android13/frameworks/av/media/libmediaplayerservice/fuzzer/README.md

Fuzzer for libmediaplayerservice

Table of contents

• StagefrightMediaRecorder
• StagefrightMetadataRetriever
• MediaPlayer

Fuzzer for StagefrightMediaRecorder

StagefrightMediaRecorder supports the following parameters:

1. Output Formats (parameter name: setOutputFormat)
2. Audio Encoders (parameter name: setAudioEncoder)
3. Video Encoders (parameter name: setVideoEncoder)
4. Audio Sources (parameter name: setAudioSource)
5. Video Sources (parameter name: setVideoSource)
6. Microphone Direction (parameter name: setMicrophoneDirection)

You can find the possible values in the fuzzer's source code.

Steps to run

1. Build the fuzzer

  $ mm -j$(nproc) mediarecorder_fuzzer

2. Run on device

  $ adb sync data
  $ adb shell /data/fuzz/arm64/mediarecorder_fuzzer/mediarecorder_fuzzer

Fuzzer for StagefrightMetadataRetriever

StagefrightMetadataRetriever supports the following data sources:

1. Url (parameter name: url)
2. File descriptor (parameter name: fd)
3. DataSource (parameter name: source)

Parameter	Valid Values	Configured Value
url	Url of data source	Value obtained from FuzzedDataProvider
fd	File descriptor value of input file	Value obtained from FuzzedDataProvider
source	DataSource object	Data obtained from FuzzedDataProvider

Steps to run

1. Build the fuzzer

  $ mm -j$(nproc) metadataretriever_fuzzer

2. To run on device

  $ adb sync data
  $ adb shell /data/fuzz/arm64/metadataretriever_fuzzer/metadataretriever_fuzzer

Fuzzer for MediaPlayer

MediaPlayerService supports the following data sources:

1. Url (parameter name: url)
2. File descriptor (parameter name: fd)
3. IStreamSource (parameter name: source)
4. IDataSource (parameter name: source)
5. RTP Parameters (parameter name: rtpParams)

MediaPlayerService supports the following parameters:

1. Audio sessions (parameter name: audioSessionId)
2. Audio stretch modes (parameter name: mStretchMode)
3. Audio fallback modes (parameter name: mFallbackMode)
4. Media parameter keys (parameter name: key)
5. Audio Stream Types (parameter name: streamType)
6. Media Event Types (parameter name: msg)
7. Media Info Types (parameter name: ext1)

You can find the possible values in the fuzzer's source code.

Steps to run

1. Build the fuzzer

  $ mm -j$(nproc) mediaplayer_fuzzer

2. To run on device

  $ adb sync data
  $ adb shell /data/fuzz/arm64/mediaplayer_fuzzer/mediaplayer_fuzzer