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Diffstat (limited to 'pipewire-jack/jack/control.h')
| -rw-r--r-- | pipewire-jack/jack/control.h | 658 |
1 files changed, 658 insertions, 0 deletions
diff --git a/pipewire-jack/jack/control.h b/pipewire-jack/jack/control.h new file mode 100644 index 0000000..e466abc --- /dev/null +++ b/pipewire-jack/jack/control.h @@ -0,0 +1,658 @@ +/* -*- Mode: C ; c-basic-offset: 4 -*- */ +/* + JACK control API + + Copyright (C) 2008 Nedko Arnaudov + Copyright (C) 2008 GRAME + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; version 2 of the License. + + 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + +*/ +/** + * @file jack/control.h + * @ingroup publicheader + * @brief JACK control API + * + */ + +#ifndef JACKCTL_H__2EEDAD78_DF4C_4B26_83B7_4FF1A446A47E__INCLUDED +#define JACKCTL_H__2EEDAD78_DF4C_4B26_83B7_4FF1A446A47E__INCLUDED + +#include <jack/types.h> +#include <jack/jslist.h> +#include <jack/systemdeps.h> +#if !defined(sun) && !defined(__sun__) +#include <stdbool.h> +#endif + +/** Parameter types, intentionally similar to jack_driver_param_type_t */ +typedef enum +{ + JackParamInt = 1, /**< @brief value type is a signed integer */ + JackParamUInt, /**< @brief value type is an unsigned integer */ + JackParamChar, /**< @brief value type is a char */ + JackParamString, /**< @brief value type is a string with max size of ::JACK_PARAM_STRING_MAX+1 chars */ + JackParamBool, /**< @brief value type is a boolean */ +} jackctl_param_type_t; + +/** Driver types */ +typedef enum +{ + JackMaster = 1, /**< @brief master driver */ + JackSlave /**< @brief slave driver */ +} jackctl_driver_type_t; + +/** @brief Max value that jackctl_param_type_t type can have */ +#define JACK_PARAM_MAX (JackParamBool + 1) + +/** @brief Max length of string parameter value, excluding terminating null char */ +#define JACK_PARAM_STRING_MAX 127 + +/** @brief Type for parameter value */ +/* intentionally similar to jack_driver_param_value_t */ +union jackctl_parameter_value +{ + uint32_t ui; /**< @brief member used for ::JackParamUInt */ + int32_t i; /**< @brief member used for ::JackParamInt */ + char c; /**< @brief member used for ::JackParamChar */ + char str[JACK_PARAM_STRING_MAX + 1]; /**< @brief member used for ::JackParamString */ + bool b; /**< @brief member used for ::JackParamBool */ +}; + +/** opaque type for server object */ +typedef struct jackctl_server jackctl_server_t; + +/** opaque type for driver object */ +typedef struct jackctl_driver jackctl_driver_t; + +/** opaque type for internal client object */ +typedef struct jackctl_internal jackctl_internal_t; + +/** opaque type for parameter object */ +typedef struct jackctl_parameter jackctl_parameter_t; + +/** opaque type for sigmask object */ +typedef struct jackctl_sigmask jackctl_sigmask_t; + +#ifdef __cplusplus +extern "C" { +#endif +#if 0 +} /* Adjust editor indent */ +#endif + +/** + * @defgroup ControlAPI The API for starting and controlling a JACK server + * @{ + */ + +/** + * Call this function to setup process signal handling. As a general + * rule, it is required for proper operation for the server object. + * + * @param flags signals setup flags, use 0 for none. Currently no + * flags are defined + * + * @return the configurated signal set. + */ +jackctl_sigmask_t * +jackctl_setup_signals( + unsigned int flags); + +/** + * Call this function to wait on a signal set. + * + * @param signals signals set to wait on + */ +void +jackctl_wait_signals( + jackctl_sigmask_t * signals); + +/** + * \bold THIS FUNCTION IS DEPRECATED AND SHOULD NOT BE USED IN + * NEW JACK PROJECTS + * + * @deprecated Please use jackctl_server_create2(). + */ +jackctl_server_t * +jackctl_server_create( + bool (* on_device_acquire)(const char * device_name), + void (* on_device_release)(const char * device_name)); + +/** + * Call this function to create server object. + * + * @param on_device_acquire - Optional callback to be called before device is acquired. If false is returned, device usage will fail + * @param on_device_release - Optional callback to be called after device is released. + * @param on_device_reservation_loop - Optional callback to be called when looping/idling the reservation. + * + * @return server object handle, NULL if creation of server object + * failed. Successfully created server object must be destroyed with + * paired call to ::jackctl_server_destroy + */ +jackctl_server_t * +jackctl_server_create2( + bool (* on_device_acquire)(const char * device_name), + void (* on_device_release)(const char * device_name), + void (* on_device_reservation_loop)(void)); + +/** + * Call this function to destroy server object. + * + * @param server server object handle to destroy + */ +void +jackctl_server_destroy( + jackctl_server_t * server); + +/** + * Call this function to open JACK server + * + * @param server server object handle + * @param driver driver to use + * + * @return success status: true - success, false - fail + */ +bool +jackctl_server_open( + jackctl_server_t * server, + jackctl_driver_t * driver); + +/** + * Call this function to start JACK server + * + * @param server server object handle + * + * @return success status: true - success, false - fail + */ +bool +jackctl_server_start( + jackctl_server_t * server); + +/** + * Call this function to stop JACK server + * + * @param server server object handle + * + * @return success status: true - success, false - fail + */ +bool +jackctl_server_stop( + jackctl_server_t * server); + +/** + * Call this function to close JACK server + * + * @param server server object handle + * + * @return success status: true - success, false - fail + */ +bool +jackctl_server_close( + jackctl_server_t * server); + +/** + * Call this function to get list of available drivers. List node data + * pointers is a driver object handle (::jackctl_driver_t). + * + * @param server server object handle to get drivers for + * + * @return Single linked list of driver object handles. Must not be + * modified. Always same for same server object. + */ +const JSList * +jackctl_server_get_drivers_list( + jackctl_server_t * server); + +/** + * Call this function to get list of server parameters. List node data + * pointers is a parameter object handle (::jackctl_parameter_t). + * + * @param server server object handle to get parameters for + * + * @return Single linked list of parameter object handles. Must not be + * modified. Always same for same server object. + */ +const JSList * +jackctl_server_get_parameters( + jackctl_server_t * server); + +/** + * Call this function to get list of available internal clients. List node data + * pointers is a internal client object handle (::jackctl_internal_t). + * + * @param server server object handle to get internal clients for + * + * @return Single linked list of internal client object handles. Must not be + * modified. Always same for same server object. + */ +const JSList * +jackctl_server_get_internals_list( + jackctl_server_t * server); + +/** + * Call this function to load one internal client. + * (can be used when the server is running) + * + * @param server server object handle + * @param internal internal to use + * + * @return success status: true - success, false - fail + */ +bool +jackctl_server_load_internal( + jackctl_server_t * server, + jackctl_internal_t * internal); + +/** + * Call this function to unload one internal client. + * (can be used when the server is running) + * + * @param server server object handle + * @param internal internal to unload + * + * @return success status: true - success, false - fail + */ +bool +jackctl_server_unload_internal( + jackctl_server_t * server, + jackctl_internal_t * internal); + +/** + * Call this function to load a session file. + * (can be used when the server is running) + * + * @param server server object handle + * @param file the session file to load, containing a list of + * internal clients and connections to be made. + * + * @return success status: true - success, false - fail + */ +bool jackctl_server_load_session_file( + jackctl_server_t * server_ptr, + const char * file); + +/** + * Call this function to add a slave in the driver slave list. + * (cannot be used when the server is running that is between + * jackctl_server_start and jackctl_server_stop) + * + * @param server server object handle + * @param driver driver to add in the driver slave list. + * + * @return success status: true - success, false - fail + */ +bool +jackctl_server_add_slave(jackctl_server_t * server, + jackctl_driver_t * driver); + +/** + * Call this function to remove a slave from the driver slave list. + * (cannot be used when the server is running that is between + * jackctl_server_start and jackctl_server_stop) + * + * @param server server object handle + * @param driver driver to remove from the driver slave list. + * + * @return