GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavfilter/vf_datascope.c Lines: 0 503 0.0 %
Date: 2020-09-25 14:59:26 Branches: 0 262 0.0 %

Line Branch Exec Source
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/*
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 * Copyright (c) 2016 Paul B Mahol
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include "libavutil/avassert.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/opt.h"
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#include "libavutil/parseutils.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/xga_font_data.h"
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#include "avfilter.h"
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#include "drawutils.h"
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#include "formats.h"
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#include "internal.h"
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#include "video.h"
32
33
typedef struct DatascopeContext {
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    const AVClass *class;
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    int ow, oh;
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    int x, y;
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    int mode;
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    int dformat;
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    int axis;
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    float opacity;
41
42
    int nb_planes;
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    int nb_comps;
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    int chars;
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    FFDrawContext draw;
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    FFDrawColor yellow;
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    FFDrawColor white;
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    FFDrawColor black;
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    FFDrawColor gray;
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    void (*pick_color)(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value);
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    void (*reverse_color)(FFDrawContext *draw, FFDrawColor *color, FFDrawColor *reverse);
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    int (*filter)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
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} DatascopeContext;
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#define OFFSET(x) offsetof(DatascopeContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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#define FLAGSR AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
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static const AVOption datascope_options[] = {
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    { "size", "set output size", OFFSET(ow),   AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, FLAGS },
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    { "s",    "set output size", OFFSET(ow),   AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, FLAGS },
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    { "x",    "set x offset", OFFSET(x),    AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS },
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    { "y",    "set y offset", OFFSET(y),    AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS },
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    { "mode", "set scope mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 2, FLAGS, "mode" },
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    {   "mono",   NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "mode" },
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    {   "color",  NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "mode" },
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    {   "color2", NULL, 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, FLAGS, "mode" },
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    { "axis",    "draw column/row numbers", OFFSET(axis), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
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    { "opacity", "set background opacity", OFFSET(opacity), AV_OPT_TYPE_FLOAT, {.dbl=0.75}, 0, 1, FLAGS },
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    { "format", "set display number format", OFFSET(dformat), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "format" },
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    {   "hex",  NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "format" },
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    {   "dec",  NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "format" },
