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avfilter/vf_datascope: add support for commands in oscilloscope

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pull/333/head
Paul B Mahol 5 years ago
parent c98d8b2bf5
commit 103effebc1
2 changed files with 61 additions and 28 deletions
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  1. 7
      doc/filters.texi
  2. 82
      libavfilter/vf_datascope.c

7
doc/filters.texi
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@ -13810,6 +13810,13 @@ Draw some statistics. By default is enabled.
Draw scope. By default is enabled.
@end table
@subsection Commands
This filter supports same @ref{commands} as options.
The command accepts the same syntax of the corresponding option.
If the specified expression is not valid, it is kept at its current
value.
@subsection Examples
@itemize

82
libavfilter/vf_datascope.c
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@ -54,6 +54,7 @@ typedef struct DatascopeContext {
#define OFFSET(x) offsetof(DatascopeContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define FLAGSR AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
static const AVOption datascope_options[] = {
{ "size", "set output size", OFFSET(ow), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, FLAGS },
@ -720,19 +721,19 @@ typedef struct OscilloscopeContext {
#define OOFFSET(x) offsetof(OscilloscopeContext, x)
static const AVOption oscilloscope_options[] = {
{ "x", "set scope x position", OOFFSET(xpos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGS },
{ "y", "set scope y position", OOFFSET(ypos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGS },
{ "s", "set scope size", OOFFSET(size), AV_OPT_TYPE_FLOAT, {.dbl=0.8}, 0, 1, FLAGS },
{ "t", "set scope tilt", OOFFSET(tilt), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGS },
{ "o", "set trace opacity", OOFFSET(o), AV_OPT_TYPE_FLOAT, {.dbl=0.8}, 0, 1, FLAGS },
{ "tx", "set trace x position", OOFFSET(tx), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGS },
{ "ty", "set trace y position", OOFFSET(ty), AV_OPT_TYPE_FLOAT, {.dbl=0.9}, 0, 1, FLAGS },
{ "tw", "set trace width", OOFFSET(twidth), AV_OPT_TYPE_FLOAT, {.dbl=0.8},.1, 1, FLAGS },
{ "th", "set trace height", OOFFSET(theight), AV_OPT_TYPE_FLOAT, {.dbl=0.3},.1, 1, FLAGS },
{ "c", "set components to trace", OOFFSET(components), AV_OPT_TYPE_INT, {.i64=7}, 0, 15, FLAGS },
{ "g", "draw trace grid", OOFFSET(grid), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
{ "st", "draw statistics", OOFFSET(statistics), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
{ "sc", "draw scope", OOFFSET(scope), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
{ "x", "set scope x position", OOFFSET(xpos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
{ "y", "set scope y position", OOFFSET(ypos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
{ "s", "set scope size", OOFFSET(size), AV_OPT_TYPE_FLOAT, {.dbl=0.8}, 0, 1, FLAGSR },
{ "t", "set scope tilt", OOFFSET(tilt), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
{ "o", "set trace opacity", OOFFSET(o), AV_OPT_TYPE_FLOAT, {.dbl=0.8}, 0, 1, FLAGSR },
{ "tx", "set trace x position", OOFFSET(tx), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGSR },
{ "ty", "set trace y position", OOFFSET(ty), AV_OPT_TYPE_FLOAT, {.dbl=0.9}, 0, 1, FLAGSR },
