Create VisualStreamTimingModule

tools/VisualBench/VisualStreamTimingModule.cpp

+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "VisualStreamTimingModule.h"
+
+#include "SkCanvas.h"
+
+VisualStreamTimingModule::VisualStreamTimingModule(VisualBench* owner, bool preWarmBeforeSample)
+    : fReinitializeBenchmark(false)
+    , fPreWarmBeforeSample(preWarmBeforeSample)
+    , fOwner(owner) {
+    fBenchmarkStream.reset(new VisualBenchmarkStream);
+}
+
+bool VisualStreamTimingModule::nextBenchmarkIfNecessary(SkCanvas* canvas) {
+    if (fBenchmark) {
+        return true;
+    }
+
+    fBenchmark.reset(fBenchmarkStream->next());
+    if (!fBenchmark) {
+        return false;
+    }
+
+    fOwner->clear(canvas, SK_ColorWHITE, 2);
+
+    fBenchmark->delayedSetup();
+    fBenchmark->preTimingHooks(canvas);
+    return true;
+}
+
+void VisualStreamTimingModule::draw(SkCanvas* canvas) {
+    if (!this->nextBenchmarkIfNecessary(canvas)) {
+        SkDebugf("Exiting VisualBench successfully\n");
+        fOwner->closeWindow();
+        return;
+    }
+
+    if (fReinitializeBenchmark) {
+        fReinitializeBenchmark = false;
+        fBenchmark->preTimingHooks(canvas);
+    }
+
+    this->renderFrame(canvas, fBenchmark, fTSM.loops());
+    fOwner->present();
+    TimingStateMachine::ParentEvents event = fTSM.nextFrame(fPreWarmBeforeSample);
+    switch (event) {
+        case TimingStateMachine::kReset_ParentEvents:
+            fBenchmark->postTimingHooks(canvas);
+            fOwner->reset();
+            fReinitializeBenchmark = true;
+            break;
+        case TimingStateMachine::kTiming_ParentEvents:
+            break;
+        case TimingStateMachine::kTimingFinished_ParentEvents:
+            fBenchmark->postTimingHooks(canvas);
+            fOwner->reset();
+            if (this->timingFinished(fBenchmark, fTSM.loops(), fTSM.lastMeasurement())) {
+                fTSM.nextBenchmark(canvas, fBenchmark);
+                fBenchmark.reset(nullptr);
+            } else {
+                fReinitializeBenchmark = true;
+            }
+            break;
+    }
+}