src/modules/module-cork-music-on-phone.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2009 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 <pulsecore/macro.h>
  27 #include <pulsecore/hashmap.h>
  28 #include <pulsecore/hook-list.h>
  29 #include <pulsecore/core.h>
  30 #include <pulsecore/core-util.h>
  31 #include <pulsecore/sink-input.h>
  32 #include <pulsecore/modargs.h>
  33
  34 #include "module-cork-music-on-phone-symdef.h"
  35
  36 PA_MODULE_AUTHOR("Lennart Poettering");
  37 PA_MODULE_DESCRIPTION("Mute or cork music while a phone stream exists");
  38 PA_MODULE_VERSION(PACKAGE_VERSION);
  39 PA_MODULE_LOAD_ONCE(TRUE);
  40
  41 static const char* const valid_modargs[] = {
  42     NULL
  43 };
  44
  45 struct userdata {
  46     pa_core *core;
  47     pa_hashmap *cork_state;
  48     pa_hook_slot
  49         *sink_input_put_slot,
  50         *sink_input_unlink_slot,
  51         *sink_input_move_start_slot,
  52         *sink_input_move_finish_slot;
  53 };
  54
  55 static pa_bool_t shall_cork(pa_sink *s, pa_sink_input *ignore) {
  56     pa_sink_input *j;
  57     uint32_t idx;
  58     pa_sink_assert_ref(s);
  59
  60     for (j = PA_SINK_INPUT(pa_idxset_first(s->inputs, &idx)); j; j = PA_SINK_INPUT(pa_idxset_next(s->inputs, &idx))) {
  61         const char *role;
  62
  63         if (j == ignore)
  64             continue;
  65
  66         if (!(role = pa_proplist_gets(j->proplist, PA_PROP_MEDIA_ROLE)))
  67             continue;
  68
  69         if (pa_streq(role, "phone"))
  70             return TRUE;
  71     }
  72
  73     return FALSE;
  74 }
  75
  76 static void apply_cork(struct userdata *u, pa_sink *s, pa_sink_input *ignore, pa_bool_t cork) {
  77     pa_sink_input *j;
  78     uint32_t idx;
  79
  80     pa_assert(u);
  81     pa_sink_assert_ref(s);
  82
  83     for (j = PA_SINK_INPUT(pa_idxset_first(s->inputs, &idx)); j; j = PA_SINK_INPUT(pa_idxset_next(s->inputs, &idx))) {
  84         pa_bool_t corked;
  85         const char *role;
  86
  87         if (j == ignore)
  88             continue;
  89
  90         if (!(role = pa_proplist_gets(j->proplist, PA_PROP_MEDIA_ROLE)))
  91             continue;
  92
  93         if (!pa_streq(role, "video") &&
  94             !pa_streq(role, "music"))
  95             continue;
  96
  97         corked = !!pa_hashmap_get(u->cork_state, j);
  98
  99         if (cork && !corked) {
 100             pa_hashmap_put(u->cork_state, j, PA_INT_TO_PTR(1));
 101             pa_sink_input_set_mute(j, TRUE, FALSE);
 102             pa_sink_input_send_event(j, PA_STREAM_EVENT_REQUEST_CORK, NULL);
 103         } else if (!cork) {
 104             pa_hashmap_remove(u->cork_state, j);
 105
 106             if (corked) {
 107                 pa_sink_input_set_mute(j, FALSE, FALSE);
 108                 pa_sink_input_send_event(j, PA_STREAM_EVENT_REQUEST_UNCORK, NULL);
 109             }
 110         }
 111     }
 112 }
 113
 114 static pa_hook_result_t process(struct userdata *u, pa_sink_input *i, pa_bool_t create) {
 115     pa_bool_t cork = FALSE;
 116     const char *role;
 117
 118     pa_assert(u);
 119     pa_sink_input_assert_ref(i);
 120
 121     if (!create)
 122         pa_hashmap_remove(u->cork_state, i);
 123
