/usr/include/spandsp/t30_api.h is in libspandsp-dev 0.0.6-2.1.
This file is owned by root:root, with mode 0o644.
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* SpanDSP - a series of DSP components for telephony
*
* t30_api.h - definitions for T.30 fax processing
*
* Written by Steve Underwood <steveu@coppice.org>
*
* Copyright (C) 2003 Steve Underwood
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*! \file */
#if !defined(_SPANDSP_T30_API_H_)
#define _SPANDSP_T30_API_H_
#if defined(__cplusplus)
extern "C"
{
#endif
/*! Set the transmitted NSF frame to be associated with a T.30 context.
\brief Set the transmitted NSF frame to be associated with a T.30 context.
\param s The T.30 context.
\param nsf A pointer to the frame.
\param len The length of the frame.
\return 0 for OK, else -1. */
SPAN_DECLARE(int) t30_set_tx_nsf(t30_state_t *s, const uint8_t *nsf, int len);
/*! Get an NSF frame to be associated with a T.30 context.
\brief Set an NSF frame to be associated with a T.30 context.
\param s The T.30 context.
\param nsf A pointer to the frame.
\return the length of the NSF message. */
SPAN_DECLARE(size_t) t30_get_tx_nsf(t30_state_t *s, const uint8_t *nsf[]);
/*! Get an NSF frame to be associated with a T.30 context.
\brief Set an NSF frame to be associated with a T.30 context.
\param s The T.30 context.
\param nsf A pointer to the frame.
\return the length of the NSF message. */
SPAN_DECLARE(size_t) t30_get_rx_nsf(t30_state_t *s, const uint8_t *nsf[]);
/*! Set the transmitted NSC frame to be associated with a T.30 context.
\brief Set the transmitted NSC frame to be associated with a T.30 context.
\param s The T.30 context.
\param nsc A pointer to the frame.
\param len The length of the frame.
\return 0 for OK, else -1. */
SPAN_DECLARE(int) t30_set_tx_nsc(t30_state_t *s, const uint8_t *nsc, int len);
/*! Get an NSC frame to be associated with a T.30 context.
\brief Set an NSC frame to be associated with a T.30 context.
\param s The T.30 context.
\param nsc A pointer to the frame.
\return the length of the NSC message. */
SPAN_DECLARE(size_t) t30_get_tx_nsc(t30_state_t *s, const uint8_t *nsc[]);
/*! Get an NSC frame to be associated with a T.30 context.
\brief Set an NSC frame to be associated with a T.30 context.
\param s The T.30 context.
\param nsc A pointer to the frame.
\return the length of the NSC message. */
SPAN_DECLARE(size_t) t30_get_rx_nsc(t30_state_t *s, const uint8_t *nsc[]);
/*! Set the transmitted NSS frame to be associated with a T.30 context.
\brief Set the transmitted NSS frame to be associated with a T.30 context.
\param s The T.30 context.
\param nss A pointer to the frame.
\param len The length of the frame.
\return 0 for OK, else -1. */
SPAN_DECLARE(int) t30_set_tx_nss(t30_state_t *s, const uint8_t *nss, int len);
/*! Get an NSS frame to be associated with a T.30 context.
\brief Set an NSS frame to be associated with a T.30 context.
\param s The T.30 context.
\param nss A pointer to the frame.
\return the length of the NSS message. */
SPAN_DECLARE(size_t) t30_get_tx_nss(t30_state_t *s, const uint8_t *nss[]);
/*! Get an NSS frame to be associated with a T.30 context.
\brief Set an NSS frame to be associated with a T.30 context.
\param s The T.30 context.
\param nss A pointer to the frame.
\return the length of the NSS message. */
SPAN_DECLARE(size_t) t30_get_rx_nss(t30_state_t *s, const uint8_t *nss[]);
/*! Set the transmitted identifier associated with a T.30 context.
\brief Set the transmitted identifier associated with a T.30 context.
\param s The T.30 context.
\param id A pointer to the identifier.
\return 0 for OK, else -1. */
SPAN_DECLARE(int) t30_set_tx_ident(t30_state_t *s, const char *id);
/*! Get the transmitted identifier associated with a T.30 context.
\brief Set the transmitted identifier associated with a T.30 context.
\param s The T.30 context.
\return A pointer to the identifier. */
SPAN_DECLARE(const char *) t30_get_tx_ident(t30_state_t *s);
/*! Get the transmitted identifier associated with a T.30 context.
\brief Set the transmitted identifier associated with a T.30 context.
\param s The T.30 context.
