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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
commit43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree620249daf56c0258faa40cbdcf9cfba06de2a846 /gfx/2d/NativeFontResourceDWrite.cpp
parentInitial commit. (diff)
downloadfirefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz
firefox-43a97878ce14b72f0981164f87f2e35e14151312.zip
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/2d/NativeFontResourceDWrite.cpp')
-rw-r--r--gfx/2d/NativeFontResourceDWrite.cpp269
1 files changed, 269 insertions, 0 deletions
diff --git a/gfx/2d/NativeFontResourceDWrite.cpp b/gfx/2d/NativeFontResourceDWrite.cpp
new file mode 100644
index 0000000000..e0b599fa76
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+++ b/gfx/2d/NativeFontResourceDWrite.cpp
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "NativeFontResourceDWrite.h"
+#include "UnscaledFontDWrite.h"
+
+#include <unordered_map>
+
+#include "Logging.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/StaticMutex.h"
+#include "nsTArray.h"
+
+namespace mozilla {
+namespace gfx {
+
+static StaticMutex sFontFileStreamsMutex MOZ_UNANNOTATED;
+static uint64_t sNextFontFileKey = 0;
+static std::unordered_map<uint64_t, IDWriteFontFileStream*> sFontFileStreams;
+
+class DWriteFontFileLoader : public IDWriteFontFileLoader {
+ public:
+ DWriteFontFileLoader() {}
+
+ // IUnknown interface
+ IFACEMETHOD(QueryInterface)(IID const& iid, OUT void** ppObject) {
+ if (iid == __uuidof(IDWriteFontFileLoader)) {
+ *ppObject = static_cast<IDWriteFontFileLoader*>(this);
+ return S_OK;
+ } else if (iid == __uuidof(IUnknown)) {
+ *ppObject = static_cast<IUnknown*>(this);
+ return S_OK;
+ } else {
+ return E_NOINTERFACE;
+ }
+ }
+
+ IFACEMETHOD_(ULONG, AddRef)() { return 1; }
+
+ IFACEMETHOD_(ULONG, Release)() { return 1; }
+
+ // IDWriteFontFileLoader methods
+ /**
+ * Important! Note the key here has to be a uint64_t that will have been
+ * generated by incrementing sNextFontFileKey.
+ */
+ virtual HRESULT STDMETHODCALLTYPE CreateStreamFromKey(
+ void const* fontFileReferenceKey, UINT32 fontFileReferenceKeySize,
+ OUT IDWriteFontFileStream** fontFileStream);
+
+ /**
+ * Gets the singleton loader instance. Note that when using this font
+ * loader, the key must be a uint64_t that has been generated by incrementing
+ * sNextFontFileKey.
+ * Also note that this is _not_ threadsafe.
+ */
+ static IDWriteFontFileLoader* Instance() {
+ if (!mInstance) {
+ mInstance = new DWriteFontFileLoader();
+ Factory::GetDWriteFactory()->RegisterFontFileLoader(mInstance);
+ }
+ return mInstance;
+ }
+
+ private:
+ static IDWriteFontFileLoader* mInstance;
+};
+
+class DWriteFontFileStream final : public IDWriteFontFileStream {
+ public:
+ explicit DWriteFontFileStream(uint64_t aFontFileKey);
+
+ /**
+ * Used by the FontFileLoader to create a new font stream,
+ * this font stream is created from data in memory. The memory
+ * passed may be released after object creation, it will be
+ * copied internally.
+ *
+ * @param aData Font data
+ */
+ bool Initialize(uint8_t* aData, uint32_t aSize);
+
+ // IUnknown interface
+ IFACEMETHOD(QueryInterface)(IID const& iid, OUT void** ppObject) {
+ if (iid == __uuidof(IDWriteFontFileStream)) {
+ *ppObject = static_cast<IDWriteFontFileStream*>(this);
+ return S_OK;
+ } else if (iid == __uuidof(IUnknown)) {
+ *ppObject = static_cast<IUnknown*>(this);
+ return S_OK;
+ } else {
+ return E_NOINTERFACE;
+ }
+ }
+
+ IFACEMETHOD_(ULONG, AddRef)() { return ++mRefCnt; }
+
+ IFACEMETHOD_(ULONG, Release)() {
+ uint32_t count = --mRefCnt;
+ if (count == 0) {
+ // Avoid locking unless necessary. Verify the refcount hasn't changed
+ // while locked. Delete within the scope of the lock when zero.
