25bd5d8adb
subrepo: subdir: "deps/juce" merged: "b13f9084e" upstream: origin: "https://github.com/essej/JUCE.git" branch: "sono6good" commit: "b13f9084e" git-subrepo: version: "0.4.3" origin: "https://github.com/ingydotnet/git-subrepo.git" commit: "2f68596"
741 lines
25 KiB
C++
741 lines
25 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2020 - Raw Material Software Limited
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 6 End-User License
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Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
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End User License Agreement: www.juce.com/juce-6-licence
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Privacy Policy: www.juce.com/juce-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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//==============================================================================
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#if JUCE_MSVC
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#pragma pack (push, 1)
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#endif
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class PixelRGB;
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class PixelAlpha;
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inline uint32 maskPixelComponents (uint32 x) noexcept
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{
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return (x >> 8) & 0x00ff00ff;
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}
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inline uint32 clampPixelComponents (uint32 x) noexcept
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{
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return (x | (0x01000100 - maskPixelComponents (x))) & 0x00ff00ff;
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}
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//==============================================================================
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/**
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Represents a 32-bit INTERNAL pixel with premultiplied alpha, and can perform compositing
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operations with it.
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This is used internally by the imaging classes.
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@see PixelRGB
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@tags{Graphics}
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*/
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class JUCE_API PixelARGB
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{
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public:
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/** Creates a pixel without defining its colour. */
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PixelARGB() noexcept = default;
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PixelARGB (uint8 a, uint8 r, uint8 g, uint8 b) noexcept
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{
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components.b = b;
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components.g = g;
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components.r = r;
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components.a = a;
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}
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//==============================================================================
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/** Returns a uint32 which represents the pixel in a platform dependent format. */
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forcedinline uint32 getNativeARGB() const noexcept { return internal; }
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/** Returns a uint32 which will be in argb order as if constructed with the following mask operation
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((alpha << 24) | (red << 16) | (green << 8) | blue). */
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forcedinline uint32 getInARGBMaskOrder() const noexcept
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{
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#if JUCE_ANDROID
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return (uint32) ((components.a << 24) | (components.r << 16) | (components.g << 8) | (components.b << 0));
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#else
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return getNativeARGB();
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#endif
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}
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/** Returns a uint32 which when written to memory, will be in the order a, r, g, b. In other words,
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if the return-value is read as a uint8 array then the elements will be in the order of a, r, g, b*/
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inline uint32 getInARGBMemoryOrder() const noexcept
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{
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#if JUCE_BIG_ENDIAN
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return getInARGBMaskOrder();
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#else
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return (uint32) ((components.b << 24) | (components.g << 16) | (components.r << 8) | components.a);
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#endif
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}
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/** Return channels with an even index and insert zero bytes between them. This is useful for blending
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operations. The exact channels which are returned is platform dependent. */
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forcedinline uint32 getEvenBytes() const noexcept { return 0x00ff00ff & internal; }
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/** Return channels with an odd index and insert zero bytes between them. This is useful for blending
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operations. The exact channels which are returned is platform dependent. */
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forcedinline uint32 getOddBytes() const noexcept { return 0x00ff00ff & (internal >> 8); }
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//==============================================================================
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forcedinline uint8 getAlpha() const noexcept { return components.a; }
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forcedinline uint8 getRed() const noexcept { return components.r; }
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forcedinline uint8 getGreen() const noexcept { return components.g; }
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forcedinline uint8 getBlue() const noexcept { return components.b; }
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//==============================================================================
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/** Copies another pixel colour over this one.
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This doesn't blend it - this colour is simply replaced by the other one.
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*/
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template <class Pixel>
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forcedinline void set (const Pixel& src) noexcept
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{
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internal = src.getNativeARGB();
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}
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//==============================================================================
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/** Sets the pixel's colour from individual components. */
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void setARGB (uint8 a, uint8 r, uint8 g, uint8 b) noexcept
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{
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components.b = b;
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components.g = g;
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components.r = r;
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components.a = a;
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}
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//==============================================================================
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/** Blends another pixel onto this one.
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This takes into account the opacity of the pixel being overlaid, and blends
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it accordingly.
