mirror of https://github.com/google/oss-fuzz.git
35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
// Copyright 2018 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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////////////////////////////////////////////////////////////////////////////////
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#include <stdint.h>
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#include <stdlib.h>
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// Arbitrary limits to prevent OOM, timeout, or slow execution.
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//
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// The decoded image size, and for animations additionally the canvas size.
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static const size_t kFuzzPxLimit = 1024 * 1024;
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// Demuxed or decoded animation frames.
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static const int kFuzzFrameLimit = 3;
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// Reads and sums (up to) 128 spread-out bytes.
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uint8_t FuzzHash(const uint8_t* const data, size_t size) {
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uint8_t value = 0;
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size_t incr = size / 128;
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if (!incr) incr = 1;
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for (size_t i = 0; i < size; i += incr) value += data[i];
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return value;
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}
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