+ StaticMutexAutoLock lock(sFontFileStreamsMutex);
+ if (0 != mRefCnt) {
+ return mRefCnt;
+ }
+ delete this;
+ }
+ return count;
+ }
+
+ // IDWriteFontFileStream methods
+ virtual HRESULT STDMETHODCALLTYPE
+ ReadFileFragment(void const** fragmentStart, UINT64 fileOffset,
+ UINT64 fragmentSize, OUT void** fragmentContext);
+
+ virtual void STDMETHODCALLTYPE ReleaseFileFragment(void* fragmentContext);
+
+ virtual HRESULT STDMETHODCALLTYPE GetFileSize(OUT UINT64* fileSize);
+
+ virtual HRESULT STDMETHODCALLTYPE GetLastWriteTime(OUT UINT64* lastWriteTime);
+
+ private:
+ nsTArray<uint8_t> mData;
+ Atomic<uint32_t> mRefCnt;
+ uint64_t mFontFileKey;
+
+ ~DWriteFontFileStream();
+};
+
+IDWriteFontFileLoader* DWriteFontFileLoader::mInstance = nullptr;
+
+HRESULT STDMETHODCALLTYPE DWriteFontFileLoader::CreateStreamFromKey(
+ const void* fontFileReferenceKey, UINT32 fontFileReferenceKeySize,
+ IDWriteFontFileStream** fontFileStream) {
+ if (!fontFileReferenceKey || !fontFileStream) {
+ return E_POINTER;
+ }
+
+ StaticMutexAutoLock lock(sFontFileStreamsMutex);
+ uint64_t fontFileKey = *static_cast<const uint64_t*>(fontFileReferenceKey);
+ auto found = sFontFileStreams.find(fontFileKey);
+ if (found == sFontFileStreams.end()) {
+ *fontFileStream = nullptr;
+ return E_FAIL;
+ }
+
+ found->second->AddRef();
+ *fontFileStream = found->second;
+ return S_OK;
+}
+
+DWriteFontFileStream::DWriteFontFileStream(uint64_t aFontFileKey)
+ : mRefCnt(0), mFontFileKey(aFontFileKey) {}
+
+DWriteFontFileStream::~DWriteFontFileStream() {
+ sFontFileStreams.erase(mFontFileKey);
+}
+
+bool DWriteFontFileStream::Initialize(uint8_t* aData, uint32_t aSize) {
+ if (!mData.SetLength(aSize, fallible)) {
+ return false;
+ }
+ memcpy(mData.Elements(), aData, aSize);
+ return true;
+}
+
+HRESULT STDMETHODCALLTYPE DWriteFontFileStream::GetFileSize(UINT64* fileSize) {
+ *fileSize = mData.Length();
+ return S_OK;
+}
+
+HRESULT STDMETHODCALLTYPE
+DWriteFontFileStream::GetLastWriteTime(UINT64* lastWriteTime) {
+ return E_NOTIMPL;
+}
+
+HRESULT STDMETHODCALLTYPE DWriteFontFileStream::ReadFileFragment(
+ const void** fragmentStart, UINT64 fileOffset, UINT64 fragmentSize,
+ void** fragmentContext) {
+ // We are required to do bounds checking.
+ if (fileOffset + fragmentSize > mData.Length()) {
+ return E_FAIL;
+ }
+
+ // truncate the 64 bit fileOffset to size_t sized index into mData
+ size_t index = static_cast<size_t>(fileOffset);
+
+ // We should be alive for the duration of this.
+ *fragmentStart = &mData[index];
+ *fragmentContext = nullptr;
+ return S_OK;
+}
+
+void STDMETHODCALLTYPE
+DWriteFontFileStream::ReleaseFileFragment(void* fragmentContext) {}
+
+/* static */
+already_AddRefed<NativeFontResourceDWrite> NativeFontResourceDWrite::Create(
+ uint8_t* aFontData, uint32_t aDataLength) {
+ RefPtr<IDWriteFactory> factory = Factory::GetDWriteFactory();
+ if (!factory) {
+ gfxWarning() << "Failed to get DWrite Factory.";
+ return nullptr;
+ }
+
+ sFontFileStreamsMutex.Lock();
+ uint64_t fontFileKey = sNextFontFileKey++;
+ RefPtr<DWriteFontFileStream> ffsRef = new DWriteFontFileStream(fontFileKey);
+ if (!ffsRef->Initialize(aFontData, aDataLength)) {
+ sFontFileStreamsMutex.Unlock();
+ gfxWarning() << "Failed to create DWriteFontFileStream.";
+ return nullptr;
+ }
+ sFontFileStreams[fontFileKey] = ffsRef;
+ sFontFileStreamsMutex.Unlock();
+
+ RefPtr<IDWriteFontFile> fontFile;
+ HRESULT hr = factory->CreateCustomFontFileReference(
+ &fontFileKey, sizeof(fontFileKey), DWriteFontFileLoader::Instance(),
+ getter_AddRefs(fontFile));
+ if (FAILED(hr)) {
+ gfxWarning() << "Failed to load font file from data!";
+ return nullptr;
+ }
+
+ BOOL isSupported;
+ DWRITE_FONT_FILE_TYPE fileType;
+ DWRITE_FONT_FACE_TYPE faceType;
+ UINT32 numberOfFaces;
+ hr = fontFile->Analyze(&isSupported, &fileType, &faceType, &numberOfFaces);
+ if (FAILED(hr) || !isSupported) {
+ gfxWarning() << "Font file is not supported.";
+ return nullptr;
+ }
+
+ RefPtr<NativeFontResourceDWrite> fontResource =
+ new NativeFontResourceDWrite(factory, fontFile.forget(), ffsRef.forget(),
+ faceType, numberOfFaces, aDataLength);
+ return fontResource.forget();
+}
+
+already_AddRefed<UnscaledFont> NativeFontResourceDWrite::CreateUnscaledFont(
+ uint32_t aIndex, const uint8_t* aInstanceData,
+ uint32_t aInstanceDataLength) {
+ if (aIndex >= mNumberOfFaces) {
+ gfxWarning() << "Font face index is too high for font resource.";
+ return nullptr;
+ }
+
+ IDWriteFontFile* fontFile = mFontFile;
+ RefPtr<IDWriteFontFace> fontFace;
+ if (FAILED(mFactory->CreateFontFace(mFaceType, 1, &fontFile, aIndex,
+ DWRITE_FONT_SIMULATIONS_NONE,
+ getter_AddRefs(fontFace)))) {
+ gfxWarning() << "Failed to create font face from font file data.";
+ return nullptr;
+ }
+
+ RefPtr<UnscaledFont> unscaledFont = new UnscaledFontDWrite(fontFace, nullptr);
+
+ return unscaledFont.forget();
+}
+
+} // namespace gfx
+} // namespace mozilla