dlls/ddraw/palette.c

   1 /*              DirectDraw - IDirectPalette base interface
   2  *
   3  * Copyright 2006 Stefan Dösinger
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include "config.h"
  21 #include "winerror.h"
  22 #include "wine/debug.h"
  23
  24 #define COBJMACROS
  25
  26 #include <assert.h>
  27 #include <string.h>
  28
  29 #include "ddraw_private.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
  32
  33 /*****************************************************************************
  34  * IDirectDrawPalette::QueryInterface
  35  *
  36  * A usual QueryInterface implementation. Can only Query IUnknown and
  37  * IDirectDrawPalette
  38  *
  39  * Params:
  40  *  refiid: The interface id queried for
  41  *  obj: Address to return the interface pointer at
  42  *
  43  * Returns:
  44  *  S_OK on success
  45  *  E_NOINTERFACE if the requested interface wasn't found
  46  *****************************************************************************/
  47 static HRESULT WINAPI
  48 IDirectDrawPaletteImpl_QueryInterface(IDirectDrawPalette *iface,
  49                                       REFIID refiid,
  50                                       void **obj)
  51 {
  52     ICOM_THIS_FROM(IDirectDrawPaletteImpl, IDirectDrawPalette, iface);
  53     TRACE("(%p)->(%s,%p)\n",This,debugstr_guid(refiid),obj);
  54
  55     if (IsEqualGUID(refiid, &IID_IUnknown)
  56         || IsEqualGUID(refiid, &IID_IDirectDrawPalette))
  57     {
  58         *obj = iface;
  59         IDirectDrawPalette_AddRef(iface);
  60         return S_OK;
  61     }
  62     else
  63     {
  64         *obj = NULL;
  65         return E_NOINTERFACE;
  66     }
  67 }
  68
  69 /*****************************************************************************
  70  * IDirectDrawPaletteImpl::AddRef
  71  *
  72  * Increases the refcount.
  73  *
  74  * Returns:
  75  *  The new refcount
  76  *
  77  *****************************************************************************/
  78 static ULONG WINAPI
  79 IDirectDrawPaletteImpl_AddRef(IDirectDrawPalette *iface)
  80 {
  81     ICOM_THIS_FROM(IDirectDrawPaletteImpl, IDirectDrawPalette, iface);
  82     ULONG ref = InterlockedIncrement(&This->ref);
  83
  84     TRACE("(%p)->() incrementing from %u.\n", This, ref - 1);
  85
  86     return ref;
  87 }
  88
  89 /*****************************************************************************
  90  * IDirectDrawPaletteImpl::Release
  91  *
  92  * Reduces the refcount. If the refcount falls to 0, the object is destroyed
  93  *
  94  * Returns:
  95  *  The new refcount
  96  *
  97  *****************************************************************************/
  98 static ULONG WINAPI
  99 IDirectDrawPaletteImpl_Release(IDirectDrawPalette *iface)
 100 {
 101     ICOM_THIS_FROM(IDirectDrawPaletteImpl, IDirectDrawPalette, iface);
 102     ULONG ref = InterlockedDecrement(&This->ref);
 103
 104     TRACE("(%p)->() decrementing from %u.\n", This, ref + 1);
 105
 106     if (ref == 0)
 107     {
 108         EnterCriticalSection(&ddraw_cs);
 109         IWineD3DPalette_Release(This->wineD3DPalette);
 110         if(This->ifaceToRelease)
 111         {
 112             IUnknown_Release(This->ifaceToRelease);
 113         }
 114         LeaveCriticalSection(&ddraw_cs);
 115         HeapFree(GetProcessHeap(), 0, This);
 116     }
 117
 118     return ref;
 119 }
 120
 121 /*****************************************************************************
 122  * IDirectDrawPalette::Initialize
 123  *
 124  * Initializes the palette. As we start initialized, return
 125  * DDERR_ALREADYINITIALIZED
 126  *
 127  * Params:
 128  *  DD: DirectDraw interface this palette is assigned to
 129  *  Flags: Some flags, as usual
 130  *  ColorTable: The startup color table
 131  *
 132  * Returns:
 133  *  DDERR_ALREADYINITIALIZED
 134  *
 135  *****************************************************************************/
 136 static HRESULT WINAPI
 137 IDirectDrawPaletteImpl_Initialize(IDirectDrawPalette *iface,
 138                                   IDirectDraw *DD,
 139                                   DWORD Flags,
 140                                   PALETTEENTRY *ColorTable)
 141 {
 142     TRACE("(%p)->(%p,%x,%p)\n", iface, DD, Flags, ColorTable);
 143     return DDERR_ALREADYINITIALIZED;
 144 }
 145
 146 /*****************************************************************************
 147  * IDirectDrawPalette::GetCaps
 148  *
 149  * Returns the palette description
 150  *
 151  * Params:
 152  *  Caps: Address to store the caps at
 153  *
 154  * Returns:
 155  *  D3D_OK on success
 156  *  DDERR_INVALIDPARAMS if Caps is NULL
 157  *  For more details, see IWineD3DPalette::GetCaps
 158  *
 159  *****************************************************************************/
 160 static HRESULT WINAPI
 161 IDirectDrawPaletteImpl_GetCaps(IDirectDrawPalette *iface,
 162                                DWORD *Caps)
 163 {
 164     ICOM_THIS_FROM(IDirectDrawPaletteImpl, IDirectDrawPalette, iface);
 165     HRESULT hr;
 166     TRACE("(%p)->(%p): Relay\n", This, Caps);
 167
 168     EnterCriticalSection(&ddraw_cs);
 169     hr = IWineD3DPalette_GetCaps(This->wineD3DPalette, Caps);
 170     LeaveCriticalSection(&ddraw_cs);
 171     return hr;
 172 }
 173
 174 /*****************************************************************************
 175  * IDirectDrawPalette::SetEntries
 176  *
 177  * Sets the palette entries from a PALETTEENTRY structure. WineD3D takes
 178  * care for updating the surface.
