1 // Copyright 2013 Google Inc. All Rights Reserved. 2 // 3 // This code is licensed under the same terms as WebM: 4 // Software License Agreement: http://www.webmproject.org/license/software/ 5 // Additional IP Rights Grant: http://www.webmproject.org/license/additional/ 6 // ----------------------------------------------------------------------------- 7 // 8 // Alpha plane de-quantization utility 9 // 10 // Author: Vikas Arora (vikasa@google.com) 11 12 #ifndef WEBP_UTILS_QUANT_LEVELS_DEC_H_ 13 #define WEBP_UTILS_QUANT_LEVELS_DEC_H_ 14 15 #include "webp/types.h" 16 17 #if defined(__cplusplus) || defined(c_plusplus) 18 extern "C" { 19 #endif 20 21 // Apply post-processing to input 'data' of size 'width'x'height' assuming 22 // that the source was quantized to a reduced number of levels. 23 // Returns false in case of error (data is NULL, invalid parameters, ...). 24 int DequantizeLevels(uint8_t* const data, int width, int height); 25 26 #if defined(__cplusplus) || defined(c_plusplus) 27 } // extern "C" 28 #endif 29 30 #endif /* WEBP_UTILS_QUANT_LEVELS_DEC_H_ */ 31