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Typedefs | |
typedef struct v18_state_s | v18_state_t |
Enumerations | |
enum | { V18_MODE_NONE = 0, V18_MODE_5BIT_45 = 1, V18_MODE_5BIT_50 = 2, V18_MODE_DTMF = 3, V18_MODE_EDT = 4, V18_MODE_BELL103 = 5, V18_MODE_V23VIDEOTEX = 6, V18_MODE_V21TEXTPHONE = 7, V18_MODE_V18TEXTPHONE = 8 } |
Functions | |
logging_state_t * | v18_get_logging_state (v18_state_t *s) |
v18_state_t * | v18_init (v18_state_t *s, int caller, int mode, put_msg_func_t put_msg, void *user_data) |
Initialise a V.18 context. | |
int | v18_release (v18_state_t *s) |
Release a V.18 context. | |
int | v18_free (v18_state_t *s) |
Release a V.18 context. | |
int | v18_tx (v18_state_t *s, int16_t amp[], int max_len) |
Generate a block of V.18 audio samples. | |
int | v18_rx (v18_state_t *s, const int16_t amp[], int len) |
Process a block of received V.18 audio samples. | |
int | v18_put (v18_state_t *s, const char msg[], int len) |
Put a string to a V.18 context's input buffer. | |
int | v18_encode_dtmf (v18_state_t *s, char dtmf[], const char msg[]) |
Convert a text string to a V.18 DTMF string. | |
int | v18_decode_dtmf (v18_state_t *s, char msg[], const char dtmf[]) |
Convert a V.18 DTMF string to a text string. | |
uint16_t | v18_encode_baudot (v18_state_t *s, uint8_t ch) |
uint8_t | v18_decode_baudot (v18_state_t *s, uint8_t ch) |
const char * | v18_mode_to_str (int mode) |
Return a short name for an V.18 mode. |
int v18_decode_dtmf | ( | v18_state_t * | s, | |
char | msg[], | |||
const char | dtmf[] | |||
) |
Convert a V.18 DTMF string to a text string.
Convert a V.18 DTMF string to a text string.
s | The V.18 context. | |
msg | The resulting test string. | |
dtmf | The DTMF string to be converted. |
int v18_encode_dtmf | ( | v18_state_t * | s, | |
char | dtmf[], | |||
const char | msg[] | |||
) |
Convert a text string to a V.18 DTMF string.
Convert a text string to a V.18 DTMF string.
s | The V.18 context. | |
dtmf | The resulting DTMF string. | |
msg | The text string to be converted. |
int v18_free | ( | v18_state_t * | s | ) |
Release a V.18 context.
Free a V.18 context.
s | The V.18 context. |
v18_state_t* v18_init | ( | v18_state_t * | s, | |
int | caller, | |||
int | mode, | |||
put_msg_func_t | put_msg, | |||
void * | user_data | |||
) |
Initialise a V.18 context.
Initialise a V.18 context.
s | The V.18 context. | |
caller | TRUE if caller mode, else answerer mode. | |
mode | Mode of operation. | |
put_msg | A callback routine called to deliver the received text to the application. | |
user_data | An opaque pointer for the callback routine. |
const char* v18_mode_to_str | ( | int | mode | ) |
Return a short name for an V.18 mode.
mode | The code for the V.18 mode. |
int v18_put | ( | v18_state_t * | s, | |
const char | msg[], | |||
int | len | |||
) |
Put a string to a V.18 context's input buffer.
s | The V.18 context. | |
msg | The string to be added. | |
len | The length of the string. If negative, the string is assumed to be a NULL terminated string. |
int v18_release | ( | v18_state_t * | s | ) |
Release a V.18 context.
Release a V.18 context.
s | The V.18 context. |
int v18_rx | ( | v18_state_t * | s, | |
const int16_t | amp[], | |||
int | len | |||
) |
Process a block of received V.18 audio samples.
Process a block of received V.18 audio samples.
s | The V.18 context. | |
amp | The audio sample buffer. | |
len | The number of samples in the buffer. |
int v18_tx | ( | v18_state_t * | s, | |
int16_t | amp[], | |||
int | max_len | |||
) |
Generate a block of V.18 audio samples.
Generate a block of V.18 audio samples.
s | The V.18 context. | |
amp | The audio sample buffer. | |
max_len | The number of samples to be generated. |