RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

lavfi/vf_v360: factorize vector computation for barrelsplit

This commit is contained in:
Anton Khirnov 2022-05-18 11:39:02 +02:00
parent 58bb83c7ed
commit 82784ddf33
1 changed files with 4 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
libavfilter/vf_v360.c
View File

@ -3765,6 +3765,7 @@ static int barrelsplit_to_xyz(const V360Context *s,
const float scaleh = s->fout_pad > 0 ? 1.f - s->fout_pad / (height / 4.f) : 1.f - s->out_pad;
const int face = floorf(y * 4.f);
const float dir_vert = (face == 1 || face == 3) ? 1.0f : -1.0f;
float uf, vf;
uf = x * 3.f - 2.f;
@ -3774,36 +3775,23 @@ static int barrelsplit_to_xyz(const V360Context *s,
vf = y * 2.f;
uf = 1.f - uf;
vf = 0.5f - vf;
l_x = (0.5f - uf) / scalew;
l_y = -0.5f;
l_z = (0.5f - vf) / scaleh;
break;
case 1:
vf = y * 2.f;
uf = 1.f - uf;
vf = 1.f - (vf - 0.5f);
l_x = (0.5f - uf) / scalew;
l_y = 0.5f;
l_z = (-0.5f + vf) / scaleh;
break;
case 2:
vf = y * 2.f - 0.5f;
vf = 1.f - (1.f - vf);
l_x = (0.5f - uf) / scalew;
l_y = -0.5f;
l_z = (0.5f - vf) / scaleh;
break;
case 3:
vf = y * 2.f - 1.5f;
l_x = (0.5f - uf) / scalew;
l_y = 0.5f;
l_z = (-0.5f + vf) / scaleh;
break;
}
l_x = (0.5f - uf) / scalew;
l_y = 0.5f * dir_vert;
l_z = (vf - 0.5f) * dir_vert / scaleh;
}
vec[0] = l_x;