device.h
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/* Simple Plugin API
*
* Copyright © 2018 Wim Taymans
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef SPA_DEVICE_H
#define SPA_DEVICE_H
#ifdef __cplusplus
extern "C" {
#endif
#include <spa/utils/defs.h>
#include <spa/utils/hook.h>
#include <spa/utils/dict.h>
#include <spa/pod/event.h>
#define SPA_TYPE_INTERFACE_Device SPA_TYPE_INFO_INTERFACE_BASE "Device"
#define SPA_VERSION_DEVICE 0
struct spa_device { struct spa_interface iface; };
struct spa_device_info {
#define SPA_VERSION_DEVICE_INFO 0
uint32_t version;
#define SPA_DEVICE_CHANGE_MASK_FLAGS (1u<<0)
#define SPA_DEVICE_CHANGE_MASK_PROPS (1u<<1)
#define SPA_DEVICE_CHANGE_MASK_PARAMS (1u<<2)
uint64_t change_mask;
uint64_t flags;
const struct spa_dict *props;
struct spa_param_info *params;
uint32_t n_params;
};
#define SPA_DEVICE_INFO_INIT() (struct spa_device_info){ SPA_VERSION_DEVICE_INFO, }
struct spa_device_object_info {
#define SPA_VERSION_DEVICE_OBJECT_INFO 0
uint32_t version;
const char *type;
const char *factory_name;
#define SPA_DEVICE_OBJECT_CHANGE_MASK_FLAGS (1u<<0)
#define SPA_DEVICE_OBJECT_CHANGE_MASK_PROPS (1u<<1)
uint64_t change_mask;
uint64_t flags;
const struct spa_dict *props;
};
#define SPA_DEVICE_OBJECT_INFO_INIT() (struct spa_device_object_info){ SPA_VERSION_DEVICE_OBJECT_INFO, }
#define SPA_RESULT_TYPE_DEVICE_PARAMS 1
struct spa_result_device_params {
uint32_t id;
uint32_t index;
uint32_t next;
struct spa_pod *param;
};
#define SPA_DEVICE_EVENT_INFO 0
#define SPA_DEVICE_EVENT_RESULT 1
#define SPA_DEVICE_EVENT_EVENT 2
#define SPA_DEVICE_EVENT_OBJECT_INFO 3
#define SPA_DEVICE_EVENT_NUM 4
struct spa_device_events {
#define SPA_VERSION_DEVICE_EVENTS 0
uint32_t version;
void (*info) (void *data, const struct spa_device_info *info);
void (*result) (void *data, int seq, int res, uint32_t type, const void *result);
void (*event) (void *data, const struct spa_event *event);
void (*object_info) (void *data, uint32_t id,
const struct spa_device_object_info *info);
};
#define SPA_DEVICE_METHOD_ADD_LISTENER 0
#define SPA_DEVICE_METHOD_SYNC 1
#define SPA_DEVICE_METHOD_ENUM_PARAMS 2
#define SPA_DEVICE_METHOD_SET_PARAM 3
#define SPA_DEVICE_METHOD_NUM 4
struct spa_device_methods {
/* the version of the methods. This can be used to expand this
* structure in the future */
#define SPA_VERSION_DEVICE_METHODS 0
uint32_t version;
int (*add_listener) (void *object,
struct spa_hook *listener,
const struct spa_device_events *events,
void *data);
int (*sync) (void *object, int seq);
int (*enum_params) (void *object, int seq,
uint32_t id, uint32_t index, uint32_t max,
const struct spa_pod *filter);
int (*set_param) (void *object,
uint32_t id, uint32_t flags,
const struct spa_pod *param);
};
#define spa_device_method(o,method,version,...) \
({ \
int _res = -ENOTSUP; \
struct spa_device *_o = o; \
spa_interface_call_res(&_o->iface, \
struct spa_device_methods, _res, \
method, version, ##__VA_ARGS__); \
_res; \
})
#define spa_device_add_listener(d,...) spa_device_method(d, add_listener, 0, __VA_ARGS__)
#define spa_device_sync(d,...) spa_device_method(d, sync, 0, __VA_ARGS__)
#define spa_device_enum_params(d,...) spa_device_method(d, enum_params, 0, __VA_ARGS__)
#define spa_device_set_param(d,...) spa_device_method(d, set_param, 0, __VA_ARGS__)
#define SPA_KEY_DEVICE_ENUM_API "device.enum.api"
#define SPA_KEY_DEVICE_API "device.api"
#define SPA_KEY_DEVICE_NAME "device.name"
#define SPA_KEY_DEVICE_ALIAS "device.alias"
#define SPA_KEY_DEVICE_NICK "device.nick"
#define SPA_KEY_DEVICE_DESCRIPTION "device.description"
#define SPA_KEY_DEVICE_ICON "device.icon"
#define SPA_KEY_DEVICE_ICON_NAME "device.icon-name"
#define SPA_KEY_DEVICE_PLUGGED_USEC "device.plugged.usec"
#define SPA_KEY_DEVICE_BUS_ID "device.bus-id"
#define SPA_KEY_DEVICE_BUS_PATH "device.bus-path"
#define SPA_KEY_DEVICE_BUS "device.bus"
#define SPA_KEY_DEVICE_SUBSYSTEM "device.subsystem"
#define SPA_KEY_DEVICE_SYSFS_PATH "device.sysfs.path"
#define SPA_KEY_DEVICE_VENDOR_ID "device.vendor.id"
#define SPA_KEY_DEVICE_VENDOR_NAME "device.vendor.name"
