| /* |
| * Copyright 2013 Nikolay Sivov for CodeWeavers |
| * |
| * 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 <stdarg.h> |
| |
| #define COBJMACROS |
| |
| #include "windef.h" |
| #include "winbase.h" |
| #include "objbase.h" |
| |
| #include "wincodecs_private.h" |
| |
| #include "wine/debug.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(wincodecs); |
| |
| typedef struct BitmapClipper { |
| IWICBitmapClipper IWICBitmapClipper_iface; |
| LONG ref; |
| IWICBitmapSource *source; |
| WICRect rect; |
| CRITICAL_SECTION lock; /* must be held when initialized */ |
| } BitmapClipper; |
| |
| static inline BitmapClipper *impl_from_IWICBitmapClipper(IWICBitmapClipper *iface) |
| { |
| return CONTAINING_RECORD(iface, BitmapClipper, IWICBitmapClipper_iface); |
| } |
| |
| static HRESULT WINAPI BitmapClipper_QueryInterface(IWICBitmapClipper *iface, REFIID iid, |
| void **ppv) |
| { |
| BitmapClipper *This = impl_from_IWICBitmapClipper(iface); |
| TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv); |
| |
| if (!ppv) return E_INVALIDARG; |
| |
| if (IsEqualIID(&IID_IUnknown, iid) || |
| IsEqualIID(&IID_IWICBitmapSource, iid) || |
| IsEqualIID(&IID_IWICBitmapClipper, iid)) |
| { |
| *ppv = &This->IWICBitmapClipper_iface; |
| } |
| else |
| { |
| *ppv = NULL; |
| return E_NOINTERFACE; |
| } |
| |
| IUnknown_AddRef((IUnknown*)*ppv); |
| return S_OK; |
| } |
| |
| static ULONG WINAPI BitmapClipper_AddRef(IWICBitmapClipper *iface) |
| { |
| BitmapClipper *This = impl_from_IWICBitmapClipper(iface); |
| ULONG ref = InterlockedIncrement(&This->ref); |
| |
| TRACE("(%p) refcount=%u\n", iface, ref); |
| |
| return ref; |
| } |
| |
| static ULONG WINAPI BitmapClipper_Release(IWICBitmapClipper *iface) |
| { |
| BitmapClipper *This = impl_from_IWICBitmapClipper(iface); |
| ULONG ref = InterlockedDecrement(&This->ref); |
| |
| TRACE("(%p) refcount=%u\n", iface, ref); |
| |
| if (ref == 0) |
| { |
| This->lock.DebugInfo->Spare[0] = 0; |
| DeleteCriticalSection(&This->lock); |
| if (This->source) IWICBitmapSource_Release(This->source); |
| HeapFree(GetProcessHeap(), 0, This); |
| } |
| |
| return ref; |
| } |
| |
| static HRESULT WINAPI BitmapClipper_GetSize(IWICBitmapClipper *iface, |
| UINT *width, UINT *height) |
| { |
| BitmapClipper *This = impl_from_IWICBitmapClipper(iface); |
| |
| TRACE("(%p,%p,%p)\n", iface, width, height); |
| |
| if (!width || !height) |
| return E_INVALIDARG; |
| |
| if (!This->source) |
| return WINCODEC_ERR_WRONGSTATE; |
| |
| *width = This->rect.Width; |
| *height = This->rect.Height; |
| |
| return S_OK; |
| } |
| |
| static HRESULT WINAPI BitmapClipper_GetPixelFormat(IWICBitmapClipper *iface, |
| WICPixelFormatGUID *format) |
| { |
| BitmapClipper *This = impl_from_IWICBitmapClipper(iface); |
| TRACE("(%p,%p)\n", iface, format); |
| |
| if (!format) |
| return E_INVALIDARG; |
| |
| if (!This->source) |
| return WINCODEC_ERR_WRONGSTATE; |
| |
| return IWICBitmapSource_GetPixelFormat(This->source, format); |
| } |
| |
| static HRESULT WINAPI BitmapClipper_GetResolution(IWICBitmapClipper *iface, |
| double *dpiX, double *dpiY) |
| { |
| BitmapClipper *This = impl_from_IWICBitmapClipper(iface); |
