This structure defines the AAC codec details. More...

#include <bt_a2dp.h>

Data Fields
uint8_t	object_type
	The object type b4: MPEG4 AAC scalable, b5: MPEG4 AAC LTP, b6: MPEG4 AAC LC, b7: MPEG2 AAC LC, b0~b3: reserved. More...

uint8_t	freq_h
	The first part of frequency, b0: 44.1kHz, b1: 32kHz, b2: 24kHz, b3: 22.05kHz, b4: 16kHz, b5: 12kHz, b6: 11.025kHz, b7: 8kHz. More...

uint8_t	reserved:2
	Pad bit (b0, b1): reserved. More...

uint8_t	channels:2
	The channels (b2,b3), b2: 2, b3: 1. More...

uint8_t	freq_l:4
	The last part of frequency (b4~b7), b4: 96kHz, b5: 88.2kHz, b6: 64kHz, b7: 48kHz. More...

uint8_t	br_h:7
	The first part of bit rate: b22~b16. More...

uint8_t	vbr:1
	The variable bit rate. More...

uint8_t	br_m
	The second part of bit rate: b15~b8. More...

uint8_t	br_l
	The last part of bit rate: b7~b0. More...

Detailed Description

This structure defines the AAC codec details.

Field Documentation

uint8_t br_h

The first part of bit rate: b22~b16.

uint8_t br_l

The last part of bit rate: b7~b0.

uint8_t br_m

The second part of bit rate: b15~b8.

uint8_t channels

The channels (b2,b3), b2: 2, b3: 1.

uint8_t freq_h

The first part of frequency, b0: 44.1kHz, b1: 32kHz, b2: 24kHz, b3: 22.05kHz, b4: 16kHz, b5: 12kHz, b6: 11.025kHz, b7: 8kHz.

uint8_t freq_l

The last part of frequency (b4~b7), b4: 96kHz, b5: 88.2kHz, b6: 64kHz, b7: 48kHz.

uint8_t object_type

The object type b4: MPEG4 AAC scalable, b5: MPEG4 AAC LTP, b6: MPEG4 AAC LC, b7: MPEG2 AAC LC, b0~b3: reserved.

uint8_t reserved

Pad bit (b0, b1): reserved.

uint8_t vbr

The variable bit rate.

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