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*/
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template <class Pixel>
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forcedinline void blend (const Pixel& src) noexcept
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{
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auto rb = src.getEvenBytes();
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auto ag = src.getOddBytes();
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const auto alpha = 0x100 - (ag >> 16);
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rb += maskPixelComponents (getEvenBytes() * alpha);
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ag += maskPixelComponents (getOddBytes() * alpha);
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internal = clampPixelComponents (rb) | (clampPixelComponents (ag) << 8);
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}
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/** Blends another pixel onto this one.
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This takes into account the opacity of the pixel being overlaid, and blends
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it accordingly.
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*/
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forcedinline void blend (PixelRGB src) noexcept;
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/** Blends another pixel onto this one, applying an extra multiplier to its opacity.
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The opacity of the pixel being overlaid is scaled by the extraAlpha factor before
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being used, so this can blend semi-transparently from a PixelRGB argument.
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*/
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template <class Pixel>
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forcedinline void blend (const Pixel& src, uint32 extraAlpha) noexcept
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{
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auto rb = maskPixelComponents (extraAlpha * src.getEvenBytes());
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auto ag = maskPixelComponents (extraAlpha * src.getOddBytes());
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const auto alpha = 0x100 - (ag >> 16);
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rb += maskPixelComponents (getEvenBytes() * alpha);
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ag += maskPixelComponents (getOddBytes() * alpha);
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internal = clampPixelComponents (rb) | (clampPixelComponents (ag) << 8);
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}
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/** Blends another pixel with this one, creating a colour that is somewhere
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between the two, as specified by the amount.
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*/
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template <class Pixel>
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forcedinline void tween (const Pixel& src, uint32 amount) noexcept
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{
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auto dEvenBytes = getEvenBytes();
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dEvenBytes += (((src.getEvenBytes() - dEvenBytes) * amount) >> 8);
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dEvenBytes &= 0x00ff00ff;
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auto dOddBytes = getOddBytes();
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dOddBytes += (((src.getOddBytes() - dOddBytes) * amount) >> 8);
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dOddBytes &= 0x00ff00ff;
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dOddBytes <<= 8;
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dOddBytes |= dEvenBytes;
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internal = dOddBytes;
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}
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//==============================================================================
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/** Replaces the colour's alpha value with another one. */
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forcedinline void setAlpha (uint8 newAlpha) noexcept
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{
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components.a = newAlpha;
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}
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/** Multiplies the colour's alpha value with another one. */
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forcedinline void multiplyAlpha (int multiplier) noexcept
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{
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// increment alpha by 1, so that if multiplier == 255 (full alpha),
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// this function will not change the values.
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++multiplier;
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internal = ((((uint32) multiplier) * getOddBytes()) & 0xff00ff00)
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| (((((uint32) multiplier) * getEvenBytes()) >> 8) & 0x00ff00ff);
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}
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forcedinline void multiplyAlpha (float multiplier) noexcept
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{
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multiplyAlpha ((int) (multiplier * 255.0f));
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}
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inline PixelARGB getUnpremultiplied() const noexcept
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{
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PixelARGB p (internal);
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p.unpremultiply();
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return p;
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}
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/** Premultiplies the pixel's RGB values by its alpha. */
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forcedinline void premultiply() noexcept
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{
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const auto alpha = components.a;
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if (alpha < 0xff)
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{
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if (alpha == 0)
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{
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components.b = 0;
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components.g = 0;
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components.r = 0;
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}
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else
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{
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components.b = (uint8) ((components.b * alpha + 0x7f) >> 8);
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components.g = (uint8) ((components.g * alpha + 0x7f) >> 8);
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components.r = (uint8) ((components.r * alpha + 0x7f) >> 8);
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}
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}
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}
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/** Unpremultiplies the pixel's RGB values. */
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forcedinline void unpremultiply() noexcept
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{
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const auto alpha = components.a;
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if (alpha < 0xff)
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{
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if (alpha == 0)
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{
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components.b = 0;
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components.g = 0;
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components.r = 0;
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}
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else
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{
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components.b = (uint8) jmin ((uint32) 0xffu, (components.b * 0xffu) / alpha);
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components.g = (uint8) jmin ((uint32) 0xffu, (components.g * 0xffu) / alpha);
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components.r = (uint8) jmin ((uint32) 0xffu, (components.r * 0xffu) / alpha);
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}
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}
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}
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forcedinline void desaturate() noexcept
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{
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if (components.a < 0xff && components.a > 0)
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{
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const auto newUnpremultipliedLevel = (0xff * ((int) components.r + (int) components.g + (int) components.b) / (3 * components.a));
