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| author | Anton Khirnov <anton@khirnov.net> | 2022-05-19 15:36:44 +0200 |
|---|---|---|
| committer | Anton Khirnov <anton@khirnov.net> | 2022-05-24 13:41:24 +0200 |
| commit | fa26e17747bbc292d20da2ba7cb0f14d049c640c (patch) | |
| tree | 9ffbd516be69e138dc7111f10c6a0e6b5ca8a0e1 /libavfilter/vf_v360.c | |
| parent | 83a5ef51131ab1a9b22bf886f826ae899bc5ff66 (diff) | |
| download | ffmpeg-fa26e17747bbc292d20da2ba7cb0f14d049c640c.tar.gz | |
lavfi/vf_v360: implement output mask for barrelsplit
The top/bottom of the barrel are each coded as two semicircles inside a
square block in the frame. Mask out the parts of the square that lie
outside of these semicircles, so they are made transparent when
alpha_mask=1.
Fixes the other part of #9725.
Diffstat (limited to 'libavfilter/vf_v360.c')
| -rw-r--r-- | libavfilter/vf_v360.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libavfilter/vf_v360.c b/libavfilter/vf_v360.c index 0c6a1a7d25..55aa05c35c 100644 --- a/libavfilter/vf_v360.c +++ b/libavfilter/vf_v360.c @@ -3744,6 +3744,7 @@ static int barrelsplit_to_xyz(const V360Context *s, const float x = (i + 0.5f) / width; const float y = (j + 0.5f) / height; float l_x, l_y, l_z; + int ret; if (x < 2.f / 3.f) { const float scalew = s->fout_pad > 0 ? 1.f - s->fout_pad / (width * 2.f / 3.f) : 1.f - s->out_pad; @@ -3762,6 +3763,8 @@ static int barrelsplit_to_xyz(const V360Context *s, l_x = cos_theta * sin_phi; l_y = sin_theta; l_z = cos_theta * cos_phi; + + ret = 1; } else { const float scalew = s->fout_pad > 0 ? 1.f - s->fout_pad / (width / 3.f) : 1.f - s->out_pad; const float scaleh = s->fout_pad > 0 ? 1.f - s->fout_pad / (height / 4.f) : 1.f - s->out_pad; @@ -3787,13 +3790,14 @@ static int barrelsplit_to_xyz(const V360Context *s, l_x = (0.5f - uf) / scalew; l_y = 0.5f * dir_vert; l_z = (vf - 0.5f) * dir_vert / scaleh; + ret = (l_x * l_x * scalew * scalew + l_z * l_z * scaleh * scaleh) < 0.5f * 0.5f; } vec[0] = l_x; vec[1] = l_y; vec[2] = l_z; - return 1; + return ret; } /** |