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
31 #include <pulsecore/gccmacro.h>
32 #include <pulsecore/pstream-util.h>
36 #include "subscribe.h"
38 void pa_command_subscribe_event(pa_pdispatch
*pd
, uint32_t command
, PA_GCC_UNUSED
uint32_t tag
, pa_tagstruct
*t
, void *userdata
) {
39 pa_context
*c
= userdata
;
40 pa_subscription_event_type_t e
;
44 assert(command
== PA_COMMAND_SUBSCRIBE_EVENT
);
50 if (pa_tagstruct_getu32(t
, &e
) < 0 ||
51 pa_tagstruct_getu32(t
, &idx
) < 0 ||
52 !pa_tagstruct_eof(t
)) {
53 pa_context_fail(c
, PA_ERR_PROTOCOL
);
57 if (c
->subscribe_callback
)
58 c
->subscribe_callback(c
, e
, idx
, c
->subscribe_userdata
);
65 pa_operation
* pa_context_subscribe(pa_context
*c
, pa_subscription_mask_t m
, pa_context_success_cb_t cb
, void *userdata
) {
73 PA_CHECK_VALIDITY_RETURN_NULL(c
, c
->state
== PA_CONTEXT_READY
, PA_ERR_BADSTATE
);
75 o
= pa_operation_new(c
, NULL
, (pa_operation_cb_t
) cb
, userdata
);
77 t
= pa_tagstruct_command(c
, PA_COMMAND_SUBSCRIBE
, &tag
);
78 pa_tagstruct_putu32(t
, m
);
79 pa_pstream_send_tagstruct(c
->pstream
, t
);
80 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
);
85 void pa_context_set_subscribe_callback(pa_context
*c
, pa_context_subscribe_cb_t cb
, void *userdata
) {
89 c
->subscribe_callback
= cb
;
90 c
->subscribe_userdata
= userdata
;