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components.r = components.g = components.b
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= (uint8) ((newUnpremultipliedLevel * components.a + 0x7f) >> 8);
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}
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else
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{
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components.r = components.g = components.b
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= (uint8) (((int) components.r + (int) components.g + (int) components.b) / 3);
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}
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}
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//==============================================================================
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/** The indexes of the different components in the byte layout of this type of colour. */
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#if JUCE_ANDROID
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#if JUCE_BIG_ENDIAN
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enum { indexA = 0, indexR = 3, indexG = 2, indexB = 1 };
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#else
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enum { indexA = 3, indexR = 0, indexG = 1, indexB = 2 };
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#endif
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#else
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#if JUCE_BIG_ENDIAN
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enum { indexA = 0, indexR = 1, indexG = 2, indexB = 3 };
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#else
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enum { indexA = 3, indexR = 2, indexG = 1, indexB = 0 };
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#endif
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#endif
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private:
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//==============================================================================
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PixelARGB (uint32 internalValue) noexcept
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: internal (internalValue)
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{
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}
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//==============================================================================
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struct Components
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{
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#if JUCE_ANDROID
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#if JUCE_BIG_ENDIAN
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uint8 a, b, g, r;
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#else
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uint8 r, g, b, a;
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#endif
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#else
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#if JUCE_BIG_ENDIAN
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uint8 a, r, g, b;
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#else
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uint8 b, g, r, a;
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#endif
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#endif
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} JUCE_PACKED;
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union
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{
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uint32 internal;
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Components components;
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};
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}
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#ifndef DOXYGEN
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JUCE_PACKED
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#endif
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;
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//==============================================================================
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/**
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Represents a 24-bit RGB pixel, and can perform compositing operations on it.
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This is used internally by the imaging classes.
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@see PixelARGB
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@tags{Graphics}
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*/
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class JUCE_API PixelRGB
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{
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public:
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/** Creates a pixel without defining its colour. */
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PixelRGB() noexcept = default;
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//==============================================================================
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/** Returns a uint32 which represents the pixel in a platform dependent format which is compatible
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with the native format of a PixelARGB.
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@see PixelARGB::getNativeARGB */
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forcedinline uint32 getNativeARGB() const noexcept
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{
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#if JUCE_ANDROID
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return (uint32) ((0xffu << 24) | r | ((uint32) g << 8) | ((uint32) b << 16));
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#else
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return (uint32) ((0xffu << 24) | b | ((uint32) g << 8) | ((uint32) r << 16));
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#endif
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}
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/** Returns a uint32 which will be in argb order as if constructed with the following mask operation
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((alpha << 24) | (red << 16) | (green << 8) | blue). */
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forcedinline uint32 getInARGBMaskOrder() const noexcept
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{
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#if JUCE_ANDROID
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return (uint32) ((0xffu << 24) | b | ((uint32) g << 8) | ((uint32) r << 16));
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#else
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return getNativeARGB();
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#endif
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}
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/** Returns a uint32 which when written to memory, will be in the order a, r, g, b. In other words,
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if the return-value is read as a uint8 array then the elements will be in the order of a, r, g, b*/
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inline uint32 getInARGBMemoryOrder() const noexcept
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{
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#if JUCE_BIG_ENDIAN
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return getInARGBMaskOrder();
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#else
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return (uint32) ((b << 24) | (g << 16) | (r << 8) | 0xff);
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#endif
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}
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/** Return channels with an even index and insert zero bytes between them. This is useful for blending
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operations. The exact channels which are returned is platform dependent but compatible with the
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return value of getEvenBytes of the PixelARGB class.
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@see PixelARGB::getEvenBytes */
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forcedinline uint32 getEvenBytes() const noexcept
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{
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#if JUCE_ANDROID
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return (uint32) (r | (b << 16));
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#else
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return (uint32) (b | (r << 16));
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#endif
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}
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/** Return channels with an odd index and insert zero bytes between them. This is useful for blending
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operations. The exact channels which are returned is platform dependent but compatible with the
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return value of getOddBytes of the PixelARGB class.
