rohc_bit_ops.h File Reference

Bitwised operations for ROHC compression/decompression. More...

#include "config.h"

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Defines
#define	GET_BIT_0(x)   ((*(x)) & 0x01)
#define	GET_BIT_1(x)   ((*(x)) & 0x02)
#define	GET_BIT_2(x)   ((*(x)) & 0x04)
#define	GET_BIT_3(x)   ((*(x)) & 0x08)
#define	GET_BIT_4(x)   ((*(x)) & 0x10)
#define	GET_BIT_5(x)   ((*(x)) & 0x20)
#define	GET_BIT_6(x)   ((*(x)) & 0x40)
#define	GET_BIT_7(x)   ((*(x)) & 0x80)
#define	GET_BIT_0_2(x)   ((*(x)) & 0x07)
#define	GET_BIT_0_4(x)   ((*(x)) & 0x1f)
#define	GET_BIT_0_3(x)   ((*(x)) & 0x0f)
#define	GET_BIT_0_5(x)   ((*(x)) & 0x3f)
#define	GET_BIT_0_6(x)   ((*(x)) & 0x7f)
#define	GET_BIT_0_7(x)   ((*(x)) & 0xff)
#define	GET_BIT_1_7(x)   ( ((*(x)) & 0xfe) >> 1 )
#define	GET_BIT_3_4(x)   ( ((*(x)) & 0x18) >> 3 )
#define	GET_BIT_3_5(x)   ( ((*(x)) & 0x38) >> 3 )
#define	GET_BIT_3_6(x)   ( ((*(x)) & 0x78) >> 3 )
#define	GET_BIT_3_7(x)   ( ((*(x)) & 0xf8) >> 3 )
#define	GET_BIT_4_7(x)   ( ((*(x)) & 0xf0) >> 4 )
#define	GET_BIT_5_7(x)   ( ((*(x)) & 0xe0) >> 5 )
#define	GET_BIT_6_7(x)   ( ((*(x)) & 0xc0) >> 6 )
#define	GET_BIT_4_6(x)   ( ((*(x)) & 0x70) >> 4 )
#define	GET_REAL(x)   ((x) ? 1 : 0)
	Convert GET_BIT_* values to 0 or 1.
#define	GET_BOOL(x)   ((x) ? true : false)
	Convert GET_BIT_* values to boolean.
#define	GET_NEXT_16_BITS(x)   ((((*((x) + 1)) << 8) & 0xff00) | ((*(x)) & 0x00ff))
	Get the next 16 bits at the given memory location in Network Byte Order.

---

Detailed Description

Bitwised operations for ROHC compression/decompression.

Author:

Didier Barvaux <didier.barvaux@toulouse.viveris.com>

The hackers from ROHC for Linux

Didier Barvaux <didier@barvaux.org>

---

Define Documentation

#define GET_BIT_0

(

x

)

((*(x)) & 0x01)

#define GET_BIT_0_2

(

x

)

((*(x)) & 0x07)

Referenced by d_feedback_headersize(), and d_feedback_size().

#define GET_BIT_0_3

(

x

)

((*(x)) & 0x0f)

Referenced by d_decode_add_cid().

#define GET_BIT_0_4

(

x

)

((*(x)) & 0x1f)

Referenced by sdvl_decode().

#define GET_BIT_0_5

(

x

)

((*(x)) & 0x3f)

Referenced by sdvl_decode().

#define GET_BIT_0_6

(

x

)

((*(x)) & 0x7f)

Referenced by sdvl_decode().

#define GET_BIT_0_7

(

x

)

((*(x)) & 0xff)

Referenced by d_feedback_size(), d_is_irdyn(), d_is_padding(), and sdvl_decode().

#define GET_BIT_1

(

x

)

((*(x)) & 0x02)

#define GET_BIT_1_7

(

x

)

( ((*(x)) & 0xfe) >> 1 )

Referenced by d_is_ir(), and d_is_segment().

#define GET_BIT_2

(

x

)

((*(x)) & 0x04)

#define GET_BIT_3

(

x

)

((*(x)) & 0x08)

#define GET_BIT_3_4

(

x

)

( ((*(x)) & 0x18) >> 3 )

#define GET_BIT_3_5

(

x

)

( ((*(x)) & 0x38) >> 3 )

#define GET_BIT_3_6

(

x

)

( ((*(x)) & 0x78) >> 3 )

#define GET_BIT_3_7

(

x

)

( ((*(x)) & 0xf8) >> 3 )

Referenced by d_is_feedback().

#define GET_BIT_4

(

x

)

((*(x)) & 0x10)

#define GET_BIT_4_6

(

x

)

( ((*(x)) & 0x70) >> 4 )

#define GET_BIT_4_7

(

x

)

( ((*(x)) & 0xf0) >> 4 )

Referenced by d_is_add_cid().

#define GET_BIT_5

(

x

)

((*(x)) & 0x20)

#define GET_BIT_5_7

(

x

)

( ((*(x)) & 0xe0) >> 5 )

Referenced by d_is_uor2(), d_sdvalue_size(), and sdvl_decode().

#define GET_BIT_6

(

x

)

((*(x)) & 0x40)

Referenced by d_is_uor2_rtp().

#define GET_BIT_6_7

(

x

)

( ((*(x)) & 0xc0) >> 6 )

Referenced by d_is_uo1(), d_sdvalue_size(), and sdvl_decode().

#define GET_BIT_7

(

x

)

((*(x)) & 0x80)

Referenced by d_is_uo0(), d_is_uor2_ts(), d_sdvalue_size(), and sdvl_decode().

#define GET_BOOL

(

x

)

((x) ? true : false)

Convert GET_BIT_* values to boolean.

example: GET_BOOL(GET_BIT_5(data_ptr));

#define GET_NEXT_16_BITS

(

x

)

((((*((x) + 1)) << 8) & 0xff00) | ((*(x)) & 0x00ff))

Get the next 16 bits at the given memory location in Network Byte Order.

Referenced by ip_parse_dynamic_ip(), and udp_parse_static_udp().

#define GET_REAL

(

x

)

((x) ? 1 : 0)

Convert GET_BIT_* values to 0 or 1.

example: GET_REAL(GET_BIT_5(data_ptr));