{ "tw", "set trace width", OOFFSET(twidth), AV_OPT_TYPE_FLOAT, {.dbl=0.8},.1, 1, FLAGSR },
{ "th", "set trace height", OOFFSET(theight), AV_OPT_TYPE_FLOAT, {.dbl=0.3},.1, 1, FLAGSR },
{ "c", "set components to trace", OOFFSET(components), AV_OPT_TYPE_INT, {.i64=7}, 0, 15, FLAGSR },
{ "g", "draw trace grid", OOFFSET(grid), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGSR },
{ "st", "draw statistics", OOFFSET(statistics), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGSR },
{ "sc", "draw scope", OOFFSET(scope), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGSR },
{ NULL }
};
@ -830,15 +831,36 @@ static void draw_trace16(OscilloscopeContext *s, AVFrame *frame)
}
}
static int oscilloscope_config_input(AVFilterLink *inlink)
static void update_oscilloscope(AVFilterContext *ctx)
{
OscilloscopeContext *s = inlink->dst->priv;
OscilloscopeContext *s = ctx->priv;
AVFilterLink *inlink = ctx->inputs[0];
int cx, cy, size;
double tilt;
ff_draw_color(&s->draw, &s->dark, (uint8_t[]){ 0, 0, 0, s->o * 255} );
s->height = s->theight * inlink->h;
s->width = s->twidth * inlink->w;
size = hypot(inlink->w, inlink->h);
size *= s->size;
tilt = (s->tilt - 0.5) * M_PI;
cx = s->xpos * (inlink->w - 1);
cy = s->ypos * (inlink->h - 1);
s->x1 = cx - size / 2.0 * cos(tilt);
s->x2 = cx + size / 2.0 * cos(tilt);
s->y1 = cy - size / 2.0 * sin(tilt);
s->y2 = cy + size / 2.0 * sin(tilt);
s->ox = (inlink->w - s->width) * s->tx;
s->oy = (inlink->h - s->height) * s->ty;
}
static int oscilloscope_config_input(AVFilterLink *inlink)
{
OscilloscopeContext *s = inlink->dst->priv;
int size;
s->nb_planes = av_pix_fmt_count_planes(inlink->format);
ff_draw_init(&s->draw, inlink->format, 0);
ff_draw_color(&s->draw, &s->dark, (uint8_t[]){ 0, 0, 0, s->o * 255} );
ff_draw_color(&s->draw, &s->black, (uint8_t[]){ 0, 0, 0, 255} );
ff_draw_color(&s->draw, &s->white, (uint8_t[]){ 255, 255, 255, 255} );
ff_draw_color(&s->draw, &s->green, (uint8_t[]){ 0, 255, 0, 255} );
@ -876,24 +898,13 @@ static int oscilloscope_config_input(AVFilterLink *inlink)
}
s->max = (1 << s->draw.desc->comp[0].depth);
cx = s->xpos * (inlink->w - 1);
cy = s->ypos * (inlink->h - 1);
s->height = s->theight * inlink->h;
s->width = s->twidth * inlink->w;
size = hypot(inlink->w, inlink->h);
s->values = av_calloc(size, sizeof(*s->values));
if (!s->values)
return AVERROR(ENOMEM);
size *= s->size;
tilt = (s->tilt - 0.5) * M_PI;
s->x1 = cx - size / 2.0 * cos(tilt);
s->x2 = cx + size / 2.0 * cos(tilt);
s->y1 = cy - size / 2.0 * sin(tilt);
s->y2 = cy + size / 2.0 * sin(tilt);
s->ox = (inlink->w - s->width) * s->tx;
s->oy = (inlink->h - s->height) * s->ty;
update_oscilloscope(inlink->dst);
return 0;
}
@ -1022,6 +1033,20 @@ static int oscilloscope_filter_frame(AVFilterLink *inlink, AVFrame *frame)
return ff_filter_frame(outlink, frame);
}
static int oscilloscope_process_command(AVFilterContext *ctx, const char *cmd, const char *args,
char *res, int res_len, int flags)
{
int ret;
ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
if (ret < 0)
return ret;
update_oscilloscope(ctx);
return 0;
}
static const AVFilterPad oscilloscope_inputs[] = {
{
.name = "default",
@ -1051,4 +1076,5 @@ AVFilter ff_vf_oscilloscope = {
.inputs = oscilloscope_inputs,
.outputs = oscilloscope_outputs,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
.process_command = oscilloscope_process_command,
};

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