paddedTopBorderCache [200][200]string
1L decoder, pair tokens。51吃瓜对此有专业解读
。业内人士推荐旺商聊官方下载作为进阶阅读
The script grabs the captured audio element, mutes it, sets playbackRate to 16 (the browser maximum), seeks to the beginning, and calls .play(). The browser, in its infinite eagerness to keep the buffer full ahead of the playback position, frantically fetches, decrypts, and feeds chunks into the SourceBuffer. Every single one of those chunks passes through the hooked appendBuffer and gets collected.，更多细节参见夫子
the backing store from the heap.