| /* |
| * Copyright 2014 Google Inc. All Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "cobalt/renderer/rasterizer/skia/software_resource_provider.h" |
| |
| #include "base/debug/trace_event.h" |
| #include "cobalt/base/polymorphic_downcast.h" |
| #include "cobalt/renderer/rasterizer/skia/cobalt_skia_type_conversions.h" |
| #include "cobalt/renderer/rasterizer/skia/font.h" |
| #include "cobalt/renderer/rasterizer/skia/glyph_buffer.h" |
| #include "cobalt/renderer/rasterizer/skia/skia/src/ports/SkFontMgr_cobalt.h" |
| #include "cobalt/renderer/rasterizer/skia/software_image.h" |
| #include "cobalt/renderer/rasterizer/skia/typeface.h" |
| #include "third_party/ots/include/opentype-sanitiser.h" |
| #include "third_party/ots/include/ots-memory-stream.h" |
| #include "third_party/skia/include/core/SkData.h" |
| #include "third_party/skia/include/core/SkStream.h" |
| #include "third_party/skia/include/core/SkTypeface.h" |
| |
| using cobalt::render_tree::ImageData; |
| |
| namespace cobalt { |
| namespace renderer { |
| namespace rasterizer { |
| namespace skia { |
| |
| SoftwareResourceProvider::SoftwareResourceProvider() |
| : font_manager_(SkFontMgr::RefDefault()) {} |
| |
| bool SoftwareResourceProvider::PixelFormatSupported( |
| render_tree::PixelFormat pixel_format) { |
| return RenderTreeSurfaceFormatToSkia(pixel_format) == kN32_SkColorType; |
| } |
| |
| bool SoftwareResourceProvider::AlphaFormatSupported( |
| render_tree::AlphaFormat alpha_format) { |
| return alpha_format == render_tree::kAlphaFormatPremultiplied || |
| alpha_format == render_tree::kAlphaFormatOpaque; |
| } |
| |
| scoped_ptr<ImageData> SoftwareResourceProvider::AllocateImageData( |
| const math::Size& size, render_tree::PixelFormat pixel_format, |
| render_tree::AlphaFormat alpha_format) { |
| TRACE_EVENT0("cobalt::renderer", |
| "SoftwareResourceProvider::AllocateImageData()"); |
| DCHECK(PixelFormatSupported(pixel_format)); |
| DCHECK(AlphaFormatSupported(alpha_format)); |
| return scoped_ptr<ImageData>( |
| new SoftwareImageData(size, pixel_format, alpha_format)); |
| } |
| |
| scoped_refptr<render_tree::Image> SoftwareResourceProvider::CreateImage( |
| scoped_ptr<ImageData> source_data) { |
| TRACE_EVENT0("cobalt::renderer", "SoftwareResourceProvider::CreateImage()"); |
| scoped_ptr<SoftwareImageData> skia_source_data( |
| base::polymorphic_downcast<SoftwareImageData*>(source_data.release())); |
| |
| return scoped_refptr<render_tree::Image>( |
| new SoftwareImage(skia_source_data.Pass())); |
| } |
| |
| scoped_ptr<render_tree::RawImageMemory> |
| SoftwareResourceProvider::AllocateRawImageMemory(size_t size_in_bytes, |
| size_t alignment) { |
| TRACE_EVENT0("cobalt::renderer", |
| "SoftwareResourceProvider::AllocateRawImageMemory()"); |
| |
| return scoped_ptr<render_tree::RawImageMemory>( |
| new SoftwareRawImageMemory(size_in_bytes, alignment)); |
| } |
| |
| scoped_refptr<render_tree::Image> |
| SoftwareResourceProvider::CreateMultiPlaneImageFromRawMemory( |
| scoped_ptr<render_tree::RawImageMemory> raw_image_memory, |
| const render_tree::MultiPlaneImageDataDescriptor& descriptor) { |
| TRACE_EVENT0( |
| "cobalt::renderer", |
| "SoftwareResourceProvider::CreateMultiPlaneImageFromRawMemory()"); |
| |
| scoped_ptr<SoftwareRawImageMemory> skia_software_raw_image_memory( |
| base::polymorphic_downcast<SoftwareRawImageMemory*>( |
| raw_image_memory.release())); |
| |
| return make_scoped_refptr(new SoftwareMultiPlaneImage( |
| skia_software_raw_image_memory.Pass(), descriptor)); |
| } |
| |
| bool SoftwareResourceProvider::HasLocalFontFamily( |
| const char* font_family_name) const { |
| TRACE_EVENT0("cobalt::renderer", |
| "SoftwareResourceProvider::HasLocalFontFamily()"); |
| |
| SkAutoTUnref<SkFontStyleSet> style_set( |
| font_manager_->matchFamily(font_family_name)); |
| return style_set->count() > 0; |
| } |
| |
| scoped_refptr<render_tree::Typeface> SoftwareResourceProvider::GetLocalTypeface( |
