Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
AudioStream Class Reference

Base class for all Audio Streams. It support the boolean operator to test if the object is ready with data. More...

#include <AudioStreams.h>

Inheritance diagram for AudioStream:
Stream AudioInfoSupport AudioInfoSource Print FileLoopT< File > GeneratedSoundStream< int16_t > QueueStream< uint8_t > A2DPStream AbstractURLStream AdapterAudioOutputToAudioStream AnalogAudioStream AnalogDriverESP32V1::IO16Bit AudioKitStream AudioMP34DT05 AudioStreamWrapper AudioSyncReader BufferedTaskStream CatStream DynamicMemoryStream ESP3288AudioOutput ESPNowStream FaustStream< DSP > FileLoopT< FileType > GeneratedSoundStream< T > HLSStream I2SCodecStream I2SStream InputMerge< T > InputMixer< T > JupyterAudioT< T > MemoryStream MiniAudioStream ModifyingStream MozziStream NullStream Pipeline PortAudioStream PureDataStream QueueStream< T > RingBufferStream SPDIFOutput StdioStream TfLiteAudioStreamBase VBANStream VS1053Stream WM8960Stream

Public Member Functions

 AudioStream (AudioStream const &)=delete
virtual void addNotifyAudioChange (AudioInfoSupport &bi)
 Adds target to be notified about audio changes.
virtual AudioInfo audioInfo () override
 provides the actual input AudioInfo
virtual AudioInfo audioInfoOut ()
 provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream
virtual int available () override
virtual int availableForWrite () override
virtual bool begin ()
virtual void clearNotifyAudioChange ()
 Deletes all change notify subscriptions.
virtual void end ()
virtual void flush () override
bool isNotifyActive ()
 Checks if the automatic AudioInfo update is active.
 operator bool ()
AudioStreamoperator= (AudioStream const &)=delete
virtual size_t readBytes (uint8_t *buffer, size_t length)
virtual size_t readSilence (uint8_t *buffer, size_t length)
 Source to generate silence: just sets the buffer to 0.
virtual bool removeNotifyAudioChange (AudioInfoSupport &bi)
 Removes a target in order not to be notified about audio changes.
virtual void setAudioInfo (AudioInfo newInfo) override
 Defines the input AudioInfo.
void setNotifyActive (bool flag)
 Deactivate/Reactivate automatic AudioInfo updates: (default is active)
virtual size_t write (const uint8_t *buffer, size_t size) override
virtual size_t write (uint8_t ch) override
virtual void writeSilence (size_t len)
 Writes len bytes of silence (=0).

Protected Member Functions

virtual int not_supported (int out, const char *msg="")
void notifyAudioChange (AudioInfo info)
void refillReadBuffer ()

Protected Attributes

int _timeout = 10
AudioInfo info
bool is_notify_active = true
Vector< AudioInfoSupport * > notify_vector
RingBuffer< uint8_t > tmp_in {0}
RingBuffer< uint8_t > tmp_out {0}

Detailed Description

Base class for all Audio Streams. It support the boolean operator to test if the object is ready with data.

Phil Schatzmann

The documentation for this class was generated from the following file: