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avfilter/vf_drawgraph: add rscroll slide mode

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2015-09-02 06:06:02 +00:00
parent 81f7a2579b
commit 8d2b4b8c82
2 changed files with 16 additions and 5 deletions
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3
doc/filters.texi
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@ -4496,6 +4496,9 @@ Replace old columns with new ones.
@item scroll
Scroll from right to left.
@item rscroll
Scroll from left to right.
@end table
Default is @code{frame}.

18
libavfilter/f_drawgraph.c
View File

@ -65,10 +65,11 @@ static const AVOption drawgraph_options[] = {
{"bar", "draw bars", OFFSET(mode), AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "mode"},
{"dot", "draw dots", OFFSET(mode), AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "mode"},
{"line", "draw lines", OFFSET(mode), AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "mode"},
{ "slide", "set slide mode", OFFSET(slide), AV_OPT_TYPE_INT, {.i64=0}, 0, 2, FLAGS, "slide" },
{ "slide", "set slide mode", OFFSET(slide), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS, "slide" },
{"frame", "draw new frames", OFFSET(slide), AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "slide"},
{"replace", "replace old columns with new", OFFSET(slide), AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "slide"},
{"scroll", "scroll from right to left", OFFSET(slide), AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "slide"},
{"rscroll", "scroll from left to right", OFFSET(slide), AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, FLAGS, "slide"},
{ "size", "set graph size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="900x256"}, 0, 0, FLAGS },
{ "s", "set graph size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="900x256"}, 0, 0, FLAGS },
{ NULL }
@ -181,7 +182,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
fg = av_expr_eval(s->fg_expr[i], values, NULL);
bg = AV_RN32(s->bg);
if (i == 0 && s->x >= outlink->w) {
if (i == 0 && (s->x >= outlink->w || s->slide == 3)) {
if (s->slide == 0 || s->slide == 1)
s->x = 0;
@ -192,6 +193,13 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
out->data[0] + j * out->linesize[0] + 4,
(outlink->w - 1) * 4);
}
} else if (s->slide == 3) {
s->x = 0;
for (j = 0; j < outlink->h; j++) {
memmove(out->data[0] + j * out->linesize[0] + 4,
out->data[0] + j * out->linesize[0],
(outlink->w - 1) * 4);
}
} else if (s->slide == 0) {
clear_image(s, out, outlink);
}
@ -202,7 +210,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
switch (s->mode) {
case 0:
if (i == 0 && (s->slide == 1 || s->slide == 2))
if (i == 0 && (s->slide > 0))
for (j = 0; j < outlink->h; j++)
draw_dot(bg, x, j, out);
@ -218,7 +226,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
}
break;
case 1:
if (i == 0 && (s->slide == 1 || s->slide == 2))
if (i == 0 && (s->slide > 0))
for (j = 0; j < outlink->h; j++)
draw_dot(bg, x, j, out);
draw_dot(fg, x, y, out);
@ -229,7 +237,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
s->prev_y[i] = y;
}
if (i == 0 && (s->slide == 1 || s->slide == 2)) {
if (i == 0 && (s->slide > 0)) {
for (j = 0; j < y; j++)
draw_dot(bg, x, j, out);
for (j = outlink->h - 1; j > y; j--)