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    { NULL }
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};
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AVFILTER_DEFINE_CLASS(datascope);
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static int query_formats(AVFilterContext *ctx)
80
{
81
    return ff_set_common_formats(ctx, ff_draw_supported_pixel_formats(0));
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}
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static void draw_text(FFDrawContext *draw, AVFrame *frame, FFDrawColor *color,
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                      int x0, int y0, const uint8_t *text, int vertical)
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{
87
    int x = x0;
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89
    for (; *text; text++) {
90
        if (*text == '\n') {
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            x = x0;
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            y0 += 8;
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            continue;
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        }
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        ff_blend_mask(draw, color, frame->data, frame->linesize,
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                      frame->width, frame->height,
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                      avpriv_cga_font + *text * 8, 1, 8, 8, 0, 0, x, y0);
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        if (vertical) {
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            x = x0;
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            y0 += 8;
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        } else {
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            x += 8;
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        }
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    }
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}
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static void pick_color8(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value)
108
{
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    int p, i;
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    color->rgba[3] = 255;
112
    for (p = 0; p < draw->nb_planes; p++) {
113
        if (draw->nb_planes == 1) {
114
            for (i = 0; i < 4; i++) {
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                value[i] = in->data[0][y * in->linesize[0] + x * draw->pixelstep[0] + i];
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                color->comp[0].u8[i] = value[i];
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            }
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        } else {
119
            value[p] = in->data[p][(y >> draw->vsub[p]) * in->linesize[p] + (x >> draw->hsub[p])];
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            color->comp[p].u8[0] = value[p];
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        }
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    }
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}
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static void pick_color16(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value)
126
{
127
    int p, i;
128
129
    color->rgba[3] = 255;
130
    for (p = 0; p < draw->nb_planes; p++) {
131
        if (draw->nb_planes == 1) {
132
            for (i = 0; i < 4; i++) {
133
                value[i] = AV_RL16(in->data[0] + y * in->linesize[0] + x * draw->pixelstep[0] + i * 2);
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                color->comp[0].u16[i] = value[i];
135
            }
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        } else {
137
            value[p] = AV_RL16(in->data[p] + (y >> draw->vsub[p]) * in->linesize[p] + (x >> draw->hsub[p]) * 2);
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            color->comp[p].u16[0] = value[p];
139
        }
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    }
141
}
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static void reverse_color8(FFDrawContext *draw, FFDrawColor *color, FFDrawColor *reverse)
144
{
145
    int p;
146
147
    reverse->rgba[3] = 255;
148
    for (p = 0; p < draw->nb_planes; p++) {
149
        reverse->comp[p].u8[0] = color->comp[p].u8[0] > 127 ? 0 : 255;
150
        reverse->comp[p].u8[1] = color->comp[p].u8[1] > 127 ? 0 : 255;
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        reverse->comp[p].u8[2] = color->comp[p].u8[2] > 127 ? 0 : 255;
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    }
153
}
154
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static void reverse_color16(FFDrawContext *draw, FFDrawColor *color, FFDrawColor *reverse)
156
{
157
    int p;
158
