content/renderer/skia_benchmarking_extension.h

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_RENDERER_SKIA_BENCHMARKING_EXTENSION_H_
   6 #define CONTENT_RENDERER_SKIA_BENCHMARKING_EXTENSION_H_
   7
   8 #include "base/basictypes.h"
   9 #include "gin/wrappable.h"
  10
  11 namespace blink {
  12 class WebFrame;
  13 }
  14
  15 namespace gin {
  16 class Arguments;
  17 }
  18
  19 namespace content {
  20
  21 class SkiaBenchmarking : public gin::Wrappable<SkiaBenchmarking> {
  22  public:
  23   static gin::WrapperInfo kWrapperInfo;
  24   static void Install(blink::WebFrame* frame);
  25
  26   // Wrapper around SkGraphics::Init that can be invoked multiple times.
  27   static void Initialize();
  28
  29  private:
  30   SkiaBenchmarking();
  31   ~SkiaBenchmarking() override;
  32
  33   // gin::Wrappable.
  34   gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
  35       v8::Isolate* isolate) override;
  36
  37   // Rasterizes a Picture JSON-encoded by cc::Picture::AsValue().
  38   //
  39   // Takes a JSON-encoded cc::Picture and optionally rasterization parameters:
  40   //   {
  41   //     'scale':    {Number},
  42   //     'stop':     {Number},
  43   //     'overdraw': {Boolean},
  44   //     'clip':     [Number, Number, Number, Number]
  45   //   }
  46   //
  47   // Returns
  48   //  {
  49   //    'width':    {Number},
  50   //    'height':   {Number},
  51   //    'data':     {ArrayBuffer}
  52   //  }
  53   void Rasterize(gin::Arguments* args);
  54
  55   // Extracts the Skia draw commands from a JSON-encoded cc::Picture.
  56   //
  57   // Takes a JSON-encoded cc::Picture and returns
  58   // [{ 'cmd': {String}, 'info': [String, ...] }, ...]
  59   void GetOps(gin::Arguments* args);
  60
  61   // Returns timing information for the given picture.
  62   //
  63   // Takes a JSON-encoded cc::Picture and returns
  64   // { 'total_time': {Number}, 'cmd_times': [Number, ...] }
  65   void GetOpTimings(gin::Arguments* args);
  66
  67   // Returns meta information for the given picture.
  68   //
  69   // Takes a base64 encoded SKP and returns
  70   // { 'width': {Number}, 'height': {Number} }
  71   void GetInfo(gin::Arguments* args);
  72
  73   DISALLOW_COPY_AND_ASSIGN(SkiaBenchmarking);
  74 };
  75
  76 }  // namespace content
  77
  78 #endif // CONTENT_RENDERER_SKIA_BENCHMARKING_EXTENSION_H_