arduino-audio-tools
Public Member Functions | Public Attributes | Protected Member Functions | Protected Attributes | List of all members
AACDecoderFAAD Class Reference

AAC Decoder using faad: https://github.com/pschatzmann/arduino-libfaad This needs a stack of around 60000 and you need to make sure that memory is allocated on PSRAM. See https://www.pschatzmann.ch/home/2023/09/12/arduino-audio-tools-faat-aac-decoder/. More...

#include <CodecAACFAAD.h>

Inheritance diagram for AACDecoderFAAD:
AudioDecoder AudioWriter AudioInfoSource AudioInfoSupport

Public Member Functions

virtual void addNotifyAudioChange (AudioInfoSupport &bi)
 Adds target to be notified about audio changes.
 
virtual AudioInfo audioInfo ()
 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
 
bool begin ()
 Starts the processing.
 
virtual bool begin (AudioInfo info) override
 
virtual void clearNotifyAudioChange ()
 Deletes all change notify subscriptions.
 
virtual void end ()
 Releases the reserved memory.
 
void flush ()
 
bool isNotifyActive ()
 Checks if the automatic AudioInfo update is active.
 
virtual bool isResultPCM ()
 If true, the decoding result is PCM data.
 
virtual operator bool ()
 checks if the class is active
 
virtual bool removeNotifyAudioChange (AudioInfoSupport &bi)
 Removes a target in order not to be notified about audio changes.
 
virtual void setAudioInfo (AudioInfo from) override
 for most decoders this is not needed
 
void setInputBufferSize (int len)
 Defines the input buffer size.
 
void setNotifyActive (bool flag)
 Deactivate/Reactivate automatic AudioInfo updates: (default is active)
 
virtual void setOutput (AudioOutput &out_stream)
 Defines where the decoded result is written to.
 
virtual void setOutput (AudioStream &out_stream)
 Defines where the decoded result is written to.
 
virtual void setOutput (Print &out_stream) override
 Defines where the decoded result is written to.
 
void setUnderflowLimit (int len)
 Defines the min number of bytes that are submitted to the decoder.
 
size_t write (const void *aac_data, size_t len)
 Write AAC data to decoder.
 

Public Attributes

int id
 custom id to be used by application
 

Protected Member Functions

void decode (int minBufferSize)
 
void init (uint8_t *data, size_t len)
 
void notifyAudioChange (AudioInfo info)
 
void writeBlocking (Print *out, uint8_t *data, size_t len)
 

Protected Attributes

int buffer_size_input = 1024*2
 
NeAACDecConfigurationPtr conf
 
NeAACDecHandle hAac = nullptr
 
AudioInfo info
 
SingleBuffer< uint8_t > input_buffer {0}
 
bool is_init = false
 
bool is_notify_active = true
 
Vector< AudioInfoSupport * > notify_vector
 
Printp_print = nullptr
 
int underflow_limit = 500
 

Detailed Description

AAC Decoder using faad: https://github.com/pschatzmann/arduino-libfaad This needs a stack of around 60000 and you need to make sure that memory is allocated on PSRAM. See https://www.pschatzmann.ch/home/2023/09/12/arduino-audio-tools-faat-aac-decoder/.

Author
Phil Schatzmann

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