/*
 * IDirect3DStateBlock9 implementation
 *
 * Copyright 2002-2003 Raphael Junqueira
 * Copyright 2002-2003 Jason Edmeades
 * Copyright 2005 Oliver Stieber
 *
 * 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 "d3d9_private.h"

WINE_DEFAULT_DEBUG_CHANNEL(d3d9);

/* IDirect3DStateBlock9 IUnknown parts follow: */
static HRESULT WINAPI IDirect3DStateBlock9Impl_QueryInterface(LPDIRECT3DSTATEBLOCK9 iface, REFIID riid, LPVOID* ppobj) {
    IDirect3DStateBlock9Impl *This = (IDirect3DStateBlock9Impl *)iface;

    TRACE("iface %p, riid %s, object %p.\n", iface, debugstr_guid(riid), ppobj);

    if (IsEqualGUID(riid, &IID_IUnknown)
        || IsEqualGUID(riid, &IID_IDirect3DStateBlock9)) {
        IDirect3DStateBlock9_AddRef(iface);
        *ppobj = This;
        return S_OK;
    }

    WARN("(%p)->(%s,%p),not found\n", This, debugstr_guid(riid), ppobj);
    *ppobj = NULL;
    return E_NOINTERFACE;
}

static ULONG WINAPI IDirect3DStateBlock9Impl_AddRef(LPDIRECT3DSTATEBLOCK9 iface) {
    IDirect3DStateBlock9Impl *This = (IDirect3DStateBlock9Impl *)iface;
    ULONG ref = InterlockedIncrement(&This->ref);

    TRACE("%p increasing refcount to %u.\n", iface, ref);

    return ref;
}

static ULONG WINAPI IDirect3DStateBlock9Impl_Release(LPDIRECT3DSTATEBLOCK9 iface) {
    IDirect3DStateBlock9Impl *This = (IDirect3DStateBlock9Impl *)iface;
    ULONG ref = InterlockedDecrement(&This->ref);

    TRACE("%p decreasing refcount to %u.\n", iface, ref);

    if (ref == 0) {
        wined3d_mutex_lock();
        IWineD3DStateBlock_Release(This->wineD3DStateBlock);
        wined3d_mutex_unlock();

        IDirect3DDevice9Ex_Release(This->parentDevice);
        HeapFree(GetProcessHeap(), 0, This);
    }
    return ref;
}

/* IDirect3DStateBlock9 Interface follow: */
static HRESULT WINAPI IDirect3DStateBlock9Impl_GetDevice(LPDIRECT3DSTATEBLOCK9 iface, IDirect3DDevice9** ppDevice) {
    IDirect3DStateBlock9Impl *This = (IDirect3DStateBlock9Impl *)iface;
    IWineD3DDevice *wined3d_device;
    HRESULT hr;

    TRACE("iface %p, device %p.\n", iface, ppDevice);

    wined3d_mutex_lock();
    hr = IWineD3DStateBlock_GetDevice(This->wineD3DStateBlock, &wined3d_device);
    if (SUCCEEDED(hr))
    {
        IWineD3DDevice_GetParent(wined3d_device, (IUnknown **)ppDevice);
        IWineD3DDevice_Release(wined3d_device);
    }
    wined3d_mutex_unlock();

    return hr;
}

static HRESULT WINAPI IDirect3DStateBlock9Impl_Capture(LPDIRECT3DSTATEBLOCK9 iface) {
    IDirect3DStateBlock9Impl *This = (IDirect3DStateBlock9Impl *)iface;
    HRESULT hr;

    TRACE("iface %p.\n", iface);

    wined3d_mutex_lock();
    hr = IWineD3DStateBlock_Capture(This->wineD3DStateBlock);
    wined3d_mutex_unlock();

    return hr;
}

static HRESULT WINAPI IDirect3DStateBlock9Impl_Apply(LPDIRECT3DSTATEBLOCK9 iface) {
    IDirect3DStateBlock9Impl *This = (IDirect3DStateBlock9Impl *)iface;
    HRESULT hr;

    TRACE("iface %p.\n", iface);

    wined3d_mutex_lock();
    hr = IWineD3DStateBlock_Apply(This->wineD3DStateBlock);
    wined3d_mutex_unlock();

    return hr;
}


static const IDirect3DStateBlock9Vtbl Direct3DStateBlock9_Vtbl =
{
    /* IUnknown */
    IDirect3DStateBlock9Impl_QueryInterface,
    IDirect3DStateBlock9Impl_AddRef,
    IDirect3DStateBlock9Impl_Release,
    /* IDirect3DStateBlock9 */
    IDirect3DStateBlock9Impl_GetDevice,
    IDirect3DStateBlock9Impl_Capture,
    IDirect3DStateBlock9Impl_Apply
};


