avfilter: add video oscilloscope filter
Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol
parent
8341d0dd0e
commit
399c7ab9c6
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@ -5,6 +5,8 @@ version <next>:
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- deflicker video filter
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- doubleweave video filter
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- lumakey video filter
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- pixscope video filter
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- oscilloscope video filter
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version 3.3:
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- CrystalHD decoder moved to new decode API
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@ -10233,6 +10233,84 @@ other parameters is 0.
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These parameters correspond to the parameters assigned to the
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libopencv function @code{cvSmooth}.
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@section oscilloscope
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2D Video Oscilloscope.
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Useful to measure spatial impulse, step responses, chroma delays, etc.
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It accepts the following parameters:
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@table @option
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@item x
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Set scope center x position.
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@item y
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Set scope center y position.
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@item s
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Set scope size, relative to frame diagonal.
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@item t
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Set scope tilt/rotation.
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@item o
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Set trace opacity.
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@item tx
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Set trace center x position.
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@item ty
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Set trace center y position.
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@item tw
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Set trace width, relative to width of frame.
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@item th
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Set trace height, relative to height of frame.
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@item c
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Set which components to trace. By default it traces first three components.
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@item g
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Draw trace grid. By default is enabled.
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@item st
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Draw some statistics. By default is enabled.
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@item sc
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Draw scope. By default is enabled.
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@end table
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@subsection Examples
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@itemize
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@item
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Inspect full first row of video frame.
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@example
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oscilloscope=x=0.5:y=0:s=1
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@end example
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@item
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Inspect full last row of video frame.
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@example
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oscilloscope=x=0.5:y=1:s=1
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@end example
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@item
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Inspect full 5th line of video frame of height 1080.
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@example
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oscilloscope=x=0.5:y=5/1080:s=1
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@end example
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@item
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Inspect full last column of video frame.
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@example
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oscilloscope=x=1:y=0.5:s=1:t=1
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@end example
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@end itemize
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@anchor{overlay}
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@section overlay
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@ -236,6 +236,7 @@ OBJS-$(CONFIG_NULL_FILTER) += vf_null.o
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OBJS-$(CONFIG_OCR_FILTER) += vf_ocr.o
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OBJS-$(CONFIG_OCV_FILTER) += vf_libopencv.o
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OBJS-$(CONFIG_OPENCL) += deshake_opencl.o unsharp_opencl.o
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OBJS-$(CONFIG_OSCILLOSCOPE_FILTER) += vf_datascope.o
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OBJS-$(CONFIG_OVERLAY_FILTER) += vf_overlay.o dualinput.o framesync.o
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OBJS-$(CONFIG_OWDENOISE_FILTER) += vf_owdenoise.o
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OBJS-$(CONFIG_PAD_FILTER) += vf_pad.o
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@ -246,6 +246,7 @@ static void register_all(void)
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REGISTER_FILTER(NULL, null, vf);
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REGISTER_FILTER(OCR, ocr, vf);
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REGISTER_FILTER(OCV, ocv, vf);
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REGISTER_FILTER(OSCILLOSCOPE, oscilloscope, vf);
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REGISTER_FILTER(OVERLAY, overlay, vf);
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REGISTER_FILTER(OWDENOISE, owdenoise, vf);
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REGISTER_FILTER(PAD, pad, vf);
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@ -641,3 +641,384 @@ AVFilter ff_vf_pixscope = {
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.inputs = pixscope_inputs,
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.outputs = pixscope_outputs,
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};
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typedef struct PixelValues {
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uint16_t p[4];
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} PixelValues;
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typedef struct OscilloscopeContext {
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const AVClass *class;
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float xpos, ypos;
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float tx, ty;
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float size;
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float tilt;
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float theight, twidth;
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float o;