159
    reverse->rgba[3] = 255;
160
    for (p = 0; p < draw->nb_planes; p++) {
161
        const unsigned max = (1 << draw->desc->comp[p].depth) - 1;
162
        const unsigned mid = (max + 1) / 2;
163
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        reverse->comp[p].u16[0] = color->comp[p].u16[0] > mid ? 0 : max;
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        reverse->comp[p].u16[1] = color->comp[p].u16[1] > mid ? 0 : max;
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        reverse->comp[p].u16[2] = color->comp[p].u16[2] > mid ? 0 : max;
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    }
168
}
169
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typedef struct ThreadData {
171
    AVFrame *in, *out;
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    int xoff, yoff;
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} ThreadData;
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static int filter_color2(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
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{
177
    DatascopeContext *s = ctx->priv;
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    AVFilterLink *outlink = ctx->outputs[0];
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    AVFilterLink *inlink = ctx->inputs[0];
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    ThreadData *td = arg;
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    AVFrame *in = td->in;
182
    AVFrame *out = td->out;
183
    const int xoff = td->xoff;
184
    const int yoff = td->yoff;
185
    const int P = FFMAX(s->nb_planes, s->nb_comps);
186
    const int C = s->chars;
187
    const int D = ((s->chars - s->dformat) >> 2) + s->dformat * 2;
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    const int W = (outlink->w - xoff) / (C * 10);
189
    const int H = (outlink->h - yoff) / (P * 12);
190
    const char *format[4] = {"%02X\n", "%04X\n", "%03d\n", "%05d\n"};
191
    const int slice_start = (W * jobnr) / nb_jobs;
192
    const int slice_end = (W * (jobnr+1)) / nb_jobs;
193
    int x, y, p;
194
195
    for (y = 0; y < H && (y + s->y < inlink->h); y++) {
196
        for (x = slice_start; x < slice_end && (x + s->x < inlink->w); x++) {
197
            FFDrawColor color = { { 0 } };
198
            FFDrawColor reverse = { { 0 } };
199
            int value[4] = { 0 };
200
201
            s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
202
            s->reverse_color(&s->draw, &color, &reverse);
203
            ff_fill_rectangle(&s->draw, &color, out->data, out->linesize,
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                              xoff + x * C * 10, yoff + y * P * 12, C * 10, P * 12);
205
206
            for (p = 0; p < P; p++) {
207
                char text[256];
208
209
                snprintf(text, sizeof(text), format[D], value[p]);
210
                draw_text(&s->draw, out, &reverse, xoff + x * C * 10 + 2, yoff + y * P * 12 + p * 10 + 2, text, 0);
211
            }
212
        }
213
    }
214
215
    return 0;
216
}
217
218
static int filter_color(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
219
{
220
    DatascopeContext *s = ctx->priv;
221
    AVFilterLink *outlink = ctx->outputs[0];
222
    AVFilterLink *inlink = ctx->inputs[0];
223
    ThreadData *td = arg;
224
    AVFrame *in = td->in;
225
    AVFrame *out = td->out;
226
    const int xoff = td->xoff;
227
    const int yoff = td->yoff;
228
    const int P = FFMAX(s->nb_planes, s->nb_comps);
229
    const int C = s->chars;
230
    const int D = ((s->chars - s->dformat) >> 2) + s->dformat * 2;
231
    const int W = (outlink->w - xoff) / (C * 10);
232
    const int H = (outlink->h - yoff) / (P * 12);
233
    const char *format[4] = {"%02X\n", "%04X\n", "%03d\n", "%05d\n"};
234
    const int slice_start = (W * jobnr) / nb_jobs;
235
    const int slice_end = (W * (jobnr+1)) / nb_jobs;
236
    int x, y, p;
237
238
    for (y = 0; y < H && (y + s->y < inlink->h); y++) {
239
        for (x = slice_start; x < slice_end && (x + s->x < inlink->w); x++) {
240
            FFDrawColor color = { { 0 } };
241
            int value[4] = { 0 };
242
243
            s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
244
245
            for (p = 0; p < P; p++) {
246
                char text[256];
247
248
                snprintf(text, sizeof(text), format[D], value[p]);
249
                draw_text(&s->draw, out, &color, xoff + x * C * 10 + 2, yoff + y * P * 12 + p * 10 + 2, text, 0);
250
            }
251
        }
252
    }
253
254
    return 0;
255
}
256
257
static int filter_mono(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
258
{
259
    DatascopeContext *s = ctx->priv;
260
    AVFilterLink *outlink = ctx->outputs[0];
261
    AVFilterLink *inlink = ctx->inputs[0];
262
    ThreadData *td = arg;
263
    AVFrame *in = td->in;
264
    AVFrame *out = td->out;
