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diff --git a/src/pulse/introspect.h b/src/pulse/introspect.h new file mode 100644 index 0000000..c547bde --- /dev/null +++ b/src/pulse/introspect.h @@ -0,0 +1,829 @@ +#ifndef foointrospecthfoo +#define foointrospecthfoo + +/*** + This file is part of PulseAudio. + + Copyright 2004-2006 Lennart Poettering + Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB + + PulseAudio is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published + by the Free Software Foundation; either version 2.1 of the License, + or (at your option) any later version. + + PulseAudio 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 Lesser General Public License + along with PulseAudio; if not, see <http://www.gnu.org/licenses/>. +***/ + +#include <inttypes.h> + +#include <pulse/operation.h> +#include <pulse/context.h> +#include <pulse/cdecl.h> +#include <pulse/gccmacro.h> +#include <pulse/channelmap.h> +#include <pulse/volume.h> +#include <pulse/proplist.h> +#include <pulse/format.h> +#include <pulse/version.h> + +/** \page introspect Server Query and Control + * + * \section overv_sec Overview + * + * Sometimes it is necessary to query and modify global settings in the + * server. For this, PulseAudio has the introspection API. It can list sinks, + * sources, samples and other aspects of the server. It can also modify the + * attributes of the server that will affect operations on a global level, + * and not just the application's context. + * + * \section query_sec Querying + * + * All querying is done through callbacks. This approach is necessary to + * maintain an asynchronous design. The client will request the information + * and some time later, the server will respond with the desired data. + * + * Some objects can have multiple instances on the server. When requesting all + * of these at once, the callback will be called multiple times, once for + * each object. When the list has been exhausted, the callback will be called + * without an information structure and the eol parameter set to a positive + * value. + * + * Note that even if a single object is requested, and not the entire list, + * the terminating call will still be made. + * + * If an error occurs, the callback will be invoked without an information + * structure and eol set to a negative value.. + * + * Data members in the information structures are only valid during the + * duration of the callback. If they are required after the callback is + * finished, a deep copy of the information structure must be performed. + * + * \subsection server_subsec Server Information + * + * The server can be queried about its name, the environment it's running on + * and the currently active global defaults. Calling + * pa_context_get_server_info() provides access to a pa_server_info structure + * containing all of these. + * + * \subsection memstat_subsec Memory Usage + * + * Statistics about memory usage can be fetched using pa_context_stat(), + * giving a pa_stat_info structure. + * + * \subsection sinksrc_subsec Sinks and Sources + * + * The server can have an arbitrary number of sinks and sources. Each sink + * and source have both an index and a name associated with it. As such, + * there are three ways to get access to them: + * + * \li By index - pa_context_get_sink_info_by_index() / + * pa_context_get_source_info_by_index() + * \li By name - pa_context_get_sink_info_by_name() / + * pa_context_get_source_info_by_name() + * \li All - pa_context_get_sink_info_list() / + * pa_context_get_source_info_list() + * + * All three method use the same callback and will provide a pa_sink_info or + * pa_source_info structure. + * + * \subsection siso_subsec Sink Inputs and Source Outputs + * + * Sink inputs and source outputs are the representations of the client ends + * of streams inside the server. I.e. they connect a client stream to one of + * the global sinks or sources. + * + * Sink inputs and source outputs only have an index to identify them. As + * such, there are only two ways to get information about them: + * + * \li By index - pa_context_get_sink_input_info() / + * pa_context_get_source_output_info() + * \li All - pa_context_get_sink_input_info_list() / + * pa_context_get_source_output_info_list() + * + * The structure returned is the pa_sink_input_info or pa_source_output_info + * structure. + * + * \subsection samples_subsec Samples + * + * The list of cached samples can be retrieved from the server. Three methods + * exist for querying the sample cache list: + * + * \li By index - pa_context_get_sample_info_by_index() + * \li By name - pa_context_get_sample_info_by_name() + * \li All - pa_context_get_sample_info_list() + * + * Note that this only retrieves information about the sample, not the sample + * data itself. + * + * \subsection module_subsec Driver Modules + * + * PulseAudio driver modules are identified by index and are retrieved using either + * pa_context_get_module_info() or pa_context_get_module_info_list(). The + * information structure is called pa_module_info. + * + * \subsection client_subsec Clients + * + * PulseAudio clients are also identified by index and are retrieved using + * either pa_context_get_client_info() or pa_context_get_client_info_list(). + * The information structure is called pa_client_info. + * + * \section ctrl_sec Control + * + * Some parts of the server are only possible to read, but most can also be + * modified in different ways. Note that these changes will affect all + * connected