arduino-audio-tools
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The Arduino Stream supports operations on single characters. This is usually not the best way to push audio information, but we will support it anyway - by using a buffer. On reads: if the buffer is empty it gets refilled. More...
#include <AudioStreams.h>
Public Member Functions | |
BufferedStream (size_t buffer_size) | |
BufferedStream (size_t buffer_size, Print &out) | |
BufferedStream (size_t buffer_size, Stream &io) | |
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 | |
int | available () override |
Returns the available bytes in the buffer: to be avoided. | |
virtual int | availableForWrite () override |
virtual bool | begin () |
void | clear () |
Clears all the data in the buffer. | |
virtual void | clearNotifyAudioChange () |
Deletes all change notify subscriptions. | |
virtual void | end () |
void | flush () override |
empties the buffer | |
bool | isNotifyActive () |
Checks if the automatic AudioInfo update is active. | |
virtual | operator bool () |
int | peek () override |
peeks a byte - to be avoided | |
int | read () override |
reads a byte - to be avoided | |
size_t | readBytes (uint8_t *data, size_t len) override |
Use this method !! | |
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) | |
void | setOutput (Print &out) |
Defines/Changes the output target. | |
void | setStream (Print &out) |
void | setStream (Stream &io) |
Defines/Changes the input & output. | |
size_t | write (const uint8_t *data, size_t len) override |
Use this method: write an array. | |
size_t | write (uint8_t c) override |
writes a byte to the buffer | |
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) |
virtual size_t | readExt (uint8_t *data, size_t len) |
void | refill () |
void | refillReadBuffer () |
virtual size_t | writeExt (const uint8_t *data, size_t len) |
Protected Attributes | |
int | _timeout = 10 |
SingleBuffer< uint8_t > | buffer |
AudioInfo | info |
bool | is_notify_active = true |
Vector< AudioInfoSupport * > | notify_vector |
Stream * | p_in = nullptr |
Print * | p_out = nullptr |
RingBuffer< uint8_t > | tmp_in {0} |
RingBuffer< uint8_t > | tmp_out {0} |
The Arduino Stream supports operations on single characters. This is usually not the best way to push audio information, but we will support it anyway - by using a buffer. On reads: if the buffer is empty it gets refilled.
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inlinevirtualinherited |
Adds target to be notified about audio changes.
Reimplemented in CodecNOP, MP3DecoderMAD, EncodedAudioOutput, EncodedAudioStream, AACDecoderFDK, DecoderBasic, MP3DecoderHelix, OggContainerDecoder, Pipeline, and Pipeline::ModifyingStreamAdapter.
provides the actual input AudioInfo
Implements AudioInfoSupport.
Reimplemented in JupyterAudioT< T >, MozziStream, TimerCallbackAudioStream, PureDataStream, AdapterAudioOutputToAudioStream, GeneratedSoundStream< T >, and GeneratedSoundStream< int16_t >.
provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream
Reimplemented in PureDataStream, PWMAudioOutput, ChannelFormatConverterStreamT< T >, ChannelFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, NumberFormatConverterStream, FormatConverterStream, Pipeline, and ResampleStream.
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inlineoverridevirtual |
Returns the available bytes in the buffer: to be avoided.
Reimplemented from BaseStream.
Reimplemented from Print.
Reimplemented in UDPStream, A2DPStream, AudioFFTBase, I2SCodecStream, AbstractURLStream, URLStreamESP32, I2SStream, MeasuringStream, ProgressStream, and VolumeStream.
Reimplemented in AudioOutputWithCallback, HLSStream, SPDIFOutput, VS1053Stream, WM8960Stream, ESPNowStream, TimerCallbackAudioStream, QueueStream< T >, QueueStream< uint8_t >, DynamicMemoryStream, AudioFFTBase, AnalogAudioArduino, AnalogAudioStream, MemoryStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, FormatConverterStream, and Pipeline.
Reimplemented in FaustStream< DSP >, HLSStream, I2SCodecStream, VS1053Stream, WM8960Stream, ESPNowStream, I2SStream, TimerCallbackAudioStream, QueueStream< T >, QueueStream< uint8_t >, AudioFFTBase, AudioKitStream, AnalogAudioStream, HttpRequest, ICYStreamT< T >, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, InputMixer< T >, InputMerge< T >, and Pipeline.
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inlineoverridevirtual |
empties the buffer
Reimplemented from BaseStream.
Reimplemented in A2DPStream, Pipeline, I2SStream, and MemoryStream.
Use this method !!
Reimplemented from AudioStream.
Defines the input AudioInfo.
Implements AudioInfoSupport.
Reimplemented in VS1053Stream, WM8960Stream, I2SBitBang, ChannelFormatConverterStreamT< T >, ChannelFormatConverterStream, VolumeStream, MiniAudioStream, PortAudioStream, I2SCodecStream, MozziStream, SPDIFOutput, AudioLoRa, AnalogAudioStream, I2SStream, MeasuringStream, VolumeMeter, TimerCallbackAudioStream, AudioBLEStream, LoRaStream, AudioFFTBase, AudioKitStream, VBANStream, AnalogAudioArduino, Equalizer3Bands, AdapterAudioOutputToAudioStream, TimedStream, ProgressStream, FormatConverterStream, FadeStream, Pipeline::ModifyingStreamAdapter, PureDataStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, NumberFormatConverterStreamT< TFrom, TTo >, NumberFormatConverterStream, Pipeline, and ResampleStream.
Defines/Changes the output target.
Implements ModifyingStream.
Defines/Changes the input & output.
Implements ModifyingStream.
Use this method: write an array.
Reimplemented from AudioStream.
writes a byte to the buffer
Reimplemented from BaseStream.