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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/hardware_resource_provider.h"
#include <GLES2/gl2ext.h>
#include "base/debug/trace_event.h"
#include "base/synchronization/waitable_event.h"
#include "cobalt/base/polymorphic_downcast.h"
#include "cobalt/renderer/backend/egl/graphics_system.h"
#include "cobalt/renderer/backend/egl/utils.h"
#include "cobalt/renderer/rasterizer/skia/cobalt_skia_type_conversions.h"
#include "cobalt/renderer/rasterizer/skia/font.h"
#include "cobalt/renderer/rasterizer/skia/gl_format_conversions.h"
#include "cobalt/renderer/rasterizer/skia/glyph_buffer.h"
#include "cobalt/renderer/rasterizer/skia/hardware_image.h"
#include "cobalt/renderer/rasterizer/skia/hardware_mesh.h"
#include "cobalt/renderer/rasterizer/skia/skia/src/ports/SkFontMgr_cobalt.h"
#include "cobalt/renderer/rasterizer/skia/skia/src/ports/SkTypeface_cobalt.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::Image;
using cobalt::render_tree::ImageData;
using cobalt::render_tree::RawImageMemory;
namespace cobalt {
namespace renderer {
namespace rasterizer {
namespace skia {
HardwareResourceProvider::HardwareResourceProvider(
backend::GraphicsContextEGL* cobalt_context, GrContext* gr_context,
SubmitOffscreenCallback submit_offscreen_callback,
bool purge_skia_font_caches_on_destruction)
: cobalt_context_(cobalt_context),
gr_context_(gr_context),
submit_offscreen_callback_(submit_offscreen_callback),
purge_skia_font_caches_on_destruction_(
purge_skia_font_caches_on_destruction),
self_message_loop_(MessageLoop::current()) {
// Initialize the font manager now to ensure that it doesn't get initialized
// on multiple threads simultaneously later.
SkSafeUnref(SkFontMgr::RefDefault());
#if SB_API_VERSION >= 4 && SB_HAS(GRAPHICS)
decode_target_graphics_context_provider_.egl_display =
cobalt_context_->system_egl()->GetDisplay();
decode_target_graphics_context_provider_.egl_context =
cobalt_context_->GetContext();
decode_target_graphics_context_provider_.gles_context_runner =
&HardwareResourceProvider::GraphicsContextRunner;
decode_target_graphics_context_provider_.gles_context_runner_context = this;
#endif // SB_API_VERSION >= 4 && \
SB_HAS(GRAPHICS)
}
HardwareResourceProvider::~HardwareResourceProvider() {
if (purge_skia_font_caches_on_destruction_) {
text_shaper_.PurgeCaches();
SkAutoTUnref<SkFontMgr> font_manager(SkFontMgr::RefDefault());
SkFontMgr_Cobalt* cobalt_font_manager =
base::polymorphic_downcast<SkFontMgr_Cobalt*>(font_manager.get());
cobalt_font_manager->PurgeCaches();
}
}
void HardwareResourceProvider::Finish() {
// Wait for any resource-related to complete (by waiting for all tasks to
// complete).
if (MessageLoop::current() != self_message_loop_) {
base::WaitableEvent completion(true, false);
self_message_loop_->PostTask(FROM_HERE,
base::Bind(&base::WaitableEvent::Signal,
base::Unretained(&completion)));
completion.Wait();
}
}
bool HardwareResourceProvider::PixelFormatSupported(
render_tree::PixelFormat pixel_format) {
return pixel_format == render_tree::kPixelFormatRGBA8;
}
bool HardwareResourceProvider::AlphaFormatSupported(
render_tree::AlphaFormat alpha_format) {
return alpha_format == render_tree::kAlphaFormatPremultiplied ||
alpha_format == render_tree::kAlphaFormatOpaque;
}
scoped_ptr<ImageData> HardwareResourceProvider::AllocateImageData(
const math::Size& size, render_tree::PixelFormat pixel_format,
render_tree::AlphaFormat alpha_format) {
TRACE_EVENT0("cobalt::renderer",
"HardwareResourceProvider::AllocateImageData()");
DCHECK_EQ(render_tree::kPixelFormatRGBA8, pixel_format)
<< "Currently, only RGBA8 is supported.";
DCHECK(PixelFormatSupported(pixel_format));
DCHECK(AlphaFormatSupported(alpha_format));
return scoped_ptr<ImageData>(new HardwareImageData(
cobalt_context_->system_egl()->AllocateTextureData(
size, ConvertRenderTreeFormatToGL(pixel_format)),
pixel_format, alpha_format));
}
scoped_refptr<render_tree::Image> HardwareResourceProvider::CreateImage(
scoped_ptr<ImageData> source_data) {
TRACE_EVENT0("cobalt::renderer", "HardwareResourceProvider::CreateImage()");
scoped_ptr<HardwareImageData> skia_hardware_source_data(
base::polymorphic_downcast<HardwareImageData*>(source_data.release()));
const render_tree::ImageDataDescriptor& descriptor =
skia_hardware_source_data->GetDescriptor();
DCHECK(descriptor.alpha_format == render_tree::kAlphaFormatPremultiplied ||
descriptor.alpha_format == render_tree::kAlphaFormatOpaque);
#if defined(COBALT_BUILD_TYPE_DEBUG)
Image::DCheckForPremultipliedAlpha(descriptor.size, descriptor.pitch_in_bytes,
descriptor.pixel_format,
skia_hardware_source_data->GetMemory());
#endif
// Construct a frontend image from this data, which internally will send
// a message to the rasterizer thread passing along the image data where the
// backend texture will be constructed, and associated with this frontend
// texture through a map that will be accessed when the rasterizer visits
// any subsequently submitted render trees referencing the frontend image.