#define SPA_KEY_DEVICE_PRODUCT_ID "device.product.id"
#define SPA_KEY_DEVICE_PRODUCT_NAME "device.product.name"
#define SPA_KEY_DEVICE_SERIAL "device.serial"
#define SPA_KEY_DEVICE_CLASS "device.class"
#define SPA_KEY_DEVICE_CAPABILITIES "device.capabilities"
#define SPA_KEY_DEVICE_FORM_FACTOR "device.form-factor"
#define SPA_KEY_DEVICE_PROFILE "device.profile "
#define SPA_KEY_DEVICE_PROFILE_SET "device.profile-set"
#define SPA_KEY_DEVICE_STRING "device.string"
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* SPA_DEVICE_H */
defs.h
spa/utils/defs.h
hook.h
spa/utils/hook.h
event.h
spa/pod/event.h
spa_device_events
spa_device_events:
Definition: device.h:139
spa_device_events::result
void(* result)(void *data, int seq, int res, uint32_t type, const void *result)
notify a result
Definition: device.h:149
spa_device_events::event
void(* event)(void *data, const struct spa_event *event)
a device event
Definition: device.h:152
spa_device_events::info
void(* info)(void *data, const struct spa_device_info *info)
notify extra information about the device
Definition: device.h:146
spa_device_events::object_info
void(* object_info)(void *data, uint32_t id, const struct spa_device_object_info *info)
info changed for an object managed by the device, info is NULL when the object is removed
Definition: device.h:156
spa_device_events::version
uint32_t version
Definition: device.h:143
spa_device_info
Information about the device and parameters it supports.
Definition: device.h:67
spa_device_info::flags
uint64_t flags
Definition: device.h:79
spa_device_info::params
struct spa_param_info * params
supported parameters
Definition: device.h:81
spa_device_info::version
uint32_t version
Definition: device.h:70
spa_device_info::n_params
uint32_t n_params
number of elements in params
Definition: device.h:82
spa_device_info::change_mask
uint64_t change_mask
Definition: device.h:78
spa_device_methods
spa_device_methods:
Definition: device.h:174
spa_device_methods::version
uint32_t version
Definition: device.h:179
spa_device_methods::sync
int(* sync)(void *object, int seq)
Perform a sync operation.
Definition: device.h:215
spa_device_methods::enum_params
int(* enum_params)(void *object, int seq, uint32_t id, uint32_t index, uint32_t max, const struct spa_pod *filter)
Enumerate the parameters of a device.
Definition: device.h:242
spa_device_methods::set_param
int(* set_param)(void *object, uint32_t id, uint32_t flags, const struct spa_pod *param)
Set the configurable parameter in device.
Definition: device.h:267
spa_device_methods::add_listener
int(* add_listener)(void *object, struct spa_hook *listener, const struct spa_device_events *events, void *data)
Set events to receive asynchronous notifications from the device.
Definition: device.h:196
spa_device_object_info
Information about a device object.
Definition: device.h:93
spa_device_object_info::version
uint32_t version
Definition: device.h:96
spa_device_object_info::type
const char * type
the object type managed by this device
Definition: device.h:98
spa_device_object_info::change_mask
uint64_t change_mask
Definition: device.h:105
spa_device_object_info::factory_name
const char * factory_name
a factory name that implements the object
Definition: device.h:99
spa_device_object_info::flags
uint64_t flags
Definition: device.h:106
spa_device
Definition: device.h:60
spa_device::iface
struct spa_interface iface
Definition: device.h:60
spa_dict
Definition: dict.h:59
spa_event
Definition: event.h:48
spa_hook
A hook, contains the structure with functions and the data passed to the functions.
Definition: hook.h:342
spa_interface
Definition: hook.h:158
spa_param_info
information about a parameter
Definition: param.h:70
spa_pod
Definition: pod.h:63
spa_result_device_params
Definition: device.h:116
spa_result_device_params::id
uint32_t id
Definition: device.h:117
spa_result_device_params::index
uint32_t index
Definition: device.h:118
spa_result_device_params::next
uint32_t next
Definition: device.h:119
spa_result_device_params::param
struct spa_pod * param
Definition: device.h:120
dict.h
spa/utils/dict.h