From 1c55ca966f356030a863479459055c48e98ed1e5 Mon Sep 17 00:00:00 2001 From: wm4 Date: Sat, 11 Jul 2015 20:33:15 +0200 Subject: directwrite: convert to C Unfortunately, nobody ever tested the MinGW dwrite.h header in C. There are multiple glaring mistakes, and the header doesn't even compile by itself. The main issues are overloaded functions (which doesn't work in C), and broken COBJMACROS defines. dwrite.diff contains changes to dwrite.h which make libass work. Warning: the patch lacks a required change to the DrawInlineObject method of IDWriteTextRenderer (missing THIS_). Additionally, these definitions would ideally be provided by dwrite.h: DEFINE_GUID(IID_IDWriteFactory, 0xb859ee5a,0xd838,0x4b5b,0xa2,0xe8,0x1a,0xdc,0x7d,0x93,0xdb,0x48); DEFINE_GUID(IID_IDWritePixelSnapping, 0xeaf3a2da,0xecf4,0x4d24,0xb6,0x44,0xb3,0x4f,0x68,0x42,0x02,0x4b); DEFINE_GUID(IID_IDWriteTextRenderer, 0xef8a8135,0x5cc6,0x45fe,0x88,0x25,0xc5,0xa0,0x72,0x4e,0xb8,0x19); Also, in order to make libass compile out of the box with current MinGW/msys installations, a very stripped down in-tree copy of dwrite.h is provided. --- configure.ac | 8 +- dwrite.diff | 293 +++++++++++++++++++ libass/Makefile.am | 2 +- libass/ass_directwrite.c | 706 +++++++++++++++++++++++++++++++++++++++++++++ libass/ass_directwrite.cpp | 653 ----------------------------------------- libass/dwrite.h | 668 ++++++++++++++++++++++++++++++++++++++++++ 6 files changed, 1670 insertions(+), 660 deletions(-) create mode 100644 dwrite.diff create mode 100644 libass/ass_directwrite.c delete mode 100644 libass/ass_directwrite.cpp create mode 100644 libass/dwrite.h diff --git a/configure.ac b/configure.ac index 61a8533..4c7e37d 100644 --- a/configure.ac +++ b/configure.ac @@ -9,7 +9,6 @@ AC_CONFIG_HEADER([config.h]) # Checks for programs. AC_PROG_CC -AC_PROG_CXX AC_PROG_CPP AM_PROG_CC_C_O AM_PROG_AS @@ -178,14 +177,12 @@ fi if test x$enable_directwrite != xno; then -AC_LANG_PUSH([C++]) -CXXFLAGS="$CXXFLAGS -fno-rtti -fno-exceptions" # Linking to DirectWrite directly only works from Windows AC_MSG_CHECKING([for DIRECTWRITE]) AC_LINK_IFELSE([ AC_LANG_PROGRAM( - [[#include ]], - [[DWRITE_FACTORY_TYPE_SHARED;]],) + [[#include ]], + [[;]],) ], [ AC_DEFINE(CONFIG_DIRECTWRITE, 1, [found DirectWrite]) directwrite=true @@ -194,7 +191,6 @@ AC_LINK_IFELSE([ directwrite=false AC_MSG_RESULT([no]) ]) -AC_LANG_POP([C++]) fi AM_CONDITIONAL([DIRECTWRITE], [test x$directwrite = xtrue]) diff --git a/dwrite.diff b/dwrite.diff new file mode 100644 index 0000000..99ee65b --- /dev/null +++ b/dwrite.diff @@ -0,0 +1,293 @@ +--- /mnt/ssd/mxe/./usr/i686-w64-mingw32.static/include/dwrite.h 2015-06-24 14:42:38.197360516 +0200 ++++ libass/dwrite.h 2015-07-11 21:29:54.004831430 +0200 +@@ -662,8 +662,8 @@ + #define IDWriteBitmapRenderTarget_Release(This) (This)->lpVtbl->Release(This) + #define IDWriteBitmapRenderTarget_DrawGlyphRun(This,baselineOriginX,baselineOriginY,measuringMode,glyphRun,renderingParams,textColor,blackBoxRect) (This)->lpVtbl->DrawGlyphRun(This,baselineOriginX,baselineOriginY,measuringMode,glyphRun,renderingParams,textColor,blackBoxRect) + #define IDWriteBitmapRenderTarget_GetCurrentTransform(This,transform) (This)->lpVtbl->GetCurrentTransform(This,transform) +-#define IDWriteBitmapRenderTarget_GetMemoryDC() (This)->lpVtbl->GetMemoryDC(This) +-#define IDWriteBitmapRenderTarget_GetPixelsPerDip() (This)->lpVtbl->GetPixelsPerDip(This) ++#define IDWriteBitmapRenderTarget_GetMemoryDC(This) (This)->lpVtbl->GetMemoryDC(This) ++#define IDWriteBitmapRenderTarget_GetPixelsPerDip(This) (This)->lpVtbl->GetPixelsPerDip(This) + #define IDWriteBitmapRenderTarget_GetSize(This,size) (This)->lpVtbl->GetSize(This,size) + #define IDWriteBitmapRenderTarget_Resize(This,width,height) (This)->lpVtbl->Resize(This,width,height) + #define IDWriteBitmapRenderTarget_SetCurrentTransform(This,transform) (This)->lpVtbl->SetCurrentTransform(This,transform) +@@ -880,12 +880,12 @@ + #define IDWriteFont_GetFontFamily(This,fontFamily) (This)->lpVtbl->GetFontFamily(This,fontFamily) + #define IDWriteFont_GetInformationalStrings(This,informationalStringID,informationalStrings,exists) (This)->lpVtbl->GetInformationalStrings(This,informationalStringID,informationalStrings,exists) + #define IDWriteFont_GetMetrics(This,fontMetrics) (This)->lpVtbl->GetMetrics(This,fontMetrics) +-#define IDWriteFont_GetSimulations() (This)->lpVtbl->GetSimulations(This) +-#define IDWriteFont_GetStretch() (This)->lpVtbl->GetStretch(This) +-#define IDWriteFont_GetStyle() (This)->lpVtbl->GetStyle(This) +-#define IDWriteFont_GetWeight() (This)->lpVtbl->GetWeight(This) ++#define IDWriteFont_GetSimulations(This) (This)->lpVtbl->GetSimulations(This) ++#define IDWriteFont_GetStretch(This) (This)->lpVtbl->GetStretch(This) ++#define IDWriteFont_GetStyle(This) (This)->lpVtbl->GetStyle(This) ++#define IDWriteFont_GetWeight(This) (This)->lpVtbl->GetWeight(This) + #define IDWriteFont_HasCharacter(This,unicodeValue,exists) (This)->lpVtbl->HasCharacter(This,unicodeValue,exists) +-#define IDWriteFont_IsSymbolFont() (This)->lpVtbl->IsSymbolFont(This) ++#define IDWriteFont_IsSymbolFont(This) (This)->lpVtbl->IsSymbolFont(This) + #endif /*COBJMACROS*/ + + #undef INTERFACE +@@ -925,7 +925,7 @@ + #define IDWriteFontCollection_Release(This) (This)->lpVtbl->Release(This) + #define IDWriteFontCollection_FindFamilyName(This,familyName,index,exists) (This)->lpVtbl->FindFamilyName(This,familyName,index,exists) + #define IDWriteFontCollection_GetFontFamily(This,index,fontFamily) (This)->lpVtbl->GetFontFamily(This,index,fontFamily) +-#define IDWriteFontCollection_GetFontFamilyCount() (This)->lpVtbl->GetFontFamilyCount(This) ++#define IDWriteFontCollection_GetFontFamilyCount(This) (This)->lpVtbl->GetFontFamilyCount(This) + #define IDWriteFontCollection_GetFontFromFontFace(This,fontFace,font) (This)->lpVtbl->GetFontFromFontFace(This,fontFace,font) + #endif /*COBJMACROS*/ + +@@ -1020,18 +1020,18 @@ + #define IDWriteFontFace_AddRef(This) (This)->lpVtbl->AddRef(This) + #define IDWriteFontFace_Release(This) (This)->lpVtbl->Release(This) + #define IDWriteFontFace_GetDesignGlyphMetrics(This,glyphIndices,glyphCount,glyphMetrics,isSideways) (This)->lpVtbl->GetDesignGlyphMetrics(This,glyphIndices,glyphCount,glyphMetrics,isSideways) +-#define IDWriteFontFace_GetFiles(This,fontFiles) (This)->lpVtbl->GetFiles(This,fontFiles) ++#define IDWriteFontFace_GetFiles(This,fontFiles,b) (This)->lpVtbl->GetFiles(This,fontFiles,b) + #define IDWriteFontFace_GetGdiCompatibleMetrics(This,emSize,pixelsPerDip,transform,fontFaceMetrics) (This)->lpVtbl->GetGdiCompatibleMetrics(This,emSize,pixelsPerDip,transform,fontFaceMetrics) + #define IDWriteFontFace_GetGdiCompatibleGlyphMetrics(This,emSize,pixelsPerDip,transform,useGdiNatural,glyphIndices,glyphCount,glyphMetrics,isSideways) (This)->lpVtbl->GetGdiCompatibleGlyphMetrics(This,emSize,pixelsPerDip,transform,useGdiNatural,glyphIndices,glyphCount,glyphMetrics,isSideways) +-#define IDWriteFontFace_GetGlyphCount() (This)->lpVtbl->GetGlyphCount(This) ++#define IDWriteFontFace_GetGlyphCount(This) (This)->lpVtbl->GetGlyphCount(This) + #define IDWriteFontFace_GetGlyphIndices(This,codePoints,codePointCount,glyphIndices) (This)->lpVtbl->GetGlyphIndices(This,codePoints,codePointCount,glyphIndices) + #define