| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Data.ByteString.Mp4.AudioStreaming
Description
A single-track AAC audio streaming utility wrapping AudioFile for
streaming via e.g. DASH.
Synopsis
- data Segment = Segment {
- segmentSequence :: !Word32
- segmentTime :: !Word64
- segmentData :: !ByteString
- data StreamingContext
- data AacMp4TrackFragment = AacMp4TrackFragment {}
- numberOfChannels :: Num a => StreamingContext -> a
- buildAacMp4TrackFragment :: AacMp4TrackFragment -> Builder
- getStreamConfig :: StreamingContext -> AacInitSegment
- getStreamBaseTime :: StreamingContext -> Word64
- getStreamSequence :: StreamingContext -> Word32
- addToBaseTime :: StreamingContext -> NominalDiffTime -> StreamingContext
- getSegmentDuration :: StreamingContext -> NominalDiffTime
- streamInitINTERNAL_TESTING :: String -> NominalDiffTime -> Bool -> SamplingFreqTable -> ChannelConfigTable -> IO (BinaryAacInitSegment, StreamingContext)
- streamInitUtc :: String -> UTCTime -> UTCTime -> NominalDiffTime -> Bool -> SamplingFreqTable -> ChannelConfigTable -> (BinaryAacInitSegment, StreamingContext)
- streamNextSample :: Word32 -> ByteString -> StreamingContext -> (Maybe Segment, StreamingContext)
- streamFlush :: StreamingContext -> (Maybe Segment, StreamingContext)
- module Data.ByteString.Mp4.AacInitSegment
- module Data.ByteString.Mp4.Boxes.Mp4AudioSampleEntry
- module Data.ByteString.Mp4.Boxes.AudioSpecificConfig
- module Data.ByteString.IsoBaseFileFormat.Util.Time
- module Data.ByteString.IsoBaseFileFormat.Util.BoxFields
- module Data.ByteString.IsoBaseFileFormat.ReExports
- module Data.ByteString.IsoBaseFileFormat.MediaFile
- module Data.ByteString.IsoBaseFileFormat.Brands.Dash
Documentation
Contains a sample in the ISO14496 style interpretation, i.e. a smallish buffer of e.g. 20ms audio data or a single video frame. A sample has some kind of time or at least order associated to it. TODO not right now, add it
Also a sample has a duration measured as the sampleCount. TODO make this a real data type, and possible refactor this to be a seperate issue from filling stream gaps and determining the offsets and the decoding time stamp.
Constructors
| Segment | |
Fields
| |
data StreamingContext Source #
Contains the configuration and state for the creation of a DASH audio stream.
data AacMp4TrackFragment Source #
Media fragment segment parameters of an aac audio stream mp4 file.
Constructors
| AacMp4TrackFragment | |
Fields
| |
numberOfChannels :: Num a => StreamingContext -> a Source #
buildAacMp4TrackFragment :: AacMp4TrackFragment -> Builder Source #
Convert a 'AacMp4TrackFragment record to a generic Boxes collection.
getStreamConfig :: StreamingContext -> AacInitSegment Source #
Return the AacInitSegment from an StreamingContext
getStreamBaseTime :: StreamingContext -> Word64 Source #
Return the current base decoding time
getStreamSequence :: StreamingContext -> Word32 Source #
Return the current sequence number
streamInitINTERNAL_TESTING :: String -> NominalDiffTime -> Bool -> SamplingFreqTable -> ChannelConfigTable -> IO (BinaryAacInitSegment, StreamingContext) Source #
Initiate the StreamingContext and create the MP4 init segment.
This lives in IO because it read the current time from the real world.
streamInitUtc :: String -> UTCTime -> UTCTime -> NominalDiffTime -> Bool -> SamplingFreqTable -> ChannelConfigTable -> (BinaryAacInitSegment, StreamingContext) Source #
Initiate the StreamingContext and create the MP4 init segment.
This lives in IO because it read the current time from the real world.
streamNextSample :: Word32 -> ByteString -> StreamingContext -> (Maybe Segment, StreamingContext) Source #
Enqueue a sample, if enough samples are accumulated, generate the next segment
streamFlush :: StreamingContext -> (Maybe Segment, StreamingContext) Source #
Enqueue a sample, if enough samples are accumulated, generate the next segment