301 lines
8.6 KiB
C
301 lines
8.6 KiB
C
/*
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* Copyright 2009 Vincent Povirk
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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 "config.h"
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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 "wincodec.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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struct FormatConverter;
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enum pixelformat {
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format_32bppBGR,
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format_32bppBGRA
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};
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typedef HRESULT (*copyfunc)(struct FormatConverter *This, const WICRect *prc,
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UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer, enum pixelformat source_format);
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struct pixelformatinfo {
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enum pixelformat format;
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const WICPixelFormatGUID *guid;
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copyfunc copy_function;
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};
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typedef struct FormatConverter {
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const IWICFormatConverterVtbl *lpVtbl;
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LONG ref;
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IWICBitmapSource *source;
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const struct pixelformatinfo *dst_format, *src_format;
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WICBitmapDitherType dither;
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double alpha_threshold;
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WICBitmapPaletteType palette_type;
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} FormatConverter;
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static HRESULT copypixels_to_32bppBGRA(struct FormatConverter *This, const WICRect *prc,
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UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer, enum pixelformat source_format)
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{
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switch (source_format)
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{
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case format_32bppBGR:
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if (prc)
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{
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HRESULT res;
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UINT x, y;
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res = IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
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if (FAILED(res)) return res;
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/* set all alpha values to 255 */
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for (y=0; y<prc->Height; y++)
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for (x=0; x<prc->Width; x++)
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pbBuffer[cbStride*y+4*x+3] = 0xff;
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}
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return S_OK;
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case format_32bppBGRA:
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if (prc)
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return IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
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return S_OK;
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default:
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return WINCODEC_ERR_UNSUPPORTEDOPERATION;
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}
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}
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static const struct pixelformatinfo supported_formats[] = {
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{format_32bppBGR, &GUID_WICPixelFormat32bppBGR, NULL},
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{format_32bppBGRA, &GUID_WICPixelFormat32bppBGRA, copypixels_to_32bppBGRA},
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{0}
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};
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static const struct pixelformatinfo *get_formatinfo(const WICPixelFormatGUID *format)
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{
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UINT i;
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for (i=0; supported_formats[i].guid; i++)
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if (IsEqualGUID(supported_formats[i].guid, format)) return &supported_formats[i];
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return NULL;
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}
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static HRESULT WINAPI FormatConverter_QueryInterface(IWICFormatConverter *iface, REFIID iid,
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void **ppv)
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{
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FormatConverter *This = (FormatConverter*)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_IWICFormatConverter, iid))
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{
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*ppv = This;
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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 FormatConverter_AddRef(IWICFormatConverter *iface)
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{
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FormatConverter *This = (FormatConverter*)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 FormatConverter_Release(IWICFormatConverter *iface)
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{
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FormatConverter *This = (FormatConverter*)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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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 FormatConverter_GetSize(IWICFormatConverter *iface,
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UINT *puiWidth, UINT *puiHeight)
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{
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FIXME("(%p,%p,%p): stub\n", iface, puiWidth, puiHeight);
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return E_NOTIMPL;
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}
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static HRESULT WINAPI FormatConverter_GetPixelFormat(IWICFormatConverter *iface,
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WICPixelFormatGUID *pPixelFormat)
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{
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FIXME("(%p,%p): stub\n", iface, pPixelFormat);
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return E_NOTIMPL;
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}
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static HRESULT WINAPI FormatConverter_GetResolution(IWICFormatConverter *iface,
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double *pDpiX, double *pDpiY)
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{
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FIXME("(%p,%p,%p): stub\n", iface, pDpiX, pDpiY);
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return E_NOTIMPL;
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}
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static HRESULT WINAPI FormatConverter_CopyPalette(IWICFormatConverter *iface,
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IWICPalette *pIPalette)
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{
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FIXME("(%p,%p): stub\n", iface, pIPalette);
