code.delx.au - pulseaudio/blob - src/modules/module-rescue-streams.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   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 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 <pulse/xmalloc.h>
  27
  28 #include <pulsecore/core.h>
  29 #include <pulsecore/sink-input.h>
  30 #include <pulsecore/source-output.h>
  31 #include <pulsecore/modargs.h>
  32 #include <pulsecore/log.h>
  33 #include <pulsecore/namereg.h>
  34
  35 #include "module-rescue-streams-symdef.h"
  36
  37 PA_MODULE_AUTHOR("Lennart Poettering")
  38 PA_MODULE_DESCRIPTION("When a sink/source is removed, try to move their streams to the default sink/source")
  39 PA_MODULE_VERSION(PACKAGE_VERSION)
  40
  41 static const char* const valid_modargs[] = {
  42     NULL,
  43 };
  44
  45 struct userdata {
  46     pa_hook_slot *sink_slot, *source_slot;
  47 };
  48
  49 static pa_hook_result_t sink_hook_callback(pa_core *c, pa_sink *sink, void* userdata) {
  50     pa_sink_input *i;
  51     pa_sink *target;
  52
  53     assert(c);
  54     assert(sink);
  55
  56     if (!pa_idxset_size(sink->inputs)) {
  57         pa_log_debug(__FILE__": No sink inputs to move away.");
  58         return PA_HOOK_OK;
  59     }
  60
  61     if (!(target = pa_namereg_get(c, NULL, PA_NAMEREG_SINK, 0))) {
  62         pa_log_info(__FILE__": No evacuation sink found.");
  63         return PA_HOOK_OK;
  64     }
  65
  66     assert(target != sink);
  67
  68     while ((i = pa_idxset_first(sink->inputs, NULL))) {
  69         if (pa_sink_input_move_to(i, target, 1) < 0) {
  70             pa_log_warn(__FILE__": Failed to move sink input %u \"%s\" to %s.", i->index, i->name, target->name);
  71             return PA_HOOK_OK;
  72         }
  73
  74         pa_log_info(__FILE__": Sucessfully moved sink input %u \"%s\" to %s.", i->index, i->name, target->name);
  75     }
  76
  77
  78     return PA_HOOK_OK;
  79 }
  80
  81 static pa_hook_result_t source_hook_callback(pa_core *c, pa_source *source, void* userdata) {
  82     pa_source_output *o;
  83     pa_source *target;
  84
  85     assert(c);
  86     assert(source);
  87
  88     if (!pa_idxset_size(source->outputs)) {
  89         pa_log_debug(__FILE__": No source outputs to move away.");
  90         return PA_HOOK_OK;
  91     }
  92
  93     if (!(target = pa_namereg_get(c, NULL, PA_NAMEREG_SOURCE, 0))) {
  94         pa_log_info(__FILE__": No evacuation source found.");
  95         return PA_HOOK_OK;
  96     }
  97
  98     assert(target != source);
  99
 100     while ((o = pa_idxset_first(source->outputs, NULL))) {
 101         if (pa_source_output_move_to(o, target) < 0) {
 102             pa_log_warn(__FILE__": Failed to move source output %u \"%s\" to %s.", o->index, o->name, target->name);
 103             return PA_HOOK_OK;
 104         }
 105
 106         pa_log_info(__FILE__": Sucessfully moved source output %u \"%s\" to %s.", o->index, o->name, target->name);
 107     }
 108
 109
 110     return PA_HOOK_OK;
 111 }
 112
 113 int pa__init(pa_core *c, pa_module*m) {
 114     pa_modargs *ma = NULL;
 115     struct userdata *u;
 116
 117     assert(c);
 118     assert(m);
 119
 120     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 121         pa_log(__FILE__": Failed to parse module arguments");
 122         return -1;
 123     }
 124
 125     m->userdata = u = pa_xnew(struct userdata, 1);
 126     u->sink_slot = pa_hook_connect(&c->hook_sink_disconnect, (pa_hook_cb_t) sink_hook_callback, NULL);
 127     u->source_slot = pa_hook_connect(&c->hook_source_disconnect, (pa_hook_cb_t) source_hook_callback, NULL);
 128
 129     pa_modargs_free(ma);
 130     return 0;
 131 }
 132
 133 void pa__done(pa_core *c, pa_module*m) {
 134     struct userdata *u;
 135
 136     assert(c);
 137     assert(m);
 138
 139     if (!m->userdata)
 140         return;
 141
 142     u = m->userdata;
 143     if (u->sink_slot)
 144         pa_hook_slot_free(u->sink_slot);
 145     if (u->source_slot)
 146         pa_hook_slot_free(u->source_slot);
 147
 148     pa_xfree(u);
 149 }