\return A pointer to the identifier. */
SPAN_DECLARE(const char *) t30_get_rx_ident(t30_state_t *s);
/*! Set the transmitted sub-address associated with a T.30 context.
\brief Set the transmitted sub-address associated with a T.30 context.
\param s The T.30 context.
\param sub_address A pointer to the sub-address.
\return 0 for OK, else -1. */
SPAN_DECLARE(int) t30_set_tx_sub_address(t30_state_t *s, const char *sub_address);
/*! Get the received sub-address associated with a T.30 context.
\brief Get the received sub-address associated with a T.30 context.
\param s The T.30 context.
\return A pointer to the sub-address. */
SPAN_DECLARE(const char *) t30_get_tx_sub_address(t30_state_t *s);
/*! Get the received sub-address associated with a T.30 context.
\brief Get the received sub-address associated with a T.30 context.
\param s The T.30 context.
\return A pointer to the sub-address. */
SPAN_DECLARE(const char *) t30_get_rx_sub_address(t30_state_t *s);
/*! Set the transmitted selective polling address (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Set the transmitted selective polling address associated with a T.30 context.
\param s The T.30 context.
\param selective_polling_address A pointer to the selective polling address.
\return 0 for OK, else -1. */
SPAN_DECLARE(int) t30_set_tx_selective_polling_address(t30_state_t *s, const char *selective_polling_address);
/*! Get the received selective polling address (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Get the received selective polling address associated with a T.30 context.
\param s The T.30 context.
\return A pointer to the selective polling address. */
SPAN_DECLARE(const char *) t30_get_tx_selective_polling_address(t30_state_t *s);
/*! Get the received selective polling address (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Get the received selective polling address associated with a T.30 context.
\param s The T.30 context.
\return A pointer to the selective polling address. */
SPAN_DECLARE(const char *) t30_get_rx_selective_polling_address(t30_state_t *s);
/*! Set the transmitted polled sub-address (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Set the transmitted polled sub-address associated with a T.30 context.
\param s The T.30 context.
\param polled_sub_address A pointer to the polled sub-address.
\return 0 for OK, else -1. */
SPAN_DECLARE(int) t30_set_tx_polled_sub_address(t30_state_t *s, const char *polled_sub_address);
/*! Get the received polled sub-address (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Get the received polled sub-address associated with a T.30 context.
\param s The T.30 context.
\return A pointer to the polled sub-address. */
SPAN_DECLARE(const char *) t30_get_tx_polled_sub_address(t30_state_t *s);
/*! Get the received polled sub-address (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Get the received polled sub-address associated with a T.30 context.
\param s The T.30 context.
\return A pointer to the polled sub-address. */
SPAN_DECLARE(const char *) t30_get_rx_polled_sub_address(t30_state_t *s);
/*! Set the transmitted sender ident (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Set the transmitted sender ident associated with a T.30 context.
\param s The T.30 context.
\param sender_ident A pointer to the sender ident.
\return 0 for OK, else -1. */
SPAN_DECLARE(int) t30_set_tx_sender_ident(t30_state_t *s, const char *sender_ident);
/*! Get the received sender ident (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Get the received sender ident associated with a T.30 context.
\param s The T.30 context.
\return A pointer to the sender ident. */
SPAN_DECLARE(const char *) t30_get_tx_sender_ident(t30_state_t *s);
/*! Get the received sender ident (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Get the received sender ident associated with a T.30 context.
\param s The T.30 context.
\return A pointer to the sender ident. */
SPAN_DECLARE(const char *) t30_get_rx_sender_ident(t30_state_t *s);
/*! Set the transmitted password (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Set the transmitted password associated with a T.30 context.
\param s The T.30 context.
\param password A pointer to the password.
\return 0 for OK, else -1. */
SPAN_DECLARE(int) t30_set_tx_password(t30_state_t *s, const char *password);
/*! Get the received password (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Get the received password associated with a T.30 context.
\param s The T.30 context.
\return A pointer to the password. */
SPAN_DECLARE(const char *) t30_get_tx_password(t30_state_t *s);
/*! Get the received password (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Get the received password associated with a T.30 context.
\param s The T.30 context.
\return A pointer to the password. */
SPAN_DECLARE(const char *) t30_get_rx_password(t30_state_t *s);
/*! Set the transmitted TSA (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Set the transmitted TSA associated with a T.30 context.
\param s The T.30 context.
\param type The type of address.
\param address A pointer to the address.
\param len The length of the address.
\return 0 for OK, else -1. */
SPAN_DECLARE(int) t30_set_tx_tsa(t30_state_t *s, int type, const char *address, int len);
/*! Get the transmitted TSA (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Get the received TSA associated with a T.30 context.
