2 This file is part of PulseAudio.
4 Copyright 2004-2006 Lennart Poettering
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2.1 of the License,
9 or (at your option) any later version.
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
28 #include <pulsecore/macro.h>
29 #include <pulsecore/pstream-util.h>
32 #include "subscribe.h"
34 void pa_command_subscribe_event(pa_pdispatch
*pd
, uint32_t command
, uint32_t tag
, pa_tagstruct
*t
, void *userdata
) {
35 pa_context
*c
= userdata
;
36 pa_subscription_event_type_t e
;
40 pa_assert(command
== PA_COMMAND_SUBSCRIBE_EVENT
);
43 pa_assert(PA_REFCNT_VALUE(c
) >= 1);
47 if (pa_tagstruct_getu32(t
, &e
) < 0 ||
48 pa_tagstruct_getu32(t
, &idx
) < 0 ||
49 !pa_tagstruct_eof(t
)) {
50 pa_context_fail(c
, PA_ERR_PROTOCOL
);
54 if (c
->subscribe_callback
)
55 c
->subscribe_callback(c
, e
, idx
, c
->subscribe_userdata
);
61 pa_operation
* pa_context_subscribe(pa_context
*c
, pa_subscription_mask_t m
, pa_context_success_cb_t cb
, void *userdata
) {
67 pa_assert(PA_REFCNT_VALUE(c
) >= 1);
69 PA_CHECK_VALIDITY_RETURN_NULL(c
, c
->state
== PA_CONTEXT_READY
, PA_ERR_BADSTATE
);
71 o
= pa_operation_new(c
, NULL
, (pa_operation_cb_t
) cb
, userdata
);
73 t
= pa_tagstruct_command(c
, PA_COMMAND_SUBSCRIBE
, &tag
);
74 pa_tagstruct_putu32(t
, m
);
75 pa_pstream_send_tagstruct(c
->pstream
, t
);
76 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
);
81 void pa_context_set_subscribe_callback(pa_context
*c
, pa_context_subscribe_cb_t cb
, void *userdata
) {
83 pa_assert(PA_REFCNT_VALUE(c
) >= 1);
85 if (c
->state
== PA_CONTEXT_TERMINATED
|| c
->state
== PA_CONTEXT_FAILED
)
88 c
->subscribe_callback
= cb
;
89 c
->subscribe_userdata
= userdata
;