godot/thirdparty/libwebp/src/utils/filters_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.
// -----------------------------------------------------------------------------
//
// filter estimation
//
// Author: Urvang ([email protected])

#include "src/utils/filters_utils.h"
#include <stdlib.h>
#include <string.h>

// -----------------------------------------------------------------------------
// Quick estimate of a potentially interesting filter mode to try.

#define SMAX …
#define SDIFF …

static WEBP_INLINE int GradientPredictor(uint8_t a, uint8_t b, uint8_t c) { … }

WEBP_FILTER_TYPE WebPEstimateBestFilter(const uint8_t* data,
                                        int width, int height, int stride) { … }

#undef SMAX
#undef SDIFF

//------------------------------------------------------------------------------