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. --- libass/Makefile.am | 2 +- libass/ass_directwrite.c | 706 +++++++++++++++++++++++++++++++++++++++++++++ libass/ass_directwrite.cpp | 653 ----------------------------------------- libass/dwrite.h | 668 ++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 1375 insertions(+), 654 deletions(-) create mode 100644 libass/ass_directwrite.c delete mode 100644 libass/ass_directwrite.cpp create mode 100644 libass/dwrite.h (limited to 'libass') 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_needed = 0; - - if (FAILED(hr) || !fontCollection) - return; - - UINT32 familyCount = fontCollection->GetFontFamilyCount(); - - 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 = fontCollection->GetFontFamily(i, &fontFamily); - if (FAILED(hr)) - continue; - - UINT32 fontCount = fontFamily->GetFontCount(); - for (UINT32 j = 0; j < fontCount; ++j) { - hr = fontFamily->GetFont(j, &font); - if (FAILED(hr)) - continue; - - // Simulations for bold or oblique are sometimes synthesized by - // DirectWrite. We are only interested in physical fonts. - if (font->GetSimulations() != 0) { - font->Release(); - continue; - } - - meta.weight = font->GetWeight(); - meta.width = map_width(font->GetStretch()); - font->GetMetrics(&metrics); - style = font->GetStyle(); - 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 = font->GetInformationalStrings(DWRITE_INFORMATIONAL_STRING_POSTSCRIPT_NAME, &psNames,&exists); - if (FAILED(hr)) { - font->Release(); - continue; - } - - if (exists) { - hr = psNames->GetString(0, temp_name, NAME_MAX_LENGTH); - if (FAILED(hr)) { - psNames->Release(); - font->Release(); - 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); - psNames->Release(); - } - - hr = font->GetInformationalStrings(DWRITE_INFORMATIONAL_STRING_FULL_NAME, &fontNames,&exists); - if (FAILED(hr)) { - font->Release(); - continue; - } - - if (exists) { - meta.n_fullname = fontNames->GetCount(); - meta.fullnames = (char **) calloc(meta.n_fullname, sizeof(char *)); - for (UINT32 k = 0; k < meta.n_fullname; ++k) { - hr = fontNames->GetString(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; - } - fontNames->Release(); - } - - hr = font->GetInformationalStrings(DWRITE_INFORMATIONAL_STRING_WIN32_FAMILY_NAMES, &familyNames, &exists); - if (!exists) - hr = fontFamily->GetFamilyNames(&familyNames); - if (FAILED(hr)) { - font->Release(); - continue; - } - - meta.n_family = familyNames->GetCount(); - meta.families = (char **) calloc(meta.n_family, sizeof(char *)); - for (UINT32 k = 0; k < meta.n_family; ++k) { - hr = familyNames->GetString(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; - } - familyNames->Release(); - - 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, - __uuidof(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->Release(); - if (directwrite_lib) - FreeLibrary(directwrite_lib); - - return NULL; -} diff --git