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 <polyp/xmalloc.h>
38 #include <polypcore/iochannel.h>
39 #include <polypcore/sink.h>
40 #include <polypcore/module.h>
41 #include <polypcore/util.h>
42 #include <polypcore/modargs.h>
43 #include <polypcore/log.h>
45 #include "module-pipe-sink-symdef.h"
47 PA_MODULE_AUTHOR("Lennart Poettering")
48 PA_MODULE_DESCRIPTION("UNIX pipe sink")
49 PA_MODULE_VERSION(PACKAGE_VERSION)
51 "sink_name=<name for the sink> "
52 "file=<path of the FIFO> "
53 "format=<sample format> "
54 "channels=<number of channels> "
56 "channel_map=<channel map>")
58 #define DEFAULT_FIFO_NAME "/tmp/music.output"
59 #define DEFAULT_SINK_NAME "fifo_output"
68 pa_defer_event *defer_event;
74 static const char* const valid_modargs[] = {
84 static void do_write(struct userdata *u) {
88 u->core->mainloop->defer_enable(u->defer_event, 0);
90 if (!pa_iochannel_is_writable(u->io))
93 pa_module_set_used(u->module, pa_idxset_size(u->sink->inputs) + pa_idxset_size(u->sink->monitor_source->outputs));
95 if (!u->memchunk.length)
96 if (pa_sink_render(u->sink, PIPE_BUF, &u->memchunk) < 0)
99 assert(u->memchunk.memblock && u->memchunk.length);
101 if ((r = pa_iochannel_write(u->io, (uint8_t*) u->memchunk.memblock->data + u->memchunk.index, u->memchunk.length)) < 0) {
102 pa_log(__FILE__": write() failed: %s", strerror(errno));
106 u->memchunk.index += r;
107 u->memchunk.length -= r;
109 if (u->memchunk.length <= 0) {
110 pa_memblock_unref(u->memchunk.memblock);
111 u->memchunk.memblock = NULL;
115 static void notify_cb(pa_sink*s) {
116 struct userdata *u = s->userdata;
119 if (pa_iochannel_is_writable(u->io))
120 u->core->mainloop->defer_enable(u->defer_event, 1);
123 static pa_usec_t get_latency_cb(pa_sink *s) {
124 struct userdata *u = s->userdata;
127 return u->memchunk.memblock ? pa_bytes_to_usec(u->memchunk.length, &s->sample_spec) : 0;
130 static void defer_callback(PA_GCC_UNUSED pa_mainloop_api *m, PA_GCC_UNUSED pa_defer_event*e, void *userdata) {
131 struct userdata *u = userdata;
136 static void io_callback(PA_GCC_UNUSED pa_iochannel *io, void*userdata) {
137 struct userdata *u = userdata;
142 int pa__init(pa_core *c, pa_module*m) {
143 struct userdata *u = NULL;
149 pa_modargs *ma = NULL;
152 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
153 pa_log(__FILE__": failed to parse module arguments");
157 ss = c->default_sample_spec;
158 if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
159 pa_log(__FILE__": invalid sample format specification");
163 mkfifo(p = pa_modargs_get_value(ma, "file", DEFAULT_FIFO_NAME), 0777);
165 if ((fd = open(p, O_RDWR)) < 0) {
166 pa_log(__FILE__": open('%s'): %s", p, strerror(errno));
170 pa_fd_set_cloexec(fd, 1);
172 if (fstat(fd, &st) < 0) {
173 pa_log(__FILE__": fstat('%s'): %s", p, strerror(errno));
177 if (!S_ISFIFO(st.st_mode)) {
178 pa_log(__FILE__": '%s' is not a FIFO.", p);
182 u = pa_xmalloc0(sizeof(struct userdata));
183 u->filename = pa_xstrdup(p);
188 if (!(u->sink = pa_sink_new(c, __FILE__, pa_modargs_get_value(ma, "sink_name", DEFAULT_SINK_NAME), 0, &ss, &map))) {
189 pa_log(__FILE__": failed to create sink.");
192 u->sink->notify = notify_cb;
193 u->sink->get_latency = get_latency_cb;
194 u->sink->userdata = u;
195 pa_sink_set_owner(u->sink, m);
196 u->sink->description = pa_sprintf_malloc("Unix FIFO sink '%s'", p);
197 assert(u->sink->description);
199 u->io = pa_iochannel_new(c->mainloop, -1, fd);
201 pa_iochannel_set_callback(u->io, io_callback, u);
203 u->memchunk.memblock = NULL;
204 u->memchunk.length = 0;
206 u->defer_event = c->mainloop->defer_new(c->mainloop, defer_callback, u);
207 assert(u->defer_event);
208 c->mainloop->defer_enable(u->defer_event, 0);
226 void pa__done(pa_core *c, pa_module*m) {
230 if (!(u = m->userdata))
233 if (u->memchunk.memblock)
234 pa_memblock_unref(u->memchunk.memblock);
236 pa_sink_disconnect(u->sink);
237 pa_sink_unref(u->sink);
238 pa_iochannel_free(u->io);
239 u->core->mainloop->defer_free(u->defer_event);
243 pa_xfree(u->filename);