clients and not just the one issuing the request. + * + * \subsection sinksrc_subsec Sinks and Sources + * + * The most common change one would want to apply to sinks and sources is to + * modify the volume of the audio. Identically to how sinks and sources can + * be queried, there are two ways of identifying them: + * + * \li By index - pa_context_set_sink_volume_by_index() / + * pa_context_set_source_volume_by_index() + * \li By name - pa_context_set_sink_volume_by_name() / + * pa_context_set_source_volume_by_name() + * + * It is also possible to mute a sink or source: + * + * \li By index - pa_context_set_sink_mute_by_index() / + * pa_context_set_source_mute_by_index() + * \li By name - pa_context_set_sink_mute_by_name() / + * pa_context_set_source_mute_by_name() + * + * \subsection siso_subsec Sink Inputs and Source Outputs + * + * If an application desires to modify the volume of just a single stream + * (commonly one of its own streams), this can be done by setting the volume + * of its associated sink input or source output, using + * pa_context_set_sink_input_volume() or pa_context_set_source_output_volume(). + * + * It is also possible to remove sink inputs and source outputs, terminating + * the streams associated with them: + * + * \li Sink input - pa_context_kill_sink_input() + * \li Source output - pa_context_kill_source_output() + * + * It is strongly recommended that all volume changes are done as a direct + * result of user input. With automated requests, such as those resulting + * from misguided attempts of crossfading, PulseAudio can store the stream + * volume at an inappropriate moment and restore it later. Besides, such + * attempts lead to OSD popups in some desktop environments. + * + * As a special case of the general rule above, it is recommended that your + * application leaves the task of saving and restoring the volume of its + * streams to PulseAudio and does not attempt to do it by itself. PulseAudio + * really knows better about events such as stream moving or headphone + * plugging that would make the volume stored by the application inapplicable + * to the new configuration. + * + * Another important case where setting a sink input volume may be a bad idea + * is related to interpreters that interpret potentially untrusted scripts. + * PulseAudio relies on your application not making malicious requests (such + * as repeatedly setting the volume to 100%). Thus, script interpreters that + * represent a security boundary must sandbox volume-changing requests coming + * from their scripts. In the worst case, it may be necessary to apply the + * script-requested volume to the script-produced sounds by altering the + * samples in the script interpreter and not touching the sink or sink input + * volume as seen by PulseAudio. + * + * If an application changes any volume, it should also listen to changes of + * the same volume originating from outside the application (e.g., from the + * system mixer application) and update its user interface accordingly. Use + * \ref subscribe to get such notifications. + * + * \subsection module_subsec Modules + * + * Server modules can be remotely loaded and unloaded using + * pa_context_load_module() and pa_context_unload_module(). + * + * \subsection client_subsec Clients + * + * The only operation supported on clients is the possibility of kicking + * them off the server using pa_context_kill_client(). + */ + +/** \file + * + * Routines for daemon introspection. + * + * See also \subpage introspect + */ + +PA_C_DECL_BEGIN + +/** @{ \name Sinks */ + +/** Stores information about a specific port of a sink. Please + * note that this structure can be extended as part of evolutionary + * API updates at any time in any new release. \since 0.9.16 */ +typedef struct pa_sink_port_info { + const char *name; /**< Name of this port */ + const char *description; /**< Description of this port */ + uint32_t priority; /**< The higher this value is, the more useful this port is as a default. */ + int available; /**< A flags (see #pa_port_available), indicating availability status of this port. \since 2.0 */ + const char *availability_group; /**< An indentifier for the group of ports that share their availability status with + * each other. This is meant especially for handling cases where one 3.5 mm connector + * is used for headphones, headsets and microphones, and the hardware can only tell + * that something was plugged in but not what exactly. In this situation the ports for + * all those devices share their availability status, and PulseAudio can't tell which + * one is actually plugged in, and some application may ask the user what was plugged + * in. Such applications should get a list of all card ports and compare their + * `availability_group` fields. Ports that have the same group are those that need + * input from the user to determine which device was plugged in. The application should + * then activate the user-chosen port. + * + * May be NULL, in which case the port is not part of any availability group. + * + * The group identifier must be treated as an opaque identifier. The string may look + * like an ALSA control name, but applications must not assume any such relationship. + * The group naming scheme can change without a warning. + * + * Since one group can include both input and output ports, the grouping should be done + * using pa_card_port_info instead of pa_sink_port_info, but this field is duplicated + * also in pa_sink_port_info (and pa_source_port_info) in