[FFmpeg-cvslog] avfilter/vf_v360: simplify code which handles interpolation points
Paul B Mahol
git at videolan.org
Fri Feb 28 17:58:16 EET 2020
ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Fri Feb 28 16:53:19 2020 +0100| [31ecfa95fbb6597a7e3be7ece6137938b7a0f96b] | committer: Paul B Mahol
avfilter/vf_v360: simplify code which handles interpolation points
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=31ecfa95fbb6597a7e3be7ece6137938b7a0f96b
---
libavfilter/vf_v360.c | 148 +++++++++++++++++++++++++-------------------------
1 file changed, 74 insertions(+), 74 deletions(-)
diff --git a/libavfilter/vf_v360.c b/libavfilter/vf_v360.c
index eedf4fe8b2..068ba6dfce 100644
--- a/libavfilter/vf_v360.c
+++ b/libavfilter/vf_v360.c
@@ -1279,10 +1279,10 @@ static int xyz_to_cube3x2(const V360Context *s,
*du = uf - ui;
*dv = vf - vi;
- for (int i = -1; i < 3; i++) {
- for (int j = -1; j < 3; j++) {
- int new_ui = ui + j;
- int new_vi = vi + i;
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 4; j++) {
+ int new_ui = ui + j - 1;
+ int new_vi = vi + i - 1;
int u_shift, v_shift;
int new_ewi, new_ehi;
@@ -1316,8 +1316,8 @@ static int xyz_to_cube3x2(const V360Context *s,
new_vi = av_clip(lrintf(0.5f * new_ehi * (vf + 1.f)), 0, new_ehi - 1);
}
- us[i + 1][j + 1] = u_shift + new_ui;
- vs[i + 1][j + 1] = v_shift + new_vi;
+ us[i][j] = u_shift + new_ui;
+ vs[i][j] = v_shift + new_vi;
}
}
@@ -1432,10 +1432,10 @@ static int xyz_to_cube1x6(const V360Context *s,
*du = uf - ui;
*dv = vf - vi;
- for (int i = -1; i < 3; i++) {
- for (int j = -1; j < 3; j++) {
- int new_ui = ui + j;
- int new_vi = vi + i;
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 4; j++) {
+ int new_ui = ui + j - 1;
+ int new_vi = vi + i - 1;
int v_shift;
int new_ehi;
@@ -1462,8 +1462,8 @@ static int xyz_to_cube1x6(const V360Context *s,
new_vi = av_clip(lrintf(0.5f * new_ehi * (vf + 1.f)), 0, new_ehi - 1);
}
- us[i + 1][j + 1] = new_ui;
- vs[i + 1][j + 1] = v_shift + new_vi;
+ us[i][j] = new_ui;
+ vs[i][j] = v_shift + new_vi;
}
}
@@ -1512,10 +1512,10 @@ static int xyz_to_cube6x1(const V360Context *s,
*du = uf - ui;
*dv = vf - vi;
- for (int i = -1; i < 3; i++) {
- for (int j = -1; j < 3; j++) {
- int new_ui = ui + j;
- int new_vi = vi + i;
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 4; j++) {
+ int new_ui = ui + j - 1;
+ int new_vi = vi + i - 1;
int u_shift;
int new_ewi;
@@ -1542,8 +1542,8 @@ static int xyz_to_cube6x1(const V360Context *s,
new_vi = av_clip(lrintf(0.5f * ehi * (vf + 1.f)), 0, ehi - 1);
}
- us[i + 1][j + 1] = u_shift + new_ui;
- vs[i + 1][j + 1] = new_vi;
+ us[i][j] = u_shift + new_ui;
+ vs[i][j] = new_vi;
}
}
@@ -1671,10 +1671,10 @@ static int xyz_to_stereographic(const V360Context *s,
*du = visible ? uf - ui : 0.f;
*dv = visible ? vf - vi : 0.f;
- for (int i = -1; i < 3; i++) {
- for (int j = -1; j < 3; j++) {
- us[i + 1][j + 1] = visible ? av_clip(ui + j, 0, width - 1) : 0;
- vs[i + 1][j + 1] = visible ? av_clip(vi + i, 0, height - 1) : 0;
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 4; j++) {
