Display 服务

[English]

辅助头文件： #include "brookesia/service_helper/media/display.hpp"
辅助类： esp_brookesia::service::helper::Display

概述

brookesia_service_display 管理显示输出、显示源、活动源仲裁、帧提交、触摸手势和背光控制。

核心职责

注册显示源，并把帧路由到活动物理输出。
提供输出/源发现和活动源选择服务函数。
暴露触摸手势事件和绑定输出的背光操作。

集成位置

该组件是 ESP-Brookesia 发布组件清单中的独立组件，可通过 ESP-IDF 组件依赖集成，并与同层框架组件按需组合。

服务接口

函数

`GetOutputs`

描述

Get display outputs.

执行要求

是否需要调度器: 不需要

参数

无。

返回值

类型: Array
描述: Example: [{"id":1,"name":"Output0","width":240,"height":240,"pixel_format":"RGB565","slot":"HalPanel","panel_instance":"Display:Panel0","group_id":"main_display","touch":{"id":1,"name":"Touch0","instance":"Display:Touch0","max_points":5,"operation_mode":"Interrupt"},"backlight":{"instance":"Display:Backlight0","on_off_supported":true}}]

Schema JSON

展开查看 JSON


{
  "name": "GetOutputs",
  "description": "Get display outputs.",
  "require_scheduler": false,
  "default_timeout_ms": null,
  "parameters": [],
  "return_value": {
    "type": "Array",
    "description": "Example: [{\"id\":1,\"name\":\"Output0\",\"width\":240,\"height\":240,\"pixel_format\":\"RGB565\",\"slot\":\"HalPanel\",\"panel_instance\":\"Display:Panel0\",\"group_id\":\"main_display\",\"touch\":{\"id\":1,\"name\":\"Touch0\",\"instance\":\"Display:Touch0\",\"max_points\":5,\"operation_mode\":\"Interrupt\"},\"backlight\":{\"instance\":\"Display:Backlight0\",\"on_off_supported\":true}}]"
  }
}

CLI 命令

svc_call Display GetOutputs

`GetSources`

描述

Get registered display sources.

执行要求

是否需要调度器: 不需要

参数

无。

返回值

类型: Array
描述: Example: [{"id":1,"name":"LVGL","role":"gui","preferred_outputs":["Output0"],"priority":0}]

Schema JSON

展开查看 JSON


{
  "name": "GetSources",
  "description": "Get registered display sources.",
  "require_scheduler": false,
  "default_timeout_ms": null,
  "parameters": [],
  "return_value": {
    "type": "Array",
    "description": "Example: [{\"id\":1,\"name\":\"LVGL\",\"role\":\"gui\",\"preferred_outputs\":[\"Output0\"],\"priority\":0}]"
  }
}

CLI 命令

svc_call Display GetSources

`RegisterSource`

描述

Register a display source. Example source: {"id":0,"name":"LVGL","role":"gui","preferred_outputs":["Output0"],"priority":0}

执行要求

是否需要调度器: 不需要

参数

Source
- 类型: Object
- 是否必填: 必填
- 描述: Display source info object. The id field is assigned by Display service.

返回值

类型: Number
描述: Registered display source id.

Schema JSON

展开查看 JSON


{
  "name": "RegisterSource",
  "description": "Register a display source. Example source: {\"id\":0,\"name\":\"LVGL\",\"role\":\"gui\",\"preferred_outputs\":[\"Output0\"],\"priority\":0}",
  "require_scheduler": false,
  "default_timeout_ms": null,
  "parameters": [
    {
      "name": "Source",
      "description": "Display source info object. The id field is assigned by Display service.",
      "type": "Object",
      "required": true,
      "default_value": null
    }
  ],
  "return_value": {
    "type": "Number",
    "description": "Registered display source id."
  }
}

CLI 命令

svc_call Display RegisterSource {"Source":null}

`UnregisterSource`

描述

Unregister a named display source.

执行要求

是否需要调度器: 不需要

参数

SourceName
- 类型: String
- 是否必填: 必填
- 描述: Display source name.