return make_scoped_refptr(new HardwareFrontendImage(
skia_hardware_source_data.Pass(), cobalt_context_, gr_context_,
self_message_loop_));
}
#if SB_API_VERSION >= 4 && SB_HAS(GRAPHICS)
scoped_refptr<render_tree::Image>
HardwareResourceProvider::CreateImageFromSbDecodeTarget(
SbDecodeTarget decode_target) {
SbDecodeTargetInfo info;
SbMemorySet(&info, 0, sizeof(info));
CHECK(SbDecodeTargetGetInfo(decode_target, &info));
// There is limited format support at this time.
DCHECK_EQ(info.format, kSbDecodeTargetFormat1PlaneRGBA);
const SbDecodeTargetInfoPlane& plane = info.planes[kSbDecodeTargetPlaneRGBA];
int gl_handle = plane.texture;
render_tree::AlphaFormat alpha_format =
info.is_opaque ? render_tree::kAlphaFormatOpaque
: render_tree::kAlphaFormatUnpremultiplied;
scoped_ptr<math::Rect> content_region;
if (plane.content_region.left != 0 || plane.content_region.top != 0 ||
plane.content_region.right != plane.width ||
plane.content_region.bottom != plane.height) {
content_region.reset(
new math::Rect(plane.content_region.left, plane.content_region.top,
plane.content_region.right - plane.content_region.left,
plane.content_region.bottom - plane.content_region.top));
}
scoped_ptr<backend::TextureEGL> texture(new backend::TextureEGL(
cobalt_context_, gl_handle, math::Size(plane.width, plane.height),
GL_RGBA, plane.gl_texture_target,
base::Bind(&SbDecodeTargetRelease, decode_target)));
return make_scoped_refptr(new HardwareFrontendImage(
texture.Pass(), alpha_format, cobalt_context_, gr_context_,
content_region.Pass(), self_message_loop_));
}
namespace {
void RunGraphicsContextRunnerOnRasterizerThread(
SbDecodeTargetGlesContextRunnerTarget target_function,
void* target_function_context,
backend::GraphicsContextEGL* graphics_context,
base::WaitableEvent* done_event) {
backend::GraphicsContextEGL::ScopedMakeCurrent make_current(graphics_context);
target_function(target_function_context);
done_event->Signal();
}
} // namespace
// static
void HardwareResourceProvider::GraphicsContextRunner(
SbDecodeTargetGraphicsContextProvider* graphics_context_provider,
SbDecodeTargetGlesContextRunnerTarget target_function,
void* target_function_context) {
SbDecodeTarget decode_target = kSbDecodeTargetInvalid;
HardwareResourceProvider* provider =
reinterpret_cast<HardwareResourceProvider*>(
graphics_context_provider->gles_context_runner_context);
if (MessageLoop::current() != provider->self_message_loop_) {
// Post a task to the rasterizer thread to have it run the requested
// function, and wait for it to complete before returning.
base::WaitableEvent done_event(true, false);
provider->self_message_loop_->PostTask(
FROM_HERE, base::Bind(&RunGraphicsContextRunnerOnRasterizerThread,
target_function, target_function_context,
provider->cobalt_context_, &done_event));
done_event.Wait();
} else {
// If we are already on the rasterizer thread, just run the function
// directly.
