gst_plugins_good/gst/law/alaw.c
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 16 Apr 2010 15:15:52 +0300
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/* GStreamer PCM/A-Law conversions
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 *
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 * This library is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Library General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Library General Public License for more details.
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 *
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 * You should have received a copy of the GNU Library General Public
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 * License along with this library; if not, write to the
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 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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 * Boston, MA 02111-1307, USA.
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 */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "alaw-encode.h"
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#include "alaw-decode.h"
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GstStaticPadTemplate alaw_dec_src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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    GST_PAD_SRC,
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    GST_PAD_ALWAYS,
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    GST_STATIC_CAPS ("audio/x-raw-int, "
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        "rate = (int) [ 8000, 192000 ], "
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        "channels = (int) [ 1, 2 ], "
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        "endianness = (int) BYTE_ORDER, "
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        "width = (int) 16, " "depth = (int) 16, " "signed = (boolean) True")
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    );
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GstStaticPadTemplate alaw_dec_sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
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    GST_PAD_SINK,
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    GST_PAD_ALWAYS,
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    GST_STATIC_CAPS ("audio/x-alaw, "
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        "rate = [ 8000 , 192000 ], " "channels = [ 1 , 2 ]")
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    );
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GstStaticPadTemplate alaw_enc_sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
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    GST_PAD_SINK,
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    GST_PAD_ALWAYS,
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    GST_STATIC_CAPS ("audio/x-raw-int, "
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        "rate = (int) [ 8000, 192000 ], "
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        "channels = (int) [ 1, 2 ], "
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        "endianness = (int) BYTE_ORDER, "
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        "width = (int) 16, " "depth = (int) 16, " "signed = (boolean) True")
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    );
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GstStaticPadTemplate alaw_enc_src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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    GST_PAD_SRC,
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    GST_PAD_ALWAYS,
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    GST_STATIC_CAPS ("audio/x-alaw, "
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        "rate = [ 8000 , 192000 ], " "channels = [ 1 , 2 ]")
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    );
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static gboolean
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plugin_init (GstPlugin * plugin)
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{
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  if (!gst_element_register (plugin, "alawenc",
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          GST_RANK_NONE, GST_TYPE_ALAW_ENC) ||
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      !gst_element_register (plugin, "alawdec",
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          GST_RANK_PRIMARY, GST_TYPE_ALAW_DEC))
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    return FALSE;
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  return TRUE;
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}
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/* FIXME 0.11: merge alaw and mulaw into one plugin? */
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GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
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    GST_VERSION_MINOR,
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    "alaw",
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    "ALaw audio conversion routines",
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    plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
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EXPORT_C GstPluginDesc* _GST_PLUGIN_DESC()
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{
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	return &gst_plugin_desc;
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}