github.com/cellofellow/gopkg@v0.0.0-20140722061823-eec0544a62ad/image/webp/libwebp/src/utils/quant_levels_dec.h (about)

     1  // Copyright 2013 Google Inc. All Rights Reserved.
     2  //
     3  // Use of this source code is governed by a BSD-style license
     4  // that can be found in the COPYING file in the root of the source
     5  // tree. An additional intellectual property rights grant can be found
     6  // in the file PATENTS. All contributing project authors may
     7  // be found in the AUTHORS file in the root of the source tree.
     8  // -----------------------------------------------------------------------------
     9  //
    10  // Alpha plane de-quantization utility
    11  //
    12  // Author:  Vikas Arora (vikasa@google.com)
    13  
    14  #ifndef WEBP_UTILS_QUANT_LEVELS_DEC_H_
    15  #define WEBP_UTILS_QUANT_LEVELS_DEC_H_
    16  
    17  #include "../webp/types.h"
    18  
    19  #ifdef __cplusplus
    20  extern "C" {
    21  #endif
    22  
    23  // Apply post-processing to input 'data' of size 'width'x'height' assuming that
    24  // the source was quantized to a reduced number of levels. The post-processing
    25  // will be applied to 'num_rows' rows of 'data' starting from 'row'.
    26  // Returns false in case of error (data is NULL, invalid parameters, ...).
    27  int DequantizeLevels(uint8_t* const data, int width, int height,
    28                       int row, int num_rows);
    29  
    30  #ifdef __cplusplus
    31  }    // extern "C"
    32  #endif
    33  
    34  #endif  /* WEBP_UTILS_QUANT_LEVELS_DEC_H_ */