本文主要是介绍[AV1] interpolation，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
在AV1中，帧间预测的插值滤波一共定义了以下五种类型
| interpolation filter | 名称 |
|---|---|
| 0 | EIGHTTAP_REGULAR |
| 1 | EIGHTTAP_SMOOTH |
| 2 | MULTITAP_SHARP |
| 3 | BILINEAR |
| 4 | switchabe |
typedef enum ATTRIBUTE_PACKED {EIGHTTAP_REGULAR,EIGHTTAP_SMOOTH,MULTITAP_SHARP,BILINEAR,// Encoder side only filtersMULTITAP_SHARP2,INTERP_FILTERS_ALL,SWITCHABLE_FILTERS = BILINEAR,SWITCHABLE = SWITCHABLE_FILTERS + 1, /* the last switchable one */EXTRA_FILTERS = INTERP_FILTERS_ALL - SWITCHABLE_FILTERS,INTERP_INVALID = 0xff,
} InterpFilter;
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