reactos/dll/directx/wine/wined3d/palette.c

   1 /*              DirectDraw - IDirectPalette base interface
   2  *
   3  * Copyright 1997-2000 Marcus Meissner
   4  * Copyright 2000-2001 TransGaming Technologies Inc.
   5  * Copyright 2006 Stefan Dösinger for CodeWeavers
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21 #include "config.h"
  22 #include "winerror.h"
  23 #include "wine/debug.h"
  24
  25 #include <assert.h>
  26 #include <string.h>
  27
  28 #include "wined3d_private.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
  31
  32 #define SIZE_BITS (WINEDDPCAPS_1BIT | WINEDDPCAPS_2BIT | WINEDDPCAPS_4BIT | WINEDDPCAPS_8BIT)
  33
  34 static HRESULT  WINAPI IWineD3DPaletteImpl_QueryInterface(IWineD3DPalette *iface, REFIID refiid, void **obj) {
  35     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
  36     TRACE("(%p)->(%s,%p)\n",This,debugstr_guid(refiid),obj);
  37
  38     if (IsEqualGUID(refiid, &IID_IUnknown)
  39         || IsEqualGUID(refiid, &IID_IWineD3DPalette)) {
  40         *obj = iface;
  41         IWineD3DPalette_AddRef(iface);
  42         return S_OK;
  43     }
  44     else {
  45         *obj = NULL;
  46         return E_NOINTERFACE;
  47     }
  48 }
  49
  50 static ULONG  WINAPI IWineD3DPaletteImpl_AddRef(IWineD3DPalette *iface) {
  51     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
  52     ULONG ref = InterlockedIncrement(&This->ref);
  53
  54     TRACE("(%p)->() incrementing from %u.\n", This, ref - 1);
  55
  56     return ref;
  57 }
  58
  59 static ULONG  WINAPI IWineD3DPaletteImpl_Release(IWineD3DPalette *iface) {
  60     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
  61     ULONG ref = InterlockedDecrement(&This->ref);
  62
  63     TRACE("(%p)->() decrementing from %u.\n", This, ref + 1);
  64
  65     if (!ref) {
  66         DeleteObject(This->hpal);
  67         HeapFree(GetProcessHeap(), 0, This);
  68         return 0;
  69     }
  70
  71     return ref;
  72 }
  73
  74 /* Not called from the vtable */
  75 DWORD IWineD3DPaletteImpl_Size(DWORD dwFlags) {
  76     switch (dwFlags & SIZE_BITS) {
  77         case WINEDDPCAPS_1BIT: return 2;
  78         case WINEDDPCAPS_2BIT: return 4;
  79         case WINEDDPCAPS_4BIT: return 16;
  80         case WINEDDPCAPS_8BIT: return 256;
  81         default: assert(0); return 256;
  82     }
  83 }
  84
  85 static HRESULT  WINAPI IWineD3DPaletteImpl_GetEntries(IWineD3DPalette *iface, DWORD Flags, DWORD Start, DWORD Count, PALETTEENTRY *PalEnt) {
  86     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
  87
  88     TRACE("(%p)->(%08x,%d,%d,%p)\n",This,Flags,Start,Count,PalEnt);
  89
  90     if (Flags != 0) return WINED3DERR_INVALIDCALL; /* unchecked */
  91     if (Start + Count > IWineD3DPaletteImpl_Size(This->Flags))
  92         return WINED3DERR_INVALIDCALL;
  93
  94     if (This->Flags & WINEDDPCAPS_8BITENTRIES)
  95     {
  96         unsigned int i;
  97         LPBYTE entry = (LPBYTE)PalEnt;
  98
  99         for (i=Start; i < Count+Start; i++)
 100             *entry++ = This->palents[i].peRed;
 101     }
 102     else
 103         memcpy(PalEnt, This->palents+Start, Count * sizeof(PALETTEENTRY));
 104
 105     return WINED3D_OK;
 106 }
 107
 108 static HRESULT  WINAPI IWineD3DPaletteImpl_SetEntries(IWineD3DPalette *iface,
