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
;
58 static int parse_pos(const char *pos
, double *f
) {
60 if (pa_atod(pos
, f
) < 0) {
61 pa_log_warn("Failed to parse hpos/vpos property '%s'.", pos
);
65 if (*f
< 0.0 || *f
> 1.0) {
66 pa_log_debug("Property hpos/vpos out of range %0.2f", *f
);
68 *f
= PA_CLAMP(*f
, 0.0, 1.0);
74 static pa_hook_result_t
sink_input_fixate_hook_callback(pa_core
*core
, pa_sink_input_new_data
*data
, struct userdata
*u
) {
75 const char *hpos
, *vpos
, *role
, *id
;
77 char t
[PA_CVOLUME_SNPRINT_VERBOSE_MAX
];
82 if (!(role
= pa_proplist_gets(data
->proplist
, PA_PROP_MEDIA_ROLE
)))
85 if (!pa_streq(role
, "event"))
88 if ((id
= pa_proplist_gets(data
->proplist
, PA_PROP_EVENT_ID
))) {
90 /* The test sounds should never be positioned in space, since
91 * they might be triggered themselves to configure the speakers
92 * in space, which we don't want to mess up. */
94 if (pa_startswith(id
, "audio-channel-"))
97 if (pa_streq(id
, "audio-volume-change"))
100 if (pa_streq(id
, "audio-test-signal"))
104 if (!(hpos
= pa_proplist_gets(data
->proplist
, PA_PROP_EVENT_MOUSE_HPOS
)))
105 hpos
= pa_proplist_gets(data
->proplist
, PA_PROP_WINDOW_HPOS
);
107 if (!(vpos
= pa_proplist_gets(data
->proplist
, PA_PROP_EVENT_MOUSE_VPOS
)))
108 vpos
= pa_proplist_gets(data
->proplist
, PA_PROP_WINDOW_VPOS
);
113 pa_cvolume_reset(&v
, data
->sink
->sample_spec
.channels
);
116 if (parse_pos(hpos
, &f
) < 0)
119 if (pa_channel_map_can_balance(&data
->sink
->channel_map
)) {
120 pa_log_debug("Positioning event sound '%s' horizontally at %0.2f.", pa_strnull(pa_proplist_gets(data
->proplist
, PA_PROP_EVENT_ID
)), f
);
121 pa_cvolume_set_balance(&v
, &data
->sink
->channel_map
, f
*2.0-1.0);
126 if (parse_pos(vpos
, &f
) < 0)
129 if (pa_channel_map_can_fade(&data
->sink
->channel_map
)) {
130 pa_log_debug("Positioning event sound '%s' vertically at %0.2f.", pa_strnull(pa_proplist_gets(data
->proplist
, PA_PROP_EVENT_ID
)), f
);
131 pa_cvolume_set_fade(&v
, &data
->sink
->channel_map
, f
*2.0-1.0);
135 pa_log_debug("Final volume factor %s.",
136 pa_cvolume_snprint_verbose(t
,
139 &data
->sink
->channel_map
,
140 data
->sink
->flags
& PA_SINK_DECIBEL_VOLUME
));
141 pa_sink_input_new_data_add_volume_factor_sink(data
, u
->name
, &v
);
146 int pa__init(pa_module
*m
) {
147 pa_modargs
*ma
= NULL
;
152 if (!(ma
= pa_modargs_new(m
->argument
, valid_modargs
))) {
153 pa_log("Failed to parse module arguments");
157 m
->userdata
= u
= pa_xnew(struct userdata
, 1);
158 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
);
174 void pa__done(pa_module
*m
) {
179 if (!(u
= m
->userdata
))
182 if (u
->sink_input_fixate_hook_slot
)
183 pa_hook_slot_free(u
->sink_input_fixate_hook_slot
);