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lavu/tx: clarify stride for RDFT transforms

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Lynne 2022-11-24 15:56:01 +01:00
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commit 93c30bd6f0
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libavutil/tx.h
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@ -75,7 +75,9 @@ enum AVTXType {
* the double variant, it's a 'double'. If scale is NULL, 1.0 will be used * the double variant, it's a 'double'. If scale is NULL, 1.0 will be used
* as a default. * as a default.
* *
* The stride parameter must be set to the size of a single sample in bytes. * For forward transforms (R2C), stride must be the spacing between two
* samples in bytes. For inverse transforms, the stride must be set
* to the spacing between two complex values in bytes.
* *
* The forward transform performs a real-to-complex DFT of N samples to * The forward transform performs a real-to-complex DFT of N samples to
* N/2+1 complex values. * N/2+1 complex values.