Schema JSON

展开查看 JSON


{
  "name": "UnregisterSource",
  "description": "Unregister a named display source.",
  "require_scheduler": false,
  "default_timeout_ms": null,
  "parameters": [
    {
      "name": "SourceName",
      "description": "Display source name.",
      "type": "String",
      "required": true,
      "default_value": null
    }
  ],
  "return_value": null
}

CLI 命令

svc_call Display UnregisterSource {"SourceName":null}

`RequestOutput`

描述

Request permission for a source to draw to one output.

执行要求

是否需要调度器: 不需要

参数

SourceName
- 类型: String
- 是否必填: 必填
- 描述: Registered source name.
OutputName
- 类型: String
- 是否必填: 可选
- 默认值: ""
- 描述: Display output name. Empty string uses the first output.

Schema JSON

展开查看 JSON


{
  "name": "RequestOutput",
  "description": "Request permission for a source to draw to one output.",
  "require_scheduler": false,
  "default_timeout_ms": null,
  "parameters": [
    {
      "name": "SourceName",
      "description": "Registered source name.",
      "type": "String",
      "required": true,
      "default_value": null
    },
    {
      "name": "OutputName",
      "description": "Display output name. Empty string uses the first output.",
      "type": "String",
      "required": false,
      "default_value": ""
    }
  ],
  "return_value": null
}

CLI 命令

svc_call Display RequestOutput {"SourceName":null,"OutputName":null}

`ReleaseOutput`

描述

Release a source's request for one output.

执行要求

是否需要调度器: 不需要

参数

SourceName
- 类型: String
- 是否必填: 必填
- 描述: Registered source name.
OutputName
- 类型: String
- 是否必填: 可选
- 默认值: ""
- 描述: Display output name. Empty string uses the first output.

Schema JSON

展开查看 JSON


{
  "name": "ReleaseOutput",
  "description": "Release a source's request for one output.",
  "require_scheduler": false,
  "default_timeout_ms": null,
  "parameters": [
    {
      "name": "SourceName",
      "description": "Registered source name.",
      "type": "String",
      "required": true,
      "default_value": null
    },
    {
      "name": "OutputName",
      "description": "Display output name. Empty string uses the first output.",
      "type": "String",
      "required": false,
      "default_value": ""
    }
  ],
  "return_value": null
}

CLI 命令

svc_call Display ReleaseOutput {"SourceName":null,"OutputName":null}

`SetActiveSource`

描述

Grant one display output to a named source. Empty source name clears the active source.

执行要求

是否需要调度器: 需要

参数

OutputName
- 类型: String
- 是否必填: 可选
- 默认值: ""
- 描述: Display output name, for example Output0. Empty string uses the first output.
SourceName
- 类型: String
- 是否必填: 必填
- 描述: Registered source name, or empty string to clear.

Schema JSON

展开查看 JSON


{
  "name": "SetActiveSource",
  "description": "Grant one display output to a named source. Empty source name clears the active source.",
  "require_scheduler": true,
  "default_timeout_ms": null,
  "parameters": [
    {
      "name": "OutputName",
      "description": "Display output name, for example Output0. Empty string uses the first output.",
      "type": "String",
      "required": false,
      "default_value": ""
    },
    {
      "name": "SourceName",
      "description": "Registered source name, or empty string to clear.",
      "type": "String",
      "required": true,
      "default_value": null
    }
  ],
  "return_value": null
}

CLI 命令

svc_call Display SetActiveSource {"OutputName":null,"SourceName":null}

`GetActiveSource`

描述

Get the active source name for one display output. Returns empty string when no source is active.

执行要求

是否需要调度器: 需要

参数

OutputName
- 类型: String
- 是否必填: 可选
- 默认值: ""
- 描述: Display output name, for example Output0. Empty string uses the first output.

返回值

类型: String
描述: Active source name, or an empty string when no source is active.

