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- /*
- * Copyright 2019 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #ifndef GrDataUtils_DEFINED
- #define GrDataUtils_DEFINED
- #include "include/core/SkColor.h"
- #include "include/private/GrTypesPriv.h"
- #include "src/gpu/GrColorSpaceInfo.h"
- #include "src/gpu/GrSwizzle.h"
- size_t GrCompressedDataSize(SkImage::CompressionType, int w, int h);
- // Compute the size of the buffer required to hold all the mipLevels of the specified type
- // of data when all rowBytes are tight.
- // Note there may still be padding between the mipLevels to meet alignment requirements.
- size_t GrComputeTightCombinedBufferSize(size_t bytesPerPixel, int baseWidth, int baseHeight,
- SkTArray<size_t>* individualMipOffsets, int mipLevelCount);
- void GrFillInData(GrPixelConfig, int baseWidth, int baseHeight,
- const SkTArray<size_t>& individualMipOffsets, char* dest, const SkColor4f& color);
- void GrFillInCompressedData(SkImage::CompressionType, int width, int height, char* dest,
- const SkColor4f& color);
- class GrPixelInfo {
- public:
- GrPixelInfo() = default;
- // not explicit
- GrPixelInfo(const SkImageInfo& info)
- : fColorInfo(SkColorTypeToGrColorType(info.colorType()), info.alphaType(),
- info.refColorSpace())
- , fWidth(info.width())
- , fHeight(info.height()) {}
- GrPixelInfo(GrColorType ct, SkAlphaType at, sk_sp<SkColorSpace> cs, int w, int h)
- : fColorInfo(ct, at, std::move(cs)), fWidth(w), fHeight(h) {}
- GrPixelInfo(const GrPixelInfo&) = default;
- GrPixelInfo(GrPixelInfo&&) = default;
- GrPixelInfo& operator=(const GrPixelInfo&) = default;
- GrPixelInfo& operator=(GrPixelInfo&&) = default;
- GrPixelInfo makeColorType(GrColorType ct) {
- return {ct, this->alphaType(), this->refColorSpace(), this->width(), this->height()};
- }
- GrPixelInfo makeAlphaType(SkAlphaType at) {
- return {this->colorType(), at, this->refColorSpace(), this->width(), this->height()};
- }
- GrPixelInfo makeWH(int width, int height) {
- return {this->colorType(), this->alphaType(), this->refColorSpace(), width, height};
- }
- GrColorType colorType() const { return fColorInfo.colorType(); }
- SkAlphaType alphaType() const { return fColorInfo.alphaType(); }
- SkColorSpace* colorSpace() const { return fColorInfo.colorSpace(); }
- sk_sp<SkColorSpace> refColorSpace() const { return fColorInfo.refColorSpace(); }
- int width() const { return fWidth; }
- int height() const { return fHeight; }
- size_t bpp() const { return GrColorTypeBytesPerPixel(this->colorType()); }
- size_t minRowBytes() const { return this->bpp() * this->width(); }
- /**
- * Place this pixel rect in a surface of dimensions surfaceWidth x surfaceHeight size offset at
- * surfacePt and then clip the pixel rectangle to the bounds of the surface. If the pixel rect
- * does not intersect the rectangle or is empty then return false. If clipped, the input
- * surfacePt, the width/height of this GrPixelInfo, and the data pointer will be modified to
- * reflect the clipped rectangle.
- */
- template <typename T>
- bool clip(int surfaceWidth, int surfaceHeight, SkIPoint* surfacePt, T** data, size_t rowBytes) {
- auto bounds = SkIRect::MakeWH(surfaceWidth, surfaceHeight);
- auto rect = SkIRect::MakeXYWH(surfacePt->fX, surfacePt->fY, fWidth, fHeight);
- if (!rect.intersect(bounds)) {
- return false;
- }
- *data = SkTAddOffset<T>(*data, (rect.fTop - surfacePt->fY) * rowBytes +
- (rect.fLeft - surfacePt->fX) * this->bpp());
- surfacePt->fX = rect.fLeft;
- surfacePt->fY = rect.fTop;
- fWidth = rect.width();
- fHeight = rect.height();
- return true;
- }
- bool isValid() const { return fColorInfo.isValid() && fWidth > 0 && fHeight > 0; }
- private:
- GrColorSpaceInfo fColorInfo = {};
- int fWidth = 0;
- int fHeight = 0;
- };
- // Swizzle param is applied after loading and before converting from srcInfo to dstInfo.
- bool GrConvertPixels(const GrPixelInfo& dstInfo, void* dst, size_t dstRB,
- const GrPixelInfo& srcInfo, const void* src, size_t srcRB,
- bool flipY = false, GrSwizzle swizzle = GrSwizzle{});
- #endif
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