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lavu/tx: mention FFT output is not normalized

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Not even FFTW's output is normalized.
This should prevent at least some users from complaining that doing a forward
transform followed by an inverse transform has a mismatching output to the
original input.
This commit is contained in:
Lynne
2020-02-08 23:06:09 +00:00
parent 5181f491ee
commit d500eff3cc
1 changed files with 1 additions and 1 deletions
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2
libavutil/tx.h
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@@ -35,7 +35,7 @@ typedef struct AVComplexDouble {
enum AVTXType { enum AVTXType {
/** /**
* Standard complex to complex FFT with sample data type AVComplexFloat. * Standard complex to complex FFT with sample data type AVComplexFloat.
* Scaling currently unsupported * Output is not 1/len normalized. Scaling currently unsupported.
*/ */
AV_TX_FLOAT_FFT = 0, AV_TX_FLOAT_FFT = 0,
/** /**