Schema JSON

展开查看 JSON


{
  "name": "GetActiveSource",
  "description": "Get the active source name for one display output. Returns empty string when no source is active.",
  "require_scheduler": true,
  "default_timeout_ms": null,
  "parameters": [
    {
      "name": "OutputName",
      "description": "Display output name, for example Output0. Empty string uses the first output.",
      "type": "String",
      "required": false,
      "default_value": ""
    }
  ],
  "return_value": {
    "type": "String",
    "description": "Active source name, or an empty string when no source is active."
  }
}

CLI 命令

svc_call Display GetActiveSource {"OutputName":null}

`SetActiveSourceRole`

描述

Grant one display output to the first registered source with the specified role.

执行要求

是否需要调度器: 需要

参数

OutputName
- 类型: String
- 是否必填: 可选
- 默认值: ""
- 描述: Display output name, for example Output0. Empty string uses the first output.
Role
- 类型: String
- 是否必填: 必填
- 描述: Registered source role.

Schema JSON

展开查看 JSON


{
  "name": "SetActiveSourceRole",
  "description": "Grant one display output to the first registered source with the specified role.",
  "require_scheduler": true,
  "default_timeout_ms": null,
  "parameters": [
    {
      "name": "OutputName",
      "description": "Display output name, for example Output0. Empty string uses the first output.",
      "type": "String",
      "required": false,
      "default_value": ""
    },
    {
      "name": "Role",
      "description": "Registered source role.",
      "type": "String",
      "required": true,
      "default_value": null
    }
  ],
  "return_value": null
}

CLI 命令

svc_call Display SetActiveSourceRole {"OutputName":null,"Role":null}

`GetActiveRole`

描述

Get the active source role for one display output. Returns empty string when no source is active.

执行要求

是否需要调度器: 需要

参数

OutputName
- 类型: String
- 是否必填: 可选
- 默认值: ""
- 描述: Display output name, for example Output0. Empty string uses the first output.

返回值

类型: String
描述: Active source role, or an empty string when no source is active.

Schema JSON

展开查看 JSON


{
  "name": "GetActiveRole",
  "description": "Get the active source role for one display output. Returns empty string when no source is active.",
  "require_scheduler": true,
  "default_timeout_ms": null,
  "parameters": [
    {
      "name": "OutputName",
      "description": "Display output name, for example Output0. Empty string uses the first output.",
      "type": "String",
      "required": false,
      "default_value": ""
    }
  ],
  "return_value": {
    "type": "String",
    "description": "Active source role, or an empty string when no source is active."
  }
}

CLI 命令

svc_call Display GetActiveRole {"OutputName":null}

`GetSourceRoles`

描述

Get registered display source roles, de-duplicated in first-registration order.

执行要求

是否需要调度器: 不需要

参数

无。

返回值

类型: Array
描述: Example: ["gui","video"]

Schema JSON

展开查看 JSON


{
  "name": "GetSourceRoles",
  "description": "Get registered display source roles, de-duplicated in first-registration order.",
  "require_scheduler": false,
  "default_timeout_ms": null,
  "parameters": [],
  "return_value": {
    "type": "Array",
    "description": "Example: [\"gui\",\"video\"]"
  }
}

CLI 命令

svc_call Display GetSourceRoles

`SetTouchGestureConfig`

描述

Configure touch gesture detection for one output. Example config: {"enabled":false,"detect_period_ms":20,"direction_lock_enabled":true,"release_debounce_ms":40,"threshold":{"direction_vertical":0,"direction_horizon":0,"direction_angle":45,"horizontal_edge":0,"vertical_edge":0,"duration_short_ms":220,"speed_slow_px_per_ms":6.000000238418579E-1}}

执行要求

是否需要调度器: 不需要

参数

OutputId
- 类型: Number
- 是否必填: 必填
- 描述: Runtime Display output id from GetOutputs().
Config
- 类型: Object
- 是否必填: 可选
- 默认值: {"enabled":false,"detect_period_ms":20,"direction_lock_enabled":true,"release_debounce_ms":40,"threshold":{"direction_vertical":0,"direction_horizon":0,"direction_angle":45,"horizontal_edge":0,"vertical_edge":0,"duration_short_ms":220,"speed_slow_px_per_ms":6.000000238418579E-1}}
- 描述: Gesture configuration object. Zero threshold fields use output defaults.

