arduino-audio-tools
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Pitch Shift: Shifts the frequency up or down w/o impacting the length! We reduce the channels to 1 to calculate the pitch shift and provides the pitch shifted result in the correct number of channels. The pitch shifting is done with the help of a buffer that can have potentially multiple implementations. More...
#include <PitchShift.h>
Public Member Functions | |
PitchShiftOutput (Print &out) | |
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 | availableForWrite () override |
virtual bool | begin () |
virtual bool | begin (AudioInfo info) |
bool | begin (PitchShiftInfo info) |
virtual void | clearNotifyAudioChange () |
Deletes all change notify subscriptions. | |
PitchShiftInfo | defaultConfig () |
void | end () |
virtual void | flush () |
virtual bool | isDeletable () |
If true we need to release the related memory in the destructor. | |
bool | isNotifyActive () |
Checks if the automatic AudioInfo update is active. | |
virtual | operator bool () |
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) | |
size_t | write (const uint8_t *data, size_t len) override |
virtual size_t | write (uint8_t ch) override |
virtual void | writeSilence (size_t len) |
Protected Member Functions | |
void | notifyAudioChange (AudioInfo info) |
T | pitchShift (T value) |
Protected Attributes | |
int | _timeout = 10 |
bool | active |
BufferT | buffer |
PitchShiftInfo | cfg |
bool | is_active = false |
bool | is_notify_active = true |
Vector< AudioInfoSupport * > | notify_vector |
Print * | p_out = nullptr |
SingleBuffer< uint8_t > | tmp {MAX_SINGLE_CHARS} |
int | tmpPos = 0 |
Pitch Shift: Shifts the frequency up or down w/o impacting the length! We reduce the channels to 1 to calculate the pitch shift and provides the pitch shifted result in the correct number of channels. The pitch shifting is done with the help of a buffer that can have potentially multiple implementations.
T | |
BufferT |
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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 AdapterPrintToAudioOutput, and AdapterAudioStreamToAudioOutput.
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.
Reimplemented from Print.
Reimplemented in RTSPOutput, and AudioFFTBase.
Reimplemented in AudioOutputWithCallback, EncodedAudioOutput, OggContainerOutput, AudioFFTBase, MetaDataFilter, and CsvOutput< T >.
Reimplemented in AudioESP32ULP, CsvOutput< T >, and EncodedAudioOutput.
If true we need to release the related memory in the destructor.
Reimplemented in AdapterPrintToAudioOutput, and AdapterAudioStreamToAudioOutput.
Reimplemented in EncodedAudioOutput, and RTSPOutput.
Defines the input AudioInfo.
Implements AudioInfoSupport.
Reimplemented in ChannelsSelectOutput, AdapterPrintToAudioOutput, MultiOutput, AudioFFTBase, AdapterAudioStreamToAudioOutput, CsvOutput< T >, PWMAudioOutput, and EncodedAudioOutput.
Implements AudioOutput.
Reimplemented in OversamplingDAC.
Writes n 0 values (= silence)
len |