success status: true - success, false - fail + */ +bool +jackctl_server_remove_slave(jackctl_server_t * server, + jackctl_driver_t * driver); + +/** + * Call this function to switch master driver. + * + * @param server server object handle + * @param driver driver to switch to + * + * @return success status: true - success, false - fail + */ +bool +jackctl_server_switch_master(jackctl_server_t * server, + jackctl_driver_t * driver); + + +/** + * Call this function to get name of driver. + * + * @param driver driver object handle to get name of + * + * @return driver name. Must not be modified. Always same for same + * driver object. + */ +const char * +jackctl_driver_get_name( + jackctl_driver_t * driver); + +/** + * Call this function to get type of driver. + * + * @param driver driver object handle to get name of + * + * @return driver type. Must not be modified. Always same for same + * driver object. + */ +jackctl_driver_type_t +jackctl_driver_get_type( + jackctl_driver_t * driver); + +/** + * Call this function to get list of driver parameters. List node data + * pointers is a parameter object handle (::jackctl_parameter_t). + * + * @param driver driver object handle to get parameters for + * + * @return Single linked list of parameter object handles. Must not be + * modified. Always same for same driver object. + */ +const JSList * +jackctl_driver_get_parameters( + jackctl_driver_t * driver); + +/** + * Call this function to parse parameters for a driver. + * + * @param driver driver object handle + * @param argc parameter list len + * @param argv parameter list, as an array of char* + * + * @return success status: true - success, false - fail + */ +int +jackctl_driver_params_parse( + jackctl_driver_t * driver, + int argc, + char* argv[]); + +/** + * Call this function to get name of internal client. + * + * @param internal internal object handle to get name of + * + * @return internal name. Must not be modified. Always same for same + * internal object. + */ +const char * +jackctl_internal_get_name( + jackctl_internal_t * internal); + +/** + * Call this function to get list of internal parameters. List node data + * pointers is a parameter object handle (::jackctl_parameter_t). + * + * @param internal internal object handle to get parameters for + * + * @return Single linked list of parameter object handles. Must not be + * modified. Always same for same internal object. + */ +const JSList * +jackctl_internal_get_parameters( + jackctl_internal_t * internal); + +/** + * Call this function to get parameter name. + * + * @param parameter parameter object handle to get name of + * + * @return parameter name. Must not be modified. Always same for same + * parameter object. + */ +const char * +jackctl_parameter_get_name( + jackctl_parameter_t * parameter); + +/** + * Call this function to get parameter short description. + * + * @param parameter parameter object handle to get short description of + * + * @return parameter short description. Must not be modified. Always + * same for same parameter object. + */ +const char * +jackctl_parameter_get_short_description( + jackctl_parameter_t * parameter); + +/** + * Call this function to get parameter long description. + * + * @param parameter parameter object handle to get long description of + * + * @return parameter long description. Must not be modified. Always + * same for same parameter object. + */ +const char * +jackctl_parameter_get_long_description( + jackctl_parameter_t * parameter); + +/** + * Call this function to get parameter type. + * + * @param parameter parameter object handle to get type of + * + * @return parameter type. Always same for same parameter object. + */ +jackctl_param_type_t +jackctl_parameter_get_type( + jackctl_parameter_t * parameter); + +/** + * Call this function to get parameter character. + * + * @param parameter parameter object handle to get character of + * + * @return character. + */ +char +jackctl_parameter_get_id( + jackctl_parameter_t * parameter); + +/** + * Call this function to check whether parameter has been set, or its + * default value is being used. + * + * @param parameter parameter object handle to check + * + * @return true - parameter is set, false - parameter is using default + * value. + */ +bool +jackctl_parameter_is_set( + jackctl_parameter_t * parameter); + +/** + * Call this function to reset parameter to its default value. + * + * @param parameter