Schema JSON

展开查看 JSON


{
  "name": "SetTouchGestureConfig",
  "description": "Configure touch gesture detection for one output. Example config: {\"enabled\":false,\"detect_period_ms\":20,\"direction_lock_enabled\":true,\"release_debounce_ms\":40,\"threshold\":{\"direction_vertical\":0,\"direction_horizon\":0,\"direction_angle\":45,\"horizontal_edge\":0,\"vertical_edge\":0,\"duration_short_ms\":220,\"speed_slow_px_per_ms\":6.000000238418579E-1}}",
  "require_scheduler": false,
  "default_timeout_ms": null,
  "parameters": [
    {
      "name": "OutputId",
      "description": "Runtime Display output id from GetOutputs().",
      "type": "Number",
      "required": true,
      "default_value": null
    },
    {
      "name": "Config",
      "description": "Gesture configuration object. Zero threshold fields use output defaults.",
      "type": "Object",
      "required": false,
      "default_value": {
        "enabled": false,
        "detect_period_ms": 20,
        "direction_lock_enabled": true,
        "release_debounce_ms": 40,
        "threshold": {
          "direction_vertical": 0,
          "direction_horizon": 0,
          "direction_angle": 45,
          "horizontal_edge": 0,
          "vertical_edge": 0,
          "duration_short_ms": 220,
          "speed_slow_px_per_ms": 0.6000000238418579
        }
      }
    }
  ],
  "return_value": null
}

CLI 命令

svc_call Display SetTouchGestureConfig {"OutputId":null,"Config":null}

`GetTouchGestureConfig`

描述

Get touch gesture config for one output.

执行要求

是否需要调度器: 不需要

参数

OutputId
- 类型: Number
- 是否必填: 必填
- 描述: Runtime Display output id from GetOutputs().

返回值

类型: Object
描述: Example: {"enabled":false,"detect_period_ms":20,"direction_lock_enabled":true,"release_debounce_ms":40,"threshold":{"direction_vertical":0,"direction_horizon":0,"direction_angle":45,"horizontal_edge":0,"vertical_edge":0,"duration_short_ms":220,"speed_slow_px_per_ms":6.000000238418579E-1}}

Schema JSON

展开查看 JSON


{
  "name": "GetTouchGestureConfig",
  "description": "Get touch gesture config for one output.",
  "require_scheduler": false,
  "default_timeout_ms": null,
  "parameters": [
    {
      "name": "OutputId",
      "description": "Runtime Display output id from GetOutputs().",
      "type": "Number",
      "required": true,
      "default_value": null
    }
  ],
  "return_value": {
    "type": "Object",
    "description": "Example: {\"enabled\":false,\"detect_period_ms\":20,\"direction_lock_enabled\":true,\"release_debounce_ms\":40,\"threshold\":{\"direction_vertical\":0,\"direction_horizon\":0,\"direction_angle\":45,\"horizontal_edge\":0,\"vertical_edge\":0,\"duration_short_ms\":220,\"speed_slow_px_per_ms\":6.000000238418579E-1}}"
  }
}

CLI 命令

svc_call Display GetTouchGestureConfig {"OutputId":null}

`SetBacklightBrightness`

描述

Set backlight brightness percentage for one display output.

执行要求

是否需要调度器: 需要

参数

OutputId
- 类型: Number
- 是否必填: 必填
- 描述: Runtime Display output id from GetOutputs().
Brightness
- 类型: Number
- 是否必填: 必填
- 描述: Backlight brightness percentage in range [0, 100].

