4 This file is part of PulseAudio.
6 Copyright 2004-2006 Lennart Poettering
8 PulseAudio is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published
10 by the Free Software Foundation; either version 2 of the License,
11 or (at your option) any later version.
13 PulseAudio is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with PulseAudio; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
30 #include <pulse/gccmacro.h>
32 #include <pulsecore/macro.h>
33 #include <pulsecore/pstream-util.h>
37 #include "subscribe.h"
39 void pa_command_subscribe_event(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) {
40 pa_context *c = userdata;
41 pa_subscription_event_type_t e;
45 pa_assert(command == PA_COMMAND_SUBSCRIBE_EVENT);
48 pa_assert(PA_REFCNT_VALUE(c) >= 1);
52 if (pa_tagstruct_getu32(t, &e) < 0 ||
53 pa_tagstruct_getu32(t, &idx) < 0 ||
54 !pa_tagstruct_eof(t)) {
55 pa_context_fail(c, PA_ERR_PROTOCOL);
59 if (c->subscribe_callback)
60 c->subscribe_callback(c, e, idx, c->subscribe_userdata);
67 pa_operation* pa_context_subscribe(pa_context *c, pa_subscription_mask_t m, pa_context_success_cb_t cb, void *userdata) {
73 pa_assert(PA_REFCNT_VALUE(c) >= 1);
75 PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
77 o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
79 t = pa_tagstruct_command(c, PA_COMMAND_SUBSCRIBE, &tag);
80 pa_tagstruct_putu32(t, m);
81 pa_pstream_send_tagstruct(c->pstream, t);
82 pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
87 void pa_context_set_subscribe_callback(pa_context *c, pa_context_subscribe_cb_t cb, void *userdata) {
89 pa_assert(PA_REFCNT_VALUE(c) >= 1);
91 if (c->state == PA_CONTEXT_TERMINATED || c->state == PA_CONTEXT_FAILED)
94 c->subscribe_callback = cb;
95 c->subscribe_userdata = userdata;