wine/dlls/windowscodecs/palette.c

306 lines
7.9 KiB
C

/*
* Copyright 2009 Vincent Povirk 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 "config.h"
#include <stdarg.h>
#define COBJMACROS
#include "windef.h"
#include "winbase.h"
#include "winreg.h"
#include "objbase.h"
#include "wincodec.h"
#include "wincodecs_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
typedef struct {
IWICPalette IWICPalette_iface;
LONG ref;
UINT count;
WICColor *colors;
WICBitmapPaletteType type;
CRITICAL_SECTION lock; /* must be held when count, colors, or type is accessed */
} PaletteImpl;
static inline PaletteImpl *impl_from_IWICPalette(IWICPalette *iface)
{
return CONTAINING_RECORD(iface, PaletteImpl, IWICPalette_iface);
}
static HRESULT WINAPI PaletteImpl_QueryInterface(IWICPalette *iface, REFIID iid,
void **ppv)
{
PaletteImpl *This = impl_from_IWICPalette(iface);
TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
if (!ppv) return E_INVALIDARG;
if (IsEqualIID(&IID_IUnknown, iid) || IsEqualIID(&IID_IWICPalette, iid))
{
*ppv = This;
}
else
{
*ppv = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown*)*ppv);
return S_OK;
}
static ULONG WINAPI PaletteImpl_AddRef(IWICPalette *iface)
{
PaletteImpl *This = impl_from_IWICPalette(iface);
ULONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
return ref;
}
static ULONG WINAPI PaletteImpl_Release(IWICPalette *iface)
{
PaletteImpl *This = impl_from_IWICPalette(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);
HeapFree(GetProcessHeap(), 0, This->colors);
HeapFree(GetProcessHeap(), 0, This);
}
return ref;
}
static HRESULT WINAPI PaletteImpl_InitializePredefined(IWICPalette *iface,
WICBitmapPaletteType ePaletteType, BOOL fAddTransparentColor)
{
FIXME("(%p,%u,%i): stub\n", iface, ePaletteType, fAddTransparentColor);
return E_NOTIMPL;
}
static HRESULT WINAPI PaletteImpl_InitializeCustom(IWICPalette *iface,
WICColor *pColors, UINT colorCount)
{
PaletteImpl *This = impl_from_IWICPalette(iface);
WICColor *new_colors;
TRACE("(%p,%p,%u)\n", iface, pColors, colorCount);
if (colorCount == 0)
{
new_colors = NULL;
}
else
{
if (!pColors) return E_INVALIDARG;
new_colors = HeapAlloc(GetProcessHeap(), 0, sizeof(WICColor) * colorCount);
if (!new_colors) return E_OUTOFMEMORY;
memcpy(new_colors, pColors, sizeof(WICColor) * colorCount);
}
EnterCriticalSection(&This->lock);
HeapFree(GetProcessHeap(), 0, This->colors);
This->colors = new_colors;
This->count = colorCount;
This->type = WICBitmapPaletteTypeCustom;
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI PaletteImpl_InitializeFromBitmap(IWICPalette *iface,
IWICBitmapSource *pISurface, UINT colorCount, BOOL fAddTransparentColor)
{
FIXME("(%p,%p,%u,%i): stub\n", iface, pISurface, colorCount, fAddTransparentColor);
return E_NOTIMPL;
}
static HRESULT WINAPI PaletteImpl_InitializeFromPalette(IWICPalette *iface,
IWICPalette *pIPalette)
{
FIXME("(%p,%p): stub\n", iface, pIPalette);
return E_NOTIMPL;
}
static HRESULT WINAPI PaletteImpl_GetType(IWICPalette *iface,
WICBitmapPaletteType *pePaletteType)
{
PaletteImpl *This = impl_from_IWICPalette(iface);
TRACE("(%p,%p)\n", iface, pePaletteType);
if (!pePaletteType) return E_INVALIDARG;