case someone finds that + * convenient. + * + * \since 14.0 */ + uint32_t type; /**< Port type, see #pa_device_port_type. \since 14.0 */ +} pa_sink_port_info; + +/** Stores information about sinks. Please note that this structure + * can be extended as part of evolutionary API updates at any time in + * any new release. */ +typedef struct pa_sink_info { + const char *name; /**< Name of the sink */ + uint32_t index; /**< Index of the sink */ + const char *description; /**< Description of this sink */ + pa_sample_spec sample_spec; /**< Sample spec of this sink */ + pa_channel_map channel_map; /**< Channel map */ + uint32_t owner_module; /**< Index of the owning module of this sink, or PA_INVALID_INDEX. */ + pa_cvolume volume; /**< Volume of the sink */ + int mute; /**< Mute switch of the sink */ + uint32_t monitor_source; /**< Index of the monitor source connected to this sink. */ + const char *monitor_source_name; /**< The name of the monitor source. */ + pa_usec_t latency; /**< Length of queued audio in the output buffer. */ + const char *driver; /**< Driver name */ + pa_sink_flags_t flags; /**< Flags */ + pa_proplist *proplist; /**< Property list \since 0.9.11 */ + pa_usec_t configured_latency; /**< The latency this device has been configured to. \since 0.9.11 */ + pa_volume_t base_volume; /**< Some kind of "base" volume that refers to unamplified/unattenuated volume in the context of the output device. \since 0.9.15 */ + pa_sink_state_t state; /**< State \since 0.9.15 */ + uint32_t n_volume_steps; /**< Number of volume steps for sinks which do not support arbitrary volumes. \since 0.9.15 */ + uint32_t card; /**< Card index, or PA_INVALID_INDEX. \since 0.9.15 */ + uint32_t n_ports; /**< Number of entries in port array \since 0.9.16 */ + pa_sink_port_info** ports; /**< Array of available ports, or NULL. Array is terminated by an entry set to NULL. The number of entries is stored in n_ports. \since 0.9.16 */ + pa_sink_port_info* active_port; /**< Pointer to active port in the array, or NULL. \since 0.9.16 */ + uint8_t n_formats; /**< Number of formats supported by the sink. \since 1.0 */ + pa_format_info **formats; /**< Array of formats supported by the sink. \since 1.0 */ +} pa_sink_info; + +/** Callback prototype for pa_context_get_sink_info_by_name() and friends */ +typedef void (*pa_sink_info_cb_t)(pa_context *c, const pa_sink_info *i, int eol, void *userdata); + +/** Get information about a sink by its name */ +pa_operation* pa_context_get_sink_info_by_name(pa_context *c, const char *name, pa_sink_info_cb_t cb, void *userdata); + +/** Get information about a sink by its index */ +pa_operation* pa_context_get_sink_info_by_index(pa_context *c, uint32_t idx, pa_sink_info_cb_t cb, void *userdata); + +/** Get the complete sink list */ +pa_operation* pa_context_get_sink_info_list(pa_context *c, pa_sink_info_cb_t cb, void *userdata); + +/** Set the volume of a sink device specified by its index */ +pa_operation* pa_context_set_sink_volume_by_index(pa_context *c, uint32_t idx, const pa_cvolume *volume, pa_context_success_cb_t cb, void *userdata); + +/** Set the volume of a sink device specified by its name */ +pa_operation* pa_context_set_sink_volume_by_name(pa_context *c, const char *name, const pa_cvolume *volume, pa_context_success_cb_t cb, void *userdata); + +/** Set the mute switch of a sink device specified by its index */ +pa_operation* pa_context_set_sink_mute_by_index(pa_context *c, uint32_t idx, int mute, pa_context_success_cb_t cb, void *userdata); + +/** Set the mute switch of a sink device specified by its name */ +pa_operation* pa_context_set_sink_mute_by_name(pa_context *c, const char *name, int mute, pa_context_success_cb_t cb, void *userdata); + +/** Suspend/Resume a sink. \since 0.9.7 */ +pa_operation* pa_context_suspend_sink_by_name(pa_context *c, const char *sink_name, int suspend, pa_context_success_cb_t cb, void* userdata); + +/** Suspend/Resume a sink. If idx is PA_INVALID_INDEX all sinks will be suspended. \since 0.9.7 */ +pa_operation* pa_context_suspend_sink_by_index(pa_context *c, uint32_t idx, int suspend, pa_context_success_cb_t cb, void* userdata); + +/** Change the profile of a sink. \since 0.9.16 */ +pa_operation* pa_context_set_sink_port_by_index(pa_context *c, uint32_t idx, const char*port, pa_context_success_cb_t cb, void *userdata); + +/** Change the profile of a sink. \since 0.9.15 */ +pa_operation* pa_context_set_sink_port_by_name(pa_context *c, const char*name, const char*port, pa_context_success_cb_t cb, void *userdata); + +/** @} */ + +/** @{ \name Sources */ + +/** Stores information about a specific port of a source. Please + * note that this structure can be extended as part of evolutionary + * API updates at any time in any new release. \since 0.9.16 */ +typedef struct pa_source_port_info { + const char *name; /**< Name of this port */ + const char *description; /**< Description of this port */ + uint32_t priority; /**< The higher this value is, the more useful this port is as a default. */ + int available; /**< A flags (see #pa_port_available), indicating availability status of this port. \since 2.0 */ + const char *availability_group; /**< An indentifier for the group of ports that share their availability status with + * each other. This is meant especially for handling cases where one 3.5 mm connector + * is used for headphones, headsets and microphones, and the hardware can only tell + * that something was plugged in but not what exactly. In this situation the ports for + * all those