| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkPM_DEFINED |
| #define SkPM_DEFINED |
| |
| #include "SkTypes.h" |
| #include "SkColor.h" |
| #include "SkColorPriv.h" |
| #include "SkNx.h" |
| |
| // A pre-multiplied color storing each component in the same order as SkPMColor, |
| // but as a float in the range [0, 255]. |
| class SkPMFloat : public Sk4f { |
| public: |
| static SkPMFloat FromPMColor(SkPMColor c) { return SkPMFloat(c); } |
| static SkPMFloat FromARGB(float a, float r, float g, float b) { return SkPMFloat(a,r,g,b); } |
| |
| // May be more efficient than one at a time. No special alignment assumed for SkPMColors. |
| static void From4PMColors(const SkPMColor[4], SkPMFloat*, SkPMFloat*, SkPMFloat*, SkPMFloat*); |
| |
| // Uninitialized. |
| SkPMFloat() {} |
| explicit SkPMFloat(SkPMColor); |
| SkPMFloat(float a, float r, float g, float b) |
| #ifdef SK_PMCOLOR_IS_RGBA |
| : INHERITED(r,g,b,a) {} |
| #else |
| : INHERITED(b,g,r,a) {} |
| #endif |
| |
| SkPMFloat(const Sk4f& fs) : INHERITED(fs) {} |
| |
| float a() const { return this->kth<SK_A32_SHIFT / 8>(); } |
| float r() const { return this->kth<SK_R32_SHIFT / 8>(); } |
| float g() const { return this->kth<SK_G32_SHIFT / 8>(); } |
| float b() const { return this->kth<SK_B32_SHIFT / 8>(); } |
| |
| // N.B. All methods returning an SkPMColor call SkPMColorAssert on that result before returning. |
| |
| // round() and roundClamp() round component values to the nearest integer. |
| SkPMColor round() const; // Assumes all values in [0, 255]. Some implementations may clamp. |
| SkPMColor roundClamp() const; // Will clamp all values to [0, 255]. |
| |
| // Like round(), but truncates instead of rounding. |
| // The domain of this function is (-1.0f, 256.0f). Values in (-1.0f, 0.0f] trunc to a zero. |
| SkPMColor trunc() const; |
| |
| // 4-at-a-time versions of round() and roundClamp(). Like From4PMColors(), no alignment assumed. |
| static void RoundTo4PMColors( |
| const SkPMFloat&, const SkPMFloat&, const SkPMFloat&, const SkPMFloat&, SkPMColor[4]); |
| static void RoundClampTo4PMColors( |
| const SkPMFloat&, const SkPMFloat&, const SkPMFloat&, const SkPMFloat&, SkPMColor[4]); |
| |
| bool isValid() const { |
| return this->a() >= 0 && this->a() <= 255 |
| && this->r() >= 0 && this->r() <= this->a() |
| && this->g() >= 0 && this->g() <= this->a() |
| && this->b() >= 0 && this->b() <= this->a(); |
| } |
| |
| private: |
| typedef Sk4f INHERITED; |
| }; |
| |
| #ifdef SKNX_NO_SIMD |
| // Platform implementations of SkPMFloat assume Sk4f uses SSE or NEON. _none is generic. |
| #include "../opts/SkPMFloat_none.h" |
| #else |
| #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3 |
| #include "../opts/SkPMFloat_SSSE3.h" |
| #elif SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2 |
| #include "../opts/SkPMFloat_SSE2.h" |
| #elif defined(SK_ARM_HAS_NEON) |
| #include "../opts/SkPMFloat_neon.h" |
| #else |
| #include "../opts/SkPMFloat_none.h" |
| #endif |
| #endif |
| |
| #endif//SkPM_DEFINED |