A2DP audio handle structure type. More...

#include <bt_codec.h>

Data Fields
bt_codec_state_t	state
	The Bluetooth codec state. More...

bt_audio_buffer_t	buffer_info
	The shared buffer information for the Bluetooth codec. More...

bool	underflow
	The Bluetooth codec data underflow occurred. More...

bool	waiting
	The Bluetooth codec is waiting to fill data. More...

uint16_t	audio_id
	The audio ID of the Bluetooth codec. More...

void(*	handler )(struct _bt_media_handle_t *handle, bt_codec_media_event_t event_id)
	The Bluetooth codec handler. More...

void(*	set_buffer )(struct _bt_media_handle_t handle, uint8_t buffer, uint32_t length)
	Set the shared buffer for bitstream. More...

void(*	set_get_data_function )(struct _bt_media_handle_t *handle, bt_codec_get_data func)
	Set the callback function for bitstream. More...

void(*	set_get_data_count_function )(struct _bt_media_handle_t *handle, bt_codec_get_data_count func)
	Set the callback function for bitstream. More...

void(*	get_write_buffer )(struct _bt_media_handle_t handle, uint8_t buffer, uint32_t length)
	Get the available length to write into a shared buffer and a pointer to the shared buffer. More...

void(*	get_read_buffer )(struct _bt_media_handle_t handle, uint8_t buffer, uint32_t length)
	Get the available length to read from a shared buffer and a pointer to the shared buffer. More...

void(*	write_data_done )(struct _bt_media_handle_t *handle, uint32_t length)
	Update the write pointer to the shared buffer. More...

void(*	finish_write_data )(struct _bt_media_handle_t *handle)
	Indicate the last data transfer. More...

void(*	reset_share_buffer )(struct _bt_media_handle_t *handle)
	Reset the shared buffer's information. More...

void(*	read_data_done )(struct _bt_media_handle_t *handle, uint32_t length)
	Update the read pointer to the shared buffer. More...

int32_t(*	get_free_space )(struct _bt_media_handle_t *handle)
	Get the free space length available in the shared buffer. More...

int32_t(*	get_data_count )(struct _bt_media_handle_t *handle)
	Get the available data amount of the shared buffer. More...

bt_codec_get_data	directly_access_dsp_function
	Set function to access DSP buffer directly. More...

bt_codec_get_data_count	get_data_count_function
	Set function to get available data amount of the uplayer total buffer size. More...

uint32_t(*	query_memory_size )(struct _bt_media_handle_t *handle)
	Query A2DP source total memory usage. More...

uint32_t(*	set_bit_rate )(struct _bt_media_handle_t *handle, uint32_t bit_rate)
	For A2DP source runtime change bit rate. More...

uint32_t(*	get_payload )(struct _bt_media_handle_t handle, uint8_t buffer, uint32_t buffer_size, uint32_t *sample_count)
	Get payload for A2DP source. More...

void(*	get_payload_done )(struct _bt_media_handle_t *handle)
	Prepare for next BT_CODEC_MEDIA_GET_PAYLOAD notification. More...

void(*	query_payload_size )(struct _bt_media_handle_t handle, uint32_t minimum, uint32_t *total)
	Get minimum payload size and current total payload size . More...

bt_codec_media_status_t(*	play )(struct _bt_media_handle_t *handle)
	The Bluetooth codec play function. More...

bt_codec_media_status_t(*	process )(struct _bt_media_handle_t *handle, bt_codec_media_event_t event_id)
	The Bluetooth codec process function. More...

bt_codec_media_status_t(*	stop )(struct _bt_media_handle_t *handle)
	The Bluetooth codec stop function. More...

Detailed Description

A2DP audio handle structure type.

Field Documentation

uint16_t audio_id

The audio ID of the Bluetooth codec.

bt_audio_buffer_t buffer_info

The shared buffer information for the Bluetooth codec.

bt_codec_get_data directly_access_dsp_function

Set function to access DSP buffer directly.

void(* finish_write_data) (struct _bt_media_handle_t *handle)

Indicate the last data transfer.

int32_t(* get_data_count) (struct _bt_media_handle_t *handle)

Get the available data amount of the shared buffer.

bt_codec_get_data_count get_data_count_function

Set function to get available data amount of the uplayer total buffer size.

int32_t(* get_free_space) (struct _bt_media_handle_t *handle)

Get the free space length available in the shared buffer.

uint32_t(* get_payload) (struct _bt_media_handle_t *handle, uint8_t *buffer, uint32_t buffer_size, uint32_t *sample_count)

Get payload for A2DP source.

void(* get_payload_done) (struct _bt_media_handle_t *handle)

Prepare for next BT_CODEC_MEDIA_GET_PAYLOAD notification.

void(* get_read_buffer) (struct _bt_media_handle_t *handle, uint8_t **buffer, uint32_t *length)

Get the available length to read from a shared buffer and a pointer to the shared buffer.

void(* get_write_buffer) (struct _bt_media_handle_t *handle, uint8_t **buffer, uint32_t *length)

Get the available length to write into a shared buffer and a pointer to the shared buffer.

void(* handler) (struct _bt_media_handle_t *handle, bt_codec_media_event_t event_id)

The Bluetooth codec handler.

bt_codec_media_status_t(* play) (struct _bt_media_handle_t *handle)

The Bluetooth codec play function.

bt_codec_media_status_t(* process) (struct _bt_media_handle_t *handle, bt_codec_media_event_t event_id)

The Bluetooth codec process function.

uint32_t(* query_memory_size) (struct _bt_media_handle_t *handle)

Query A2DP source total memory usage.

void(* query_payload_size) (struct _bt_media_handle_t *handle, uint32_t *minimum, uint32_t *total)

Get minimum payload size and current total payload size .

void(* read_data_done) (struct _bt_media_handle_t *handle, uint32_t length)

Update the read pointer to the shared buffer.

void(* reset_share_buffer) (struct _bt_media_handle_t *handle)

Reset the shared buffer's information.

uint32_t(* set_bit_rate) (struct _bt_media_handle_t *handle, uint32_t bit_rate)

For A2DP source runtime change bit rate.

void(* set_buffer) (struct _bt_media_handle_t *handle, uint8_t *buffer, uint32_t length)

Set the shared buffer for bitstream.

The audio streaming data can be filled through a shared buffer or through a callback function.

void(* set_get_data_count_function) (struct _bt_media_handle_t *handle, bt_codec_get_data_count func)

Set the callback function for bitstream.

The amount of streaming data can be queried.

void(* set_get_data_function) (struct _bt_media_handle_t *handle, bt_codec_get_data func)

Set the callback function for bitstream.

The audio streaming data can be filled through a shared buffer or through a callback function.

bt_codec_state_t state

The Bluetooth codec state.

bt_codec_media_status_t(* stop) (struct _bt_media_handle_t *handle)

The Bluetooth codec stop function.

bool underflow

The Bluetooth codec data underflow occurred.

bool waiting

The Bluetooth codec is waiting to fill data.

void(* write_data_done) (struct _bt_media_handle_t *handle, uint32_t length)

Update the write pointer to the shared buffer.

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

prebuilt/middleware/MTK/bluetooth/inc/bt_codec.h

Data Fields

Detailed Description

Field Documentation