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

Decoder for ADPCM. Depends on https://github.com/pschatzmann/adpcm. More...

#include <CodecADPCM.h>

Inheritance diagram for ADPCMDecoder:
AudioDecoderExt AudioDecoder AudioWriter AudioInfoSource AudioInfoSupport

Public Member Functions

 ADPCMDecoder (AVCodecID id, int blockSize=ADAPCM_DEFAULT_BLOCK_SIZE)
 
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 () override
 
virtual bool begin (AudioInfo info) override
 
int blockSize ()
 Provides the block size (size of encoded frame) (only available after calling begin)
 
virtual void clearNotifyAudioChange ()
 Deletes all change notify subscriptions.
 
void end () override
 
int frameSize ()
 Provides the frame size (size of decoded frame) (only available after calling begin)
 
bool isNotifyActive ()
 Checks if the automatic AudioInfo update is active.
 
virtual bool isResultPCM ()
 If true, the decoding result is PCM data.
 
 operator bool () override
 
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 setBlockSize (int blockSize) override
 
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.
 
virtual size_t write (const void *input_buffer, size_t length) override
 

Public Attributes

int id
 custom id to be used by application
 

Protected Member Functions

virtual bool decode (uint8_t byte)
 
void notifyAudioChange (AudioInfo info)
 
void writeBlocking (Print *out, uint8_t *data, size_t len)
 

Protected Attributes

Vector< uint8_t > adpcm_block
 
int block_size = 0
 
int current_byte = 0
 
adpcm_ffmpeg::ADPCMDecoder decoder
 
AudioInfo info
 
bool is_notify_active = true
 
bool is_started = false
 
Vector< AudioInfoSupport * > notify_vector
 
Printp_print = nullptr
 

Detailed Description

Decoder for ADPCM. Depends on https://github.com/pschatzmann/adpcm.

Author
Phil Schatzmann

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