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/***
This file is part of PulseAudio.
Copyright 2004-2006 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 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, 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 <stdio.h>
#include <pulse/gccmacro.h>
#include <pulsecore/macro.h>
#include <pulsecore/pstream-util.h>
#include "internal.h"
#include "subscribe.h"
void pa_command_subscribe_event(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) {
pa_context *c = userdata;
pa_subscription_event_type_t e;
uint32_t idx;
pa_assert(pd);
pa_assert(command == PA_COMMAND_SUBSCRIBE_EVENT);
pa_assert(t);
pa_assert(c);
pa_assert(PA_REFCNT_VALUE(c) >= 1);
pa_context_ref(c);
if (pa_tagstruct_getu32(t, &e) < 0 ||
pa_tagstruct_getu32(t, &idx) < 0 ||
!pa_tagstruct_eof(t)) {
pa_context_fail(c, PA_ERR_PROTOCOL);
goto finish;
}
if (c->subscribe_callback)
c->subscribe_callback(c, e, idx, c->subscribe_userdata);
finish:
pa_context_unref(c);
}
pa_operation* pa_context_subscribe(pa_context *c, pa_subscription_mask_t m, pa_context_success_cb_t cb, void *userdata) {
pa_operation *o;
pa_tagstruct *t;
uint32_t tag;
pa_assert(c);
pa_assert(PA_REFCNT_VALUE(c) >= 1);
PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
t = pa_tagstruct_command(c, PA_COMMAND_SUBSCRIBE, &tag);
pa_tagstruct_putu32(t, m);
pa_pstream_send_tagstruct(c->pstream, t);
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);
return o;
}
void pa_context_set_subscribe_callback(pa_context *c, pa_context_subscribe_cb_t cb, void *userdata) {
pa_assert(c);
pa_assert(PA_REFCNT_VALUE(c) >= 1);
if (c->state == PA_CONTEXT_TERMINATED || c->state == PA_CONTEXT_FAILED)
return;
c->subscribe_callback = cb;
c->subscribe_userdata = userdata;
}
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