4 This file is part of PulseAudio.
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 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
36 #include <pulse/xmalloc.h>
38 #include <pulsecore/core-error.h>
39 #include <pulsecore/iochannel.h>
40 #include <pulsecore/source.h>
41 #include <pulsecore/module.h>
42 #include <pulsecore/core-util.h>
43 #include <pulsecore/modargs.h>
44 #include <pulsecore/log.h>
46 #include "module-pipe-source-symdef.h"
48 PA_MODULE_AUTHOR("Lennart Poettering")
49 PA_MODULE_DESCRIPTION("UNIX pipe source")
50 PA_MODULE_VERSION(PACKAGE_VERSION)
52 "source_name=<name for the source> "
53 "file=<path of the FIFO> "
54 "format=<sample format> "
55 "channels=<number of channels> "
57 "channel_map=<channel map>")
59 #define DEFAULT_FIFO_NAME "/tmp/music.input"
60 #define DEFAULT_SOURCE_NAME "fifo_input"
73 static const char* const valid_modargs[] = {
83 static void do_read(struct userdata *u) {
88 if (!pa_iochannel_is_readable(u->io))
91 pa_module_set_used(u->module, pa_idxset_size(u->source->outputs));
93 if (!u->chunk.memblock) {
94 u->chunk.memblock = pa_memblock_new(u->core->mempool, PIPE_BUF);
95 u->chunk.index = chunk.length = 0;
98 assert(u->chunk.memblock && u->chunk.memblock->length > u->chunk.index);
99 if ((r = pa_iochannel_read(u->io, (uint8_t*) u->chunk.memblock->data + u->chunk.index, u->chunk.memblock->length - u->chunk.index)) <= 0) {
100 pa_log(__FILE__": read(): %s", pa_cstrerror(errno));
105 pa_source_post(u->source, &u->chunk);
108 if (u->chunk.index >= u->chunk.memblock->length) {
109 u->chunk.index = u->chunk.length = 0;
110 pa_memblock_unref(u->chunk.memblock);
111 u->chunk.memblock = NULL;
115 static void io_callback(PA_GCC_UNUSED pa_iochannel *io, void*userdata) {
116 struct userdata *u = userdata;
121 int pa__init(pa_core *c, pa_module*m) {
122 struct userdata *u = NULL;
128 pa_modargs *ma = NULL;
133 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
134 pa_log(__FILE__": failed to parse module arguments");
138 ss = c->default_sample_spec;
139 if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
140 pa_log(__FILE__": invalid sample format specification or channel map");
144 mkfifo(p = pa_modargs_get_value(ma, "file", DEFAULT_FIFO_NAME), 0777);
146 if ((fd = open(p, O_RDWR)) < 0) {
147 pa_log(__FILE__": open('%s'): %s", p, pa_cstrerror(errno));
151 pa_fd_set_cloexec(fd, 1);
153 if (fstat(fd, &st) < 0) {
154 pa_log(__FILE__": fstat('%s'): %s", p, pa_cstrerror(errno));
158 if (!S_ISFIFO(st.st_mode)) {
159 pa_log(__FILE__": '%s' is not a FIFO.", p);
163 u = pa_xmalloc0(sizeof(struct userdata));
165 u->filename = pa_xstrdup(p);
168 if (!(u->source = pa_source_new(c, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, &map))) {
169 pa_log(__FILE__": failed to create source.");
172 u->source->userdata = u;
173 pa_source_set_owner(u->source, m);
174 pa_source_set_description(u->source, t = pa_sprintf_malloc("Unix FIFO source '%s'", p));
177 u->io = pa_iochannel_new(c->mainloop, fd, -1);
179 pa_iochannel_set_callback(u->io, io_callback, u);
181 u->chunk.memblock = NULL;
182 u->chunk.index = u->chunk.length = 0;
203 void pa__done(pa_core *c, pa_module*m) {
207 if (!(u = m->userdata))
210 if (u->chunk.memblock)
211 pa_memblock_unref(u->chunk.memblock);
213 pa_source_disconnect(u->source);
214 pa_source_unref(u->source);
215 pa_iochannel_free(u->io);
219 pa_xfree(u->filename);