 109         DWORD Flags, DWORD Start, DWORD Count, const PALETTEENTRY *PalEnt)
 110 {
 111     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
 112     IWineD3DResourceImpl *res;
 113
 114     TRACE("(%p)->(%08x,%d,%d,%p)\n",This,Flags,Start,Count,PalEnt);
 115     TRACE("Palette flags: %#x\n", This->Flags);
 116
 117     if (This->Flags & WINEDDPCAPS_8BITENTRIES) {
 118         unsigned int i;
 119         const BYTE* entry = (const BYTE*)PalEnt;
 120
 121         for (i=Start; i < Count+Start; i++)
 122             This->palents[i].peRed = *entry++;
 123     }
 124     else {
 125         memcpy(This->palents+Start, PalEnt, Count * sizeof(PALETTEENTRY));
 126
 127         /* When WINEDDCAPS_ALLOW256 isn't set we need to override entry 0 with black and 255 with white */
 128         if(!(This->Flags & WINEDDPCAPS_ALLOW256))
 129         {
 130             TRACE("WINEDDPCAPS_ALLOW256 set, overriding palette entry 0 with black and 255 with white\n");
 131             This->palents[0].peRed = 0;
 132             This->palents[0].peGreen = 0;
 133             This->palents[0].peBlue = 0;
 134
 135             This->palents[255].peRed = 255;
 136             This->palents[255].peGreen = 255;
 137             This->palents[255].peBlue = 255;
 138         }
 139
 140         if (This->hpal)
 141             SetPaletteEntries(This->hpal, Start, Count, This->palents+Start);
 142     }
 143
 144 #if 0
 145     /* Now, if we are in 'depth conversion mode', update the screen palette */
 146     /* FIXME: we need to update the image or we won't get palette fading. */
 147     if (This->ddraw->d->palette_convert != NULL)
 148         This->ddraw->d->palette_convert(palent,This->screen_palents,start,count);
 149 #endif
 150
 151     /* If the palette is attached to the render target, update all render targets */
 152
 153     LIST_FOR_EACH_ENTRY(res, &This->wineD3DDevice->resources, IWineD3DResourceImpl, resource.resource_list_entry) {
 154         if(IWineD3DResource_GetType((IWineD3DResource *) res) == WINED3DRTYPE_SURFACE) {
 155             IWineD3DSurfaceImpl *impl = (IWineD3DSurfaceImpl *) res;
 156             if(impl->palette == This)
 157                 IWineD3DSurface_RealizePalette((IWineD3DSurface *) res);
 158         }
 159     }
 160
 161     return WINED3D_OK;
 162 }
 163
 164 static HRESULT  WINAPI IWineD3DPaletteImpl_GetCaps(IWineD3DPalette *iface, DWORD *Caps) {
 165     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
 166     TRACE("(%p)->(%p)\n", This, Caps);
 167
 168     *Caps = This->Flags;
 169     return WINED3D_OK;
 170 }
 171
 172 static HRESULT  WINAPI IWineD3DPaletteImpl_GetParent(IWineD3DPalette *iface, IUnknown **Parent) {
 173     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
 174     TRACE("(%p)->(%p)\n", This, Parent);
 175
 176     *Parent = This->parent;
 177     IUnknown_AddRef(This->parent);
 178     return WINED3D_OK;
 179 }
 180
 181 const IWineD3DPaletteVtbl IWineD3DPalette_Vtbl =
 182 {
 183     /*** IUnknown ***/
 184     IWineD3DPaletteImpl_QueryInterface,
 185     IWineD3DPaletteImpl_AddRef,
 186     IWineD3DPaletteImpl_Release,
 187     /*** IWineD3DPalette ***/
 188     IWineD3DPaletteImpl_GetParent,
 189     IWineD3DPaletteImpl_GetEntries,
 190     IWineD3DPaletteImpl_GetCaps,
 191     IWineD3DPaletteImpl_SetEntries
 192 };