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/source.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-source-symdef.h"
47 PA_MODULE_AUTHOR("Lennart Poettering")
48 PA_MODULE_DESCRIPTION("UNIX pipe source")
49 PA_MODULE_VERSION(PACKAGE_VERSION)
51 "source_name=<name for the source> "
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.input"
59 #define DEFAULT_SOURCE_NAME "fifo_input"
72 static const char* const valid_modargs[] = {
82 static void do_read(struct userdata *u) {
87 if (!pa_iochannel_is_readable(u->io))
90 pa_module_set_used(u->module, pa_idxset_size(u->source->outputs));
92 if (!u->chunk.memblock) {
93 u->chunk.memblock = pa_memblock_new(1024, u->core->memblock_stat);
94 u->chunk.index = chunk.length = 0;
97 assert(u->chunk.memblock && u->chunk.memblock->length > u->chunk.index);
98 if ((r = pa_iochannel_read(u->io, (uint8_t*) u->chunk.memblock->data + u->chunk.index, u->chunk.memblock->length - u->chunk.index)) <= 0) {
99 pa_log(__FILE__": read() failed: %s", strerror(errno));
104 pa_source_post(u->source, &u->chunk);
107 if (u->chunk.index >= u->chunk.memblock->length) {
108 u->chunk.index = u->chunk.length = 0;
109 pa_memblock_unref(u->chunk.memblock);
110 u->chunk.memblock = NULL;
114 static void io_callback(PA_GCC_UNUSED pa_iochannel *io, void*userdata) {
115 struct userdata *u = userdata;
120 int pa__init(pa_core *c, pa_module*m) {
121 struct userdata *u = NULL;
127 pa_modargs *ma = NULL;
130 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
131 pa_log(__FILE__": failed to parse module arguments");
135 ss = c->default_sample_spec;
136 if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
137 pa_log(__FILE__": invalid sample format specification or channel map");
141 mkfifo(p = pa_modargs_get_value(ma, "file", DEFAULT_FIFO_NAME), 0777);
143 if ((fd = open(p, O_RDWR)) < 0) {
144 pa_log(__FILE__": open('%s'): %s", p, strerror(errno));
148 pa_fd_set_cloexec(fd, 1);
150 if (fstat(fd, &st) < 0) {
151 pa_log(__FILE__": fstat('%s'): %s", p, strerror(errno));
155 if (!S_ISFIFO(st.st_mode)) {
156 pa_log(__FILE__": '%s' is not a FIFO.", p);
160 u = pa_xmalloc0(sizeof(struct userdata));
162 u->filename = pa_xstrdup(p);
165 if (!(u->source = pa_source_new(c, __FILE__, pa_modargs_get_value(ma, "source_name", DEFAULT_SOURCE_NAME), 0, &ss, &map))) {
166 pa_log(__FILE__": failed to create source.");
169 u->source->userdata = u;
170 pa_source_set_owner(u->source, m);
171 u->source->description = pa_sprintf_malloc("Unix FIFO source '%s'", p);
172 assert(u->source->description);
174 u->io = pa_iochannel_new(c->mainloop, fd, -1);
176 pa_iochannel_set_callback(u->io, io_callback, u);
178 u->chunk.memblock = NULL;
179 u->chunk.index = u->chunk.length = 0;
200 void pa__done(pa_core *c, pa_module*m) {
204 if (!(u = m->userdata))
207 if (u->chunk.memblock)
208 pa_memblock_unref(u->chunk.memblock);
210 pa_source_disconnect(u->source);
211 pa_source_unref(u->source);
212 pa_iochannel_free(u->io);
216 pa_xfree(u->filename);