Schema JSON

展开查看 JSON


{
  "name": "SetBacklightBrightness",
  "description": "Set backlight brightness percentage for one display output.",
  "require_scheduler": true,
  "default_timeout_ms": null,
  "parameters": [
    {
      "name": "OutputId",
      "description": "Runtime Display output id from GetOutputs().",
      "type": "Number",
      "required": true,
      "default_value": null
    },
    {
      "name": "Brightness",
      "description": "Backlight brightness percentage in range [0, 100].",
      "type": "Number",
      "required": true,
      "default_value": null
    }
  ],
  "return_value": null
}

CLI 命令

svc_call Display SetBacklightBrightness {"OutputId":null,"Brightness":null}

`GetBacklightBrightness`

描述

Get backlight brightness percentage for one display output.

执行要求

是否需要调度器: 需要

参数

OutputId
- 类型: Number
- 是否必填: 必填
- 描述: Runtime Display output id from GetOutputs().

返回值

类型: Number
描述: Backlight brightness percentage in range [0, 100].

Schema JSON

展开查看 JSON


{
  "name": "GetBacklightBrightness",
  "description": "Get backlight brightness percentage for one display output.",
  "require_scheduler": true,
  "default_timeout_ms": null,
  "parameters": [
    {
      "name": "OutputId",
      "description": "Runtime Display output id from GetOutputs().",
      "type": "Number",
      "required": true,
      "default_value": null
    }
  ],
  "return_value": {
    "type": "Number",
    "description": "Backlight brightness percentage in range [0, 100]."
  }
}

CLI 命令

svc_call Display GetBacklightBrightness {"OutputId":null}

`SetBacklightOnOff`

描述

Turn the backlight on or off for one display output.

执行要求

是否需要调度器: 需要

参数

OutputId
- 类型: Number
- 是否必填: 必填
- 描述: Runtime Display output id from GetOutputs().
On
- 类型: Boolean
- 是否必填: 必填
- 描述: True to turn on the backlight, false to turn it off.

Schema JSON

展开查看 JSON


{
  "name": "SetBacklightOnOff",
  "description": "Turn the backlight on or off for one display output.",
  "require_scheduler": true,
  "default_timeout_ms": null,
  "parameters": [
    {
      "name": "OutputId",
      "description": "Runtime Display output id from GetOutputs().",
      "type": "Number",
      "required": true,
      "default_value": null
    },
    {
      "name": "On",
      "description": "True to turn on the backlight, false to turn it off.",
      "type": "Boolean",
      "required": true,
      "default_value": null
    }
  ],
  "return_value": null
}

CLI 命令

svc_call Display SetBacklightOnOff {"OutputId":null,"On":null}

`GetBacklightOnOff`

描述

Get whether the backlight is enabled for one display output.

执行要求

是否需要调度器: 需要

参数

OutputId
- 类型: Number
- 是否必填: 必填
- 描述: Runtime Display output id from GetOutputs().

返回值

类型: Boolean
描述: True when backlight is enabled, false otherwise.

Schema JSON

展开查看 JSON


{
  "name": "GetBacklightOnOff",
  "description": "Get whether the backlight is enabled for one display output.",
  "require_scheduler": true,
  "default_timeout_ms": null,
  "parameters": [
    {
      "name": "OutputId",
      "description": "Runtime Display output id from GetOutputs().",
      "type": "Number",
      "required": true,
      "default_value": null
    }
  ],
  "return_value": {
    "type": "Boolean",
    "description": "True when backlight is enabled, false otherwise."
  }
}

CLI 命令

svc_call Display GetBacklightOnOff {"OutputId":null}

`LoadData`

描述

Load persisted Display state. OutputId 0 loads all backlight-bound outputs.

执行要求

是否需要调度器: 需要

参数

OutputId
- 类型: Number
- 是否必填: 可选
- 默认值: 0E0
- 描述: Runtime Display output id from GetOutputs(), or 0 for all outputs.

