From 4cb989e83631c801718723ad95367fdd561e0ae0 Mon Sep 17 00:00:00 2001 From: Paul B Mahol Date: Sun, 28 Feb 2021 23:14:40 +0100 Subject: [PATCH] avcodec/exr: add fast path for case when powf() isn't needed --- libavcodec/exr.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/libavcodec/exr.c b/libavcodec/exr.c index 4559174ba2..640807cea9 100644 --- a/libavcodec/exr.c +++ b/libavcodec/exr.c @@ -1130,13 +1130,18 @@ static int decode_block(AVCodecContext *avctx, void *tdata, t.f = trc_func(t.f); *ptr_x++ = t; } - } else { + } else if (one_gamma != 1.f) { for (x = 0; x < xsize; x++) { t.i = bytestream_get_le32(&src); if (t.f > 0.0f && c < 3) /* avoid negative values */ t.f = powf(t.f, one_gamma); *ptr_x++ = t; } + } else { + for (x = 0; x < xsize; x++) { + t.i = bytestream_get_le32(&src); + *ptr_x++ = t; + } } } else if (s->pixel_type == EXR_HALF) { // 16-bit