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       1                 :            : /***
       2                 :            :   This file is part of PulseAudio.
       3                 :            : 
       4                 :            :   Copyright 2004-2006 Lennart Poettering
       5                 :            : 
       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.
      10                 :            : 
      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.
      15                 :            : 
      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
      19                 :            :   USA.
      20                 :            : ***/
      21                 :            : 
      22                 :            : #ifdef HAVE_CONFIG_H
      23                 :            : #include <config.h>
      24                 :            : #endif
      25                 :            : 
      26                 :            : #include <stdio.h>
      27                 :            : 
      28                 :            : #include <pulsecore/macro.h>
      29                 :            : #include <pulsecore/pstream-util.h>
      30                 :            : 
      31                 :            : #include "internal.h"
      32                 :            : #include "subscribe.h"
      33                 :            : 
      34                 :          0 : void pa_command_subscribe_event(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
      35                 :          0 :     pa_context *c = userdata;
      36                 :            :     pa_subscription_event_type_t e;
      37                 :            :     uint32_t idx;
      38                 :            : 
      39         [ #  # ]:          0 :     pa_assert(pd);
      40         [ #  # ]:          0 :     pa_assert(command == PA_COMMAND_SUBSCRIBE_EVENT);
      41         [ #  # ]:          0 :     pa_assert(t);
      42         [ #  # ]:          0 :     pa_assert(c);
      43         [ #  # ]:          0 :     pa_assert(PA_REFCNT_VALUE(c) >= 1);
      44                 :            : 
      45                 :          0 :     pa_context_ref(c);
      46                 :            : 
      47   [ #  #  #  # ]:          0 :     if (pa_tagstruct_getu32(t, &e) < 0 ||
      48         [ #  # ]:          0 :         pa_tagstruct_getu32(t, &idx) < 0 ||
      49                 :          0 :         !pa_tagstruct_eof(t)) {
      50                 :          0 :         pa_context_fail(c, PA_ERR_PROTOCOL);
      51                 :          0 :         goto finish;
      52                 :            :     }
      53                 :            : 
      54         [ #  # ]:          0 :     if (c->subscribe_callback)
      55                 :          0 :         c->subscribe_callback(c, e, idx, c->subscribe_userdata);
      56                 :            : 
      57                 :            : finish:
      58                 :          0 :     pa_context_unref(c);
      59                 :          0 : }
      60                 :            : 
      61                 :          0 : pa_operation* pa_context_subscribe(pa_context *c, pa_subscription_mask_t m, pa_context_success_cb_t cb, void *userdata) {
      62                 :            :     pa_operation *o;
      63                 :            :     pa_tagstruct *t;
      64                 :            :     uint32_t tag;
      65                 :            : 
      66         [ #  # ]:          0 :     pa_assert(c);
      67         [ #  # ]:          0 :     pa_assert(PA_REFCNT_VALUE(c) >= 1);
      68                 :            : 
      69         [ #  # ]:          0 :     PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
      70                 :            : 
      71                 :          0 :     o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
      72                 :            : 
      73                 :          0 :     t = pa_tagstruct_command(c, PA_COMMAND_SUBSCRIBE, &tag);
      74                 :          0 :     pa_tagstruct_putu32(t, m);
      75                 :          0 :     pa_pstream_send_tagstruct(c->pstream, t);
      76                 :          0 :     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);
      77                 :            : 
      78                 :          0 :     return o;
      79                 :            : }
      80                 :            : 
      81                 :          0 : void pa_context_set_subscribe_callback(pa_context *c, pa_context_subscribe_cb_t cb, void *userdata) {
      82         [ #  # ]:          0 :     pa_assert(c);
      83         [ #  # ]:          0 :     pa_assert(PA_REFCNT_VALUE(c) >= 1);
      84                 :            : 
      85         [ #  # ]:          0 :     if (c->state == PA_CONTEXT_TERMINATED || c->state == PA_CONTEXT_FAILED)
      86                 :          0 :         return;
      87                 :            : 
      88                 :          0 :     c->subscribe_callback = cb;
      89                 :          0 :     c->subscribe_userdata = userdata;
      90                 :            : }