| // 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) |
| |
| #ifndef WEBP_UTILS_QUANT_LEVELS_DEC_H_ |
| #define WEBP_UTILS_QUANT_LEVELS_DEC_H_ |
| |
| #include "../webp/types.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| // Apply post-processing to input 'data' of size 'width'x'height' assuming that |
| // the source was quantized to a reduced number of levels. |
| // 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 strength); |
| |
| #ifdef __cplusplus |
| } // extern "C" |
| #endif |
| |
| #endif /* WEBP_UTILS_QUANT_LEVELS_DEC_H_ */ |
