Sweden-Number/dlls/wined3d/palette.c

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/* DirectDraw - IDirectPalette base interface
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*
* Copyright 1997-2000 Marcus Meissner
* Copyright 2000-2001 TransGaming Technologies Inc.
* Copyright 2006 Stefan Dösinger for CodeWeavers
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*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
#include "config.h"
#include "wine/port.h"
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#include "winerror.h"
#include "wine/debug.h"
#include <string.h>
#include "wined3d_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(d3d);
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ULONG CDECL wined3d_palette_incref(struct wined3d_palette *palette)
{
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ULONG refcount = InterlockedIncrement(&palette->ref);
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TRACE("%p increasing refcount to %u.\n", palette, refcount);
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return refcount;
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}
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ULONG CDECL wined3d_palette_decref(struct wined3d_palette *palette)
{
ULONG refcount = InterlockedDecrement(&palette->ref);
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TRACE("%p decreasing refcount to %u.\n", palette, refcount);
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if (!refcount)
HeapFree(GetProcessHeap(), 0, palette);
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return refcount;
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}
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HRESULT CDECL wined3d_palette_get_entries(const struct wined3d_palette *palette,
DWORD flags, DWORD start, DWORD count, PALETTEENTRY *entries)
{
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unsigned int i;
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TRACE("palette %p, flags %#x, start %u, count %u, entries %p.\n",
palette, flags, start, count, entries);
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if (flags)
return WINED3DERR_INVALIDCALL; /* unchecked */
if (start > palette->size || count > palette->size - start)
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return WINED3DERR_INVALIDCALL;
if (palette->flags & WINED3D_PALETTE_8BIT_ENTRIES)
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{
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BYTE *entry = (BYTE *)entries;
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for (i = start; i < count + start; ++i)
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*entry++ = palette->colors[i].rgbRed;
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}
else
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{
for (i = 0; i < count; ++i)
{
entries[i].peRed = palette->colors[i + start].rgbRed;
entries[i].peGreen = palette->colors[i + start].rgbGreen;
entries[i].peBlue = palette->colors[i + start].rgbBlue;
entries[i].peFlags = palette->colors[i + start].rgbReserved;
}
}
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return WINED3D_OK;
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}
void CDECL wined3d_palette_apply_to_dc(const struct wined3d_palette *palette, HDC dc)
{
if (SetDIBColorTable(dc, 0, 256, palette->colors) != 256)
ERR("Failed to set DIB color table.\n");
}
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HRESULT CDECL wined3d_palette_set_entries(struct wined3d_palette *palette,
DWORD flags, DWORD start, DWORD count, const PALETTEENTRY *entries)
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{
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unsigned int i;
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TRACE("palette %p, flags %#x, start %u, count %u, entries %p.\n",
palette, flags, start, count, entries);
TRACE("Palette flags: %#x.\n", palette->flags);
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if (palette->flags & WINED3D_PALETTE_8BIT_ENTRIES)
{
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const BYTE *entry = (const BYTE *)entries;
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for (i = start; i < count + start; ++i)
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palette->colors[i].rgbRed = *entry++;
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}
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else
{
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for (i = 0; i < count; ++i)
{
palette->colors[i + start].rgbRed = entries[i].peRed;
palette->colors[i + start].rgbGreen = entries[i].peGreen;
palette->colors[i + start].rgbBlue = entries[i].peBlue;
palette->colors[i + start].rgbReserved = entries[i].peFlags;
}
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/* When WINEDDCAPS_ALLOW256 isn't set we need to override entry 0 with black and 255 with white */
if (!(palette->flags & WINED3D_PALETTE_ALLOW_256))
{
TRACE("WINED3D_PALETTE_ALLOW_256 not set, overriding palette entry 0 with black and 255 with white.\n");
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palette->colors[0].rgbRed = 0;
palette->colors[0].rgbGreen = 0;
palette->colors[0].rgbBlue = 0;
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palette->colors[255].rgbRed = 255;
palette->colors[255].rgbGreen = 255;
palette->colors[255].rgbBlue = 255;
}
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}
return WINED3D_OK;
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}
static HRESULT wined3d_palette_init(struct wined3d_palette *palette, struct wined3d_device *device,
DWORD flags, unsigned int entry_count, const PALETTEENTRY *entries)
{
HRESULT hr;
palette->ref = 1;
palette->device = device;
palette->flags = flags;
palette->size = entry_count;
if (FAILED(hr = wined3d_palette_set_entries(palette, 0, 0, entry_count, entries)))
{
WARN("Failed to set palette entries, hr %#x.\n", hr);
return hr;
}
return WINED3D_OK;
}
HRESULT CDECL wined3d_palette_create(struct wined3d_device *device, DWORD flags,
unsigned int entry_count, const PALETTEENTRY *entries, struct wined3d_palette **palette)
{
struct wined3d_palette *object;
HRESULT hr;
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TRACE("device %p, flags %#x, entry_count %u, entries %p, palette %p.\n",
device, flags, entry_count, entries, palette);
object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
if (!object)
return E_OUTOFMEMORY;
if (FAILED(hr = wined3d_palette_init(object, device, flags, entry_count, entries)))
{
WARN("Failed to initialize palette, hr %#x.\n", hr);
HeapFree(GetProcessHeap(), 0, object);
return hr;
}
TRACE("Created palette %p.\n", object);
*palette = object;
return WINED3D_OK;
}