devices share their availability status, and PulseAudio can't tell which + * one is actually plugged in, and some application may ask the user what was plugged + * in. Such applications should get a list of all card ports and compare their + * `availability_group` fields. Ports that have the same group are those that need + * input from the user to determine which device was plugged in. The application should + * then activate the user-chosen port. + * + * May be NULL, in which case the port is not part of any availability group (which is + * the same as having a group with only one member). + * + * The group identifier must be treated as an opaque identifier. The string may look + * like an ALSA control name, but applications must not assume any such relationship. + * The group naming scheme can change without a warning. + * + * Since one group can include both input and output ports, the grouping should be done + * using pa_card_port_info instead of pa_source_port_info, but this field is duplicated + * also in pa_source_port_info (and pa_sink_port_info) in case someone finds that + * convenient. + * + * \since 14.0 */ + uint32_t type; /**< Port type, see #pa_device_port_type. \since 14.0 */ +} pa_source_port_info; + +/** Stores information about sources. Please note that this structure + * can be extended as part of evolutionary API updates at any time in + * any new release. */ +typedef struct pa_source_info { + const char *name; /**< Name of the source */ + uint32_t index; /**< Index of the source */ + const char *description; /**< Description of this source */ + pa_sample_spec sample_spec; /**< Sample spec of this source */ + pa_channel_map channel_map; /**< Channel map */ + uint32_t owner_module; /**< Owning module index, or PA_INVALID_INDEX. */ + pa_cvolume volume; /**< Volume of the source */ + int mute; /**< Mute switch of the sink */ + uint32_t monitor_of_sink; /**< If this is a monitor source, the index of the owning sink, otherwise PA_INVALID_INDEX. */ + const char *monitor_of_sink_name; /**< Name of the owning sink, or NULL. */ + pa_usec_t latency; /**< Length of filled record buffer of this source. */ + const char *driver; /**< Driver name */ + pa_source_flags_t flags; /**< Flags */ + pa_proplist *proplist; /**< Property list \since 0.9.11 */ + pa_usec_t configured_latency; /**< The latency this device has been configured to. \since 0.9.11 */ + pa_volume_t base_volume; /**< Some kind of "base" volume that refers to unamplified/unattenuated volume in the context of the input device. \since 0.9.15 */ + pa_source_state_t state; /**< State \since 0.9.15 */ + uint32_t n_volume_steps; /**< Number of volume steps for sources which do not support arbitrary volumes. \since 0.9.15 */ + uint32_t card; /**< Card index, or PA_INVALID_INDEX. \since 0.9.15 */ + uint32_t n_ports; /**< Number of entries in port array \since 0.9.16 */ + pa_source_port_info** ports; /**< Array of available ports, or NULL. Array is terminated by an entry set to NULL. The number of entries is stored in n_ports. \since 0.9.16 */ + pa_source_port_info* active_port; /**< Pointer to active port in the array, or NULL. \since 0.9.16 */ + uint8_t n_formats; /**< Number of formats supported by the source. \since 1.0 */ + pa_format_info **formats; /**< Array of formats supported by the source. \since 1.0 */ +} pa_source_info; + +/** Callback prototype for pa_context_get_source_info_by_name() and friends */ +typedef void (*pa_source_info_cb_t)(pa_context *c, const pa_source_info *i, int eol, void *userdata); + +/** Get information about a source by its name */ +pa_operation* pa_context_get_source_info_by_name(pa_context *c, const char *name, pa_source_info_cb_t cb, void *userdata); + +/** Get information about a source by its index */ +pa_operation* pa_context_get_source_info_by_index(pa_context *c, uint32_t idx, pa_source_info_cb_t cb, void *userdata); + +/** Get the complete source list */ +pa_operation* pa_context_get_source_info_list(pa_context *c, pa_source_info_cb_t cb, void *userdata); + +/** Set the volume of a source device specified by its index */ +pa_operation* pa_context_set_source_volume_by_index(pa_context *c, uint32_t idx, const pa_cvolume *volume, pa_context_success_cb_t cb, void *userdata); + +/** Set the volume of a source device specified by its name */ +pa_operation* pa_context_set_source_volume_by_name(pa_context *c, const char *name, const pa_cvolume *volume, pa_context_success_cb_t cb, void *userdata); + +/** Set the mute switch of a source device specified by its index */ +pa_operation* pa_context_set_source_mute_by_index(pa_context *c, uint32_t idx, int mute, pa_context_success_cb_t cb, void *userdata); + +/** Set the mute switch of a source device specified by its name */ +pa_operation* pa_context_set_source_mute_by_name(pa_context *c, const char *name, int mute, pa_context_success_cb_t cb, void *userdata); + +/** Suspend/Resume a source. \since 0.9.7 */ +pa_operation* pa_context_suspend_source_by_name(pa_context *c, const char *source_name, int suspend, pa_context_success_cb_t cb, void* userdata); + +/** Suspend/Resume a source. If idx is PA_INVALID_INDEX, all sources will be suspended. \since 0.9.7 */ +pa_operation* pa_context_suspend_source_by_index(pa_context *c, uint32_t idx, int suspend, pa_context_success_cb_t cb, void* userdata); + +/** Change the profile of a source. \since 0.9.16 */ +pa_operation* pa_context_set_source_port_by_index(pa_context *c, uint32_t idx, const char*port, pa_context_success_cb_t cb, void *userdata); + +/** Change