[FFmpeg-cvslog] avfilter/vf_v360: fix fov calculation for stereographic output

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Tue Sep 10 23:34:53 2019 +0200| [ccaeabd092d35d9fab3523c456739f0865c8aed8] | committer: Paul B Mahol

avfilter/vf_v360: fix fov calculation for stereographic output

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ccaeabd092d35d9fab3523c456739f0865c8aed8
---

 libavfilter/vf_v360.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavfilter/vf_v360.c b/libavfilter/vf_v360.c
index 245b4e6707..72cb1d82b8 100644
--- a/libavfilter/vf_v360.c
+++ b/libavfilter/vf_v360.c
@@ -1410,8 +1410,8 @@ static void stereographic_to_xyz(const V360Context *s,
                                  int i, int j, int width, int height,
                                  float *vec)
 {
-    const float x = ((2.f * i) / width  - 1.f) * (s->h_fov / 180.f) * M_PI;
-    const float y = ((2.f * j) / height - 1.f) * (s->v_fov /  90.f) * M_PI_2;
+    const float x = ((2.f * i) / width  - 1.f) * (s->h_fov / 180.f);
+    const float y = ((2.f * j) / height - 1.f) * (s->v_fov / 180.f);
     const float xy = x * x + y * y;
 
     vec[0] = 2.f * x / (1.f + xy);