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@see PixelARGB::getOddBytes */
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forcedinline uint32 getOddBytes() const noexcept { return (uint32) 0xff0000 | g; }
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//==============================================================================
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forcedinline uint8 getAlpha() const noexcept { return 0xff; }
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forcedinline uint8 getRed() const noexcept { return r; }
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forcedinline uint8 getGreen() const noexcept { return g; }
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forcedinline uint8 getBlue() const noexcept { return b; }
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//==============================================================================
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/** Copies another pixel colour over this one.
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This doesn't blend it - this colour is simply replaced by the other one.
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Because PixelRGB has no alpha channel, any alpha value in the source pixel
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is thrown away.
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*/
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template <class Pixel>
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forcedinline void set (const Pixel& src) noexcept
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{
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b = src.getBlue();
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g = src.getGreen();
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r = src.getRed();
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}
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/** Sets the pixel's colour from individual components. */
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void setARGB (uint8, uint8 red, uint8 green, uint8 blue) noexcept
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{
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r = red;
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g = green;
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b = blue;
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}
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//==============================================================================
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/** Blends another pixel onto this one.
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This takes into account the opacity of the pixel being overlaid, and blends
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it accordingly.
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*/
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template <class Pixel>
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forcedinline void blend (const Pixel& src) noexcept
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{
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const auto alpha = (uint32) (0x100 - src.getAlpha());
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// getEvenBytes returns 0x00rr00bb on non-android
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const auto rb = clampPixelComponents (src.getEvenBytes() + maskPixelComponents (getEvenBytes() * alpha));
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// getOddBytes returns 0x00aa00gg on non-android
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const auto ag = clampPixelComponents (src.getOddBytes() + ((g * alpha) >> 8));
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g = (uint8) (ag & 0xff);
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#if JUCE_ANDROID
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b = (uint8) (rb >> 16);
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r = (uint8) (rb & 0xff);
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#else
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r = (uint8) (rb >> 16);
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b = (uint8) (rb & 0xff);
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#endif
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}
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forcedinline void blend (PixelRGB src) noexcept
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{
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set (src);
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}
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/** Blends another pixel onto this one, applying an extra multiplier to its opacity.
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The opacity of the pixel being overlaid is scaled by the extraAlpha factor before
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being used, so this can blend semi-transparently from a PixelRGB argument.
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*/
|
|
template <class Pixel>
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forcedinline void blend (const Pixel& src, uint32 extraAlpha) noexcept
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{
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auto ag = maskPixelComponents (extraAlpha * src.getOddBytes());
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auto rb = maskPixelComponents (extraAlpha * src.getEvenBytes());
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const auto alpha = 0x100 - (ag >> 16);
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ag = clampPixelComponents (ag + (g * alpha >> 8));
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rb = clampPixelComponents (rb + maskPixelComponents (getEvenBytes() * alpha));
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g = (uint8) (ag & 0xff);
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#if JUCE_ANDROID
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b = (uint8) (rb >> 16);
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r = (uint8) (rb & 0xff);
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#else
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r = (uint8) (rb >> 16);
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b = (uint8) (rb & 0xff);
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#endif
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}
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|
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/** Blends another pixel with this one, creating a colour that is somewhere
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between the two, as specified by the amount.