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int components;
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int grid;
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int statistics;
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int scope;
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int x1, y1, x2, y2;
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int ox, oy;
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int height, width;
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int max;
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int nb_planes;
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int nb_comps;
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int is_rgb;
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uint8_t rgba_map[4];
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FFDrawContext draw;
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FFDrawColor dark;
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FFDrawColor black;
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FFDrawColor white;
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FFDrawColor green;
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FFDrawColor blue;
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FFDrawColor red;
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FFDrawColor cyan;
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FFDrawColor magenta;
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FFDrawColor gray;
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FFDrawColor *colors[4];
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int nb_values;
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PixelValues *values;
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void (*pick_color)(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value);
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void (*draw_trace)(struct OscilloscopeContext *s, AVFrame *frame);
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} OscilloscopeContext;
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#define OOFFSET(x) offsetof(OscilloscopeContext, x)
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static const AVOption oscilloscope_options[] = {
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{ "x", "set scope x position", OOFFSET(xpos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGS },
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{ "y", "set scope y position", OOFFSET(ypos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGS },
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{ "s", "set scope size", OOFFSET(size), AV_OPT_TYPE_FLOAT, {.dbl=0.8}, 0, 1, FLAGS },
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{ "t", "set scope tilt", OOFFSET(tilt), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGS },
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{ "o", "set trace opacity", OOFFSET(o), AV_OPT_TYPE_FLOAT, {.dbl=0.8}, 0, 1, FLAGS },
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{ "tx", "set trace x position", OOFFSET(tx), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1, FLAGS },
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{ "ty", "set trace y position", OOFFSET(ty), AV_OPT_TYPE_FLOAT, {.dbl=0.9}, 0, 1, FLAGS },
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{ "tw", "set trace width", OOFFSET(twidth), AV_OPT_TYPE_FLOAT, {.dbl=0.8},.1, 1, FLAGS },
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{ "th", "set trace height", OOFFSET(theight), AV_OPT_TYPE_FLOAT, {.dbl=0.3},.1, 1, FLAGS },
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{ "c", "set components to trace", OOFFSET(components), AV_OPT_TYPE_INT, {.i64=7}, 0, 15, FLAGS },
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{ "g", "draw trace grid", OOFFSET(grid), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
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{ "st", "draw statistics", OOFFSET(statistics), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
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{ "sc", "draw scope", OOFFSET(scope), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(oscilloscope);
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static void oscilloscope_uninit(AVFilterContext *ctx)
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{
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OscilloscopeContext *s = ctx->priv;
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av_freep(&s->values);
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}
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static void draw_line(FFDrawContext *draw, int x0, int y0, int x1, int y1,
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AVFrame *out, FFDrawColor *color)
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{
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int dx = FFABS(x1 - x0), sx = x0 < x1 ? 1 : -1;
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int dy = FFABS(y1 - y0), sy = y0 < y1 ? 1 : -1;
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int err = (dx > dy ? dx : -dy) / 2, e2;
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int p, i;
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for (;;) {
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if (x0 >= 0 && y0 >= 0 && x0 < out->width && y0 < out->height) {
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for (p = 0; p < draw->nb_planes; p++) {
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if (draw->desc->comp[p].depth == 8) {
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if (draw->nb_planes == 1) {
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for (i = 0; i < 4; i++) {
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out->data[0][y0 * out->linesize[0] + x0 * draw->pixelstep[0] + i] = color->comp[0].u8[i];
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}
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} else {
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out->data[p][out->linesize[p] * (y0 >> draw->vsub[p]) + (x0 >> draw->hsub[p])] = color->comp[p].u8[0];
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}
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} else {
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if (draw->nb_planes == 1) {
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for (i = 0; i < 4; i++) {
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AV_WN16(out->data[0] + y0 * out->linesize[0] + 2 * (x0 * draw->pixelstep[0] + i), color->comp[0].u16[i]);
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}
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} else {
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AV_WN16(out->data[p] + out->linesize[p] * (y0 >> draw->vsub[p]) + (x0 >> draw->hsub[p]) * 2, color->comp[p].u16[0]);
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}
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}
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}
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}
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if (x0 == x1 && y0 == y1)
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break;
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e2 = err;
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if (e2 >-dx) {
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err -= dy;
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x0 += sx;
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}
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if (e2 < dy) {
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err += dx;
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y0 += sy;
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}
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}
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}
