windowscodecs: Add support for generating WICBitmapPaletteTypeFixedHalftone8 palette.
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@ -1,5 +1,6 @@
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/*
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* Copyright 2009 Vincent Povirk for CodeWeavers
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* Copyright 2012 Dmitry Timoshkov
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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@ -132,6 +133,33 @@ static WICColor *generate_gray256_palette(UINT *count)
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return entries;
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}
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static WICColor *generate_halftone8_palette(UINT *count)
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{
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WICColor *entries;
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UINT i;
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*count = 16;
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entries = HeapAlloc(GetProcessHeap(), 0, 16 * sizeof(WICColor));
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if (!entries) return NULL;
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for (i = 0; i < 8; i++)
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{
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entries[i] = 0xff000000;
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if (i & 1) entries[i] |= 0xff;
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if (i & 2) entries[i] |= 0xff00;
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if (i & 4) entries[i] |= 0xff0000;
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}
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for (i = 8; i < 16; i++)
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{
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static const DWORD halftone[8] = { 0xc0c0c0, 0x808080, 0x800000, 0x008000,
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0x000080, 0x808000, 0x800080, 0x008080 };
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entries[i] = 0xff000000;
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entries[i] |= halftone[i-8];
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}
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return entries;
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}
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static HRESULT WINAPI PaletteImpl_InitializePredefined(IWICPalette *iface,
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WICBitmapPaletteType type, BOOL add_transparent)
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{
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@ -171,6 +199,11 @@ static HRESULT WINAPI PaletteImpl_InitializePredefined(IWICPalette *iface,
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if (!colors) return E_OUTOFMEMORY;
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break;
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case WICBitmapPaletteTypeFixedHalftone8:
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colors = generate_halftone8_palette(&count);
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if (!colors) return E_OUTOFMEMORY;
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break;
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default:
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FIXME("(%p,%u,%d): stub\n", iface, type, add_transparent);
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return E_NOTIMPL;
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@ -1,5 +1,6 @@
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/*
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* Copyright 2009 Vincent Povirk for CodeWeavers
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* Copyright 2012 Dmitry Timoshkov
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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@ -175,6 +176,29 @@ static void generate_gray256_palette(DWORD *entries, UINT count)
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}
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}
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static void generate_halftone8_palette(DWORD *entries, UINT count)
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{
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UINT i;
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assert(count == 16);
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for (i = 0; i < 8; i++)
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{
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entries[i] = 0xff000000;
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if (i & 1) entries[i] |= 0xff;
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if (i & 2) entries[i] |= 0xff00;
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if (i & 4) entries[i] |= 0xff0000;
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}
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for (i = 8; i < 16; i++)
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{
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static const DWORD halftone[8] = { 0xc0c0c0, 0x808080, 0x800000, 0x008000,
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0x000080, 0x808000, 0x800080, 0x008080 };
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entries[i] = 0xff000000;
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entries[i] |= halftone[i-8];
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}
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}
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static void test_predefined_palette(void)
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{
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static struct test_data
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@ -190,6 +214,7 @@ static void test_predefined_palette(void)
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{ 0xff000000, 0xff555555, 0xffaaaaaa, 0xffffffff } },
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{ WICBitmapPaletteTypeFixedGray16, 0, 1, 16, { 0 } },
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{ WICBitmapPaletteTypeFixedGray256, 0, 1, 256, { 0 } },
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{ WICBitmapPaletteTypeFixedHalftone8, 0, 0, 16, { 0 } },
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};
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IWICImagingFactory *factory;
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IWICPalette *palette;
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@ -244,6 +269,8 @@ static void test_predefined_palette(void)
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generate_gray16_palette(td[i].color, td[i].count);
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else if (td[i].type == WICBitmapPaletteTypeFixedGray256)
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generate_gray256_palette(td[i].color, td[i].count);
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else if (td[i].type == WICBitmapPaletteTypeFixedHalftone8)
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generate_halftone8_palette(td[i].color, td[i].count);
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for (j = 0; j < count; j++)
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{
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