265
    const int xoff = td->xoff;
266
    const int yoff = td->yoff;
267
    const int P = FFMAX(s->nb_planes, s->nb_comps);
268
    const int C = s->chars;
269
    const int D = ((s->chars - s->dformat) >> 2) + s->dformat * 2;
270
    const int W = (outlink->w - xoff) / (C * 10);
271
    const int H = (outlink->h - yoff) / (P * 12);
272
    const char *format[4] = {"%02X\n", "%04X\n", "%03d\n", "%05d\n"};
273
    const int slice_start = (W * jobnr) / nb_jobs;
274
    const int slice_end = (W * (jobnr+1)) / nb_jobs;
275
    int x, y, p;
276
277
    for (y = 0; y < H && (y + s->y < inlink->h); y++) {
278
        for (x = slice_start; x < slice_end && (x + s->x < inlink->w); x++) {
279
            FFDrawColor color = { { 0 } };
280
            int value[4] = { 0 };
281
282
            s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
283
            for (p = 0; p < P; p++) {
284
                char text[256];
285
286
                snprintf(text, sizeof(text), format[D], value[p]);
287
                draw_text(&s->draw, out, &s->white, xoff + x * C * 10 + 2, yoff + y * P * 12 + p * 10 + 2, text, 0);
288
            }
289
        }
290
    }
291
292
    return 0;
293
}
294
295
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
296
{
297
    AVFilterContext *ctx  = inlink->dst;
298
    DatascopeContext *s = ctx->priv;
299
    AVFilterLink *outlink = ctx->outputs[0];
300
    ThreadData td = { 0 };
301
    int ymaxlen = 0;
302
    int xmaxlen = 0;
303
    AVFrame *out;
304
305
    out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
306
    if (!out) {
307
        av_frame_free(&in);
308
        return AVERROR(ENOMEM);
309
    }
310
    out->pts = in->pts;
311
312
    ff_fill_rectangle(&s->draw, &s->black, out->data, out->linesize,
313
                      0, 0, outlink->w, outlink->h);
314
315
    if (s->axis) {
316
        const int P = FFMAX(s->nb_planes, s->nb_comps);
317
        const int C = s->chars;
318
        int Y = outlink->h / (P * 12);
319
        int X = outlink->w / (C * 10);
320
        char text[256] = { 0 };
321
        int x, y;
322
323
        snprintf(text, sizeof(text), "%d", s->y + Y);
324
        ymaxlen = strlen(text);
325
        ymaxlen *= 10;
326
        snprintf(text, sizeof(text), "%d", s->x + X);
327
        xmaxlen = strlen(text);
328
        xmaxlen *= 10;
329
330
        Y = (outlink->h - xmaxlen) / (P * 12);
331
        X = (outlink->w - ymaxlen) / (C * 10);
332
333
        for (y = 0; y < Y; y++) {
334
            snprintf(text, sizeof(text), "%d", s->y + y);
335
336
            ff_fill_rectangle(&s->draw, &s->gray, out->data, out->linesize,
337
                              0, xmaxlen + y * P * 12 + (P + 1) * P - 2, ymaxlen, 10);
338
339
            draw_text(&s->draw, out, &s->yellow, 2, xmaxlen + y * P * 12 + (P + 1) * P, text, 0);
340
        }
341
342
        for (x = 0; x < X; x++) {
343
            snprintf(text, sizeof(text), "%d", s->x + x);
344
345
            ff_fill_rectangle(&s->draw, &s->gray, out->data, out->linesize,
346
                              ymaxlen + x * C * 10 + 2 * C - 2, 0, 10, xmaxlen);
347
348
            draw_text(&s->draw, out, &s->yellow, ymaxlen + x * C * 10 + 2 * C, 2, text, 1);
349
        }
350
    }
351
352
    td.in = in; td.out = out, td.yoff = xmaxlen, td.xoff = ymaxlen;
353
    ctx->internal->execute(ctx, s->filter, &td, NULL, FFMIN(ff_filter_get_nb_threads(ctx), FFMAX(outlink->w / 20, 1)));
354
355
    av_frame_free(&in);
356
    return ff_filter_frame(outlink, out);
357
}
358
359
static int config_input(AVFilterLink *inlink)
360
{
361
    DatascopeContext *s = inlink->dst->priv;
362
    uint8_t alpha = s->opacity * 255;
363
364
    s->nb_planes = av_pix_fmt_count_planes(inlink->format);
365
    ff_draw_init(&s->draw, inlink->format, 0);
366
    ff_draw_color(&s->draw, &s->white,  (uint8_t[]){ 255, 255, 255, 255} );
367
    ff_draw_color(&s->draw, &s->black,  (uint8_t[]){ 0, 0, 0, alpha} );
368
    ff_draw_color(&s->draw, &s->yellow, (uint8_t[]){ 255, 255, 0, 255} );
369
    ff_draw_color(&s->draw, &s->gray,   (uint8_t[]){ 77, 77, 77, 255} );
370
    s->chars = (s->draw.desc->comp[0].depth + 7) / 8 * 2 + s->dformat;
371
    s->nb_comps = s->draw.desc->nb_components;
372
373
    switch (s->mode) {
374
    case 0: s->filter = filter_mono;   break;
375
    case 1: s->filter = filter_color;  break;
376
    case 2: s->filter = filter_color2; break;
377
    }
378
379
    if (s->draw.desc->comp[0].depth <= 8) {
380
        s->pick_color = pick_color8;
381
        s->reverse_color = reverse_color8;
382
    } else {
383
        s->pick_color = pick_color16;
384
        s->reverse_color = reverse_color16;
385
    }
386
387
    return 0;
388
}
389
390
static int config_output(AVFilterLink *outlink)
391
{
392
    DatascopeContext *s = outlink->src->priv;
393
394
    outlink->h = s->oh;
395
    outlink->w = s->ow;
396