the profile of a source. \since 0.9.15 */ +pa_operation* pa_context_set_source_port_by_name(pa_context *c, const char*name, const char*port, pa_context_success_cb_t cb, void *userdata); + +/** @} */ + +/** @{ \name Server */ + +/** Server information. Please note that this structure can be + * extended as part of evolutionary API updates at any time in any new + * release. */ +typedef struct pa_server_info { + const char *user_name; /**< User name of the daemon process */ + const char *host_name; /**< Host name the daemon is running on */ + const char *server_version; /**< Version string of the daemon */ + const char *server_name; /**< Server package name (usually "pulseaudio") */ + pa_sample_spec sample_spec; /**< Default sample specification */ + const char *default_sink_name; /**< Name of default sink. */ + const char *default_source_name; /**< Name of default source. */ + uint32_t cookie; /**< A random cookie for identifying this instance of PulseAudio. */ + pa_channel_map channel_map; /**< Default channel map. \since 0.9.15 */ +} pa_server_info; + +/** Callback prototype for pa_context_get_server_info() */ +typedef void (*pa_server_info_cb_t) (pa_context *c, const pa_server_info*i, void *userdata); + +/** Get some information about the server */ +pa_operation* pa_context_get_server_info(pa_context *c, pa_server_info_cb_t cb, void *userdata); + +/** @} */ + +/** @{ \name Modules */ + +/** Stores information about modules. Please note that this structure + * can be extended as part of evolutionary API updates at any time in + * any new release. */ +typedef struct pa_module_info { + uint32_t index; /**< Index of the module */ + const char*name, /**< Name of the module */ + *argument; /**< Argument string of the module */ + uint32_t n_used; /**< Usage counter or PA_INVALID_INDEX */ +/** \cond fulldocs */ + int auto_unload; /**< \deprecated Non-zero if this is an autoloaded module. */ +/** \endcond */ + pa_proplist *proplist; /**< Property list \since 0.9.15 */ +} pa_module_info; + +/** Callback prototype for pa_context_get_module_info() and friends */ +typedef void (*pa_module_info_cb_t) (pa_context *c, const pa_module_info*i, int eol, void *userdata); + +/** Get some information about a module by its index */ +pa_operation* pa_context_get_module_info(pa_context *c, uint32_t idx, pa_module_info_cb_t cb, void *userdata); + +/** Get the complete list of currently loaded modules */ +pa_operation* pa_context_get_module_info_list(pa_context *c, pa_module_info_cb_t cb, void *userdata); + +/** Callback prototype for pa_context_load_module() */ +typedef void (*pa_context_index_cb_t)(pa_context *c, uint32_t idx, void *userdata); + +/** Load a module. */ +pa_operation* pa_context_load_module(pa_context *c, const char*name, const char *argument, pa_context_index_cb_t cb, void *userdata); + +/** Unload a module. */ +pa_operation* pa_context_unload_module(pa_context *c, uint32_t idx, pa_context_success_cb_t cb, void *userdata); + +/** @} */ + +/** @{ \name Clients */ + +/** Stores information about clients. Please note that this structure + * can be extended as part of evolutionary API updates at any time in + * any new release. */ +typedef struct pa_client_info { + uint32_t index; /**< Index of this client */ + const char *name; /**< Name of this client */ + uint32_t owner_module; /**< Index of the owning module, or PA_INVALID_INDEX. */ + const char *driver; /**< Driver name */ + pa_proplist *proplist; /**< Property list \since 0.9.11 */ +} pa_client_info; + +/** Callback prototype for pa_context_get_client_info() and friends */ +typedef void (*pa_client_info_cb_t) (pa_context *c, const pa_client_info*i, int eol, void *userdata); + +/** Get information about a client by its index */ +pa_operation* pa_context_get_client_info(pa_context *c, uint32_t idx, pa_client_info_cb_t cb, void *userdata); + +/** Get the complete client list */ +pa_operation* pa_context_get_client_info_list(pa_context *c, pa_client_info_cb_t cb, void *userdata); + +/** Kill a client. */ +pa_operation* pa_context_kill_client(pa_context *c, uint32_t idx, pa_context_success_cb_t cb, void *userdata); + +/** @} */ + +/** @{ \name Cards */ + +/** \deprecated Superseded by pa_card_profile_info2 \since 0.9.15 */ +typedef struct pa_card_profile_info { + const char *name; /**< Name of this profile */ + const char *description; /**< Description of this profile */ + uint32_t n_sinks; /**< Number of sinks this profile would create */ + uint32_t n_sources; /**< Number of sources this profile would create */ + uint32_t priority; /**< The higher this value is, the more useful this profile is as a default. */ +} pa_card_profile_info; + +/** Stores information about a specific profile of a card. Please + * note that this structure can be extended as part of evolutionary + * API updates at any time in any new release. \since 5.0 */ +typedef struct pa_card_profile_info2 { + const char *name; /**< Name of this profile */ + const char *description; /**< Description of this profile */ + uint32_t n_sinks; /**< Number of sinks this profile would create */ + uint32_t n_sources; /**< Number of sources this profile would create */ + uint32_t priority; /**< The higher this value is, the more useful this profile is as a default. */ + int available; + /**< Is this profile available? If this is zero, meaning "unavailable", + * then it makes no sense to try to activate this profile. If this is + * non-zero, it's still not a guarantee that activating the profile will + * result in anything