code.delx.au - pulseaudio/blob - polyp/module-esound-compat-spawnfd.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of polypaudio.
   5
   6   polypaudio is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU 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.
  10
  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.
  15
  16   You should have received a copy of the GNU 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
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <unistd.h>
  27 #include <assert.h>
  28 #include <string.h>
  29 #include <errno.h>
  30
  31 #include "module.h"
  32 #include "util.h"
  33 #include "modargs.h"
  34 #include "log.h"
  35
  36 PA_MODULE_AUTHOR("Lennart Poettering")
  37 PA_MODULE_DESCRIPTION("ESOUND compatibility module: -spawnfd emulation")
  38 PA_MODULE_USAGE("fd=<file descriptor>")
  39 PA_MODULE_VERSION(PACKAGE_VERSION)
  40
  41 static const char* const valid_modargs[] = {
  42     "fd",
  43     NULL,
  44 };
  45
  46 int pa__init(struct pa_core *c, struct pa_module*m) {
  47     struct pa_modargs *ma = NULL;
  48     int ret = -1, fd = -1;
  49     char x = 1;
  50     assert(c && m);
  51
  52     if (!(ma = pa_modargs_new(m->argument, valid_modargs)) ||
  53         pa_modargs_get_value_s32(ma, "fd", &fd) < 0 ||
  54         fd < 0) {
  55         pa_log(__FILE__": Failed to parse module arguments\n");
  56         goto finish;
  57     }
  58
  59     if (pa_loop_write(fd, &x, sizeof(x)) != sizeof(x))
  60         pa_log(__FILE__": WARNING: write(%u, 1, 1) failed: %s\n", fd, strerror(errno));
  61
  62     close(fd);
  63
  64     pa_module_unload_request(m);
  65
  66     ret = 0;
  67
  68 finish:
  69     if (ma)
  70         pa_modargs_free(ma);
  71
  72     return ret;
  73 }
  74
  75 void pa__done(struct pa_core *c, struct pa_module*m) {
  76     assert(c && m);
  77 }
  78
  79