+ us[i][j] = visible ? av_clip(ui + j - 1, 0, width - 1) : 0;
+ vs[i][j] = visible ? av_clip(vi + i - 1, 0, height - 1) : 0;
}
}
@@ -1710,10 +1710,10 @@ static int xyz_to_equirect(const V360Context *s,
*du = uf - ui;
*dv = vf - vi;
- for (int i = -1; i < 3; i++) {
- for (int j = -1; j < 3; j++) {
- us[i + 1][j + 1] = mod(ui + j, width);
- vs[i + 1][j + 1] = av_clip(vi + i, 0, height - 1);
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 4; j++) {
+ us[i][j] = mod(ui + j - 1, width);
+ vs[i][j] = av_clip(vi + i - 1, 0, height - 1);
}
}
@@ -1774,10 +1774,10 @@ static int xyz_to_flat(const V360Context *s,
*du = uf - ui;
*dv = vf - vi;
- for (int i = -1; i < 3; i++) {
- for (int j = -1; j < 3; j++) {
- us[i + 1][j + 1] = visible ? av_clip(ui + j, 0, width - 1) : 0;
- vs[i + 1][j + 1] = visible ? av_clip(vi + i, 0, height - 1) : 0;
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 4; j++) {
+ us[i][j] = visible ? av_clip(ui + j - 1, 0, width - 1) : 0;
+ vs[i][j] = visible ? av_clip(vi + i - 1, 0, height - 1) : 0;
}
}
@@ -1813,10 +1813,10 @@ static int xyz_to_mercator(const V360Context *s,
*du = uf - ui;
*dv = vf - vi;
- for (int i = -1; i < 3; i++) {
- for (int j = -1; j < 3; j++) {
- us[i + 1][j + 1] = av_clip(ui + j, 0, width - 1);
- vs[i + 1][j + 1] = av_clip(vi + i, 0, height - 1);
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 4; j++) {
+ us[i][j] = av_clip(ui + j - 1, 0, width - 1);
+ vs[i][j] = av_clip(vi + i - 1, 0, height - 1);
}
}
@@ -1883,10 +1883,10 @@ static int xyz_to_ball(const V360Context *s,
*du = uf - ui;
*dv = vf - vi;
- for (int i = -1; i < 3; i++) {
- for (int j = -1; j < 3; j++) {
- us[i + 1][j + 1] = av_clip(ui + j, 0, width - 1);
- vs[i + 1][j + 1] = av_clip(vi + i, 0, height - 1);
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 4; j++) {
+ us[i][j] = av_clip(ui + j - 1, 0, width - 1);
+ vs[i][j] = av_clip(vi + i - 1, 0, height - 1);
}
}
@@ -1998,10 +1998,10 @@ static int xyz_to_hammer(const V360Context *s,
*du = uf - ui;
*dv = vf - vi;
- for (int i = -1; i < 3; i++) {
- for (int j = -1; j < 3; j++) {
- us[i + 1][j + 1] = av_clip(ui + j, 0, width - 1);
- vs[i + 1][j + 1] = av_clip(vi + i, 0, height - 1);
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 4; j++) {
+ us[i][j] = av_clip(ui + j - 1, 0, width - 1);
+ vs[i][j] = av_clip(vi + i - 1, 0, height - 1);
}
}
@@ -2068,10 +2068,10 @@ static int xyz_to_sinusoidal(const V360Context *s,
*du = uf - ui;
*dv = vf - vi;
- for (int i = -1; i < 3; i++) {
- for (int j = -1; j < 3; j++) {
- us[i + 1][j + 1] = av_clip(ui + j, 0, width - 1);
- vs[i + 1][j + 1] = av_clip(vi + i, 0, height - 1);
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 4; j++) {
+ us[i][j] = av_clip(ui + j - 1, 0, width - 1);
+ vs[i][j] = av_clip(vi + i - 1, 0, height - 1);
}
}
@@ -2319,10 +2319,10 @@ static int xyz_to_eac(const V360Context *s,
*du = uf - ui;
*dv = vf - vi;
- for (int i = -1; i < 3; i++) {
- for (int j = -1; j < 3; j++) {
- us[i + 1][j + 1] = av_clip(ui + j, 0, width - 1);
- vs[i + 1][j + 1] = av_clip(vi + i, 0, height - 1);
