dlls/ddraw/palette.c

   1 /*
   2  * Copyright 2006 Stefan Dösinger
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "config.h"
  20 #include "wine/port.h"
  21
  22 #include "ddraw_private.h"
  23
  24 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
  25
  26 /*****************************************************************************
  27  * IDirectDrawPalette::QueryInterface
  28  *
  29  * A usual QueryInterface implementation. Can only Query IUnknown and
  30  * IDirectDrawPalette
  31  *
  32  * Params:
  33  *  refiid: The interface id queried for
  34  *  obj: Address to return the interface pointer at
  35  *
  36  * Returns:
  37  *  S_OK on success
  38  *  E_NOINTERFACE if the requested interface wasn't found
  39  *****************************************************************************/
  40 static HRESULT WINAPI
  41 IDirectDrawPaletteImpl_QueryInterface(IDirectDrawPalette *iface,
  42                                       REFIID refiid,
  43                                       void **obj)
  44 {
  45     TRACE("iface %p, riid %s, object %p.\n", iface, debugstr_guid(refiid), obj);
  46
  47     if (IsEqualGUID(refiid, &IID_IUnknown)
  48         || IsEqualGUID(refiid, &IID_IDirectDrawPalette))
  49     {
  50         *obj = iface;
  51         IDirectDrawPalette_AddRef(iface);
  52         return S_OK;
  53     }
  54     else
  55     {
  56         *obj = NULL;
  57         return E_NOINTERFACE;
  58     }
  59 }
  60
  61 /*****************************************************************************
  62  * IDirectDrawPaletteImpl::AddRef
  63  *
  64  * Increases the refcount.
  65  *
  66  * Returns:
  67  *  The new refcount
  68  *
  69  *****************************************************************************/
  70 static ULONG WINAPI
  71 IDirectDrawPaletteImpl_AddRef(IDirectDrawPalette *iface)
  72 {
  73     IDirectDrawPaletteImpl *This = (IDirectDrawPaletteImpl *)iface;
  74     ULONG ref = InterlockedIncrement(&This->ref);
  75
  76     TRACE("%p increasing refcount to %u.\n", This, ref);
  77
  78     return ref;
  79 }
  80
  81 /*****************************************************************************
  82  * IDirectDrawPaletteImpl::Release
  83  *
  84  * Reduces the refcount. If the refcount falls to 0, the object is destroyed
  85  *
  86  * Returns:
  87  *  The new refcount
  88  *
  89  *****************************************************************************/
  90 static ULONG WINAPI
  91 IDirectDrawPaletteImpl_Release(IDirectDrawPalette *iface)
  92 {
  93     IDirectDrawPaletteImpl *This = (IDirectDrawPaletteImpl *)iface;
  94     ULONG ref = InterlockedDecrement(&This->ref);
  95
  96     TRACE("%p decreasing refcount to %u.\n", This, ref);
  97
  98     if (ref == 0)
  99     {
 100         EnterCriticalSection(&ddraw_cs);
 101         wined3d_palette_decref(This->wineD3DPalette);
 102         if(This->ifaceToRelease)
 103         {
 104             IUnknown_Release(This->ifaceToRelease);
 105         }
 106         LeaveCriticalSection(&ddraw_cs);
 107         HeapFree(GetProcessHeap(), 0, This);
 108     }
 109
 110     return ref;
 111 }
 112
 113 /*****************************************************************************
 114  * IDirectDrawPalette::Initialize
 115  *
 116  * Initializes the palette. As we start initialized, return
 117  * DDERR_ALREADYINITIALIZED
 118  *
 119  * Params:
 120  *  DD: DirectDraw interface this palette is assigned to
 121  *  Flags: Some flags, as usual
 122  *  ColorTable: The startup color table
 123  *
 124  * Returns:
 125  *  DDERR_ALREADYINITIALIZED
 126  *
 127  *****************************************************************************/
 128 static HRESULT WINAPI
 129 IDirectDrawPaletteImpl_Initialize(IDirectDrawPalette *iface,
 130                                   IDirectDraw *DD,
 131                                   DWORD Flags,
 132                                   PALETTEENTRY *ColorTable)
 133 {
 134     TRACE("iface %p, ddraw %p, flags %#x, entries %p.\n",
 135             iface, DD, Flags, ColorTable);
 136
 137     return DDERR_ALREADYINITIALIZED;
 138 }
 139
 140 /*****************************************************************************
 141  * IDirectDrawPalette::GetCaps
 142  *
 143  * Returns the palette description
 144  *
 145  * Params:
 146  *  Caps: Address to store the caps at
 147  *
 148  * Returns:
 149  *  D3D_OK on success
 150  *  DDERR_INVALIDPARAMS if Caps is NULL
 151  *  For more details, see IWineD3DPalette::GetCaps
 152  *
 153  *****************************************************************************/
 154 static HRESULT WINAPI
 155 IDirectDrawPaletteImpl_GetCaps(IDirectDrawPalette *iface,
 156                                DWORD *Caps)
 157 {
 158     IDirectDrawPaletteImpl *This = (IDirectDrawPaletteImpl *)iface;
 159
 160     TRACE("iface %p, caps %p.\n", iface, Caps);
 161
 162     EnterCriticalSection(&ddraw_cs);
 163     *Caps = wined3d_palette_get_flags(This->wineD3DPalette);
 164     LeaveCriticalSection(&ddraw_cs);
 165
 166     return D3D_OK;
 167 }
 168
 169 /*****************************************************************************
 170  * IDirectDrawPalette::SetEntries
 171  *
 172  * Sets the palette entries from a PALETTEENTRY structure. WineD3D takes
 173  * care for updating the surface.
