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 (DDPCAPS_1BIT | DDPCAPS_2BIT | DDPCAPS_4BIT | DDPCAPS_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 %lu.\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 %lu.\n", This, ref + 1);
  64
  65     if (!ref) {
  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 DDPCAPS_1BIT: return 2;
  77         case DDPCAPS_2BIT: return 4;
  78         case DDPCAPS_4BIT: return 16;
  79         case DDPCAPS_8BIT: return 256;
  80         default: assert(0); return 256;
  81     }
  82 }
  83
  84 static HRESULT  WINAPI IWineD3DPaletteImpl_GetEntries(IWineD3DPalette *iface, DWORD Flags, DWORD Start, DWORD Count, PALETTEENTRY *PalEnt) {
  85     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
  86
  87     TRACE("(%p)->(%08lx,%ld,%ld,%p)\n",This,Flags,Start,Count,PalEnt);
  88
  89     if (Flags != 0) return WINED3DERR_INVALIDCALL; /* unchecked */
  90     if (Start + Count > IWineD3DPaletteImpl_Size(This->Flags))
  91         return WINED3DERR_INVALIDCALL;
  92
  93     if (This->Flags & DDPCAPS_8BITENTRIES)
  94     {
  95         unsigned int i;
  96         LPBYTE entry = (LPBYTE)PalEnt;
  97
  98         for (i=Start; i < Count+Start; i++)
  99             *entry++ = This->palents[i].peRed;
 100     }
 101     else
 102         memcpy(PalEnt, This->palents+Start, Count * sizeof(PALETTEENTRY));
 103
 104     return WINED3D_OK;
 105 }
 106
 107 static HRESULT  WINAPI IWineD3DPaletteImpl_SetEntries(IWineD3DPalette *iface, DWORD Flags, DWORD Start, DWORD Count, PALETTEENTRY *PalEnt)
 108 {
 109     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
 110     ResourceList *res;
 111
 112     TRACE("(%p)->(%08lx,%ld,%ld,%p)\n",This,Flags,Start,Count,PalEnt);
 113
 114     if (This->Flags & DDPCAPS_8BITENTRIES) {
 115         unsigned int i;
 116         const BYTE* entry = (const BYTE*)PalEnt;
 117
 118         for (i=Start; i < Count+Start; i++)
 119             This->palents[i].peRed = *entry++;
 120     }
 121     else {
 122         memcpy(This->palents+Start, PalEnt, Count * sizeof(PALETTEENTRY));
 123
 124         if (This->hpal)
 125             SetPaletteEntries(This->hpal, Start, Count, This->palents+Start);
 126     }
 127
 128 #if 0
 129     /* Now, if we are in 'depth conversion mode', update the screen palette */
 130     /* FIXME: we need to update the image or we won't get palette fading. */
 131     if (This->ddraw->d->palette_convert != NULL)
 132         This->ddraw->d->palette_convert(palent,This->screen_palents,start,count);
 133 #endif
 134
 135     /* If the palette is attached to the render target, update all render targets */
 136
 137     for(res = This->wineD3DDevice->resources; res != NULL; res=res->next) {
 138         if(IWineD3DResource_GetType(res->resource) == D3DRTYPE_SURFACE) {
 139             IWineD3DSurfaceImpl *impl = (IWineD3DSurfaceImpl *) res->resource;
 140             if(impl->palette == This)
 141                 IWineD3DSurface_RealizePalette( (IWineD3DSurface *) res->resource);
 142         }
 143     }
 144
 145     /* If the palette is the primary palette, set the entries to the device */
 146     if(This->Flags & DDPCAPS_PRIMARYSURFACE) {
 147         unsigned int i;
 148         IWineD3DDeviceImpl *device = This->wineD3DDevice;
 149         PALETTEENTRY *entry = PalEnt;
 150
 151         for(i = Start; i < Start+Count; i++) {
 152             device->palettes[device->currentPalette][i] = *entry++;
 153         }
 154     }
 155
 156     return WINED3D_OK;
 157 }
 158
 159 static HRESULT  WINAPI IWineD3DPaletteImpl_GetCaps(IWineD3DPalette *iface, DWORD *Caps) {
 160     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
 161     TRACE("(%p)->(%p)\n", This, Caps);
 162
 163     *Caps = This->Flags;
 164     return WINED3D_OK;
 165 }
 166
 167 static HRESULT  WINAPI IWineD3DPaletteImpl_GetParent(IWineD3DPalette *iface, IUnknown **Parent) {
 168     IWineD3DPaletteImpl *This = (IWineD3DPaletteImpl *)iface;
 169     TRACE("(%p)->(%p)\n", This, Parent);
 170
 171     *Parent = (IUnknown *) This->parent;
 172     IUnknown_AddRef( (IUnknown *) This->parent);
 173     return WINED3D_OK;
 174 }
 175
 176 const IWineD3DPaletteVtbl IWineD3DPalette_Vtbl =
 177 {
 178     /*** IUnknown ***/
 179     IWineD3DPaletteImpl_QueryInterface,
 180     IWineD3DPaletteImpl_AddRef,
 181     IWineD3DPaletteImpl_Release,
 182     /*** IWineD3DPalette ***/
 183     IWineD3DPaletteImpl_GetParent,
 184     IWineD3DPaletteImpl_GetEntries,
 185     IWineD3DPaletteImpl_GetCaps,
 186     IWineD3DPaletteImpl_SetEntries
 187 };