 179  *
 180  * Params:
 181  *  Flags: Flags, as usual
 182  *  Start: First palette entry to set
 183  *  Count: Number of entries to set
 184  *  PalEnt: Source entries
 185  *
 186  * Returns:
 187  *  D3D_OK on success
 188  *  DDERR_INVALIDPARAMS if PalEnt is NULL
 189  *  For details, see IWineD3DDevice::SetEntries
 190  *
 191  *****************************************************************************/
 192 static HRESULT WINAPI
 193 IDirectDrawPaletteImpl_SetEntries(IDirectDrawPalette *iface,
 194                                   DWORD Flags,
 195                                   DWORD Start,
 196                                   DWORD Count,
 197                                   PALETTEENTRY *PalEnt)
 198 {
 199     ICOM_THIS_FROM(IDirectDrawPaletteImpl, IDirectDrawPalette, iface);
 200     HRESULT hr;
 201     TRACE("(%p)->(%x,%d,%d,%p): Relay\n", This, Flags, Start, Count, PalEnt);
 202
 203     if(!PalEnt)
 204         return DDERR_INVALIDPARAMS;
 205
 206     EnterCriticalSection(&ddraw_cs);
 207     hr = IWineD3DPalette_SetEntries(This->wineD3DPalette, Flags, Start, Count, PalEnt);
 208     LeaveCriticalSection(&ddraw_cs);
 209     return hr;
 210 }
 211
 212 /*****************************************************************************
 213  * IDirectDrawPalette::GetEntries
 214  *
 215  * Returns the entries stored in this interface.
 216  *
 217  * Params:
 218  *  Flags: Flags :)
 219  *  Start: First entry to return
 220  *  Count: The number of entries to return
 221  *  PalEnt: PALETTEENTRY structure to write the entries to
 222  *
 223  * Returns:
 224  *  D3D_OK on success
 225  *  DDERR_INVALIDPARAMS if PalEnt is NULL
 226  *  For details, see IWineD3DDevice::SetEntries
 227  *
 228  *****************************************************************************/
 229 static HRESULT WINAPI
 230 IDirectDrawPaletteImpl_GetEntries(IDirectDrawPalette *iface,
 231                                   DWORD Flags,
 232                                   DWORD Start,
 233                                   DWORD Count,
 234                                   PALETTEENTRY *PalEnt)
 235 {
 236     ICOM_THIS_FROM(IDirectDrawPaletteImpl, IDirectDrawPalette, iface);
 237     HRESULT hr;
 238     TRACE("(%p)->(%x,%d,%d,%p): Relay\n", This, Flags, Start, Count, PalEnt);
 239
 240     if(!PalEnt)
 241         return DDERR_INVALIDPARAMS;
 242
 243     EnterCriticalSection(&ddraw_cs);
 244     hr = IWineD3DPalette_GetEntries(This->wineD3DPalette, Flags, Start, Count, PalEnt);
 245     LeaveCriticalSection(&ddraw_cs);
 246     return hr;
 247 }
 248
 249 const IDirectDrawPaletteVtbl IDirectDrawPalette_Vtbl =
 250 {
 251     /*** IUnknown ***/
 252     IDirectDrawPaletteImpl_QueryInterface,
 253     IDirectDrawPaletteImpl_AddRef,
 254     IDirectDrawPaletteImpl_Release,
 255     /*** IDirectDrawPalette ***/
 256     IDirectDrawPaletteImpl_GetCaps,
 257     IDirectDrawPaletteImpl_GetEntries,
 258     IDirectDrawPaletteImpl_Initialize,
 259     IDirectDrawPaletteImpl_SetEntries
 260 };