useful, it just means that the server isn't aware of + * any reason why the profile would definitely be useless. \since 5.0 */ +} pa_card_profile_info2; + +/** Stores information about a specific port of a card. Please + * note that this structure can be extended as part of evolutionary + * API updates at any time in any new release. \since 2.0 */ +typedef struct pa_card_port_info { + const char *name; /**< Name of this port */ + const char *description; /**< Description of this port */ + uint32_t priority; /**< The higher this value is, the more useful this port is as a default. */ + int available; /**< A #pa_port_available enum, indicating availability status of this port. */ + int direction; /**< A #pa_direction enum, indicating the direction of this port. */ + uint32_t n_profiles; /**< Number of entries in profile array */ + pa_card_profile_info** profiles; /**< \deprecated Superseded by profiles2 */ + pa_proplist *proplist; /**< Property list */ + int64_t latency_offset; /**< Latency offset of the port that gets added to the sink/source latency when the port is active. \since 3.0 */ + pa_card_profile_info2** profiles2; /**< Array of pointers to available profiles, or NULL. Array is terminated by an entry set to NULL. \since 5.0 */ + const char *availability_group; /**< An indentifier for the group of ports that share their availability status with + * each other. This is meant especially for handling cases where one 3.5 mm connector + * is used for headphones, headsets and microphones, and the hardware can only tell + * that something was plugged in but not what exactly. In this situation the ports for + * all those devices share their availability status, and PulseAudio can't tell which + * one is actually plugged in, and some application may ask the user what was plugged + * in. Such applications should get a list of all card ports and compare their + * `availability_group` fields. Ports that have the same group are those that need + * input from the user to determine which device was plugged in. The application should + * then activate the user-chosen port. + * + * May be NULL, in which case the port is not part of any availability group (which is + * the same as having a group with only one member). + * + * The group identifier must be treated as an opaque identifier. The string may look + * like an ALSA control name, but applications must not assume any such relationship. + * The group naming scheme can change without a warning. + * + * \since 14.0 */ + uint32_t type; /**< Port type, see #pa_device_port_type. \since 14.0 */ +} pa_card_port_info; + +/** Stores information about cards. Please note that this structure + * can be extended as part of evolutionary API updates at any time in + * any new release. \since 0.9.15 */ +typedef struct pa_card_info { + uint32_t index; /**< Index of this card */ + const char *name; /**< Name of this card */ + uint32_t owner_module; /**< Index of the owning module, or PA_INVALID_INDEX. */ + const char *driver; /**< Driver name */ + uint32_t n_profiles; /**< Number of entries in profile array */ + pa_card_profile_info* profiles; /**< \deprecated Superseded by profiles2 */ + pa_card_profile_info* active_profile; /**< \deprecated Superseded by active_profile2 */ + pa_proplist *proplist; /**< Property list */ + uint32_t n_ports; /**< Number of entries in port array */ + pa_card_port_info **ports; /**< Array of pointers to ports, or NULL. Array is terminated by an entry set to NULL. */ + pa_card_profile_info2** profiles2; /**< Array of pointers to available profiles, or NULL. Array is terminated by an entry set to NULL. \since 5.0 */ + pa_card_profile_info2* active_profile2; /**< Pointer to active profile in the array, or NULL. \since 5.0 */ +} pa_card_info; + +/** Callback prototype for pa_context_get_card_info_...() \since 0.9.15 */ +typedef void (*pa_card_info_cb_t) (pa_context *c, const pa_card_info*i, int eol, void *userdata); + +/** Get information about a card by its index \since 0.9.15 */ +pa_operation* pa_context_get_card_info_by_index(pa_context *c, uint32_t idx, pa_card_info_cb_t cb, void *userdata); + +/** Get information about a card by its name \since 0.9.15 */ +pa_operation* pa_context_get_card_info_by_name(pa_context *c, const char *name, pa_card_info_cb_t cb, void *userdata); + +/** Get the complete card list \since 0.9.15 */ +pa_operation* pa_context_get_card_info_list(pa_context *c, pa_card_info_cb_t cb, void *userdata); + +/** Change the profile of a card. \since 0.9.15 */ +pa_operation* pa_context_set_card_profile_by_index(pa_context *c, uint32_t idx, const char*profile, pa_context_success_cb_t cb, void *userdata); + +/** Change the profile of a card. \since 0.9.15 */ +pa_operation* pa_context_set_card_profile_by_name(pa_context *c, const char*name, const char*profile, pa_context_success_cb_t cb, void *userdata); + +/** Set the latency offset of a port. \since 3.0 */ +pa_operation* pa_context_set_port_latency_offset(pa_context *c, const char *card_name, const char *port_name, int64_t offset, pa_context_success_cb_t cb, void *userdata); + +/** @} */ + +/** @{ \name Sink Inputs */ + +/** Stores information about sink inputs. Please note that this structure + * can be extended as part of evolutionary API updates at any time in + * any new release. */ +typedef struct pa_sink_input_info { + uint32_t index; /**< Index of the sink input */ + const char *name; /**< Name of the sink input */ + uint32_t owner_module; /**< Index of the module this sink input belongs to, or PA_INVALID_INDEX