Schema JSON

展开查看 JSON


{
  "name": "LoadData",
  "description": "Load persisted Display state. OutputId 0 loads all backlight-bound outputs.",
  "require_scheduler": true,
  "default_timeout_ms": null,
  "parameters": [
    {
      "name": "OutputId",
      "description": "Runtime Display output id from GetOutputs(), or 0 for all outputs.",
      "type": "Number",
      "required": false,
      "default_value": 0.0
    }
  ],
  "return_value": null
}

CLI 命令

svc_call Display LoadData {"OutputId":null}

`ResetData`

描述

Reset persisted Display state. OutputId 0 resets all backlight-bound outputs.

执行要求

是否需要调度器: 需要

参数

OutputId
- 类型: Number
- 是否必填: 可选
- 默认值: 0E0
- 描述: Runtime Display output id from GetOutputs(), or 0 for all outputs.

Schema JSON

展开查看 JSON


{
  "name": "ResetData",
  "description": "Reset persisted Display state. OutputId 0 resets all backlight-bound outputs.",
  "require_scheduler": true,
  "default_timeout_ms": null,
  "parameters": [
    {
      "name": "OutputId",
      "description": "Runtime Display output id from GetOutputs(), or 0 for all outputs.",
      "type": "Number",
      "required": false,
      "default_value": 0.0
    }
  ],
  "return_value": null
}

CLI 命令

svc_call Display ResetData {"OutputId":null}

事件

`SourceStateChanged`

描述

A display source state changed relative to an output.

执行要求

是否需要调度器: 不需要

参数

SourceName
- 类型: String
- 描述: Source name.
OutputName
- 类型: String
- 描述: Output name, or empty string for source-global changes.
State
- 类型: String
- 描述: New source state.

Schema JSON

展开查看 JSON


{
  "name": "SourceStateChanged",
  "description": "A display source state changed relative to an output.",
  "require_scheduler": false,
  "items": [
    {
      "name": "SourceName",
      "description": "Source name.",
      "type": "String"
    },
    {
      "name": "OutputName",
      "description": "Output name, or empty string for source-global changes.",
      "type": "String"
    },
    {
      "name": "State",
      "description": "New source state.",
      "type": "String"
    }
  ]
}

CLI 命令

svc_subscribe Display SourceStateChanged

`ActiveSourceChanged`

描述

The active source for an output changed.

执行要求

是否需要调度器: 不需要

参数

OutputName
- 类型: String
- 描述: Output name.
SourceName
- 类型: String
- 描述: Active source name, or empty string when cleared.

Schema JSON

展开查看 JSON


{
  "name": "ActiveSourceChanged",
  "description": "The active source for an output changed.",
  "require_scheduler": false,
  "items": [
    {
      "name": "OutputName",
      "description": "Output name.",
      "type": "String"
    },
    {
      "name": "SourceName",
      "description": "Active source name, or empty string when cleared.",
      "type": "String"
    }
  ]
}

CLI 命令

svc_subscribe Display ActiveSourceChanged

`OutputRegistered`

描述

A dynamic display output was registered.

执行要求

是否需要调度器: 不需要

参数

Info
- 类型: Object
- 描述: Registered output info.

Schema JSON

展开查看 JSON


{
  "name": "OutputRegistered",
  "description": "A dynamic display output was registered.",
  "require_scheduler": false,
  "items": [
    {
      "name": "Info",
      "description": "Registered output info.",
      "type": "Object"
    }
  ]
}

CLI 命令

svc_subscribe Display OutputRegistered

`OutputUnregistered`

描述

A dynamic display output was unregistered.

执行要求

是否需要调度器: 不需要

参数

OutputName
- 类型: String
- 描述: Display output name.

Schema JSON

展开查看 JSON


{
  "name": "OutputUnregistered",
  "description": "A dynamic display output was unregistered.",
  "require_scheduler": false,
  "items": [
    {
      "name": "OutputName",
      "description": "Display output name.",
      "type": "String"
    }
  ]
}

CLI 命令

svc_subscribe Display OutputUnregistered

`TouchGesture`

描述

A display output touch gesture changed state.

执行要求

是否需要调度器: 不需要

参数

Info
- 类型: Object
- 描述: Gesture event payload.

