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| author | Paul B Mahol <onemda@gmail.com> | 2017-09-03 14:15:33 +0200 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2017-09-03 14:15:33 +0200 |
| commit | e6e58de03d6048f8cb7233881465ec6288c7cf7f (patch) | |
| tree | 722ac0773571beeed747f4a0dc9694c1cca8c69a /libavfilter | |
| parent | 06ed3768c88cce44ba157ec81676acf96e50a61a (diff) | |
| download | ffmpeg-e6e58de03d6048f8cb7233881465ec6288c7cf7f.tar.gz | |
avfilter/vf_displace: add mirror edge mode
Signed-off-by: Paul B Mahol <onemda@gmail.com>
Diffstat (limited to 'libavfilter')
| -rw-r--r-- | libavfilter/vf_displace.c | 42 |
1 files changed, 39 insertions, 3 deletions
diff --git a/libavfilter/vf_displace.c b/libavfilter/vf_displace.c index a894021bff..9f16ad441f 100644 --- a/libavfilter/vf_displace.c +++ b/libavfilter/vf_displace.c @@ -31,6 +31,7 @@ enum EdgeMode { EDGE_BLANK, EDGE_SMEAR, EDGE_WRAP, + EDGE_MIRROR, EDGE_NB }; @@ -53,9 +54,10 @@ typedef struct DisplaceContext { static const AVOption displace_options[] = { { "edge", "set edge mode", OFFSET(edge), AV_OPT_TYPE_INT, {.i64=EDGE_SMEAR}, 0, EDGE_NB-1, FLAGS, "edge" }, - { "blank", "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_BLANK}, 0, 0, FLAGS, "edge" }, - { "smear", "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_SMEAR}, 0, 0, FLAGS, "edge" }, - { "wrap" , "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_WRAP}, 0, 0, FLAGS, "edge" }, + { "blank", "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_BLANK}, 0, 0, FLAGS, "edge" }, + { "smear", "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_SMEAR}, 0, 0, FLAGS, "edge" }, + { "wrap" , "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_WRAP}, 0, 0, FLAGS, "edge" }, + { "mirror" , "", 0, AV_OPT_TYPE_CONST, {.i64=EDGE_MIRROR}, 0, 0, FLAGS, "edge" }, { NULL } }; @@ -130,6 +132,22 @@ static void displace_planar(DisplaceContext *s, const AVFrame *in, dst[x] = src[Y * slinesize + X]; } break; + case EDGE_MIRROR: + for (x = 0; x < w; x++) { + int Y = y + ysrc[x] - 128; + int X = x + xsrc[x] - 128; + + if (Y < 0) + Y = (-Y) % h; + if (X < 0) + X = (-X) % w; + if (Y >= h) + Y = h - (Y % h) - 1; + if (X >= w) + X = w - (X % w) - 1; + dst[x] = src[Y * slinesize + X]; + } + break; } ysrc += ylinesize; @@ -196,6 +214,24 @@ static void displace_packed(DisplaceContext *s, const AVFrame *in, } } break; + case EDGE_MIRROR: + for (x = 0; x < w; x++) { + for (c = 0; c < s->nb_components; c++) { + int Y = y + ysrc[x * step + c] - 128; + int X = x + xsrc[x * step + c] - 128; + + if (Y < 0) + Y = (-Y) % h; + if (X < 0) + X = (-X) % w; + if (Y >= h) + Y = h - (Y % h) - 1; + if (X >= w) + X = w - (X % w) - 1; + dst[x * step + c] = src[Y * slinesize + X * step + c]; + } + } + break; } ysrc += ylinesize; |