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/*
* 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, 1].
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); }
Sk4f alphas() const; // argb -> aaaa, generally faster than the equivalent Sk4f(this->a()).
// 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>(); }
SkPMColor round() const; // Rounds from [0.0f, 1.0f] to [0, 255], clamping if out of range.
bool isValid() const {
return this->a() >= 0 && this->a() <= 1
&& 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_SSE2
#include "../opts/SkPMFloat_sse.h"
#elif defined(SK_ARM_HAS_NEON)
#include "../opts/SkPMFloat_neon.h"
#else
#include "../opts/SkPMFloat_none.h"
#endif
#endif
#endif//SkPM_DEFINED
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