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static void draw_trace8(OscilloscopeContext *s, AVFrame *frame)
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{
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int i, c;
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for (i = 1; i < s->nb_values; i++) {
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for (c = 0; c < s->nb_comps; c++) {
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if ((1 << c) & s->components) {
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int x = i * s->width / s->nb_values;
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int px = (i - 1) * s->width / s->nb_values;
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int py = s->height - s->values[i-1].p[c] * s->height / 256;
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int y = s->height - s->values[i].p[c] * s->height / 256;
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draw_line(&s->draw, s->ox + x, s->oy + y, s->ox + px, s->oy + py, frame, s->colors[c]);
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}
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}
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}
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}
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static void draw_trace16(OscilloscopeContext *s, AVFrame *frame)
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{
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int i, c;
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for (i = 1; i < s->nb_values; i++) {
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for (c = 0; c < s->nb_comps; c++) {
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if ((1 << c) & s->components) {
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int x = i * s->width / s->nb_values;
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int px = (i - 1) * s->width / s->nb_values;
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int py = s->height - s->values[i-1].p[c] * s->height / s->max;
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int y = s->height - s->values[i].p[c] * s->height / s->max;
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draw_line(&s->draw, s->ox + x, s->oy + y, s->ox + px, s->oy + py, frame, s->colors[c]);
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}
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}
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}
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}
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static int oscilloscope_config_input(AVFilterLink *inlink)
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{
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OscilloscopeContext *s = inlink->dst->priv;
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int cx, cy, size;
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double tilt;
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s->nb_planes = av_pix_fmt_count_planes(inlink->format);
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ff_draw_init(&s->draw, inlink->format, 0);
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ff_draw_color(&s->draw, &s->dark, (uint8_t[]){ 0, 0, 0, s->o * 255} );
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ff_draw_color(&s->draw, &s->black, (uint8_t[]){ 0, 0, 0, 255} );
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ff_draw_color(&s->draw, &s->white, (uint8_t[]){ 255, 255, 255, 255} );
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ff_draw_color(&s->draw, &s->green, (uint8_t[]){ 0, 255, 0, 255} );
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ff_draw_color(&s->draw, &s->blue, (uint8_t[]){ 0, 0, 255, 255} );
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ff_draw_color(&s->draw, &s->red, (uint8_t[]){ 255, 0, 0, 255} );
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ff_draw_color(&s->draw, &s->cyan, (uint8_t[]){ 0, 255, 255, 255} );
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ff_draw_color(&s->draw, &s->magenta, (uint8_t[]){ 255, 0, 255, 255} );
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ff_draw_color(&s->draw, &s->gray, (uint8_t[]){ 128, 128, 128, 255} );
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s->nb_comps = s->draw.desc->nb_components;
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s->is_rgb = s->draw.desc->flags & AV_PIX_FMT_FLAG_RGB;
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if (s->is_rgb) {
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s->colors[0] = &s->red;
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s->colors[1] = &s->green;
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s->colors[2] = &s->blue;
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s->colors[3] = &s->white;
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ff_fill_rgba_map(s->rgba_map, inlink->format);
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} else {
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s->colors[0] = &s->white;
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s->colors[1] = &s->cyan;
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s->colors[2] = &s->magenta;
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s->colors[3] = &s->white;
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s->rgba_map[0] = 0;
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s->rgba_map[1] = 1;
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s->rgba_map[2] = 2;
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s->rgba_map[3] = 3;
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}
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if (s->draw.desc->comp[0].depth <= 8) {
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s->pick_color = pick_color8;
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s->draw_trace = draw_trace8;
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} else {
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s->pick_color = pick_color16;
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s->draw_trace = draw_trace16;
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}
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s->max = (1 << s->draw.desc->comp[0].depth);
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cx = s->xpos * (inlink->w - 1);
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cy = s->ypos * (inlink->h - 1);
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s->height = s->theight * inlink->h;
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s->width = s->twidth * inlink->w;
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size = hypot(inlink->w, inlink->h);
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s->values = av_calloc(size, sizeof(*s->values));
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if (!s->values)
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return AVERROR(ENOMEM);
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size *= s->size;
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tilt = (s->tilt - 0.5) * M_PI;
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s->x1 = cx - size / 2.0 * cos(tilt);
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s->x2 = cx + size / 2.0 * cos(tilt);
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s->y1 = cy - size / 2.0 * sin(tilt);
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s->y2 = cy + size / 2.0 * sin(tilt);
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s->ox = (inlink->w - s->width) * s->tx;
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s->oy = (inlink->h - s->height) * s->ty;
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return 0;
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}
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static void draw_scope(OscilloscopeContext *s, int x0, int y0, int x1, int y1,
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AVFrame *out, PixelValues *p, int state)
