blob: 36b742a27ae742aeb423cc0af4543db74eeeb905 [file] [log] [blame]
* 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 SkMipmapAccessor_DEFINED
#define SkMipmapAccessor_DEFINED
#include "include/core/SkBitmap.h"
#include "include/core/SkImage.h"
#include "include/core/SkMatrix.h"
#include "src/core/SkMipmap.h"
#include <tuple>
class SkImage_Base;
class SkMipmapAccessor : ::SkNoncopyable {
// Returns null on failure
static SkMipmapAccessor* Make(SkArenaAlloc*, const SkImage*, const SkMatrix& inv, SkMipmapMode);
std::pair<SkPixmap, SkMatrix> level() const {
SkASSERT(fUpper.addr() != nullptr);
return std::make_pair(fUpper, fUpperInv);
std::pair<SkPixmap, SkMatrix> lowerLevel() const {
SkASSERT(fLower.addr() != nullptr);
return std::make_pair(fLower, fLowerInv);
// 0....1. Will be 0 if there is no lowerLevel
float lowerWeight() const { return fLowerWeight; }
SkPixmap fUpper,
fLower; // only valid for mip_linear
float fLowerWeight; // lower * weight + upper * (1 - weight)
SkMatrix fUpperInv,
// these manage lifetime for the buffers
SkBitmap fBaseStorage;
sk_sp<const SkMipmap> fCurrMip;
// Don't call publicly -- this is only public for SkArenaAlloc to access it inside Make()
SkMipmapAccessor(const SkImage_Base*, const SkMatrix& inv, SkMipmapMode requestedMode);