'../tests/ImageDecodingTest.cpp',
'../tests/ImageFilterTest.cpp',
'../tests/ImageGeneratorTest.cpp',
- '../tests/ImageInfoTest.cpp',
'../tests/ImageIsOpaqueTest.cpp',
'../tests/ImageNewShaderTest.cpp',
'../tests/InfRectTest.cpp',
* Describe an image's dimensions and pixel type.
*/
struct SkImageInfo {
-public:
- SkImageInfo() {}
-
int fWidth;
int fHeight;
SkColorType fColorType;
SkAlphaType fAlphaType;
-private:
- enum Profile {
- kUnknown_Profile,
- kSRGB_Profile,
- kExponential_Profile,
- };
-
- uint32_t fProfile;
- float fGamma;
-
- SkImageInfo(int width, int height, SkColorType ct, SkAlphaType at, Profile p, float g)
- : fWidth(width)
- , fHeight(height)
- , fColorType(ct)
- , fAlphaType(at)
- , fProfile(p)
- , fGamma(g)
- {}
-
-public:
- /*
- * Return an info with the specified attributes, tagged as sRGB. Note that if the requested
- * color type does not make sense with sRGB (e.g. kAlpha_8) then the sRGB request is ignored.
- *
- * You can call isSRGB() on the returned info to determine if the request was fulfilled.
- */
- static SkImageInfo MakeSRGB(int width, int height, SkColorType ct, SkAlphaType at);
-
- /*
- * Return an info with the specified attributes, tagged with a specific gamma.
- * Note that if the requested gamma is unsupported for the requested color type, then the gamma
- * value will be set to 1.0 (the default).
- *
- * You can call gamma() to query the resulting gamma value.
- */
- static SkImageInfo MakeWithGamma(int width, int height, SkColorType ct, SkAlphaType at,
- float gamma);
-
static SkImageInfo Make(int width, int height, SkColorType ct, SkAlphaType at) {
- return MakeWithGamma(width, height, ct, at, 1);
+ SkImageInfo info = {
+ width, height, ct, at
+ };
+ return info;
}
/**
* Sets colortype to the native ARGB32 type.
*/
static SkImageInfo MakeN32(int width, int height, SkAlphaType at) {
- return SkImageInfo(width, height, kN32_SkColorType, at, kExponential_Profile, 1);
+ SkImageInfo info = {
+ width, height, kN32_SkColorType, at
+ };
+ return info;
}
/**
* Sets colortype to the native ARGB32 type, and the alphatype to premul.
*/
static SkImageInfo MakeN32Premul(int width, int height) {
- return SkImageInfo(width, height, kN32_SkColorType, kPremul_SkAlphaType,
- kExponential_Profile, 1);
+ SkImageInfo info = {
+ width, height, kN32_SkColorType, kPremul_SkAlphaType
+ };
+ return info;
}
/**
}
static SkImageInfo MakeA8(int width, int height) {
- return SkImageInfo(width, height, kAlpha_8_SkColorType, kPremul_SkAlphaType,
- kUnknown_Profile, 0);
+ SkImageInfo info = {
+ width, height, kAlpha_8_SkColorType, kPremul_SkAlphaType
+ };
+ return info;
}
static SkImageInfo MakeUnknown(int width, int height) {
- return SkImageInfo(width, height, kUnknown_SkColorType, kIgnore_SkAlphaType,
- kUnknown_Profile, 0);
+ SkImageInfo info = {
+ width, height, kUnknown_SkColorType, kIgnore_SkAlphaType
+ };
+ return info;
}
static SkImageInfo MakeUnknown() {
- return SkImageInfo(0, 0, kUnknown_SkColorType, kIgnore_SkAlphaType, kUnknown_Profile, 0);
+ SkImageInfo info = {
+ 0, 0, kUnknown_SkColorType, kIgnore_SkAlphaType
+ };
+ return info;
}
int width() const { return fWidth; }
return 0 != memcmp(this, &other, sizeof(other));
}
- // DEPRECATED : use the static Unflatten
void unflatten(SkReadBuffer&);
void flatten(SkWriteBuffer&) const;
-
- static SkImageInfo Unflatten(SkReadBuffer&);
int64_t getSafeSize64(size_t rowBytes) const {
if (0 == fHeight) {
}
SkDEBUGCODE(void validate() const;)
-
- /**
- * If the Info was tagged to be sRGB, return true, else return false.
- */
- bool isSRGB() const { return kSRGB_Profile == fProfile; }
-
- /**
- * If this was tagged with an explicit gamma value, return that value, else return 0.
- * If this was tagged as sRGB, return 0.