EnterCriticalSection(&This->lock);
*pePaletteType = This->type;
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI PaletteImpl_GetColorCount(IWICPalette *iface, UINT *pcCount)
{
PaletteImpl *This = impl_from_IWICPalette(iface);
TRACE("(%p,%p)\n", iface, pcCount);
if (!pcCount) return E_INVALIDARG;
EnterCriticalSection(&This->lock);
*pcCount = This->count;
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI PaletteImpl_GetColors(IWICPalette *iface, UINT colorCount,
WICColor *pColors, UINT *pcActualColors)
{
PaletteImpl *This = impl_from_IWICPalette(iface);
TRACE("(%p,%i,%p,%p)\n", iface, colorCount, pColors, pcActualColors);
if (!pColors || !pcActualColors) return E_INVALIDARG;
EnterCriticalSection(&This->lock);
if (This->count < colorCount) colorCount = This->count;
memcpy(pColors, This->colors, sizeof(WICColor) * colorCount);
*pcActualColors = colorCount;
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI PaletteImpl_IsBlackWhite(IWICPalette *iface, BOOL *pfIsBlackWhite)
{
PaletteImpl *This = impl_from_IWICPalette(iface);
TRACE("(%p,%p)\n", iface, pfIsBlackWhite);
if (!pfIsBlackWhite) return E_INVALIDARG;
EnterCriticalSection(&This->lock);
if (This->type == WICBitmapPaletteTypeFixedBW)
*pfIsBlackWhite = TRUE;
else
*pfIsBlackWhite = FALSE;
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI PaletteImpl_IsGrayscale(IWICPalette *iface, BOOL *pfIsGrayscale)
{
PaletteImpl *This = impl_from_IWICPalette(iface);
TRACE("(%p,%p)\n", iface, pfIsGrayscale);
if (!pfIsGrayscale) return E_INVALIDARG;
EnterCriticalSection(&This->lock);
switch(This->type)
{
case WICBitmapPaletteTypeFixedBW:
case WICBitmapPaletteTypeFixedGray4:
case WICBitmapPaletteTypeFixedGray16:
case WICBitmapPaletteTypeFixedGray256:
*pfIsGrayscale = TRUE;
break;
default:
*pfIsGrayscale = FALSE;
}
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI PaletteImpl_HasAlpha(IWICPalette *iface, BOOL *pfHasAlpha)
{
PaletteImpl *This = impl_from_IWICPalette(iface);
int i;
TRACE("(%p,%p)\n", iface, pfHasAlpha);
if (!pfHasAlpha) return E_INVALIDARG;
*pfHasAlpha = FALSE;
EnterCriticalSection(&This->lock);
for (i=0; i<This->count; i++)
if ((This->colors[i]&0xff000000) != 0xff000000)
{
*pfHasAlpha = TRUE;
break;
}
LeaveCriticalSection(&This->lock);
return S_OK;
}
static const IWICPaletteVtbl PaletteImpl_Vtbl = {
PaletteImpl_QueryInterface,
PaletteImpl_AddRef,
PaletteImpl_Release,
PaletteImpl_InitializePredefined,
PaletteImpl_InitializeCustom,
PaletteImpl_InitializeFromBitmap,
PaletteImpl_InitializeFromPalette,
PaletteImpl_GetType,
PaletteImpl_GetColorCount,
PaletteImpl_GetColors,
PaletteImpl_IsBlackWhite,
PaletteImpl_IsGrayscale,
PaletteImpl_HasAlpha
};
HRESULT PaletteImpl_Create(IWICPalette **palette)
{
PaletteImpl *This;
This = HeapAlloc(GetProcessHeap(), 0, sizeof(PaletteImpl));
if (!This) return E_OUTOFMEMORY;
This->IWICPalette_iface.lpVtbl = &PaletteImpl_Vtbl;
This->ref = 1;
This->count = 0;
This->colors = NULL;
This->type = WICBitmapPaletteTypeCustom;
InitializeCriticalSection(&This->lock);
This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": PaletteImpl.lock");
*palette = (IWICPalette*)This;
return S_OK;
}