a/libass/dwrite.h b/libass/dwrite.h new file mode 100644 index 0000000..c7bda0b --- /dev/null +++ b/libass/dwrite.h @@ -0,0 +1,668 @@ +/** + * This file has no copyright assigned and is placed in the Public Domain. + * This file is part of the mingw-w64 runtime package. + * No warranty is given; refer to the file DISCLAIMER.PD within this package. + */ +/** + * Stripped version. Only definitions needed by libass. + */ +#ifndef __INC_DWRITE__ +#define __INC_DWRITE__ + +#define DWRITEAPI DECLSPEC_IMPORT + +#include + +typedef struct IDWriteFactory IDWriteFactory; +typedef struct IDWriteFont IDWriteFont; +typedef struct IDWriteFontCollection IDWriteFontCollection; +typedef struct IDWriteFontFace IDWriteFontFace; +typedef struct IDWriteFontFamily IDWriteFontFamily; +typedef struct IDWriteFontList IDWriteFontList; +typedef struct IDWriteFontFile IDWriteFontFile; +typedef struct IDWriteFontFileLoader IDWriteFontFileLoader; +typedef struct IDWriteFontFileStream IDWriteFontFileStream; +typedef struct IDWriteInlineObject IDWriteInlineObject; +typedef struct IDWriteLocalizedStrings IDWriteLocalizedStrings; +typedef struct IDWritePixelSnapping IDWritePixelSnapping; +typedef struct IDWriteTextFormat IDWriteTextFormat; +typedef struct IDWriteTextLayout IDWriteTextLayout; +typedef struct IDWriteTextRenderer IDWriteTextRenderer; + +#include + +typedef enum DWRITE_INFORMATIONAL_STRING_ID { + DWRITE_INFORMATIONAL_STRING_NONE = 0, + DWRITE_INFORMATIONAL_STRING_COPYRIGHT_NOTICE, + DWRITE_INFORMATIONAL_STRING_VERSION_STRINGS, + DWRITE_INFORMATIONAL_STRING_TRADEMARK, + DWRITE_INFORMATIONAL_STRING_MANUFACTURER, + DWRITE_INFORMATIONAL_STRING_DESIGNER, + DWRITE_INFORMATIONAL_STRING_DESIGNER_URL, + DWRITE_INFORMATIONAL_STRING_DESCRIPTION, + DWRITE_INFORMATIONAL_STRING_FONT_VENDOR_URL, + DWRITE_INFORMATIONAL_STRING_LICENSE_DESCRIPTION, + DWRITE_INFORMATIONAL_STRING_LICENSE_INFO_URL, + DWRITE_INFORMATIONAL_STRING_WIN32_FAMILY_NAMES, + DWRITE_INFORMATIONAL_STRING_WIN32_SUBFAMILY_NAMES, + DWRITE_INFORMATIONAL_STRING_PREFERRED_FAMILY_NAMES, + DWRITE_INFORMATIONAL_STRING_PREFERRED_SUBFAMILY_NAMES, + DWRITE_INFORMATIONAL_STRING_SAMPLE_TEXT, + DWRITE_INFORMATIONAL_STRING_FULL_NAME, + DWRITE_INFORMATIONAL_STRING_POSTSCRIPT_NAME, + DWRITE_INFORMATIONAL_STRING_POSTSCRIPT_CID_NAME +} DWRITE_INFORMATIONAL_STRING_ID; + +typedef enum DWRITE_FACTORY_TYPE { + DWRITE_FACTORY_TYPE_SHARED = 0, + DWRITE_FACTORY_TYPE_ISOLATED +} DWRITE_FACTORY_TYPE; + + +typedef enum DWRITE_FONT_SIMULATIONS { + DWRITE_FONT_SIMULATIONS_NONE = 0x0000, + DWRITE_FONT_SIMULATIONS_BOLD = 0x0001, + DWRITE_FONT_SIMULATIONS_OBLIQUE = 0x0002 +} DWRITE_FONT_SIMULATIONS; + +typedef enum DWRITE_FONT_STRETCH { + DWRITE_FONT_STRETCH_UNDEFINED = 0, + DWRITE_FONT_STRETCH_ULTRA_CONDENSED = 1, + DWRITE_FONT_STRETCH_EXTRA_CONDENSED = 2, + DWRITE_FONT_STRETCH_CONDENSED = 3, + DWRITE_FONT_STRETCH_SEMI_CONDENSED = 4, + DWRITE_FONT_STRETCH_NORMAL = 