71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
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// Copyright 2016 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "testing/libfuzzer/fuzzers/skia_path_common.h"
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#include "third_party/skia/include/core/SkPath.h"
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// This is needed because SkPath::readFromMemory does not seem to be able to
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// be able to handle arbitrary input.
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void BuildPath(const uint8_t** data,
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size_t* size,
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SkPath* path,
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int last_verb) {
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uint8_t operation;
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SkScalar a, b, c, d, e, f;
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while (read<uint8_t>(data, size, &operation)) {
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switch (operation % (last_verb + 1)) {
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case SkPath::Verb::kMove_Verb:
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if (!read<SkScalar>(data, size, &a) || !read<SkScalar>(data, size, &b))
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return;
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path->moveTo(a, b);
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break;
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case SkPath::Verb::kLine_Verb:
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if (!read<SkScalar>(data, size, &a) || !read<SkScalar>(data, size, &b))
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return;
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path->lineTo(a, b);
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break;
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case SkPath::Verb::kQuad_Verb:
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if (!read<SkScalar>(data, size, &a) ||
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!read<SkScalar>(data, size, &b) ||
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!read<SkScalar>(data, size, &c) ||
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!read<SkScalar>(data, size, &d))
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return;
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path->quadTo(a, b, c, d);
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break;
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case SkPath::Verb::kConic_Verb:
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if (!read<SkScalar>(data, size, &a) ||
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!read<SkScalar>(data, size, &b) ||
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!read<SkScalar>(data, size, &c) ||
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!read<SkScalar>(data, size, &d) ||
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!read<SkScalar>(data, size, &e))
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return;
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path->conicTo(a, b, c, d, e);
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break;
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case SkPath::Verb::kCubic_Verb:
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if (!read<SkScalar>(data, size, &a) ||
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!read<SkScalar>(data, size, &b) ||
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!read<SkScalar>(data, size, &c) ||
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!read<SkScalar>(data, size, &d) ||
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!read<SkScalar>(data, size, &e) ||
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!read<SkScalar>(data, size, &f))
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return;
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path->cubicTo(a, b, c, d, e, f);
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break;
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case SkPath::Verb::kClose_Verb:
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path->close();
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break;
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case SkPath::Verb::kDone_Verb:
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// In this case, simply exit.
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return;
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}
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}
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}
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