spandsp
3.0.0
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Macros | |
#define | T38_NON_ECM_TX_BUF_LEN 16384 |
Typedefs | |
typedef struct t38_non_ecm_buffer_state_s | t38_non_ecm_buffer_state_t |
A flow controlled non-ECM image data buffer, for buffering T.38 to analogue modem data. | |
Functions | |
t38_non_ecm_buffer_state_t * | t38_non_ecm_buffer_init (t38_non_ecm_buffer_state_t *s, bool image_mode, int min_row_bits) |
Initialise a T.38 rate adapting non-ECM buffer context. More... | |
int | t38_non_ecm_buffer_release (t38_non_ecm_buffer_state_t *s) |
int | t38_non_ecm_buffer_free (t38_non_ecm_buffer_state_t *s) |
void | t38_non_ecm_buffer_set_mode (t38_non_ecm_buffer_state_t *s, bool image_mode, int min_row_bits) |
Set the mode of a T.38 rate adapting non-ECM buffer context. More... | |
void | t38_non_ecm_buffer_inject (t38_non_ecm_buffer_state_t *s, const uint8_t *buf, int len) |
Inject data to T.38 rate adapting non-ECM buffer context. More... | |
void | t38_non_ecm_buffer_push (t38_non_ecm_buffer_state_t *s) |
Inform a T.38 rate adapting non-ECM buffer context that the incoming data has finished, and the contents of the buffer should be played out as quickly as possible. More... | |
void | t38_non_ecm_buffer_report_input_status (t38_non_ecm_buffer_state_t *s, logging_state_t *logging) |
Report the input status of a T.38 rate adapting non-ECM buffer context to the specified logging context. More... | |
void | t38_non_ecm_buffer_report_output_status (t38_non_ecm_buffer_state_t *s, logging_state_t *logging) |
Report the output status of a T.38 rate adapting non-ECM buffer context to the specified logging context. More... | |
int | t38_non_ecm_buffer_get_bit (void *user_data) |
Get the next bit of data from a T.38 rate adapting non-ECM buffer context. More... | |
#define T38_NON_ECM_TX_BUF_LEN 16384 |
The buffer length much be a power of two. The chosen length is big enough for over 9s of data at the V.17 14,400bps rate.
Referenced by t38_non_ecm_buffer_get_bit().
int t38_non_ecm_buffer_get_bit | ( | void * | user_data | ) |
Get the next bit of data from a T.38 rate adapting non-ECM buffer context.
user_data | The buffer context, cast to a void pointer. |
References t38_non_ecm_buffer_state_s::bit_no, t38_non_ecm_buffer_state_s::data, t38_non_ecm_buffer_state_s::data_finished, t38_non_ecm_buffer_state_s::latest_eol_ptr, t38_non_ecm_buffer_state_s::octet, t38_non_ecm_buffer_state_s::out_ptr, and T38_NON_ECM_TX_BUF_LEN.
t38_non_ecm_buffer_state_t* t38_non_ecm_buffer_init | ( | t38_non_ecm_buffer_state_t * | s, |
bool | image_mode, | ||
int | min_row_bits | ||
) |
Initialise a T.38 rate adapting non-ECM buffer context.
s | The buffer context. |
image_mode | True for image data mode, or false for TCF mode. |
bits | The minimum number of bits per FAX image row. |
void t38_non_ecm_buffer_inject | ( | t38_non_ecm_buffer_state_t * | s, |
const uint8_t * | buf, | ||
int | len | ||
) |
Inject data to T.38 rate adapting non-ECM buffer context.
s | The buffer context. |
buf | The data buffer to be injected. |
len | The length of the data to be injected. |
void t38_non_ecm_buffer_push | ( | t38_non_ecm_buffer_state_t * | s | ) |
Inform a T.38 rate adapting non-ECM buffer context that the incoming data has finished, and the contents of the buffer should be played out as quickly as possible.
s | The buffer context. |
References t38_non_ecm_buffer_state_s::data_finished, t38_non_ecm_buffer_state_s::in_ptr, and t38_non_ecm_buffer_state_s::latest_eol_ptr.
void t38_non_ecm_buffer_report_input_status | ( | t38_non_ecm_buffer_state_t * | s, |
logging_state_t * | logging | ||
) |
Report the input status of a T.38 rate adapting non-ECM buffer context to the specified logging context.
s | The buffer context. |
logging | The logging context. |
References t38_non_ecm_buffer_state_s::in_octets, t38_non_ecm_buffer_state_s::min_row_bits_fill_octets, and span_log().
void t38_non_ecm_buffer_report_output_status | ( | t38_non_ecm_buffer_state_t * | s, |
logging_state_t * | logging | ||
) |
Report the output status of a T.38 rate adapting non-ECM buffer context to the specified logging context.
s | The buffer context. |
logging | The logging context. |
References t38_non_ecm_buffer_state_s::flow_control_fill_octets, t38_non_ecm_buffer_state_s::out_octets, and span_log().
void t38_non_ecm_buffer_set_mode | ( | t38_non_ecm_buffer_state_t * | s, |
bool | image_mode, | ||
int | min_row_bits | ||
) |
Set the mode of a T.38 rate adapting non-ECM buffer context.
s | The buffer context. |
mode | True for image data mode, or false for TCF mode. |
bits | The minimum number of bits per FAX image row. |
References t38_non_ecm_buffer_state_s::image_data_mode, and t38_non_ecm_buffer_state_s::min_bits_per_row.