mirror of
https://github.com/nyanmisaka/ffmpeg-rockchip.git
synced 2025-10-21 07:59:43 +08:00
avfilter: add video oscilloscope filter
Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol
@@ -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);
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}
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for (i = 0; i < 10; i++) {
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ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
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s->ox + i * (s->width - 1) / 10, s->oy, 1, s->height);
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}
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ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
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s->ox + s->width - 1, s->oy, 1, s->height);
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}
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s->draw_trace(s, frame);
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for (i = 0; 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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max[c] = FFMAX(max[c], s->values[i].p[c]);
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min[c] = FFMIN(min[c], s->values[i].p[c]);
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average[c] += s->values[i].p[c];
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}
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}
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}
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for (c = 0; c < s->nb_comps; c++) {
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average[c] /= s->nb_values;
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}
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if (s->statistics && s->height > 10 && s->width > 280 * av_popcount(s->components)) {
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for (c = 0, i = 0; c < s->nb_comps; c++) {
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if ((1 << c) & s->components) {
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const char rgba[4] = { 'R', 'G', 'B', 'A' };
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const char yuva[4] = { 'Y', 'U', 'V', 'A' };
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char text[128];
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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]]);
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draw_text(&s->draw, frame, &s->white, s->ox + 2 + 280 * i++, s->oy + s->height + 4, text, 0);
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}
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}
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}
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return ff_filter_frame(outlink, frame);
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}
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static const AVFilterPad oscilloscope_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = oscilloscope_filter_frame,
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.config_props = oscilloscope_config_input,
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.needs_writable = 1,
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},
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{ NULL }
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};
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static const AVFilterPad oscilloscope_outputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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},
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{ NULL }
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};
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AVFilter ff_vf_oscilloscope = {
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.name = "oscilloscope",
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.description = NULL_IF_CONFIG_SMALL("2D Video Oscilloscope."),
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.priv_size = sizeof(OscilloscopeContext),
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.priv_class = &oscilloscope_class,
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.query_formats = query_formats,
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.uninit = oscilloscope_uninit,
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.inputs = oscilloscope_inputs,
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.outputs = oscilloscope_outputs,
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};
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