ffmpeg | branch: master | Paul B Mahol <[email protected]> | Sat Sep 14 17:40:46 2019 +0200| [451cee662c379489f6f3ddeef6561aa201aa51b0] | committer: Paul B Mahol
avfilter/vf_v360: reduce by one cosf call less > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=451cee662c379489f6f3ddeef6561aa201aa51b0 --- libavfilter/vf_v360.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/libavfilter/vf_v360.c b/libavfilter/vf_v360.c index 39a96f1941..3be302d159 100644 --- a/libavfilter/vf_v360.c +++ b/libavfilter/vf_v360.c @@ -1827,9 +1827,14 @@ static void dfisheye_to_xyz(const V360Context *s, const float phi = M_PI + atan2f(vf, uf * m); const float theta = m * M_PI_2 * (1.f - hypotf(uf, vf)); - vec[0] = cosf(theta) * cosf(phi); - vec[1] = cosf(theta) * sinf(phi); - vec[2] = sinf(theta); + const float sin_phi = sinf(phi); + const float cos_phi = cosf(phi); + const float sin_theta = sinf(theta); + const float cos_theta = cosf(theta); + + vec[0] = cos_theta * cos_phi; + vec[1] = cos_theta * sin_phi; + vec[2] = sin_theta; normalize_vector(vec); } _______________________________________________ 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".
