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Can the decoder be asked to skip decoding of non-reference pictures?

April 26, 2017decoder decoding pictures skip

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Can the decoder be asked to skip decoding of non-reference pictures?

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Yes, the decoder has the flexibility to skip the decoding of non-reference pictures. This has to be communicated via the inArgs to the decoder. We can use the skipNonRefPictures field in the inArgs for this. The supported values are: 0: Do not skip the pictures 1: Skip a non-reference Frame or Field 2: Skip a non-reference Top Field 3: Skip a non-reference Bottom Field. When the decoder is called with this field set to 1/2/3 it does not decode the picture if it is a non-reference picture; but it returns the number of bytes that were consumed to skip the current picture. This is helpful if the application needs to move the input pointer to the next NAL Unit.