From: Limin Wang <lance.lmw...@gmail.com>
Signed-off-by: Limin Wang <lance.lmw...@gmail.com>
---
libavfilter/vf_lut3d.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/libavfilter/vf_lut3d.c b/libavfilter/vf_lut3d.c
index 9e820a17c9..9ba86f7238 100644
--- a/libavfilter/vf_lut3d.c
+++ b/libavfilter/vf_lut3d.c
@@ -243,9 +243,9 @@ static int
interp_##nbits##_##name##_p##depth(AVFilterContext *ctx, void *arg, i
srcg[x] * scale_g,
\
srcb[x] * scale_b};
\
struct rgbvec vec = interp_##name(lut3d, &scaled_rgb);
\
- dstr[x] = av_clip_uintp2(vec.r * (float)((1<<depth) - 1), depth);
\
- dstg[x] = av_clip_uintp2(vec.g * (float)((1<<depth) - 1), depth);
\
- dstb[x] = av_clip_uintp2(vec.b * (float)((1<<depth) - 1), depth);
\
+ dstr[x] = av_clip_uintp2(vec.r * (float)((1<<depth) - 1) + 0.5f,
depth); \
+ dstg[x] = av_clip_uintp2(vec.g * (float)((1<<depth) - 1) + 0.5f,
depth); \
+ dstb[x] = av_clip_uintp2(vec.b * (float)((1<<depth) - 1) + 0.5f,
depth); \
if (!direct && in->linesize[3])
\
dsta[x] = srca[x];
\
}
\
@@ -315,9 +315,9 @@ static int interp_##nbits##_##name(AVFilterContext *ctx,
void *arg, int jobnr, i
src[x + g] * scale_g,
\
src[x + b] * scale_b};
\
struct rgbvec vec = interp_##name(lut3d, &scaled_rgb);
\
- dst[x + r] = av_clip_uint##nbits(vec.r * (float)((1<<nbits) - 1));
\
- dst[x + g] = av_clip_uint##nbits(vec.g * (float)((1<<nbits) - 1));
\
- dst[x + b] = av_clip_uint##nbits(vec.b * (float)((1<<nbits) - 1));
\
+ dst[x + r] = av_clip_uint##nbits(vec.r * (float)((1<<nbits) - 1) +
0.5f); \
+ dst[x + g] = av_clip_uint##nbits(vec.g * (float)((1<<nbits) - 1) +
0.5f); \
+ dst[x + b] = av_clip_uint##nbits(vec.b * (float)((1<<nbits) - 1) +
0.5f); \
if (!direct && step == 4)
\
dst[x + a] = src[x + a];
\
}
\
@@ -1423,9 +1423,9 @@ static int
interp_1d_##nbits##_##name##_p##depth(AVFilterContext *ctx, \
r = interp_1d_##name(lut1d, 0, r); \
g = interp_1d_##name(lut1d, 1, g); \
b = interp_1d_##name(lut1d, 2, b); \
- dstr[x] = av_clip_uintp2(r * factor, depth); \
- dstg[x] = av_clip_uintp2(g * factor, depth); \
- dstb[x] = av_clip_uintp2(b * factor, depth); \
+ dstr[x] = av_clip_uintp2(r * factor + 0.5f, depth); \
+ dstg[x] = av_clip_uintp2(g * factor + 0.5f, depth); \
+ dstb[x] = av_clip_uintp2(b * factor + 0.5f, depth); \
if (!direct && in->linesize[3]) \
dsta[x] = srca[x]; \
} \
@@ -1511,9 +1511,9 @@ static int interp_1d_##nbits##_##name(AVFilterContext
*ctx, void *arg, \
rr = interp_1d_##name(lut1d, 0, rr); \
gg = interp_1d_##name(lut1d, 1, gg); \
bb = interp_1d_##name(lut1d, 2, bb); \
- dst[x + r] = av_clip_uint##nbits(rr * factor); \
- dst[x + g] = av_clip_uint##nbits(gg * factor); \
- dst[x + b] = av_clip_uint##nbits(bb * factor); \
+ dst[x + r] = av_clip_uint##nbits(rr * factor + 0.5f); \
+ dst[x + g] = av_clip_uint##nbits(gg * factor + 0.5f); \
+ dst[x + b] = av_clip_uint##nbits(bb * factor + 0.5f); \
if (!direct && step == 4) \
dst[x + a] = src[x + a]; \
} \
--
2.21.0
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