1 /*
2  * Copyright (C) 2019 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #include <string>
18 #include <stddef.h>
19 #include <audio_utils/spdif/SPDIFEncoder.h>
20 #include <audio_utils/format.h>
21 #include <system/audio.h>
22 
23 namespace android {
24 
25   class MySPDIFEncoder : public SPDIFEncoder {
26   public:
27   explicit MySPDIFEncoder(audio_format_t format)
28     :  SPDIFEncoder(format) {
29   }
30 
31   ssize_t writeOutput(const void* buffer, size_t size) override {
32     if (buffer == nullptr) {
33       return 0;
34     }
35     return size;
36   }
37   };
38 
39 const static audio_format_t acs_formats[] = {AUDIO_FORMAT_AC3, AUDIO_FORMAT_E_AC3,
40 AUDIO_FORMAT_E_AC3_JOC};
41 const size_t formats_len = sizeof(acs_formats)/sizeof(audio_format_t);
42 
43 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
44   if (data == nullptr) {
45     return 0;
46   }
47   audio_format_t encoding = acs_formats[size % formats_len];
48   MySPDIFEncoder scanner(encoding);
49   scanner.isFormatSupported(encoding);
50   scanner.write(data, size); // parsing will be triggered based on sync keywords found in dict
51   scanner.reset();
52   return 0;
53 }
54 }
55