\param s The T.30 context.
\param type The type of address.
\param address A pointer to the address.
\return The length of the address. */
SPAN_DECLARE(size_t) t30_get_tx_tsa(t30_state_t *s, int *type, const char *address[]);
/*! Get the received TSA associated with a T.30 context.
\brief Get the received TSA associated with a T.30 context.
\param s The T.30 context.
\param type The type of address.
\param address A pointer to the address.
\return The length of the address. */
SPAN_DECLARE(size_t) t30_get_rx_tsa(t30_state_t *s, int *type, const char *address[]);
/*! Set the transmitted IRA (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Set the transmitted IRA associated with a T.30 context.
\param s The T.30 context.
\param type The type of address.
\param address A pointer to the address.
\param len The length of the address.
\return 0 for OK, else -1. */
SPAN_DECLARE(int) t30_set_tx_ira(t30_state_t *s, int type, const char *address, int len);
/*! Get the transmitted IRA (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Get the received IRA associated with a T.30 context.
\param s The T.30 context.
\param type The type of address.
\param address A pointer to the address.
\return The length of the address. */
SPAN_DECLARE(size_t) t30_get_tx_ira(t30_state_t *s, int *type, const char *address[]);
/*! Get the received IRA associated with a T.30 context.
\brief Get the received IRA associated with a T.30 context.
\param s The T.30 context.
\param type The type of address.
\param address A pointer to the address.
\return The length of the address. */
SPAN_DECLARE(size_t) t30_get_rx_ira(t30_state_t *s, int *type, const char *address[]);
/*! Set the transmitted CIA (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Set the transmitted CIA associated with a T.30 context.
\param s The T.30 context.
\param type The type of address.
\param address A pointer to the address.
\param len The length of the address.
\return 0 for OK, else -1. */
SPAN_DECLARE(int) t30_set_tx_cia(t30_state_t *s, int type, const char *address, int len);
/*! Get the transmitted CIA (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Get the received CIA associated with a T.30 context.
\param s The T.30 context.
\param type The type of address.
\param address A pointer to the address.
\return The length of the address. */
SPAN_DECLARE(size_t) t30_get_tx_cia(t30_state_t *s, int *type, const char *address[]);
/*! Get the received CIA associated with a T.30 context.
\brief Get the received CIA associated with a T.30 context.
\param s The T.30 context.
\param type The type of address.
\param address A pointer to the address.
\return 0 for OK, else -1. */
SPAN_DECLARE(size_t) t30_get_rx_cia(t30_state_t *s, int *type, const char *address[]);
/*! Set the transmitted ISP (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Set the transmitted ISP associated with a T.30 context.
\param s The T.30 context.
\param type The type of address.
\param address A pointer to the address.
\param len The length of the address.
\return 0 for OK, else -1. */
SPAN_DECLARE(int) t30_set_tx_isp(t30_state_t *s, int type, const char *address, int len);
/*! Get the transmitted ISP (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Get the received ISP associated with a T.30 context.
\param s The T.30 context.
\param type The type of address.
\param address A pointer to the address.
\return 0 for OK, else -1. */
SPAN_DECLARE(size_t) t30_get_tx_isp(t30_state_t *s, int *type, const char *address[]);
/*! Get the received ISP associated with a T.30 context.
\brief Get the received ISP associated with a T.30 context.
\param s The T.30 context.
\param type The type of address.
\param address A pointer to the address.
\return 0 for OK, else -1. */
SPAN_DECLARE(size_t) t30_get_rx_isp(t30_state_t *s, int *type, const char *address[]);
/*! Set the transmitted CSA (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Set the transmitted CSA associated with a T.30 context.
\param s The T.30 context.
\param type The type of address.
\param address A pointer to the address.
\param len The length of the address.
\return 0 for OK, else -1. */
SPAN_DECLARE(int) t30_set_tx_csa(t30_state_t *s, int type, const char *address, int len);
/*! Get the transmitted CSA (i.e. the one we will send to the far
end) associated with a T.30 context.
\brief Get the received CSA associated with a T.30 context.
\param s The T.30 context.
\param type The type of address.
\param address A pointer to the address.
\return The length of the address. */
SPAN_DECLARE(size_t) t30_get_tx_csa(t30_state_t *s, int *type, const char *address[]);
/*! Get the received CSA associated with a T.30 context.
\brief Get the received CSA associated with a T.30 context.
\param s The T.30 context.
\param type The type of address.
\param address A pointer to the address.