5, + DWRITE_FONT_STRETCH_MEDIUM = 5, + DWRITE_FONT_STRETCH_SEMI_EXPANDED = 6, + DWRITE_FONT_STRETCH_EXPANDED = 7, + DWRITE_FONT_STRETCH_EXTRA_EXPANDED = 8, + DWRITE_FONT_STRETCH_ULTRA_EXPANDED = 9 +} DWRITE_FONT_STRETCH; + +typedef enum DWRITE_FONT_STYLE { + DWRITE_FONT_STYLE_NORMAL = 0, + DWRITE_FONT_STYLE_OBLIQUE, + DWRITE_FONT_STYLE_ITALIC +} DWRITE_FONT_STYLE; + +typedef enum DWRITE_FONT_WEIGHT { + DWRITE_FONT_WEIGHT_MEDIUM = 500, + /* rest dropped */ +} DWRITE_FONT_WEIGHT; + +typedef struct DWRITE_FONT_METRICS { + UINT16 designUnitsPerEm; + UINT16 ascent; + UINT16 descent; + INT16 lineGap; + UINT16 capHeight; + UINT16 xHeight; + INT16 underlinePosition; + UINT16 underlineThickness; + INT16 strikethroughPosition; + UINT16 strikethroughThickness; +} DWRITE_FONT_METRICS; + +typedef struct DWRITE_GLYPH_OFFSET DWRITE_GLYPH_OFFSET; + +typedef struct DWRITE_GLYPH_RUN { + IDWriteFontFace *fontFace; + FLOAT fontEmSize; + UINT32 glyphCount; + const UINT16 *glyphIndices; + const FLOAT *glyphAdvances; + const DWRITE_GLYPH_OFFSET *glyphOffsets; + WINBOOL isSideways; + UINT32 bidiLevel; +} DWRITE_GLYPH_RUN; + +typedef struct DWRITE_GLYPH_RUN_DESCRIPTION DWRITE_GLYPH_RUN_DESCRIPTION; +typedef struct DWRITE_HIT_TEST_METRICS DWRITE_HIT_TEST_METRICS; +typedef struct DWRITE_LINE_METRICS DWRITE_LINE_METRICS; +typedef struct DWRITE_MATRIX DWRITE_MATRIX; +typedef struct DWRITE_STRIKETHROUGH DWRITE_STRIKETHROUGH; +typedef struct DWRITE_TEXT_METRICS DWRITE_TEXT_METRICS; + +typedef struct DWRITE_TEXT_RANGE { + UINT32 startPosition; + UINT32 length; +} DWRITE_TEXT_RANGE; + +typedef struct DWRITE_TRIMMING DWRITE_TRIMMING; +typedef struct DWRITE_UNDERLINE DWRITE_UNDERLINE; + +#ifndef __MINGW_DEF_ARG_VAL +#ifdef __cplusplus +#define __MINGW_DEF_ARG_VAL(x) = x +#else +#define __MINGW_DEF_ARG_VAL(x) +#endif +#endif + +#undef INTERFACE +#define INTERFACE IDWriteFactory +DECLARE_INTERFACE_(IDWriteFactory,IUnknown) +{ + BEGIN_INTERFACE + +#ifndef __cplusplus + /* IUnknown methods */ + STDMETHOD(QueryInterface)(THIS_ REFIID riid, void **ppvObject) PURE; + STDMETHOD_(ULONG, AddRef)(THIS) PURE; + STDMETHOD_(ULONG, Release)(THIS) PURE; +#endif + + /* IDWriteFactory methods */ + STDMETHOD(GetSystemFontCollection)(THIS_ + IDWriteFontCollection **fontCollection, + WINBOOL checkForUpdates __MINGW_DEF_ARG_VAL(FALSE)) PURE; + + STDMETHOD(dummy1)(THIS); + STDMETHOD(dummy2)(THIS); + STDMETHOD(dummy3)(THIS); + STDMETHOD(dummy4)(THIS); + STDMETHOD(dummy5)(THIS); + STDMETHOD(dummy6)(THIS); + STDMETHOD(dummy7)(THIS); + STDMETHOD(dummy8)(THIS); + STDMETHOD(dummy9)(THIS); + STDMETHOD(dummy10)(THIS); + STDMETHOD(dummy11)(THIS); + + STDMETHOD(CreateTextFormat)(THIS_ + WCHAR const *fontFamilyName, + IDWriteFontCollection *fontCollection, + DWRITE_FONT_WEIGHT fontWeight, + DWRITE_FONT_STYLE fontStyle, + DWRITE_FONT_STRETCH fontStretch, + FLOAT fontSize, + WCHAR const *localeName, + IDWriteTextFormat **textFormat) PURE; + + STDMETHOD(dummy12)(THIS); + STDMETHOD(dummy13)(THIS); + + STDMETHOD(CreateTextLayout)(THIS_ + WCHAR const *string, + UINT32 stringLength, + IDWriteTextFormat *textFormat, + FLOAT maxWidth, + FLOAT maxHeight, + IDWriteTextLayout **textLayout) PURE; + + /* remainder dropped */ + END_INTERFACE +}; +#ifdef COBJMACROS +#define IDWriteFactory_QueryInterface(This,riid,ppvObject) (This)->lpVtbl->QueryInterface(This,riid,ppvObject) +#define IDWriteFactory_AddRef(This) (This)->lpVtbl->AddRef(This) +#define IDWriteFactory_Release(This) (This)->lpVtbl->Release(This) +#define IDWriteFactory_GetSystemFontCollection(This,fontCollection,checkForUpdates) (This)->lpVtbl->GetSystemFontCollection(This,fontCollection,checkForUpdates) +#define IDWriteFactory_CreateTextFormat(This,fontFamilyName,fontCollection,fontWeight,fontStyle,fontStretch,fontSize,localeName,textFormat) (This)->lpVtbl->CreateTextFormat(This,fontFamilyName,fontCollection,fontWeight,fontStyle,fontStretch,fontSize,localeName,textFormat) +#define IDWriteFactory_CreateTextLayout(This,string,stringLength,textFormat,maxWidth,maxHeight,textLayout) (This)->lpVtbl->CreateTextLayout(This,string,stringLength,textFormat,maxWidth,maxHeight,textLayout) +#endif /*COBJMACROS*/ + +#undef INTERFACE +#define INTERFACE IDWriteFont +DECLARE_INTERFACE_(IDWriteFont,IUnknown) +{ + BEGIN_INTERFACE + +#ifndef __cplusplus + /* IUnknown methods */ + STDMETHOD(QueryInterface)(THIS_ REFIID riid, void **ppvObject) PURE; + STDMETHOD_(ULONG, AddRef)(THIS) PURE; + STDMETHOD_(ULONG, Release)(THIS) PURE; +#endif + + /* IDWriteFont methods */ + STDMETHOD(GetFontFamily)(THIS_ + IDWriteFontFamily **fontFamily) PURE; + + STDMETHOD_(DWRITE_FONT_WEIGHT, GetWeight)(THIS) PURE; + STDMETHOD_(DWRITE_FONT_STRETCH, GetStretch)(THIS) PURE; + STDMETHOD_(DWRITE_FONT_STYLE, GetStyle)(THIS) PURE; + STDMETHOD_(WINBOOL, IsSymbolFont)(THIS) PURE; + + STDMETHOD(GetFaceNames)(THIS_ + IDWriteLocalizedStrings **names) PURE; + + STDMETHOD(GetInformationalStrings)(THIS_ + DWRITE_INFORMATIONAL_STRING_ID informationalStringID, + IDWriteLocalizedStrings **informationalStrings, + WINBOOL *exists) PURE; + + STDMETHOD_(DWRITE_FONT_SIMULATIONS, GetSimulations)(THIS) PURE; + + STDMETHOD_(void, GetMetrics)(THIS_ + DWRITE_FONT_METRICS *fontMetrics) PURE; + + STDMETHOD(HasCharacter)(THIS_ + UINT32 unicodeValue, + WINBOOL *exists) PURE; + + STDMETHOD(CreateFontFace)(THIS_ + IDWriteFontFace **fontFace) PURE; + + END_INTERFACE +}; +#ifdef COBJMACROS +#define IDWriteFont_QueryInterface(This,riid,ppvObject) (This)->lpVtbl->QueryInterface(This,riid,ppvObject) +#define IDWriteFont_AddRef(This) (This)->lpVtbl->AddRef(This) +#define IDWriteFont_Release(This) (This)->lpVtbl->Release(This) +#define IDWriteFont_CreateFontFace(This,fontFace) (This)->lpVtbl->CreateFontFace(This,fontFace) +#define