colortransform.c

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/*
 * Copyright 2013 Hans Leidekker 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 ColorTransform {
    IWICColorTransform IWICColorTransform_iface;
    LONG ref;
    IWICBitmapSource *dst;
} ColorTransform;
 
static inline ColorTransform *impl_from_IWICColorTransform(IWICColorTransform *iface)
{
    return CONTAINING_RECORD(iface, ColorTransform, IWICColorTransform_iface);
}
 
static HRESULT WINAPI ColorTransform_QueryInterface(IWICColorTransform *iface, REFIID iid,
    void **ppv)
{
    ColorTransform *This = impl_from_IWICColorTransform(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_IWICColorTransform, iid))
    {
        *ppv = &This->IWICColorTransform_iface;
    }
    else
    {
        *ppv = NULL;
        return E_NOINTERFACE;
    }
 
    IUnknown_AddRef((IUnknown*)*ppv);
    return S_OK;
}
 
static ULONG WINAPI ColorTransform_AddRef(IWICColorTransform *iface)
{
    ColorTransform *This = impl_from_IWICColorTransform(iface);
    ULONG ref = InterlockedIncrement(&This->ref);
 
    TRACE("(%p) refcount=%lu\n", iface, ref);
 
    return ref;
}
 
static ULONG WINAPI ColorTransform_Release(IWICColorTransform *iface)
{
    ColorTransform *This = impl_from_IWICColorTransform(iface);
    ULONG ref = InterlockedDecrement(&This->ref);
 
    TRACE("(%p) refcount=%lu\n", iface, ref);
 
    if (ref == 0)
    {
        if (This->dst) IWICBitmapSource_Release(This->dst);
        free(This);
    }
 
    return ref;
}
 
static HRESULT WINAPI ColorTransform_GetSize(IWICColorTransform *iface,
    UINT *puiWidth, UINT *puiHeight)
{
    ColorTransform *This = impl_from_IWICColorTransform(iface);
    TRACE("(%p,%p,%p)\n", iface, puiWidth, puiHeight);
 
    return IWICBitmapSource_GetSize(This->dst, puiWidth, puiHeight);
}
 
static HRESULT WINAPI ColorTransform_GetPixelFormat(IWICColorTransform *iface,
    WICPixelFormatGUID *pPixelFormat)
{
    ColorTransform *This = impl_from_IWICColorTransform(iface);
    TRACE("(%p,%p)\n", iface, pPixelFormat);
 
    return IWICBitmapSource_GetPixelFormat(This->dst, pPixelFormat);
}
 
static HRESULT WINAPI ColorTransform_GetResolution(IWICColorTransform *iface,
    double *pDpiX, double *pDpiY)
{
    ColorTransform *This = impl_from_IWICColorTransform(iface);
    TRACE("(%p,%p,%p)\n", iface, pDpiX, pDpiY);
 
    return IWICBitmapSource_GetResolution(This->dst, pDpiX, pDpiY);
}
 
static HRESULT WINAPI ColorTransform_CopyPalette(IWICColorTransform *iface,
    IWICPalette *pIPalette)
{
    ColorTransform *This = impl_from_IWICColorTransform(iface);
    TRACE("(%p,%p)\n", iface, pIPalette);
 
    return IWICBitmapSource_CopyPalette(This->dst, pIPalette);
}
 
static HRESULT WINAPI ColorTransform_CopyPixels(IWICColorTransform *iface,
    const WICRect *prc, UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer)
{
    ColorTransform *This = impl_from_IWICColorTransform(iface);
    TRACE("(%p,%s,%u,%u,%p)\n", iface, debug_wic_rect(prc), cbStride, cbBufferSize, pbBuffer);
 
    return IWICBitmapSource_CopyPixels(This->dst, prc, cbStride, cbBufferSize, pbBuffer);
}
 
static HRESULT WINAPI ColorTransform_Initialize(IWICColorTransform *iface,
    IWICBitmapSource *pIBitmapSource, IWICColorContext *pIContextSource,
    IWICColorContext *pIContextDest, REFWICPixelFormatGUID pixelFmtDest)
{
    ColorTransform *This = impl_from_IWICColorTransform(iface);
    IWICBitmapSource *dst;
    HRESULT hr;
 
    TRACE("(%p,%p,%p,%p,%s)\n", iface, pIBitmapSource, pIContextSource,
          pIContextDest, debugstr_guid(pixelFmtDest));
 
    FIXME("ignoring color contexts\n");
 
    hr = WICConvertBitmapSource(pixelFmtDest, pIBitmapSource, &dst);
    if (FAILED(hr)) return hr;
 
    if (This->dst) IWICBitmapSource_Release(This->dst);
    This->dst = dst;
    return S_OK;
}
 
static const IWICColorTransformVtbl ColorTransform_Vtbl = {
    ColorTransform_QueryInterface,
    ColorTransform_AddRef,
    ColorTransform_Release,
    ColorTransform_GetSize,
    ColorTransform_GetPixelFormat,
    ColorTransform_GetResolution,
    ColorTransform_CopyPalette,
    ColorTransform_CopyPixels,
    ColorTransform_Initialize
};
 
HRESULT ColorTransform_Create(IWICColorTransform **colortransform)
{
    ColorTransform *This;
 
    if (!colortransform) return E_INVALIDARG;
 
    This = malloc(sizeof(ColorTransform));
    if (!This) return E_OUTOFMEMORY;
 
    This->IWICColorTransform_iface.lpVtbl = &ColorTransform_Vtbl;
    This->ref = 1;
    This->dst = NULL;
 
    *colortransform = &This->IWICColorTransform_iface;
 
    return S_OK;
}