We support the Stream interface for the I2S access. In addition we allow a separate mute pin which might also be used to drive a LED... More...
#include <I2SStream.h>
Inheritance diagram for I2SStream:
Public Member Functions | |
| 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 | |
| virtual int | available () override |
| Provides the available audio data. | |
| virtual int | availableForWrite () override |
| Provides the available audio data. | |
| bool | begin () |
| bool | begin (I2SConfig cfg) |
| Starts the I2S interface. | |
| virtual void | clearNotifyAudioChange () |
| Deletes all change notify subscriptions. | |
| I2SConfig | defaultConfig (RxTxMode mode=TX_MODE) |
| Provides the default configuration. | |
| I2SDriver * | driver () |
| Provides access to the driver. | |
| void | end () |
| Stops the I2S interface. | |
| void | flush () override |
| bool | isNotifyActive () |
| Checks if the automatic AudioInfo update is active. | |
| operator bool () | |
| virtual size_t | readBytes (uint8_t *data, size_t length) override |
| Reads the audio data. | |
| 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 info) |
| updates the sample rate dynamically | |
| void | setNotifyActive (bool flag) |
| Deactivate/Reactivate automatic AudioInfo updates: (default is active) | |
| virtual size_t | write (const uint8_t *buffer, size_t size) |
| Writes the audio data to I2S. | |
| virtual size_t | write (uint8_t ch) override |
| virtual void | writeSilence (size_t len) |
| Writes len bytes of silence (=0). | |
Protected Member Functions | |
| void | mute (bool is_mute) |
| set mute pin on or off | |
| virtual int | not_supported (int out, const char *msg="") |
| void | notifyAudioChange (AudioInfo info) |
| void | refillReadBuffer () |
Protected Attributes | |
| int | _timeout = 10 |
| I2SDriver | i2s |
| AudioInfo | info |
| bool | is_active = false |
| bool | is_notify_active = true |
| int | mute_pin |
| Vector< AudioInfoSupport * > | notify_vector |
| RingBuffer< uint8_t > | tmp_in {0} |
| RingBuffer< uint8_t > | tmp_out {0} |
Detailed Description
We support the Stream interface for the I2S access. In addition we allow a separate mute pin which might also be used to drive a LED...
- Template Parameters
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T
- Copyright
- GPLv3
The documentation for this class was generated from the following file:
- src/AudioI2S/I2SStream.h