- */
- float gamma() const { return fGamma; }
};
#endif
#include "SkReadBuffer.h"
#include "SkWriteBuffer.h"
-static bool color_type_supports_sRGB(SkColorType colorType) {
- switch (colorType) {
- case kRGBA_8888_SkColorType:
- case kBGRA_8888_SkColorType:
- return true;
- default:
- return false;
- }
+static bool alpha_type_is_valid(SkAlphaType alphaType) {
+ return (alphaType >= 0) && (alphaType <= kLastEnum_SkAlphaType);
}
-static bool color_type_supports_gamma(SkColorType colorType) {
- switch (colorType) {
- case kRGBA_8888_SkColorType:
- case kBGRA_8888_SkColorType:
- // case kLuminance ...
- return true;
- default:
- return false;
- }
+static bool color_type_is_valid(SkColorType colorType) {
+ return (colorType >= 0) && (colorType <= kLastEnum_SkColorType);
}
-static float pin_gamma_to_legal(float gamma) {
- if (!SkScalarIsFinite(gamma)) {
- return 1;
- }
- // these limits are just made up -- feel free to change them within reason
- const float min_gamma = 0.01f;
- const float max_gamma = 4.0;
- return SkScalarPin(gamma, min_gamma, max_gamma);
-}
+void SkImageInfo::unflatten(SkReadBuffer& buffer) {
+ fWidth = buffer.read32();
+ fHeight = buffer.read32();
-SkImageInfo SkImageInfo::MakeSRGB(int width, int height, SkColorType ct, SkAlphaType at) {
- Profile p = color_type_supports_sRGB(ct) ? kSRGB_Profile : kUnknown_Profile;
- return SkImageInfo(width, height, ct, at, p, 0);
+ uint32_t packed = buffer.read32();
+ SkASSERT(0 == (packed >> 16));
+ fAlphaType = (SkAlphaType)((packed >> 8) & 0xFF);
+ fColorType = (SkColorType)((packed >> 0) & 0xFF);
+ buffer.validate(alpha_type_is_valid(fAlphaType) &&
+ color_type_is_valid(fColorType));
}
-SkImageInfo SkImageInfo::MakeWithGamma(int width, int height, SkColorType ct, SkAlphaType at,
- float gamma) {
- Profile p;
- if (color_type_supports_gamma(ct)) {
- gamma = pin_gamma_to_legal(gamma);
- p = kExponential_Profile;
- } else {
- p = kUnknown_Profile;
- gamma = 0;
- }
- return SkImageInfo(width, height, ct, at, p, gamma);
+void SkImageInfo::flatten(SkWriteBuffer& buffer) const {
+ buffer.write32(fWidth);
+ buffer.write32(fHeight);
+
+ SkASSERT(0 == (fAlphaType & ~0xFF));
+ SkASSERT(0 == (fColorType & ~0xFF));
+ uint32_t packed = (fAlphaType << 8) | fColorType;
+ buffer.write32(packed);
}
bool SkColorTypeValidateAlphaType(SkColorType colorType, SkAlphaType alphaType,
}
return true;
}
-
-void SkImageInfo::unflatten(SkReadBuffer& buffer) {
- *this = Unflatten(buffer);
-}
-
-////////////////////////////////////////////////////////////////////////////////////////////
-
-static bool alpha_type_is_valid(SkAlphaType alphaType) {
- return (alphaType >= 0) && (alphaType <= kLastEnum_SkAlphaType);
-}
-
-static bool color_type_is_valid(SkColorType colorType) {
- return (colorType >= 0) && (colorType <= kLastEnum_SkColorType);
-}
-
-static float igamma_to_gamma(int gamma3dot9) {
- return gamma3dot9 / 512.0f;
-}
-
-static unsigned gamma_to_igamma(float gamma) {
- SkASSERT(gamma >= 0 && gamma < 8);
- int igamma = SkScalarRoundToInt(gamma * 512);
- SkASSERT(igamma >= 0 && igamma <= 0xFFF);
- return igamma;
-}
-
-SkImageInfo SkImageInfo::Unflatten(SkReadBuffer& buffer) {
- int width = buffer.read32();
- int height = buffer.read32();
- uint32_t packed = buffer.read32();
-
- SkColorType ct = (SkColorType)((packed >> 0) & 0xFF); // 8 bits for colortype
- SkAlphaType at = (SkAlphaType)((packed >> 8) & 0xFF); // 8 bits for alphatype
- if (!alpha_type_is_valid(at) || !color_type_is_valid(ct)) {
- return MakeUnknown();
- }
-
- // Earlier formats always stored 0 in the upper 16 bits. That corresponds to
- // days before we had gamma/profile. That happens to correspond to kUnknown_Profile,
- // which means we can just ignore the gamma value anyways.
