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windowscodecs: Add support for generating WICBitmapPaletteTypeFixedHalftone252 palette.

This commit is contained in:
Dmitry Timoshkov 2012-07-23 12:46:54 +09:00 committed by Alexandre Julliard
parent 87b23de9bb
commit 0be2718baa
2 changed files with 46 additions and 0 deletions
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26
dlls/windowscodecs/palette.c
View File

@ -260,6 +260,27 @@ static WICColor *generate_halftone216_palette(UINT *count)
return entries;
}
static WICColor *generate_halftone252_palette(UINT *count)
{
WICColor *entries;
UINT i;
*count = 252;
entries = HeapAlloc(GetProcessHeap(), 0, 252 * sizeof(WICColor));
if (!entries) return NULL;
for (i = 0; i < 252; i++)
{
static const BYTE halftone_values_rb[6] = { 0x00,0x33,0x66,0x99,0xcc,0xff };
static const BYTE halftone_values_g[7] = { 0x00,0x2b,0x55,0x80,0xaa,0xd5,0xff };
entries[i] = 0xff000000;
entries[i] |= halftone_values_rb[i%6];
entries[i] |= halftone_values_g[(i/6)%7] << 8;
entries[i] |= halftone_values_rb[(i/42)%6] << 16;
}
return entries;
}
static WICColor *generate_halftone256_palette(UINT *count)
{
WICColor *entries;
@ -345,6 +366,11 @@ static HRESULT WINAPI PaletteImpl_InitializePredefined(IWICPalette *iface,
if (!colors) return E_OUTOFMEMORY;
break;
case WICBitmapPaletteTypeFixedHalftone252:
colors = generate_halftone252_palette(&count);
if (!colors) return E_OUTOFMEMORY;
break;
case WICBitmapPaletteTypeFixedHalftone256:
colors = generate_halftone256_palette(&count);
if (!colors) return E_OUTOFMEMORY;

20
dlls/windowscodecs/tests/palette.c
View File

@ -283,6 +283,23 @@ static void generate_halftone216_palette(DWORD *entries, UINT count)
}
}
static void generate_halftone252_palette(DWORD *entries, UINT count)
{
static const BYTE halftone_values_rb[6] = { 0x00,0x33,0x66,0x99,0xcc,0xff };
static const BYTE halftone_values_g[7] = { 0x00,0x2b,0x55,0x80,0xaa,0xd5,0xff };
UINT i;
assert(count == 252);
for (i = 0; i < 252; i++)
{
entries[i] = 0xff000000;
entries[i] |= halftone_values_rb[i%6];
entries[i] |= halftone_values_g[(i/6)%7] << 8;
entries[i] |= halftone_values_rb[(i/42)%6] << 16;
}
}
static void generate_halftone256_palette(DWORD *entries, UINT count)
{
static const BYTE halftone_values_b[4] = { 0x00,0x55,0xaa,0xff };
@ -320,6 +337,7 @@ static void test_predefined_palette(void)
{ WICBitmapPaletteTypeFixedHalftone64, 0, 0, 72, { 0 } },
{ WICBitmapPaletteTypeFixedHalftone125, 0, 0, 126, { 0 } },
{ WICBitmapPaletteTypeFixedHalftone216, 0, 0, 224, { 0 } },
{ WICBitmapPaletteTypeFixedHalftone252, 0, 0, 252, { 0 } },
{ WICBitmapPaletteTypeFixedHalftone256, 0, 0, 256, { 0 } },
};
IWICImagingFactory *factory;
@ -385,6 +403,8 @@ static void test_predefined_palette(void)
generate_halftone125_palette(td[i].color, td[i].count);
else if (td[i].type == WICBitmapPaletteTypeFixedHalftone216)
generate_halftone216_palette(td[i].color, td[i].count);
else if (td[i].type == WICBitmapPaletteTypeFixedHalftone252)
generate_halftone252_palette(td[i].color, td[i].count);
else if (td[i].type == WICBitmapPaletteTypeFixedHalftone256)
generate_halftone256_palette(td[i].color, td[i].count);