Wine Cross Reference
wine/dlls/ddraw/palette.c

   /*
    * Copyright 2006 Stefan Dösinger
    *
    * This library is free software; you can redistribute it and/or
    * modify it under the terms of the GNU Lesser General Public
    * License as published by the Free Software Foundation; either
    * version 2.1 of the License, or (at your option) any later version.
    *
    * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
   */
  
  #include "config.h"
  #include "wine/port.h"
  
  #include "ddraw_private.h"
  
  WINE_DEFAULT_DEBUG_CHANNEL(ddraw);
  
  /*****************************************************************************
   * IDirectDrawPalette::QueryInterface
   *
   * A usual QueryInterface implementation. Can only Query IUnknown and
   * IDirectDrawPalette
   *
   * Params:
   *  refiid: The interface id queried for
   *  obj: Address to return the interface pointer at
   *
   * Returns:
   *  S_OK on success
   *  E_NOINTERFACE if the requested interface wasn't found
   *****************************************************************************/
  static HRESULT WINAPI
  IDirectDrawPaletteImpl_QueryInterface(IDirectDrawPalette *iface,
                                        REFIID refiid,
                                        void **obj)
  {
      TRACE("iface %p, riid %s, object %p.\n", iface, debugstr_guid(refiid), obj);
  
      if (IsEqualGUID(refiid, &IID_IUnknown)
          || IsEqualGUID(refiid, &IID_IDirectDrawPalette))
      {
          *obj = iface;
          IDirectDrawPalette_AddRef(iface);
          return S_OK;
      }
      else
      {
          *obj = NULL;
          return E_NOINTERFACE;
      }
  }
  
  /*****************************************************************************
   * IDirectDrawPaletteImpl::AddRef
   *
   * Increases the refcount.
   *
   * Returns:
   *  The new refcount
   *
   *****************************************************************************/
  static ULONG WINAPI
  IDirectDrawPaletteImpl_AddRef(IDirectDrawPalette *iface)
  {
      IDirectDrawPaletteImpl *This = (IDirectDrawPaletteImpl *)iface;
      ULONG ref = InterlockedIncrement(&This->ref);
  
      TRACE("%p increasing refcount to %u.\n", This, ref);
  
      return ref;
  }
  
  /*****************************************************************************
   * IDirectDrawPaletteImpl::Release
   *
   * Reduces the refcount. If the refcount falls to 0, the object is destroyed
   *
   * Returns:
   *  The new refcount
   *
   *****************************************************************************/
  static ULONG WINAPI
  IDirectDrawPaletteImpl_Release(IDirectDrawPalette *iface)
  {
      IDirectDrawPaletteImpl *This = (IDirectDrawPaletteImpl *)iface;
      ULONG ref = InterlockedDecrement(&This->ref);
  
      TRACE("%p decreasing refcount to %u.\n", This, ref);
  
      if (ref == 0)
      {
         EnterCriticalSection(&ddraw_cs);
         wined3d_palette_decref(This->wineD3DPalette);
         if(This->ifaceToRelease)
         {
             IUnknown_Release(This->ifaceToRelease);
         }
         LeaveCriticalSection(&ddraw_cs);
         HeapFree(GetProcessHeap(), 0, This);
     }
 
     return ref;
 }
 
 /*****************************************************************************
  * IDirectDrawPalette::Initialize
  *
  * Initializes the palette. As we start initialized, return
  * DDERR_ALREADYINITIALIZED
  *
  * Params:
  *  DD: DirectDraw interface this palette is assigned to
  *  Flags: Some flags, as usual
  *  ColorTable: The startup color table
  *
  * Returns:
  *  DDERR_ALREADYINITIALIZED
  *
  *****************************************************************************/
 static HRESULT WINAPI
 IDirectDrawPaletteImpl_Initialize(IDirectDrawPalette *iface,
                                   IDirectDraw *DD,
                                   DWORD Flags,
                                   PALETTEENTRY *ColorTable)
 {
     TRACE("iface %p, ddraw %p, flags %#x, entries %p.\n",
             iface, DD, Flags, ColorTable);
 
     return DDERR_ALREADYINITIALIZED;
 }
 
 /*****************************************************************************
  * IDirectDrawPalette::GetCaps
  *
  * Returns the palette description
  *
  * Params:
  *  Caps: Address to store the caps at
  *
  * Returns:
  *  D3D_OK on success
  *  DDERR_INVALIDPARAMS if Caps is NULL
  *  For more details, see IWineD3DPalette::GetCaps
  *
  *****************************************************************************/
 static HRESULT WINAPI
 IDirectDrawPaletteImpl_GetCaps(IDirectDrawPalette *iface,
                                DWORD *Caps)
 {
     IDirectDrawPaletteImpl *This = (IDirectDrawPaletteImpl *)iface;
 
