capture_mirror library

The capture mirror's CONSUMER, on its own entry point.

🔴 Separate from miniav_web.dart on purpose. That barrel is a Flutter web plugin and pulls package:flutter in with it; this path is meant to be drained from a WORKER, whose payload is compiled by dart2js with no Flutter at all. Dart's import graph is per-LIBRARY, so importing this one costs nothing but dart:typed_data — importing the barrel would not compile.

The producer is MiniAV_Audio_SetCaptureMirror in miniav_c; the wiring that allocates the ring and attaches it is MiniAVWebAudioInputContext.openCaptureMirror.

Classes

CaptureMirrorReader

Reads the mirror. One instance per capture; SINGLE CONSUMER by contract — the producer's cursor protocol is SPSC and two readers would both advance the read cursor, each stealing frames the other already claimed.

MirrorDrain

What one drain produced.

MirrorHeader

u32 header slots, mirroring MINIAV_MIRROR_HEADER_U32 in the C producer.