gsm0503_amr_dtx.c File Reference

#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <osmocom/core/bits.h>
#include <osmocom/core/conv.h>
#include <osmocom/core/utils.h>
#include <osmocom/coding/gsm0503_amr_dtx.h>
#include <osmocom/coding/gsm0503_parity.h>
#include <osmocom/gsm/gsm0503.h>

Macros
#define	S2U(b)   ((b) < 0)

Functions
static bool	detect_afs_id_marker (int *n_errors, int *n_bits_total, const sbit_t *sbits, uint8_t offset, uint8_t count, const ubit_t *id_marker, uint8_t id_marker_len)
static bool	detect_ahs_id_marker (int *n_errors, int *n_bits_total, const sbit_t *sbits, const ubit_t *id_marker)
static bool	detect_interleaved_ahs_id_marker (int *n_errors, int *n_bits_total, const sbit_t *sbits, uint8_t offset, uint8_t n_bits, const ubit_t *id_marker, uint8_t id_marker_len)
static bool	detect_afs_sid_first (int *n_errors, int *n_bits_total, const sbit_t *sbits)
static bool	detect_afs_sid_update (int *n_errors, int *n_bits_total, const sbit_t *sbits)
static int	detect_afs_onset (int *n_errors, int *n_bits_total, const sbit_t *sbits)
static bool	detect_ahs_sid_update (int *n_errors, int *n_bits_total, const sbit_t *sbits)
static bool	detect_ahs_sid_first_p1 (int *n_errors, int *n_bits_total, const sbit_t *sbits)
static int	detect_ahs_sid_first_p2 (int *n_errors, int *n_bits_total, const sbit_t *sbits)
static int	detect_ahs_onset (int *n_errors, int *n_bits_total, const sbit_t *sbits)
static bool	detect_ahs_sid_first_inh (int *n_errors, int *n_bits_total, const sbit_t *sbits)
static bool	detect_ahs_sid_update_inh (int *n_errors, int *n_bits_total, const sbit_t *sbits)
enum gsm0503_amr_dtx_frames	gsm0503_detect_afs_dtx_frame2 (int *n_errors, int *n_bits_total, int *mode_id, const sbit_t *sbits)
	Detect FR AMR DTX frame in unmapped, deinterleaved frame bits. More...
enum gsm0503_amr_dtx_frames	gsm0503_detect_afs_dtx_frame (int *n_errors, int *n_bits_total, const ubit_t *ubits)
	Detect FR AMR DTX frame in unmapped, deinterleaved frame bits. More...
enum gsm0503_amr_dtx_frames	gsm0503_detect_ahs_dtx_frame2 (int *n_errors, int *n_bits_total, int *mode_id, const sbit_t *sbits)
	Detect HR AMR DTX frame in unmapped, deinterleaved frame bits. More...
enum gsm0503_amr_dtx_frames	gsm0503_detect_ahs_dtx_frame (int *n_errors, int *n_bits_total, const ubit_t *ubits)
	Detect HR AMR DTX frame in unmapped, deinterleaved frame bits. More...

Variables
static const ubit_t	id_marker_1 [] = { 1, 0, 1, 1, 0, 0, 0, 0, 1 }
static const ubit_t	id_marker_0 [] = { 0, 1, 0, 0, 1, 1, 1, 1, 0 }
static const ubit_t	codec_mode_1_sid [] = { 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0 }
static const ubit_t	codec_mode_2_sid [] = { 0, 0, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0 }
static const ubit_t	codec_mode_3_sid [] = { 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1 }
static const ubit_t	codec_mode_4_sid [] = { 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 1, 1, 1 }
const struct value_string	gsm0503_amr_dtx_frame_names []

Macro Definition Documentation

S2U

#define S2U

(

b

)

((b) < 0)

Function Documentation

detect_afs_id_marker()

static bool detect_afs_id_marker ( int *  n_errors, int *  n_bits_total, const sbit_t *  sbits, uint8_t  offset, uint8_t  count, const ubit_t *  id_marker, uint8_t  id_marker_len  )

static

References k, and S2U.

Referenced by detect_afs_onset(), detect_afs_sid_first(), and detect_afs_sid_update().

detect_afs_onset()

static int detect_afs_onset ( int *  n_errors, int *  n_bits_total, const sbit_t *  sbits  )

static

References codec_mode_1_sid, codec_mode_2_sid, codec_mode_3_sid, codec_mode_4_sid, and detect_afs_id_marker().

Referenced by gsm0503_detect_afs_dtx_frame2().

detect_afs_sid_first()

static bool detect_afs_sid_first ( int *  n_errors, int *  n_bits_total, const sbit_t *  sbits  )

static

References detect_afs_id_marker(), and id_marker_0.

