unsigned long long old_data_bytes = h->length * sizes[h->type];
Comparison between error-diffusion dithering and ordered dithering. Left to right: error-diffusion, ordered.，更多细节参见旺商聊官方下载
，这一点在im钱包官方下载中也有详细论述
These aren't contrived scenarios invented by test authors in total vacuum. They're consequences of the spec's design and reflect real world bugs.，详情可参考safew官方下载
Фото: Илья Наймушин / РИА Новости