1 files changed, 156 insertions, 0 deletions
diff --git a/chromium/third_party/skia/tools/bench_playback.cpp b/chromium/third_party/skia/tools/bench_playback.cpp
new file mode 100644
index 00000000000..26fa1c7ee8d
--- /dev/null
+++ b/chromium/third_party/skia/tools/bench_playback.cpp
@@ -0,0 +1,156 @@
+/*
+ * Copyright 2014 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkCommandLineFlags.h"
+#include "SkForceLinking.h"
+#include "SkGraphics.h"
+#include "SkOSFile.h"
+#include "SkPicture.h"
+#include "SkPictureRecorder.h"
+#include "SkStream.h"
+#include "SkString.h"
+
+#include "../include/record/SkRecording.h"
+
+#include "BenchTimer.h"
+#include "Stats.h"
+
+typedef WallTimer Timer;
+
+__SK_FORCE_IMAGE_DECODER_LINKING;
+
+DEFINE_string2(skps, r, "skps", "Directory containing SKPs to playback.");
+DEFINE_int32(samples, 10, "Gather this many samples of each picture playback.");
+DEFINE_bool(skr, false, "Play via SkRecord instead of SkPicture.");
+DEFINE_int32(tile, 1000000000, "Simulated tile size.");
+DEFINE_string(match, "", "The usual filters on file names of SKPs to bench.");
+DEFINE_string(timescale, "ms", "Print times in ms, us, or ns");
+DEFINE_int32(verbose, 0, "0: print min sample; "
+                         "1: print min, mean, max and noise indication "
+                         "2: print all samples");
+
+static double timescale() {
+    if (FLAGS_timescale.contains("us")) return 1000;
+    if (FLAGS_timescale.contains("ns")) return 1000000;
+    return 1;
+}
+
+static SkPicture* rerecord_with_tilegrid(SkPicture& src) {
+    SkTileGridFactory::TileGridInfo info;
+    info.fTileInterval.set(FLAGS_tile, FLAGS_tile);
+    info.fMargin.setEmpty();
+    info.fOffset.setZero();
+    SkTileGridFactory factory(info);
+
+    SkPictureRecorder recorder;
+    src.draw(recorder.beginRecording(src.width(), src.height(), &factory));
+    return recorder.endRecording();
+}
+
+static EXPERIMENTAL::SkPlayback* rerecord_with_skr(SkPicture& src) {
+    EXPERIMENTAL::SkRecording recording(src.width(), src.height());
+    src.draw(recording.canvas());
+    return recording.releasePlayback();
+}
+
+static void draw(const EXPERIMENTAL::SkPlayback& skr, const SkPicture& skp, SkCanvas* canvas) {
+    if (FLAGS_skr) {
+        skr.draw(canvas);
+    } else {
+        skp.draw(canvas);
+    }
+}
+
+static void bench(SkPMColor* scratch, SkPicture& src, const char* name) {
+    SkAutoTUnref<SkPicture> picture(rerecord_with_tilegrid(src));
+    SkAutoTDelete<EXPERIMENTAL::SkPlayback> record(rerecord_with_skr(src));
+
+    SkAutoTDelete<SkCanvas> canvas(SkCanvas::NewRasterDirectN32(src.width(),
+                                                                src.height(),
+                                                                scratch,
+                                                                src.width() * sizeof(SkPMColor)));
+    canvas->clipRect(SkRect::MakeWH(SkIntToScalar(FLAGS_tile), SkIntToScalar(FLAGS_tile)));
+
+    // Draw once to warm any caches.  The first sample otherwise can be very noisy.
+    draw(*record, *picture, canvas.get());
+
+    Timer timer;
+    SkAutoTMalloc<double> samples(FLAGS_samples);
+    for (int i = 0; i < FLAGS_samples; i++) {
+        // We assume timer overhead (typically, ~30ns) is insignificant
+        // compared to draw runtime (at least ~100us, usually several ms).
+        timer.start(timescale());
+        draw(*record, *picture, canvas.get());
+        timer.end();
+        samples[i] = timer.fWall;
+    }
+
+    Stats stats(samples.get(), FLAGS_samples);
+    if (FLAGS_verbose == 0) {
+        printf("%g\t%s\n", stats.min, name);
+    } else if (FLAGS_verbose == 1) {
+        // Get a rough idea of how noisy the measurements were.
+        const double noisePercent = 100 * sqrt(stats.var) / stats.mean;
+        printf("%g\t%g\t%g\t±%.0f%%\t%s\n", stats.min, stats.mean, stats.max, noisePercent, name);
+    } else if (FLAGS_verbose == 2) {
+        printf("%s", name);
+        for (int i = 0; i < FLAGS_samples; i++) {
+            printf("\t%g", samples[i]);
+        }
+        printf("\n");
+    }
+}
+
+int tool_main(int argc, char** argv);
+int tool_main(int argc, char** argv) {
+    SkCommandLineFlags::Parse(argc, argv);
+    SkAutoGraphics autoGraphics;
+
+    // We share a single scratch bitmap among benches to reduce the profile noise from allocation.
+    static const int kMaxArea = 209825221;  // tabl_mozilla is this big.
+    SkAutoTMalloc<SkPMColor> scratch(kMaxArea);
+
+    SkOSFile::Iter it(FLAGS_skps[0], ".skp");
+    SkString filename;
+    bool failed = false;
+    while (it.next(&filename)) {
+        if (SkCommandLineFlags::ShouldSkip(FLAGS_match, filename.c_str())) {
+            continue;
+        }
+
+        const SkString path = SkOSPath::SkPathJoin(FLAGS_skps[0], filename.c_str());
+
+        SkAutoTUnref<SkStream> stream(SkStream::NewFromFile(path.c_str()));
+        if (!stream) {
+            SkDebugf("Could not read %s.\n", path.c_str());
+            failed = true;
+            continue;
+        }
+        SkAutoTUnref<SkPicture> src(SkPicture::CreateFromStream(stream));
+        if (!src) {
+            SkDebugf("Could not read %s as an SkPicture.\n", path.c_str());
+            failed = true;
+            continue;
+        }
+
+        if (src->width() * src->height() > kMaxArea) {
+            SkDebugf("%s (%dx%d) is larger than hardcoded scratch bitmap (%dpx).\n",
+                     path.c_str(), src->width(), src->height(), kMaxArea);
+            failed = true;
+            continue;
+        }
+
+        bench(scratch.get(), *src, filename.c_str());
+    }
+    return failed ? 1 : 0;
+}
+
+#if !defined SK_BUILD_FOR_IOS
+int main(int argc, char * const argv[]) {
+    return tool_main(argc, (char**) argv);
+}
+#endif