| |
| TRACE("(%p,%p,%p)\n", iface, dpiX, dpiY); |
| |
| if (!dpiX || !dpiY) |
| return E_INVALIDARG; |
| |
| if (!This->source) |
| return WINCODEC_ERR_WRONGSTATE; |
| |
| return IWICBitmapSource_GetResolution(This->source, dpiX, dpiY); |
| } |
| |
| static HRESULT WINAPI BitmapClipper_CopyPalette(IWICBitmapClipper *iface, |
| IWICPalette *palette) |
| { |
| BitmapClipper *This = impl_from_IWICBitmapClipper(iface); |
| |
| TRACE("(%p,%p)\n", iface, palette); |
| |
| if (!palette) |
| return E_INVALIDARG; |
| |
| if (!This->source) |
| return WINCODEC_ERR_WRONGSTATE; |
| |
| return IWICBitmapSource_CopyPalette(This->source, palette); |
| } |
| |
| static HRESULT WINAPI BitmapClipper_CopyPixels(IWICBitmapClipper *iface, |
| const WICRect *rc, UINT stride, UINT buffer_size, BYTE *buffer) |
| { |
| BitmapClipper *This = impl_from_IWICBitmapClipper(iface); |
| WICRect rect; |
| |
| TRACE("(%p,%p,%u,%u,%p)\n", iface, rc, stride, buffer_size, buffer); |
| |
| if (!This->source) |
| return WINCODEC_ERR_WRONGSTATE; |
| |
| if (rc) |
| { |
| rect = *rc; |
| |
| /* transform to source coordinates */ |
| rect.X += This->rect.X; |
| rect.Y += This->rect.Y; |
| |
| if ((rect.X + rect.Width > This->rect.X + This->rect.Width) || |
| (rect.Y + rect.Height > This->rect.Y + This->rect.Height)) |
| return E_INVALIDARG; |
| |
| rc = ▭ |
| } |
| else |
| rc = &This->rect; |
| |
| return IWICBitmapSource_CopyPixels(This->source, rc, stride, buffer_size, buffer); |
| } |
| |
| static HRESULT WINAPI BitmapClipper_Initialize(IWICBitmapClipper *iface, |
| IWICBitmapSource *source, const WICRect *rc) |
| { |
| BitmapClipper *This = impl_from_IWICBitmapClipper(iface); |
| UINT width, height; |
| HRESULT hr = S_OK; |
| |
| TRACE("(%p,%p,%p)\n", iface, source, rc); |
| |
| EnterCriticalSection(&This->lock); |
| |
| if (This->source) |
| { |
| hr = WINCODEC_ERR_WRONGSTATE; |
| goto end; |
| } |
| |
| hr = IWICBitmapSource_GetSize(source, &width, &height); |
| if (FAILED(hr)) goto end; |
| |
| if ((rc->X + rc->Width > width) || (rc->Y + rc->Height > height)) |
| { |
| hr = E_INVALIDARG; |
| goto end; |
| } |
| |
| This->rect = *rc; |
| This->source = source; |
| IWICBitmapSource_AddRef(This->source); |
| |
| end: |
| LeaveCriticalSection(&This->lock); |
| |
| return hr; |
| } |
| |
| static const IWICBitmapClipperVtbl BitmapClipper_Vtbl = { |
| BitmapClipper_QueryInterface, |
| BitmapClipper_AddRef, |
| BitmapClipper_Release, |
| BitmapClipper_GetSize, |
| BitmapClipper_GetPixelFormat, |
| BitmapClipper_GetResolution, |
| BitmapClipper_CopyPalette, |
| BitmapClipper_CopyPixels, |
| BitmapClipper_Initialize |
| }; |
| |
| HRESULT BitmapClipper_Create(IWICBitmapClipper **clipper) |
| { |
| BitmapClipper *This; |
| |
| This = HeapAlloc(GetProcessHeap(), 0, sizeof(BitmapClipper)); |
| if (!This) return E_OUTOFMEMORY; |
| |
| This->IWICBitmapClipper_iface.lpVtbl = &BitmapClipper_Vtbl; |
| This->ref = 1; |
| This->source = NULL; |
| InitializeCriticalSection(&This->lock); |
| This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": BitmapClipper.lock"); |
| |
| *clipper = &This->IWICBitmapClipper_iface; |
| |
| return S_OK; |
| } |