->mainloop->dead_io_events))
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e->next->prev = e;
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e->mainloop->dead_io_events = e;
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e->prev = NULL;
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e->dead = 1;
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schedule_free_dead_events(e->mainloop);
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}
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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)) {
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assert(e);
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e->destroy_callback = callback;
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}
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/* Time sources */
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static void glib_time_restart(struct pa_time_event*e, const struct timeval *tv);
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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) {
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struct pa_glib_mainloop *g;
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struct pa_time_event *e;
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assert(m && m->userdata && tv && callback);
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g = m->userdata;
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e = pa_xmalloc(sizeof(struct pa_time_event));
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e->mainloop = g;
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e->dead = 0;
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e->callback = callback;
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e->userdata = userdata;
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e->destroy_callback = NULL;
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e->source = NULL;
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glib_time_restart(e, tv);
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e->next = g->time_events;
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if (e->next) e->next->prev = e;
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g->time_events = e;
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e->prev = NULL;
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return e;
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}
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static guint msec_diff(const struct timeval *a, const struct timeval *b) {
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guint r;
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assert(a && b);
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if (a->tv_sec < b->tv_sec)
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return 0;
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if (a->tv_sec == b->tv_sec && a->tv_sec <= b->tv_sec)
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return 0;
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r = (a->tv_sec-b->tv_sec)*1000;
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if (a->tv_usec >= b->tv_usec)
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r += (a->tv_usec - b->tv_usec) / 1000;
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else
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r -= (b->tv_usec - a->tv_usec) / 1000;
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return r;
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}
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static gboolean time_cb(gpointer data) {
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struct pa_time_event* e = data;
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assert(e && e->mainloop && e->source);
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g_source_unref(e->source);
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e->source = NULL;
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e->callback(&e->mainloop->api, e, &e->timeval, e->userdata);
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return FALSE;
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}
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static void glib_time_restart(struct pa_time_event*e, const struct timeval *tv) {
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struct timeval now;
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assert(e && e->mainloop && !e->dead);
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gettimeofday(&now, NULL);
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if (e->source) {
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g_source_destroy(e->source);
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g_source_unref(e->source);
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}
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if (tv) {
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e->timeval = *tv;
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e->source = g_timeout_source_new(msec_diff(tv, &now));
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assert(e->source);
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g_source_set_callback(e->source, time_cb, e, NULL);
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g_source_set_priority(e->source, G_PRIORITY_DEFAULT);
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g_source_attach(e->source, e->mainloop->glib_main_context);
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} else
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e->source = NULL;
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}
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static void glib_time_free(struct pa_time_event *e) {
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assert(e && e->mainloop && !e->dead);
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if (e->source) {
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g_source_destroy(e->source);
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g_source_unref(e->source);
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e->source = NULL;
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}
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if (e->prev)
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e->prev->next = e->next;
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else
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e->mainloop->time_events = e->next;
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if (e->next)
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e->next->prev = e->prev;
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if ((e->next = e->mainloop->dead_time_events))
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e->next->prev = e;
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e->mainloop->dead_time_events = e;
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e->prev = NULL;
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e->dead = 1;
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schedule_free_dead_events(e->mainloop);
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}
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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)) {
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assert(e);
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e->destroy_callback = callback;
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}
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/* Deferred sources */
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static void glib_defer_enable(struct pa_defer_event *e, int b);
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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) {
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struct pa_defer_event *e;
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struct pa_glib_mainloop *g;
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assert(m && m->userdata && callback);
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g = m->userdata;
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e = pa_xmalloc(sizeof(struct pa_defer_event));
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e->mainloop = g;
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e->dead = 0;
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e->callback = callback;
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e->userdata = userdata;
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e->destroy_callback = NULL;
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e->source = NULL;
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glib_defer_enable(e, 1);
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e->next = g->defer_events;
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if (e->next) e->next->prev = e;
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g->defer_events = e;
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e->prev = NULL;
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return e;
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}
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static gboolean idle_cb(gpointer data) {
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struct pa_defer_event* e = data;
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assert(e && e->mainloop && e->source);
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e->callback(&e->mainloop->api, e, e->userdata);
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return TRUE;
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}
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static void glib_defer_enable(struct pa_defer_event *e, int b) {
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assert(e && e->mainloop);
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if (e->source && !b) {
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g_source_destroy(e->source);
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g_source_unref(e->source);
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e->source = NULL;
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} else if (!e->source && b) {
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e->source = g_idle_source_new();
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assert(e->source);
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g_source_set_callback(e->source, idle_cb, e, NULL);
