host_audio_task.h File Reference

#include "conf_usb.h"
#include "usb_host_task.h"

Data Structures
struct	cs_feature_unit_t
struct	host_audio_task_data_t

Macros
#define	Is_host_audio_configured()   (audio_connected && !Is_host_suspended())
#define	MAX_BMA_CONTROLS   4
	Define for each 'feature unit' the max numbers of bmControls. More...
#define	MAX_FEATURE_UNITS   3
	Define for each 'feature unit' the max numbers of bmaControls One of them is used by the microphone! More...
#define	MUTE_OFF   false
#define	MUTE_ON   true

Functions
uint16_t	host_audio_get_max (uint16_t unit, uint16_t channel_number)
	This function returns the 'MAX setting' feature of a particular unit. More...
void	host_audio_set_alt_interface (void)
void	host_audio_set_cur (uint16_t unit, uint16_t channel_number, uint16_t volume)
	This function set the 'current setting' feature of a particular unit. More...
void	host_audio_set_cur_mute (uint16_t unit, bool cs_mute)
	This function controls the Mute feature of a particular unit. More...
void	host_audio_task (void)
	This function manages the host audio task. More...
void	host_audio_task_init (void)
	This function initializes the host audio task. More...
void	host_set_sampling_rate (uint16_t endpoint, uint32_t sampling_rate)
	This function selects one of the sampling rate of the streaming interface. More...
void	host_sof_action (void)
	host_sof_action More...

Variables
volatile bool	audio_connected
host_audio_task_data_t *	host_audio_task_data

#define Is_host_audio_configured

(

)

(audio_connected && !Is_host_suspended())

#define MAX_BMA_CONTROLS   4

Define for each 'feature unit' the max numbers of bmControls.

Referenced by host_user_check_class().

#define MAX_FEATURE_UNITS   3

Define for each 'feature unit' the max numbers of bmaControls One of them is used by the microphone!

#define MUTE_OFF   false

#define MUTE_ON   true

uint16_t host_audio_get_max	(	uint16_t	unit,
		uint16_t	channel_number
	)

This function returns the 'MAX setting' feature of a particular unit.

References S_usb_setup_data::bmRequestType, BR_REQUEST_GET_MAX, S_usb_setup_data::bRequest, CS_VOLUME, data_stage, host_transfer_control(), S_usb_setup_data::incomplete_read, LSB, max, MSB, usb_request, S_usb_setup_data::wIndex, S_usb_setup_data::wLength, and S_usb_setup_data::wValue.

Referenced by host_audio_task().

void host_audio_set_alt_interface

(

void

)

References host_set_interface, and host_audio_task_data_t::interf_audio_stream.

Referenced by host_audio_task().

void host_audio_set_cur	(	uint16_t	unit,
		uint16_t	channel_number,
		uint16_t	volume
	)

This function set the 'current setting' feature of a particular unit.

References S_usb_setup_data::bmRequestType, BR_REQUEST_SET_CUR, S_usb_setup_data::bRequest, CS_VOLUME, data_stage, host_transfer_control(), S_usb_setup_data::incomplete_read, LSB, MSB, usb_request, S_usb_setup_data::wIndex, S_usb_setup_data::wLength, and S_usb_setup_data::wValue.

Referenced by host_audio_task().

void host_audio_set_cur_mute	(	uint16_t	unit,
		bool	cs_mute
	)

This function controls the Mute feature of a particular unit.

References S_usb_setup_data::bmRequestType, BR_REQUEST_SET_CUR, S_usb_setup_data::bRequest, CS_MUTE, data_stage, host_transfer_control(), S_usb_setup_data::incomplete_read, usb_request, S_usb_setup_data::wIndex, S_usb_setup_data::wLength, and S_usb_setup_data::wValue.

Referenced by host_audio_task().

void host_audio_task

(

void

)

This function manages the host audio task.

References AUDIO_CLASS, audio_connected, audio_new_device_connected, AUDIOSTREAMING_SUBCLASS, cs_feature_unit_t::bmaControls, host_audio_task_data_t::g_cs_feature, host_audio_task_data_t::g_cs_num_features_unit, host_audio_task_data_t::g_n_bits_per_sample, host_audio_task_data_t::g_n_channels, host_audio_task_data_t::g_sample_freq, Get_class, Get_ep_pipe, Get_interface_number, Get_nb_ep, Get_nb_supported_interface, Get_subclass, Host_ack_in_received, Host_ack_nak_received, host_audio_get_max(), host_audio_set_alt_interface(), host_audio_set_cur(), host_audio_set_cur_mute(), Host_enable_continuous_in_mode, Host_enable_sof_interrupt, Host_free_in, Host_get_pipe_endpoint_number, host_set_sampling_rate(), Host_unfreeze_pipe, host_audio_task_data_t::interf_audio_stream, interf_audio_stream, Is_ep_in, Is_host_in_received, Is_host_nak_received, Is_host_ready, Is_host_stall, max, mmi_activity_display(), mmi_display(), MSK_EP_DIR, cs_feature_unit_t::n_bmaControls, PIPE_AUDIO_IN, pipe_audio_in, cs_feature_unit_t::unit, USB_STREAM_HOST, usb_stream_init(), usb_stream_input(), and usb_stream_resync().

Referenced by host_audio_task_init(), and main().

void host_audio_task_init

(

void

)

This function initializes the host audio task.

References host_audio_task(), player_init(), and sof_cnt.

Referenced by main().

void host_set_sampling_rate	(	uint16_t	endpoint,
		uint32_t	sampling_rate
	)

This function selects one of the sampling rate of the streaming interface.

References S_usb_setup_data::bmRequestType, S_usb_setup_data::bRequest, data_stage, DEVICE_DESCRIPTOR, host_transfer_control(), S_usb_setup_data::incomplete_read, MSB1, MSB2, MSB3, usb_request, S_usb_setup_data::wIndex, S_usb_setup_data::wLength, and S_usb_setup_data::wValue.

Referenced by host_audio_task().

host_audio_task_data_t* host_audio_task_data

Referenced by host_user_check_class().