IDWriteFontFace_GetGlyphRunOutline(This,emSize,glyphIndices,glyphOffsets,glyphCount,isSideways,isRightToLeft,geometrySink) (This)->lpVtbl->GetGlyphRunOutline(This,emSize,glyphIndices,glyphOffsets,glyphCount,isSideways,isRightToLeft,geometrySink) +-#define IDWriteFontFace_GetIndex() (This)->lpVtbl->GetIndex(This) ++#define IDWriteFontFace_GetIndex(This) (This)->lpVtbl->GetIndex(This) + #define IDWriteFontFace_GetMetrics(This,fontFaceMetrics) (This)->lpVtbl->GetMetrics(This,fontFaceMetrics) + #define IDWriteFontFace_GetRecommendedRenderingMode(This,emSize,pixelsPerDip,measuringMode,renderingParams,renderingMode) (This)->lpVtbl->GetRecommendedRenderingMode(This,emSize,pixelsPerDip,measuringMode,renderingParams,renderingMode) +-#define IDWriteFontFace_GetSimulations() (This)->lpVtbl->GetSimulations(This) +-#define IDWriteFontFace_GetType() (This)->lpVtbl->GetType(This) +-#define IDWriteFontFace_IsSymbolFont() (This)->lpVtbl->IsSymbolFont(This) ++#define IDWriteFontFace_GetSimulations(This) (This)->lpVtbl->GetSimulations(This) ++#define IDWriteFontFace_GetType(This) (This)->lpVtbl->GetType(This) ++#define IDWriteFontFace_IsSymbolFont(This) (This)->lpVtbl->IsSymbolFont(This) + #define IDWriteFontFace_ReleaseFontTable(This,tableContext) (This)->lpVtbl->ReleaseFontTable(This,tableContext) + #define IDWriteFontFace_TryGetFontTable(This,openTypeTableTag,tableData,tableSize,tableContext,exists) (This)->lpVtbl->TryGetFontTable(This,openTypeTableTag,tableData,tableSize,tableContext,exists) + #endif /*COBJMACROS*/ +@@ -1067,7 +1067,7 @@ + #define IDWriteFontList_Release(This) (This)->lpVtbl->Release(This) + #define IDWriteFontList_GetFont(This,index,font) (This)->lpVtbl->GetFont(This,index,font) + #define IDWriteFontList_GetFontCollection(This,fontCollection) (This)->lpVtbl->GetFontCollection(This,fontCollection) +-#define IDWriteFontList_GetFontCount() (This)->lpVtbl->GetFontCount(This) ++#define IDWriteFontList_GetFontCount(This) (This)->lpVtbl->GetFontCount(This) + #endif /*COBJMACROS*/ + + #undef INTERFACE +@@ -1117,7 +1117,7 @@ + #define IDWriteFontFamily_Release(This) (This)->lpVtbl->Release(This) + #define IDWriteFontFamily_GetFont(This,index,font) (This)->lpVtbl->GetFont(This,index,font) + #define IDWriteFontFamily_GetFontCollection(This,fontCollection) (This)->lpVtbl->GetFontCollection(This,fontCollection) +-#define IDWriteFontFamily_GetFontCount() (This)->lpVtbl->GetFontCount(This) ++#define IDWriteFontFamily_GetFontCount(This) (This)->lpVtbl->GetFontCount(This) + #define IDWriteFontFamily_GetFamilyNames(This,names) (This)->lpVtbl->GetFamilyNames(This,names) + #define IDWriteFontFamily_GetFirstMatchingFont(This,weight,stretch,style,matchingFont) (This)->lpVtbl->GetFirstMatchingFont(This,weight,stretch,style,matchingFont) + #define IDWriteFontFamily_GetMatchingFonts(This,weight,stretch,style,matchingFonts) (This)->lpVtbl->GetMatchingFonts(This,weight,stretch,style,matchingFonts) +@@ -1175,7 +1175,7 @@ + #endif + + /* IDWriteFontFileLoader methods */ +- STDMETHOD(CreateStreamFromKey)( ++ STDMETHOD(CreateStreamFromKey)(THIS_ + void const *fontFileReferenceKey, + UINT32 fontFileReferenceKeySize, + IDWriteFontFileStream **fontFileStream) PURE; +@@ -1490,7 +1490,7 @@ + #define IDWriteLocalizedStrings_AddRef(This) (This)->lpVtbl->AddRef(This) + #define IDWriteLocalizedStrings_Release(This) (This)->lpVtbl->Release(This) + #define IDWriteLocalizedStrings_FindLocaleName(This,localeName,index,exists) (This)->lpVtbl->FindLocaleName(This,localeName,index,exists) +-#define IDWriteLocalizedStrings_GetCount() (This)->lpVtbl->GetCount(This) ++#define IDWriteLocalizedStrings_GetCount(This) (This)->lpVtbl->GetCount(This) + #define IDWriteLocalizedStrings_GetLocaleName(This,index,localeName,size) (This)->lpVtbl->GetLocaleName(This,index,localeName,size) + #define IDWriteLocalizedStrings_GetLocaleNameLength(This,index,length) (This)->lpVtbl->GetLocaleNameLength(This,index,length) + #define IDWriteLocalizedStrings_GetString(This,index,stringBuffer,size) (This)->lpVtbl->GetString(This,index,stringBuffer,size) +@@ -1581,11 +1581,11 @@ + #define IDWriteRenderingParams_QueryInterface(This,riid,ppvObject) (This)->lpVtbl->QueryInterface(This,riid,ppvObject) + #define IDWriteRenderingParams_AddRef(This) (This)->lpVtbl->AddRef(This) + #define IDWriteRenderingParams_Release(This) (This)->lpVtbl->Release(This) +-#define IDWriteRenderingParams_GetClearTypeLevel() (This)->lpVtbl->GetClearTypeLevel(This) +-#define IDWriteRenderingParams_GetEnhancedContrast() (This)->lpVtbl->GetEnhancedContrast(This) +-#define IDWriteRenderingParams_GetGamma() (This)->lpVtbl->GetGamma(This) +-#define IDWriteRenderingParams_GetPixelGeometry() (This)->lpVtbl->GetPixelGeometry(This) +-#define IDWriteRenderingParams_GetRenderingMode() (This)->lpVtbl->GetRenderingMode(This) ++#define IDWriteRenderingParams_GetClearTypeLevel(This) (This)->lpVtbl->GetClearTypeLevel(This) ++#define IDWriteRenderingParams_GetEnhancedContrast(This) (This)->lpVtbl->GetEnhancedContrast(This) ++#define IDWriteRenderingParams_GetGamma(This) (This)->lpVtbl->GetGamma(This) ++#define IDWriteRenderingParams_GetPixelGeometry(This) (This)->lpVtbl->GetPixelGeometry(This) ++#define IDWriteRenderingParams_GetRenderingMode(This) (This)->lpVtbl->GetRenderingMode(This) + #endif /*COBJMACROS*/ + + #undef INTERFACE +@@ -1679,7 +1679,7 @@ + #define IDWriteTextAnalysisSource_Release(This) (This)->lpVtbl->Release(This) + #define IDWriteTextAnalysisSource_GetLocaleName(This,textPosition,textLength,localeName) (This)->lpVtbl->GetLocaleName(This,textPosition,textLength,localeName) + #define IDWriteTextAnalysisSource_GetNumberSubstitution(This,textPosition,textLength,numberSubstitution) (This)->lpVtbl->GetNumberSubstitution(This,textPosition,textLength,numberSubstitution) +-#define IDWriteTextAnalysisSource_GetParagraphReadingDirection() (This)->lpVtbl->GetParagraphReadingDirection(This) ++#define IDWriteTextAnalysisSource_GetParagraphReadingDirection(This) (This)->lpVtbl->GetParagraphReadingDirection(This) + #define IDWriteTextAnalysisSource_GetTextAtPosition(This,textPosition,textString,textLength) (This)->lpVtbl->GetTextAtPosition(This,textPosition,textString,textLength) + #define IDWriteTextAnalysisSource_GetTextBeforePosition(This,textPosition,textString,textLength) (This)->lpVtbl->GetTextBeforePosition(This,textPosition,textString,textLength) + #endif /*COBJMACROS*/ +@@ -1866,23 +1866,23 @@ + #define IDWriteTextFormat_QueryInterface(This,riid,ppvObject) (This)->lpVtbl->QueryInterface(This,riid,ppvObject) + #define IDWriteTextFormat_AddRef(This) (This)->lpVtbl->AddRef(This) + #define IDWriteTextFormat_Release(This) (This)->lpVtbl->Release(This) +-#define IDWriteTextFormat_GetFlowDirection() (This)->lpVtbl->GetFlowDirection(This) ++#define IDWriteTextFormat_GetFlowDirection(This) (This)->lpVtbl->GetFlowDirection(This) + #define IDWriteTextFormat_GetFontCollection(This,fontCollection) (This)->lpVtbl->GetFontCollection(This,fontCollection) + #define IDWriteTextFormat_GetFontFamilyName(This,fontFamilyName,nameSize) (This)->lpVtbl->GetFontFamilyName(This,fontFamilyName,nameSize) +-#define IDWriteTextFormat_GetFontFamilyNameLength() (This)->lpVtbl->GetFontFamilyNameLength(This) +-#define