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

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7
   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.
  12
  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.
  17
  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
  21   USA.
  22 ***/
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include <unistd.h>
  29 #include <string.h>
  30 #include <errno.h>
  31
  32 #include <pulsecore/core-error.h>
  33 #include <pulsecore/module.h>
  34 #include <pulsecore/modargs.h>
  35 #include <pulsecore/core-util.h>
  36 #include <pulsecore/log.h>
  37
  38 #include "module-esound-compat-spawnfd-symdef.h"
  39
  40 PA_MODULE_AUTHOR("Lennart Poettering");
  41 PA_MODULE_DESCRIPTION("ESOUND compatibility module: -spawnfd emulation");
  42 PA_MODULE_LOAD_ONCE(TRUE);
  43 PA_MODULE_VERSION(PACKAGE_VERSION);
  44 PA_MODULE_USAGE("fd=<file descriptor>");
  45
  46 static const char* const valid_modargs[] = {
  47     "fd",
  48     NULL,
  49 };
  50
  51 int pa__init(pa_module*m) {
  52     pa_modargs *ma = NULL;
  53     int ret = -1, fd = -1;
  54     char x = 1;
  55
  56     pa_assert(m);
  57
  58     if (!(ma = pa_modargs_new(m->argument, valid_modargs)) ||
  59         pa_modargs_get_value_s32(ma, "fd", &fd) < 0 ||
  60         fd < 0) {
  61
  62         pa_log("Failed to parse module arguments");
  63         goto finish;
  64     }
  65
  66     if (pa_loop_write(fd, &x, sizeof(x), NULL) != sizeof(x))
  67         pa_log_warn("write(%u, 1, 1) failed: %s", fd, pa_cstrerror(errno));
  68
  69     pa_assert_se(pa_close(fd) == 0);
  70
  71     pa_module_unload_request(m);
  72
  73     ret = 0;
  74
  75 finish:
  76     if (ma)
  77         pa_modargs_free(ma);
  78
  79     return ret;
  80 }