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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 #ifndef SkDistanceFieldGen_DEFINED | 7 #ifndef SkDistanceFieldGen_DEFINED |
8 #define SkDistanceFieldGen_DEFINED | 8 #define SkDistanceFieldGen_DEFINED |
9 | 9 |
10 #include "SkTypes.h" | 10 #include "SkTypes.h" |
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28 | 28 |
29 * @param distanceField The distance field to be generated. Should already
be allocated | 29 * @param distanceField The distance field to be generated. Should already
be allocated |
30 * by the client with the padding above. | 30 * by the client with the padding above. |
31 * @param image 8-bit mask we're using to generate the distance fie
ld. | 31 * @param image 8-bit mask we're using to generate the distance fie
ld. |
32 * @param w Width of the original image. | 32 * @param w Width of the original image. |
33 * @param h Height of the original image. | 33 * @param h Height of the original image. |
34 * @param rowBytes Size of each row in the image, in bytes | 34 * @param rowBytes Size of each row in the image, in bytes |
35 */ | 35 */ |
36 bool SkGenerateDistanceFieldFromA8Image(unsigned char* distanceField, | 36 bool SkGenerateDistanceFieldFromA8Image(unsigned char* distanceField, |
37 const unsigned char* image, | 37 const unsigned char* image, |
38 int w, int h, int rowBytes); | 38 int w, int h, size_t rowBytes); |
39 | 39 |
40 /** Given 1-bit mask data, generate the associated distance field | 40 /** Given 1-bit mask data, generate the associated distance field |
41 | 41 |
42 * @param distanceField The distance field to be generated. Should already
be allocated | 42 * @param distanceField The distance field to be generated. Should already
be allocated |
43 * by the client with the padding above. | 43 * by the client with the padding above. |
44 * @param image 1-bit mask we're using to generate the distance fie
ld. | 44 * @param image 1-bit mask we're using to generate the distance fie
ld. |
45 * @param w Width of the original image. | 45 * @param w Width of the original image. |
46 * @param h Height of the original image. | 46 * @param h Height of the original image. |
47 * @param rowBytes Size of each row in the image, in bytes | 47 * @param rowBytes Size of each row in the image, in bytes |
48 */ | 48 */ |
49 bool SkGenerateDistanceFieldFromBWImage(unsigned char* distanceField, | 49 bool SkGenerateDistanceFieldFromBWImage(unsigned char* distanceField, |
50 const unsigned char* image, | 50 const unsigned char* image, |
51 int w, int h, int rowBytes); | 51 int w, int h, size_t rowBytes); |
52 | 52 |
53 /** Given width and height of original image, return size (in bytes) of distance
field | 53 /** Given width and height of original image, return size (in bytes) of distance
field |
54 * @param w Width of the original image. | 54 * @param w Width of the original image. |
55 * @param h Height of the original image. | 55 * @param h Height of the original image. |
56 */ | 56 */ |
57 inline size_t SkComputeDistanceFieldSize(int w, int h) { | 57 inline size_t SkComputeDistanceFieldSize(int w, int h) { |
58 return (w + 2*SK_DistanceFieldPad) * (h + 2*SK_DistanceFieldPad) * sizeof(un
signed char); | 58 return (w + 2*SK_DistanceFieldPad) * (h + 2*SK_DistanceFieldPad) * sizeof(un
signed char); |
59 } | 59 } |
60 | 60 |
61 #endif | 61 #endif |
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