Mike Klein | 6968f9c | 2018-05-24 12:33:23 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #ifndef SkColorSpaceXformSteps_DEFINED |
| 9 | #define SkColorSpaceXformSteps_DEFINED |
| 10 | |
| 11 | #include "SkColorSpace.h" |
| 12 | #include "SkImageInfo.h" |
| 13 | |
Mike Klein | b82edcc | 2018-07-10 18:25:03 +0000 | [diff] [blame^] | 14 | class SkRasterPipeline; |
| 15 | |
Mike Klein | 6968f9c | 2018-05-24 12:33:23 -0400 | [diff] [blame] | 16 | struct SkColorSpaceXformSteps { |
Brian Osman | f018b7d | 2018-06-13 17:21:19 -0400 | [diff] [blame] | 17 | struct Flags { |
| 18 | bool unpremul; |
| 19 | bool linearize; |
| 20 | bool gamut_transform; |
| 21 | bool encode; |
| 22 | bool premul; |
| 23 | |
| 24 | uint32_t mask() const { |
| 25 | return (unpremul ? 1 : 0) |
| 26 | | (linearize ? 2 : 0) |
| 27 | | (gamut_transform ? 4 : 0) |
| 28 | | (encode ? 8 : 0) |
| 29 | | (premul ? 16 : 0); |
| 30 | } |
| 31 | }; |
| 32 | |
Mike Klein | 6968f9c | 2018-05-24 12:33:23 -0400 | [diff] [blame] | 33 | SkColorSpaceXformSteps(SkColorSpace* src, SkAlphaType srcAT, |
| 34 | SkColorSpace* dst); |
| 35 | |
Mike Klein | 2f2a703 | 2018-06-05 12:24:55 -0400 | [diff] [blame] | 36 | static SkColorSpaceXformSteps UnpremulToUnpremul(SkColorSpace* src, SkColorSpace* dst) { |
| 37 | // The need to transform unpremul to unpremul comes up often enough that it's |
| 38 | // nice to centralize it here, especially because this use of kOpaque_SkAlphaType |
| 39 | // isn't the most intuitive. We basically want to always skip unpremul and premul. |
| 40 | return SkColorSpaceXformSteps(src, kOpaque_SkAlphaType, dst); |
| 41 | } |
| 42 | |
Brian Osman | f018b7d | 2018-06-13 17:21:19 -0400 | [diff] [blame] | 43 | void apply(float rgba[4]) const; |
Mike Klein | b82edcc | 2018-07-10 18:25:03 +0000 | [diff] [blame^] | 44 | void apply(SkRasterPipeline*) const; |
Brian Osman | f018b7d | 2018-06-13 17:21:19 -0400 | [diff] [blame] | 45 | |
| 46 | Flags flags; |
Mike Klein | 6968f9c | 2018-05-24 12:33:23 -0400 | [diff] [blame] | 47 | |
Mike Klein | 34ab0f2 | 2018-05-30 11:07:47 -0400 | [diff] [blame] | 48 | SkColorSpaceTransferFn srcTF, // Apply for linearize. |
| 49 | dstTFInv; // Apply for encode. |
Brian Osman | f018b7d | 2018-06-13 17:21:19 -0400 | [diff] [blame] | 50 | float src_to_dst_matrix[9]; // Apply this 3x3 column-major matrix for gamut_transform. |
Mike Klein | 6968f9c | 2018-05-24 12:33:23 -0400 | [diff] [blame] | 51 | }; |
| 52 | |
Mike Klein | 6968f9c | 2018-05-24 12:33:23 -0400 | [diff] [blame] | 53 | #endif//SkColorSpaceXformSteps_DEFINED |