28#if !defined(_SPANDSP_PRIVATE_T38_GATEWAY_H_)
29#define _SPANDSP_PRIVATE_T38_GATEWAY_H_
32#define T38_TX_HDLC_BUFS 256
34#define T38_MAX_HDLC_LEN 260
36#define T38_RX_BUF_LEN 2048
struct fax_modems_state_s fax_modems_state_t
Definition fax_modems.h:59
struct logging_state_s logging_state_t
Definition logging.h:72
#define T38_TX_HDLC_BUFS
Definition private/t38_gateway.h:32
#define T38_RX_BUF_LEN
Definition private/t38_gateway.h:36
#define T38_MAX_HDLC_LEN
Definition private/t38_gateway.h:34
Definition private/t38_gateway.h:70
fax_modems_state_t modems
The FAX modem set for the audio side fo the gateway.
Definition private/t38_gateway.h:72
Definition private/t38_gateway.h:138
t38_gateway_to_t38_state_t to_t38
Definition private/t38_gateway.h:175
bool ecm_mode
True if we are in error correcting (ECM) mode.
Definition private/t38_gateway.h:161
bool short_train
True if in image data modem is to use short training. This usually follows image_data_mode,...
Definition private/t38_gateway.h:149
t38_non_ecm_buffer_state_t non_ecm_to_modem
Definition private/t38_gateway.h:179
int timed_mode
The current timed operation.
Definition private/t38_gateway.h:170
bool image_data_mode
True if in image data mode, as opposed to TCF mode.
Definition private/t38_gateway.h:151
bool count_page_on_mcf
True if we should count the next MCF as a page end, else false.
Definition private/t38_gateway.h:156
t38_gateway_hdlc_state_t hdlc_to_modem
Definition private/t38_gateway.h:177
int fast_bit_rate
The current bit rate for the fast modem.
Definition private/t38_gateway.h:163
int min_row_bits
The minimum permitted bits per FAX scan line row.
Definition private/t38_gateway.h:153
int fast_rx_active
The type of fast receive modem currently active, which may be T38_NONE.
Definition private/t38_gateway.h:167
bool ecm_allowed
True if ECM FAX mode is allowed through the gateway.
Definition private/t38_gateway.h:142
int fast_rx_modem
The current fast receive modem type.
Definition private/t38_gateway.h:165
void * real_time_frame_user_data
An opaque pointer supplied in real time frame callbacks.
Definition private/t38_gateway.h:185
int samples_to_timeout
The number of samples until the next timeout event.
Definition private/t38_gateway.h:172
int pages_confirmed
The number of pages for which a confirm (MCF) message was returned.
Definition private/t38_gateway.h:158
t38_gateway_real_time_frame_handler_t real_time_frame_handler
A pointer to a callback routine to be called when frames are exchanged.
Definition private/t38_gateway.h:183
int ms_per_tx_chunk
Required time between T.38 transmissions, in ms.
Definition private/t38_gateway.h:144
int supported_modems
A bit mask of the currently supported modem types.
Definition private/t38_gateway.h:140
Definition private/t38_gateway.h:110
int16_t len
HDLC message lengths.
Definition private/t38_gateway.h:114
uint16_t flags
HDLC message status flags.
Definition private/t38_gateway.h:116
uint8_t buf[260]
HDLC message buffers.
Definition private/t38_gateway.h:112
int16_t contents
HDLC buffer contents.
Definition private/t38_gateway.h:118
Definition private/t38_gateway.h:125
t38_gateway_hdlc_buf_t buf[256]
HDLC message buffers.
Definition private/t38_gateway.h:127
int in
HDLC buffer number for input.
Definition private/t38_gateway.h:129
int out
HDLC buffer number for output.
Definition private/t38_gateway.h:131
Definition private/t38_gateway.h:192
t38_gateway_t38_state_t t38x
Definition private/t38_gateway.h:194
logging_state_t logging
Error and flow logging control.
Definition private/t38_gateway.h:201
t38_gateway_core_state_t core
Definition private/t38_gateway.h:198
t38_gateway_audio_state_t audio
Definition private/t38_gateway.h:196
Definition private/t38_gateway.h:42
int in_progress_rx_indicator
The T.38 indicator currently in use.
Definition private/t38_gateway.h:60
uint8_t suppress_nsx_string[2][MAX_NSX_SUPPRESSION]
If NSF, NSC, and NSS are to be suppressed by altering their contents to something the far end will no...
Definition private/t38_gateway.h:51
int current_tx_data_type
The current T.38 data type being sent.
Definition private/t38_gateway.h:63
int current_rx_field_class
the current class of field being received - i.e. none, non-ECM or HDLC
Definition private/t38_gateway.h:58
int suppress_nsx_len[2]
If NSF, NSC, and NSS are to be suppressed by altering their contents to something the far end will no...
Definition private/t38_gateway.h:48
bool corrupt_current_frame[2]
True if we need to corrupt the HDLC frame in progress, so the receiver cannot interpret it....
Definition private/t38_gateway.h:55
t38_core_state_t t38
Core T.38 IFP support.
Definition private/t38_gateway.h:44
Definition private/t38_gateway.h:79
int in_bits
The number of bits into the non-ECM buffer.
Definition private/t38_gateway.h:101
uint8_t data[2048]
non-ECM and HDLC modem receive data buffer.
Definition private/t38_gateway.h:81
int bit_no
The current bit number in the current non-ECM octet.
Definition private/t38_gateway.h:91
uint16_t crc
Progressively calculated CRC for HDLC messages received from a modem.
Definition private/t38_gateway.h:93
int data_ptr
Current pointer into the data buffer.
Definition private/t38_gateway.h:83
bool fill_bit_removal
True if non-ECM fill bits are to be stripped when sending image data.
Definition private/t38_gateway.h:95
int out_octets
The number of octets fed out from the non-ECM buffer.
Definition private/t38_gateway.h:103
int bits_absorbed
The number of bits taken from the modem for the current scan row. This is used during non-ECM transmi...
Definition private/t38_gateway.h:89
uint16_t bit_stream
The current octet being received as non-ECM data.
Definition private/t38_gateway.h:85
int octets_per_data_packet
The number of octets to send in each image packet (non-ECM or ECM) at the current rate and the curren...
Definition private/t38_gateway.h:98
struct t38_core_state_s t38_core_state_t
Definition t38_core.h:202
void(* t38_gateway_real_time_frame_handler_t)(void *user_data, bool incoming, const uint8_t *msg, int len)
T.38 gateway real time frame handler.
Definition t38_gateway.h:55
#define MAX_NSX_SUPPRESSION
Definition t38_gateway.h:43
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.
Definition t38_non_ecm_buffer.h:77