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*/
|
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template <class Pixel>
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forcedinline void tween (const Pixel& src, uint32 amount) noexcept
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{
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auto dEvenBytes = getEvenBytes();
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dEvenBytes += (((src.getEvenBytes() - dEvenBytes) * amount) >> 8);
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auto dOddBytes = getOddBytes();
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dOddBytes += (((src.getOddBytes() - dOddBytes) * amount) >> 8);
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g = (uint8) (dOddBytes & 0xff); // dOddBytes = 0x00aa00gg
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#if JUCE_ANDROID
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r = (uint8) (dEvenBytes & 0xff); // dEvenBytes = 0x00bb00rr
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b = (uint8) (dEvenBytes >> 16);
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#else
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b = (uint8) (dEvenBytes & 0xff); // dEvenBytes = 0x00rr00bb
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r = (uint8) (dEvenBytes >> 16);
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#endif
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}
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|
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//==============================================================================
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|
/** This method is included for compatibility with the PixelARGB class. */
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|
forcedinline void setAlpha (uint8) noexcept {}
|
|
|
|
/** Multiplies the colour's alpha value with another one. */
|
|
forcedinline void multiplyAlpha (int) noexcept {}
|
|
|
|
/** Multiplies the colour's alpha value with another one. */
|
|
forcedinline void multiplyAlpha (float) noexcept {}
|
|
|
|
/** Premultiplies the pixel's RGB values by its alpha. */
|
|
forcedinline void premultiply() noexcept {}
|
|
|
|
/** Unpremultiplies the pixel's RGB values. */
|
|
forcedinline void unpremultiply() noexcept {}
|
|
|
|
forcedinline void desaturate() noexcept
|
|
{
|
|
r = g = b = (uint8) (((int) r + (int) g + (int) b) / 3);
|
|
}
|
|
|
|
//==============================================================================
|
|
/** The indexes of the different components in the byte layout of this type of colour. */
|
|
#if JUCE_MAC
|
|
enum { indexR = 0, indexG = 1, indexB = 2 };
|
|
#else
|
|
enum { indexR = 2, indexG = 1, indexB = 0 };
|
|
#endif
|
|
|
|
private:
|
|
//==============================================================================
|
|
PixelRGB (uint32 internal) noexcept
|
|
{
|
|
#if JUCE_ANDROID
|
|
b = (uint8) (internal >> 16);
|
|
g = (uint8) (internal >> 8);
|
|
r = (uint8) (internal);
|
|
#else
|
|
r = (uint8) (internal >> 16);
|
|
g = (uint8) (internal >> 8);
|
|
b = (uint8) (internal);
|
|
#endif
|
|
}
|
|
|
|
//==============================================================================
|
|
#if JUCE_MAC
|
|
uint8 r, g, b;
|
|
#else
|
|
uint8 b, g, r;
|
|
#endif
|
|
|
|
}
|
|
#ifndef DOXYGEN
|
|
JUCE_PACKED
|
|
#endif
|
|
;
|
|
|
|
forcedinline void PixelARGB::blend (PixelRGB src) noexcept
|
|
{
|
|
set (src);
|
|
}
|
|
|
|
//==============================================================================
|
|
/**
|
|
Represents an 8-bit single-channel pixel, and can perform compositing operations on it.
|
|
|
|
This is used internally by the imaging classes.
|
|
|
|
@see PixelARGB, PixelRGB
|
|
|
|
@tags{Graphics}
|
|
*/
|
|
class JUCE_API PixelAlpha
|
|
{
|
|
public:
|
|
/** Creates a pixel without defining its colour. */
|
|
PixelAlpha() noexcept = default;
|
|
|
|
//==============================================================================
|
|
/** Returns a uint32 which represents the pixel in a platform dependent format which is compatible
|
|
with the native format of a PixelARGB.
|
|
|
|
@see PixelARGB::getNativeARGB */
|
|
forcedinline uint32 getNativeARGB() const noexcept { return (uint32) ((a << 24) | (a << 16) | (a << 8) | a); }
|
|
|
|
/** Returns a uint32 which will be in argb order as if constructed with the following mask operation
|
|
((alpha << 24) | (red << 16) | (green << 8) | blue). */
|
|
forcedinline uint32 getInARGBMaskOrder() const noexcept { return getNativeARGB(); }
|
|
|
|
/** Returns a uint32 which when written to memory, will be in the order a, r, g, b. In other words,
|
|
if the return-value is read as a uint8 array then the elements will be in the order of a, r, g, b*/
|
|
inline uint32 getInARGBMemoryOrder() const noexcept { return getNativeARGB(); }
|
|
|
|
/** Return channels with an even index and insert zero bytes between them. This is useful for blending
|
|
operations. The exact channels which are returned is platform dependent but compatible with the
|
|
return value of getEvenBytes of the PixelARGB class.
|
|
|
|
@see PixelARGB::getEvenBytes */
|
|
forcedinline uint32 getEvenBytes() const noexcept { return (uint32) ((a << 16) | a); }
|
|
|
|
/** Return channels with an odd index and insert zero bytes between them. This is useful for blending
|
|
operations. The exact channels which are returned is platform dependent but compatible with the
|
|
return value of getOddBytes of the PixelARGB class.