 124     if (!(role = pa_proplist_gets(i->proplist, PA_PROP_MEDIA_ROLE)))
 125         return PA_HOOK_OK;
 126
 127     if (!pa_streq(role, "phone") &&
 128         !pa_streq(role, "music") &&
 129         !pa_streq(role, "video"))
 130         return PA_HOOK_OK;
 131
 132     cork = shall_cork(i->sink, create ? NULL : i);
 133     apply_cork(u, i->sink, create ? NULL : i, cork);
 134
 135     return PA_HOOK_OK;
 136 }
 137
 138 static pa_hook_result_t sink_input_put_cb(pa_core *core, pa_sink_input *i, struct userdata *u) {
 139     pa_core_assert_ref(core);
 140     pa_sink_input_assert_ref(i);
 141
 142     return process(u, i, TRUE);
 143 }
 144
 145 static pa_hook_result_t sink_input_unlink_cb(pa_core *core, pa_sink_input *i, struct userdata *u) {
 146     pa_sink_input_assert_ref(i);
 147
 148     return process(u, i, FALSE);
 149 }
 150
 151 static pa_hook_result_t sink_input_move_start_cb(pa_core *core, pa_sink_input *i, struct userdata *u) {
 152     pa_core_assert_ref(core);
 153     pa_sink_input_assert_ref(i);
 154
 155     return process(u, i, FALSE);
 156 }
 157
 158 static pa_hook_result_t sink_input_move_finish_cb(pa_core *core, pa_sink_input *i, struct userdata *u) {
 159     pa_core_assert_ref(core);
 160     pa_sink_input_assert_ref(i);
 161
 162     return process(u, i, TRUE);
 163 }
 164
 165 int pa__init(pa_module *m) {
 166     pa_modargs *ma = NULL;
 167     struct userdata *u;
 168
 169     pa_assert(m);
 170
 171     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
 172         pa_log("Failed to parse module arguments");
 173         goto fail;
 174     }
 175
 176     m->userdata = u = pa_xnew(struct userdata, 1);
 177
 178     u->core = m->core;
 179     u->cork_state = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
 180
 181     u->sink_input_put_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_PUT], PA_HOOK_LATE, (pa_hook_cb_t) sink_input_put_cb, u);
 182     u->sink_input_unlink_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_UNLINK], PA_HOOK_LATE, (pa_hook_cb_t) sink_input_unlink_cb, u);
 183     u->sink_input_move_start_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE_START], PA_HOOK_LATE, (pa_hook_cb_t) sink_input_move_start_cb, u);
 184     u->sink_input_move_finish_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE_FINISH], PA_HOOK_LATE, (pa_hook_cb_t) sink_input_move_finish_cb, u);
 185
 186     pa_modargs_free(ma);
 187
 188     return 0;
 189
 190 fail:
 191     pa__done(m);
 192
 193     if (ma)
 194         pa_modargs_free(ma);
 195
 196     return  -1;
 197
 198
 199 }
 200
 201 void pa__done(pa_module *m) {
 202     struct userdata* u;
 203
 204     pa_assert(m);
 205
 206     if (!(u = m->userdata))
 207         return;
 208
 209     if (u->sink_input_put_slot)
 210         pa_hook_slot_free(u->sink_input_put_slot);
 211     if (u->sink_input_unlink_slot)
 212         pa_hook_slot_free(u->sink_input_unlink_slot);
 213     if (u->sink_input_move_start_slot)
 214         pa_hook_slot_free(u->sink_input_move_start_slot);
 215     if (u->sink_input_move_finish_slot)
 216         pa_hook_slot_free(u->sink_input_move_finish_slot);
 217
 218     if (u->cork_state)
 219         pa_hashmap_free(u->cork_state, NULL, NULL);
 220
 221     pa_xfree(u);
 222
 223 }