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avfilter/vf_convolution: unbreak roberts filter

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
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Paul B Mahol
2018-05-03 11:26:40 +02:00
parent 3a96534ed9
commit c8c2fb0977
1 changed files with 4 additions and 4 deletions
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8
libavfilter/vf_convolution.c
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@@ -165,8 +165,8 @@ static void filter16_roberts(uint8_t *dstp, const uint8_t *src, int width,
int x; int x;
for (x = 0; x < width; x++) { for (x = 0; x < width; x++) {
int suma = AV_RN16A(&c[0][2 * x]) * 1 + AV_RN16A(&c[4][2 * x]) * -1; int suma = AV_RN16A(&c[0][2 * x]) * 1 + AV_RN16A(&c[1][2 * x]) * -1;
int sumb = AV_RN16A(&c[1][2 * x]) * 1 + AV_RN16A(&c[3][2 * x]) * -1; int sumb = AV_RN16A(&c[4][2 * x]) * 1 + AV_RN16A(&c[3][2 * x]) * -1;
dst[x] = av_clip(sqrt(suma*suma + sumb*sumb) * scale + delta, 0, peak); dst[x] = av_clip(sqrt(suma*suma + sumb*sumb) * scale + delta, 0, peak);
} }
@@ -215,8 +215,8 @@ static void filter_roberts(uint8_t *dst, const uint8_t *src, int width,
int x; int x;
for (x = 0; x < width; x++) { for (x = 0; x < width; x++) {
int suma = c[0][x - 1] * 1 + c[4][x ] * -1; int suma = c[0][x] * 1 + c[1][x] * -1;
int sumb = c[1][x ] * 1 + c[3][x - 1] * -1; int sumb = c[4][x] * 1 + c[3][x] * -1;
dst[x] = av_clip_uint8(sqrt(suma*suma + sumb*sumb) * scale + delta); dst[x] = av_clip_uint8(sqrt(suma*suma + sumb*sumb) * scale + delta);
} }