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 ddraw_palette_QueryInterface(IDirectDrawPalette *iface, REFIID refiid, void **obj)
  41 {
  42     TRACE("iface %p, riid %s, object %p.\n", iface, debugstr_guid(refiid), obj);
  43
  44     if (IsEqualGUID(refiid, &IID_IUnknown)
  45         || IsEqualGUID(refiid, &IID_IDirectDrawPalette))
  46     {
  47         *obj = iface;
  48         IDirectDrawPalette_AddRef(iface);
  49         return S_OK;
  50     }
  51     else
  52     {
  53         *obj = NULL;
  54         return E_NOINTERFACE;
  55     }
  56 }
  57
  58 /*****************************************************************************
  59  * IDirectDrawPaletteImpl::AddRef
  60  *
  61  * Increases the refcount.
  62  *
  63  * Returns:
  64  *  The new refcount
  65  *
  66  *****************************************************************************/
  67 static ULONG WINAPI ddraw_palette_AddRef(IDirectDrawPalette *iface)
  68 {
  69     struct ddraw_palette *This = impl_from_IDirectDrawPalette(iface);
  70     ULONG ref = InterlockedIncrement(&This->ref);
  71
  72     TRACE("%p increasing refcount to %u.\n", This, ref);
  73
  74     return ref;
  75 }
  76
  77 /*****************************************************************************
  78  * IDirectDrawPaletteImpl::Release
  79  *
  80  * Reduces the refcount. If the refcount falls to 0, the object is destroyed
  81  *
  82  * Returns:
  83  *  The new refcount
  84  *
  85  *****************************************************************************/
  86 static ULONG WINAPI ddraw_palette_Release(IDirectDrawPalette *iface)
  87 {
  88     struct ddraw_palette *This = impl_from_IDirectDrawPalette(iface);
  89     ULONG ref = InterlockedDecrement(&This->ref);
  90
  91     TRACE("%p decreasing refcount to %u.\n", This, ref);
  92
  93     if (ref == 0)
  94     {
  95         wined3d_mutex_lock();
  96         wined3d_palette_decref(This->wineD3DPalette);
  97         if(This->ifaceToRelease)
  98         {
  99             IUnknown_Release(This->ifaceToRelease);
 100         }
 101         wined3d_mutex_unlock();
 102
 103         HeapFree(GetProcessHeap(), 0, This);
 104     }
 105
 106     return ref;
 107 }
 108
 109 /*****************************************************************************
 110  * IDirectDrawPalette::Initialize
 111  *
 112  * Initializes the palette. As we start initialized, return
 113  * DDERR_ALREADYINITIALIZED
 114  *
 115  * Params:
 116  *  DD: DirectDraw interface this palette is assigned to
 117  *  Flags: Some flags, as usual
 118  *  ColorTable: The startup color table
 119  *
 120  * Returns:
 121  *  DDERR_ALREADYINITIALIZED
 122  *
 123  *****************************************************************************/
 124 static HRESULT WINAPI ddraw_palette_Initialize(IDirectDrawPalette *iface,
 125         IDirectDraw *ddraw, DWORD flags, PALETTEENTRY *entries)
 126 {
 127     TRACE("iface %p, ddraw %p, flags %#x, entries %p.\n",
 128             iface, ddraw, flags, entries);
 129
 130     return DDERR_ALREADYINITIALIZED;
 131 }
 132
 133 /*****************************************************************************
 134  * IDirectDrawPalette::GetCaps
 135  *
 136  * Returns the palette description
 137  *
 138  * Params:
 139  *  Caps: Address to store the caps at
 140  *
 141  * Returns:
 142  *  D3D_OK on success
 143  *  DDERR_INVALIDPARAMS if Caps is NULL
 144  *  For more details, see IWineD3DPalette::GetCaps
 145  *
 146  *****************************************************************************/
 147 static HRESULT WINAPI ddraw_palette_GetCaps(IDirectDrawPalette *iface, DWORD *caps)
 148 {
 149     struct ddraw_palette *palette = impl_from_IDirectDrawPalette(iface);
 150
 151     TRACE("iface %p, caps %p.\n", iface, caps);
 152
 153     wined3d_mutex_lock();
 154     *caps = wined3d_palette_get_flags(palette->wineD3DPalette);
 155     wined3d_mutex_unlock();
 156
 157     return D3D_OK;
 158 }
 159
 160 /*****************************************************************************
 161  * IDirectDrawPalette::SetEntries
 162  *
 163  * Sets the palette entries from a PALETTEENTRY structure. WineD3D takes
 164  * care for updating the surface.
