spandsp 0.0.6
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Typedefs | |
typedef struct v18_state_s | v18_state_t |
Functions | |
logging_state_t * | v18_get_logging_state (v18_state_t *s) |
v18_state_t * | v18_init (v18_state_t *s, int calling_party, 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. | |
SPAN_DECLARE_NONSTD (int) v18_tx(v18_state_t *s | |
Generate a block of 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. |
Variables | |
int16_t | amp [] |
int16_t int | max_len |
const int16_t int | len |
SPAN_DECLARE_NONSTD | ( | int | ) |
Generate a block of V.18 audio samples.
Get the next bit of data from a T.38 rate adapting non-ECM buffer context.
Get a bit of received non-ECM image data.
Get the next bit of a transmitted serial bit stream.
Process a block of received 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. |
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_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 | calling_party, | ||
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. |
calling_party | 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. |
References ASYNC_PARITY_EVEN, ASYNC_PARITY_NONE, async_tx_init(), v18_state_s::calling_party, dtmf_rx_init(), dtmf_tx_init(), fsk_rx_init(), fsk_tx_init(), queue_init(), QUEUE_READ_ATOMIC, and QUEUE_WRITE_ATOMIC.
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. |
References queue_write().
int v18_release | ( | v18_state_t * | s | ) |
Release a V.18 context.
Release a V.18 context.
s | The V.18 context. |