blob: dfbf9afe19a926e9705d9e31f7ddcc5bd49bb53b [file] [log] [blame]
// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/renderer/skia_benchmarking_extension.h"
#include <stddef.h>
#include <stdint.h>
#include "base/base64.h"
#include "base/time/time.h"
#include "base/values.h"
#include "cc/base/math_util.h"
#include "content/public/child/v8_value_converter.h"
#include "content/public/renderer/chrome_object_extensions_utils.h"
#include "content/renderer/render_thread_impl.h"
#include "gin/arguments.h"
#include "gin/data_object_builder.h"
#include "gin/handle.h"
#include "gin/object_template_builder.h"
#include "skia/ext/benchmarking_canvas.h"
#include "third_party/WebKit/public/web/WebArrayBuffer.h"
#include "third_party/WebKit/public/web/WebArrayBufferConverter.h"
#include "third_party/WebKit/public/web/WebFrame.h"
#include "third_party/WebKit/public/web/WebKit.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "third_party/skia/include/core/SkColorPriv.h"
#include "third_party/skia/include/core/SkGraphics.h"
#include "third_party/skia/include/core/SkImageDeserializer.h"
#include "third_party/skia/include/core/SkPicture.h"
#include "third_party/skia/include/core/SkStream.h"
#include "ui/gfx/codec/jpeg_codec.h"
#include "ui/gfx/codec/png_codec.h"
#include "ui/gfx/geometry/rect_conversions.h"
#include "ui/gfx/skia_util.h"
#include "v8/include/v8.h"
namespace content {
namespace {
class Picture {
public:
gfx::Rect layer_rect;
sk_sp<SkPicture> picture;
};
class GfxImageDeserializer final : public SkImageDeserializer {
public:
sk_sp<SkImage> makeFromData(SkData* data, const SkIRect* subset) override {
return makeFromMemory(data->data(), data->size(), subset);
}
sk_sp<SkImage> makeFromMemory(const void* data,
size_t size,
const SkIRect* subset) override {
sk_sp<SkImage> img;
// Try PNG first.
SkBitmap bitmap;
if (gfx::PNGCodec::Decode((const uint8_t*)data, size, &bitmap)) {
bitmap.setImmutable();
img = SkImage::MakeFromBitmap(bitmap);
} else {
// Try JPEG.
std::unique_ptr<SkBitmap> decoded_jpeg(
gfx::JPEGCodec::Decode((const uint8_t*)data, size));
if (decoded_jpeg) {
decoded_jpeg->setImmutable();
img = SkImage::MakeFromBitmap(*decoded_jpeg);
}
}
if (img && subset)
img = img->makeSubset(*subset);
return img;
}
};
std::unique_ptr<base::Value> ParsePictureArg(v8::Isolate* isolate,
v8::Local<v8::Value> arg) {
std::unique_ptr<content::V8ValueConverter> converter(
content::V8ValueConverter::create());
return std::unique_ptr<base::Value>(
converter->FromV8Value(arg, isolate->GetCurrentContext()));
}
std::unique_ptr<Picture> CreatePictureFromEncodedString(
const std::string& encoded) {
std::string decoded;
base::Base64Decode(encoded, &decoded);
SkMemoryStream stream(decoded.data(), decoded.size());
GfxImageDeserializer deserializer;
sk_sp<SkPicture> skpicture =
SkPicture::MakeFromStream(&stream, &deserializer);
if (!skpicture)
return nullptr;
std::unique_ptr<Picture> picture(new Picture);
picture->layer_rect = gfx::SkIRectToRect(skpicture->cullRect().roundOut());
picture->picture = std::move(skpicture);
return picture;
}
std::unique_ptr<Picture> ParsePictureStr(v8::Isolate* isolate,
v8::Local<v8::Value> arg) {
std::unique_ptr<base::Value> picture_value = ParsePictureArg(isolate, arg);
if (!picture_value)
return nullptr;
// Decode the picture from base64.
std::string encoded;
if (!picture_value->GetAsString(&encoded))
return nullptr;
return CreatePictureFromEncodedString(encoded);
}
std::unique_ptr<Picture> ParsePictureHash(v8::Isolate* isolate,
v8::Local<v8::Value> arg) {
std::unique_ptr<base::Value> picture_value = ParsePictureArg(isolate, arg);
if (!picture_value)
return nullptr;
const base::DictionaryValue* value = nullptr;
if (!picture_value->GetAsDictionary(&value))
return nullptr;
// Decode the picture from base64.
