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Diffstat (limited to 'include/codec/SkEncodedInfo.h')
| -rw-r--r-- | include/codec/SkEncodedInfo.h | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/include/codec/SkEncodedInfo.h b/include/codec/SkEncodedInfo.h deleted file mode 100644 index dce88cadc1..0000000000 --- a/include/codec/SkEncodedInfo.h +++ /dev/null @@ -1,201 +0,0 @@ -/* - * 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 SkEncodedInfo_DEFINED -#define SkEncodedInfo_DEFINED - -#include "SkImageInfo.h" - -class SkColorSpace; - -struct SkEncodedInfo { -public: - - enum Alpha { - kOpaque_Alpha, - kUnpremul_Alpha, - - // Each pixel is either fully opaque or fully transparent. - // There is no difference between requesting kPremul or kUnpremul. - kBinary_Alpha, - }; - - /* - * We strive to make the number of components per pixel obvious through - * our naming conventions. - * Ex: kRGB has 3 components. kRGBA has 4 components. - * - * This sometimes results in redundant Alpha and Color information. - * Ex: kRGB images must also be kOpaque. - */ - enum Color { - // PNG, WBMP - kGray_Color, - - // PNG - kGrayAlpha_Color, - - // PNG, GIF, BMP - kPalette_Color, - - // PNG, RAW - kRGB_Color, - kRGBA_Color, - - // BMP - kBGR_Color, - kBGRX_Color, - kBGRA_Color, - - // JPEG, WEBP - kYUV_Color, - - // WEBP - kYUVA_Color, - - // JPEG - // Photoshop actually writes inverted CMYK data into JPEGs, where zero - // represents 100% ink coverage. For this reason, we treat CMYK JPEGs - // as having inverted CMYK. libjpeg-turbo warns that this may break - // other applications, but the CMYK JPEGs we see on the web expect to - // be treated as inverted CMYK. - kInvertedCMYK_Color, - kYCCK_Color, - }; - - static SkEncodedInfo Make(Color color, Alpha alpha, int bitsPerComponent) { - SkASSERT(1 == bitsPerComponent || - 2 == bitsPerComponent || - 4 == bitsPerComponent || - 8 == bitsPerComponent || - 16 == bitsPerComponent); - - switch (color) { - case kGray_Color: - SkASSERT(kOpaque_Alpha == alpha); - break; - case kGrayAlpha_Color: - SkASSERT(kOpaque_Alpha != alpha); - break; - case kPalette_Color: - SkASSERT(16 != bitsPerComponent); - break; - case kRGB_Color: - case kBGR_Color: - case kBGRX_Color: - SkASSERT(kOpaque_Alpha == alpha); - SkASSERT(bitsPerComponent >= 8); - break; - case kYUV_Color: - case kInvertedCMYK_Color: - case kYCCK_Color: - SkASSERT(kOpaque_Alpha == alpha); - SkASSERT(8 == bitsPerComponent); - break; - case kRGBA_Color: - SkASSERT(kOpaque_Alpha != alpha); - SkASSERT(bitsPerComponent >= 8); - break; - case kBGRA_Color: - case kYUVA_Color: - SkASSERT(kOpaque_Alpha != alpha); - SkASSERT(8 == bitsPerComponent); - break; - default: - SkASSERT(false); - break; - } - - return SkEncodedInfo(color, alpha, bitsPerComponent); - } - - /* - * Returns an SkImageInfo with Skia color and alpha types that are the - * closest possible match to the encoded info. - */ - SkImageInfo makeImageInfo(int width, int height, sk_sp<SkColorSpace> colorSpace) const { - switch (fColor) { - case kGray_Color: - SkASSERT(kOpaque_Alpha == fAlpha); - return SkImageInfo::Make(width, height, kGray_8_SkColorType, - kOpaque_SkAlphaType, colorSpace); - case kGrayAlpha_Color: - SkASSERT(kOpaque_Alpha != fAlpha); - return SkImageInfo::Make(width, height, kN32_SkColorType, - kUnpremul_SkAlphaType, colorSpace); - case kPalette_Color: { - SkAlphaType alphaType = (kOpaque_Alpha == fAlpha) ? kOpaque_SkAlphaType : - kUnpremul_SkAlphaType; - return SkImageInfo::Make(width, height, kN32_SkColorType, - alphaType, colorSpace); - } - case kRGB_Color: - case kBGR_Color: - case kBGRX_Color: - case kYUV_Color: - case kInvertedCMYK_Color: - case kYCCK_Color: - SkASSERT(kOpaque_Alpha == fAlpha); - return SkImageInfo::Make(width, height, kN32_SkColorType, - kOpaque_SkAlphaType, colorSpace); - case kRGBA_Color: - case kBGRA_Color: - case kYUVA_Color: - SkASSERT(kOpaque_Alpha != fAlpha); - return SkImageInfo::Make(width, height, kN32_SkColorType, - kUnpremul_SkAlphaType, std::move(colorSpace)); - default: - SkASSERT(false); - return SkImageInfo::MakeUnknown(); - } - } - - Color color() const { return fColor; } - Alpha alpha() const { return fAlpha; } - bool opaque() const { return fAlpha == kOpaque_Alpha; } - - uint8_t bitsPerComponent() const { return fBitsPerComponent; } - - uint8_t bitsPerPixel() const { - switch (fColor) { - case kGray_Color: - return fBitsPerComponent; - case kGrayAlpha_Color: - return 2 * fBitsPerComponent; - case kPalette_Color: - return fBitsPerComponent; - case kRGB_Color: - case kBGR_Color: - case kYUV_Color: - return 3 * fBitsPerComponent; - case kRGBA_Color: - case kBGRA_Color: - case kBGRX_Color: - case kYUVA_Color: - case kInvertedCMYK_Color: - case kYCCK_Color: - return 4 * fBitsPerComponent; - default: - SkASSERT(false); - return 0; - } - } - -private: - - SkEncodedInfo(Color color, Alpha alpha, uint8_t bitsPerComponent) - : fColor(color) - , fAlpha(alpha) - , fBitsPerComponent(bitsPerComponent) - {} - - Color fColor; - Alpha fAlpha; - uint8_t fBitsPerComponent; -}; - -#endif |