|
|
|
|
@see PixelARGB::getOddBytes */
|
|
forcedinline uint32 getOddBytes() const noexcept { return (uint32) ((a << 16) | a); }
|
|
|
|
//==============================================================================
|
|
forcedinline uint8 getAlpha() const noexcept { return a; }
|
|
forcedinline uint8 getRed() const noexcept { return 0; }
|
|
forcedinline uint8 getGreen() const noexcept { return 0; }
|
|
forcedinline uint8 getBlue() const noexcept { return 0; }
|
|
|
|
//==============================================================================
|
|
/** Copies another pixel colour over this one.
|
|
|
|
This doesn't blend it - this colour is simply replaced by the other one.
|
|
*/
|
|
template <class Pixel>
|
|
forcedinline void set (const Pixel& src) noexcept
|
|
{
|
|
a = src.getAlpha();
|
|
}
|
|
|
|
/** Sets the pixel's colour from individual components. */
|
|
forcedinline void setARGB (uint8 a_, uint8, uint8, uint8) noexcept
|
|
{
|
|
a = a_;
|
|
}
|
|
|
|
//==============================================================================
|
|
/** Blends another pixel onto this one.
|
|
|
|
This takes into account the opacity of the pixel being overlaid, and blends
|
|
it accordingly.
|
|
*/
|
|
template <class Pixel>
|
|
forcedinline void blend (const Pixel& src) noexcept
|
|
{
|
|
const auto srcA = src.getAlpha();
|
|
a = (uint8) ((a * (0x100 - srcA) >> 8) + srcA);
|
|
}
|
|
|
|
/** Blends another pixel onto this one, applying an extra multiplier to its opacity.
|
|
|
|
The opacity of the pixel being overlaid is scaled by the extraAlpha factor before
|
|
being used, so this can blend semi-transparently from a PixelRGB argument.
|
|
*/
|
|
template <class Pixel>
|
|
forcedinline void blend (const Pixel& src, uint32 extraAlpha) noexcept
|
|
{
|
|
++extraAlpha;
|
|
const auto srcAlpha = (int) ((extraAlpha * src.getAlpha()) >> 8);
|
|
a = (uint8) ((a * (0x100 - srcAlpha) >> 8) + srcAlpha);
|
|
}
|
|
|
|
/** Blends another pixel with this one, creating a colour that is somewhere
|
|
between the two, as specified by the amount.
|
|
*/
|
|
template <class Pixel>
|
|
forcedinline void tween (const Pixel& src, uint32 amount) noexcept
|
|
{
|
|
a += ((src.getAlpha() - a) * amount) >> 8;
|
|
}
|
|
|
|
//==============================================================================
|
|
/** Replaces the colour's alpha value with another one. */
|
|
forcedinline void setAlpha (uint8 newAlpha) noexcept
|
|
{
|
|
a = newAlpha;
|
|
}
|
|
|
|
/** Multiplies the colour's alpha value with another one. */
|
|
forcedinline void multiplyAlpha (int multiplier) noexcept
|
|
{
|
|
++multiplier;
|
|
a = (uint8) ((a * multiplier) >> 8);
|
|
}
|
|
|
|
forcedinline void multiplyAlpha (float multiplier) noexcept
|
|
{
|
|
a = (uint8) (a * multiplier);
|
|
}
|
|
|
|
/** Premultiplies the pixel's RGB values by its alpha. */
|
|
forcedinline void premultiply() noexcept {}
|
|
|
|
/** Unpremultiplies the pixel's RGB values. */
|
|
forcedinline void unpremultiply() noexcept {}
|
|
|
|
forcedinline void desaturate() noexcept {}
|
|
|
|
//==============================================================================
|
|
/** The indexes of the different components in the byte layout of this type of colour. */
|
|
enum { indexA = 0 };
|
|
|
|
private:
|
|
//==============================================================================
|
|
PixelAlpha (uint32 internal) noexcept
|
|
: a ((uint8) (internal >> 24)) { }
|
|
|
|
//==============================================================================
|
|
uint8 a;
|
|
}
|
|
#ifndef DOXYGEN
|
|
JUCE_PACKED
|
|
#endif
|
|
;
|
|
|
|
#if JUCE_MSVC
|
|
#pragma pack (pop)
|
|
#endif
|
|
|
|
} // namespace juce
|