dlls/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 <string.h>
  26
  27 #include "wined3d_private.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
  30
  31 #define SIZE_BITS (WINEDDPCAPS_1BIT | WINEDDPCAPS_2BIT | WINEDDPCAPS_4BIT | WINEDDPCAPS_8BIT)
  32
  33 static HRESULT  WINAPI IWineD3DPaletteImpl_QueryInterface(IWineD3DPalette *iface, REFIID refiid, void **obj) {
  34     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
  35     TRACE("(%p)->(%s,%p)\n",This,debugstr_guid(refiid),obj);
  36
  37     if (IsEqualGUID(refiid, &IID_IUnknown)
  38         || IsEqualGUID(refiid, &IID_IWineD3DPalette)) {
  39         *obj = iface;
  40         IWineD3DPalette_AddRef(iface);
  41         return S_OK;
  42     }
  43     else {
  44         *obj = NULL;
  45         return E_NOINTERFACE;
  46     }
  47 }
  48
  49 static ULONG  WINAPI IWineD3DPaletteImpl_AddRef(IWineD3DPalette *iface) {
  50     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
  51     ULONG ref = InterlockedIncrement(&This->ref);
  52
  53     TRACE("(%p)->() incrementing from %u.\n", This, ref - 1);
  54
  55     return ref;
  56 }
  57
  58 static ULONG  WINAPI IWineD3DPaletteImpl_Release(IWineD3DPalette *iface) {
  59     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
  60     ULONG ref = InterlockedDecrement(&This->ref);
  61
  62     TRACE("(%p)->() decrementing from %u.\n", This, ref + 1);
  63
  64     if (!ref) {
  65         DeleteObject(This->hpal);
  66         HeapFree(GetProcessHeap(), 0, This);
  67         return 0;
  68     }
  69
  70     return ref;
  71 }
  72
  73 /* Not called from the vtable */
  74 DWORD IWineD3DPaletteImpl_Size(DWORD dwFlags) {
  75     switch (dwFlags & SIZE_BITS) {
  76         case WINEDDPCAPS_1BIT: return 2;
  77         case WINEDDPCAPS_2BIT: return 4;
  78         case WINEDDPCAPS_4BIT: return 16;
  79         case WINEDDPCAPS_8BIT: return 256;
  80         default:
  81             FIXME("Unhandled size bits %#x.\n", dwFlags & SIZE_BITS);
  82             return 256;
  83     }
  84 }
  85
  86 static HRESULT  WINAPI IWineD3DPaletteImpl_GetEntries(IWineD3DPalette *iface, DWORD Flags, DWORD Start, DWORD Count, PALETTEENTRY *PalEnt) {
  87     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
  88
  89     TRACE("(%p)->(%08x,%d,%d,%p)\n",This,Flags,Start,Count,PalEnt);
  90
  91     if (Flags != 0) return WINED3DERR_INVALIDCALL; /* unchecked */
  92     if (Start + Count > IWineD3DPaletteImpl_Size(This->Flags))
  93         return WINED3DERR_INVALIDCALL;
  94
  95     if (This->Flags & WINEDDPCAPS_8BITENTRIES)
  96     {
  97         unsigned int i;
  98         LPBYTE entry = (LPBYTE)PalEnt;
  99
 100         for (i=Start; i < Count+Start; i++)
 101             *entry++ = This->palents[i].peRed;
 102     }
 103     else
 104         memcpy(PalEnt, This->palents+Start, Count * sizeof(PALETTEENTRY));
 105
 106     return WINED3D_OK;
 107 }
 108
 109 static HRESULT  WINAPI IWineD3DPaletteImpl_SetEntries(IWineD3DPalette *iface,
 110         DWORD Flags, DWORD Start, DWORD Count, const PALETTEENTRY *PalEnt)
 111 {
 112     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
 113     IWineD3DResourceImpl *res;
 114
 115     TRACE("(%p)->(%08x,%d,%d,%p)\n",This,Flags,Start,Count,PalEnt);
 116     TRACE("Palette flags: %#x\n", This->Flags);
 117
 118     if (This->Flags & WINEDDPCAPS_8BITENTRIES) {
 119         unsigned int i;
 120         const BYTE* entry = (const BYTE*)PalEnt;
 121
 122         for (i=Start; i < Count+Start; i++)
 123             This->palents[i].peRed = *entry++;
 124     }
 125     else {
 126         memcpy(This->palents+Start, PalEnt, Count * sizeof(PALETTEENTRY));
 127
 128         /* When WINEDDCAPS_ALLOW256 isn't set we need to override entry 0 with black and 255 with white */
 129         if(!(This->Flags & WINEDDPCAPS_ALLOW256))
 130         {
 131             TRACE("WINEDDPCAPS_ALLOW256 set, overriding palette entry 0 with black and 255 with white\n");
 132             This->palents[0].peRed = 0;
 133             This->palents[0].peGreen = 0;
 134             This->palents[0].peBlue = 0;
 135
 136             This->palents[255].peRed = 255;
 137             This->palents[255].peGreen = 255;
 138             This->palents[255].peBlue = 255;
 139         }
 140
 141         if (This->hpal)
 142             SetPaletteEntries(This->hpal, Start, Count, This->palents+Start);
 143     }
 144
 145 #if 0
 146     /* Now, if we are in 'depth conversion mode', update the screen palette */
 147     /* FIXME: we need to update the image or we won't get palette fading. */
 148     if (This->ddraw->d->palette_convert != NULL)
 149         This->ddraw->d->palette_convert(palent,This->screen_palents,start,count);
 150 #endif
 151
 152     /* If the palette is attached to the render target, update all render targets */
 153
 154     LIST_FOR_EACH_ENTRY(res, &This->device->resources, IWineD3DResourceImpl, resource.resource_list_entry)
 155     {
 156         if(IWineD3DResource_GetType((IWineD3DResource *) res) == WINED3DRTYPE_SURFACE) {
 157             IWineD3DSurfaceImpl *impl = (IWineD3DSurfaceImpl *) res;
 158             if(impl->palette == This)
 159                 IWineD3DSurface_RealizePalette((IWineD3DSurface *) res);
 160         }
 161     }
 162
 163     return WINED3D_OK;
 164 }
 165
 166 static HRESULT  WINAPI IWineD3DPaletteImpl_GetCaps(IWineD3DPalette *iface, DWORD *Caps) {
 167     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
 168     TRACE("(%p)->(%p)\n", This, Caps);
 169
 170     *Caps = This->Flags;
 171     return WINED3D_OK;
 172 }
 173
 174 static HRESULT  WINAPI IWineD3DPaletteImpl_GetParent(IWineD3DPalette *iface, IUnknown **Parent) {
 175     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
 176     TRACE("(%p)->(%p)\n", This, Parent);
 177
 178     *Parent = This->parent;
 179     IUnknown_AddRef(This->parent);
 180     return WINED3D_OK;
 181 }
 182
 183 const IWineD3DPaletteVtbl IWineD3DPalette_Vtbl =
 184 {
 185     /*** IUnknown ***/
 186     IWineD3DPaletteImpl_QueryInterface,
 187     IWineD3DPaletteImpl_AddRef,
 188     IWineD3DPaletteImpl_Release,
 189     /*** IWineD3DPalette ***/
 190     IWineD3DPaletteImpl_GetParent,
 191     IWineD3DPaletteImpl_GetEntries,
 192     IWineD3DPaletteImpl_GetCaps,
 193     IWineD3DPaletteImpl_SetEntries
 194 };