\return 0 for OK, else -1. */
SPAN_DECLARE(size_t) t30_get_rx_csa(t30_state_t *s, int *type, const char *address[]);
/*! Set page header extends or overlays the image mode.
\brief Set page header overlay mode.
\param s The T.30 context.
\param header_overlays_image TRUE for overlay, or FALSE for extend the page. */
SPAN_DECLARE(int) t30_set_tx_page_header_overlays_image(t30_state_t *s, int header_overlays_image);
/*! Set the transmitted header information associated with a T.30 context.
\brief Set the transmitted header information associated with a T.30 context.
\param s The T.30 context.
\param info A pointer to the information string.
\return 0 for OK, else -1. */
SPAN_DECLARE(int) t30_set_tx_page_header_info(t30_state_t *s, const char *info);
/*! Set the transmitted header timestamp timezone associated with a T.30 context.
\brief Set the transmitted header timestamp timezone associated with a T.30 context.
\param s The T.30 context.
\param info A pointer to the POSIZ timezone string.
\return 0 for OK, else -1. */
SPAN_DECLARE(int) t30_set_tx_page_header_tz(t30_state_t *s, const char *tzstring);
/*! Get the header information associated with a T.30 context.
\brief Get the header information associated with a T.30 context.
\param s The T.30 context.
\param info A pointer to a buffer for the header information. The buffer
should be at least 51 bytes long.
\return the length of the string. */
SPAN_DECLARE(size_t) t30_get_tx_page_header_info(t30_state_t *s, char *info);
/*! Get the country of origin of the remote FAX machine associated with a T.30 context.
\brief Get the country of origin of the remote FAX machine associated with a T.30 context.
\param s The T.30 context.
\return a pointer to the country name, or NULL if the country is not known. */
SPAN_DECLARE(const char *) t30_get_rx_country(t30_state_t *s);
/*! Get the name of the vendor of the remote FAX machine associated with a T.30 context.
\brief Get the name of the vendor of the remote FAX machine associated with a T.30 context.
\param s The T.30 context.
\return a pointer to the vendor name, or NULL if the vendor is not known. */
SPAN_DECLARE(const char *) t30_get_rx_vendor(t30_state_t *s);
/*! Get the name of the model of the remote FAX machine associated with a T.30 context.
\brief Get the name of the model of the remote FAX machine associated with a T.30 context.
\param s The T.30 context.
\return a pointer to the model name, or NULL if the model is not known. */
SPAN_DECLARE(const char *) t30_get_rx_model(t30_state_t *s);
/*! Specify the file name of the next TIFF file to be received by a T.30
context.
\brief Set next receive file name.
\param s The T.30 context.
\param file The file name
\param stop_page The maximum page to receive. -1 for no restriction. */
SPAN_DECLARE(void) t30_set_rx_file(t30_state_t *s, const char *file, int stop_page);
/*! Specify the file name of the next TIFF file to be transmitted by a T.30
context.
\brief Set next transmit file name.
\param s The T.30 context.
\param file The file name
\param start_page The first page to send. -1 for no restriction.
\param stop_page The last page to send. -1 for no restriction. */
SPAN_DECLARE(void) t30_set_tx_file(t30_state_t *s, const char *file, int start_page, int stop_page);
/*! Set Internet aware FAX (IAF) mode.
\brief Set Internet aware FAX (IAF) mode.
\param s The T.30 context.
\param iaf TRUE for IAF, or FALSE for non-IAF. */
SPAN_DECLARE(void) t30_set_iaf_mode(t30_state_t *s, int iaf);
/*! Specify if error correction mode (ECM) is allowed by a T.30 context.
\brief Select ECM capability.
\param s The T.30 context.
\param enabled TRUE for ECM capable, FALSE for not ECM capable.
\return 0 if OK, else -1. */
SPAN_DECLARE(int) t30_set_ecm_capability(t30_state_t *s, int enabled);
/*! Specify the output encoding for TIFF files created during FAX reception.
\brief Specify the output encoding for TIFF files created during FAX reception.
\param s The T.30 context.
\param encoding The coding required. The options are T4_COMPRESSION_ITU_T4_1D,
T4_COMPRESSION_ITU_T4_2D, T4_COMPRESSION_ITU_T6. T6 is usually the
densest option, but support for it is broken in a number of software
packages.
\return 0 if OK, else -1. */
SPAN_DECLARE(int) t30_set_rx_encoding(t30_state_t *s, int encoding);
/*! Specify the minimum scan line time supported by a T.30 context.
\brief Specify minimum scan line time.
\param s The T.30 context.
\param min_time The minimum permitted scan line time, in milliseconds.