Schema JSON

展开查看 JSON


{
  "name": "TouchGesture",
  "description": "A display output touch gesture changed state.",
  "require_scheduler": false,
  "items": [
    {
      "name": "Info",
      "description": "Gesture event payload.",
      "type": "Object"
    }
  ]
}

CLI 命令

svc_subscribe Display TouchGesture

`BacklightBrightnessChanged`

描述

The backlight brightness for an output changed.

执行要求

是否需要调度器: 需要

参数

OutputId
- 类型: Number
- 描述: Runtime Display output id.
OutputName
- 类型: String
- 描述: Output name.
Brightness
- 类型: Number
- 描述: Current target backlight brightness percentage [0, 100].

Schema JSON

展开查看 JSON


{
  "name": "BacklightBrightnessChanged",
  "description": "The backlight brightness for an output changed.",
  "require_scheduler": true,
  "items": [
    {
      "name": "OutputId",
      "description": "Runtime Display output id.",
      "type": "Number"
    },
    {
      "name": "OutputName",
      "description": "Output name.",
      "type": "String"
    },
    {
      "name": "Brightness",
      "description": "Current target backlight brightness percentage [0, 100].",
      "type": "Number"
    }
  ]
}

CLI 命令

svc_subscribe Display BacklightBrightnessChanged

`BacklightOnOffChanged`

描述

The backlight on/off state for an output changed.

执行要求

是否需要调度器: 需要

参数

OutputId
- 类型: Number
- 描述: Runtime Display output id.
OutputName
- 类型: String
- 描述: Output name.
IsOn
- 类型: Boolean
- 描述: Whether display backlight is currently on. True if on, false if off.

Schema JSON

展开查看 JSON


{
  "name": "BacklightOnOffChanged",
  "description": "The backlight on/off state for an output changed.",
  "require_scheduler": true,
  "items": [
    {
      "name": "OutputId",
      "description": "Runtime Display output id.",
      "type": "Number"
    },
    {
      "name": "OutputName",
      "description": "Output name.",
      "type": "String"
    },
    {
      "name": "IsOn",
      "description": "Whether display backlight is currently on. True if on, false if off.",
      "type": "Boolean"
    }
  ]
}

CLI 命令

svc_subscribe Display BacklightOnOffChanged

Display 服务

服务接口

函数

GetOutputs

描述

执行要求

参数

返回值

Schema JSON

CLI 命令

GetSources

描述

执行要求

参数

返回值

Schema JSON

CLI 命令

RegisterSource

描述

执行要求

参数

返回值

Schema JSON

CLI 命令

UnregisterSource

描述

执行要求

参数

Schema JSON

CLI 命令

RequestOutput

描述

执行要求

参数

Schema JSON

CLI 命令

ReleaseOutput

描述

执行要求

参数

Schema JSON

CLI 命令

SetActiveSource

描述

执行要求

参数

Schema JSON

CLI 命令

GetActiveSource

描述

执行要求

参数

返回值

Schema JSON

CLI 命令

SetActiveSourceRole

描述

执行要求

参数

Schema JSON

CLI 命令

GetActiveRole

描述

执行要求

参数

返回值

Schema JSON

CLI 命令

GetSourceRoles

描述

执行要求

参数

返回值

Schema JSON

CLI 命令

SetTouchGestureConfig

描述

执行要求

参数

Schema JSON

`GetOutputs`

`GetSources`

`RegisterSource`

`UnregisterSource`

`RequestOutput`

`ReleaseOutput`

`SetActiveSource`

`GetActiveSource`

`SetActiveSourceRole`

`GetActiveRole`

`GetSourceRoles`

`SetTouchGestureConfig`

`GetTouchGestureConfig`

`SetBacklightBrightness`

`GetBacklightBrightness`

`SetBacklightOnOff`

`GetBacklightOnOff`

`LoadData`

`ResetData`

`SourceStateChanged`

`ActiveSourceChanged`

`OutputRegistered`

`OutputUnregistered`