godot/thirdparty/libwebp/src/utils/quant_levels_utils.c

// Copyright 2011 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Quantize levels for specified number of quantization-levels ([2, 256]).
// Min and max values are preserved (usual 0 and 255 for alpha plane).
//
// Author: Skal ([email protected])

#include <assert.h>

#include "src/utils/quant_levels_utils.h"

#define NUM_SYMBOLS …

#define MAX_ITER …
#define ERROR_THRESHOLD …

// -----------------------------------------------------------------------------
// Quantize levels.

int QuantizeLevels(uint8_t* const data, int width, int height,
                   int num_levels, uint64_t* const sse) { … }