stream-webrtc-android/org.webrtc/VideoFrameDrawer/drawFrame

drawFrame

open fun drawFrame(frame: VideoFrame, drawer: RendererCommon.GlDrawer)
open fun drawFrame(frame: VideoFrame, drawer: RendererCommon.GlDrawer, additionalRenderMatrix: Matrix)
open fun drawFrame(    frame: VideoFrame,     drawer: RendererCommon.GlDrawer,     @Nullable additionalRenderMatrix: Matrix,     viewportX: Int,     viewportY: Int,     viewportWidth: Int,     viewportHeight: Int)