IDWriteTextFormat_GetFontSize() (This)->lpVtbl->GetFontSize(This) +-#define IDWriteTextFormat_GetFontStretch() (This)->lpVtbl->GetFontStretch(This) +-#define IDWriteTextFormat_GetFontStyle() (This)->lpVtbl->GetFontStyle(This) +-#define IDWriteTextFormat_GetFontWeight() (This)->lpVtbl->GetFontWeight(This) +-#define IDWriteTextFormat_GetIncrementalTabStop() (This)->lpVtbl->GetIncrementalTabStop(This) ++#define IDWriteTextFormat_GetFontFamilyNameLength(This) (This)->lpVtbl->GetFontFamilyNameLength(This) ++#define IDWriteTextFormat_GetFontSize(This) (This)->lpVtbl->GetFontSize(This) ++#define IDWriteTextFormat_GetFontStretch(This) (This)->lpVtbl->GetFontStretch(This) ++#define IDWriteTextFormat_GetFontStyle(This) (This)->lpVtbl->GetFontStyle(This) ++#define IDWriteTextFormat_GetFontWeight(This) (This)->lpVtbl->GetFontWeight(This) ++#define IDWriteTextFormat_GetIncrementalTabStop(This) (This)->lpVtbl->GetIncrementalTabStop(This) + #define IDWriteTextFormat_GetLineSpacing(This,lineSpacingMethod,lineSpacing,baseline) (This)->lpVtbl->GetLineSpacing(This,lineSpacingMethod,lineSpacing,baseline) + #define IDWriteTextFormat_GetLocaleName(This,localeName,nameSize) (This)->lpVtbl->GetLocaleName(This,localeName,nameSize) +-#define IDWriteTextFormat_GetLocaleNameLength() (This)->lpVtbl->GetLocaleNameLength(This) +-#define IDWriteTextFormat_GetParagraphAlignment() (This)->lpVtbl->GetParagraphAlignment(This) +-#define IDWriteTextFormat_GetReadingDirection() (This)->lpVtbl->GetReadingDirection(This) +-#define IDWriteTextFormat_GetTextAlignment() (This)->lpVtbl->GetTextAlignment(This) ++#define IDWriteTextFormat_GetLocaleNameLength(This) (This)->lpVtbl->GetLocaleNameLength(This) ++#define IDWriteTextFormat_GetParagraphAlignment(This) (This)->lpVtbl->GetParagraphAlignment(This) ++#define IDWriteTextFormat_GetReadingDirection(This) (This)->lpVtbl->GetReadingDirection(This) ++#define IDWriteTextFormat_GetTextAlignment(This) (This)->lpVtbl->GetTextAlignment(This) + #define IDWriteTextFormat_GetTrimming(This,trimmingOptions,trimmingSign) (This)->lpVtbl->GetTrimming(This,trimmingOptions,trimmingSign) +-#define IDWriteTextFormat_GetWordWrapping() (This)->lpVtbl->GetWordWrapping(This) ++#define IDWriteTextFormat_GetWordWrapping(This) (This)->lpVtbl->GetWordWrapping(This) + #define IDWriteTextFormat_SetFlowDirection(This,flowDirection) (This)->lpVtbl->SetFlowDirection(This,flowDirection) + #define IDWriteTextFormat_SetIncrementalTabStop(This,incrementalTabStop) (This)->lpVtbl->SetIncrementalTabStop(This,incrementalTabStop) + #define IDWriteTextFormat_SetLineSpacing(This,lineSpacingMethod,lineSpacing,baseline) (This)->lpVtbl->SetLineSpacing(This,lineSpacingMethod,lineSpacing,baseline) +@@ -1997,32 +1997,32 @@ + DWRITE_TEXT_RANGE textRange) PURE; + STDMETHOD_(FLOAT, GetMaxWidth)(THIS) PURE; + STDMETHOD_(FLOAT, GetMaxHeight)(THIS) PURE; +- STDMETHOD(GetFontCollection)(THIS_ ++ STDMETHOD(GetFontCollection2)(THIS_ + UINT32 currentPosition, + IDWriteFontCollection** fontCollection, + DWRITE_TEXT_RANGE *textRange __MINGW_DEF_ARG_VAL(NULL)) PURE; +- STDMETHOD(GetFontFamilyNameLength)(THIS_ ++ STDMETHOD(GetFontFamilyNameLength2)(THIS_ + UINT32 currentPosition, + UINT32 *nameLength, + DWRITE_TEXT_RANGE *textRange __MINGW_DEF_ARG_VAL(NULL)) PURE; +- STDMETHOD(GetFontFamilyName)(THIS_ ++ STDMETHOD(GetFontFamilyName2)(THIS_ + UINT32 currentPosition, + WCHAR *fontFamilyName, + UINT32 nameSize, + DWRITE_TEXT_RANGE *textRange __MINGW_DEF_ARG_VAL(NULL)) PURE; +- STDMETHOD(GetFontWeight)(THIS_ ++ STDMETHOD(GetFontWeight2)(THIS_ + UINT32 currentPosition, + DWRITE_FONT_WEIGHT *fontWeight, + DWRITE_TEXT_RANGE* textRange __MINGW_DEF_ARG_VAL(NULL)) PURE; +- STDMETHOD(GetFontStyle)(THIS_ ++ STDMETHOD(GetFontStyle2)(THIS_ + UINT32 currentPosition, + DWRITE_FONT_STYLE *fontStyle, + DWRITE_TEXT_RANGE *textRange __MINGW_DEF_ARG_VAL(NULL)) PURE; +- STDMETHOD(GetFontStretch)(THIS_ ++ STDMETHOD(GetFontStretch2)(THIS_ + UINT32 currentPosition, + DWRITE_FONT_STRETCH* fontStretch, + DWRITE_TEXT_RANGE *textRange __MINGW_DEF_ARG_VAL(NULL)) PURE; +- STDMETHOD(GetFontSize)(THIS_ ++ STDMETHOD(GetFontSize2)(THIS_ + UINT32 currentPosition, + FLOAT *fontSize, + DWRITE_TEXT_RANGE *textRange __MINGW_DEF_ARG_VAL(NULL)) PURE; +@@ -2046,11 +2046,11 @@ + UINT32 currentPosition, + IDWriteTypography **typography, + DWRITE_TEXT_RANGE *textRange __MINGW_DEF_ARG_VAL(NULL)) PURE; +- STDMETHOD(GetLocaleNameLength)(THIS_ ++ STDMETHOD(GetLocaleNameLength2)(THIS_ + UINT32 currentPosition, + UINT32 *nameLength, + DWRITE_TEXT_RANGE *textRange __MINGW_DEF_ARG_VAL(NULL)) PURE; +- STDMETHOD(GetLocaleName)(THIS_ ++ STDMETHOD(GetLocaleName2)(THIS_ + UINT32 currentPosition, + WCHAR *localeName, + UINT32 nameSize, +@@ -2101,23 +2101,23 @@ + #define IDWriteTextLayout_QueryInterface(This,riid,ppvObject) (This)->lpVtbl->QueryInterface(This,riid,ppvObject) + #define IDWriteTextLayout_AddRef(This) (This)->lpVtbl->AddRef(This) + #define IDWriteTextLayout_Release(This) (This)->lpVtbl->Release(This) +-#define IDWriteTextLayout_GetFlowDirection() (This)->lpVtbl->GetFlowDirection(This) ++#define IDWriteTextLayout_GetFlowDirection(This) (This)->lpVtbl->GetFlowDirection(This) + #define IDWriteTextLayout_GetFontCollection(This,fontCollection) (This)->lpVtbl->GetFontCollection(This,fontCollection) + #define IDWriteTextLayout_GetFontFamilyName(This,fontFamilyName,nameSize) (This)->lpVtbl->GetFontFamilyName(This,fontFamilyName,nameSize) +-#define IDWriteTextLayout_GetFontFamilyNameLength() (This)->lpVtbl->GetFontFamilyNameLength(This) +-#define IDWriteTextLayout_GetFontSize() (This)->lpVtbl->GetFontSize(This) +-#define IDWriteTextLayout_GetFontStretch() (This)->lpVtbl->GetFontStretch(This) +-#define IDWriteTextLayout_GetFontStyle() (This)->lpVtbl->GetFontStyle(This) +-#define IDWriteTextLayout_GetFontWeight() (This)->lpVtbl->GetFontWeight(This) +-#define IDWriteTextLayout_GetIncrementalTabStop() (This)->lpVtbl->GetIncrementalTabStop(This) ++#define IDWriteTextLayout_GetFontFamilyNameLength(This) (This)->lpVtbl->GetFontFamilyNameLength(This) ++#define IDWriteTextLayout_GetFontSize(This) (This)->lpVtbl->GetFontSize(This) ++#define IDWriteTextLayout_GetFontStretch(This) (This)->lpVtbl->GetFontStretch(This) ++#define IDWriteTextLayout_GetFontStyle(This) (This)->lpVtbl->GetFontStyle(This) ++#define IDWriteTextLayout_GetFontWeight(This) (This)->lpVtbl->GetFontWeight(This) ++#define IDWriteTextLayout_GetIncrementalTabStop(This) (This)->lpVtbl->GetIncrementalTabStop(This) + #define IDWriteTextLayout_GetLineSpacing(This,lineSpacingMethod,lineSpacing,baseline) (This)->lpVtbl->GetLineSpacing(This,lineSpacingMethod,lineSpacing,baseline) + #define IDWriteTextLayout_GetLocaleName(This,localeName,nameSize) (This)->lpVtbl->GetLocaleName(This,localeName,nameSize) +-#define IDWriteTextLayout_GetLocaleNameLength() (This)->lpVtbl->GetLocaleNameLength(This) +-#define IDWriteTextLayout_GetParagraphAlignment() (This)->lpVtbl->GetParagraphAlignment(This) +-#define IDWriteTextLayout_GetReadingDirection() (This)->lpVtbl->GetReadingDirection(This) +-#define IDWriteTextLayout_GetTextAlignment() (This)->lpVtbl->GetTextAlignment(This) ++#define IDWriteTextLayout_GetLocaleNameLength(This) (This)->lpVtbl->GetLocaleNameLength(This) ++#define