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
29 #include <sys/types.h>
34 #include <pulse/xmalloc.h>
35 #include <pulse/volume.h>
36 #include <pulse/channelmap.h>
38 #include <pulsecore/core-error.h>
39 #include <pulsecore/module.h>
40 #include <pulsecore/core-util.h>
41 #include <pulsecore/modargs.h>
42 #include <pulsecore/log.h>
43 #include <pulsecore/sink-input.h>
45 #include "module-position-event-sounds-symdef.h"
47 PA_MODULE_AUTHOR("Lennart Poettering");
48 PA_MODULE_DESCRIPTION("Position event sounds between L and R depending on the position on screen of the widget triggering them.");
49 PA_MODULE_VERSION(PACKAGE_VERSION);
50 PA_MODULE_LOAD_ONCE(TRUE);
52 static const char* const valid_modargs[] = {
57 pa_hook_slot *sink_input_fixate_hook_slot;
60 static int parse_pos(const char *pos, double *f) {
62 if (pa_atod(pos, f) < 0) {
63 pa_log_warn("Failed to parse hpos/vpos property '%s'.", pos);
67 if (*f < 0.0 || *f > 1.0) {
68 pa_log_debug("Property hpos/vpos out of range %0.2f", *f);
70 *f = PA_CLAMP(*f, 0.0, 1.0);
76 static pa_hook_result_t sink_input_fixate_hook_callback(pa_core *core, pa_sink_input_new_data *data, struct userdata *u) {
77 const char *hpos, *vpos, *role, *id;
79 char t[PA_CVOLUME_SNPRINT_MAX];
84 if (!(role = pa_proplist_gets(data->proplist, PA_PROP_MEDIA_ROLE)))
87 if (!pa_streq(role, "event"))
90 if ((id = pa_proplist_gets(data->proplist, PA_PROP_EVENT_ID))) {
92 /* The test sounds should never be positioned in space, since
93 * they might be trigered themselves to configure the speakers
94 * in space, which we don't want to mess up. */
96 if (pa_startswith(id, "audio-channel-"))
99 if (pa_streq(id, "audio-volume-change"))
102 if (pa_streq(id, "audio-test-signal"))
106 if (!(hpos = pa_proplist_gets(data->proplist, PA_PROP_EVENT_MOUSE_HPOS)))
107 hpos = pa_proplist_gets(data->proplist, PA_PROP_WINDOW_HPOS);
109 if (!(vpos = pa_proplist_gets(data->proplist, PA_PROP_EVENT_MOUSE_VPOS)))
110 vpos = pa_proplist_gets(data->proplist, PA_PROP_WINDOW_VPOS);
115 pa_cvolume_reset(&v, data->sink->sample_spec.channels);
118 if (parse_pos(hpos, &f) < 0)
121 if (pa_channel_map_can_balance(&data->sink->channel_map)) {
122 pa_log_debug("Positioning event sound '%s' horizontally at %0.2f.", pa_strnull(pa_proplist_gets(data->proplist, PA_PROP_EVENT_ID)), f);
123 pa_cvolume_set_balance(&v, &data->sink->channel_map, f*2.0-1.0);
128 if (parse_pos(vpos, &f) < 0)
131 if (pa_channel_map_can_fade(&data->sink->channel_map)) {
132 pa_log_debug("Positioning event sound '%s' vertically at %0.2f.", pa_strnull(pa_proplist_gets(data->proplist, PA_PROP_EVENT_ID)), f);
133 pa_cvolume_set_fade(&v, &data->sink->channel_map, f*2.0-1.0);
137 pa_log_debug("Final volume factor %s.", pa_cvolume_snprint(t, sizeof(t), &v));
138 pa_sink_input_new_data_apply_volume_factor_sink(data, &v);
143 int pa__init(pa_module*m) {
144 pa_modargs *ma = NULL;
149 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
150 pa_log("Failed to parse module arguments");
154 m->userdata = u = pa_xnew(struct userdata, 1);
155 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);
170 void pa__done(pa_module*m) {
175 if (!(u = m->userdata))
178 if (u->sink_input_fixate_hook_slot)
179 pa_hook_slot_free(u->sink_input_fixate_hook_slot);