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 4; j++) {
+ us[i][j] = av_clip(ui + j - 1, 0, width - 1);
+ vs[i][j] = av_clip(vi + i - 1, 0, height - 1);
}
}
@@ -2469,10 +2469,10 @@ static int xyz_to_fisheye(const V360Context *s,
*du = visible ? uf - ui : 0.f;
*dv = visible ? vf - vi : 0.f;
- for (int i = -1; i < 3; i++) {
- for (int j = -1; j < 3; j++) {
- us[i + 1][j + 1] = visible ? av_clip(ui + j, 0, width - 1) : 0;
- vs[i + 1][j + 1] = visible ? av_clip(vi + i, 0, height - 1) : 0;
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 4; j++) {
+ us[i][j] = visible ? av_clip(ui + j - 1, 0, width - 1) : 0;
+ vs[i][j] = visible ? av_clip(vi + i - 1, 0, height - 1) : 0;
}
}
@@ -2614,10 +2614,10 @@ static int xyz_to_cylindrical(const V360Context *s,
*du = uf - ui;
*dv = vf - vi;
- for (int i = -1; i < 3; i++) {
- for (int j = -1; j < 3; j++) {
- us[i + 1][j + 1] = visible ? av_clip(ui + j, 0, width - 1) : 0;
- vs[i + 1][j + 1] = visible ? av_clip(vi + i, 0, height - 1) : 0;
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 4; j++) {
+ us[i][j] = visible ? av_clip(ui + j - 1, 0, width - 1) : 0;
+ vs[i][j] = visible ? av_clip(vi + i - 1, 0, height - 1) : 0;
}
}
@@ -2747,10 +2747,10 @@ static int xyz_to_tetrahedron(const V360Context *s,
*du = uf - ui;
*dv = vf - vi;
- for (int i = -1; i < 3; i++) {
- for (int j = -1; j < 3; j++) {
- us[i + 1][j + 1] = mod(ui + j, width);
- vs[i + 1][j + 1] = av_clip(vi + i, 0, height - 1);
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 4; j++) {
+ us[i][j] = mod(ui + j - 1, width);
+ vs[i][j] = av_clip(vi + i - 1, 0, height - 1);
}
}
@@ -2842,10 +2842,10 @@ static int xyz_to_dfisheye(const V360Context *s,
*du = uf - ui;
*dv = vf - vi;
- for (int i = -1; i < 3; i++) {
- for (int j = -1; j < 3; j++) {
- us[i + 1][j + 1] = av_clip(u_shift + ui + j, 0, width - 1);
- vs[i + 1][j + 1] = av_clip( vi + i, 0, height - 1);
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 4; j++) {
+ us[i][j] = av_clip(u_shift + ui + j - 1, 0, width - 1);
+ vs[i][j] = av_clip( vi + i - 1, 0, height - 1);
}
}
@@ -2989,10 +2989,10 @@ static int xyz_to_barrel(const V360Context *s,
*du = uf - ui;
*dv = vf - vi;
- for (int i = -1; i < 3; i++) {
- for (int j = -1; j < 3; j++) {
- us[i + 1][j + 1] = u_shift + av_clip(ui + j, 0, ew - 1);
- vs[i + 1][j + 1] = v_shift + av_clip(vi + i, 0, eh - 1);
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 4; j++) {
+ us[i][j] = u_shift + av_clip(ui + j - 1, 0, ew - 1);
+ vs[i][j] = v_shift + av_clip(vi + i - 1, 0, eh - 1);
}
}
@@ -3088,10 +3088,10 @@ static int xyz_to_barrelsplit(const V360Context *s,
*du = uf - ui;
*dv = vf - vi;
- for (int i = -1; i < 3; i++) {
- for (int j = -1; j < 3; j++) {
- us[i + 1][j + 1] = u_shift + av_clip(ui + j, 0, ew - 1);
- vs[i + 1][j + 1] = v_shift + av_clip(vi + i, 0, eh - 1);
+ for (int i = 0; i < 4; i++) {
+ for (int j = 0; j < 4; j++) {
+ us[i][j] = u_shift + av_clip(ui + j - 1, 0, ew - 1);
+ vs[i][j] = v_shift + av_clip(vi + i - 1, 0, eh - 1);
}
}
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