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windowscodecs: Add support for generating WICBitmapPaletteTypeFixedGray256 palette.

This commit is contained in:
Dmitry Timoshkov 2012-07-12 16:09:26 +09:00 committed by Alexandre Julliard
parent 179ed52bd3
commit ca126c069f
2 changed files with 38 additions and 0 deletions
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22
dlls/windowscodecs/palette.c
View File

@ -115,6 +115,23 @@ static WICColor *generate_gray16_palette(UINT *count)
return entries;
}
static WICColor *generate_gray256_palette(UINT *count)
{
WICColor *entries;
UINT i;
*count = 256;
entries = HeapAlloc(GetProcessHeap(), 0, 256 * sizeof(WICColor));
if (!entries) return NULL;
for (i = 0; i < 256; i++)
{
entries[i] = 0xff000000;
entries[i] |= (i<<16) | (i<<8) | i;
}
return entries;
}
static HRESULT WINAPI PaletteImpl_InitializePredefined(IWICPalette *iface,
WICBitmapPaletteType type, BOOL add_transparent)
{
@ -149,6 +166,11 @@ static HRESULT WINAPI PaletteImpl_InitializePredefined(IWICPalette *iface,
if (!colors) return E_OUTOFMEMORY;
break;
case WICBitmapPaletteTypeFixedGray256:
colors = generate_gray256_palette(&count);
if (!colors) return E_OUTOFMEMORY;
break;
default:
FIXME("(%p,%u,%d): stub\n", iface, type, add_transparent);
return E_NOTIMPL;

16
dlls/windowscodecs/tests/palette.c
View File

@ -162,6 +162,19 @@ static void generate_gray16_palette(DWORD *entries, UINT count)
}
}
static void generate_gray256_palette(DWORD *entries, UINT count)
{
UINT i;
assert(count == 256);
for (i = 0; i < 256; i++)
{
entries[i] = 0xff000000;
entries[i] |= (i << 16) | (i << 8) | i;
}
}
static void test_predefined_palette(void)
{
static struct test_data
@ -176,6 +189,7 @@ static void test_predefined_palette(void)
{ WICBitmapPaletteTypeFixedGray4, 0, 1, 4,
{ 0xff000000, 0xff555555, 0xffaaaaaa, 0xffffffff } },
{ WICBitmapPaletteTypeFixedGray16, 0, 1, 16, { 0 } },
{ WICBitmapPaletteTypeFixedGray256, 0, 1, 256, { 0 } },
};
IWICImagingFactory *factory;
IWICPalette *palette;
@ -228,6 +242,8 @@ static void test_predefined_palette(void)
if (td[i].type == WICBitmapPaletteTypeFixedGray16)
generate_gray16_palette(td[i].color, td[i].count);
else if (td[i].type == WICBitmapPaletteTypeFixedGray256)
generate_gray256_palette(td[i].color, td[i].count);
for (j = 0; j < count; j++)
{