Progressive decoding to be able to decode an image as soon as download begins.
渐进解码，下载开始即可开始解码。
2
I'll start with the decoding because it's the easiest. The FieldRenderer's decode method is as follows.
我先从解码开始，因为它是最容易的。
3
In a joint source-channel iterative decoder, the source variable length decoding adopts the lower complexity variable length decoding algorithm based on the twist braid grid to decode.