// Copyright 2013 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. // ----------------------------------------------------------------------------- // // Alpha plane de-quantization utility // // Author: Vikas Arora (vikasa@google.com)
// Apply post-processing to input 'data' of size 'width'x'height' assuming that // the source was quantized to a reduced number of levels. 'stride' is in bytes. // Strength is in [0..100] and controls the amount of dithering applied. // Returns false in case of error (data is NULL, invalid parameters, // malloc failure, ...). int WebPDequantizeLevels(uint8_t* const data, int width, int height, int stride, int strength);
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