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/* G711adecode.c
* A-law G.711 codec
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later*/
#include "config.h"
#include <glib.h>
#include "G711adecode.h"
#include "G711atable.h"
#include "ws_attributes.h"
void *
codec_g711a_init(void)
{
return NULL;
}
void
codec_g711a_release(void *ctx _U_)
{
}
unsigned
codec_g711a_get_channels(void *ctx _U_)
{
return 1;
}
unsigned
codec_g711a_get_frequency(void *ctx _U_)
{
return 8000;
}
size_t
codec_g711a_decode(void *ctx _U_, const void *input, size_t inputSizeBytes, void *output,
size_t *outputSizeBytes)
{
const guint8 *dataIn = (const guint8 *) input;
gint16 *dataOut = (gint16 *) output;
size_t i;
if (!output || !outputSizeBytes) {
return inputSizeBytes * 2;
}
for (i = 0; i < inputSizeBytes; i++)
{
dataOut[i] = alaw_exp_table[dataIn[i]];
}
*outputSizeBytes = inputSizeBytes * 2;
return inputSizeBytes * 2;
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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