 174  *
 175  * Params:
 176  *  Flags: Flags, as usual
 177  *  Start: First palette entry to set
 178  *  Count: Number of entries to set
 179  *  PalEnt: Source entries
 180  *
 181  * Returns:
 182  *  D3D_OK on success
 183  *  DDERR_INVALIDPARAMS if PalEnt is NULL
 184  *  For details, see IWineD3DDevice::SetEntries
 185  *
 186  *****************************************************************************/
 187 static HRESULT WINAPI
 188 IDirectDrawPaletteImpl_SetEntries(IDirectDrawPalette *iface,
 189                                   DWORD Flags,
 190                                   DWORD Start,
 191                                   DWORD Count,
 192                                   PALETTEENTRY *PalEnt)
 193 {
 194     IDirectDrawPaletteImpl *This = (IDirectDrawPaletteImpl *)iface;
 195     HRESULT hr;
 196
 197     TRACE("iface %p, flags %#x, start %u, count %u, entries %p.\n",
 198             iface, Flags, Start, Count, PalEnt);
 199
 200     if(!PalEnt)
 201         return DDERR_INVALIDPARAMS;
 202
 203     EnterCriticalSection(&ddraw_cs);
 204     hr = wined3d_palette_set_entries(This->wineD3DPalette, Flags, Start, Count, PalEnt);
 205     LeaveCriticalSection(&ddraw_cs);
 206     return hr;
 207 }
 208
 209 /*****************************************************************************
 210  * IDirectDrawPalette::GetEntries
 211  *
 212  * Returns the entries stored in this interface.
 213  *
 214  * Params:
 215  *  Flags: Flags :)
 216  *  Start: First entry to return
 217  *  Count: The number of entries to return
 218  *  PalEnt: PALETTEENTRY structure to write the entries to
 219  *
 220  * Returns:
 221  *  D3D_OK on success
 222  *  DDERR_INVALIDPARAMS if PalEnt is NULL
 223  *  For details, see IWineD3DDevice::SetEntries
 224  *
 225  *****************************************************************************/
 226 static HRESULT WINAPI
 227 IDirectDrawPaletteImpl_GetEntries(IDirectDrawPalette *iface,
 228                                   DWORD Flags,
 229                                   DWORD Start,
 230                                   DWORD Count,
 231                                   PALETTEENTRY *PalEnt)
 232 {
 233     IDirectDrawPaletteImpl *This = (IDirectDrawPaletteImpl *)iface;
 234     HRESULT hr;
 235
 236     TRACE("iface %p, flags %#x, start %u, count %u, entries %p.\n",
 237             iface, Flags, Start, Count, PalEnt);
 238
 239     if(!PalEnt)
 240         return DDERR_INVALIDPARAMS;
 241
 242     EnterCriticalSection(&ddraw_cs);
 243     hr = wined3d_palette_get_entries(This->wineD3DPalette, Flags, Start, Count, PalEnt);
 244     LeaveCriticalSection(&ddraw_cs);
 245     return hr;
 246 }
 247
 248 static const struct IDirectDrawPaletteVtbl ddraw_palette_vtbl =
 249 {
 250     /*** IUnknown ***/
 251     IDirectDrawPaletteImpl_QueryInterface,
 252     IDirectDrawPaletteImpl_AddRef,
 253     IDirectDrawPaletteImpl_Release,
 254     /*** IDirectDrawPalette ***/
 255     IDirectDrawPaletteImpl_GetCaps,
 256     IDirectDrawPaletteImpl_GetEntries,
 257     IDirectDrawPaletteImpl_Initialize,
 258     IDirectDrawPaletteImpl_SetEntries
 259 };
 260
 261 HRESULT ddraw_palette_init(IDirectDrawPaletteImpl *palette,
 262         IDirectDrawImpl *ddraw, DWORD flags, PALETTEENTRY *entries)
 263 {
 264     HRESULT hr;
 265
 266     palette->lpVtbl = &ddraw_palette_vtbl;
 267     palette->ref = 1;
 268
 269     hr = wined3d_palette_create(ddraw->wined3d_device, flags,
 270             entries, palette, &palette->wineD3DPalette);
 271     if (FAILED(hr))
 272     {
 273         WARN("Failed to create wined3d palette, hr %#x.\n", hr);
 274         return hr;
 275     }
 276
 277     palette->ifaceToRelease = (IUnknown *)&ddraw->IDirectDraw7_iface;
 278     IUnknown_AddRef(palette->ifaceToRelease);
 279
 280     return DD_OK;
 281 }