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| author | Lynne <dev@lynne.ee> | 2020-02-08 23:06:09 +0000 |
|---|---|---|
| committer | Lynne <dev@lynne.ee> | 2020-02-08 23:11:29 +0000 |
| commit | d500eff3cce7ab0c6f7101860b633ca955a9f85e (patch) | |
| tree | 70b838eeb591bf53e7a4654ed6a2c9950ddfb7c4 | |
| parent | 5181f491ee3688317e236130d79d91c940526aa9 (diff) | |
| download | ffmpeg-d500eff3cce7ab0c6f7101860b633ca955a9f85e.tar.gz | |
lavu/tx: mention FFT output is not normalized
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.
| -rw-r--r-- | libavutil/tx.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavutil/tx.h b/libavutil/tx.h index d6cdfdf9f2..8b405c0021 100644 --- a/libavutil/tx.h +++ b/libavutil/tx.h @@ -35,7 +35,7 @@ typedef struct AVComplexDouble { enum AVTXType { /** * 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, /** |