wiced_bt_a2d_sbc.h File Reference

Low complexity subband codec (SBC) A2DP Application Programming Interface. More...

Data Structures
struct	wiced_bt_a2d_sbc_cie_t
	data type for the SBC Codec Information Element More...

Macros
#define	A2D_SBC_MPL_HDR_LEN   1
	the length of the SBC Media Payload header. More...
#define	A2D_SBC_INFO_LEN   6
	the LOSC of SBC media codec capabilitiy
#define	A2D_SBC_IE_MIN_BITPOOL   2
	Min Bitpool Value.
#define	A2D_SBC_IE_MAX_BITPOOL   250
	Max Bitpool Value.
#define	A2D_SBC_HDR_F_MSK   0x80
	SBC Fragmented packet mask.
#define	A2D_SBC_HDR_S_MSK   0x40
	SBC starting packet mask.
#define	A2D_SBC_HDR_L_MSK   0x20
	SBC last packet mask.
#define	A2D_SBC_HDR_NUM_MSK   0x0F
	SBC number of frame mask.
SBC Sampling Frequency.
#define	A2D_SBC_IE_SAMP_FREQ_MSK   0xF0
	b7-b4 sampling frequency
#define	A2D_SBC_IE_SAMP_FREQ_16   0x80
	b7:16 kHz
#define	A2D_SBC_IE_SAMP_FREQ_32   0x40
	b6:32 kHz
#define	A2D_SBC_IE_SAMP_FREQ_44   0x20
	b5:44.1kHz
#define	A2D_SBC_IE_SAMP_FREQ_48   0x10
	b4:48 kHz
SBC Channel Mode.
#define	A2D_SBC_IE_CH_MD_MSK   0x0F
	b3-b0 channel mode
#define	A2D_SBC_IE_CH_MD_MONO   0x08
	b3: mono
#define	A2D_SBC_IE_CH_MD_DUAL   0x04
	b2: dual
#define	A2D_SBC_IE_CH_MD_STEREO   0x02
	b1: stereo
#define	A2D_SBC_IE_CH_MD_JOINT   0x01
	b0: joint stereo
SBC Block Length.
#define	A2D_SBC_IE_BLOCKS_MSK   0xF0
	b7-b4 number of blocks
#define	A2D_SBC_IE_BLOCKS_4   0x80
	4 blocks
#define	A2D_SBC_IE_BLOCKS_8   0x40
	8 blocks
#define	A2D_SBC_IE_BLOCKS_12   0x20
	12blocks
#define	A2D_SBC_IE_BLOCKS_16   0x10
	16blocks
SBC Subband Number.
#define	A2D_SBC_IE_SUBBAND_MSK   0x0C
	b3-b2 number of subbands
#define	A2D_SBC_IE_SUBBAND_4   0x08
	b3: 4
#define	A2D_SBC_IE_SUBBAND_8   0x04
	b2: 8
SBC Allocation Method.
#define	A2D_SBC_IE_ALLOC_MD_MSK   0x03
	b1-b0 allocation mode
#define	A2D_SBC_IE_ALLOC_MD_S   0x02
	b1: SNR
#define	A2D_SBC_IE_ALLOC_MD_L   0x01
	b0: loundess

Functions
void	wiced_bt_a2d_sbc_chk_fr_init (uint8_t *p_pkt)
	Check if control block descrambling needs to be initiated. More...
void	wiced_bt_a2d_sbc_descramble (uint8_t *p_pkt, uint16_t len)
	Descramble packet. More...
wiced_bt_a2d_status_t	wiced_bt_a2d_bld_sbc_info (uint8_t media_type, const wiced_bt_a2d_sbc_cie_t *p_ie, uint8_t *p_result)
	Build SBC Media Codec Capabilities byte sequence (beginning from the LOSC octet) More...
wiced_bt_a2d_status_t	wiced_bt_a2d_pars_sbc_info (wiced_bt_a2d_sbc_cie_t *p_ie, uint8_t *p_info, wiced_bool_t for_caps)
	Parse SBC Media Codec Capabilities byte sequence (beginning from the LOSC octet) More...
void	wiced_bt_a2d_bld_sbc_mpl_hdr (uint8_t *p_dst, wiced_bool_t frag, wiced_bool_t start, wiced_bool_t last, uint8_t num)
	Build SBC Media Payload header. More...
void	wiced_bt_a2d_pars_sbc_mpl_hdr (uint8_t *p_src, wiced_bool_t *p_frag, wiced_bool_t *p_start, wiced_bool_t *p_last, uint8_t *p_num)
	Parse SBC Media Payload header. More...

Detailed Description

Low complexity subband codec (SBC) A2DP Application Programming Interface.