| /* |
| * Copyright 2018 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkColorSpaceXformSteps_DEFINED |
| #define SkColorSpaceXformSteps_DEFINED |
| |
| #include "SkColorSpace.h" |
| #include "SkImageInfo.h" |
| |
| class SkRasterPipeline; |
| |
| struct SkColorSpaceXformSteps { |
| struct Flags { |
| bool unpremul; |
| bool linearize; |
| bool gamut_transform; |
| bool encode; |
| bool premul; |
| |
| uint32_t mask() const { |
| return (unpremul ? 1 : 0) |
| | (linearize ? 2 : 0) |
| | (gamut_transform ? 4 : 0) |
| | (encode ? 8 : 0) |
| | (premul ? 16 : 0); |
| } |
| }; |
| |
| SkColorSpaceXformSteps(SkColorSpace* src, SkAlphaType srcAT, |
| SkColorSpace* dst); |
| |
| static SkColorSpaceXformSteps UnpremulToUnpremul(SkColorSpace* src, SkColorSpace* dst) { |
| // The need to transform unpremul to unpremul comes up often enough that it's |
| // nice to centralize it here, especially because this use of kOpaque_SkAlphaType |
| // isn't the most intuitive. We basically want to always skip unpremul and premul. |
| return SkColorSpaceXformSteps(src, kOpaque_SkAlphaType, dst); |
| } |
| |
| void apply(float rgba[4]) const; |
| void apply(SkRasterPipeline*) const; |
| |
| Flags flags; |
| |
| bool srcTF_is_sRGB, |
| dstTF_is_sRGB; |
| SkColorSpaceTransferFn srcTF, // Apply for linearize. |
| dstTFInv; // Apply for encode. |
| float src_to_dst_matrix[9]; // Apply this 3x3 column-major matrix for gamut_transform. |
| }; |
| |
| #endif//SkColorSpaceXformSteps_DEFINED |