From 1179bb703e35543e15401f05a4cc81cc389756ba Mon Sep 17 00:00:00 2001 From: Leo Izen Date: Tue, 4 Apr 2023 10:16:21 -0400 Subject: [PATCH] avcodec/libjxlenc: use reciprocol gamma for GAMMA22 and GAMMA28 libjxl rejects JxlColorEncoding->gamma 2.2f or 2.8f and expects 1/2.2f or 1/2.8f, respectively. Signed-off-by: Leo Izen --- libavcodec/libjxlenc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/libjxlenc.c b/libavcodec/libjxlenc.c index 897452f575..d707f3a61b 100644 --- a/libavcodec/libjxlenc.c +++ b/libavcodec/libjxlenc.c @@ -335,11 +335,11 @@ static int libjxl_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFra break; case AVCOL_TRC_GAMMA22: jxl_color.transfer_function = JXL_TRANSFER_FUNCTION_GAMMA; - jxl_color.gamma = 2.2; + jxl_color.gamma = 1/2.2f; break; case AVCOL_TRC_GAMMA28: jxl_color.transfer_function = JXL_TRANSFER_FUNCTION_GAMMA; - jxl_color.gamma = 2.8; + jxl_color.gamma = 1/2.8f; break; default: if (pix_desc->flags & AV_PIX_FMT_FLAG_FLOAT) {