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 = impl_from_IDirectDrawPalette(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 = impl_from_IDirectDrawPalette(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         wined3d_mutex_lock();
 101         wined3d_palette_decref(This->wineD3DPalette);
 102         if(This->ifaceToRelease)
 103         {
 104             IUnknown_Release(This->ifaceToRelease);
 105         }
 106         wined3d_mutex_unlock();
 107
 108         HeapFree(GetProcessHeap(), 0, This);
 109     }
 110
 111     return ref;
 112 }
 113
 114 /*****************************************************************************
 115  * IDirectDrawPalette::Initialize
 116  *
 117  * Initializes the palette. As we start initialized, return
 118  * DDERR_ALREADYINITIALIZED
 119  *
 120  * Params:
 121  *  DD: DirectDraw interface this palette is assigned to
 122  *  Flags: Some flags, as usual
 123  *  ColorTable: The startup color table
 124  *
 125  * Returns:
 126  *  DDERR_ALREADYINITIALIZED
 127  *
 128  *****************************************************************************/
 129 static HRESULT WINAPI
 130 IDirectDrawPaletteImpl_Initialize(IDirectDrawPalette *iface,
 131                                   IDirectDraw *DD,
 132                                   DWORD Flags,
 133                                   PALETTEENTRY *ColorTable)
 134 {
 135     TRACE("iface %p, ddraw %p, flags %#x, entries %p.\n",
 136             iface, DD, Flags, ColorTable);
 137
 138     return DDERR_ALREADYINITIALIZED;
 139 }
 140
 141 /*****************************************************************************
 142  * IDirectDrawPalette::GetCaps
 143  *
 144  * Returns the palette description
 145  *
 146  * Params:
 147  *  Caps: Address to store the caps at
 148  *
 149  * Returns:
 150  *  D3D_OK on success
 151  *  DDERR_INVALIDPARAMS if Caps is NULL
 152  *  For more details, see IWineD3DPalette::GetCaps
 153  *
 154  *****************************************************************************/
 155 static HRESULT WINAPI
 156 IDirectDrawPaletteImpl_GetCaps(IDirectDrawPalette *iface,
 157                                DWORD *Caps)
 158 {
 159     IDirectDrawPaletteImpl *This = impl_from_IDirectDrawPalette(iface);
 160
 161     TRACE("iface %p, caps %p.\n", iface, Caps);
 162
 163     wined3d_mutex_lock();
 164     *Caps = wined3d_palette_get_flags(This->wineD3DPalette);
 165     wined3d_mutex_unlock();
 166
 167     return D3D_OK;
 168 }
 169
 170 /*****************************************************************************
 171  * IDirectDrawPalette::SetEntries
 172  *
 173  * Sets the palette entries from a PALETTEENTRY structure. WineD3D takes
 174  * care for updating the surface.
 175  *
 176  * Params:
 177  *  Flags: Flags, as usual
 178  *  Start: First palette entry to set
 179  *  Count: Number of entries to set
 180  *  PalEnt: Source entries
 181  *
 182  * Returns:
 183  *  D3D_OK on success
 184  *  DDERR_INVALIDPARAMS if PalEnt is NULL
 185  *  For details, see IWineD3DDevice::SetEntries
 186  *
 187  *****************************************************************************/
 188 static HRESULT WINAPI
 189 IDirectDrawPaletteImpl_SetEntries(IDirectDrawPalette *iface,
 190                                   DWORD Flags,
 191                                   DWORD Start,
 192                                   DWORD Count,
 193                                   PALETTEENTRY *PalEnt)
 194 {
 195     IDirectDrawPaletteImpl *This = impl_from_IDirectDrawPalette(iface);
 196     HRESULT hr;
 197
 198     TRACE("iface %p, flags %#x, start %u, count %u, entries %p.\n",
 199             iface, Flags, Start, Count, PalEnt);
 200
 201     if(!PalEnt)
 202         return DDERR_INVALIDPARAMS;
 203
 204     wined3d_mutex_lock();
 205     hr = wined3d_palette_set_entries(This->wineD3DPalette, Flags, Start, Count, PalEnt);
 206     wined3d_mutex_unlock();
 207
 208     return hr;
 209 }
 210
 211 /*****************************************************************************
 212  * IDirectDrawPalette::GetEntries
 213  *
 214  * Returns the entries stored in this interface.
 215  *
 216  * Params:
 217  *  Flags: Flags :)
 218  *  Start: First entry to return
 219  *  Count: The number of entries to return
 220  *  PalEnt: PALETTEENTRY structure to write the entries to
 221  *
 222  * Returns:
 223  *  D3D_OK on success
 224  *  DDERR_INVALIDPARAMS if PalEnt is NULL
 225  *  For details, see IWineD3DDevice::SetEntries
 226  *
 227  *****************************************************************************/
 228 static HRESULT WINAPI
 229 IDirectDrawPaletteImpl_GetEntries(IDirectDrawPalette *iface,
 230                                   DWORD Flags,
 231                                   DWORD Start,
 232                                   DWORD Count,
 233                                   PALETTEENTRY *PalEnt)
 234 {
 235     IDirectDrawPaletteImpl *This = impl_from_IDirectDrawPalette(iface);
 236     HRESULT hr;
 237
 238     TRACE("iface %p, flags %#x, start %u, count %u, entries %p.\n",
 239             iface, Flags, Start, Count, PalEnt);
 240
 241     if(!PalEnt)
 242         return DDERR_INVALIDPARAMS;
 243
 244     wined3d_mutex_lock();
 245     hr = wined3d_palette_get_entries(This->wineD3DPalette, Flags, Start, Count, PalEnt);
 246     wined3d_mutex_unlock();
 247
 248     return hr;
 249 }
 250
 251 static const struct IDirectDrawPaletteVtbl ddraw_palette_vtbl =
 252 {
 253     /*** IUnknown ***/
 254     IDirectDrawPaletteImpl_QueryInterface,
 255     IDirectDrawPaletteImpl_AddRef,
 256     IDirectDrawPaletteImpl_Release,
 257     /*** IDirectDrawPalette ***/
 258     IDirectDrawPaletteImpl_GetCaps,
 259     IDirectDrawPaletteImpl_GetEntries,
 260     IDirectDrawPaletteImpl_Initialize,
 261     IDirectDrawPaletteImpl_SetEntries
 262 };
 263
 264 IDirectDrawPaletteImpl *unsafe_impl_from_IDirectDrawPalette(IDirectDrawPalette *iface)
 265 {
 266     if (!iface) return NULL;
 267     assert(iface->lpVtbl == &ddraw_palette_vtbl);
 268     return CONTAINING_RECORD(iface, IDirectDrawPaletteImpl, IDirectDrawPalette_iface);
 269 }
 270
 271 HRESULT ddraw_palette_init(IDirectDrawPaletteImpl *palette,
 272         IDirectDrawImpl *ddraw, DWORD flags, PALETTEENTRY *entries)
 273 {
 274     HRESULT hr;
 275
 276     palette->IDirectDrawPalette_iface.lpVtbl = &ddraw_palette_vtbl;
 277     palette->ref = 1;
 278
 279     hr = wined3d_palette_create(ddraw->wined3d_device, flags,
 280             entries, palette, &palette->wineD3DPalette);
 281     if (FAILED(hr))
 282     {
 283         WARN("Failed to create wined3d palette, hr %#x.\n", hr);
 284         return hr;
 285     }
 286
 287     palette->ifaceToRelease = (IUnknown *)&ddraw->IDirectDraw7_iface;
 288     IUnknown_AddRef(palette->ifaceToRelease);
 289
 290     return DD_OK;
 291 }