Referenced by gsm0503_detect_afs_dtx_frame2().

detect_afs_sid_update()

static bool detect_afs_sid_update ( int *  n_errors, int *  n_bits_total, const sbit_t *  sbits  )

static

References detect_afs_id_marker(), and id_marker_0.

Referenced by gsm0503_detect_afs_dtx_frame2().

detect_ahs_id_marker()

static bool detect_ahs_id_marker ( int *  n_errors, int *  n_bits_total, const sbit_t *  sbits, const ubit_t *  id_marker  )

static

References k, and S2U.

Referenced by detect_ahs_sid_first_p1(), and detect_ahs_sid_update().

detect_ahs_onset()

static int detect_ahs_onset ( int *  n_errors, int *  n_bits_total, const sbit_t *  sbits  )

static

References codec_mode_1_sid, codec_mode_2_sid, codec_mode_3_sid, codec_mode_4_sid, and detect_interleaved_ahs_id_marker().

Referenced by gsm0503_detect_ahs_dtx_frame2().

detect_ahs_sid_first_inh()

static bool detect_ahs_sid_first_inh ( int *  n_errors, int *  n_bits_total, const sbit_t *  sbits  )

static

References detect_interleaved_ahs_id_marker(), and id_marker_1.

Referenced by gsm0503_detect_ahs_dtx_frame2().

detect_ahs_sid_first_p1()

static bool detect_ahs_sid_first_p1 ( int *  n_errors, int *  n_bits_total, const sbit_t *  sbits  )

static

References detect_ahs_id_marker(), and id_marker_0.

Referenced by gsm0503_detect_ahs_dtx_frame2().

detect_ahs_sid_first_p2()

static int detect_ahs_sid_first_p2 ( int *  n_errors, int *  n_bits_total, const sbit_t *  sbits  )

static

References codec_mode_1_sid, codec_mode_2_sid, codec_mode_3_sid, codec_mode_4_sid, and detect_interleaved_ahs_id_marker().

Referenced by gsm0503_detect_ahs_dtx_frame2().

detect_ahs_sid_update()

static bool detect_ahs_sid_update ( int *  n_errors, int *  n_bits_total, const sbit_t *  sbits  )

static

References detect_ahs_id_marker(), and id_marker_1.

Referenced by gsm0503_detect_ahs_dtx_frame2().

detect_ahs_sid_update_inh()

static bool detect_ahs_sid_update_inh ( int *  n_errors, int *  n_bits_total, const sbit_t *  sbits  )

static

References detect_interleaved_ahs_id_marker(), and id_marker_0.

Referenced by gsm0503_detect_ahs_dtx_frame2().

detect_interleaved_ahs_id_marker()

static bool detect_interleaved_ahs_id_marker ( int *  n_errors, int *  n_bits_total, const sbit_t *  sbits, uint8_t  offset, uint8_t  n_bits, const ubit_t *  id_marker, uint8_t  id_marker_len  )

static

References k, and S2U.

Referenced by detect_ahs_onset(), detect_ahs_sid_first_inh(), detect_ahs_sid_first_p2(), and detect_ahs_sid_update_inh().

Variable Documentation

codec_mode_1_sid

const ubit_t codec_mode_1_sid[] = { 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0 }

static

Referenced by detect_afs_onset(), detect_ahs_onset(), and detect_ahs_sid_first_p2().

codec_mode_2_sid

const ubit_t codec_mode_2_sid[] = { 0, 0, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0 }

static

Referenced by detect_afs_onset(), detect_ahs_onset(), and detect_ahs_sid_first_p2().

codec_mode_3_sid

const ubit_t codec_mode_3_sid[] = { 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1 }

static

Referenced by detect_afs_onset(), detect_ahs_onset(), and detect_ahs_sid_first_p2().

codec_mode_4_sid

const ubit_t codec_mode_4_sid[] = { 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 1, 1, 1 }

static

Referenced by detect_afs_onset(), detect_ahs_onset(), and detect_ahs_sid_first_p2().

id_marker_0

const ubit_t id_marker_0[] = { 0, 1, 0, 0, 1, 1, 1, 1, 0 }

static

Referenced by detect_afs_sid_first(), detect_afs_sid_update(), detect_ahs_sid_first_p1(), and detect_ahs_sid_update_inh().

id_marker_1

const ubit_t id_marker_1[] = { 1, 0, 1, 1, 0, 0, 0, 0, 1 }

static

Referenced by detect_ahs_sid_first_inh(), and detect_ahs_sid_update().