\return 0 if OK, else -1. */
SPAN_DECLARE(int) t30_set_minimum_scan_line_time(t30_state_t *s, int min_time);
/*! Specify which modem types are supported by a T.30 context.
\brief Specify supported modems.
\param s The T.30 context.
\param supported_modems Bit field list of the supported modems.
\return 0 if OK, else -1. */
SPAN_DECLARE(int) t30_set_supported_modems(t30_state_t *s, int supported_modems);
/*! Specify which compression types are supported by a T.30 context.
\brief Specify supported compression types.
\param s The T.30 context.
\param supported_compressions Bit field list of the supported compression types.
\return 0 if OK, else -1. */
SPAN_DECLARE(int) t30_set_supported_compressions(t30_state_t *s, int supported_compressions);
/*! Specify which resolutions are supported by a T.30 context.
\brief Specify supported resolutions.
\param s The T.30 context.
\param supported_resolutions Bit field list of the supported resolutions.
\return 0 if OK, else -1. */
SPAN_DECLARE(int) t30_set_supported_resolutions(t30_state_t *s, int supported_resolutions);
/*! Specify which images sizes are supported by a T.30 context.
\brief Specify supported image sizes.
\param s The T.30 context.
\param supported_image_sizes Bit field list of the supported widths and lengths.
\return 0 if OK, else -1. */
SPAN_DECLARE(int) t30_set_supported_image_sizes(t30_state_t *s, int supported_image_sizes);
/*! Specify which special T.30 features are supported by a T.30 context.
\brief Specify supported T.30 features.
\param s The T.30 context.
\param supported_t30_features Bit field list of the supported features.
\return 0 if OK, else -1. */
SPAN_DECLARE(int) t30_set_supported_t30_features(t30_state_t *s, int supported_t30_features);
/*! Set T.30 status. This may be used to adjust the status from within
the phase B and phase D callbacks.
\brief Set T.30 status.
\param s The T.30 context.
\param status The new status. */
SPAN_DECLARE(void) t30_set_status(t30_state_t *s, int status);
/*! Specify a period of responding with receiver not ready.
\brief Specify a period of responding with receiver not ready.
\param s The T.30 context.
\param count The number of times to report receiver not ready.
\return 0 if OK, else -1. */
SPAN_DECLARE(int) t30_set_receiver_not_ready(t30_state_t *s, int count);
/*! Set a callback function for T.30 phase B handling.
\brief Set a callback function for T.30 phase B handling.
\param s The T.30 context.
\param handler The callback function.
\param user_data An opaque pointer passed to the callback function. */
SPAN_DECLARE(void) t30_set_phase_b_handler(t30_state_t *s, t30_phase_b_handler_t *handler, void *user_data);
/*! Set a callback function for T.30 phase D handling.
\brief Set a callback function for T.30 phase D handling.
\param s The T.30 context.
\param handler The callback function.
\param user_data An opaque pointer passed to the callback function. */
SPAN_DECLARE(void) t30_set_phase_d_handler(t30_state_t *s, t30_phase_d_handler_t *handler, void *user_data);
/*! Set a callback function for T.30 phase E handling.
\brief Set a callback function for T.30 phase E handling.
\param s The T.30 context.
\param handler The callback function.
\param user_data An opaque pointer passed to the callback function. */
SPAN_DECLARE(void) t30_set_phase_e_handler(t30_state_t *s, t30_phase_e_handler_t *handler, void *user_data);
/*! Set a callback function for T.30 end of document handling.
\brief Set a callback function for T.30 end of document handling.
\param s The T.30 context.
\param handler The callback function.
\param user_data An opaque pointer passed to the callback function. */
SPAN_DECLARE(void) t30_set_document_handler(t30_state_t *s, t30_document_handler_t *handler, void *user_data);
/*! Set a callback function for T.30 frame exchange monitoring. This is called from the heart
of the signal processing, so don't take too long in the handler routine.
\brief Set a callback function for T.30 frame exchange monitoring.
\param s The T.30 context.
\param handler The callback function.
\param user_data An opaque pointer passed to the callback function. */
SPAN_DECLARE(void) t30_set_real_time_frame_handler(t30_state_t *s, t30_real_time_frame_handler_t *handler, void *user_data);
/*! Get a pointer to the logging context associated with a T.30 context.
\brief Get a pointer to the logging context associated with a T.30 context.
\param s The T.30 context.
\return A pointer to the logging context, or NULL.
*/
SPAN_DECLARE(logging_state_t *) t30_get_logging_state(t30_state_t *s);
#if defined(__cplusplus)
}
#endif
#endif
/*- End of file ------------------------------------------------------------*/
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