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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkColorLookUpTable_DEFINED
#define SkColorLookUpTable_DEFINED
#include "SkNx.h"
#include "SkRefCnt.h"
#include "SkTemplates.h"
// TODO: scope inside SkColorLookUpTable
static constexpr uint8_t kMaxColorChannels = 4;
class SkColorLookUpTable : public SkRefCnt {
public:
static constexpr uint8_t kOutputChannels = 3;
SkColorLookUpTable(uint8_t inputChannels, const uint8_t limits[]);
int inputChannels() const { return fInputChannels; }
int outputChannels() const { return kOutputChannels; }
// TODO: Rename to somethingBetter(int)?
int gridPoints(int dimension) const {
SkASSERT(dimension >= 0 && dimension < inputChannels());
return fLimits[dimension];
}
// Objects of this type are created in a custom fashion using sk_malloc_throw
// and therefore must be sk_freed.
void* operator new(size_t size) = delete;
void* operator new(size_t, void* p) { return p; }
void operator delete(void* p) { sk_free(p); }
const float* table() const {
return SkTAddOffset<const float>(this, sizeof(SkColorLookUpTable));
}
private:
uint8_t fInputChannels;
uint8_t fLimits[kMaxColorChannels];
};
#endif
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