C++ HM编码器16.4模式为2

我想确定CU是否使用HEVC参考软件HM 16.4编码器进行了帧内或帧间编码

在TEncSlice.cpp中，压缩CTU后，使用m_pcCuEncoder->compressCtu pCtu；，我应该能够判断CU是内部编码还是内部编码

因此，我检查了TComDataCU*pCtu的m_pePredMode阵列：

代码的输出首先给出了预期的结果。对于第一帧，我首先只得到一个MODE_intra。但对于某些CTU，我也得到了两个，这对我来说没有意义，因为2不应该描述预测模式

类似地，在帧间p帧中，我主要得到零模式_inter，一些一模式_INTRA，这是正常的。但我也得到了一些二。示例输出的一部分如下所示，每行对应一个64x64 CTU：

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有人知道这些是什么意思吗？我检查了这是否与跳过模式相对应，但跳过标志和2s之间没有相关性。

好吧，我得到了这个问题的答案：

如果CU具有模式2，这意味着CU未编码。这种情况下会发生这种情况，因为CU位于图片的边界之外

编码的序列分辨率为416x240，CTU大小为64x64。所以连续有6.5个CTU

这就解释了为什么每7个CTU，我就有2个模式

enum PredMode
{
MODE_INTER                 = 0,     ///< inter-prediction mode
MODE_INTRA                 = 1,     ///< intra-prediction mode
NUMBER_OF_PREDICTION_MODES = 2,
};

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