a2dp-codec.h File Reference

Advance Audio Distribution Profile - SBC Codec header. More...

#include <stdint.h>

Go to the source code of this file.

Data Structures
struct	bt_a2dp_codec_sbc_params
	SBC Codec. More...

Macros
#define	BT_A2DP_SBC_SAMP_FREQ(preset)   ((preset->config[0] >> 4) & 0x0f)
	Gets the sampling rate from a codec preset.
#define	BT_A2DP_SBC_CHAN_MODE(preset)   ((preset->config[0]) & 0x0f)
	Gets the channel mode from a codec preset.
#define	BT_A2DP_SBC_BLK_LEN(preset)   ((preset->config[1] >> 4) & 0x0f)
	Gets the block length from a codec preset.
#define	BT_A2DP_SBC_SUB_BAND(preset)   ((preset->config[1] >> 2) & 0x03)
	Gets the number subbands from a codec preset.
#define	BT_A2DP_SBC_ALLOC_MTHD(preset)   ((preset->config[1]) & 0x03)
	Gets the bitpool allocation method from a codec preset.
Sampling Frequency
#define	A2DP_SBC_SAMP_FREQ_16000   BIT(7)
	16 kHz
#define	A2DP_SBC_SAMP_FREQ_32000   BIT(6)
	32 kHz
#define	A2DP_SBC_SAMP_FREQ_44100   BIT(5)
	44.1 kHz
#define	A2DP_SBC_SAMP_FREQ_48000   BIT(4)
	48 kHz
Channel Mode
#define	A2DP_SBC_CH_MODE_MONO   BIT(3)
	Mono.
#define	A2DP_SBC_CH_MODE_DUAL   BIT(2)
	Dual Channel.
#define	A2DP_SBC_CH_MODE_STREO   BIT(1)
	Stereo.
#define	A2DP_SBC_CH_MODE_JOINT   BIT(0)
	Joint Stereo.
Block Length
#define	A2DP_SBC_BLK_LEN_4   BIT(7)
	4 blocks
#define	A2DP_SBC_BLK_LEN_8   BIT(6)
	8 blocks
#define	A2DP_SBC_BLK_LEN_12   BIT(5)
	12 blocks
#define	A2DP_SBC_BLK_LEN_16   BIT(4)
	16 blocks
Subbands
#define	A2DP_SBC_SUBBAND_4   BIT(3)
	4 subbands
#define	A2DP_SBC_SUBBAND_8   BIT(2)
	8 subbands
Bit pool Allocation Method
#define	A2DP_SBC_ALLOC_MTHD_SNR   BIT(1)
	Allocate based on loudness of the subband signal.
#define	A2DP_SBC_ALLOC_MTHD_LOUDNESS   BIT(0)
	Allocate based on the signal-to-noise ratio.

Detailed Description

Advance Audio Distribution Profile - SBC Codec header.

Macro Definition Documentation

A2DP_SBC_ALLOC_MTHD_LOUDNESS

#define A2DP_SBC_ALLOC_MTHD_LOUDNESS   BIT(0)

Allocate based on the signal-to-noise ratio.

A2DP_SBC_ALLOC_MTHD_SNR

#define A2DP_SBC_ALLOC_MTHD_SNR   BIT(1)

Allocate based on loudness of the subband signal.

A2DP_SBC_BLK_LEN_12

#define A2DP_SBC_BLK_LEN_12   BIT(5)

12 blocks

A2DP_SBC_BLK_LEN_16

#define A2DP_SBC_BLK_LEN_16   BIT(4)

16 blocks

A2DP_SBC_BLK_LEN_4

#define A2DP_SBC_BLK_LEN_4   BIT(7)

4 blocks

A2DP_SBC_BLK_LEN_8

#define A2DP_SBC_BLK_LEN_8   BIT(6)

8 blocks

A2DP_SBC_CH_MODE_DUAL

#define A2DP_SBC_CH_MODE_DUAL   BIT(2)

Dual Channel.

A2DP_SBC_CH_MODE_JOINT

#define A2DP_SBC_CH_MODE_JOINT   BIT(0)

Joint Stereo.

A2DP_SBC_CH_MODE_MONO

#define A2DP_SBC_CH_MODE_MONO   BIT(3)

Mono.

A2DP_SBC_CH_MODE_STREO

#define A2DP_SBC_CH_MODE_STREO   BIT(1)

Stereo.

A2DP_SBC_SAMP_FREQ_16000

#define A2DP_SBC_SAMP_FREQ_16000   BIT(7)

16 kHz

A2DP_SBC_SAMP_FREQ_32000

#define A2DP_SBC_SAMP_FREQ_32000   BIT(6)

32 kHz

A2DP_SBC_SAMP_FREQ_44100

#define A2DP_SBC_SAMP_FREQ_44100   BIT(5)

44.1 kHz

A2DP_SBC_SAMP_FREQ_48000

#define A2DP_SBC_SAMP_FREQ_48000   BIT(4)

48 kHz

A2DP_SBC_SUBBAND_4

#define A2DP_SBC_SUBBAND_4   BIT(3)

4 subbands

A2DP_SBC_SUBBAND_8

#define A2DP_SBC_SUBBAND_8   BIT(2)

8 subbands

BT_A2DP_SBC_ALLOC_MTHD

#define BT_A2DP_SBC_ALLOC_MTHD

(

preset

)

((preset->config[1]) & 0x03)

Gets the bitpool allocation method from a codec preset.

Parameters

preset

Codec preset

BT_A2DP_SBC_BLK_LEN

#define BT_A2DP_SBC_BLK_LEN

(

preset

)

((preset->config[1] >> 4) & 0x0f)

Gets the block length from a codec preset.

Parameters

preset

Codec preset

BT_A2DP_SBC_CHAN_MODE

#define BT_A2DP_SBC_CHAN_MODE

(

preset

)

((preset->config[0]) & 0x0f)

Gets the channel mode from a codec preset.

Parameters

preset

Codec preset

BT_A2DP_SBC_SAMP_FREQ

#define BT_A2DP_SBC_SAMP_FREQ

(

preset

)

((preset->config[0] >> 4) & 0x0f)

Gets the sampling rate from a codec preset.

Parameters

preset

Codec preset

BT_A2DP_SBC_SUB_BAND

#define BT_A2DP_SBC_SUB_BAND

(

preset

)

((preset->config[1] >> 2) & 0x03)

Gets the number subbands from a codec preset.

Parameters

preset

Codec preset