xue_hua_audio_linux 2.0.4

Linux implementation of the xue_hua_audio plugin, using GStreamer. / xue_hua_audio 插件的 Linux 实现，基于 GStreamer。

2.0.4

• update xue_hua_audio_platform_interface version to 2.0.4 .
• use new pigeon version generate code .

2.0.3

• update package version

2.0.2

• Raise the minimum Flutter version to 3.44.0. 最低 Flutter 版本提升至 3.44.0。

2.0.1

• update flutter version to 3.38.0 version

2.0.0

• Initial release: GStreamer playbin playback and autoaudiosrc ! level ! encoder ! filesink recording (WAV / Opus / AAC) with real-time amplitude from the level element. 首个版本：GStreamer 播放与录音（level 元素实时振幅）。
• Device management: GstDeviceMonitor enumeration, playbin audio-sink output selection (effective from the next setSource) and recorder source selection before start. 设备管理：GstDeviceMonitor 枚举、playbin 输出选择（自下一次 setSource 生效）与录音开始前的输入设备选择。