4 This file is part of polypaudio.
6 polypaudio 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.
11 polypaudio 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 polypaudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
36 #include <polypcore/iochannel.h>
37 #include <polypcore/sink.h>
38 #include <polypcore/module.h>
39 #include <polypcore/util.h>
40 #include <polypcore/modargs.h>
41 #include <polypcore/xmalloc.h>
42 #include <polypcore/log.h>
44 #include "module-null-sink-symdef.h"
46 PA_MODULE_AUTHOR("Lennart Poettering")
47 PA_MODULE_DESCRIPTION("Clocked NULL sink")
48 PA_MODULE_VERSION(PACKAGE_VERSION)
50 "format=<sample format> "
51 "channels=<number of channels> "
53 "sink_name=<name of sink>"
54 "channel_map=<channel map>")
56 #define DEFAULT_SINK_NAME "null"
62 pa_time_event *time_event;
66 static const char* const valid_modargs[] = {
75 static void time_callback(pa_mainloop_api *m, pa_time_event*e, const struct timeval *tv, void *userdata) {
76 struct userdata *u = userdata;
78 struct timeval ntv = *tv;
83 if (pa_sink_render(u->sink, u->block_size, &chunk) >= 0) {
85 pa_memblock_unref(chunk.memblock);
89 pa_timeval_add(&ntv, pa_bytes_to_usec(l, &u->sink->sample_spec));
90 m->time_restart(e, &ntv);
93 int pa__init(pa_core *c, pa_module*m) {
94 struct userdata *u = NULL;
97 pa_modargs *ma = NULL;
101 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
102 pa_log(__FILE__": failed to parse module arguments.");
106 ss = c->default_sample_spec;
107 if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map) < 0) {
108 pa_log(__FILE__": invalid sample format specification or channel map.");
112 u = pa_xmalloc0(sizeof(struct userdata));
117 if (!(u->sink = pa_sink_new(c, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, &map))) {
118 pa_log(__FILE__": failed to create sink.");
122 u->sink->userdata = u;
123 pa_sink_set_owner(u->sink, m);
124 u->sink->description = pa_sprintf_malloc("NULL sink");
126 pa_gettimeofday(&tv);
127 u->time_event = c->mainloop->time_new(c->mainloop, &tv, time_callback, u);
129 u->block_size = pa_bytes_per_second(&ss) / 10;
144 void pa__done(pa_core *c, pa_module*m) {
148 if (!(u = m->userdata))
151 pa_sink_disconnect(u->sink);
152 pa_sink_unref(u->sink);
154 u->core->mainloop->time_free(u->time_event);