89c909efee
This is an Android request for our public headers,
much like warning about unused parameters. See bug.
In general I've made two kinds of source changes:
1) more commonly, explicitly cast to the type which
is being implicitly cast to at head;
2) less commonly, flip signedness of a value we're
storing to match how it's used more smoothly.
Much of this is self inflicted inconsistent use of size_t, unsigned,
int, int32_t, uint32_t, etc. SkTArray is particularly tricky because
of its std::vector half-compatibility. E.g. resize() takes size_t,
but operator[] takes int. ¯\_(ツ)_/¯
Bug: skia:9847
Change-Id: I64626a529e1662b3d3020bc03d477fc641eda544
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/293436
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
150 lines
5.9 KiB
C
150 lines
5.9 KiB
C
/*
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* Copyright 2017 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkImageInfoPriv_DEFINED
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#define SkImageInfoPriv_DEFINED
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#include "include/core/SkColor.h"
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#include "include/core/SkImageInfo.h"
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static inline uint32_t SkColorTypeChannelFlags(SkColorType ct) {
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switch (ct) {
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case kUnknown_SkColorType: return 0;
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case kAlpha_8_SkColorType: return kAlpha_SkColorChannelFlag;
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case kRGB_565_SkColorType: return kRGB_SkColorChannelFlags;
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case kARGB_4444_SkColorType: return kRGBA_SkColorChannelFlags;
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case kRGBA_8888_SkColorType: return kRGBA_SkColorChannelFlags;
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case kRGB_888x_SkColorType: return kRGB_SkColorChannelFlags;
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case kBGRA_8888_SkColorType: return kRGBA_SkColorChannelFlags;
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case kRGBA_1010102_SkColorType: return kRGBA_SkColorChannelFlags;
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case kRGB_101010x_SkColorType: return kRGB_SkColorChannelFlags;
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case kBGRA_1010102_SkColorType: return kRGBA_SkColorChannelFlags;
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case kBGR_101010x_SkColorType: return kRGB_SkColorChannelFlags;
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case kGray_8_SkColorType: return kGray_SkColorChannelFlag;
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case kRGBA_F16Norm_SkColorType: return kRGBA_SkColorChannelFlags;
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case kRGBA_F16_SkColorType: return kRGBA_SkColorChannelFlags;
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case kRGBA_F32_SkColorType: return kRGBA_SkColorChannelFlags;
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case kR8G8_unorm_SkColorType: return kRG_SkColorChannelFlags;
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case kA16_unorm_SkColorType: return kAlpha_SkColorChannelFlag;
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case kR16G16_unorm_SkColorType: return kRG_SkColorChannelFlags;
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case kA16_float_SkColorType: return kAlpha_SkColorChannelFlag;
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case kR16G16_float_SkColorType: return kRG_SkColorChannelFlags;
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case kR16G16B16A16_unorm_SkColorType: return kRGBA_SkColorChannelFlags;
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}
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SkUNREACHABLE;
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}
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static inline bool SkColorTypeIsAlphaOnly(SkColorType ct) {
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return SkColorTypeChannelFlags(ct) == kAlpha_SkColorChannelFlag;
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}
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static inline bool SkAlphaTypeIsValid(unsigned value) {
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return value <= kLastEnum_SkAlphaType;
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}
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static int SkColorTypeShiftPerPixel(SkColorType ct) {
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switch (ct) {
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case kUnknown_SkColorType: return 0;
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case kAlpha_8_SkColorType: return 0;
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case kRGB_565_SkColorType: return 1;
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case kARGB_4444_SkColorType: return 1;
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case kRGBA_8888_SkColorType: return 2;
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case kRGB_888x_SkColorType: return 2;
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case kBGRA_8888_SkColorType: return 2;
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case kRGBA_1010102_SkColorType: return 2;
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case kRGB_101010x_SkColorType: return 2;
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case kBGRA_1010102_SkColorType: return 2;
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case kBGR_101010x_SkColorType: return 2;
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case kGray_8_SkColorType: return 0;
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case kRGBA_F16Norm_SkColorType: return 3;
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case kRGBA_F16_SkColorType: return 3;
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case kRGBA_F32_SkColorType: return 4;
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case kR8G8_unorm_SkColorType: return 1;
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case kA16_unorm_SkColorType: return 1;
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case kR16G16_unorm_SkColorType: return 2;
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case kA16_float_SkColorType: return 1;
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case kR16G16_float_SkColorType: return 2;
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case kR16G16B16A16_unorm_SkColorType: return 3;
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}
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SkUNREACHABLE;
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}
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static inline size_t SkColorTypeMinRowBytes(SkColorType ct, int width) {
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return (size_t)(width * SkColorTypeBytesPerPixel(ct));
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}
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static inline bool SkColorTypeIsValid(unsigned value) {
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return value <= kLastEnum_SkColorType;
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}
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static inline size_t SkColorTypeComputeOffset(SkColorType ct, int x, int y, size_t rowBytes) {
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if (kUnknown_SkColorType == ct) {
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return 0;
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}
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return (size_t)y * rowBytes + ((size_t)x << SkColorTypeShiftPerPixel(ct));
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}
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static inline bool SkColorTypeIsNormalized(SkColorType ct) {
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switch (ct) {
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case kUnknown_SkColorType:
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case kAlpha_8_SkColorType:
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case kRGB_565_SkColorType:
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case kARGB_4444_SkColorType:
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case kRGBA_8888_SkColorType:
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case kRGB_888x_SkColorType:
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case kBGRA_8888_SkColorType:
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case kRGBA_1010102_SkColorType:
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case kRGB_101010x_SkColorType:
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case kBGRA_1010102_SkColorType:
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case kBGR_101010x_SkColorType:
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case kGray_8_SkColorType:
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case kRGBA_F16Norm_SkColorType:
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case kR8G8_unorm_SkColorType:
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case kA16_unorm_SkColorType:
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case kA16_float_SkColorType: /*subtle... alpha is always [0,1]*/
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case kR16G16_unorm_SkColorType:
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case kR16G16B16A16_unorm_SkColorType: return true;
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case kRGBA_F16_SkColorType:
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case kRGBA_F32_SkColorType:
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case kR16G16_float_SkColorType: return false;
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}
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SkUNREACHABLE;
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}
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/**
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* Returns true if |info| contains a valid colorType and alphaType.
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*/
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static inline bool SkColorInfoIsValid(const SkColorInfo& info) {
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return info.colorType() != kUnknown_SkColorType && info.alphaType() != kUnknown_SkAlphaType;
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}
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/**
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* Returns true if |info| contains a valid combination of width, height and colorInfo.
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*/
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static inline bool SkImageInfoIsValid(const SkImageInfo& info) {
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if (info.width() <= 0 || info.height() <= 0) {
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return false;
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}
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const int kMaxDimension = SK_MaxS32 >> 2;
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if (info.width() > kMaxDimension || info.height() > kMaxDimension) {
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return false;
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}
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return SkColorInfoIsValid(info.colorInfo());
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}
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/**
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* Returns true if Skia has defined a pixel conversion from the |src| to the |dst|.
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* Returns false otherwise.
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*/
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static inline bool SkImageInfoValidConversion(const SkImageInfo& dst, const SkImageInfo& src) {
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return SkImageInfoIsValid(dst) && SkImageInfoIsValid(src);
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}
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#endif // SkImageInfoPriv_DEFINED
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