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/*
* 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