when it does not belong to any module. */ + uint32_t client; /**< Index of the client this sink input belongs to, or PA_INVALID_INDEX when it does not belong to any client. */ + uint32_t sink; /**< Index of the connected sink */ + pa_sample_spec sample_spec; /**< The sample specification of the sink input. */ + pa_channel_map channel_map; /**< Channel map */ + pa_cvolume volume; /**< The volume of this sink input. */ + pa_usec_t buffer_usec; /**< Latency due to buffering in sink input, see pa_timing_info for details. */ + pa_usec_t sink_usec; /**< Latency of the sink device, see pa_timing_info for details. */ + const char *resample_method; /**< The resampling method used by this sink input. */ + const char *driver; /**< Driver name */ + int mute; /**< Stream muted \since 0.9.7 */ + pa_proplist *proplist; /**< Property list \since 0.9.11 */ + int corked; /**< Stream corked \since 1.0 */ + int has_volume; /**< Stream has volume. If not set, then the meaning of this struct's volume member is unspecified. \since 1.0 */ + int volume_writable; /**< The volume can be set. If not set, the volume can still change even though clients can't control the volume. \since 1.0 */ + pa_format_info *format; /**< Stream format information. \since 1.0 */ +} pa_sink_input_info; + +/** Callback prototype for pa_context_get_sink_input_info() and friends */ +typedef void (*pa_sink_input_info_cb_t) (pa_context *c, const pa_sink_input_info *i, int eol, void *userdata); + +/** Get some information about a sink input by its index */ +pa_operation* pa_context_get_sink_input_info(pa_context *c, uint32_t idx, pa_sink_input_info_cb_t cb, void *userdata); + +/** Get the complete sink input list */ +pa_operation* pa_context_get_sink_input_info_list(pa_context *c, pa_sink_input_info_cb_t cb, void *userdata); + +/** Move the specified sink input to a different sink. \since 0.9.5 */ +pa_operation* pa_context_move_sink_input_by_name(pa_context *c, uint32_t idx, const char *sink_name, pa_context_success_cb_t cb, void* userdata); + +/** Move the specified sink input to a different sink. \since 0.9.5 */ +pa_operation* pa_context_move_sink_input_by_index(pa_context *c, uint32_t idx, uint32_t sink_idx, pa_context_success_cb_t cb, void* userdata); + +/** Set the volume of a sink input stream */ +pa_operation* pa_context_set_sink_input_volume(pa_context *c, uint32_t idx, const pa_cvolume *volume, pa_context_success_cb_t cb, void *userdata); + +/** Set the mute switch of a sink input stream \since 0.9.7 */ +pa_operation* pa_context_set_sink_input_mute(pa_context *c, uint32_t idx, int mute, pa_context_success_cb_t cb, void *userdata); + +/** Kill a sink input. */ +pa_operation* pa_context_kill_sink_input(pa_context *c, uint32_t idx, pa_context_success_cb_t cb, void *userdata); + +/** @} */ + +/** @{ \name Source Outputs */ + +/** Stores information about source outputs. Please note that this structure + * can be extended as part of evolutionary API updates at any time in + * any new release. */ +typedef struct pa_source_output_info { + uint32_t index; /**< Index of the source output */ + const char *name; /**< Name of the source output */ + uint32_t owner_module; /**< Index of the module this source output belongs to, or PA_INVALID_INDEX when it does not belong to any module. */ + uint32_t client; /**< Index of the client this source output belongs to, or PA_INVALID_INDEX when it does not belong to any client. */ + uint32_t source; /**< Index of the connected source */ + pa_sample_spec sample_spec; /**< The sample specification of the source output */ + pa_channel_map channel_map; /**< Channel map */ + pa_usec_t buffer_usec; /**< Latency due to buffering in the source output, see pa_timing_info for details. */ + pa_usec_t source_usec; /**< Latency of the source device, see pa_timing_info for details. */ + const char *resample_method; /**< The resampling method used by this source output. */ + const char *driver; /**< Driver name */ + pa_proplist *proplist; /**< Property list \since 0.9.11 */ + int corked; /**< Stream corked \since 1.0 */ + pa_cvolume volume; /**< The volume of this source output \since 1.0 */ + int mute; /**< Stream muted \since 1.0 */ + int has_volume; /**< Stream has volume. If not set, then the meaning of this struct's volume member is unspecified. \since 1.0 */ + int volume_writable; /**< The volume can be set. If not set, the volume can still change even though clients can't control the volume. \since 1.0 */ + pa_format_info *format; /**< Stream format information. \since 1.0 */ +} pa_source_output_info; + +/** Callback prototype for pa_context_get_source_output_info() and friends */ +typedef void (*pa_source_output_info_cb_t) (pa_context *c, const pa_source_output_info *i, int eol, void *userdata); + +/** Get information about a source output by its index */ +pa_operation* pa_context_get_source_output_info(pa_context *c, uint32_t idx, pa_source_output_info_cb_t cb, void *userdata); + +/** Get the complete list of source outputs */ +pa_operation* pa_context_get_source_output_info_list(pa_context *c, pa_source_output_info_cb_t cb, void *userdata); + +/** Move the specified source output to a different source. \since 0.9.5 */ +pa_operation* pa_context_move_source_output_by_name(pa_context *c, uint32_t idx, const char *source_name, pa_context_success_cb_t cb, void* userdata); + +/** Move the specified source output to a different source. \since 0.9.5 */ +pa_operation* pa_context_move_source_output_by_index(pa_context *c, uint32_t idx, uint32_t