gstreamer/gst/law/alaw.c
2011-09-06 13:16:27 +02:00

79 lines
2.5 KiB
C

/* GStreamer PCM/A-Law conversions
*
* 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 2.1 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "alaw-encode.h"
#include "alaw-decode.h"
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
#define INT_FORMAT "S16LE"
#else
#define INT_FORMAT "S16BE"
#endif
GstStaticPadTemplate alaw_dec_src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw, "
"format = (string) " INT_FORMAT ", "
"rate = (int) [ 8000, 192000 ], " "channels = (int) [ 1, 2 ]")
);
GstStaticPadTemplate alaw_dec_sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-alaw, "
"rate = [ 8000 , 192000 ], " "channels = [ 1 , 2 ]")
);
GstStaticPadTemplate alaw_enc_sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw, "
"format = (string) " INT_FORMAT ", "
"rate = (int) [ 8000, 192000 ], " "channels = (int) [ 1, 2 ]")
);
GstStaticPadTemplate alaw_enc_src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-alaw, "
"rate = [ 8000 , 192000 ], " "channels = [ 1 , 2 ]")
);
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_element_register (plugin, "alawenc",
GST_RANK_PRIMARY, GST_TYPE_ALAW_ENC) ||
!gst_element_register (plugin, "alawdec",
GST_RANK_PRIMARY, GST_TYPE_ALAW_DEC))
return FALSE;
return TRUE;
}
/* FIXME 0.11: merge alaw and mulaw into one plugin? */
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"alaw",
"ALaw audio conversion routines",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)