Sniffer

Artifact: androidx.media3:media3-extractor

View Source

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Kotlin |Java

@UnstableApi
class Sniffer

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Provides methods that peek data from an ExtractorInput and return whether the input appears to be in MP4 format.

Summary

Constants
const Int	BRAND_HEIC = 1751476579 Brand stored in the ftyp atom for HEIC media.
const Int	BRAND_QUICKTIME = 1903435808 Brand stored in the ftyp atom for QuickTime media.

Public functions
java-static SniffFailure?	sniffFragmented(input: ExtractorInput!) Returns null if data peeked from the current position in input is consistent with the input being a fragmented MP4 file, otherwise returns a SniffFailure describing the first detected inconsistency..
java-static SniffFailure?	sniffUnfragmented(input: ExtractorInput!, acceptHeic: Boolean) Returns null if data peeked from the current position in input is consistent with the input being an unfragmented MP4 file, otherwise returns a SniffFailure describing the first detected inconsistency.

Constants

BRAND_HEIC

const val BRAND_HEIC = 1751476579: Int

Brand stored in the ftyp atom for HEIC media.

BRAND_QUICKTIME

const val BRAND_QUICKTIME = 1903435808: Int

Brand stored in the ftyp atom for QuickTime media.

Public functions

sniffFragmented

java-static fun sniffFragmented(input: ExtractorInput!): SniffFailure?

Returns null if data peeked from the current position in input is consistent with the input being a fragmented MP4 file, otherwise returns a SniffFailure describing the first detected inconsistency..

Parameters
input: ExtractorInput!	The extractor input from which to peek data. The peek position will be modified.

Returns
SniffFailure?	null if the input appears to be in the fragmented MP4 format, otherwise a SniffFailure describing why the input isn't deemed to be a fragmented MP4.

Throws
java.io.IOException	If an error occurs reading from the input.

sniffUnfragmented

java-static fun sniffUnfragmented(input: ExtractorInput!, acceptHeic: Boolean): SniffFailure?

Returns null if data peeked from the current position in input is consistent with the input being an unfragmented MP4 file, otherwise returns a SniffFailure describing the first detected inconsistency.

Parameters
input: ExtractorInput!	The extractor input from which to peek data. The peek position will be modified.
acceptHeic: Boolean	Whether null should be returned for HEIC photos.

Returns
SniffFailure?	null if the input appears to be in the fragmented MP4 format, otherwise a SniffFailure describing why the input isn't deemed to be a fragmented MP4.

Throws
java.io.IOException	If an error occurs reading from the input.