backend::GraphicsContextEGL::ScopedMakeCurrent make_current(
provider->cobalt_context_);
target_function(target_function_context);
}
}
#endif // SB_API_VERSION >= 4 && \
SB_HAS(GRAPHICS)
scoped_ptr<RawImageMemory> HardwareResourceProvider::AllocateRawImageMemory(
size_t size_in_bytes, size_t alignment) {
TRACE_EVENT0("cobalt::renderer",
"HardwareResourceProvider::AllocateRawImageMemory()");
return scoped_ptr<RawImageMemory>(new HardwareRawImageMemory(
cobalt_context_->system_egl()->AllocateRawTextureMemory(size_in_bytes,
alignment)));
}
scoped_refptr<render_tree::Image>
HardwareResourceProvider::CreateMultiPlaneImageFromRawMemory(
scoped_ptr<RawImageMemory> raw_image_memory,
const render_tree::MultiPlaneImageDataDescriptor& descriptor) {
TRACE_EVENT0(
"cobalt::renderer",
"HardwareResourceProvider::CreateMultiPlaneImageFromRawMemory()");
DCHECK((render_tree::kMultiPlaneImageFormatYUV2PlaneBT709 ==
descriptor.image_format() &&
2 == descriptor.num_planes()) ||
(render_tree::kMultiPlaneImageFormatYUV3PlaneBT709 ==
descriptor.image_format() &&
3 == descriptor.num_planes()))
<< "Currently we only support 2-plane or 3-plane YUV multi plane images.";
scoped_ptr<HardwareRawImageMemory> skia_hardware_raw_image_memory(
base::polymorphic_downcast<HardwareRawImageMemory*>(
raw_image_memory.release()));
return make_scoped_refptr(new HardwareMultiPlaneImage(
skia_hardware_raw_image_memory.Pass(), descriptor, cobalt_context_,
gr_context_, self_message_loop_));
}
bool HardwareResourceProvider::HasLocalFontFamily(
const char* font_family_name) const {
TRACE_EVENT0("cobalt::renderer",
"HardwareResourceProvider::HasLocalFontFamily()");
SkAutoTUnref<SkFontMgr> font_manager(SkFontMgr::RefDefault());
SkAutoTUnref<SkFontStyleSet> style_set(
font_manager->matchFamily(font_family_name));
return style_set->count() > 0;
}
scoped_refptr<render_tree::Typeface> HardwareResourceProvider::GetLocalTypeface(
const char* font_family_name, render_tree::FontStyle font_style) {
TRACE_EVENT0("cobalt::renderer",
"HardwareResourceProvider::GetLocalTypeface()");
SkAutoTUnref<SkFontMgr> font_manager(SkFontMgr::RefDefault());
SkAutoTUnref<SkTypeface_Cobalt> typeface(
base::polymorphic_downcast<SkTypeface_Cobalt*>(
font_manager->matchFamilyStyle(
font_family_name, CobaltFontStyleToSkFontStyle(font_style))));
return scoped_refptr<render_tree::Typeface>(new SkiaTypeface(typeface));
}
scoped_refptr<render_tree::Typeface>
HardwareResourceProvider::GetLocalTypefaceByFaceNameIfAvailable(
const char* font_face_name) {
TRACE_EVENT0("cobalt::renderer",
"HardwareResourceProvider::GetLocalTypefaceIfAvailable()");
SkAutoTUnref<SkFontMgr> font_manager(SkFontMgr::RefDefault());
SkFontMgr_Cobalt* cobalt_font_manager =
base::polymorphic_downcast<SkFontMgr_Cobalt*>(font_manager.get());
SkTypeface_Cobalt* typeface = base::polymorphic_downcast<SkTypeface_Cobalt*>(
cobalt_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>
HardwareResourceProvider::GetCharacterFallbackTypeface(
int32 character, render_tree::FontStyle font_style,
const std::string& language) {
TRACE_EVENT0("cobalt::renderer",
"HardwareResourceProvider::GetCharacterFallbackTypeface()");
SkAutoTUnref<SkFontMgr> font_manager(SkFontMgr::RefDefault());
SkAutoTUnref<SkTypeface_Cobalt> typeface(
base::polymorphic_downcast<SkTypeface_Cobalt*>(
font_manager->matchFamilyStyleCharacter(
NULL, CobaltFontStyleToSkFontStyle(font_style), language.c_str(),
character)));
return scoped_refptr<render_tree::Typeface>(new SkiaTypeface(typeface));
}
scoped_refptr<render_tree::Typeface>
HardwareResourceProvider::CreateTypefaceFromRawData(
scoped_ptr<render_tree::ResourceProvider::RawTypefaceDataVector> raw_data,
std::string* error_string) {
TRACE_EVENT0("cobalt::renderer",
"HardwareResourceProvider::CreateFontFromData()");
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<SkStreamAsset> stream(new SkMemoryStream(skia_data));
SkAutoTUnref<SkTypeface_Cobalt> typeface(
base::polymorphic_downcast<SkTypeface_Cobalt*>(
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>
HardwareResourceProvider::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>
HardwareResourceProvider::CreateGlyphBuffer(
const std::string& utf8_string,
const scoped_refptr<render_tree::Font>& font) {
return text_shaper_.CreateGlyphBuffer(utf8_string, font);
}
float HardwareResourceProvider::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);
}
scoped_refptr<render_tree::Mesh> HardwareResourceProvider::CreateMesh(
scoped_ptr<std::vector<render_tree::Mesh::Vertex> > vertices,
render_tree::Mesh::DrawMode draw_mode) {
return new HardwareMesh(vertices.Pass(), draw_mode);
}
scoped_refptr<render_tree::Image> HardwareResourceProvider::DrawOffscreenImage(
const scoped_refptr<render_tree::Node>& root) {
return make_scoped_refptr(new HardwareFrontendImage(
root, submit_offscreen_callback_, cobalt_context_, gr_context_,
self_message_loop_));
}
} // namespace skia
} // namespace rasterizer
} // namespace renderer
} // namespace cobalt