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{
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int dx = FFABS(x1 - x0), sx = x0 < x1 ? 1 : -1;
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int dy = FFABS(y1 - y0), sy = y0 < y1 ? 1 : -1;
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int err = (dx > dy ? dx : -dy) / 2, e2;
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for (;;) {
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if (x0 >= 0 && y0 >= 0 && x0 < out->width && y0 < out->height) {
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FFDrawColor color = { { 0 } };
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int value[4] = { 0 };
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s->pick_color(&s->draw, &color, out, x0, y0, value);
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s->values[s->nb_values].p[0] = value[0];
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s->values[s->nb_values].p[1] = value[1];
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s->values[s->nb_values].p[2] = value[2];
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s->values[s->nb_values].p[3] = value[3];
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s->nb_values++;
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if (s->scope) {
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if (s->draw.desc->comp[0].depth == 8) {
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if (s->draw.nb_planes == 1) {
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int i;
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for (i = 0; i < s->draw.pixelstep[0]; i++)
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out->data[0][out->linesize[0] * y0 + x0 * s->draw.pixelstep[0] + i] = 255 * ((s->nb_values + state) & 1);
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} else {
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out->data[0][out->linesize[0] * y0 + x0] = 255 * ((s->nb_values + state) & 1);
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}
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} else {
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if (s->draw.nb_planes == 1) {
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int i;
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for (i = 0; i < s->draw.pixelstep[0]; i++)
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AV_WN16(out->data[0] + out->linesize[0] * y0 + 2 * x0 * (s->draw.pixelstep[0] + i), (s->max - 1) * ((s->nb_values + state) & 1));
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} else {
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AV_WN16(out->data[0] + out->linesize[0] * y0 + 2 * x0, (s->max - 1) * ((s->nb_values + state) & 1));
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}
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}
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}
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}
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if (x0 == x1 && y0 == y1)
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break;
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e2 = err;
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if (e2 >-dx) {
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err -= dy;
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x0 += sx;
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}
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if (e2 < dy) {
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err += dx;
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y0 += sy;
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}
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}
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}
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static int oscilloscope_filter_frame(AVFilterLink *inlink, AVFrame *frame)
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{
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AVFilterContext *ctx = inlink->dst;
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OscilloscopeContext *s = ctx->priv;
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AVFilterLink *outlink = ctx->outputs[0];
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float average[4] = { 0 };
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int max[4] = { 0 };
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int min[4] = { INT_MAX, INT_MAX, INT_MAX, INT_MAX };
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int i, c;
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s->nb_values = 0;
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draw_scope(s, s->x1, s->y1, s->x2, s->y2, frame, s->values, inlink->frame_count_in & 1);
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ff_blend_rectangle(&s->draw, &s->dark, frame->data, frame->linesize,
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frame->width, frame->height,
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s->ox, s->oy, s->width, s->height + 20 * s->statistics);
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if (s->grid) {
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ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
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s->ox, s->oy, s->width - 1, 1);
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for (i = 1; i < 5; i++) {
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ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
|
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s->ox, s->oy + i * (s->height - 1) / 4, s->width, 1);
|
||||
}
|
||||
|
||||
for (i = 0; i < 10; i++) {
|
||||
ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
|
||||
s->ox + i * (s->width - 1) / 10, s->oy, 1, s->height);
|
||||
}
|
||||
|
||||
ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
|
||||
s->ox + s->width - 1, s->oy, 1, s->height);
|
||||
}
|
||||
|
||||
s->draw_trace(s, frame);
|
||||
|
||||
for (i = 0; i < s->nb_values; i++) {
|
||||
for (c = 0; c < s->nb_comps; c++) {
|
||||
if ((1 << c) & s->components) {
|
||||
max[c] = FFMAX(max[c], s->values[i].p[c]);
|
||||
min[c] = FFMIN(min[c], s->values[i].p[c]);
|
||||
average[c] += s->values[i].p[c];
|
||||
}
|
||||
}
|
||||
}
|
||||
for (c = 0; c < s->nb_comps; c++) {
|
||||
average[c] /= s->nb_values;
|
||||
}
|
||||
|
||||
if (s->statistics && s->height > 10 && s->width > 280 * av_popcount(s->components)) {
|
||||
for (c = 0, i = 0; c < s->nb_comps; c++) {
|
||||
if ((1 << c) & s->components) {
|
||||
const char rgba[4] = { 'R', 'G', 'B', 'A' };
|
||||
const char yuva[4] = { 'Y', 'U', 'V', 'A' };
|
||||
char text[128];
|
||||
|
||||
snprintf(text, sizeof(text), "%c avg:%.1f min:%d max:%d\n", s->is_rgb ? rgba[c] : yuva[c], average[s->rgba_map[c]], min[s->rgba_map[c]], max[s->rgba_map[c]]);
|
||||
draw_text(&s->draw, frame, &s->white, s->ox + 2 + 280 * i++, s->oy + s->height + 4, text, 0);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return ff_filter_frame(outlink, frame);
|
||||
}
|
||||
|
||||
static const AVFilterPad oscilloscope_inputs[] = {
|
||||
{
|
||||
.name = "default",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.filter_frame = oscilloscope_filter_frame,
|
||||
.config_props = oscilloscope_config_input,
|
||||
.needs_writable = 1,
|
||||
},
|
||||
{ NULL }
|
||||
};
|
||||
|
||||
static const AVFilterPad oscilloscope_outputs[] = {
|
||||
{
|
||||
.name = "default",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
},
|
||||
{ NULL }
|
||||
};
|
||||
|
||||
AVFilter ff_vf_oscilloscope = {
|
||||
.name = "oscilloscope",
|
||||
.description = NULL_IF_CONFIG_SMALL("2D Video Oscilloscope."),
|
||||
.priv_size = sizeof(OscilloscopeContext),
|
||||
.priv_class = &oscilloscope_class,
|
||||
.query_formats = query_formats,
|
||||
.uninit = oscilloscope_uninit,
|
||||
.inputs = oscilloscope_inputs,
|
||||
.outputs = oscilloscope_outputs,
|
||||
};
|
||||
|
|
|
|||
Loading…
Reference in New Issue