 165  *
 166  * Params:
 167  *  Flags: Flags, as usual
 168  *  Start: First palette entry to set
 169  *  Count: Number of entries to set
 170  *  PalEnt: Source entries
 171  *
 172  * Returns:
 173  *  D3D_OK on success
 174  *  DDERR_INVALIDPARAMS if PalEnt is NULL
 175  *  For details, see IWineD3DDevice::SetEntries
 176  *
 177  *****************************************************************************/
 178 static HRESULT WINAPI ddraw_palette_SetEntries(IDirectDrawPalette *iface,
 179         DWORD flags, DWORD start, DWORD count, PALETTEENTRY *entries)
 180 {
 181     struct ddraw_palette *palette = impl_from_IDirectDrawPalette(iface);
 182     HRESULT hr;
 183
 184     TRACE("iface %p, flags %#x, start %u, count %u, entries %p.\n",
 185             iface, flags, start, count, entries);
 186
 187     if (!entries)
 188         return DDERR_INVALIDPARAMS;
 189
 190     wined3d_mutex_lock();
 191     hr = wined3d_palette_set_entries(palette->wineD3DPalette, flags, start, count, entries);
 192     wined3d_mutex_unlock();
 193
 194     return hr;
 195 }
 196
 197 /*****************************************************************************
 198  * IDirectDrawPalette::GetEntries
 199  *
 200  * Returns the entries stored in this interface.
 201  *
 202  * Params:
 203  *  Flags: Flags :)
 204  *  Start: First entry to return
 205  *  Count: The number of entries to return
 206  *  PalEnt: PALETTEENTRY structure to write the entries to
 207  *
 208  * Returns:
 209  *  D3D_OK on success
 210  *  DDERR_INVALIDPARAMS if PalEnt is NULL
 211  *  For details, see IWineD3DDevice::SetEntries
 212  *
 213  *****************************************************************************/
 214 static HRESULT WINAPI ddraw_palette_GetEntries(IDirectDrawPalette *iface,
 215         DWORD flags, DWORD start, DWORD count, PALETTEENTRY *entries)
 216 {
 217     struct ddraw_palette *palette = impl_from_IDirectDrawPalette(iface);
 218     HRESULT hr;
 219
 220     TRACE("iface %p, flags %#x, start %u, count %u, entries %p.\n",
 221             iface, flags, start, count, entries);
 222
 223     if (!entries)
 224         return DDERR_INVALIDPARAMS;
 225
 226     wined3d_mutex_lock();
 227     hr = wined3d_palette_get_entries(palette->wineD3DPalette, flags, start, count, entries);
 228     wined3d_mutex_unlock();
 229
 230     return hr;
 231 }
 232
 233 static const struct IDirectDrawPaletteVtbl ddraw_palette_vtbl =
 234 {
 235     /*** IUnknown ***/
 236     ddraw_palette_QueryInterface,
 237     ddraw_palette_AddRef,
 238     ddraw_palette_Release,
 239     /*** IDirectDrawPalette ***/
 240     ddraw_palette_GetCaps,
 241     ddraw_palette_GetEntries,
 242     ddraw_palette_Initialize,
 243     ddraw_palette_SetEntries
 244 };
 245
 246 struct ddraw_palette *unsafe_impl_from_IDirectDrawPalette(IDirectDrawPalette *iface)
 247 {
 248     if (!iface) return NULL;
 249     assert(iface->lpVtbl == &ddraw_palette_vtbl);
 250     return CONTAINING_RECORD(iface, struct ddraw_palette, IDirectDrawPalette_iface);
 251 }
 252
 253 HRESULT ddraw_palette_init(struct ddraw_palette *palette,
 254         struct ddraw *ddraw, DWORD flags, PALETTEENTRY *entries)
 255 {
 256     HRESULT hr;
 257
 258     palette->IDirectDrawPalette_iface.lpVtbl = &ddraw_palette_vtbl;
 259     palette->ref = 1;
 260
 261     if (FAILED(hr = wined3d_palette_create(ddraw->wined3d_device, flags, entries, &palette->wineD3DPalette)))
 262     {
 263         WARN("Failed to create wined3d palette, hr %#x.\n", hr);
 264         return hr;
 265     }
 266
 267     palette->ifaceToRelease = (IUnknown *)&ddraw->IDirectDraw7_iface;
 268     IUnknown_AddRef(palette->ifaceToRelease);
 269
 270     return DD_OK;
 271 }