parameter object handle to reset value of + * + * @return success status: true - success, false - fail + */ +bool +jackctl_parameter_reset( + jackctl_parameter_t * parameter); + +/** + * Call this function to get parameter value. + * + * @param parameter parameter object handle to get value of + * + * @return parameter value. + */ +union jackctl_parameter_value +jackctl_parameter_get_value( + jackctl_parameter_t * parameter); + +/** + * Call this function to set parameter value. + * + * @param parameter parameter object handle to get value of + * @param value_ptr pointer to variable containing parameter value + * + * @return success status: true - success, false - fail + */ +bool +jackctl_parameter_set_value( + jackctl_parameter_t * parameter, + const union jackctl_parameter_value * value_ptr); + +/** + * Call this function to get parameter default value. + * + * @param parameter parameter object handle to get default value of + * + * @return parameter default value. + */ +union jackctl_parameter_value +jackctl_parameter_get_default_value( + jackctl_parameter_t * parameter); + +/** + * Call this function check whether parameter has range constraint. + * + * @param parameter object handle of parameter to check + * + * @return whether parameter has range constraint. + */ +bool +jackctl_parameter_has_range_constraint( + jackctl_parameter_t * parameter); + +/** + * Call this function check whether parameter has enumeration constraint. + * + * @param parameter object handle of parameter to check + * + * @return whether parameter has enumeration constraint. + */ +bool +jackctl_parameter_has_enum_constraint( + jackctl_parameter_t * parameter); + +/** + * Call this function get how many enumeration values parameter has. + * + * @param parameter object handle of parameter + * + * @return number of enumeration values + */ +uint32_t +jackctl_parameter_get_enum_constraints_count( + jackctl_parameter_t * parameter); + +/** + * Call this function to get parameter enumeration value. + * + * @param parameter object handle of parameter + * @param index index of parameter enumeration value + * + * @return enumeration value. + */ +union jackctl_parameter_value +jackctl_parameter_get_enum_constraint_value( + jackctl_parameter_t * parameter, + uint32_t index); + +/** + * Call this function to get parameter enumeration value description. + * + * @param parameter object handle of parameter + * @param index index of parameter enumeration value + * + * @return enumeration value description. + */ +const char * +jackctl_parameter_get_enum_constraint_description( + jackctl_parameter_t * parameter, + uint32_t index); + +/** + * Call this function to get parameter range. + * + * @param parameter object handle of parameter + * @param min_ptr pointer to variable receiving parameter minimum value + * @param max_ptr pointer to variable receiving parameter maximum value + */ +void +jackctl_parameter_get_range_constraint( + jackctl_parameter_t * parameter, + union jackctl_parameter_value * min_ptr, + union jackctl_parameter_value * max_ptr); + +/** + * Call this function to check whether parameter constraint is strict, + * i.e. whether supplying non-matching value will not work for sure. + * + * @param parameter parameter object handle to check + * + * @return whether parameter constraint is strict. + */ +bool +jackctl_parameter_constraint_is_strict( + jackctl_parameter_t * parameter); + +/** + * Call this function to check whether parameter has fake values, + * i.e. values have no user meaningful meaning and only value + * description is meaningful to user. + * + * @param parameter parameter object handle to check + * + * @return whether parameter constraint is strict. + */ +bool +jackctl_parameter_constraint_is_fake_value( + jackctl_parameter_t * parameter); + +/** + * Call this function to log an error message. + * + * @param format string + */ +void +jack_error( + const char *format, + ...); + +/** + * Call this function to log an information message. + * + * @param format string + */ +void +jack_info( + const char *format, + ...); + +/** + * Call this function to log an information message but only when + * verbose mode is enabled. + * + * @param format string + */ +void +jack_log( + const char *format, + ...); + +/* @} */ + +#if 0 +{ /* Adjust editor indent */ +#endif +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif /* #ifndef JACKCTL_H__2EEDAD78_DF4C_4B26_83B7_4FF1A446A47E__INCLUDED */ |