PCMFlowG722 wideband (HD voice) codec for ESP32
Summary
PCMFlowG722 adds a G.722 wideband codec add-on to PCMFlow for ESP32-based devices, enabling real-time HD voice over ESP-NOW and other network links. The core is the public-domain sippy/libg722, wrapped behind PCMFlow interfaces with Mode 1 (64 kbps) currently supported and a small footprint. Licensing is permissive (MIT-compatible) for PCMFlowG722 and Public Domain for the core.