ffmpeg | branch: master | Paul B Mahol <one...@gmail.com> | Tue Apr 5 17:34:33 2022 +0200| [21ca2210684b424ec34ae6a13ceec0e367654528] | committer: Paul B Mahol
avfilter/vsrc_gradients: add spiral type > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=21ca2210684b424ec34ae6a13ceec0e367654528 --- doc/filters.texi | 2 +- libavfilter/vsrc_gradients.c | 15 ++++++++++----- 2 files changed, 11 insertions(+), 6 deletions(-) diff --git a/doc/filters.texi b/doc/filters.texi index 7cf2ae8b0f..3fbaebb09c 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -25874,7 +25874,7 @@ supposed to be generated forever. Set speed of gradients rotation. @item type, t -Set type of gradients, can be @code{linear} or @code{radial} or @code{circular}. +Set type of gradients, can be @code{linear} or @code{radial} or @code{circular} or @code{spiral}. @end table diff --git a/libavfilter/vsrc_gradients.c b/libavfilter/vsrc_gradients.c index 61206bb2b3..c005613d42 100644 --- a/libavfilter/vsrc_gradients.c +++ b/libavfilter/vsrc_gradients.c @@ -79,11 +79,12 @@ static const AVOption gradients_options[] = { {"duration", "set video duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=-1}, -1, INT64_MAX, FLAGS }, {"d", "set video duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=-1}, -1, INT64_MAX, FLAGS }, {"speed", "set gradients rotation speed", OFFSET(speed), AV_OPT_TYPE_FLOAT,{.dbl=0.01}, 0.00001, 1, FLAGS }, - {"type", "set gradient type", OFFSET(type), AV_OPT_TYPE_INT, {.i64=0}, 0, 2, FLAGS, "type" }, - {"t", "set gradient type", OFFSET(type), AV_OPT_TYPE_INT, {.i64=0}, 0, 2, FLAGS, "type" }, + {"type", "set gradient type", OFFSET(type), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS, "type" }, + {"t", "set gradient type", OFFSET(type), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS, "type" }, {"linear", "set gradient type", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "type" }, {"radial", "set gradient type", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "type" }, {"circular", "set gradient type", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "type" }, + {"spiral", "set gradient type", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, FLAGS, "type" }, {NULL}, }; @@ -218,6 +219,7 @@ static float project(float origin_x, float origin_y, od_s_q = sqrtf(od_x * od_x + od_y * od_y); break; case 2: + case 3: od_s_q = M_PI * 2.f; break; } @@ -232,6 +234,9 @@ static float project(float origin_x, float origin_y, case 2: op_x_od = atan2f(op_x, op_y) + M_PI; break; + case 3: + op_x_od = fmodf(atan2f(op_x, op_y) + M_PI + point_x / fmaxf(origin_x, dest_x), 2.f * M_PI); + break; } // Normalize and clamp range. @@ -252,7 +257,7 @@ static int draw_gradients_slice(AVFilterContext *ctx, void *arg, int job, int nb for (int y = start; y < end; y++) { for (int x = 0; x < width; x++) { float factor = project(s->fx0, s->fy0, s->fx1, s->fy1, x, y, s->type); - dst[x] = lerp_colors(s->color_rgba, s->nb_colors, s->nb_colors + (s->type == 2), factor); + dst[x] = lerp_colors(s->color_rgba, s->nb_colors, s->nb_colors + (s->type >= 2), factor); } dst += linesize; @@ -275,7 +280,7 @@ static int draw_gradients_slice16(AVFilterContext *ctx, void *arg, int job, int for (int y = start; y < end; y++) { for (int x = 0; x < width; x++) { float factor = project(s->fx0, s->fy0, s->fx1, s->fy1, x, y, s->type); - dst[x] = lerp_colors16(s->color_rgba, s->nb_colors, s->nb_colors + s->type == 2, factor); + dst[x] = lerp_colors16(s->color_rgba, s->nb_colors, s->nb_colors + s->type >= 2, factor); } dst += linesize; @@ -304,7 +309,7 @@ static int draw_gradients_slice32_planar(AVFilterContext *ctx, void *arg, int jo for (int y = start; y < end; y++) { for (int x = 0; x < width; x++) { float factor = project(s->fx0, s->fy0, s->fx1, s->fy1, x, y, s->type); - lerp_colors32(s->color_rgbaf, s->nb_colors, s->nb_colors + s->type == 2 ,factor, + lerp_colors32(s->color_rgbaf, s->nb_colors, s->nb_colors + s->type >= 2 ,factor, &dst_r[x], &dst_g[x], &dst_b[x], &dst_a[x]); } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
