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

Data Structures
struct	bt_a2dp_codec_sbc_params
	SBC Codec. More...

Macros
#define	A2DP_SBC_SAMP_FREQ_16000 BIT(7)

#define	A2DP_SBC_SAMP_FREQ_32000 BIT(6)

#define	A2DP_SBC_SAMP_FREQ_44100 BIT(5)

#define	A2DP_SBC_SAMP_FREQ_48000 BIT(4)

#define	A2DP_SBC_CH_MODE_MONO BIT(3)

#define	A2DP_SBC_CH_MODE_DUAL BIT(2)

#define	A2DP_SBC_CH_MODE_STREO BIT(1)

#define	A2DP_SBC_CH_MODE_JOINT BIT(0)

#define	A2DP_SBC_BLK_LEN_4 BIT(7)

#define	A2DP_SBC_BLK_LEN_8 BIT(6)

#define	A2DP_SBC_BLK_LEN_12 BIT(5)

#define	A2DP_SBC_BLK_LEN_16 BIT(4)

#define	A2DP_SBC_SUBBAND_4 BIT(3)

#define	A2DP_SBC_SUBBAND_8 BIT(2)

#define	A2DP_SBC_ALLOC_MTHD_SNR BIT(1)

#define	A2DP_SBC_ALLOC_MTHD_LOUDNESS BIT(0)

#define	BT_A2DP_SBC_SAMP_FREQ(cap) ((cap->config[0] >> 4) & 0x0f)

#define	BT_A2DP_SBC_CHAN_MODE(cap) ((cap->config[0]) & 0x0f)

#define	BT_A2DP_SBC_BLK_LEN(cap) ((cap->config[1] >> 4) & 0x0f)

#define	BT_A2DP_SBC_SUB_BAND(cap) ((cap->config[1] >> 2) & 0x03)

#define	BT_A2DP_SBC_ALLOC_MTHD(cap) ((cap->config[1]) & 0x03)

#define	BT_A2DP_SBC_MEDIA_HDR_NUM_FRAMES_GET(hdr) FIELD_GET(GENMASK(3, 0), (hdr))
	If the F bit is set to 0, this field indicates the number of frames contained in this packet.

#define	BT_A2DP_SBC_MEDIA_HDR_L_GET(hdr) FIELD_GET(BIT(5), (hdr))
	Set to 1 for the last packet of a fragmented SBC frame, otherwise set to 0.

#define	BT_A2DP_SBC_MEDIA_HDR_S_GET(hdr) FIELD_GET(BIT(6), (hdr))
	Set to 1 for the starting packet of a fragmented SBC frame, otherwise set to 0.

#define	BT_A2DP_SBC_MEDIA_HDR_F_GET(hdr) FIELD_GET(BIT(7), (hdr))
	Set to 1 if the SBC frame is fragmented, otherwise set to 0.

#define	BT_A2DP_SBC_MEDIA_HDR_NUM_FRAMES_SET(hdr, val) hdr = ((hdr) & ~GENMASK(3, 0)) \| FIELD_PREP(GENMASK(3, 0), (val))
	If the F bit is set to 0, this field indicates the number of frames contained in this packet.

#define	BT_A2DP_SBC_MEDIA_HDR_L_SET(hdr, val) hdr = ((hdr) & ~BIT(5)) \| FIELD_PREP(BIT(5), (val))
	Set to 1 for the last packet of a fragmented SBC frame, otherwise set to 0.

#define	BT_A2DP_SBC_MEDIA_HDR_S_SET(hdr, val) hdr = ((hdr) & ~BIT(6)) \| FIELD_PREP(BIT(6), (val))
	Set to 1 for the starting packet of a fragmented SBC frame, otherwise set to 0.

#define	BT_A2DP_SBC_MEDIA_HDR_F_SET(hdr, val) hdr = ((hdr) & ~BIT(7)) \| FIELD_PREP(BIT(7), (val))
	Set to 1 if the SBC frame is fragmented, otherwise set to 0.

#define	BT_A2DP_SBC_MEDIA_HDR_ENCODE(num_frames, l, s, f)

Functions
uint8_t	bt_a2dp_sbc_get_channel_num (struct bt_a2dp_codec_sbc_params *sbc_codec)
	get channel num of a2dp sbc config.

uint32_t	bt_a2dp_sbc_get_sampling_frequency (struct bt_a2dp_codec_sbc_params *sbc_codec)
	get sample rate of a2dp sbc config.

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)

◆ A2DP_SBC_ALLOC_MTHD_SNR

#define A2DP_SBC_ALLOC_MTHD_SNR BIT(1)

◆ A2DP_SBC_BLK_LEN_12

#define A2DP_SBC_BLK_LEN_12 BIT(5)

◆ A2DP_SBC_BLK_LEN_16

#define A2DP_SBC_BLK_LEN_16 BIT(4)

◆ A2DP_SBC_BLK_LEN_4

#define A2DP_SBC_BLK_LEN_4 BIT(7)

◆ A2DP_SBC_BLK_LEN_8

#define A2DP_SBC_BLK_LEN_8 BIT(6)

◆ A2DP_SBC_CH_MODE_DUAL

#define A2DP_SBC_CH_MODE_DUAL BIT(2)

◆ A2DP_SBC_CH_MODE_JOINT

#define A2DP_SBC_CH_MODE_JOINT BIT(0)

◆ A2DP_SBC_CH_MODE_MONO

#define A2DP_SBC_CH_MODE_MONO BIT(3)

