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lavu/tx: require output argument to match input for inplace transforms 

This simplifies some assembly code by a lot, by either saving a branch
or saving an entire duplicated function.
This commit is contained in:
Lynne 2021-02-26 05:40:07 +01:00
parent e937457b7b
commit 10341743d2
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GPG Key ID: A2FEA5F03F034464
2 changed files with 2 additions and 3 deletions
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4
libavutil/tx.h
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@ -103,8 +103,8 @@ typedef void (*av_tx_fn)(AVTXContext *s, void *out, void *in, ptrdiff_t stride);
*/
enum AVTXFlags {
/**
* Performs an in-place transformation on the input. The output parameter
* to av_tn_fn() will be ignored. May be unsupported or slower for some
* Performs an in-place transformation on the input. The output argument
* of av_tn_fn() MUST match the input. May be unsupported or slower for some
* transform types.
*/
AV_TX_INPLACE = 1ULL << 0,

1
libavutil/tx_template.c
View File

@ -397,7 +397,6 @@ static void monolithic_fft(AVTXContext *s, void *_out, void *_in,
FFTComplex tmp;
int src, dst, *inplace_idx = s->inplace_idx;
out = in;
src = *inplace_idx++;
do {