gstreamer/ext/alsa/gstalsaplugin.c

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/*
* Copyright (C) 2001 CodeFactory AB
* Copyright (C) 2001 Thomas Nyberg <thomas@codefactory.se>
* Copyright (C) 2001-2002 Andy Wingo <apwingo@eos.ncsu.edu>
* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstalsasink.h"
#include "gstalsasrc.h"
#include "gstalsamixer.h"
GST_DEBUG_CATEGORY (alsa_debug);
/* ALSA debugging wrapper */
static void
gst_alsa_error_wrapper (const char *file, int line, const char *function,
int err, const char *fmt, ...)
{
#ifndef GST_DISABLE_GST_DEBUG
va_list args;
gchar *str;
va_start (args, fmt);
str = g_strdup_vprintf (fmt, args);
va_end (args);
/* FIXME: use GST_LEVEL_ERROR here? Currently warning is used because we're
* able to catch enough of the errors that would be printed otherwise
*/
gst_debug_log (alsa_debug, GST_LEVEL_WARNING, file, function, line, NULL,
"alsalib error: %s%s%s", str, err ? ": " : "",
err ? snd_strerror (err) : "");
g_free (str);
#endif
}
static gboolean
plugin_init (GstPlugin * plugin)
{
int err;
if (!gst_element_register (plugin, "alsamixer", GST_RANK_NONE,
GST_TYPE_ALSA_MIXER))
return FALSE;
if (!gst_element_register (plugin, "alsasrc", GST_RANK_NONE,
GST_TYPE_ALSA_SRC))
return FALSE;
if (!gst_element_register (plugin, "alsasink", GST_RANK_NONE,
GST_TYPE_ALSA_SINK))
return FALSE;
GST_DEBUG_CATEGORY_INIT (alsa_debug, "alsa", 0, "alsa plugins");
err = snd_lib_error_set_handler (gst_alsa_error_wrapper);
if (err != 0)
GST_WARNING ("failed to set alsa error handler");
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"alsa",
"ALSA plugin library",
plugin_init, VERSION, "LGPL", GST_PACKAGE, GST_ORIGIN)