ffmpeg | branch: master | Paul B Mahol <[email protected]> | Sat Sep 14 13:33:24 2019 +0200| [f78abca0c2851c743cbe077be9c905ebbc0ce1e8] | committer: Paul B Mahol
avfilter/vf_v360: call tanf() once > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f78abca0c2851c743cbe077be9c905ebbc0ce1e8 --- libavfilter/vf_v360.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/libavfilter/vf_v360.c b/libavfilter/vf_v360.c index 98cef5902e..923ccd6339 100644 --- a/libavfilter/vf_v360.c +++ b/libavfilter/vf_v360.c @@ -2142,11 +2142,11 @@ static int allocate_plane(V360Context *s, int sizeof_uv, int sizeof_ker, int p) static void fov_from_dfov(V360Context *s, float w, float h) { - const float d_angle = 0.5 * FFMIN(s->d_fov, 359.f) * M_PI / 180.f; + const float da = tanf(0.5 * FFMIN(s->d_fov, 359.f) * M_PI / 180.f); const float d = hypotf(w, h); - s->h_fov = atan2f(tanf(d_angle) * w, d) * 360.f / M_PI; - s->v_fov = atan2f(tanf(d_angle) * h, d) * 360.f / M_PI; + s->h_fov = atan2f(da * w, d) * 360.f / M_PI; + s->v_fov = atan2f(da * h, d) * 360.f / M_PI; if (s->h_fov < 0.f) s->h_fov += 360.f; _______________________________________________ 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".