◆ A2DP_SBC_CH_MODE_STREO

#define A2DP_SBC_CH_MODE_STREO BIT(1)

◆ A2DP_SBC_SAMP_FREQ_16000

#define A2DP_SBC_SAMP_FREQ_16000 BIT(7)

◆ A2DP_SBC_SAMP_FREQ_32000

#define A2DP_SBC_SAMP_FREQ_32000 BIT(6)

◆ A2DP_SBC_SAMP_FREQ_44100

#define A2DP_SBC_SAMP_FREQ_44100 BIT(5)

◆ A2DP_SBC_SAMP_FREQ_48000

#define A2DP_SBC_SAMP_FREQ_48000 BIT(4)

◆ A2DP_SBC_SUBBAND_4

#define A2DP_SBC_SUBBAND_4 BIT(3)

◆ A2DP_SBC_SUBBAND_8

#define A2DP_SBC_SUBBAND_8 BIT(2)

◆ BT_A2DP_SBC_ALLOC_MTHD

#define BT_A2DP_SBC_ALLOC_MTHD ( cap ) ((cap->config[1]) & 0x03)

◆ BT_A2DP_SBC_BLK_LEN

#define BT_A2DP_SBC_BLK_LEN ( cap ) ((cap->config[1] >> 4) & 0x0f)

◆ BT_A2DP_SBC_CHAN_MODE

#define BT_A2DP_SBC_CHAN_MODE ( cap ) ((cap->config[0]) & 0x0f)

◆ BT_A2DP_SBC_MEDIA_HDR_ENCODE

#define BT_A2DP_SBC_MEDIA_HDR_ENCODE	(	num_frames,
		l,
		s,
		f
	)

Value:

FIELD_PREP(GENMASK(3, 0), num_frames) | FIELD_PREP(BIT(5), l) |\

FIELD_PREP(BIT(6), s) | FIELD_PREP(BIT(7), f)

s

irp nz macro MOVR cc s mov cc s endm endr irp aw macro LDR aa s

Definition asm-macro-32-bit-gnu.h:17

BIT

#define BIT(n)

Unsigned integer with bit position n set (signed in assembly language).

Definition util_macro.h:44

GENMASK

#define GENMASK(h, l)

Create a contiguous bitmask starting at bit position l and ending at position h.

Definition util.h:70

FIELD_PREP

#define FIELD_PREP(mask, value)

Prepare a bitfield element using value with mask representing its field position and width.

Definition util.h:94

f

struct k_futex f

Definition kobject.c:1327

◆ BT_A2DP_SBC_MEDIA_HDR_F_GET

#define BT_A2DP_SBC_MEDIA_HDR_F_GET ( hdr ) FIELD_GET(BIT(7), (hdr))

Set to 1 if the SBC frame is fragmented, otherwise set to 0.

◆ BT_A2DP_SBC_MEDIA_HDR_F_SET

#define BT_A2DP_SBC_MEDIA_HDR_F_SET	(	hdr,
		val
	)	hdr = ((hdr) & ~BIT(7)) \| FIELD_PREP(BIT(7), (val))

Set to 1 if the SBC frame is fragmented, otherwise set to 0.

◆ BT_A2DP_SBC_MEDIA_HDR_L_GET

#define BT_A2DP_SBC_MEDIA_HDR_L_GET ( hdr ) FIELD_GET(BIT(5), (hdr))

Set to 1 for the last packet of a fragmented SBC frame, otherwise set to 0.

◆ BT_A2DP_SBC_MEDIA_HDR_L_SET

#define BT_A2DP_SBC_MEDIA_HDR_L_SET	(	hdr,
		val
	)	hdr = ((hdr) & ~BIT(5)) \| FIELD_PREP(BIT(5), (val))

Set to 1 for the last packet of a fragmented SBC frame, otherwise set to 0.

◆ BT_A2DP_SBC_MEDIA_HDR_NUM_FRAMES_GET

#define BT_A2DP_SBC_MEDIA_HDR_NUM_FRAMES_GET ( hdr ) FIELD_GET(GENMASK(3, 0), (hdr))

If the F bit is set to 0, this field indicates the number of frames contained in this packet.

If the F bit is set to 1, this field indicates the number of remaining fragments, including the current fragment. Therefore, the last counter value shall be one.

◆ BT_A2DP_SBC_MEDIA_HDR_NUM_FRAMES_SET

#define BT_A2DP_SBC_MEDIA_HDR_NUM_FRAMES_SET	(	hdr,
		val
	)	hdr = ((hdr) & ~GENMASK(3, 0)) \| FIELD_PREP(GENMASK(3, 0), (val))

If the F bit is set to 0, this field indicates the number of frames contained in this packet.

If the F bit is set to 1, this field indicates the number of remaining fragments, including the current fragment. Therefore, the last counter value shall be one.

◆ BT_A2DP_SBC_MEDIA_HDR_S_GET

#define BT_A2DP_SBC_MEDIA_HDR_S_GET ( hdr ) FIELD_GET(BIT(6), (hdr))

Set to 1 for the starting packet of a fragmented SBC frame, otherwise set to 0.

◆ BT_A2DP_SBC_MEDIA_HDR_S_SET

#define BT_A2DP_SBC_MEDIA_HDR_S_SET	(	hdr,
		val
	)	hdr = ((hdr) & ~BIT(6)) \| FIELD_PREP(BIT(6), (val))