michael@0: /*
michael@0:  * Copyright 2014 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: #ifndef SkDistanceFieldGen_DEFINED
michael@0: #define SkDistanceFieldGen_DEFINED
michael@0: 
michael@0: /** Given 8-bit mask data, generate the associated distance field
michael@0: 
michael@0:  *  @param distanceField     The distance field to be generated. Should already be allocated
michael@0:  *                           by the client with the padding below.
michael@0:  *  @param image             8-bit mask we're using to generate the distance field.
michael@0:  *  @param w                 Width of the image.
michael@0:  *  @param h                 Height of the image.
michael@0:  *  @param distanceMagnitude Largest possible absolute value for the distance. The distance field
michael@0:  *                           will be padded to w + 2*distanceMagnitude, h + 2*distanceMagnitude.
michael@0:  */
michael@0: bool SkGenerateDistanceFieldFromImage(unsigned char* distanceField,
michael@0:                                       const unsigned char* image,
michael@0:                                       int w, int h,
michael@0:                                       int distanceMagnitude);
michael@0: 
michael@0: #endif