diff options
| author | Paul B Mahol <onemda@gmail.com> | 2019-09-14 14:33:24 +0300 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2019-09-14 14:33:24 +0300 |
| commit | f78abca0c2851c743cbe077be9c905ebbc0ce1e8 (patch) | |
| tree | 7b30c4038d4898f285e935f97399b454c5369460 /libavfilter/vf_v360.c | |
| parent | cb8d6a4e3ef39dff2522335021ecfde868c371f7 (diff) | |
avfilter/vf_v360: call tanf() once
Diffstat (limited to 'libavfilter/vf_v360.c')
| -rw-r--r-- | libavfilter/vf_v360.c | 6 |
1 files 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; |