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Diffstat (limited to 'third_party/pipewire/spa/monitor/device.h')
| -rw-r--r-- | third_party/pipewire/spa/monitor/device.h | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/third_party/pipewire/spa/monitor/device.h b/third_party/pipewire/spa/monitor/device.h new file mode 100644 index 0000000000..16ad4a1d6b --- /dev/null +++ b/third_party/pipewire/spa/monitor/device.h @@ -0,0 +1,297 @@ +/* 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> + +/** + * spa_device: + * + * The device interface can be used to monitor all kinds of devices + * and create objects as a result. Objects a typically other + * Devices or Nodes. + * + */ +#define SPA_TYPE_INTERFACE_Device SPA_TYPE_INFO_INTERFACE_BASE "Device" + +#define SPA_VERSION_DEVICE 0 +struct spa_device { struct spa_interface iface; }; + +/** + * Information about the device and parameters it supports + * + * This information is part of the info event on a device. + */ +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; /**< device properties */ + struct spa_param_info *params; /**< supported parameters */ + uint32_t n_params; /**< number of elements in params */ +}; + +#define SPA_DEVICE_INFO_INIT() (struct spa_device_info){ SPA_VERSION_DEVICE_INFO, } + +/** + * Information about a device object + * + * This information is part of the object_info event on the device. + */ +struct spa_device_object_info { +#define SPA_VERSION_DEVICE_OBJECT_INFO 0 + uint32_t version; + + const char *type; /**< the object type managed by this device */ + const char *factory_name; /**< a factory name that implements the object */ + +#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; /**< extra object properties */ +}; + +#define SPA_DEVICE_OBJECT_INFO_INIT() (struct spa_device_object_info){ SPA_VERSION_DEVICE_OBJECT_INFO, } + +/** the result of spa_device_enum_params() */ +#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 + +/** + * spa_device_events: + * + * Events are always emitted from the main thread + */ +struct spa_device_events { + /** version of the structure */ +#define SPA_VERSION_DEVICE_EVENTS 0 + uint32_t version; + + /** notify extra information about the device */ + void (*info) (void *data, const struct spa_device_info *info); + + /** notify a result */ + void (*result) (void *data, int seq, int res, uint32_t type, const void *result); + + /** a device event */ + void (*event) (void *data, const struct spa_event *event); + + /** info changed for an object managed by the device, info is NULL when + * the object is removed */ + 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 + +/** + * spa_device_methods: + */ +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; + + /** + * Set events to receive asynchronous notifications from + * the device. + * + * Setting the events will trigger the info event and an + * object_info event for each managed object on the new + * listener. + * + * \param device a #spa_device + * \param listener a listener + * \param events a #struct spa_device_events + * \param data data passed as first argument in functions of \a events + * \return 0 on success + * < 0 errno on error + */ + int (*add_listener) (void *object, + struct spa_hook *listener, + const struct spa_device_events *events, + void *data); + /** + * Perform a sync operation. + * + * This method will emit the result event with the given sequence + * number synchronously or with the returned async return value + * asynchronously. + * + * Because all methods are serialized in the device, this can be used + * to wait for completion of all previous method calls. + * + * \param seq a sequence number + * \return 0 on success + * -EINVAL when node is NULL + * an async result + */ + int (*sync) (void *object, int seq); + + /** + * Enumerate the parameters of a device. + * + * Parameters are identified with an \a id. Some parameters can have + * multiple values, see the documentation of the parameter id. + * + * Parameters can be filtered by passing a non-NULL \a filter. + * + * The