     TRACE("iface %p, caps %p.\n", iface, Caps);
 
     EnterCriticalSection(&ddraw_cs);
     *Caps = wined3d_palette_get_flags(This->wineD3DPalette);
     LeaveCriticalSection(&ddraw_cs);
 
     return D3D_OK;
 }
 
 /*****************************************************************************
  * IDirectDrawPalette::SetEntries
  *
  * Sets the palette entries from a PALETTEENTRY structure. WineD3D takes
  * care for updating the surface.
  *
  * Params:
  *  Flags: Flags, as usual
  *  Start: First palette entry to set
  *  Count: Number of entries to set
  *  PalEnt: Source entries
  *
  * Returns:
  *  D3D_OK on success
  *  DDERR_INVALIDPARAMS if PalEnt is NULL
  *  For details, see IWineD3DDevice::SetEntries
  *
  *****************************************************************************/
 static HRESULT WINAPI
 IDirectDrawPaletteImpl_SetEntries(IDirectDrawPalette *iface,
                                   DWORD Flags,
                                   DWORD Start,
                                   DWORD Count,
                                   PALETTEENTRY *PalEnt)
 {
     IDirectDrawPaletteImpl *This = (IDirectDrawPaletteImpl *)iface;
     HRESULT hr;
 
     TRACE("iface %p, flags %#x, start %u, count %u, entries %p.\n",
             iface, Flags, Start, Count, PalEnt);
 
     if(!PalEnt)
         return DDERR_INVALIDPARAMS;
 
     EnterCriticalSection(&ddraw_cs);
     hr = wined3d_palette_set_entries(This->wineD3DPalette, Flags, Start, Count, PalEnt);
     LeaveCriticalSection(&ddraw_cs);
     return hr;
 }
 
 /*****************************************************************************
  * IDirectDrawPalette::GetEntries
  *
  * Returns the entries stored in this interface.
  *
  * Params:
  *  Flags: Flags :)
  *  Start: First entry to return
  *  Count: The number of entries to return
  *  PalEnt: PALETTEENTRY structure to write the entries to
  *
  * Returns:
  *  D3D_OK on success
  *  DDERR_INVALIDPARAMS if PalEnt is NULL
  *  For details, see IWineD3DDevice::SetEntries
  *
  *****************************************************************************/
 static HRESULT WINAPI
 IDirectDrawPaletteImpl_GetEntries(IDirectDrawPalette *iface,
                                   DWORD Flags,
                                   DWORD Start,
                                   DWORD Count,
                                   PALETTEENTRY *PalEnt)
 {
     IDirectDrawPaletteImpl *This = (IDirectDrawPaletteImpl *)iface;
     HRESULT hr;
 
     TRACE("iface %p, flags %#x, start %u, count %u, entries %p.\n",
             iface, Flags, Start, Count, PalEnt);
 
     if(!PalEnt)
         return DDERR_INVALIDPARAMS;
 
     EnterCriticalSection(&ddraw_cs);
     hr = wined3d_palette_get_entries(This->wineD3DPalette, Flags, Start, Count, PalEnt);
     LeaveCriticalSection(&ddraw_cs);
     return hr;
 }
 
 static const struct IDirectDrawPaletteVtbl ddraw_palette_vtbl =
 {
     /*** IUnknown ***/
     IDirectDrawPaletteImpl_QueryInterface,
     IDirectDrawPaletteImpl_AddRef,
     IDirectDrawPaletteImpl_Release,
     /*** IDirectDrawPalette ***/
     IDirectDrawPaletteImpl_GetCaps,
     IDirectDrawPaletteImpl_GetEntries,
     IDirectDrawPaletteImpl_Initialize,
     IDirectDrawPaletteImpl_SetEntries
 };
 
 HRESULT ddraw_palette_init(IDirectDrawPaletteImpl *palette,
         IDirectDrawImpl *ddraw, DWORD flags, PALETTEENTRY *entries)
 {
     HRESULT hr;
 
     palette->lpVtbl = &ddraw_palette_vtbl;
     palette->ref = 1;
 
     hr = wined3d_palette_create(ddraw->wined3d_device, flags,
             entries, palette, &palette->wineD3DPalette);
     if (FAILED(hr))
     {
         WARN("Failed to create wined3d palette, hr %#x.\n", hr);
         return hr;
     }
 
     palette->ifaceToRelease = (IUnknown *)&ddraw->IDirectDraw7_iface;
     IUnknown_AddRef(palette->ifaceToRelease);
 
     return DD_OK;
 }