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Open Source Computer Vision Library
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35 lines
1.2 KiB
35 lines
1.2 KiB
// Copyright 2013 Google Inc. All Rights Reserved. |
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// |
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// Use of this source code is governed by a BSD-style license |
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// that can be found in the COPYING file in the root of the source |
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// tree. An additional intellectual property rights grant can be found |
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// in the file PATENTS. All contributing project authors may |
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// be found in the AUTHORS file in the root of the source tree. |
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// ----------------------------------------------------------------------------- |
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// |
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// Alpha plane de-quantization utility |
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// |
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// Author: Vikas Arora (vikasa@google.com) |
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#ifndef WEBP_UTILS_QUANT_LEVELS_DEC_H_ |
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#define WEBP_UTILS_QUANT_LEVELS_DEC_H_ |
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#include "../webp/types.h" |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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// Apply post-processing to input 'data' of size 'width'x'height' assuming that |
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// the source was quantized to a reduced number of levels. 'stride' is in bytes. |
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// Strength is in [0..100] and controls the amount of dithering applied. |
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// Returns false in case of error (data is NULL, invalid parameters, |
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// malloc failure, ...). |
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int WebPDequantizeLevels(uint8_t* const data, int width, int height, int stride, |
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int strength); |
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#ifdef __cplusplus |
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} // extern "C" |
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#endif |
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#endif /* WEBP_UTILS_QUANT_LEVELS_DEC_H_ */
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