result callback will be called at most \max times with a + * struct spa_result_device_params as the result. + * + * This function must be called from the main thread. + * + * \param device a \ref spa_device + * \param seq a sequence number to pass to the result function + * \param id the param id to enumerate + * \param index the index of enumeration, pass 0 for the first item. + * \param max the maximum number of items to iterate + * \param filter and optional filter to use + * \return 0 when there are no more parameters to enumerate + * -EINVAL when invalid arguments are given + * -ENOENT the parameter \a id is unknown + * -ENOTSUP when there are no parameters + * implemented on \a device + */ + int (*enum_params) (void *object, int seq, + uint32_t id, uint32_t index, uint32_t max, + const struct spa_pod *filter); + + /** + * Set the configurable parameter in \a device. + * + * Usually, \a param will be obtained from enum_params and then + * modified but it is also possible to set another spa_pod + * as long as its keys and types match a supported object. + * + * Objects with property keys that are not known are ignored. + * + * This function must be called from the main thread. + * + * \param device a \ref spa_device + * \param id the parameter id to configure + * \param flags additional flags + * \param param the parameter to configure + * + * \return 0 on success + * -EINVAL when invalid arguments are given + * -ENOTSUP when there are no parameters implemented on \a device + * -ENOENT the parameter is unknown + */ + 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" /**< the api used to discover this + * device */ +#define SPA_KEY_DEVICE_API "device.api" /**< the api used by the device + * Ex. "udev", "alsa", "v4l2". */ +#define SPA_KEY_DEVICE_NAME "device.name" /**< the name of the device */ +#define SPA_KEY_DEVICE_ALIAS "device.alias" /**< alternative name of the device */ +#define SPA_KEY_DEVICE_NICK "device.nick" /**< the device short name */ +#define SPA_KEY_DEVICE_DESCRIPTION "device.description" /**< a device description */ +#define SPA_KEY_DEVICE_ICON "device.icon" /**< icon for the device. A base64 blob + * containing PNG image data */ +#define SPA_KEY_DEVICE_ICON_NAME "device.icon-name" /**< an XDG icon name for the device. + * Ex. "sound-card-speakers-usb" */ +#define SPA_KEY_DEVICE_PLUGGED_USEC "device.plugged.usec" /**< when the device was plugged */ + +#define SPA_KEY_DEVICE_BUS_ID "device.bus-id" /**< the device bus-id */ +#define SPA_KEY_DEVICE_BUS_PATH "device.bus-path" /**< bus path to the device in the OS' + * format. + * Ex. "pci-0000:00:14.0-usb-0:3.2:1.0" */ +#define SPA_KEY_DEVICE_BUS "device.bus" /**< bus of the device if applicable. One of + * "isa", "pci", "usb", "firewire", + * "bluetooth" */ +#define SPA_KEY_DEVICE_SUBSYSTEM "device.subsystem" /**< device subsystem */ +#define SPA_KEY_DEVICE_SYSFS_PATH "device.sysfs.path" /**< device sysfs path */ + +#define SPA_KEY_DEVICE_VENDOR_ID "device.vendor.id" /**< vendor ID if applicable */ +#define SPA_KEY_DEVICE_VENDOR_NAME "device.vendor.name" /**< vendor name if applicable */ +#define SPA_KEY_DEVICE_PRODUCT_ID "device.product.id" /**< product ID if applicable */ +#define SPA_KEY_DEVICE_PRODUCT_NAME "device.product.name" /**< product name if applicable */ +#define SPA_KEY_DEVICE_SERIAL "device.serial" /**< Serial number if applicable */ +#define SPA_KEY_DEVICE_CLASS "device.class" /**< device class */ +#define SPA_KEY_DEVICE_CAPABILITIES "device.capabilities" /**< api specific device capabilities */ +#define SPA_KEY_DEVICE_FORM_FACTOR "device.form-factor" /**< form factor if applicable. One of + * "internal", "speaker", "handset", "tv", + * "webcam", "microphone", "headset", + * "headphone", "hands-free", "car", "hifi", + * "computer", "portable" */ +#define SPA_KEY_DEVICE_PROFILE "device.profile " /**< profile for the device */ +#define SPA_KEY_DEVICE_PROFILE_SET "device.profile-set" /**< profile set for the device */ + + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif /* SPA_DEVICE_H */ |