IDWriteFont_GetFaceNames(This,names) (This)->lpVtbl->GetFaceNames(This,names) +#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) (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) (This)->lpVtbl->IsSymbolFont(This) +#endif /*COBJMACROS*/ + +#undef INTERFACE +#define INTERFACE IDWriteFontCollection +DECLARE_INTERFACE_(IDWriteFontCollection,IUnknown) +{ + BEGIN_INTERFACE + +#ifndef __cplusplus + /* IUnknown methods */ + STDMETHOD(QueryInterface)(THIS_ REFIID riid, void **ppvObject) PURE; + STDMETHOD_(ULONG, AddRef)(THIS) PURE; + STDMETHOD_(ULONG, Release)(THIS) PURE; +#endif + + /* IDWriteFontCollection methods */ + STDMETHOD_(UINT32, GetFontFamilyCount)(THIS) PURE; + + STDMETHOD(GetFontFamily)(THIS_ + UINT32 index, + IDWriteFontFamily **fontFamily) PURE; + + STDMETHOD(FindFamilyName)(THIS_ + WCHAR const *familyName, + UINT32 *index, + WINBOOL *exists) PURE; + + STDMETHOD(GetFontFromFontFace)(THIS_ + IDWriteFontFace* fontFace, + IDWriteFont **font) PURE; + + END_INTERFACE +}; +#ifdef COBJMACROS +#define IDWriteFontCollection_QueryInterface(This,riid,ppvObject) (This)->lpVtbl->QueryInterface(This,riid,ppvObject) +#define IDWriteFontCollection_AddRef(This) (This)->lpVtbl->AddRef(This) +#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) (This)->lpVtbl->GetFontFamilyCount(This) +#define IDWriteFontCollection_GetFontFromFontFace(This,fontFace,font) (This)->lpVtbl->GetFontFromFontFace(This,fontFace,font) +#endif /*COBJMACROS*/ + +#undef INTERFACE +#define INTERFACE IDWriteFontFace +DECLARE_INTERFACE_(IDWriteFontFace,IUnknown) +{ + BEGIN_INTERFACE + +#ifndef __cplusplus + /* IUnknown methods */ + STDMETHOD(QueryInterface)(THIS_ REFIID riid, void **ppvObject) PURE; + STDMETHOD_(ULONG, AddRef)(THIS) PURE; + STDMETHOD_(ULONG, Release)(THIS) PURE; +#endif + + /* IDWriteFontFace methods */ + STDMETHOD(dummy1)(THIS); + + STDMETHOD(GetFiles)(THIS_ + UINT32 *numberOfFiles, + IDWriteFontFile **fontFiles) PURE; + + /* rest dropped */ + END_INTERFACE +}; +#ifdef COBJMACROS +#define IDWriteFontFace_Release(This) (This)->lpVtbl->Release(This) +#define IDWriteFontFace_GetFiles(This,fontFiles,b) (This)->lpVtbl->GetFiles(This,fontFiles,b) +#endif /*COBJMACROS*/ + +#undef INTERFACE +#define INTERFACE IDWriteFontFamily +DECLARE_INTERFACE_(IDWriteFontFamily,IDWriteFontList) +{ + BEGIN_INTERFACE + +#ifndef __cplusplus + /* IUnknown methods */ + STDMETHOD(QueryInterface)(THIS_ REFIID riid, void **ppvObject) PURE; + STDMETHOD_(ULONG, AddRef)(THIS) PURE; + STDMETHOD_(ULONG, Release)(THIS) PURE; + + /* IDWriteFontList methods */ + STDMETHOD(GetFontCollection)(THIS_ + IDWriteFontCollection** fontCollection) PURE; + + STDMETHOD_(UINT32, GetFontCount)(THIS) PURE; + + STDMETHOD(GetFont)(THIS_ + UINT32 index, + IDWriteFont **font) PURE; +#endif + + /* IDWriteFontFamily methods */ + STDMETHOD(GetFamilyNames)(THIS_ + IDWriteLocalizedStrings **names) PURE; + + /* rest dropped */ + END_INTERFACE +}; +#ifdef COBJMACROS +#define IDWriteFontFamily_QueryInterface(This,riid,ppvObject) (This)->lpVtbl->QueryInterface(This,riid,ppvObject) +#define