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 <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, DWORD Flags, DWORD Start, DWORD Count, PALETTEENTRY *PalEnt)
 109 {
 110     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
 111     IWineD3DResourceImpl *res;
 112
 113     TRACE("(%p)->(%08x,%d,%d,%p)\n",This,Flags,Start,Count,PalEnt);
 114
 115     if (This->Flags & WINEDDPCAPS_8BITENTRIES) {
 116         unsigned int i;
 117         const BYTE* entry = (const BYTE*)PalEnt;
 118
 119         for (i=Start; i < Count+Start; i++)
 120             This->palents[i].peRed = *entry++;
 121     }
 122     else {
 123         memcpy(This->palents+Start, PalEnt, Count * sizeof(PALETTEENTRY));
 124
 125         if (This->hpal)
 126             SetPaletteEntries(This->hpal, Start, Count, This->palents+Start);
 127     }
 128
 129 #if 0
 130     /* Now, if we are in 'depth conversion mode', update the screen palette */
 131     /* FIXME: we need to update the image or we won't get palette fading. */
 132     if (This->ddraw->d->palette_convert != NULL)
 133         This->ddraw->d->palette_convert(palent,This->screen_palents,start,count);
 134 #endif
 135
 136     /* If the palette is attached to the render target, update all render targets */
 137
 138     LIST_FOR_EACH_ENTRY(res, &This->wineD3DDevice->resources, IWineD3DResourceImpl, resource.resource_list_entry) {
 139         if(IWineD3DResource_GetType((IWineD3DResource *) res) == WINED3DRTYPE_SURFACE) {
 140             IWineD3DSurfaceImpl *impl = (IWineD3DSurfaceImpl *) res;
 141             if(impl->palette == This)
 142                 IWineD3DSurface_RealizePalette((IWineD3DSurface *) res);
 143         }
 144     }
 145
 146     /* If the palette is the primary palette, set the entries to the device */
 147     if(This->Flags & WINEDDPCAPS_PRIMARYSURFACE) {
 148         unsigned int i;
 149         IWineD3DDeviceImpl *device = This->wineD3DDevice;
 150         PALETTEENTRY *entry = PalEnt;
 151
 152         for(i = Start; i < Start+Count; i++) {
 153             device->palettes[device->currentPalette][i] = *entry++;
 154         }
 155     }
 156
 157     return WINED3D_OK;
 158 }
 159
 160 static HRESULT  WINAPI IWineD3DPaletteImpl_GetCaps(IWineD3DPalette *iface, DWORD *Caps) {
 161     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
 162     TRACE("(%p)->(%p)\n", This, Caps);
 163
 164     *Caps = This->Flags;
 165     return WINED3D_OK;
 166 }
 167
 168 static HRESULT  WINAPI IWineD3DPaletteImpl_GetParent(IWineD3DPalette *iface, IUnknown **Parent) {
 169     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
 170     TRACE("(%p)->(%p)\n", This, Parent);
 171
 172     *Parent = This->parent;
 173     IUnknown_AddRef(This->parent);
 174     return WINED3D_OK;
 175 }
 176
 177 const IWineD3DPaletteVtbl IWineD3DPalette_Vtbl =
 178 {
 179     /*** IUnknown ***/
 180     IWineD3DPaletteImpl_QueryInterface,
 181     IWineD3DPaletteImpl_AddRef,
 182     IWineD3DPaletteImpl_Release,
 183     /*** IWineD3DPalette ***/
 184     IWineD3DPaletteImpl_GetParent,
 185     IWineD3DPaletteImpl_GetEntries,
 186     IWineD3DPaletteImpl_GetCaps,
 187     IWineD3DPaletteImpl_SetEntries
 188 };