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| author | Paul B Mahol <onemda@gmail.com> | 2023-04-27 22:47:31 +0200 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2023-04-27 22:53:13 +0200 |
| commit | 4e57a0f35a56a4524648530ae6fd9c7f7770d8ca (patch) | |
| tree | f0765d3b7c427d95218f4f5fb7ede65054c77a26 | |
| parent | 19148a5b9f44bed660258a5896d1d12d77d3d9ab (diff) | |
| download | ffmpeg-4e57a0f35a56a4524648530ae6fd9c7f7770d8ca.tar.gz | |
avfilter/afir_template: avoid multiplications if memcpy is enough
| -rw-r--r-- | libavfilter/afir_template.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/libavfilter/afir_template.c b/libavfilter/afir_template.c index 0f0500d8b3..7c6573eeec 100644 --- a/libavfilter/afir_template.c +++ b/libavfilter/afir_template.c @@ -294,6 +294,7 @@ static int fn(fir_quantum)(AVFilterContext *ctx, AVFrame *out, int ch, int ioffs const int nb_samples = FFMIN(min_part_size, out->nb_samples - offset); const int nb_segments = s->nb_segments[selir]; const float dry_gain = s->dry_gain; + const float wet_gain = s->wet_gain; for (int segment = 0; segment < nb_segments; segment++) { AudioFIRSegment *seg = &s->seg[selir][segment]; @@ -310,7 +311,9 @@ static int fn(fir_quantum)(AVFilterContext *ctx, AVFrame *out, int ch, int ioffs int j; seg->part_index[ch] = seg->part_index[ch] % nb_partitions; - if (min_part_size >= 8) { + if (dry_gain == 1.f) { + memcpy(src + input_offset, in, nb_samples * sizeof(*src)); + } else if (min_part_size >= 8) { #if DEPTH == 32 s->fdsp->vector_fmul_scalar(src + input_offset, in, dry_gain, FFALIGN(nb_samples, 4)); #else @@ -374,19 +377,19 @@ static int fn(fir_quantum)(AVFilterContext *ctx, AVFrame *out, int ch, int ioffs seg->part_index[ch] = (seg->part_index[ch] + 1) % nb_partitions; } - if (s->wet_gain == 1.f) + if (wet_gain == 1.f) return 0; if (min_part_size >= 8) { #if DEPTH == 32 - s->fdsp->vector_fmul_scalar(ptr, ptr, s->wet_gain, FFALIGN(nb_samples, 4)); + s->fdsp->vector_fmul_scalar(ptr, ptr, wet_gain, FFALIGN(nb_samples, 4)); #else - s->fdsp->vector_dmul_scalar(ptr, ptr, s->wet_gain, FFALIGN(nb_samples, 8)); + s->fdsp->vector_dmul_scalar(ptr, ptr, wet_gain, FFALIGN(nb_samples, 8)); #endif emms_c(); } else { for (int n = 0; n < nb_samples; n++) - ptr[n] *= s->wet_gain; + ptr[n] *= wet_gain; } return 0; |