| const char* font_family_name, render_tree::FontStyle font_style) { |
| TRACE_EVENT0("cobalt::renderer", |
| "SoftwareResourceProvider::GetLocalTypeface()"); |
| |
| SkAutoTUnref<SkTypeface> typeface(font_manager_->matchFamilyStyle( |
| font_family_name, CobaltFontStyleToSkFontStyle(font_style))); |
| return scoped_refptr<render_tree::Typeface>(new SkiaTypeface(typeface)); |
| } |
| |
| scoped_refptr<render_tree::Typeface> |
| SoftwareResourceProvider::GetLocalTypefaceByFaceNameIfAvailable( |
| const std::string& font_face_name) { |
| TRACE_EVENT0("cobalt::renderer", |
| "SoftwareResourceProvider::GetLocalTypefaceIfAvailable()"); |
| |
| SkFontMgr_Cobalt* font_manager = |
| base::polymorphic_downcast<SkFontMgr_Cobalt*>(font_manager_.get()); |
| |
| SkTypeface* typeface = font_manager->matchFaceName(font_face_name); |
| if (typeface != NULL) { |
| SkAutoTUnref<SkTypeface> typeface_unref_helper(typeface); |
| return scoped_refptr<render_tree::Typeface>(new SkiaTypeface(typeface)); |
| } |
| |
| return NULL; |
| } |
| |
| scoped_refptr<render_tree::Typeface> |
| SoftwareResourceProvider::GetCharacterFallbackTypeface( |
| int32 character, render_tree::FontStyle font_style, |
| const std::string& language) { |
| TRACE_EVENT0("cobalt::renderer", |
| "SoftwareResourceProvider::GetCharacterFallbackTypeface()"); |
| |
| SkAutoTUnref<SkTypeface> typeface(font_manager_->matchFamilyStyleCharacter( |
| 0, CobaltFontStyleToSkFontStyle(font_style), language.c_str(), |
| character)); |
| return scoped_refptr<render_tree::Typeface>(new SkiaTypeface(typeface)); |
| } |
| |
| scoped_refptr<render_tree::Typeface> |
| SoftwareResourceProvider::CreateTypefaceFromRawData( |
| scoped_ptr<render_tree::ResourceProvider::RawTypefaceDataVector> raw_data, |
| std::string* error_string) { |
| TRACE_EVENT0("cobalt::renderer", |
| "SoftwareResourceProvider::CreateFontFromRawData()"); |
| |
| if (raw_data == NULL) { |
| *error_string = "No data to process"; |
| return NULL; |
| } |
| |
| ots::ExpandingMemoryStream sanitized_data( |
| raw_data->size(), render_tree::ResourceProvider::kMaxTypefaceDataSize); |
| if (!ots::Process(&sanitized_data, &((*raw_data)[0]), raw_data->size())) { |
| *error_string = "OpenType sanitizer unable to process data"; |
| return NULL; |
| } |
| |
| // Free the raw data now that we're done with it. |
| raw_data.reset(); |
| |
| SkAutoTUnref<SkData> skia_data(SkData::NewWithCopy( |
| sanitized_data.get(), static_cast<size_t>(sanitized_data.Tell()))); |
| |
| SkAutoTUnref<SkStream> stream(new SkMemoryStream(skia_data)); |
| SkAutoTUnref<SkTypeface> typeface(SkTypeface::CreateFromStream(stream)); |
| if (typeface) { |
| return scoped_refptr<render_tree::Typeface>(new SkiaTypeface(typeface)); |
| } else { |
| *error_string = "Skia unable to create typeface"; |
| return NULL; |
| } |
| } |
| |
| scoped_refptr<render_tree::GlyphBuffer> |
| SoftwareResourceProvider::CreateGlyphBuffer( |
| const char16* text_buffer, size_t text_length, const std::string& language, |
| bool is_rtl, render_tree::FontProvider* font_provider) { |
| return text_shaper_.CreateGlyphBuffer(text_buffer, text_length, language, |
| is_rtl, font_provider); |
| } |
| |
| scoped_refptr<render_tree::GlyphBuffer> |
| SoftwareResourceProvider::CreateGlyphBuffer( |
| const std::string& utf8_string, |
| const scoped_refptr<render_tree::Font>& font) { |
| return text_shaper_.CreateGlyphBuffer(utf8_string, font); |
| } |
| |
| float SoftwareResourceProvider::GetTextWidth( |
| const char16* text_buffer, size_t text_length, const std::string& language, |
| bool is_rtl, render_tree::FontProvider* font_provider, |
| render_tree::FontVector* maybe_used_fonts) { |
| return text_shaper_.GetTextWidth(text_buffer, text_length, language, is_rtl, |
| font_provider, maybe_used_fonts); |
| } |
| |
| } // namespace skia |
| } // namespace rasterizer |
| } // namespace renderer |
| } // namespace cobalt |