arduino-audio-tools
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We can build a input or an output chain: an input chain starts with setInput(); followed by add() an output chain consinsts of add() and ends with setOutput();. More...
#include <Pipeline.h>
Classes | |
struct | ModifyingStreamAdapter |
Support for ModifyingOutput. More... | |
Public Member Functions | |
bool | add (ModifyingOutput &out) |
adds a component | |
bool | add (ModifyingStream &io) |
adds a component | |
void | addNotifyAudioChange (AudioInfoSupport &bi) override |
Subscribes to notifications on last component of the chain. | |
virtual AudioInfo | audioInfo () override |
provides the actual input AudioInfo | |
AudioInfo | audioInfoOut () override |
Provides the resulting AudioInfo from the last node. | |
int | available () override |
int | availableForWrite () override |
bool | begin () override |
Optional method: Calls begin on all components. | |
bool | begin (AudioInfo info) |
virtual void | clearNotifyAudioChange () |
Deletes all change notify subscriptions. | |
void | end () override |
Calls end on all components. | |
virtual void | flush () override |
bool | hasComponents () |
Returns true if we have at least 1 component. | |
bool | isActive () |
Determines if the pipeline is active. | |
bool | isNotifyActive () |
Checks if the automatic AudioInfo update is active. | |
bool | isOK () |
Returns true if pipeline is correctly set up. | |
ModifyingStream & | last () |
Provides the last component. | |
operator bool () | |
Returns true if pipeline is correctly set up and is active. | |
ModifyingStream & | operator[] (int idx) |
Access to the components by index. | |
size_t | readBytes (uint8_t *data, size_t len) override |
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. | |
void | setActive (bool flag) |
Activates/deactivates the pipeline (default is active) | |
void | setAudioInfo (AudioInfo newInfo) override |
Defines the AudioInfo for the first node. | |
bool | setInput (AudioStream &in) |
Defines the input for an input pipeline: must be first call before add() | |
bool | setInput (Stream &in) |
Defines the input for an input pipeline: must be first call before add() | |
void | setNotifyActive (bool flag) |
Activates/deactivates notifications. | |
bool | setOutput (AudioOutput &out) |
Defines the output for an output pipeline: must be last call after add() | |
bool | setOutput (AudioStream &out) |
Defines the output for an output pipeline: must be last call after add() | |
bool | setOutput (Print &out) |
Defines the output for an output pipeline: must be last call after add() | |
int | size () |
Provides the number of components. | |
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 | |
Stream * | getInput () |
virtual int | not_supported (int out, const char *msg="") |
void | notifyAudioChange (AudioInfo info) |
void | refillReadBuffer () |
Protected Attributes | |
int | _timeout = 10 |
Vector< ModifyingStream * > | cleanup {0} |
Vector< ModifyingStream * > | components {0} |
bool | has_input = false |
bool | has_output = false |
AudioInfo | info |
bool | is_active = true |
bool | is_notify_active = true |
bool | is_ok = true |
Vector< AudioInfoSupport * > | notify_vector |
AudioStream * | p_ai_input = nullptr |
AudioInfoSource * | p_ai_source = nullptr |
AudioOutput * | p_out_print = nullptr |
AudioStream * | p_out_stream = nullptr |
Print * | p_print = nullptr |
Stream * | p_stream = nullptr |
RingBuffer< uint8_t > | tmp_in {0} |
RingBuffer< uint8_t > | tmp_out {0} |
We can build a input or an output chain: an input chain starts with setInput(); followed by add() an output chain consinsts of add() and ends with setOutput();.
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inline |
Optional method: Calls begin on all components and setAudioInfo on first coponent to update the full chain
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inlineprotected |
we read from the last node or the defined input: null if no input is available