/* IDirect3DDevice9 IDirect3DStateBlock9 Methods follow: */
HRESULT WINAPI IDirect3DDevice9Impl_CreateStateBlock(LPDIRECT3DDEVICE9EX iface, D3DSTATEBLOCKTYPE Type, IDirect3DStateBlock9** ppStateBlock) {
   IDirect3DDevice9Impl *This = (IDirect3DDevice9Impl *)iface;
   IDirect3DStateBlock9Impl* object;
   HRESULT hrc = D3D_OK;

   TRACE("iface %p, type %#x, stateblock %p.\n", iface, Type, ppStateBlock);

   if(Type != D3DSBT_ALL         && Type != D3DSBT_PIXELSTATE &&
      Type != D3DSBT_VERTEXSTATE                              ) {
       WARN("Unexpected stateblock type, returning D3DERR_INVALIDCALL\n");
       return D3DERR_INVALIDCALL;
   }

   object  = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDirect3DStateBlock9Impl));
   if (NULL == object) return E_OUTOFMEMORY;
   object->lpVtbl = &Direct3DStateBlock9_Vtbl;
   object->ref = 1;

   wined3d_mutex_lock();
   hrc = IWineD3DDevice_CreateStateBlock(This->WineD3DDevice, (WINED3DSTATEBLOCKTYPE)Type, &object->wineD3DStateBlock, (IUnknown*)object);
   wined3d_mutex_unlock();

   if(hrc != D3D_OK){
       FIXME("(%p) Call to IWineD3DDevice_CreateStateBlock failed.\n", This);
       HeapFree(GetProcessHeap(), 0, object);
   } else {
        IDirect3DDevice9Ex_AddRef(iface);
        object->parentDevice = iface;
        *ppStateBlock = (IDirect3DStateBlock9*)object;
        TRACE("(%p) : Created stateblock %p\n", This, object);
   }
   TRACE("(%p) returning token (ptr to stateblock) of %p\n", This, object);
   return hrc;
}

HRESULT WINAPI IDirect3DDevice9Impl_BeginStateBlock(IDirect3DDevice9Ex *iface)
{
    IDirect3DDevice9Impl *This = (IDirect3DDevice9Impl *)iface;
    HRESULT hr;

    TRACE("iface %p.\n", iface);

    wined3d_mutex_lock();
    hr = IWineD3DDevice_BeginStateBlock(This->WineD3DDevice);
    wined3d_mutex_unlock();

    return hr;
}

HRESULT WINAPI IDirect3DDevice9Impl_EndStateBlock(IDirect3DDevice9Ex *iface, IDirect3DStateBlock9 **ppSB)
{
    IDirect3DDevice9Impl *This = (IDirect3DDevice9Impl *)iface;
    IWineD3DStateBlock *wineD3DStateBlock;
    IDirect3DStateBlock9Impl *object;
    HRESULT hr;

    TRACE("iface %p, stateblock %p.\n", iface, ppSB);

    /* Tell wineD3D to endstateblock before anything else (in case we run out
     * of memory later and cause locking problems) */
    wined3d_mutex_lock();
    hr=IWineD3DDevice_EndStateBlock(This->WineD3DDevice,&wineD3DStateBlock);
    wined3d_mutex_unlock();

    if (hr!= D3D_OK)
    {
       WARN("IWineD3DDevice_EndStateBlock returned an error\n");
       return hr;
    }
    /* allocate a new IDirectD3DStateBlock */
    object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDirect3DStateBlock9Impl));
    if (!object) return E_OUTOFMEMORY;
    object->ref = 1;
    object->lpVtbl = &Direct3DStateBlock9_Vtbl;
    object->wineD3DStateBlock = wineD3DStateBlock;

    IDirect3DDevice9Ex_AddRef(iface);
    object->parentDevice = iface;
    *ppSB=(IDirect3DStateBlock9*)object;
    TRACE("(%p) Returning *ppSB %p, wineD3DStateBlock %p\n", This, *ppSB, wineD3DStateBlock);
    return D3D_OK;
}