source_idx, pa_context_success_cb_t cb, void* userdata); + +/** Set the volume of a source output stream \since 1.0 */ +pa_operation* pa_context_set_source_output_volume(pa_context *c, uint32_t idx, const pa_cvolume *volume, pa_context_success_cb_t cb, void *userdata); + +/** Set the mute switch of a source output stream \since 1.0 */ +pa_operation* pa_context_set_source_output_mute(pa_context *c, uint32_t idx, int mute, pa_context_success_cb_t cb, void *userdata); + +/** Kill a source output. */ +pa_operation* pa_context_kill_source_output(pa_context *c, uint32_t idx, pa_context_success_cb_t cb, void *userdata); + +/** @} */ + +/** @{ \name Statistics */ + +/** Memory block statistics. Please note that this structure + * can be extended as part of evolutionary API updates at any time in + * any new release. */ +typedef struct pa_stat_info { + uint32_t memblock_total; /**< Currently allocated memory blocks */ + uint32_t memblock_total_size; /**< Current total size of allocated memory blocks */ + uint32_t memblock_allocated; /**< Allocated memory blocks during the whole lifetime of the daemon. */ + uint32_t memblock_allocated_size; /**< Total size of all memory blocks allocated during the whole lifetime of the daemon. */ + uint32_t scache_size; /**< Total size of all sample cache entries. */ +} pa_stat_info; + +/** Callback prototype for pa_context_stat() */ +typedef void (*pa_stat_info_cb_t) (pa_context *c, const pa_stat_info *i, void *userdata); + +/** Get daemon memory block statistics */ +pa_operation* pa_context_stat(pa_context *c, pa_stat_info_cb_t cb, void *userdata); + +/** @} */ + +/** @{ \name Cached Samples */ + +/** Stores information about sample cache entries. Please note that this structure + * can be extended as part of evolutionary API updates at any time in + * any new release. */ +typedef struct pa_sample_info { + uint32_t index; /**< Index of this entry */ + const char *name; /**< Name of this entry */ + pa_cvolume volume; /**< Default volume of this entry */ + pa_sample_spec sample_spec; /**< Sample specification of the sample */ + pa_channel_map channel_map; /**< The channel map */ + pa_usec_t duration; /**< Duration of this entry */ + uint32_t bytes; /**< Length of this sample in bytes. */ + int lazy; /**< Non-zero when this is a lazy cache entry. */ + const char *filename; /**< In case this is a lazy cache entry, the filename for the sound file to be loaded on demand. */ + pa_proplist *proplist; /**< Property list for this sample. \since 0.9.11 */ +} pa_sample_info; + +/** Callback prototype for pa_context_get_sample_info_by_name() and friends */ +typedef void (*pa_sample_info_cb_t)(pa_context *c, const pa_sample_info *i, int eol, void *userdata); + +/** Get information about a sample by its name */ +pa_operation* pa_context_get_sample_info_by_name(pa_context *c, const char *name, pa_sample_info_cb_t cb, void *userdata); + +/** Get information about a sample by its index */ +pa_operation* pa_context_get_sample_info_by_index(pa_context *c, uint32_t idx, pa_sample_info_cb_t cb, void *userdata); + +/** Get the complete list of samples stored in the daemon. */ +pa_operation* pa_context_get_sample_info_list(pa_context *c, pa_sample_info_cb_t cb, void *userdata); + +/** @} */ + +/** \cond fulldocs */ + +/** @{ \name Autoload Entries */ + +/** \deprecated Type of an autoload entry. */ +typedef enum pa_autoload_type { + PA_AUTOLOAD_SINK = 0, + PA_AUTOLOAD_SOURCE = 1 +} pa_autoload_type_t; + +/** \deprecated Stores information about autoload entries. Please note that this structure + * can be extended as part of evolutionary API updates at any time in + * any new release. */ +typedef struct pa_autoload_info { + uint32_t index; /**< Index of this autoload entry */ + const char *name; /**< Name of the sink or source */ + pa_autoload_type_t type; /**< Type of the autoload entry */ + const char *module; /**< Module name to load */ + const char *argument; /**< Argument string for module */ +} pa_autoload_info; + +/** \deprecated Callback prototype for pa_context_get_autoload_info_by_name() and friends */ +typedef void (*pa_autoload_info_cb_t)(pa_context *c, const pa_autoload_info *i, int eol, void *userdata); + +/** \deprecated Get info about a specific autoload entry. */ +pa_operation* pa_context_get_autoload_info_by_name(pa_context *c, const char *name, pa_autoload_type_t type, pa_autoload_info_cb_t cb, void *userdata) PA_GCC_DEPRECATED; + +/** \deprecated Get info about a specific autoload entry. */ +pa_operation* pa_context_get_autoload_info_by_index(pa_context *c, uint32_t idx, pa_autoload_info_cb_t cb, void *userdata) PA_GCC_DEPRECATED; + +/** \deprecated Get the complete list of autoload entries. */ +pa_operation* pa_context_get_autoload_info_list(pa_context *c, pa_autoload_info_cb_t cb, void *userdata) PA_GCC_DEPRECATED; + +/** \deprecated Add a new autoload entry. */ +pa_operation* pa_context_add_autoload(pa_context *c, const char *name, pa_autoload_type_t type, const char *module, const char*argument, pa_context_index_cb_t, void* userdata) PA_GCC_DEPRECATED; + +/** \deprecated Remove an autoload entry. */ +pa_operation* pa_context_remove_autoload_by_name(pa_context *c, const char *name, pa_autoload_type_t type, pa_context_success_cb_t cb, void* userdata) PA_GCC_DEPRECATED; + +/** \deprecated Remove an autoload entry. */ +pa_operation* pa_context_remove_autoload_by_index(pa_context *c, uint32_t idx, pa_context_success_cb_t cb, void* userdata) PA_GCC_DEPRECATED; + +/** @} */ + +/** \endcond */ + +PA_C_DECL_END + +#endif |