2 This file is part of PulseAudio.
4 Copyright 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 <sys/types.h>
32 #include <pulse/xmalloc.h>
33 #include <pulse/volume.h>
34 #include <pulse/channelmap.h>
36 #include <pulsecore/module.h>
37 #include <pulsecore/core-util.h>
38 #include <pulsecore/modargs.h>
39 #include <pulsecore/log.h>
40 #include <pulsecore/sink-input.h>
42 #include "module-position-event-sounds-symdef.h"
44 PA_MODULE_AUTHOR("Lennart Poettering");
45 PA_MODULE_DESCRIPTION("Position event sounds between L and R depending on the position on screen of the widget triggering them.");
46 PA_MODULE_VERSION(PACKAGE_VERSION);
47 PA_MODULE_LOAD_ONCE(TRUE);
49 static const char* const valid_modargs[] = {
54 pa_hook_slot *sink_input_fixate_hook_slot;
57 static int parse_pos(const char *pos, double *f) {
59 if (pa_atod(pos, f) < 0) {
60 pa_log_warn("Failed to parse hpos/vpos property '%s'.", pos);
64 if (*f < 0.0 || *f > 1.0) {
65 pa_log_debug("Property hpos/vpos out of range %0.2f", *f);
67 *f = PA_CLAMP(*f, 0.0, 1.0);
73 static pa_hook_result_t sink_input_fixate_hook_callback(pa_core *core, pa_sink_input_new_data *data, struct userdata *u) {
74 const char *hpos, *vpos, *role, *id;
76 char t[PA_CVOLUME_SNPRINT_MAX];
81 if (!(role = pa_proplist_gets(data->proplist, PA_PROP_MEDIA_ROLE)))
84 if (!pa_streq(role, "event"))
87 if ((id = pa_proplist_gets(data->proplist, PA_PROP_EVENT_ID))) {
89 /* The test sounds should never be positioned in space, since
90 * they might be triggered themselves to configure the speakers
91 * in space, which we don't want to mess up. */
93 if (pa_startswith(id, "audio-channel-"))
96 if (pa_streq(id, "audio-volume-change"))
99 if (pa_streq(id, "audio-test-signal"))
103 if (!(hpos = pa_proplist_gets(data->proplist, PA_PROP_EVENT_MOUSE_HPOS)))
104 hpos = pa_proplist_gets(data->proplist, PA_PROP_WINDOW_HPOS);
106 if (!(vpos = pa_proplist_gets(data->proplist, PA_PROP_EVENT_MOUSE_VPOS)))
107 vpos = pa_proplist_gets(data->proplist, PA_PROP_WINDOW_VPOS);
112 pa_cvolume_reset(&v, data->sink->sample_spec.channels);
115 if (parse_pos(hpos, &f) < 0)
118 if (pa_channel_map_can_balance(&data->sink->channel_map)) {
119 pa_log_debug("Positioning event sound '%s' horizontally at %0.2f.", pa_strnull(pa_proplist_gets(data->proplist, PA_PROP_EVENT_ID)), f);
120 pa_cvolume_set_balance(&v, &data->sink->channel_map, f*2.0-1.0);
125 if (parse_pos(vpos, &f) < 0)
128 if (pa_channel_map_can_fade(&data->sink->channel_map)) {
129 pa_log_debug("Positioning event sound '%s' vertically at %0.2f.", pa_strnull(pa_proplist_gets(data->proplist, PA_PROP_EVENT_ID)), f);
130 pa_cvolume_set_fade(&v, &data->sink->channel_map, f*2.0-1.0);
134 pa_log_debug("Final volume factor %s.", pa_cvolume_snprint(t, sizeof(t), &v));
135 pa_sink_input_new_data_apply_volume_factor_sink(data, &v);
140 int pa__init(pa_module*m) {
141 pa_modargs *ma = NULL;
146 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
147 pa_log("Failed to parse module arguments");
151 m->userdata = u = pa_xnew(struct userdata, 1);
152 u->sink_input_fixate_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_FIXATE], PA_HOOK_EARLY, (pa_hook_cb_t) sink_input_fixate_hook_callback, u);
167 void pa__done(pa_module*m) {
172 if (!(u = m->userdata))
175 if (u->sink_input_fixate_hook_slot)
176 pa_hook_slot_free(u->sink_input_fixate_hook_slot);