Scrcpy is an open-source desktop application that enables users to mirror the Android device's screen in real-time to a computer via USB (or through TCP/IP network). This tool is highly practical, serving not only for screen sharing but also for remote control of Android devices. Its implementation primarily relies on the Android Debug Bridge (ADB) tool.
Working Principle:
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ADB Connection:
- Scrcpy utilizes ADB to establish communication with the Android device. First, connect to the device via USB or Wi-Fi and initiate the ADB server.
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Video Data Stream:
- On the device, Scrcpy employs the
MediaProjectionAPI to capture the screen. The video data is then encoded by an encoder, with H.264 as the default format.
- On the device, Scrcpy employs the
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Data Transmission:
- The encoded video stream is transmitted to the computer through the ADB channel. Scrcpy receives this data stream on the host computer and decodes it.
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Display and Control:
- The decoded video stream is displayed as a window on the computer. Additionally, Scrcpy supports sending mouse and keyboard events from the computer to the Android device, enabling remote control functionality. These events are also sent to the device via ADB.
Performance Optimization:
- Scrcpy is designed with performance in mind to minimize latency and bandwidth usage. For instance, it allows users to adjust video quality and resolution to accommodate various network conditions and usage scenarios.
- It further enhances efficiency by reducing color space conversions and optimizing data transmission methods.
Application Examples:
- Remote Work: Users can operate office Android devices from home using their computers without complex device configuration.
- Game and App Testing: Developers and testers can test applications on the computer, particularly when frequent input or viewing the large screen is required.
These features make Scrcpy a powerful and flexible tool capable of handling diverse screen mirroring and remote control requirements.