- //
- int iprofile = ((packed >> 16) & 0xF); // 4 bits for profile
-
- switch (iprofile) {
- case kUnknown_Profile:
- return Make(width, height, ct, at);
- case kSRGB_Profile:
- return MakeSRGB(width, height, ct, at);
- case kExponential_Profile: {
- int igamma = packed >> 20; // 12 bits for gamma 3.9
- float gamma = igamma_to_gamma(igamma);
- return MakeWithGamma(width, height, ct, at, gamma);
- }
- default:
- (void)buffer.validate(false);
- return MakeUnknown();
- }
-}
-
-void SkImageInfo::flatten(SkWriteBuffer& buffer) const {
- buffer.write32(fWidth);
- buffer.write32(fHeight);
-
- SkASSERT(0 == (fColorType & ~0xFF)); // 8 bits for colortype
- SkASSERT(0 == (fAlphaType & ~0xFF)); // 8 bits for alphatype
- SkASSERT(0 == (fProfile & ~0xF)); // 4 bits for profile
- int igamma = gamma_to_igamma(fGamma); // 12 bits for gamma (if needed)
-
- uint32_t packed = (igamma << 20) | (fProfile << 16) | (fAlphaType << 8) | fColorType;
- buffer.write32(packed);
-}
+++ /dev/null
-/*
- * Copyright 2014 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "SkImageInfo.h"
-
-#include "Test.h"
-
-struct ImageInfoRec {
- int fWidth;
- int fHeight;
- SkColorType fColorType;
- SkAlphaType fAlphaType;
- float fGamma;
- bool fIsSRGB;
-};
-
-static void check_info(skiatest::Reporter* reporter,
- const ImageInfoRec& expected, const SkImageInfo& info) {
- REPORTER_ASSERT(reporter, info.width() == expected.fWidth);
- REPORTER_ASSERT(reporter, info.height() == expected.fHeight);
- REPORTER_ASSERT(reporter, info.colorType() == expected.fColorType);
- REPORTER_ASSERT(reporter, info.alphaType() == expected.fAlphaType);
- REPORTER_ASSERT(reporter, info.gamma() == expected.fGamma);
- REPORTER_ASSERT(reporter, info.isSRGB() == expected.fIsSRGB);
-}
-
-DEF_TEST(ImageInfo, reporter) {
- const float nan = SK_ScalarNaN;
- const float nice_gamma = 1.5f;
- const int W = 100;
- const int H = 200;
- SkImageInfo info;
-
- const ImageInfoRec rec[] = {
- { 0, 0, kUnknown_SkColorType, kIgnore_SkAlphaType, 0, false }, // MakeUnknown()
- { W, H, kUnknown_SkColorType, kIgnore_SkAlphaType, 0, false }, // MakeUnknown(...)
- { W, H, kN32_SkColorType, kPremul_SkAlphaType, 1, false }, // MakeN32Premul(...)
- { W, H, kN32_SkColorType, kOpaque_SkAlphaType, 1, false }, // MakeN32(...)
- { W, H, kAlpha_8_SkColorType, kPremul_SkAlphaType, 0, false }, // MakeA8()
- { W, H, kRGBA_8888_SkColorType, kUnpremul_SkAlphaType, 1, false }, // Make()
- { W, H, kBGRA_8888_SkColorType, kPremul_SkAlphaType, 1, false }, // Make()
- { W, H, kBGRA_8888_SkColorType, kPremul_SkAlphaType, 0, true }, // MakeSRGB()
- { W, H, kN32_SkColorType, kPremul_SkAlphaType, 1, false }, // MakeWithGamma() NaN
- { W, H, kAlpha_8_SkColorType, kPremul_SkAlphaType, 0, false }, // MakeWithGamma() bad ct for gamma
- { W, H, kN32_SkColorType, kPremul_SkAlphaType, nice_gamma, false }, // MakeWithGamma() good
- };
-
- check_info(reporter, rec[ 0], SkImageInfo::MakeUnknown());
- check_info(reporter, rec[ 1], SkImageInfo::MakeUnknown(W, H));
- check_info(reporter, rec[ 2], SkImageInfo::MakeN32Premul(W, H));
- check_info(reporter, rec[ 3], SkImageInfo::MakeN32(W, H, rec[3].fAlphaType));
- check_info(reporter, rec[ 4], SkImageInfo::MakeA8(W, H));
- check_info(reporter, rec[ 5], SkImageInfo::Make(W, H, rec[5].fColorType, rec[5].fAlphaType));
- check_info(reporter, rec[ 6], SkImageInfo::Make(W, H, rec[6].fColorType, rec[6].fAlphaType));
- check_info(reporter, rec[ 7], SkImageInfo::MakeSRGB(W, H, rec[7].fColorType, rec[7].fAlphaType));
- check_info(reporter, rec[ 8], SkImageInfo::MakeWithGamma(W, H, rec[8].fColorType, rec[8].fAlphaType, nan));
- check_info(reporter, rec[ 9], SkImageInfo::MakeWithGamma(W, H, rec[9].fColorType, rec[9].fAlphaType, nice_gamma));
- check_info(reporter, rec[10], SkImageInfo::MakeWithGamma(W, H, rec[10].fColorType, rec[10].fAlphaType, rec[10].fGamma));
-}
-
projects / platform / upstream / libSkiaSharp.git / commitdiff