MDFEchoCancellationConfig.h

/* Copyright (C) 2003-2008 Jean-Marc Valin
 * Copyright (C) 2024 Phil Schatzmann (Header-only adaptation)
 *
 * Echo canceller configuration constants
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * 3. The name of the author may not be used to endorse or promote products
 * derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
 
#pragma once
 
#include <cstdint>
 
namespace audio_tools {
 
// ============================================================================
// Feature Flags
// ============================================================================
 
#define FIXED_POINT  // Disabled - floating-point mode is currently supported
 
#define TWO_PATH
 
// ============================================================================
// Echo Canceller Tuning Parameters
// ============================================================================
 
 
#define PLAYBACK_DELAY 2
 
// ============================================================================
// Mathematical Constants
// ============================================================================
 
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
 
// ============================================================================
// Floating Point Mode Constants
// ============================================================================
 
#ifdef FIXED_POINT
 
#define FLOAT_ZERO {0, 0}
 
#define FLOAT_ONE {32767, 0}
 
#define FLOAT_HALF {16384, 0}
 
#else
 
#define FLOAT_ZERO 0.f
 
#define FLOAT_ONE 1.f
 
#define FLOAT_HALF 0.5f
 
#endif  // FIXED_POINT
 
}  // namespace audio_tools