Add nanobench tests for BitmapRegionDecoder
SkBitmapRegionDecoderInterface provides an interface
for multiple implementations of Android's
BitmapRegionDecoder.
We already have correctness tests in DM that will enable us
to compare the quality of our various BRD implementations.
We also need these performance tests to compare the speed
of our various implementations.
BUG=skia:4357
Review URL: https://codereview.chromium.org/1344993003
diff --git a/bench/BitmapRegionDecoderBench.h b/bench/BitmapRegionDecoderBench.h
new file mode 100644
index 0000000..7be770f
--- /dev/null
+++ b/bench/BitmapRegionDecoderBench.h
@@ -0,0 +1,49 @@
+/*
+ * 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 BitmapRegionDecoderBench_DEFINED
+#define BitmapRegionDecoderBench_DEFINED
+
+#include "Benchmark.h"
+#include "SkBitmapRegionDecoderInterface.h"
+#include "SkData.h"
+#include "SkImageInfo.h"
+#include "SkRefCnt.h"
+#include "SkString.h"
+
+/**
+ * Benchmark Android's BitmapRegionDecoder for a particular colorType, sampleSize, and subset.
+ *
+ * fStrategy determines which of various implementations is to be used.
+ *
+ * nanobench.cpp handles creating benchmarks for interesting scaled subsets. We strive to test
+ * on real use cases.
+ */
+class BitmapRegionDecoderBench : public Benchmark {
+public:
+ // Calls encoded->ref()
+ BitmapRegionDecoderBench(const char* basename, SkData* encoded,
+ SkBitmapRegionDecoderInterface::Strategy strategy, SkColorType colorType,
+ uint32_t sampleSize, const SkIRect& subset);
+
+protected:
+ const char* onGetName() override;
+ bool isSuitableFor(Backend backend) override;
+ void onDraw(const int n, SkCanvas* canvas) override;
+ void onPreDraw() override;
+
+private:
+ SkString fName;
+ SkAutoTDelete<SkBitmapRegionDecoderInterface> fBRD;
+ SkAutoTUnref<SkData> fData;
+ const SkBitmapRegionDecoderInterface::Strategy fStrategy;
+ const SkColorType fColorType;
+ const uint32_t fSampleSize;
+ const SkIRect fSubset;
+ typedef Benchmark INHERITED;
+};
+#endif // BitmapRegionDecoderBench_DEFINED