4 This file is part of PulseAudio.
6 Copyright 2004-2006 Lennart Poettering
8 PulseAudio is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published
10 by the Free Software Foundation; either version 2 of the License,
11 or (at your option) any later version.
13 PulseAudio is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with PulseAudio; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
38 #include <pulse/xmalloc.h>
40 #include <pulsecore/core-error.h>
41 #include <pulsecore/iochannel.h>
42 #include <pulsecore/source.h>
43 #include <pulsecore/module.h>
44 #include <pulsecore/core-util.h>
45 #include <pulsecore/modargs.h>
46 #include <pulsecore/log.h>
48 #include "module-pipe-source-symdef.h"
50 PA_MODULE_AUTHOR("Lennart Poettering")
51 PA_MODULE_DESCRIPTION("UNIX pipe source")
52 PA_MODULE_VERSION(PACKAGE_VERSION)
54 "source_name=<name for the source> "
55 "file=<path of the FIFO> "
56 "format=<sample format> "
57 "channels=<number of channels> "
59 "channel_map=<channel map>")
61 #define DEFAULT_FIFO_NAME "/tmp/music.input"
62 #define DEFAULT_SOURCE_NAME "fifo_input"
75 static const char* const valid_modargs[] = {
85 static void do_read(struct userdata *u) {
90 if (!pa_iochannel_is_readable(u->io))
93 pa_module_set_used(u->module, pa_idxset_size(u->source->outputs));
95 if (!u->chunk.memblock) {
96 u->chunk.memblock = pa_memblock_new(u->core->mempool, PIPE_BUF);
97 u->chunk.index = chunk.length = 0;
100 assert(u->chunk.memblock && u->chunk.memblock->length > u->chunk.index);
101 if ((r = pa_iochannel_read(u->io, (uint8_t*) u->chunk.memblock->data + u->chunk.index, u->chunk.memblock->length - u->chunk.index)) <= 0) {
102 pa_log("read(): %s", pa_cstrerror(errno));
107 pa_source_post(u->source, &u->chunk);
110 if (u->chunk.index >= u->chunk.memblock->length) {
111 u->chunk.index = u->chunk.length = 0;
112 pa_memblock_unref(u->chunk.memblock);
113 u->chunk.memblock = NULL;
117 static void io_callback(PA_GCC_UNUSED pa_iochannel *io, void*userdata) {
118 struct userdata *u = userdata;
123 int pa__init(pa_core *c, pa_module*m) {
124 struct userdata *u = NULL;
130 pa_modargs *ma = NULL;
135 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
136 pa_log("failed to parse module arguments");
140 ss = c->default_sample_spec;
141 if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
142 pa_log("invalid sample format specification or channel map");
146 mkfifo(p = pa_modargs_get_value(ma, "file", DEFAULT_FIFO_NAME), 0777);
148 if ((fd = open(p, O_RDWR)) < 0) {
149 pa_log("open('%s'): %s", p, pa_cstrerror(errno));
153 pa_fd_set_cloexec(fd, 1);
155 if (fstat(fd, &st) < 0) {
156 pa_log("fstat('%s'): %s", p, pa_cstrerror(errno));
160 if (!S_ISFIFO(st.st_mode)) {
161 pa_log("'%s' is not a FIFO.", p);
165 u = pa_xmalloc0(sizeof(struct userdata));
167 u->filename = pa_xstrdup(p);
170 if (!(u->source = pa_source_new(c, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, &map))) {
171 pa_log("failed to create source.");
174 u->source->userdata = u;
175 pa_source_set_owner(u->source, m);
176 pa_source_set_description(u->source, t = pa_sprintf_malloc("Unix FIFO source '%s'", p));
179 u->io = pa_iochannel_new(c->mainloop, fd, -1);
181 pa_iochannel_set_callback(u->io, io_callback, u);
183 u->chunk.memblock = NULL;
184 u->chunk.index = u->chunk.length = 0;
205 void pa__done(pa_core *c, pa_module*m) {
209 if (!(u = m->userdata))
212 if (u->chunk.memblock)
213 pa_memblock_unref(u->chunk.memblock);
215 pa_source_disconnect(u->source);
216 pa_source_unref(u->source);
217 pa_iochannel_free(u->io);
221 pa_xfree(u->filename);