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return E_NOTIMPL;
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}
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static HRESULT WINAPI FormatConverter_CopyPixels(IWICFormatConverter *iface,
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const WICRect *prc, UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer)
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{
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FormatConverter *This = (FormatConverter*)iface;
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TRACE("(%p,%p,%u,%u,%p)\n", iface, prc, cbStride, cbBufferSize, pbBuffer);
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if (This->source)
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return This->dst_format->copy_function(This, prc, cbStride, cbBufferSize,
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pbBuffer, This->src_format->format);
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else
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return WINCODEC_ERR_NOTINITIALIZED;
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}
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static HRESULT WINAPI FormatConverter_Initialize(IWICFormatConverter *iface,
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IWICBitmapSource *pISource, REFWICPixelFormatGUID dstFormat, WICBitmapDitherType dither,
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IWICPalette *pIPalette, double alphaThresholdPercent, WICBitmapPaletteType paletteTranslate)
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{
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FormatConverter *This = (FormatConverter*)iface;
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const struct pixelformatinfo *srcinfo, *dstinfo;
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static INT fixme=0;
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GUID srcFormat;
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HRESULT res;
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TRACE("(%p,%p,%s,%u,%p,%0.1f,%u)\n", iface, pISource, debugstr_guid(dstFormat),
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dither, pIPalette, alphaThresholdPercent, paletteTranslate);
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if (pIPalette && !fixme++) FIXME("ignoring palette");
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if (This->source) return WINCODEC_ERR_WRONGSTATE;
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res = IWICBitmapSource_GetPixelFormat(pISource, &srcFormat);
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if (FAILED(res)) return res;
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srcinfo = get_formatinfo(&srcFormat);
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if (!srcinfo) return WINCODEC_ERR_UNSUPPORTEDPIXELFORMAT;
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dstinfo = get_formatinfo(dstFormat);
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if (!dstinfo) return WINCODEC_ERR_UNSUPPORTEDPIXELFORMAT;
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if (dstinfo->copy_function)
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{
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IWICBitmapSource_AddRef(pISource);
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This->source = pISource;
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This->src_format = srcinfo;
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This->dst_format = dstinfo;
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This->dither = dither;
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This->alpha_threshold = alphaThresholdPercent;
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This->palette_type = paletteTranslate;
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}
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else
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return WINCODEC_ERR_UNSUPPORTEDOPERATION;
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return S_OK;
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}
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static HRESULT WINAPI FormatConverter_CanConvert(IWICFormatConverter *iface,
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REFWICPixelFormatGUID srcPixelFormat, REFWICPixelFormatGUID dstPixelFormat,
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BOOL *pfCanConvert)
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{
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FormatConverter *This = (FormatConverter*)iface;
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const struct pixelformatinfo *srcinfo, *dstinfo;
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TRACE("(%p,%s,%s,%p)\n", iface, debugstr_guid(srcPixelFormat),
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debugstr_guid(dstPixelFormat), pfCanConvert);
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srcinfo = get_formatinfo(srcPixelFormat);
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if (!srcinfo) return WINCODEC_ERR_UNSUPPORTEDPIXELFORMAT;
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dstinfo = get_formatinfo(dstPixelFormat);
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if (!dstinfo) return WINCODEC_ERR_UNSUPPORTEDPIXELFORMAT;
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if (dstinfo->copy_function &&
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SUCCEEDED(dstinfo->copy_function(This, NULL, 0, 0, NULL, dstinfo->format)))
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*pfCanConvert = TRUE;
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else
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*pfCanConvert = FALSE;
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return S_OK;
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}
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static const IWICFormatConverterVtbl FormatConverter_Vtbl = {
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FormatConverter_QueryInterface,
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FormatConverter_AddRef,
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FormatConverter_Release,
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FormatConverter_GetSize,
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FormatConverter_GetPixelFormat,
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FormatConverter_GetResolution,
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FormatConverter_CopyPalette,
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FormatConverter_CopyPixels,
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FormatConverter_Initialize,
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FormatConverter_CanConvert
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};
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HRESULT FormatConverter_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
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{
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FormatConverter *This;
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HRESULT ret;
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TRACE("(%p,%s,%p)\n", pUnkOuter, debugstr_guid(iid), ppv);
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*ppv = NULL;
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if (pUnkOuter) return CLASS_E_NOAGGREGATION;
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This = HeapAlloc(GetProcessHeap(), 0, sizeof(FormatConverter));
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if (!This) return E_OUTOFMEMORY;
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This->lpVtbl = &FormatConverter_Vtbl;
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This->ref = 1;
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This->source = NULL;
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ret = IUnknown_QueryInterface((IUnknown*)This, iid, ppv);
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IUnknown_Release((IUnknown*)This);
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return ret;
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}
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