Add benchmarkstream to visualbench

tools/VisualBench/VisualBenchmarkStream.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 <VisualBench/VisualBenchmarkStream.h>
+#include "GMBench.h"
+#include "SkOSFile.h"
+#include "SkPictureRecorder.h"
+#include "SkStream.h"
+#include "VisualSKPBench.h"
+
+DEFINE_string2(match, m, NULL,
+               "[~][^]substring[$] [...] of bench name to run.\n"
+               "Multiple matches may be separated by spaces.\n"
+               "~ causes a matching bench to always be skipped\n"
+               "^ requires the start of the bench to match\n"
+               "$ requires the end of the bench to match\n"
+               "^ and $ requires an exact match\n"
+               "If a bench does not match any list entry,\n"
+               "it is skipped unless some list entry starts with ~");
+DEFINE_string(skps, "skps", "Directory to read skps from.");
+
+VisualBenchmarkStream::VisualBenchmarkStream()
+    : fBenches(BenchRegistry::Head())
+    , fGMs(skiagm::GMRegistry::Head())
+    , fSourceType(NULL)
+    , fBenchType(NULL)
+    , fCurrentSKP(0) {
+    for (int i = 0; i < FLAGS_skps.count(); i++) {
+        if (SkStrEndsWith(FLAGS_skps[i], ".skp")) {
+            fSKPs.push_back() = FLAGS_skps[i];
+        } else {
+            SkOSFile::Iter it(FLAGS_skps[i], ".skp");
+            SkString path;
+            while (it.next(&path)) {
+                fSKPs.push_back() = SkOSPath::Join(FLAGS_skps[0], path.c_str());
+            }
+        }
+    }
+}
+
+bool VisualBenchmarkStream::ReadPicture(const char* path, SkAutoTUnref<SkPicture>* pic) {
+    // Not strictly necessary, as it will be checked again later,
+    // but helps to avoid a lot of pointless work if we're going to skip it.
+    if (SkCommandLineFlags::ShouldSkip(FLAGS_match, path)) {
+        return false;
+    }
+
+    SkAutoTDelete<SkStream> stream(SkStream::NewFromFile(path));
+    if (stream.get() == NULL) {
+        SkDebugf("Could not read %s.\n", path);
+        return false;
+    }
+
+    pic->reset(SkPicture::CreateFromStream(stream.get()));
+    if (pic->get() == NULL) {
+        SkDebugf("Could not read %s as an SkPicture.\n", path);
+        return false;
+    }
+    return true;
+}
+
+Benchmark* VisualBenchmarkStream::next() {
+    while (fBenches) {
+        Benchmark* bench = fBenches->factory()(NULL);
+        fBenches = fBenches->next();
+        if (bench->isVisual()) {
+            fSourceType = "bench";
+            fBenchType  = "micro";
+            return bench;
+        }
+    }
+
+    while (fGMs) {
+        SkAutoTDelete<skiagm::GM> gm(fGMs->factory()(NULL));
+        fGMs = fGMs->next();
+        if (gm->runAsBench()) {
+            fSourceType = "gm";
+            fBenchType  = "micro";
+            return SkNEW_ARGS(GMBench, (gm.detach()));
+        }
+    }
+
+    // Render skps
+    while (fCurrentSKP < fSKPs.count()) {
+        const SkString& path = fSKPs[fCurrentSKP++];
+        SkAutoTUnref<SkPicture> pic;
+        if (!ReadPicture(path.c_str(), &pic)) {
+            continue;
+        }
+
+        SkString name = SkOSPath::Basename(path.c_str());
+        fSourceType = "skp";
+        fBenchType = "playback";
+        return SkNEW_ARGS(VisualSKPBench, (name.c_str(), pic.get()));
+    }
+
+    return NULL;
+}