Media Kit API参考 ArkTS API @ohos.multimedia.media (媒体服务) @ohos.multimedia.media (媒体服务)(系统接口) multimedia SoundPool (音频池) SoundPool (音频池)(系统接口) C API 模块 AVPlayer AVScreenCapture 头文件 native_avscreen_capture.h native_avscreen_capture_base.h native_avscreen_capture_errors.h avplayer.h avplayer_base.h 结构体 AVPlayerCallback OH_AudioBuffer OH_AudioCaptureInfo OH_AudioEncInfo OH_AudioInfo OH_AVScreenCaptureCallback OH_AVScreenCaptureConfig OH_RecorderInfo OH_Rect OH_VideoCaptureInfo OH_VideoEncInfo OH_VideoInfo 错误码 Media错误码