Inheritance diagram for USBDeviceAudioESP32:

Public Member Functions
	USBDeviceAudioESP32 (USBAudioConfig config)

bool	active (void)

virtual uint8_t	allocEndpoint (uint8_t in)

virtual uint8_t	allocInterface (uint8_t count=1)

USBDeviceAudioAPI &	api ()

virtual bool	begin (USBAudioConfig config)

int	channels ()

USBAudioConfig	defaultConfig ()

void	end ()

virtual void	fb_done_cb (uint8_t func_id)

virtual void	feedback_interval_isr (uint8_t func_id, uint32_t frame_number, uint8_t interval_shift)

void	feedback_params_cb (uint8_t func_id, uint8_t alt_itf, audio_feedback_params_t *feedback_param) override

bool	get_req_entity_cb (uint8_t rhport, tusb_control_request_t const *p_request) override

bool	get_req_ep_cb (uint8_t rhport, tusb_control_request_t const *p_request) override

bool	get_req_itf_cb (uint8_t rhport, tusb_control_request_t const *p_request) override

virtual uint8_t	getFeatureUnitLength ()

uint16_t	getInterfaceDescriptor (uint8_t *buf, uint16_t bufsize)

virtual uint16_t	getInterfaceDescriptor (uint8_t itfnum, uint8_t *buf, uint16_t bufsize)=0

size_t	getInterfaceDescriptorLength (uint8_t itfnum) override
	Determine the interface descriptor length.

virtual uint16_t	getIOSize ()

virtual uint16_t	getMaxEPSize ()

virtual void	int_done_cb (uint8_t rhport)

bool	isHeadset ()

bool	isMicrophone ()

bool	isMute (int channel)

bool	isSpeaker ()

	operator bool ()

uint32_t	rate ()

bool	rx_done_post_read_cb (uint8_t rhport, uint16_t n_bytes_received, uint8_t func_id, uint8_t ep_out, uint8_t cur_alt_setting) override

bool	rx_done_pre_read_cb (uint8_t rhport, uint16_t n_bytes_received, uint8_t func_id, uint8_t ep_out, uint8_t cur_alt_setting) override

bool	set_itf_cb (uint8_t rhport, tusb_control_request_t const *p_request) override

bool	set_itf_close_EP_cb (uint8_t rhport, tusb_control_request_t const *p_request) override

bool	set_req_entity_cb (uint8_t rhport, tusb_control_request_t const p_request, uint8_t buf) override

bool	set_req_ep_cb (uint8_t rhport, tusb_control_request_t const p_request, uint8_t pBuff) override

bool	set_req_itf_cb (uint8_t rhport, tusb_control_request_t const p_request, uint8_t pBuff) override

void	setInput (Stream &in)
	Alternaive to setReadCallback.

void	setOutput (Print &out)
	Alternative to setWriteCallback.

void	setReadCallback (size_t(read_cb)(uint8_t data, size_t len, USBDeviceAudio &ref))

void	setWriteCallback (size_t(write_cb)(const uint8_t data, size_t len, USBDeviceAudio &ref))

AudioProcessingStatus	status ()
	Provide the actual status.

bool	tx_done_post_load_cb (uint8_t rhport, uint16_t n_bytes_copied, uint8_t itf, uint8_t ep_in, uint8_t cur_alt_setting) override

bool	tx_done_pre_load_cb (uint8_t rhport, uint8_t itf, uint8_t ep_in, uint8_t cur_alt_setting) override

bool	updateLED (int pin)
	Call from loop to blink led.

uint16_t	volume (int channel)

Public Attributes
int	func_id = 0

Protected Member Functions
void	append (uint8_t to, uint8_t str, int len)

virtual bool	clock_get_request (uint8_t rhport, tusb_control_request_t const *p_request)

virtual bool	clock_set_request (uint8_t rhport, tusb_control_request_t const p_request, uint8_t const buf)

virtual bool	feature_unit_get_request (uint8_t rhport, tusb_control_request_t const *p_request)

virtual bool	feature_unit_set_request (uint8_t rhport, tusb_control_request_t const p_request, uint8_t const buf)

uint16_t	interfaceDescriptor (uint8_t *buf, uint16_t bufsize)

void	interfaceDescriptorHeader (uint8_t *buf, uint8_t total_len, uint8_t category)

void	interfaceDescriptorHeadset (uint8_t *buf, uint8_t total_len)

void	interfaceDescriptorMicrophone (uint8_t *buf, uint8_t total_len)

void	interfaceDescriptorSpeaker (uint8_t *buf, uint8_t total_len)

void	setStatus (AudioProcessingStatus status)
	Define the led delay.

void	setupDebugPins ()

int	setupDescriptorCB ()

Static Protected Member Functions
static size_t	defaultReadCB (uint8_t *data, size_t len, USBDeviceAudio &ref)

static size_t	defaultWriteCB (const uint8_t *data, size_t len, USBDeviceAudio &ref)

Protected Attributes
USBDeviceAudioAPI	_api

uint8_t	_clk_is_valid = true

int	_desc_append_pos = 0

int	_desc_len = 0

uint8_t	_ep_ctl = 0

uint8_t	_ep_fb = 0

uint8_t	_ep_int = 0

uint8_t	_ep_mic = 0

uint8_t	_ep_spk = 0

int	_epin_count = 0

int	_epout_count = 0

ByteBuffer	_in_buffer

bool	_is_led_setup = true

int	_itf_count = 0

uint8_t	_itf_number_total = 0

uint8_t	_itfnum_ctl = 0

uint8_t	_itfnum_mic = 0

uint8_t	_itfnum_spk = 0

bool	_led_active = false

uint64_t	_led_timeout = 0

std::vector< bool >	_mute

ByteBuffer	_out_buffer

AudioProcessingStatus	_processing_status = AudioProcessingStatus::INACTIVE

uint8_t	_stridx = 0

std::vector< uint16_t >	_volume

USBAudioConfig	cfg

std::vector< uint8_t >	interface_descriptor

Print *	p_print = nullptr

Stream *	p_stream = nullptr

Member Function Documentation

◆ setReadCallback()

void setReadCallback ( size_t(*)(uint8_t *data, size_t len, USBDeviceAudio &ref) read_cb )

inlineinherited

callback for audio source (microphone): we provide the audio data e.g. from the adc

◆ setupDebugPins()

void setupDebugPins ( )

inlineprotectedinherited

We can use 8 debug pins with a logic analyser We can use 8 debug pins with a logic analyser

◆ setWriteCallback()

void setWriteCallback ( size_t(*)(const uint8_t *data, size_t len, USBDeviceAudio &ref) write_cb )

inlineinherited

callback for audio sink (speaker): we write out the received data e.g. to a dac

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

src/AudioTools/Sandbox/USB/USBDeviceAudioESP32.h

Public Member Functions

Public Attributes

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Member Function Documentation

◆ setReadCallback()

◆ setupDebugPins()

◆ setWriteCallback()