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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include <stddef.h> |
| 6 |
| 7 #include "base/numerics/safe_conversions.h" |
| 8 #include "media/filters/h264_parser.h" |
| 9 |
| 10 // Entry point for LibFuzzer. |
| 11 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) { |
| 12 if (!size) |
| 13 return 0; |
| 14 |
| 15 media::H264Parser parser; |
| 16 parser.SetStream(data, base::checked_cast<off_t>(size)); |
| 17 |
| 18 // Parse until the end of stream/unsupported stream/error in stream is |
| 19 // found. |
| 20 while (true) { |
| 21 media::H264NALU nalu; |
| 22 media::H264Parser::Result res = parser.AdvanceToNextNALU(&nalu); |
| 23 if (res != media::H264Parser::kOk) |
| 24 break; |
| 25 |
| 26 switch (nalu.nal_unit_type) { |
| 27 case media::H264NALU::kIDRSlice: |
| 28 case media::H264NALU::kNonIDRSlice: { |
| 29 media::H264SliceHeader shdr; |
| 30 res = parser.ParseSliceHeader(nalu, &shdr); |
| 31 break; |
| 32 } |
| 33 |
| 34 case media::H264NALU::kSPS: { |
| 35 int id; |
| 36 res = parser.ParseSPS(&id); |
| 37 break; |
| 38 } |
| 39 |
| 40 case media::H264NALU::kPPS: { |
| 41 int id; |
| 42 res = parser.ParsePPS(&id); |
| 43 break; |
| 44 } |
| 45 |
| 46 case media::H264NALU::kSEIMessage: { |
| 47 media::H264SEIMessage sei_msg; |
| 48 res = parser.ParseSEI(&sei_msg); |
| 49 break; |
| 50 } |
| 51 |
| 52 default: |
| 53 // Skip any other NALU. |
| 54 break; |
| 55 } |
| 56 if (res != media::H264Parser::kOk) |
| 57 break; |
| 58 } |
| 59 |
| 60 return 0; |
| 61 } |
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