std::string encoded;
if (!value->GetString("skp64", &encoded))
return nullptr;
return CreatePictureFromEncodedString(encoded);
}
class PicturePlaybackController : public SkPicture::AbortCallback {
public:
PicturePlaybackController(const skia::BenchmarkingCanvas& canvas,
size_t count)
: canvas_(canvas), playback_count_(count) {}
bool abort() override { return canvas_.CommandCount() > playback_count_; }
private:
const skia::BenchmarkingCanvas& canvas_;
size_t playback_count_;
};
} // namespace
gin::WrapperInfo SkiaBenchmarking::kWrapperInfo = {gin::kEmbedderNativeGin};
// static
void SkiaBenchmarking::Install(blink::WebFrame* frame) {
v8::Isolate* isolate = blink::MainThreadIsolate();
v8::HandleScope handle_scope(isolate);
v8::Local<v8::Context> context = frame->MainWorldScriptContext();
if (context.IsEmpty())
return;
v8::Context::Scope context_scope(context);
gin::Handle<SkiaBenchmarking> controller =
gin::CreateHandle(isolate, new SkiaBenchmarking());
if (controller.IsEmpty())
return;
v8::Local<v8::Object> chrome = GetOrCreateChromeObject(isolate,
context->Global());
chrome->Set(gin::StringToV8(isolate, "skiaBenchmarking"), controller.ToV8());
}
// static
void SkiaBenchmarking::Initialize() {
DCHECK(RenderThreadImpl::current());
// FIXME: remove this after Skia updates SkGraphics::Init() to be
// thread-safe and idempotent.
static bool skia_initialized = false;
if (!skia_initialized) {
LOG(WARNING) << "Enabling unsafe Skia benchmarking extension.";
SkGraphics::Init();
skia_initialized = true;
}
}
SkiaBenchmarking::SkiaBenchmarking() {
Initialize();
}
SkiaBenchmarking::~SkiaBenchmarking() {}
gin::ObjectTemplateBuilder SkiaBenchmarking::GetObjectTemplateBuilder(
v8::Isolate* isolate) {
return gin::Wrappable<SkiaBenchmarking>::GetObjectTemplateBuilder(isolate)
.SetMethod("rasterize", &SkiaBenchmarking::Rasterize)
.SetMethod("getOps", &SkiaBenchmarking::GetOps)
.SetMethod("getOpTimings", &SkiaBenchmarking::GetOpTimings)
.SetMethod("getInfo", &SkiaBenchmarking::GetInfo);
}
void SkiaBenchmarking::Rasterize(gin::Arguments* args) {
v8::Isolate* isolate = args->isolate();
if (args->PeekNext().IsEmpty())
return;
v8::Local<v8::Value> picture_handle;
args->GetNext(&picture_handle);
std::unique_ptr<Picture> picture = ParsePictureHash(isolate, picture_handle);
if (!picture.get())
return;
double scale = 1.0;
gfx::Rect clip_rect(picture->layer_rect);
int stop_index = -1;
v8::Local<v8::Context> context = isolate->GetCurrentContext();
if (!args->PeekNext().IsEmpty()) {
v8::Local<v8::Value> params;
args->GetNext(&params);
std::unique_ptr<content::V8ValueConverter> converter(
content::V8ValueConverter::create());
std::unique_ptr<base::Value> params_value(
converter->FromV8Value(params, context));
const base::DictionaryValue* params_dict = NULL;
if (params_value.get() && params_value->GetAsDictionary(&params_dict)) {
params_dict->GetDouble("scale", &scale);
params_dict->GetInteger("stop", &stop_index);
const base::Value* clip_value = NULL;
if (params_dict->Get("clip", &clip_value))
cc::MathUtil::FromValue(clip_value, &clip_rect);
}
}
clip_rect.Intersect(picture->layer_rect);
gfx::Rect snapped_clip = gfx::ScaleToEnclosingRect(clip_rect, scale);
SkBitmap bitmap;
if (!bitmap.tryAllocN32Pixels(snapped_clip.width(), snapped_clip.height()))
return;
bitmap.eraseARGB(0, 0, 0, 0);
SkCanvas canvas(bitmap);
canvas.translate(SkIntToScalar(-clip_rect.x()),
SkIntToScalar(-clip_rect.y()));
canvas.clipRect(gfx::RectToSkRect(snapped_clip));
canvas.scale(scale, scale);
canvas.translate(picture->layer_rect.x(), picture->layer_rect.y());
skia::BenchmarkingCanvas benchmarking_canvas(&canvas);
size_t playback_count =
(stop_index < 0) ? std::numeric_limits<size_t>::max() : stop_index;
PicturePlaybackController controller(benchmarking_canvas, playback_count);
picture->picture->playback(&benchmarking_canvas, &controller);
blink::WebArrayBuffer buffer =
blink::WebArrayBuffer::Create(bitmap.getSize(), 1);
uint32_t* packed_pixels = reinterpret_cast<uint32_t*>(bitmap.getPixels());
uint8_t* buffer_pixels = reinterpret_cast<uint8_t*>(buffer.Data());
// Swizzle from native Skia format to RGBA as we copy out.
