spandsp 0.0.6
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#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
#include <assert.h>
#include "spandsp/telephony.h"
#include "spandsp/logging.h"
#include "spandsp/bit_operations.h"
#include "spandsp/async.h"
#include "spandsp/v42bis.h"
#include "spandsp/private/logging.h"
#include "spandsp/private/v42bis.h"
Enumerations | |
enum | { V42BIS_ETM = 0 , V42BIS_FLUSH = 1 , V42BIS_STEPUP = 2 } |
enum | { V42BIS_ECM = 0 , V42BIS_EID = 1 , V42BIS_RESET = 2 } |
Functions | |
int | v42bis_compress (v42bis_state_t *ss, const uint8_t buf[], int len) |
int | v42bis_compress_flush (v42bis_state_t *ss) |
int | v42bis_decompress (v42bis_state_t *ss, const uint8_t buf[], int len) |
int | v42bis_decompress_flush (v42bis_state_t *ss) |
void | v42bis_compression_control (v42bis_state_t *s, int mode) |
v42bis_state_t * | v42bis_init (v42bis_state_t *s, int negotiated_p0, int negotiated_p1, int negotiated_p2, put_msg_func_t encode_handler, void *encode_user_data, int max_encode_len, put_msg_func_t decode_handler, void *decode_user_data, int max_decode_len) |
int | v42bis_release (v42bis_state_t *s) |
int | v42bis_free (v42bis_state_t *s) |
int v42bis_compress | ( | v42bis_state_t * | s, |
const uint8_t | buf[], | ||
int | len ) |
Compress a block of octets.
s | The V.42bis context. |
buf | The data to be compressed. |
len | The length of the data buffer. |
References v42bis_state_s::compress, v42bis_comp_state_t::flushed_length, v42bis_comp_state_t::last_added, v42bis_comp_state_t::last_matched, v42bis_comp_state_t::string, v42bis_comp_state_t::string_length, v42bis_comp_state_t::update_at, v42bis_comp_state_t::v42bis_parm_n7, and v42bis_comp_state_t::v42bis_parm_p0.
int v42bis_compress_flush | ( | v42bis_state_t * | s | ) |
Flush out any data remaining in a compression buffer.
s | The V.42bis context. |
References v42bis_state_s::compress, v42bis_comp_state_t::flushed_length, v42bis_comp_state_t::last_matched, v42bis_comp_state_t::string_length, v42bis_comp_state_t::transparent, and v42bis_comp_state_t::update_at.
void v42bis_compression_control | ( | v42bis_state_t * | s, |
int | mode ) |
Set the compression mode.
s | The V.42bis context. |
mode | One of the V.42bis compression modes - V42BIS_COMPRESSION_MODE_DYNAMIC, V42BIS_COMPRESSION_MODE_ALWAYS, V42BIS_COMPRESSION_MODE_NEVER |
References v42bis_state_s::compress, and v42bis_comp_state_t::compression_mode.
int v42bis_decompress | ( | v42bis_state_t * | s, |
const uint8_t | buf[], | ||
int | len ) |
Decompress a block of octets.
s | The V.42bis context. |
buf | The data to be decompressed. |
len | The length of the data buffer. |
References v42bis_comp_state_t::bit_buffer, v42bis_comp_state_t::bit_count, v42bis_state_s::decompress, v42bis_comp_state_t::escape_code, v42bis_comp_state_t::escaped, v42bis_comp_state_t::flushed_length, v42bis_comp_state_t::last_added, v42bis_comp_state_t::last_matched, v42bis_state_s::logging, span_log(), v42bis_comp_state_t::string, v42bis_comp_state_t::string_length, v42bis_comp_state_t::transparent, v42bis_comp_state_t::update_at, v42bis_comp_state_t::v42bis_parm_c1, v42bis_comp_state_t::v42bis_parm_c2, v42bis_comp_state_t::v42bis_parm_c3, v42bis_comp_state_t::v42bis_parm_n2, v42bis_comp_state_t::v42bis_parm_n7, and v42bis_comp_state_t::v42bis_parm_p0.
int v42bis_decompress_flush | ( | v42bis_state_t * | s | ) |
Flush out any data remaining in the decompression buffer.
s | The V.42bis context. |
References v42bis_state_s::decompress, v42bis_comp_state_t::flushed_length, and v42bis_comp_state_t::string_length.
int v42bis_free | ( | v42bis_state_t * | s | ) |
Free a V.42bis context.
s | The V.42bis context. |
References v42bis_state_s::compress, and v42bis_state_s::decompress.
v42bis_state_t * v42bis_init | ( | v42bis_state_t * | s, |
int | negotiated_p0, | ||
int | negotiated_p1, | ||
int | negotiated_p2, | ||
put_msg_func_t | encode_handler, | ||
void * | encode_user_data, | ||
int | max_encode_len, | ||
put_msg_func_t | decode_handler, | ||
void * | decode_user_data, | ||
int | max_decode_len ) |
Initialise a V.42bis context.
s | The V.42bis context. |
negotiated_p0 | The negotiated P0 parameter, from the V.42bis spec. |
negotiated_p1 | The negotiated P1 parameter, from the V.42bis spec. |
negotiated_p2 | The negotiated P2 parameter, from the V.42bis spec. |
encode_handler | Encode callback handler. |
encode_user_data | An opaque pointer passed to the encode callback handler. |
max_encode_len | The maximum length that should be passed to the encode handler. |
decode_handler | Decode callback handler. |
decode_user_data | An opaque pointer passed to the decode callback handler. |
max_decode_len | The maximum length that should be passed to the decode handler. |
References v42bis_state_s::compress, v42bis_state_s::decompress, v42bis_state_s::logging, and v42bis_comp_state_t::v42bis_parm_p0.
int v42bis_release | ( | v42bis_state_t * | s | ) |
Release a V.42bis context.
s | The V.42bis context. |