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windowscodecs: Add support for generating WICBitmapPaletteTypeFixedHalftone8 palette.

This commit is contained in:
Dmitry Timoshkov 2012-07-12 16:10:27 +09:00 committed by Alexandre Julliard
parent ca126c069f
commit 63cb0cf6d2
2 changed files with 60 additions and 0 deletions
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33
dlls/windowscodecs/palette.c
View File

@ -1,5 +1,6 @@
/*
* Copyright 2009 Vincent Povirk for CodeWeavers
* Copyright 2012 Dmitry Timoshkov
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -132,6 +133,33 @@ static WICColor *generate_gray256_palette(UINT *count)
return entries;
}
static WICColor *generate_halftone8_palette(UINT *count)
{
WICColor *entries;
UINT i;
*count = 16;
entries = HeapAlloc(GetProcessHeap(), 0, 16 * sizeof(WICColor));
if (!entries) return NULL;
for (i = 0; i < 8; i++)
{
entries[i] = 0xff000000;
if (i & 1) entries[i] |= 0xff;
if (i & 2) entries[i] |= 0xff00;
if (i & 4) entries[i] |= 0xff0000;
}
for (i = 8; i < 16; i++)
{
static const DWORD halftone[8] = { 0xc0c0c0, 0x808080, 0x800000, 0x008000,
0x000080, 0x808000, 0x800080, 0x008080 };
entries[i] = 0xff000000;
entries[i] |= halftone[i-8];
}
return entries;
}
static HRESULT WINAPI PaletteImpl_InitializePredefined(IWICPalette *iface,
WICBitmapPaletteType type, BOOL add_transparent)
{
@ -171,6 +199,11 @@ static HRESULT WINAPI PaletteImpl_InitializePredefined(IWICPalette *iface,
if (!colors) return E_OUTOFMEMORY;
break;
case WICBitmapPaletteTypeFixedHalftone8:
colors = generate_halftone8_palette(&count);
if (!colors) return E_OUTOFMEMORY;
break;
default:
FIXME("(%p,%u,%d): stub\n", iface, type, add_transparent);
return E_NOTIMPL;

27
dlls/windowscodecs/tests/palette.c
View File

@ -1,5 +1,6 @@
/*
* Copyright 2009 Vincent Povirk for CodeWeavers
* Copyright 2012 Dmitry Timoshkov
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -175,6 +176,29 @@ static void generate_gray256_palette(DWORD *entries, UINT count)
}
}
static void generate_halftone8_palette(DWORD *entries, UINT count)
{
UINT i;
assert(count == 16);
for (i = 0; i < 8; i++)
{
entries[i] = 0xff000000;
if (i & 1) entries[i] |= 0xff;
if (i & 2) entries[i] |= 0xff00;
if (i & 4) entries[i] |= 0xff0000;
}
for (i = 8; i < 16; i++)
{
static const DWORD halftone[8] = { 0xc0c0c0, 0x808080, 0x800000, 0x008000,
0x000080, 0x808000, 0x800080, 0x008080 };
entries[i] = 0xff000000;
entries[i] |= halftone[i-8];
}
}
static void test_predefined_palette(void)
{
static struct test_data
@ -190,6 +214,7 @@ static void test_predefined_palette(void)
{ 0xff000000, 0xff555555, 0xffaaaaaa, 0xffffffff } },
{ WICBitmapPaletteTypeFixedGray16, 0, 1, 16, { 0 } },
{ WICBitmapPaletteTypeFixedGray256, 0, 1, 256, { 0 } },
{ WICBitmapPaletteTypeFixedHalftone8, 0, 0, 16, { 0 } },
};
IWICImagingFactory *factory;
IWICPalette *palette;
@ -244,6 +269,8 @@ static void test_predefined_palette(void)
generate_gray16_palette(td[i].color, td[i].count);
else if (td[i].type == WICBitmapPaletteTypeFixedGray256)
generate_gray256_palette(td[i].color, td[i].count);
else if (td[i].type == WICBitmapPaletteTypeFixedHalftone8)
generate_halftone8_palette(td[i].color, td[i].count);
for (j = 0; j < count; j++)
{