IDWriteTextLayout_GetParagraphAlignment(This) (This)->lpVtbl->GetParagraphAlignment(This) ++#define IDWriteTextLayout_GetReadingDirection(This) (This)->lpVtbl->GetReadingDirection(This) ++#define IDWriteTextLayout_GetTextAlignment(This) (This)->lpVtbl->GetTextAlignment(This) + #define IDWriteTextLayout_GetTrimming(This,trimmingOptions,trimmingSign) (This)->lpVtbl->GetTrimming(This,trimmingOptions,trimmingSign) +-#define IDWriteTextLayout_GetWordWrapping() (This)->lpVtbl->GetWordWrapping(This) ++#define IDWriteTextLayout_GetWordWrapping(This) (This)->lpVtbl->GetWordWrapping(This) + #define IDWriteTextLayout_SetFlowDirection(This,flowDirection) (This)->lpVtbl->SetFlowDirection(This,flowDirection) + #define IDWriteTextLayout_SetIncrementalTabStop(This,incrementalTabStop) (This)->lpVtbl->SetIncrementalTabStop(This,incrementalTabStop) + #define IDWriteTextLayout_SetLineSpacing(This,lineSpacingMethod,lineSpacing,baseline) (This)->lpVtbl->SetLineSpacing(This,lineSpacingMethod,lineSpacing,baseline) +@@ -2130,19 +2130,19 @@ + #define IDWriteTextLayout_GetClusterMetrics(This,clusterMetrics,maxClusterCount,actualClusterCount) (This)->lpVtbl->GetClusterMetrics(This,clusterMetrics,maxClusterCount,actualClusterCount) + #define IDWriteTextLayout_DetermineMinWidth(This,minWidth) (This)->lpVtbl->DetermineMinWidth(This,minWidth) + #define IDWriteTextLayout_GetDrawingEffect(This,currentPosition,drawingEffect,textRange) (This)->lpVtbl->GetDrawingEffect(This,currentPosition,drawingEffect,textRange) +-#define IDWriteTextLayout_GetFontCollection(This,currentPosition,fontCollection,textRange) (This)->lpVtbl->GetFontCollection(This,currentPosition,fontCollection,textRange) +-#define IDWriteTextLayout_GetFontFamilyName(This,currentPosition,fontFamilyName,nameSize,textRange) (This)->lpVtbl->GetFontFamilyName(This,currentPosition,fontFamilyName,nameSize,textRange) +-#define IDWriteTextLayout_GetFontFamilyNameLength(This,currentPosition,nameLength,textRange) (This)->lpVtbl->GetFontFamilyNameLength(This,currentPosition,nameLength,textRange) +-#define IDWriteTextLayout_GetFontSize(This,currentPosition,fontSize,textRange) (This)->lpVtbl->GetFontSize(This,currentPosition,fontSize,textRange) +-#define IDWriteTextLayout_GetFontStretch(This,currentPosition,fontStretch,textRange) (This)->lpVtbl->GetFontStretch(This,currentPosition,fontStretch,textRange) +-#define IDWriteTextLayout_GetFontStyle(This,currentPosition,fontStyle,textRange) (This)->lpVtbl->GetFontStyle(This,currentPosition,fontStyle,textRange) +-#define IDWriteTextLayout_GetFontWeight(This,currentPosition,fontWeight,textRange) (This)->lpVtbl->GetFontWeight(This,currentPosition,fontWeight,textRange) ++#define IDWriteTextLayout_GetFontCollection2(This,currentPosition,fontCollection,textRange) (This)->lpVtbl->GetFontCollection(This,currentPosition,fontCollection,textRange) ++#define IDWriteTextLayout_GetFontFamilyName2(This,currentPosition,fontFamilyName,nameSize,textRange) (This)->lpVtbl->GetFontFamilyName2(This,currentPosition,fontFamilyName,nameSize,textRange) ++#define IDWriteTextLayout_GetFontFamilyNameLength2(This,currentPosition,nameLength,textRange) (This)->lpVtbl->GetFontFamilyNameLength2(This,currentPosition,nameLength,textRange) ++#define IDWriteTextLayout_GetFontSize2(This,currentPosition,fontSize,textRange) (This)->lpVtbl->GetFontSize2(This,currentPosition,fontSize,textRange) ++#define IDWriteTextLayout_GetFontStretch2(This,currentPosition,fontStretch,textRange) (This)->lpVtbl->GetFontStretch2(This,currentPosition,fontStretch,textRange) ++#define IDWriteTextLayout_GetFontStyle2(This,currentPosition,fontStyle,textRange) (This)->lpVtbl->GetFontStyle2(This,currentPosition,fontStyle,textRange) ++#define IDWriteTextLayout_GetFontWeight2(This,currentPosition,fontWeight,textRange) (This)->lpVtbl->GetFontWeight2(This,currentPosition,fontWeight,textRange) + #define IDWriteTextLayout_GetInlineObject(This,currentPosition,inlineObject,textRange) (This)->lpVtbl->GetInlineObject(This,currentPosition,inlineObject,textRange) + #define IDWriteTextLayout_GetLineMetrics(This,lineMetrics,maxLineCount,actualLineCount) (This)->lpVtbl->GetLineMetrics(This,lineMetrics,maxLineCount,actualLineCount) +-#define IDWriteTextLayout_GetLocaleName(This,currentPosition,localeName,nameSize,textRange) (This)->lpVtbl->GetLocaleName(This,currentPosition,localeName,nameSize,textRange) +-#define IDWriteTextLayout_GetLocaleNameLength(This,currentPosition,nameLength,textRange) (This)->lpVtbl->GetLocaleNameLength(This,currentPosition,nameLength,textRange) +-#define IDWriteTextLayout_GetMaxHeight() (This)->lpVtbl->GetMaxHeight(This) +-#define IDWriteTextLayout_GetMaxWidth() (This)->lpVtbl->GetMaxWidth(This) ++#define IDWriteTextLayout_GetLocaleName2(This,currentPosition,localeName,nameSize,textRange) (This)->lpVtbl->GetLocaleName2(This,currentPosition,localeName,nameSize,textRange) ++#define IDWriteTextLayout_GetLocaleNameLength2(This,currentPosition,nameLength,textRange) (This)->lpVtbl->GetLocaleNameLength2(This,currentPosition,nameLength,textRange) ++#define IDWriteTextLayout_GetMaxHeight(This) (This)->lpVtbl->GetMaxHeight(This) ++#define IDWriteTextLayout_GetMaxWidth(This) (This)->lpVtbl->GetMaxWidth(This) + #define IDWriteTextLayout_GetMetrics(This,textMetrics) (This)->lpVtbl->GetMetrics(This,textMetrics) + #define IDWriteTextLayout_GetOverhangMetrics(This,overhangs) (This)->lpVtbl->GetOverhangMetrics(This,overhangs) + #define IDWriteTextLayout_GetStrikethrough(This,currentPosition,hasStrikethrough,textRange) (This)->lpVtbl->GetStrikethrough(This,currentPosition,hasStrikethrough,textRange) +@@ -2262,7 +2262,7 @@ + #define IDWriteTypography_Release(This) (This)->lpVtbl->Release(This) + #define IDWriteTypography_AddFontFeature(This,fontFeature) (This)->lpVtbl->AddFontFeature(This,fontFeature) + #define IDWriteTypography_GetFontFeature(This,fontFeatureIndex,fontFeature) (This)->lpVtbl->GetFontFeature(This,fontFeatureIndex,fontFeature) +-#define IDWriteTypography_GetFontFeatureCount() (This)->lpVtbl->GetFontFeatureCount(This) ++#define IDWriteTypography_GetFontFeatureCount(This) (This)->lpVtbl->GetFontFeatureCount(This) + #endif /*COBJMACROS*/ + + #ifdef __cplusplus diff --git a/libass/Makefile.am b/libass/Makefile.am index 4e266f1..2d7bc44 100644 --- a/libass/Makefile.am +++ b/libass/Makefile.am @@ -19,7 +19,7 @@ SRC_INTEL_RASTERIZER = x86/rasterizer.asm SRC_RASTERIZER = ass_rasterizer.h ass_rasterizer.c ass_rasterizer_c.c -SRC_DIRECTWRITE = ass_directwrite.cpp ass_directwrite.h +SRC_DIRECTWRITE = ass_directwrite.c ass_directwrite.h dwrite.h lib_LTLIBRARIES = libass.la libass_la_SOURCES = ass.c ass_cache.c ass_font.c ass_fontselect.c ass_render.c \ diff --git a/libass/ass_directwrite.c b/libass/ass_directwrite.c new file mode 100644 index 0000000..483af50 --- /dev/null +++ b/libass/ass_directwrite.c @@ -0,0 +1,706 @@ +/* + * Copyright (C) 2015 Stephan Vedder + * + * This file is part of libass. