Android HWUI backend Nanobench

bench/nanobench.h

+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef nanobench_DEFINED
+#define nanobench_DEFINED
+
+#include "Benchmark.h"
+#include "SkImageInfo.h"
+#include "SkSurface.h"
+#include "SkTypes.h"
+
+#if SK_SUPPORT_GPU
+#include "GrContextFactory.h"
+#endif
+
+class ResultsWriter;
+class SkBitmap;
+class SkCanvas;
+
+struct Config {
+    const char* name;
+    Benchmark::Backend backend;
+    SkColorType color;
+    SkAlphaType alpha;
+    int samples;
+#if SK_SUPPORT_GPU
+    GrContextFactory::GLContextType ctxType;
+    bool useDFText;
+#else
+    int bogusInt;
+    bool bogusBool;
+#endif
+};
+
+struct Target {
+    explicit Target(const Config& c) : config(c) { }
+    virtual ~Target() { }
+
+    const Config config;
+    SkAutoTDelete<SkSurface> surface;
+
+    /** Called once per target, immediately before any timing or drawing. */
+    virtual void setup() { }
+
+    /** Called *after* the clock timer is started, before the benchmark
+        is drawn.  */
+    virtual SkCanvas* beginTiming(SkCanvas* canvas) { return canvas; }
+
+    /** Called *after* a benchmark is drawn, but before the clock timer
+        is stopped.  */
+    virtual void endTiming() { }
+
+    /** Called between benchmarks (or between calibration and measured
+        runs) to make sure all pending work in drivers / threads is
+        complete. */
+    virtual void fence() { }
+
+    /** CPU-like targets can just be timed, but GPU-like
+        targets need to pay attention to frame boundaries
+        or other similar details. */
+    virtual bool needsFrameTiming() const { return false; }
+
+    /** Called once per target, during program initialization.
+        Returns false if initialization fails. */
+    virtual bool init(SkImageInfo info, Benchmark* bench);
+
+    /** Stores any pixels drawn to the screen in the bitmap.
+        Returns false on error. */
+    virtual bool capturePixels(SkBitmap* bmp);
+
+    /** Writes any config-specific data to the log. */
+    virtual void fillOptions(ResultsWriter*) { }
+};
+
+#endif  // nanobench_DEFINED