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g_source_attach(e->source, e->mainloop->glib_main_context);
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g_source_set_priority(e->source, G_PRIORITY_HIGH);
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}
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}
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static void glib_defer_free(struct pa_defer_event *e) {
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assert(e && e->mainloop && !e->dead);
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if (e->source) {
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g_source_destroy(e->source);
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g_source_unref(e->source);
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e->source = NULL;
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}
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if (e->prev)
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e->prev->next = e->next;
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else
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e->mainloop->defer_events = e->next;
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if (e->next)
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e->next->prev = e->prev;
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if ((e->next = e->mainloop->dead_defer_events))
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e->next->prev = e;
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e->mainloop->dead_defer_events = e;
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e->prev = NULL;
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e->dead = 1;
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schedule_free_dead_events(e->mainloop);
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}
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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)) {
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assert(e);
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e->destroy_callback = callback;
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}
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/* quit() */
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static void glib_quit(struct pa_mainloop_api*a, int retval) {
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struct pa_glib_mainloop *g;
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assert(a && a->userdata);
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g = a->userdata;
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/* NOOP */
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}
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static const struct pa_mainloop_api vtable = {
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userdata: NULL,
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io_new: glib_io_new,
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io_enable: glib_io_enable,
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io_free: glib_io_free,
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io_set_destroy: glib_io_set_destroy,
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time_new : glib_time_new,
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time_restart : glib_time_restart,
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time_free : glib_time_free,
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time_set_destroy : glib_time_set_destroy,
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defer_new : glib_defer_new,
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defer_enable : glib_defer_enable,
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defer_free : glib_defer_free,
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defer_set_destroy : glib_defer_set_destroy,
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quit : glib_quit,
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};
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struct pa_glib_mainloop *pa_glib_mainloop_new(GMainContext *c) {
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struct pa_glib_mainloop *g;
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g = pa_xmalloc(sizeof(struct pa_glib_mainloop));
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if (c) {
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g->glib_main_context = c;
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g_main_context_ref(c);
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} else
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g->glib_main_context = g_main_context_default();
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g->api = vtable;
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g->api.userdata = g;
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g->io_events = g->dead_io_events = NULL;
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g->time_events = g->dead_time_events = NULL;
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g->defer_events = g->dead_defer_events = NULL;
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g->cleanup_source = NULL;
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return g;
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}
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static void free_io_events(struct pa_io_event *e) {
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while (e) {
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struct pa_io_event *r = e;
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e = r->next;
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if (r->source) {
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g_source_destroy(r->source);
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g_source_unref(r->source);
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}
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if (r->io_channel)
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g_io_channel_unref(r->io_channel);
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if (r->destroy_callback)
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r->destroy_callback(&r->mainloop->api, r, r->userdata);
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pa_xfree(r);
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}
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}
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static void free_time_events(struct pa_time_event *e) {
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while (e) {
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struct pa_time_event *r = e;
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e = r->next;
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if (r->source) {
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g_source_destroy(r->source);
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g_source_unref(r->source);
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}
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if (r->destroy_callback)
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r->destroy_callback(&r->mainloop->api, r, r->userdata);
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pa_xfree(r);
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}
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}
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static void free_defer_events(struct pa_defer_event *e) {
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while (e) {
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struct pa_defer_event *r = e;
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e = r->next;
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if (r->source) {
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g_source_destroy(r->source);
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g_source_unref(r->source);
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}
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if (r->destroy_callback)
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r->destroy_callback(&r->mainloop->api, r, r->userdata);
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pa_xfree(r);
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}
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}
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void pa_glib_mainloop_free(struct pa_glib_mainloop* g) {
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assert(g);
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free_io_events(g->io_events);
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free_io_events(g->dead_io_events);
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free_defer_events(g->defer_events);
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free_defer_events(g->dead_defer_events);
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free_time_events(g->time_events);
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free_time_events(g->dead_time_events);
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if (g->cleanup_source) {
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g_source_destroy(g->cleanup_source);
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g_source_unref(g->cleanup_source);
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}
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g_main_context_unref(g->glib_main_context);
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pa_xfree(g);
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}
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struct pa_mainloop_api* pa_glib_mainloop_get_api(struct pa_glib_mainloop *g) {
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assert(g);
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return &g->api;
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}
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static gboolean free_dead_events(gpointer p) {
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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_destroy(g->cleanup_source);
|
|
g_source_unref(g->cleanup_source);
|
|
g->cleanup_source = NULL;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void schedule_free_dead_events(struct pa_glib_mainloop *g) {
|
|
assert(g && g->glib_main_context);
|
|
|
|
if (g->cleanup_source)
|
|
return;
|
|
|
|
g->cleanup_source = g_idle_source_new();
|
|
assert(g->cleanup_source);
|
|
g_source_set_callback(g->cleanup_source, free_dead_events, g, NULL);
|
|
g_source_attach(g->cleanup_source, g->glib_main_context);
|
|
}
|