mirror of
https://github.com/reactos/reactos.git
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260 lines
6.6 KiB
C
260 lines
6.6 KiB
C
/*
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* Copyright 2013 Nikolay Sivov for CodeWeavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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#define COBJMACROS
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#include "windef.h"
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#include "winbase.h"
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#include "objbase.h"
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#include "wincodecs_private.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
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typedef struct BitmapClipper {
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IWICBitmapClipper IWICBitmapClipper_iface;
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LONG ref;
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IWICBitmapSource *source;
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WICRect rect;
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CRITICAL_SECTION lock; /* must be held when initialized */
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} BitmapClipper;
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static inline BitmapClipper *impl_from_IWICBitmapClipper(IWICBitmapClipper *iface)
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{
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return CONTAINING_RECORD(iface, BitmapClipper, IWICBitmapClipper_iface);
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}
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static HRESULT WINAPI BitmapClipper_QueryInterface(IWICBitmapClipper *iface, REFIID iid,
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void **ppv)
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{
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BitmapClipper *This = impl_from_IWICBitmapClipper(iface);
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TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
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if (!ppv) return E_INVALIDARG;
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if (IsEqualIID(&IID_IUnknown, iid) ||
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IsEqualIID(&IID_IWICBitmapSource, iid) ||
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IsEqualIID(&IID_IWICBitmapClipper, iid))
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{
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*ppv = &This->IWICBitmapClipper_iface;
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}
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else
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{
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*ppv = NULL;
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return E_NOINTERFACE;
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}
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IUnknown_AddRef((IUnknown*)*ppv);
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return S_OK;
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}
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static ULONG WINAPI BitmapClipper_AddRef(IWICBitmapClipper *iface)
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{
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BitmapClipper *This = impl_from_IWICBitmapClipper(iface);
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ULONG ref = InterlockedIncrement(&This->ref);
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TRACE("(%p) refcount=%u\n", iface, ref);
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return ref;
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}
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static ULONG WINAPI BitmapClipper_Release(IWICBitmapClipper *iface)
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{
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BitmapClipper *This = impl_from_IWICBitmapClipper(iface);
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ULONG ref = InterlockedDecrement(&This->ref);
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TRACE("(%p) refcount=%u\n", iface, ref);
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if (ref == 0)
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{
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This->lock.DebugInfo->Spare[0] = 0;
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DeleteCriticalSection(&This->lock);
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if (This->source) IWICBitmapSource_Release(This->source);
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HeapFree(GetProcessHeap(), 0, This);
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}
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return ref;
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}
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static HRESULT WINAPI BitmapClipper_GetSize(IWICBitmapClipper *iface,
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UINT *width, UINT *height)
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{
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BitmapClipper *This = impl_from_IWICBitmapClipper(iface);
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TRACE("(%p,%p,%p)\n", iface, width, height);
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if (!width || !height)
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return E_INVALIDARG;
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if (!This->source)
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return WINCODEC_ERR_WRONGSTATE;
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*width = This->rect.Width;
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*height = This->rect.Height;
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return S_OK;
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}
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static HRESULT WINAPI BitmapClipper_GetPixelFormat(IWICBitmapClipper *iface,
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WICPixelFormatGUID *format)
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{
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BitmapClipper *This = impl_from_IWICBitmapClipper(iface);
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TRACE("(%p,%p)\n", iface, format);
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if (!format)
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return E_INVALIDARG;
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if (!This->source)
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return WINCODEC_ERR_WRONGSTATE;
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return IWICBitmapSource_GetPixelFormat(This->source, format);
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}
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static HRESULT WINAPI BitmapClipper_GetResolution(IWICBitmapClipper *iface,
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double *dpiX, double *dpiY)
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{
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BitmapClipper *This = impl_from_IWICBitmapClipper(iface);
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TRACE("(%p,%p,%p)\n", iface, dpiX, dpiY);
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if (!dpiX || !dpiY)
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return E_INVALIDARG;
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if (!This->source)
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return WINCODEC_ERR_WRONGSTATE;
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return IWICBitmapSource_GetResolution(This->source, dpiX, dpiY);
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}
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static HRESULT WINAPI BitmapClipper_CopyPalette(IWICBitmapClipper *iface,
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IWICPalette *palette)
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{
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BitmapClipper *This = impl_from_IWICBitmapClipper(iface);
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TRACE("(%p,%p)\n", iface, palette);
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if (!palette)
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return E_INVALIDARG;
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if (!This->source)
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return WINCODEC_ERR_WRONGSTATE;
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return IWICBitmapSource_CopyPalette(This->source, palette);
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}
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static HRESULT WINAPI BitmapClipper_CopyPixels(IWICBitmapClipper *iface,
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const WICRect *rc, UINT stride, UINT buffer_size, BYTE *buffer)
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{
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BitmapClipper *This = impl_from_IWICBitmapClipper(iface);
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WICRect rect;
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TRACE("(%p,%p,%u,%u,%p)\n", iface, rc, stride, buffer_size, buffer);
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if (!This->source)
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return WINCODEC_ERR_WRONGSTATE;
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if (rc)
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{
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rect = *rc;
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/* transform to source coordinates */
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rect.X += This->rect.X;
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rect.Y += This->rect.Y;
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if ((rect.X + rect.Width > This->rect.X + This->rect.Width) ||
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(rect.Y + rect.Height > This->rect.Y + This->rect.Height))
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return E_INVALIDARG;
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rc = ▭
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}
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else
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rc = &This->rect;
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return IWICBitmapSource_CopyPixels(This->source, rc, stride, buffer_size, buffer);
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}
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static HRESULT WINAPI BitmapClipper_Initialize(IWICBitmapClipper *iface,
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IWICBitmapSource *source, const WICRect *rc)
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{
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BitmapClipper *This = impl_from_IWICBitmapClipper(iface);
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UINT width, height;
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HRESULT hr = S_OK;
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TRACE("(%p,%p,%p)\n", iface, source, rc);
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EnterCriticalSection(&This->lock);
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if (This->source)
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{
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hr = WINCODEC_ERR_WRONGSTATE;
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goto end;
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}
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hr = IWICBitmapSource_GetSize(source, &width, &height);
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if (FAILED(hr)) goto end;
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if ((rc->X + rc->Width > width) || (rc->Y + rc->Height > height))
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{
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hr = E_INVALIDARG;
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goto end;
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}
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This->rect = *rc;
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This->source = source;
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IWICBitmapSource_AddRef(This->source);
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end:
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LeaveCriticalSection(&This->lock);
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return hr;
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}
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static const IWICBitmapClipperVtbl BitmapClipper_Vtbl = {
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BitmapClipper_QueryInterface,
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BitmapClipper_AddRef,
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BitmapClipper_Release,
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BitmapClipper_GetSize,
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BitmapClipper_GetPixelFormat,
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BitmapClipper_GetResolution,
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BitmapClipper_CopyPalette,
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BitmapClipper_CopyPixels,
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BitmapClipper_Initialize
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};
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HRESULT BitmapClipper_Create(IWICBitmapClipper **clipper)
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{
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BitmapClipper *This;
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This = HeapAlloc(GetProcessHeap(), 0, sizeof(BitmapClipper));
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if (!This) return E_OUTOFMEMORY;
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This->IWICBitmapClipper_iface.lpVtbl = &BitmapClipper_Vtbl;
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This->ref = 1;
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This->source = NULL;
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InitializeCriticalSection(&This->lock);
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This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": BitmapClipper.lock");
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*clipper = &This->IWICBitmapClipper_iface;
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return S_OK;
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}
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