for (size_t i = 0; i < bitmap.getSize(); i += 4) {
uint32_t c = packed_pixels[i >> 2];
buffer_pixels[i] = SkGetPackedR32(c);
buffer_pixels[i + 1] = SkGetPackedG32(c);
buffer_pixels[i + 2] = SkGetPackedB32(c);
buffer_pixels[i + 3] = SkGetPackedA32(c);
}
args->Return(gin::DataObjectBuilder(isolate)
.Set("width", snapped_clip.width())
.Set("height", snapped_clip.height())
.Set("data", blink::WebArrayBufferConverter::ToV8Value(
&buffer, context->Global(), isolate))
.Build());
}
void SkiaBenchmarking::GetOps(gin::Arguments* args) {
v8::Isolate* isolate = args->isolate();
if (args->PeekNext().IsEmpty())
return;
v8::Local<v8::Value> picture_handle;
args->GetNext(&picture_handle);
std::unique_ptr<Picture> picture = ParsePictureHash(isolate, picture_handle);
if (!picture.get())
return;
SkCanvas canvas(picture->layer_rect.width(), picture->layer_rect.height());
skia::BenchmarkingCanvas benchmarking_canvas(&canvas);
picture->picture->playback(&benchmarking_canvas);
v8::Local<v8::Context> context = isolate->GetCurrentContext();
std::unique_ptr<content::V8ValueConverter> converter(
content::V8ValueConverter::create());
args->Return(converter->ToV8Value(&benchmarking_canvas.Commands(), context));
}
void SkiaBenchmarking::GetOpTimings(gin::Arguments* args) {
v8::Isolate* isolate = args->isolate();
if (args->PeekNext().IsEmpty())
return;
v8::Local<v8::Value> picture_handle;
args->GetNext(&picture_handle);
std::unique_ptr<Picture> picture = ParsePictureHash(isolate, picture_handle);
if (!picture.get())
return;
gfx::Rect bounds = picture->layer_rect;
// Measure the total time by drawing straight into a bitmap-backed canvas.
SkBitmap bitmap;
bitmap.allocN32Pixels(bounds.width(), bounds.height());
SkCanvas bitmap_canvas(bitmap);
bitmap_canvas.clear(SK_ColorTRANSPARENT);
base::TimeTicks t0 = base::TimeTicks::Now();
picture->picture->playback(&bitmap_canvas);
base::TimeDelta total_time = base::TimeTicks::Now() - t0;
// Gather per-op timing info by drawing into a BenchmarkingCanvas.
SkCanvas canvas(bitmap);
canvas.clear(SK_ColorTRANSPARENT);
skia::BenchmarkingCanvas benchmarking_canvas(&canvas);
picture->picture->playback(&benchmarking_canvas);
v8::Local<v8::Array> op_times =
v8::Array::New(isolate, benchmarking_canvas.CommandCount());
for (size_t i = 0; i < benchmarking_canvas.CommandCount(); ++i) {
op_times->Set(i, v8::Number::New(isolate, benchmarking_canvas.GetTime(i)));
}
v8::Local<v8::Object> result = v8::Object::New(isolate);
result->Set(v8::String::NewFromUtf8(isolate, "total_time"),
v8::Number::New(isolate, total_time.InMillisecondsF()));
result->Set(v8::String::NewFromUtf8(isolate, "cmd_times"), op_times);
args->Return(result);
}
void SkiaBenchmarking::GetInfo(gin::Arguments* args) {
v8::Isolate* isolate = args->isolate();
if (args->PeekNext().IsEmpty())
return;
v8::Local<v8::Value> picture_handle;
args->GetNext(&picture_handle);
std::unique_ptr<Picture> picture = ParsePictureStr(isolate, picture_handle);
if (!picture.get())
return;
v8::Local<v8::Object> result = v8::Object::New(isolate);
result->Set(v8::String::NewFromUtf8(isolate, "width"),
v8::Number::New(isolate, picture->layer_rect.width()));
result->Set(v8::String::NewFromUtf8(isolate, "height"),
v8::Number::New(isolate, picture->layer_rect.height()));
args->Return(result);
}
} // namespace content