Input Source Project

Introduction

The input source app is an OpenHarmony TV sample project with the following core capabilities:

• HDMI / AV / DTV source display and switching.
• Signal status detection, no-signal handling, and auto recovery.
• Lifecycle linkage for binding, unbinding, and event publishing.
• TV-specific API integration (@ohos.tvservice.*) and native rendering cooperation.

The application entry is located at entry/src/main/ets/entryability/EntryAbility.ets. The main input source page is entry/src/main/ets/pages/Index.ets. The HDMI page is entry/src/main/ets/pages/HdmiPage.ets. Native extensions are under entry/src/main/cpp.

Usage:

1. Install and launch the app, then grant required source-related permissions.
2. Open the index page to view available sources and switch between them.
3. Enter HDMI/DTV pages to trigger signal check and playback-state handling automatically.
4. If no signal is detected, the page shows no-signal hints and supports returning to source list.

Screenshots

Project Structure

entry/src/main/ets/
|---entryability/
|   |---EntryAbility.ets             // Main app entry Ability
|---common
|   |---AutomatedSearch.ets          // Auto search logic
|   |---DeleteChannel.ets            // Channel deletion logic
|   |---DtvNoChannel.ets             // No-channel state
|   |---PointerUtil.ets              // Pointer style utility
|---model
|   |---BaseModel.ets                // Base business model
|   |---InputSourceModel.ets         // Input source model
|---manager
|   |---SourceManager.ets            // Source manager
|   |---PlayerManager.ets            // Playback and event manager
|   |---DtvManager.ets               // DTV business manager
|---pages
|   |---Index.ets                    // Input source index page
|   |---HdmiPage.ets                 // HDMI page
|   |---SearchPage.ets               // Search page
|   |---NoSignal.ets                 // No-signal page
|---controller
|   |---SourceListController.ets     // Source list controller
|---utils
|   |---InputSourceUtil.ets          // Input source utility
|   |---SettingUtil.ets              // Settings read/write and event publish
|   |---KeyEvent.ets                 // Key event injection
|---sdk
|   |---DtvSdk.ets                   // TV-specific declarations

entry/src/ohosTest/ets/test/
|---List.test.ets                    // Test entry
|---*.test.ets                       // Hypium unit and scenario tests

Implementation Details

• Main page logic is in Index.ets, including source entrance display, focus management, and page routing.
• HDMI logic is in HdmiPage.ets:
  • Binds source and checks signal after page enters.
  • Switches among playback/search/no-signal states by signal status.
  • Handles Back key and CEC-related behavior.
• Source/device capabilities are in SourceManager.ets:
  • Queries supported/available sources and timing info.
  • Manages source-related listeners.
• Playback/event publishing logic is in PlayerManager.ets:
  • Unified bind/unbind entry.
  • Unified play-start/play-end event publishing.
• DTV core logic is in DtvManager.ets, including search, channel list, and channel operations.

Permissions

Permission	Description	Level
ohos.permission.MANAGE_MISSIONS	Mission stack management	system_basic
ohos.permission.MANAGE_SECURE_SETTINGS	Secure settings management	system_basic
ohos.permission.INTERNET	Network access	normal
ohos.permission.ACCESS_NOTIFICATION_POLICY	Notification policy access	system_basic
ohos.permission.MODIFY_AUDIO_SETTINGS	Audio settings modification	system_basic
ohos.permission.MANAGE_AUDIO_CONFIG	Audio configuration management	system_basic

Dependencies

• OpenHarmony APIs (ArkUI / AbilityKit / BasicServicesKit / InputKit, etc.)
• Native build chain (CMakeLists.txt + libentry.so)
• TV-specific declarations (entry/src/main/ets/sdk/DtvSdk.ets) for @ohos.tvservice.* typing
• Test framework: Hypium (entry/src/ohosTest)

Constraints

1. This sample is intended for OpenHarmony TV scenarios and should run on devices/images with TV input-source capabilities.
2. This sample uses the Stage model, and the project keeps compileSdkVersion/compatibleSdkVersion/targetSdkVersion at 18.
3. DevEco Studio 5.0 Release or above is recommended for build and run.
4. Some system-level capabilities require local signing setup according to your device policy before deployment.

Download

To download only this project, run:

git init
git config core.sparsecheckout true
echo code/SystemFeature/TV/TVInputSource > .git/info/sparse-checkout
git remote add origin https://gitcode.com/openharmony/applications_app_samples.git
git pull origin master