IDWriteFontFamily_AddRef(This) (This)->lpVtbl->AddRef(This) +#define IDWriteFontFamily_Release(This) (This)->lpVtbl->Release(This) +#define IDWriteFontFamily_GetFont(This,index,font) (This)->lpVtbl->GetFont(This,index,font) +#define IDWriteFontFamily_GetFontCount(This) (This)->lpVtbl->GetFontCount(This) +#define IDWriteFontFamily_GetFamilyNames(This,names) (This)->lpVtbl->GetFamilyNames(This,names) +#endif /*COBJMACROS*/ + +#undef INTERFACE +#define INTERFACE IDWriteFontFile +DECLARE_INTERFACE_(IDWriteFontFile,IUnknown) +{ + BEGIN_INTERFACE + +#ifndef __cplusplus + /* IUnknown methods */ + STDMETHOD(QueryInterface)(THIS_ REFIID riid, void **ppvObject) PURE; + STDMETHOD_(ULONG, AddRef)(THIS) PURE; + STDMETHOD_(ULONG, Release)(THIS) PURE; +#endif + + /* IDWriteFontFile methods */ + STDMETHOD(GetReferenceKey)(THIS_ + void const **fontFileReferenceKey, + UINT32 *fontFileReferenceKeySize) PURE; + + STDMETHOD(GetLoader)(THIS_ + IDWriteFontFileLoader **fontFileLoader) PURE; + + /* rest dropped */ + END_INTERFACE +}; +#ifdef COBJMACROS +#define IDWriteFontFile_Release(This) (This)->lpVtbl->Release(This) +#define IDWriteFontFile_GetLoader(This,fontFileLoader) (This)->lpVtbl->GetLoader(This,fontFileLoader) +#define IDWriteFontFile_GetReferenceKey(This,fontFileReferenceKey,fontFileReferenceKeySize) (This)->lpVtbl->GetReferenceKey(This,fontFileReferenceKey,fontFileReferenceKeySize) +#endif /*COBJMACROS*/ + +#undef INTERFACE +#define INTERFACE IDWriteFontFileLoader +DECLARE_INTERFACE_(IDWriteFontFileLoader,IUnknown) +{ + BEGIN_INTERFACE + +#ifndef __cplusplus + /* IUnknown methods */ + STDMETHOD(QueryInterface)(THIS_ REFIID riid, void **ppvObject) PURE; + STDMETHOD_(ULONG, AddRef)(THIS) PURE; + STDMETHOD_(ULONG, Release)(THIS) PURE; +#endif + + /* IDWriteFontFileLoader methods */ + STDMETHOD(CreateStreamFromKey)(THIS_ + void const *fontFileReferenceKey, + UINT32 fontFileReferenceKeySize, + IDWriteFontFileStream **fontFileStream) PURE; + + END_INTERFACE +}; +#ifdef COBJMACROS +#define IDWriteFontFileLoader_QueryInterface(This,riid,ppvObject) (This)->lpVtbl->QueryInterface(This,riid,ppvObject) +#define IDWriteFontFileLoader_AddRef(This) (This)->lpVtbl->AddRef(This) +#define IDWriteFontFileLoader_Release(This) (This)->lpVtbl->Release(This) +#define IDWriteFontFileLoader_CreateStreamFromKey(This,fontFileReferenceKey,fontFileReferenceKeySize,fontFileStream) (This)->lpVtbl->CreateStreamFromKey(This,fontFileReferenceKey,fontFileReferenceKeySize,fontFileStream) +#endif /*COBJMACROS*/ + +#undef INTERFACE +#define INTERFACE IDWriteFontFileStream +DECLARE_INTERFACE_(IDWriteFontFileStream,IUnknown) +{ + BEGIN_INTERFACE + +#ifndef __cplusplus + /* IUnknown methods */ + STDMETHOD(QueryInterface)(THIS_ REFIID riid, void **ppvObject) PURE; + STDMETHOD_(ULONG, AddRef)(THIS) PURE; + STDMETHOD_(ULONG, Release)(THIS) PURE; +#endif + + /* IDWriteFontFileStream methods */ + STDMETHOD(ReadFileFragment)(THIS_ + void const **fragmentStart, + UINT64 fileOffset, + UINT64 fragmentSize, + void** fragmentContext) PURE; + + STDMETHOD_(void, ReleaseFileFragment)(THIS_ + void *fragmentContext) PURE; + + STDMETHOD(GetFileSize)(THIS_ + UINT64 *fileSize) PURE; + + STDMETHOD(GetLastWriteTime)(THIS_ + UINT64 *lastWriteTime) PURE; + + END_INTERFACE +}; +#ifdef COBJMACROS +#define IDWriteFontFileStream_QueryInterface(This,riid,ppvObject) (This)->lpVtbl->QueryInterface(This,riid,ppvObject) +#define IDWriteFontFileStream_AddRef(This) (This)->lpVtbl->AddRef(This) +#define IDWriteFontFileStream_Release(This) (This)->lpVtbl->Release(This) +#define IDWriteFontFileStream_GetFileSize(This,fileSize) (This)->lpVtbl->GetFileSize(This,fileSize) +#define IDWriteFontFileStream_ReadFileFragment(This,fragmentStart,fileOffset,fragmentSize,fragmentContext) (This)->lpVtbl->ReadFileFragment(This,fragmentStart,fileOffset,fragmentSize,fragmentContext) +#define IDWriteFontFileStream_ReleaseFileFragment(This,fragmentContext) (This)->lpVtbl->ReleaseFileFragment(This,fragmentContext) +#endif /*COBJMACROS*/ + +#undef INTERFACE +#define INTERFACE IDWriteLocalizedStrings +DECLARE_INTERFACE_(IDWriteLocalizedStrings,IUnknown) +{ + BEGIN_INTERFACE + +#ifndef __cplusplus + /* IUnknown methods */ + STDMETHOD(QueryInterface)(THIS_ REFIID riid, void **ppvObject) PURE; + STDMETHOD_(ULONG, AddRef)(THIS) PURE; + STDMETHOD_(ULONG, Release)(THIS) PURE; +#endif + + /* IDWriteLocalizedStrings methods */ + STDMETHOD_(UINT32, GetCount)(THIS) PURE; + + STDMETHOD(dummy1)(THIS); + STDMETHOD(dummy2)(THIS); + STDMETHOD(dummy3)(THIS); + STDMETHOD(dummy4)(THIS); + + STDMETHOD(GetString)(THIS_ + UINT32 index, + WCHAR *stringBuffer, + UINT32 size) PURE; + + END_INTERFACE +}; +#ifdef COBJMACROS +#define IDWriteLocalizedStrings_Release(This) (This)->lpVtbl->Release(This) +#define IDWriteLocalizedStrings_GetCount(This) (This)->lpVtbl->GetCount(This) +#define IDWriteLocalizedStrings_GetString(This,index,stringBuffer,size) (This)->lpVtbl->GetString(This,index,stringBuffer,size) +#endif /*COBJMACROS*/ + +#undef INTERFACE +#define INTERFACE IDWriteTextFormat +DECLARE_INTERFACE_(IDWriteTextFormat,IUnknown) +{ + BEGIN_INTERFACE + +#ifndef __cplusplus + /* IUnknown methods */ + STDMETHOD(QueryInterface)(THIS_ REFIID riid, void **ppvObject) PURE; + STDMETHOD_(ULONG, AddRef)(THIS) PURE; + STDMETHOD_(ULONG, Release)(THIS) PURE; +#endif + + /* IDWriteTextFormat methods */ + /* rest dropped */ + END_INTERFACE +}; +#ifdef COBJMACROS +#define IDWriteTextFormat_Release(This) (This)->lpVtbl->Release(This) +#endif /*COBJMACROS*/ + +#undef INTERFACE +#define INTERFACE IDWriteTextLayout +DECLARE_INTERFACE_(IDWriteTextLayout,IDWriteTextFormat) +{ + BEGIN_INTERFACE + +#ifndef __cplusplus + /* IUnknown methods */ + STDMETHOD(QueryInterface)(THIS_ REFIID riid, void **ppvObject) PURE; + STDMETHOD_(ULONG, AddRef)(THIS) PURE; + STDME