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#define COBJMACROS + +#include "config.h" + +#include +#include +#include + +#include "dwrite.h" + +DEFINE_GUID(IID_IDWriteFactory, 0xb859ee5a,0xd838,0x4b5b,0xa2,0xe8,0x1a,0xdc,0x7d,0x93,0xdb,0x48); +DEFINE_GUID(IID_IDWritePixelSnapping, 0xeaf3a2da,0xecf4,0x4d24,0xb6,0x44,0xb3,0x4f,0x68,0x42,0x02,0x4b); +DEFINE_GUID(IID_IDWriteTextRenderer, 0xef8a8135,0x5cc6,0x45fe,0x88,0x25,0xc5,0xa0,0x72,0x4e,0xb8,0x19); + +#include "ass_directwrite.h" +#include "ass_utils.h" + +#define NAME_MAX_LENGTH 256 +#define FALLBACK_DEFAULT_FONT L"Arial" + +/* + * The private data stored for every font, detected by this backend. + */ +typedef struct { + IDWriteFont *font; + IDWriteFontFileStream *stream; +} FontPrivate; + +typedef struct { + HMODULE directwrite_lib; + IDWriteFactory *factory; +} ProviderPrivate; + +/** + * Custom text renderer class for logging the fonts used. It does not + * actually render anything or do anything apart from that. + */ + +typedef struct FallbackLogTextRenderer { + IDWriteTextRenderer iface; + IDWriteTextRendererVtbl vtbl; + IDWriteFactory *dw_factory; + LONG ref_count; +} FallbackLogTextRenderer; + +static HRESULT STDMETHODCALLTYPE FallbackLogTextRenderer_IsPixelSnappingDisabled( + IDWriteTextRenderer *This, + _In_opt_ void* clientDrawingContext, + _Out_ BOOL* isDisabled + ) +{ + *isDisabled = true; + return S_OK; +} + +static HRESULT STDMETHODCALLTYPE FallbackLogTextRenderer_GetCurrentTransform( + IDWriteTextRenderer *This, + _In_opt_ void* clientDrawingContext, + _Out_ DWRITE_MATRIX* transform + ) +{ + return E_NOTIMPL; +} + +static HRESULT STDMETHODCALLTYPE FallbackLogTextRenderer_GetPixelsPerDip( + IDWriteTextRenderer *This, + _In_opt_ void* clientDrawingContext, + _Out_ FLOAT* pixelsPerDip + ) +{ + return E_NOTIMPL; +} + +static HRESULT STDMETHODCALLTYPE FallbackLogTextRenderer_DrawGlyphRun( + IDWriteTextRenderer *This, + _In_opt_ void* clientDrawingContext, + FLOAT baselineOriginX, + FLOAT baselineOriginY, + DWRITE_MEASURING_MODE measuringMode, + _In_ DWRITE_GLYPH_RUN const* glyphRun, + _In_ DWRITE_GLYPH_RUN_DESCRIPTION const* glyphRunDescription, + IUnknown* clientDrawingEffect + ) +{ + FallbackLogTextRenderer *this = (FallbackLogTextRenderer *)This; + HRESULT hr; + IDWriteFontCollection *font_coll = NULL; + IDWriteFont **font = (IDWriteFont **)clientDrawingContext; + + hr = IDWriteFactory_GetSystemFontCollection(this->dw_factory, &font_coll, FALSE); + if (FAILED(hr)) + return E_FAIL; + + hr = IDWriteFontCollection_GetFontFromFontFace(font_coll, glyphRun->fontFace, + font); + if (FAILED(hr)) + return E_FAIL; + + return S_OK; +} + +static HRESULT STDMETHODCALLTYPE FallbackLogTextRenderer_DrawUnderline( + IDWriteTextRenderer *This, + _In_opt_ void* clientDrawingContext, + FLOAT baselineOriginX, + FLOAT baselineOriginY, + _In_ DWRITE_UNDERLINE const* underline, + IUnknown* clientDrawingEffect + ) +{ + return S_OK; +} + +static HRESULT STDMETHODCALLTYPE FallbackLogTextRenderer_DrawStrikethrough( + IDWriteTextRenderer *This, + _In_opt_ void* clientDrawingContext, + FLOAT baselineOriginX, + FLOAT baselineOriginY, + _In_ DWRITE_STRIKETHROUGH const* strikethrough, + IUnknown* clientDrawingEffect + ) +{ + return S_OK; +} + +static HRESULT STDMETHODCALLTYPE FallbackLogTextRenderer_DrawInlineObject( + IDWriteTextRenderer *This, + void *clientDrawingContext, + FLOAT originX, + FLOAT originY, + IDWriteInlineObject *inlineObject, + WINBOOL isSideways, + WINBOOL isRightToLeft, + IUnknown *clientDrawingEffect + ) +{ + return S_OK; +} + +// IUnknown methods + +static ULONG STDMETHODCALLTYPE FallbackLogTextRenderer_AddRef( + IDWriteTextRenderer *This + ) +{ + FallbackLogTextRenderer *this = (FallbackLogTextRenderer *)This; + return InterlockedIncrement(&this->ref_count); +} + +static ULONG STDMETHODCALLTYPE FallbackLogTextRenderer_Release( + IDWriteTextRenderer *This + ) +{ + FallbackLogTextRenderer *this = (FallbackLogTextRenderer *)This; + unsigned long new_count = InterlockedDecrement(&this->ref_count); + if (new_count == 0) { + free(this); + return 0; + } + + return new_count; +} + +static HRESULT STDMETHODCALLTYPE FallbackLogTextRenderer_QueryInterface( + IDWriteTextRenderer *This, + REFIID riid, + void **ppvObject + ) +{ + if (IsEqualGUID(riid, &IID_IDWriteTextRenderer) + || IsEqualGUID(riid, &IID_IDWritePixelSnapping) + || IsEqualGUID(riid, &IID_IUnknown)) { + *ppvObject = This; + } else { + *ppvObject = NULL; + return E_FAIL; + } + + This->lpVtbl->AddRef(This); + return S_OK; +} + +static void init_FallbackLogTextRenderer(FallbackLogTextRenderer *r, + IDWriteFactory *factory) +{ + *r = (FallbackLogTextRenderer){ + .iface = { + .lpVtbl = &r->vtbl, + }, + .vtbl = { + FallbackLogTextRenderer_QueryInterface, + FallbackLogTextRenderer_AddRef, + FallbackLogTextRenderer_Release, + FallbackLogTextRenderer_IsPixelSnappingDisabled, + FallbackLogTextRenderer_GetCurrentTransform, + FallbackLogTextRenderer_GetPixelsPerDip, + FallbackLogTextRenderer_DrawGlyphRun, + FallbackLogTextRenderer_DrawUnderline, + FallbackLogTextRenderer_DrawStrikethrough, + FallbackLogTextRenderer_DrawInlineObject, + }, + .dw_factory = factory, + }; +} + +/* + * This function is called whenever a font is used for the first + * time. It will create a FontStream for memory reading, which + * will be stored within the private data. + */ +static bool init_font_private(FontPrivate *priv) +{ + HRESULT hr = S_OK; + IDWriteFont *font = priv->font; + IDWriteFontFace *face = NULL; + IDWriteFontFile *file = NULL; + IDWriteFontFileStream *stream = NULL; + IDWriteFontFileLoader *loader = NULL; + UINT32 n_files = 1; + const void *refKey = NULL; + UINT32 keySize = 0; + + if (priv->stream != NULL) + return true; + + hr = IDWriteFont_CreateFontFace(font, &face); + if (FAILED(hr) || !face) + return false; + + /* DirectWrite only supports one file per face */ + hr = IDWriteFontFace_GetFiles(face, &n_files, &file); + if (FAILED(hr) || !file) { + IDWriteFontFace_Release(face); + return false; + } + + hr = IDWriteFontFile_GetReferenceKey(file, &refKey, &keySize); + if (FAILED(hr)) { + IDWriteFontFile_Release(file); + IDWriteFontFace_Release(face); + return false; + } + + hr = IDWriteFontFile_GetLoader(file, &loader); + if (FAILED(hr) || !loader) { + IDWriteFontFile_Release(file); + IDWriteFontFace_Release(face); + return false; + } + + hr = IDWriteFontFileLoader_CreateStreamFromKey(loader, refKey, keySize, &stream); + if (FAILED(hr) || !stream) { + IDWriteFontFile_Release(file); + IDWriteFontFace_Release(face); + return false; + } + + priv->stream = stream; + IDWriteFontFile_Release(file); + IDWriteFontFace_Release(face); + + return true; +} + +/* + * Read a specified part of a fontfile into memory. + * If the font wasn't used before first creates a + * FontStream and save it into the private data for later usage. + * If the parameter "buf" is NULL libass wants to know the + * size of the Fontfile + */ +static size_t get_data(void *data, unsigned char *buf, size_t offset, + size_t length) +{ + HRESULT hr = S_OK; + FontPrivate *priv = (FontPrivate *) data; + const void *fileBuf = NULL; + void *fragContext = NULL; + + if (!init_font_private(priv)) + return 0; + + if (buf == NULL) { + UINT64 fileSize; + hr = IDWriteFontFileStream_GetFileSize(priv->stream, &fileSize); + if (FAILED(hr)) + return 0; + + return fileSize; + } + + hr = IDWriteFontFileStream_ReadFileFragment(priv->stream, &fileBuf, offset, + length, &fragContext); + + if (FAILED(hr) || !fileBuf) + return 0; + + memcpy(buf, fileBuf, length); + + IDWriteFontFileStream_ReleaseFileFragment(priv->stream, fragContext); + + return