arduino-audio-tools
Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
InputMerge< T > Class Template Reference

Merges multiple input channels. The input must be mono! So if you provide 2 mono channels you get a stereo signal as result with the left channel from channel 0 and the right from channel 1. More...

#include <AudioStreams.h>

Inheritance diagram for InputMerge< T >:
AudioStream BaseStream AudioInfoSupport AudioInfoSource Stream Print

Public Member Functions

 InputMerge ()=default
 Default constructor.
 
 InputMerge (Stream &left, Stream &right)
 Constructor for stereo signal from to mono input stream. More...
 
void add (Stream &in, float weight=1.0)
 Adds a new input stream.
 
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
 Provides the min available data from all streams.
 
virtual int availableForWrite () override
 
virtual bool begin ()
 
virtual bool begin (AudioInfo info)
 
virtual void clearNotifyAudioChange ()
 Deletes all change notify subscriptions.
 
void end () override
 Remove all input streams.
 
virtual void flush () override
 
bool isNotifyActive ()
 Checks if the automatic AudioInfo update is active.
 
virtual operator bool ()
 
size_t readBytes (uint8_t *data, size_t len) override
 Provides the data from all streams mixed together.
 
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 setWeight (int channel, float weight)
 Defines a new weight for the indicated channel: If you set it to 0 it is muted.
 
int size ()
 Number of stremams to which are mixed together = number of result channels.
 
virtual 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)
 Writes len bytes of silence (=0).
 

Protected Member Functions

virtual int not_supported (int out, const char *msg="")
 
void notifyAudioChange (AudioInfo info)
 
void refillReadBuffer ()
 

Protected Attributes

int _timeout = 10
 
AudioInfo info
 
bool is_notify_active = true
 
Vector< AudioInfoSupport * > notify_vector
 
Vector< Stream * > streams {10}
 
RingBuffer< uint8_t > tmp_in {0}
 
RingBuffer< uint8_t > tmp_out {0}
 
Vector< float > weights {10}
 

Detailed Description

template<typename T>
class audio_tools::InputMerge< T >

Merges multiple input channels. The input must be mono! So if you provide 2 mono channels you get a stereo signal as result with the left channel from channel 0 and the right from channel 1.

Author
Phil Schatzmann
Template Parameters
T

Constructor & Destructor Documentation

◆ InputMerge()

InputMerge ( Stream left,
Stream right 
)
inline

Constructor for stereo signal from to mono input stream.

Parameters
left
right

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