probe_dma_frame.h File Reference

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Data Structures
struct	probe_data_packet
	Header for data packets sent via compressed PCM from extraction probes. More...

Macros
#define	PROBE_EXTRACT_SYNC_WORD   0xBABEBEBA
#define	PROBE_SHIFT_FMT_TYPE   31
	Definitions of shifts and masks for format encoding in probe extraction stream.
#define	PROBE_SHIFT_STANDARD_TYPE   27
#define	PROBE_SHIFT_AUDIO_FMT   23
#define	PROBE_SHIFT_SAMPLE_RATE   19
#define	PROBE_SHIFT_NB_CHANNELS   14
#define	PROBE_SHIFT_SAMPLE_SIZE   12
#define	PROBE_SHIFT_CONTAINER_SIZE   10
#define	PROBE_SHIFT_SAMPLE_FMT   9
#define	PROBE_SHIFT_SAMPLE_END   8
#define	PROBE_SHIFT_INTERLEAVING_ST   7
#define	PROBE_MASK_FMT_TYPE   MASK(31, 31)
#define	PROBE_MASK_STANDARD_TYPE   MASK(30, 27)
#define	PROBE_MASK_AUDIO_FMT   MASK(26, 23)
#define	PROBE_MASK_SAMPLE_RATE   MASK(22, 19)
#define	PROBE_MASK_NB_CHANNELS   MASK(18, 14)
#define	PROBE_MASK_SAMPLE_SIZE   MASK(13, 12)
#define	PROBE_MASK_CONTAINER_SIZE   MASK(11, 10)
#define	PROBE_MASK_SAMPLE_FMT   MASK(9, 9)
#define	PROBE_MASK_SAMPLE_END   MASK(8, 8)
#define	PROBE_MASK_INTERLEAVING_ST   MASK(7, 7)

Macro Definition Documentation

PROBE_EXTRACT_SYNC_WORD

#define PROBE_EXTRACT_SYNC_WORD   0xBABEBEBA

PROBE_MASK_AUDIO_FMT

#define PROBE_MASK_AUDIO_FMT   MASK(26, 23)

PROBE_MASK_CONTAINER_SIZE

#define PROBE_MASK_CONTAINER_SIZE   MASK(11, 10)

PROBE_MASK_FMT_TYPE

#define PROBE_MASK_FMT_TYPE   MASK(31, 31)

PROBE_MASK_INTERLEAVING_ST

#define PROBE_MASK_INTERLEAVING_ST   MASK(7, 7)

PROBE_MASK_NB_CHANNELS

#define PROBE_MASK_NB_CHANNELS   MASK(18, 14)

PROBE_MASK_SAMPLE_END

#define PROBE_MASK_SAMPLE_END   MASK(8, 8)

PROBE_MASK_SAMPLE_FMT

#define PROBE_MASK_SAMPLE_FMT   MASK(9, 9)

PROBE_MASK_SAMPLE_RATE

#define PROBE_MASK_SAMPLE_RATE   MASK(22, 19)

PROBE_MASK_SAMPLE_SIZE

#define PROBE_MASK_SAMPLE_SIZE   MASK(13, 12)

PROBE_MASK_STANDARD_TYPE

#define PROBE_MASK_STANDARD_TYPE   MASK(30, 27)

PROBE_SHIFT_AUDIO_FMT

#define PROBE_SHIFT_AUDIO_FMT   23

PROBE_SHIFT_CONTAINER_SIZE

#define PROBE_SHIFT_CONTAINER_SIZE   10

PROBE_SHIFT_FMT_TYPE

#define PROBE_SHIFT_FMT_TYPE   31

Definitions of shifts and masks for format encoding in probe extraction stream.

Audio format from extraction probes is encoded as 32 bit value. Following graphic explains encoding.

A|BBBB|CCCC|DDDD|EEEEE|FF|GG|H|I|J|XXXXXXX A - 1 bit - Specifies Type Encoding - 1 for Standard encoding B - 4 bits - Specify Standard Type - 0 for Audio C - 4 bits - Specify Audio format - 0 for PCM D - 4 bits - Specify Sample Rate - value enumerating standard sample rates: 8000 Hz = 0x0 11025 Hz = 0x1 12000 Hz = 0x2 16000 Hz = 0x3 22050 Hz = 0x4 24000 Hz = 0x5 32000 Hz = 0x6 44100 Hz = 0x7 48000 Hz = 0x8 64000 Hz = 0x9 88200 Hz = 0xA 96000 Hz = 0xB 128000 Hz = 0xC 176400 Hz = 0xD 192000 Hz = 0xE none of the above = 0xF E - 5 bits - Specify Number of Channels minus 1 F - 2 bits - Specify Sample Size, number of valid sample bytes minus 1 G - 2 bits - Specify Container Size, number of container bytes minus 1 H - 1 bit - Specifies Sample Format - 0 for Integer, 1 for Floating point I - 1 bit - Specifies Sample Endianness - 0 for LE J - 1 bit - Specifies Interleaving - 1 for Sample Interleaving

PROBE_SHIFT_INTERLEAVING_ST

#define PROBE_SHIFT_INTERLEAVING_ST   7

PROBE_SHIFT_NB_CHANNELS

#define PROBE_SHIFT_NB_CHANNELS   14

PROBE_SHIFT_SAMPLE_END

#define PROBE_SHIFT_SAMPLE_END   8

PROBE_SHIFT_SAMPLE_FMT

#define PROBE_SHIFT_SAMPLE_FMT   9

PROBE_SHIFT_SAMPLE_RATE

#define PROBE_SHIFT_SAMPLE_RATE   19

PROBE_SHIFT_SAMPLE_SIZE

#define PROBE_SHIFT_SAMPLE_SIZE   12

PROBE_SHIFT_STANDARD_TYPE

#define PROBE_SHIFT_STANDARD_TYPE   27