length; +} + +/* + * Checks if the passed font has a specific unicode + * character. Returns 0 for failure and 1 for success + */ +static int check_glyph(void *data, uint32_t code) +{ + HRESULT hr = S_OK; + FontPrivate *priv = (FontPrivate *) data; + BOOL exists = FALSE; + + if (code == 0) + return 1; + + IDWriteFont_HasCharacter(priv->font, code, &exists); + if (FAILED(hr)) + return 0; + + return exists; +} + +/* + * This will release the directwrite backend + */ +static void destroy_provider(void *priv) +{ + ProviderPrivate *provider_priv = (ProviderPrivate *)priv; + provider_priv->factory->lpVtbl->Release(provider_priv->factory); + FreeLibrary(provider_priv->directwrite_lib); + free(provider_priv); +} + +/* + * This will destroy a specific font and it's + * Fontstream (in case it does exist) + */ + +static void destroy_font(void *data) +{ + FontPrivate *priv = (FontPrivate *) data; + + IDWriteFont_Release(priv->font); + if (priv->stream != NULL) + IDWriteFontFileStream_Release(priv->stream); + + free(priv); +} + +static int encode_utf16(wchar_t *chars, uint32_t codepoint) +{ + if (codepoint < 0x10000) { + chars[0] = codepoint; + return 1; + } else { + chars[0] = (codepoint >> 10) + 0xD7C0; + chars[1] = (codepoint & 0x3FF) + 0xDC00; + return 2; + } +} + +static char *get_fallback(void *priv, ASS_FontProviderMetaData *meta, + uint32_t codepoint) +{ + HRESULT hr; + ProviderPrivate *provider_priv = (ProviderPrivate *)priv; + IDWriteFactory *dw_factory = provider_priv->factory; + IDWriteTextFormat *text_format = NULL; + IDWriteTextLayout *text_layout = NULL; + FallbackLogTextRenderer renderer; + + init_FallbackLogTextRenderer(&renderer, dw_factory); + + hr = IDWriteFactory_CreateTextFormat(dw_factory, FALLBACK_DEFAULT_FONT, NULL, + DWRITE_FONT_WEIGHT_MEDIUM, DWRITE_FONT_STYLE_NORMAL, + DWRITE_FONT_STRETCH_NORMAL, 1.0f, L"", &text_format); + if (FAILED(hr)) { + return NULL; + } + + // Encode codepoint as UTF-16 + wchar_t char_string[2]; + int char_len = encode_utf16(char_string, codepoint); + + // Create a text_layout, a high-level text rendering facility, using + // the given codepoint and dummy format. + hr = IDWriteFactory_CreateTextLayout(dw_factory, char_string, char_len, text_format, + 0.0f, 0.0f, &text_layout); + if (FAILED(hr)) { + IDWriteTextFormat_Release(text_format); + return NULL; + } + + // Draw the layout with a dummy renderer, which logs the + // font used and stores it. + IDWriteFont *font = NULL; + hr = IDWriteTextLayout_Draw(text_layout, &font, &renderer.iface, 0.0f, 0.0f); + if (FAILED(hr) || font == NULL) { + IDWriteTextLayout_Release(text_layout); + IDWriteTextFormat_Release(text_format); + return NULL; + } + + // We're done with these now + IDWriteTextLayout_Release(text_layout); + IDWriteTextFormat_Release(text_format); + + // Now, just extract the first family name + BOOL exists = FALSE; + IDWriteLocalizedStrings *familyNames = NULL; + hr = IDWriteFont_GetInformationalStrings(font, + DWRITE_INFORMATIONAL_STRING_WIN32_FAMILY_NAMES, + &familyNames, &exists); + if (FAILED(hr) || !exists) { + IDWriteFont_Release(font); + return NULL; + } + + wchar_t temp_name[NAME_MAX_LENGTH]; + hr = IDWriteLocalizedStrings_GetString(familyNames, 0, temp_name, NAME_MAX_LENGTH); + if (FAILED(hr)) { + IDWriteLocalizedStrings_Release(familyNames); + IDWriteFont_Release(font); + return NULL; + } + temp_name[NAME_MAX_LENGTH-1] = 0; + + // DirectWrite may not have found a valid fallback, so check that + // the selected font actually has the requested glyph. + hr = IDWriteFont_HasCharacter(font, codepoint, &exists); + if (FAILED(hr) || !exists) { + IDWriteLocalizedStrings_Release(familyNames); + IDWriteFont_Release(font); + return NULL; + } + + int size_needed = WideCharToMultiByte(CP_UTF8, 0, temp_name, -1, NULL, 0,NULL, NULL); + char *family = (char *) malloc(size_needed); + WideCharToMultiByte(CP_UTF8, 0, temp_name, -1, family, size_needed, NULL, NULL); + + IDWriteLocalizedStrings_Release(familyNames); + IDWriteFont_Release(font); + return family; +} + +static int map_width(enum DWRITE_FONT_STRETCH stretch) +{ + switch (stretch) { + case DWRITE_FONT_STRETCH_ULTRA_CONDENSED: return 50; + case DWRITE_FONT_STRETCH_EXTRA_CONDENSED: return 63; + case DWRITE_FONT_STRETCH_CONDENSED: return FONT_WIDTH_CONDENSED; + case DWRITE_FONT_STRETCH_SEMI_CONDENSED: return 88; + case DWRITE_FONT_STRETCH_MEDIUM: return FONT_WIDTH_NORMAL; + case DWRITE_FONT_STRETCH_SEMI_EXPANDED: return 113; + case DWRITE_FONT_STRETCH_EXPANDED: return FONT_WIDTH_EXPANDED; + case DWRITE_FONT_STRETCH_EXTRA_EXPANDED: return 150; + case DWRITE_FONT_STRETCH_ULTRA_EXPANDED: return 200; + default: + assert(0); + } +} + +/* + * Scan every system font on the current machine and add it + * to the libass lookup. Stores the FontPrivate as private data + * for later memory reading + */ +static void scan_fonts(IDWriteFactory *factory, + ASS_FontProvider *provider) +{ + HRESULT hr = S_OK; + IDWriteFontCollection *fontCollection = NULL; + IDWriteFont *font = NULL; + DWRITE_FONT_METRICS metrics; + DWRITE_FONT_STYLE style; + ASS_FontProviderMetaData meta = {0}; + hr = IDWriteFactory_GetSystemFontCollection(factory, &fontCollection, FALSE); + wchar_t temp_name[NAME_MAX_LENGTH]; + int size_needed = 0; + + if (FAILED(hr) || !fontCollection) + return; + + UINT32 familyCount = IDWriteFontCollection_GetFontFamilyCount(fontCollection); + + for (UINT32 i = 0; i < familyCount; ++i) { + IDWriteFontFamily *fontFamily = NULL; + IDWriteLocalizedStrings *familyNames = NULL; + IDWriteLocalizedStrings *fontNames = NULL; + IDWriteLocalizedStrings *psNames = NULL; + BOOL exists = FALSE; + char *psName = NULL; + + hr = IDWriteFontCollection_GetFontFamily(fontCollection, i, &fontFamily); + if (FAILED(hr)) + continue; + + UINT32 fontCount = IDWriteFontFamily_GetFontCount(fontFamily); + for (UINT32 j = 0; j < fontCount; ++j) { + hr = IDWriteFontFamily_GetFont(fontFamily, j, &font); + if (FAILED(hr)) + continue; + + // Simulations for bold or oblique are sometimes synthesized by + // DirectWrite. We are only interested in physical fonts. + if (IDWriteFont_GetSimulations(font) != 0) { + IDWriteFont_Release(font); + continue; + } + + meta.weight = IDWriteFont_GetWeight(font); + meta.width = map_width(IDWriteFont_GetStretch(font)); + IDWriteFont_GetMetrics(font, &metrics); + style = IDWriteFont_GetStyle(font); + meta.slant = (style == DWRITE_FONT_STYLE_NORMAL) ? FONT_SLANT_NONE : + (style == DWRITE_FONT_STYLE_OBLIQUE)? FONT_SLANT_OBLIQUE : + (style == DWRITE_FONT_STYLE_ITALIC) ? FONT_SLANT_ITALIC : FONT_SLANT_NONE; + + hr = IDWriteFont_GetInformationalStrings(font, + DWRITE_INFORMATIONAL_STRING_POSTSCRIPT_NAME, &psNames,&exists); + if (FAILED(hr)) { + IDWriteFont_Release(font); + continue; + } + + if (exists) { + hr = IDWriteLocalizedStrings_GetString(psNames, 0, temp_name, NAME_MAX_LENGTH); + if (FAILED(hr)) { + IDWriteLocalizedStrings_Release(psNames); + IDWriteFont_Release(font); + continue; + } + + temp_name[NAME_MAX_LENGTH-1] = 0; + size_needed = WideCharToMultiByte(CP_UTF8, 0, temp_name, -1, NULL, 0,NULL, NULL); + psName = (char *) malloc(size_needed); + WideCharToMultiByte(CP_UTF8, 0, temp_name, -1, psName, size_needed, NULL, NULL); + IDWriteLocalizedStrings_Release(psNames); + } + + hr = IDWriteFont_GetInformationalStrings(font, + DWRITE_INFORMATIONAL_STRING_FULL_NAME, &fontNames,&exists); + if (FAILED(hr)) { + IDWriteFont_Release(font); + continue; + } + + if (exists) { + meta.n_fullname = IDWriteLocalizedStrings_GetCount(fontNames); + meta.fullnames = (char **) calloc(meta.n_fullname, sizeof(char *)); + for (UINT32 k = 0; k < meta.n_fullname; ++k) { + hr = IDWriteLocalizedStrings_GetString(fontNames, k, + temp_name, + NAME_MAX_LENGTH); + if (FAILED(hr)) { + continue; + } + + temp_name[NAME_MAX_LENGTH-1] = 0; + size_needed = WideCharToMultiByte(CP_UTF8, 0, temp_name, -1, NULL, 0, NULL, NULL); + char *mbName = (char *) malloc(size_needed); + WideCharToMultiByte(CP_UTF8, 0, temp_name, -1, mbName, size_needed, NULL, NULL); + meta.fullnames[k] = mbName; + } + IDWriteLocalizedStrings_Release(fontNames); + } + + hr = IDWriteFont_GetInformationalStrings(font, + DWRITE_INFORMATIONAL_STRING_WIN32_FAMILY_NAMES, &familyNames, &exists); + if (!exists) + hr = IDWriteFontFamily_GetFamilyNames(fontFamily, &familyNames); + if (FAILED(hr)) { + IDWriteFont_Release(font); + continue; + } + + meta.n_family = IDWriteLocalizedStrings_GetCount(familyNames); + meta.families = (char **) calloc(meta.n_family, sizeof(char *)); + for (UINT32 k = 0; k < meta.n_family; ++k) { + hr = IDWriteLocalizedStrings_GetString(familyNames, k, + temp_name, + NAME_MAX_LENGTH); + if (FAILED(hr)) { + continue; + } + + temp_name[NAME_MAX_LENGTH-1] = 0; + size_needed = WideCharToMultiByte(CP_UTF8, 0, temp_name, -1, NULL, 0,NULL, NULL); + char *mbName = (char *) malloc(size_needed); + WideCharToMultiByte(CP_UTF8, 0, temp_name, -1, mbName, size_needed, NULL, NULL); + meta.families[k] = mbName; + } + IDWriteLocalizedStrings_Release(familyNames); + + FontPrivate *font_priv = (FontPrivate *) calloc(1, sizeof(*font_priv)); + font_priv->font = font; + + ass_font_provider_add_font(provider, &meta, NULL, 0, psName, font_priv); + + for (UINT32 k = 0; k < meta.n_family; ++k) + free(meta.families[k]); + for (UINT32 k = 0; k < meta.n_fullname; ++k) + free(meta.fullnames[k]); + free(meta.fullnames); + free(meta.families); + free(psName); + } + } +} + +/* + * Called by libass when the provider should perform the + * specified task + */ +static ASS_FontProviderFuncs directwrite_callbacks = { + get_data, + check_glyph, + destroy_font, + destroy_provider, + NULL, + NULL, + get_fallback +}; + +typedef HRESULT WINAPI (*DWriteCreateFactoryFn)( + _In_ DWRITE_FACTORY_TYPE factoryType, + _In_ REFIID iid, + _Out_ IUnknown **factory +); + +/* + * Register the directwrite provider. Upon registering + * scans all system fonts. The private data for this + * provider is IDWriteFactory + * On failure returns NULL + */ +ASS_FontProvider *ass_directwrite_add_provider(ASS_Library *lib, + ASS_FontSelector *selector, + const char *config) +{ + HRESULT hr = S_OK; + IDWriteFactory *dwFactory = NULL; + ASS_FontProvider *provider = NULL; + DWriteCreateFactoryFn DWriteCreateFactoryPtr = NULL; + ProviderPrivate *priv = NULL; + + HMODULE directwrite_lib = LoadLibraryW(L"Dwrite.dll"); + if (!directwrite_lib) + goto cleanup; + + DWriteCreateFactoryPtr = (DWriteCreateFactoryFn)GetProcAddress(directwrite_lib, + "DWriteCreateFactory"); + if (!DWriteCreateFactoryPtr) + goto cleanup; + + hr = DWriteCreateFactoryPtr(DWRITE_FACTORY_TYPE_SHARED, + &IID_IDWriteFactory, + (IUnknown **) (&dwFactory)); + if (FAILED(hr) || !dwFactory) { + ass_msg(lib, MSGL_WARN, "Failed to initialize directwrite."); + dwFactory = NULL; + goto cleanup; + } + + priv = (ProviderPrivate *)calloc(sizeof(*priv), 1); + if (!priv) + goto cleanup; + + priv->directwrite_lib = directwrite_lib; + priv->factory = dwFactory; + provider = ass_font_provider_new(selector, &directwrite_callbacks, priv); + if (!provider) + goto cleanup; + + scan_fonts(dwFactory, provider); + return provider; + +cleanup: + + free(priv); + if (dwFactory) + dwFactory->lpVtbl->Release(dwFactory); + if (directwrite_lib) + FreeLibrary(directwrite_lib); + + return NULL; +} diff --git a/libass/ass_directwrite.cpp b/libass/ass_directwrite.cpp deleted file mode 100644 index 062aa31..0000000 --- a/libass/ass_directwrite.cpp +++ /dev/null @@ -1,653 +0,0 @@ -/* - * Copyright (C) 2015 Stephan Vedder - * - * This file is part of libass. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "config.h" - -#include - -extern "C" { -#include "ass_directwrite.h" -#include "ass_utils.h" -} - -#define NAME_MAX_LENGTH 256 -#define FALLBACK_DEFAULT_FONT L"Arial" - -/* - * The private data stored for every font, detected by this backend. - */ -typedef struct { - IDWriteFont *font; - IDWriteFontFileStream *stream; -} FontPrivate; - -typedef struct { - HMODULE directwrite_lib; - IDWriteFactory *factory; -} ProviderPrivate; - -/** - * Custom text renderer class for logging the fonts used. It does not - * actually render anything or do anything apart from that. - */ -class FallbackLogTextRenderer : public IDWriteTextRenderer { -public: - FallbackLogTextRenderer(IDWriteFactory *factory) - : dw_factory(factory), ref_count(0) - {} - - IFACEMETHOD(IsPixelSnappingDisabled)( - _In_opt_ void* clientDrawingContext, - _Out_ BOOL* isDisabled - ) - { - *isDisabled = true; - return S_OK; - } - - IFACEMETHOD(GetCurrentTransform)( - _In_opt_ void* clientDrawingContext, - _Out_ DWRITE_MATRIX* transform - ) - { - return E_NOTIMPL; - } - - IFACEMETHOD(GetPixelsPerDip)( - _In_opt_ void* clientDrawingContext, - _Out_ FLOAT* pixelsPerDip - ) - { - return E_NOTIMPL; - } - - IFACEMETHOD(DrawGlyphRun)( - _In_opt_ void* clientDrawingContext, - FLOAT baselineOriginX, - FLOAT baselineOriginY, - DWRITE_MEASURING_MODE measuringMode, - _In_ DWRITE_GLYPH_RUN const* glyphRun, - _In_ DWRITE_GLYPH_RUN_DESCRIPTION const* glyphRunDescription, - IUnknown* clientDrawingEffect - ) - { - HRESULT hr; - IDWriteFontCollection *font_coll = NULL; - IDWriteFont **font = static_cast(clientDrawingContext); - - hr = dw_factory->GetSystemFontCollection(&font_coll); - if (FAILED(hr)) - return E_FAIL; - - hr = font_coll->GetFontFromFontFace(glyphRun->fontFace, font); - if (FAILED(hr)) - return E_FAIL; - - return S_OK; - } - - IFACEMETHOD(DrawUnderline)( - _In_opt_ void* clientDrawingContext, - FLOAT baselineOriginX, - FLOAT baselineOriginY, - _In_ DWRITE_UNDERLINE const* underline, - IUnknown* clientDrawingEffect - ) - { - return S_OK; - } - - IFACEMETHOD(DrawStrikethrough)( - _In_opt_ void* clientDrawingContext, - FLOAT baselineOriginX, - FLOAT baselineOriginY, - _In_ DWRITE_STRIKETHROUGH const* strikethrough, - IUnknown* clientDrawingEffect - ) - { - return S_OK; - } - - IFACEMETHOD(DrawInlineObject)( - _In_opt_ void* clientDrawingContext, - FLOAT originX, - FLOAT originY, - IDWriteInlineObject* inlineObject, - BOOL isSideways, - BOOL isRightToLeft, - IUnknown* clientDrawingEffect - ) - { - return S_OK; - } - - // IUnknown methods - - IFACEMETHOD_(unsigned long, AddRef)() - { - return InterlockedIncrement(&ref_count); - } - - IFACEMETHOD_(unsigned long, Release)() - { - unsigned long new_count = InterlockedDecrement(&ref_count); - if (new_count == 0) { - free(this); - return 0; - } - - return new_count; - } - - IFACEMETHOD(QueryInterface)( - IID const& riid, - void** ppvObject - ) - { - if (__uuidof(IDWriteTextRenderer) == riid - || __uuidof(IDWritePixelSnapping) == riid - || __uuidof(IUnknown) == riid) { - *ppvObject = this; - } else { - *ppvObject = NULL; - return E_FAIL; - } - - this->AddRef(); - return S_OK; - } - -private: - IDWriteFactory * const dw_factory; - unsigned long ref_count; -}; - -/* - * This function is called whenever a font is used for the first - * time. It will create a FontStream for memory reading, which - * will be stored within the private data. - */ -static bool init_font_private(FontPrivate *priv) -{ - HRESULT hr = S_OK; - IDWriteFont *font = priv->font; - IDWriteFontFace *face = NULL; - IDWriteFontFile *file = NULL; - IDWriteFontFileStream *stream = NULL; - IDWriteFontFileLoader *loader = NULL; - UINT32 n_files = 1; - const void *refKey = NULL; - UINT32 keySize = 0; - - if (priv->stream != NULL) - return true; - - hr = font->CreateFontFace(&face); - if (FAILED(hr) || !face) - return false; - - /* DirectWrite only supports one file per face */ - hr = face->GetFiles(&n_files, &file); - if (FAILED(hr) || !file) { - face->Release(); - return false; - } - - hr = file->GetReferenceKey(&refKey, &keySize); - if (FAILED(hr)) { - file->Release(); - face->Release(); - return false; - } - - hr = file->GetLoader(&loader); - if (FAILED(hr) || !loader) { - file->Release(); - face->Release(); - return false; - } - - hr = loader->CreateStreamFromKey(refKey, keySize, &stream); - if (FAILED(hr) || !stream) { - file->Release(); - face->Release(); - return false; - } - - priv->stream = stream; - file->Release(); - face->Release(); - - return true; -} - -/* - * Read a specified part of a fontfile into memory. - * If the font wasn't used before first creates a - * FontStream and save it into the private data for later usage. - * If the parameter "buf" is NULL libass wants to know the - * size of the Fontfile - */ -static size_t get_data(void *data, unsigned char *buf, size_t offset, - size_t length) -{ - HRESULT hr = S_OK; - FontPrivate *priv = (FontPrivate *) data; - const void *fileBuf = NULL; - void *fragContext = NULL; - - if (!init_font_private(priv)) - return 0; - - if (buf == NULL) { - UINT64 fileSize; - hr = priv->stream->GetFileSize(&fileSize); - if (FAILED(hr)) - return 0; - - return fileSize; - } - - hr = priv->stream->ReadFileFragment(&fileBuf, offset, length, &fragContext); - - if (FAILED(hr) || !fileBuf) - return 0; - - memcpy(buf, fileBuf, length); - - priv->stream->ReleaseFileFragment(fragContext); - - return length; -} - -/* - * Checks if the passed font has a specific unicode - * character. Returns 0 for failure and 1 for success - */ -static int check_glyph(void *data, uint32_t code) -{ - HRESULT hr = S_OK; - FontPrivate *priv = (FontPrivate *) data; - BOOL exists = FALSE; - - if (code == 0) - return 1; - - priv->font->HasCharacter(code, &exists); - if (FAILED(hr)) - return 0; - - return exists; -} - -/* - * This will release the directwrite backend - */ -static void destroy_provider(void *priv) -{ - ProviderPrivate *provider_priv = (ProviderPrivate *)priv; - provider_priv->factory->Release(); - FreeLibrary(provider_priv->directwrite_lib); - free(provider_priv); -} - -/* - * This will destroy a specific font and it's - * Fontstream (in case it does exist) - */ - -static void destroy_font(void *data) -{ - FontPrivate *priv = (FontPrivate *) data; - - priv->font->Release(); - if (priv->stream != NULL) - priv->stream->Release(); - - free(priv); -} - -static int encode_utf16(wchar_t *chars, uint32_t codepoint) -{ - if (codepoint < 0x10000) { - chars[0] = codepoint; - return 1; - } else { - chars[0] = (codepoint >> 10) + 0xD7C0; - chars[1] = (codepoint & 0x3FF) + 0xDC00; - return 2; - } -} - -static char *get_fallback(void *priv, ASS_FontProviderMetaData *meta, - uint32_t codepoint) -{ - HRESULT hr; - ProviderPrivate *provider_priv = (ProviderPrivate *)priv; - IDWriteFactory *dw_factory = provider_priv->factory; - IDWriteTextFormat *text_format = NULL; - IDWriteTextLayout *text_layout = NULL; - FallbackLogTextRenderer renderer(dw_factory); - - hr = dw_factory->CreateTextFormat(FALLBACK_DEFAULT_FONT, NULL, - DWRITE_FONT_WEIGHT_MEDIUM, DWRITE_FONT_STYLE_NORMAL, - DWRITE_FONT_STRETCH_NORMAL, 1.0f, L"", &text_format); - if (FAILED(hr)) { - return NULL; - } - - // Encode codepoint as UTF-16 - wchar_t char_string[2]; - int char_len = encode_utf16(char_string, codepoint); - - // Create a text_layout, a high-level text rendering facility, using - // the given codepoint and dummy format. - hr = dw_factory->CreateTextLayout(char_string, char_len, text_format, - 0.0f, 0.0f, &text_layout); - if (FAILED(hr)) { - text_format->Release(); - return NULL; - } - - // Draw the layout with a dummy renderer, which logs the - // font used and stores it. - IDWriteFont *font = NULL; - hr = text_layout->Draw(&font, &renderer, 0.0f, 0.0f); - if (FAILED(hr) || font == NULL) { - text_layout->Release(); - text_format->Release(); - return NULL; - } - - // We're done with these now - text_layout->Release(); - text_format->Release(); - - // Now, just extract the first family name - BOOL exists = FALSE; - IDWriteLocalizedStrings *familyNames = NULL; - hr = font->GetInformationalStrings( - DWRITE_INFORMATIONAL_STRING_WIN32_FAMILY_NAMES, - &familyNames, &exists); - if (FAILED(hr) || !exists) { - font->Release(); - return NULL; - } - - wchar_t temp_name[NAME_MAX_LENGTH]; - hr = familyNames->GetString(0, temp_name, NAME_MAX_LENGTH); - if (FAILED(hr)) { - familyNames->Release(); - font->Release(); - return NULL; - } - temp_name[NAME_MAX_LENGTH-1] = 0; - - // DirectWrite may not have found a valid fallback, so check that - // the selected font actually has the requested glyph. - hr = font->HasCharacter(codepoint, &exists); - if (FAILED(hr) || !exists) { - familyNames->Release(); - font->Release(); - return NULL; - } - - int size_needed = WideCharToMultiByte(CP_UTF8, 0, temp_name, -1, NULL, 0,NULL, NULL); - char *family = (char *) malloc(size_needed); - WideCharToMultiByte(CP_UTF8, 0, temp_name, -1, family, size_needed, NULL, NULL); - - familyNames->Release(); - font->Release(); - return family; -} - -static int map_width(enum DWRITE_FONT_STRETCH stretch) -{ - switch (stretch) { - case DWRITE_FONT_STRETCH_ULTRA_CONDENSED: return 50; - case DWRITE_FONT_STRETCH_EXTRA_CONDENSED: return 63; - case DWRITE_FONT_STRETCH_CONDENSED: return FONT_WIDTH_CONDENSED; - case DWRITE_FONT_STRETCH_SEMI_CONDENSED: return 88; - case DWRITE_FONT_STRETCH_MEDIUM: return FONT_WIDTH_NORMAL; - case DWRITE_FONT_STRETCH_SEMI_EXPANDED: return 113; - case DWRITE_FONT_STRETCH_EXPANDED: return FONT_WIDTH_EXPANDED; - case DWRITE_FONT_STRETCH_EXTRA_EXPANDED: return 150; - case DWRITE_FONT_STRETCH_ULTRA_EXPANDED: return 200; - default: - assert(0); - } -} - -/* - * Scan every system font on the current machine and add it - * to the libass lookup. Stores the FontPrivate as private data - * for later memory reading - */ -static void scan_fonts(IDWriteFactory *factory, - ASS_FontProvider *provider) -{ - HRESULT hr = S_OK; - IDWriteFontCollection *fontCollection = NULL; - IDWriteFont *font = NULL; - DWRITE_FONT_METRICS metrics; - DWRITE_FONT_STYLE style; - ASS_FontProviderMetaData meta = ASS_FontProviderMetaData(); - hr = factory->GetSystemFontCollection(&fontCollection, FALSE); - wchar_t temp_name[NAME_MAX_LENGTH]; - int size_n