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

Obsolete: WavIMADecoder - based on WAVDecoder - We parse the header data as we receive it and send the sound data to the stream which was indicated in the constructor. Only WAV files with WAVE_FORMAT_IMA_ADPCM are supported by this codec! More...

#include <CodecWavIMA.h>

Inheritance diagram for WavIMADecoder:
AudioDecoder AudioWriter AudioInfoSource

Public Member Functions

 WavIMADecoder ()
 Construct a new WavIMADecoder object.
 
 WavIMADecoder (Print &out_stream, AudioInfoSupport &bi)
 Construct a new WavIMADecoder object. More...
 
 WavIMADecoder (Print &out_stream, bool active=true)
 Construct a new WavIMADecoder object. More...
 
AudioInfo audioInfo ()
 
WavIMAAudioInfoaudioInfoEx ()
 
void begin ()
 
virtual void begin (AudioInfo info)
 
void end ()
 
virtual bool isResultPCM ()
 If true, the decoding result is PCM data.
 
const char * mime ()
 
virtual operator bool ()
 
int readStream (Stream &in)
 Alternative API which provides the data from an input stream.
 
virtual void setAudioInfo (AudioInfo from) override
 for most decoders this is not needed
 
void setNotifyAudioChange (AudioInfoSupport &bi)
 Registers an object that is notified if the audio format is changing.
 
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.
 
void setOutput (Print &out_stream)
 Defines the output Stream.
 
virtual size_t write (const void *in_ptr, size_t in_size)
 

Protected Member Functions

void decodeBlock (int channels)
 
int16_t decodeSample (uint8_t sample, int channel=0)
 
void processInput (const uint8_t *data, size_t size)
 
void writeBlocking (Print *out, uint8_t *data, size_t len)
 

Protected Attributes

bool active
 
AudioInfoSupportaudioBaseInfoSupport
 
size_t bytes_per_decoded_block = 0
 
size_t bytes_per_encoded_block = 0
 
WavIMAHeader header
 
IMAState ima_states [2]
 
AudioInfo info
 
uint8_t * input_buffer = nullptr
 
int32_t input_pos = 0
 
bool isFirst = true
 
bool isValid = true
 
Printout
 
int16_t * output_buffer = nullptr
 
AudioInfoSupportp_notify = nullptr
 
Printp_print = nullptr
 
size_t remaining_bytes = 0
 
size_t samples_per_decoded_block = 0
 

Detailed Description

Obsolete: WavIMADecoder - based on WAVDecoder - We parse the header data as we receive it and send the sound data to the stream which was indicated in the constructor. Only WAV files with WAVE_FORMAT_IMA_ADPCM are supported by this codec!

We recommend using the WAVDecoder with a corresponding ADPCMDecoder instead.

Author
Phil Schatzmann
Norman Ritz

Constructor & Destructor Documentation

◆ WavIMADecoder() [1/2]

WavIMADecoder ( Print out_stream,
bool  active = true 
)
inline

Construct a new WavIMADecoder object.

Parameters
out_streamOutput Stream to which we write the decoded result

◆ WavIMADecoder() [2/2]

WavIMADecoder ( Print out_stream,
AudioInfoSupport bi 
)
inline

Construct a new WavIMADecoder object.

Parameters
out_streamOutput Stream to which we write the decoded result
biObject that will be notified about the Audio Formt (Changes)

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