chromium/third_party/webrtc/modules/third_party/g711/g711.c

/*
 * SpanDSP - a series of DSP components for telephony
 *
 * g711.c - A-law and u-law transcoding routines
 *
 * Written by Steve Underwood <[email protected]>
 *
 * Copyright (C) 2006 Steve Underwood
 *
 *  Despite my general liking of the GPL, I place this code in the
 *  public domain for the benefit of all mankind - even the slimy
 *  ones who might try to proprietize my work and use it to my
 *  detriment.
 *
 * $Id: g711.c,v 1.1 2006/06/07 15:46:39 steveu Exp $
 *
 * Modifications for WebRtc, 2011/04/28, by tlegrand:
 * -Removed unused include files
 * -Changed to use WebRtc types
 * -Added option to run encoder bitexact with ITU-T reference implementation
 */

#include "modules/third_party/g711/g711.h"

/* Copied from the CCITT G.711 specification */
static const uint8_t ulaw_to_alaw_table[256] = …;

/* These transcoding tables are copied from the CCITT G.711 specification. To
   achieve optimal results, do not change them. */
static const uint8_t alaw_to_ulaw_table[256] = …;

uint8_t alaw_to_ulaw(uint8_t alaw) { … }

uint8_t ulaw_to_alaw(uint8_t ulaw) { … }