ffmpeg | branch: master | Leo Izen <[email protected]> | Wed Jan 18 09:16:37 2023 -0500| [9d5e66942c5bae578926e29efebec348199798df] | committer: Jan Ekström
avcodec/libjxldec: fix gamma22 and gamma28 recognition Gamma 2.2 and Gamma 2.8 are tagged in the file as 0.45455 and 0.35714, respectively (i.e. 1/2.2 and 1/2.8). Trying to identify them as 2.2 and 2.8 instead of these values will cause the transfer function to not properly be recognized. This patch fixes this. > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=9d5e66942c5bae578926e29efebec348199798df --- libavcodec/libjxldec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/libjxldec.c b/libavcodec/libjxldec.c index de48bea4b2..c85cfa3d69 100644 --- a/libavcodec/libjxldec.c +++ b/libavcodec/libjxldec.c @@ -167,9 +167,9 @@ static enum AVColorTransferCharacteristic libjxl_get_trc(void *avctx, const JxlC case JXL_TRANSFER_FUNCTION_DCI: return AVCOL_TRC_SMPTE428; case JXL_TRANSFER_FUNCTION_HLG: return AVCOL_TRC_ARIB_STD_B67; case JXL_TRANSFER_FUNCTION_GAMMA: - if (jxl_color->gamma > 2.199 && jxl_color->gamma < 2.201) + if (jxl_color->gamma > 0.45355 && jxl_color->gamma < 0.45555) return AVCOL_TRC_GAMMA22; - else if (jxl_color->gamma > 2.799 && jxl_color->gamma < 2.801) + else if (jxl_color->gamma > 0.35614 && jxl_color->gamma < 0.35814) return AVCOL_TRC_GAMMA28; else av_log(avctx, AV_LOG_WARNING, "Unsupported gamma transfer: %f\n", jxl_color->gamma); _______________________________________________ ffmpeg-cvslog mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