    outlink->sample_aspect_ratio = (AVRational){1,1};
397
398
    return 0;
399
}
400
401
static const AVFilterPad inputs[] = {
402
    {
403
        .name         = "default",
404
        .type         = AVMEDIA_TYPE_VIDEO,
405
        .filter_frame = filter_frame,
406
        .config_props = config_input,
407
    },
408
    { NULL }
409
};
410
411
static const AVFilterPad outputs[] = {
412
    {
413
        .name         = "default",
414
        .type         = AVMEDIA_TYPE_VIDEO,
415
        .config_props = config_output,
416
    },
417
    { NULL }
418
};
419
420
AVFilter ff_vf_datascope = {
421
    .name          = "datascope",
422
    .description   = NULL_IF_CONFIG_SMALL("Video data analysis."),
423
    .priv_size     = sizeof(DatascopeContext),
424
    .priv_class    = &datascope_class,
425
    .query_formats = query_formats,
426
    .inputs        = inputs,
427
    .outputs       = outputs,
428
    .flags         = AVFILTER_FLAG_SLICE_THREADS,
429
};
430
431
typedef struct PixscopeContext {
432
    const AVClass *class;
433
434
    float xpos, ypos;
435
    float wx, wy;
436
    int w, h;
437
    float o;
438
439
    int x, y;
440
    int ww, wh;
441
442
    int nb_planes;
443
    int nb_comps;
444
    int is_rgb;
445
    uint8_t rgba_map[4];
446
    FFDrawContext draw;
447
    FFDrawColor   dark;
448
    FFDrawColor   black;
449
    FFDrawColor   white;
450
    FFDrawColor   green;
451
    FFDrawColor   blue;
452
    FFDrawColor   red;
453
    FFDrawColor  *colors[4];
454
455
    uint16_t values[4][80][80];
456
457
    void (*pick_color)(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value);
458
} PixscopeContext;
459
460
#define POFFSET(x) offsetof(PixscopeContext, x)
461
462
static const AVOption pixscope_options[] = {
463
    { "x",  "set scope x offset",  POFFSET(xpos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0,  1, FLAGS },
464
    { "y",  "set scope y offset",  POFFSET(ypos), AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0,  1, FLAGS },
465
    { "w",  "set scope width",     POFFSET(w),    AV_OPT_TYPE_INT,   {.i64=7},   1, 80, FLAGS },
466
    { "h",  "set scope height",    POFFSET(h),    AV_OPT_TYPE_INT,   {.i64=7},   1, 80, FLAGS },
467
    { "o",  "set window opacity",  POFFSET(o),    AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0,  1, FLAGS },
468
    { "wx", "set window x offset", POFFSET(wx),   AV_OPT_TYPE_FLOAT, {.dbl=-1}, -1,  1, FLAGS },
469
    { "wy", "set window y offset", POFFSET(wy),   AV_OPT_TYPE_FLOAT, {.dbl=-1}, -1,  1, FLAGS },
470
    { NULL }
471
};
472
473
AVFILTER_DEFINE_CLASS(pixscope);
474
475
static int pixscope_config_input(AVFilterLink *inlink)
476
{
477
    PixscopeContext *s = inlink->dst->priv;
478
479
    s->nb_planes = av_pix_fmt_count_planes(inlink->format);
480
    ff_draw_init(&s->draw, inlink->format, 0);
481
    ff_draw_color(&s->draw, &s->dark,  (uint8_t[]){ 0, 0, 0, s->o * 255} );
482
    ff_draw_color(&s->draw, &s->black, (uint8_t[]){ 0, 0, 0, 255} );
483
    ff_draw_color(&s->draw, &s->white, (uint8_t[]){ 255, 255, 255, 255} );
484
    ff_draw_color(&s->draw, &s->green, (uint8_t[]){   0, 255,   0, 255} );
485
    ff_draw_color(&s->draw, &s->blue,  (uint8_t[]){   0,   0, 255, 255} );
486
    ff_draw_color(&s->draw, &s->red,   (uint8_t[]){ 255,   0,   0, 255} );
487
    s->nb_comps = s->draw.desc->nb_components;
488
    s->is_rgb   = s->draw.desc->flags & AV_PIX_FMT_FLAG_RGB;
489
490
    if (s->is_rgb) {
491
        s->colors[0] = &s->red;
492
        s->colors[1] = &s->green;
493
        s->colors[2] = &s->blue;
494
        s->colors[3] = &s->white;
495
        ff_fill_rgba_map(s->rgba_map, inlink->format);
496
    } else {
497
        s->colors[0] = &s->white;
498
        s->colors[1] = &s->blue;
499
        s->colors[2] = &s->red;
500
        s->colors[3] = &s->white;
501
        s->rgba_map[0] = 0;
502
        s->rgba_map[1] = 1;
503
        s->rgba_map[2] = 2;
504
        s->rgba_map[3] = 3;
505
    }
506
507
    if (s->draw.desc->comp[0].depth <= 8) {
508
        s->pick_color = pick_color8;
509
    } else {
510
        s->pick_color = pick_color16;
511
    }
512
513
    if (inlink->w < 640 || inlink->h < 480) {
514
        av_log(inlink->dst, AV_LOG_ERROR, "min supported resolution is 640x480\n");
515
        return AVERROR(EINVAL);
516
    }
517
518
    s->ww = 300;
519
    s->wh = 300 * 1.6;
520
    s->x = s->xpos * (inlink->w - 1);
521
    s->y = s->ypos * (inlink->h - 1);
522
    if (s->x + s->w >= inlink->w || s->y + s->h >= inlink->h) {
523
        av_log(inlink->dst, AV_LOG_WARNING, "scope position is out of range, clipping\n");
524
        s->x = FFMIN(s->x, inlink->w - s->w);
525
        s->y = FFMIN(s->y, inlink->h - s->h);
526
    }
527
528
    return 0;
529
}
530
531
#define SQR(x) ((x)*(x))
532
533
static int pixscope_filter_frame(AVFilterLink *inlink, AVFrame *in)
534
{
535
    AVFilterContext *ctx  = inlink->dst;
536
    PixscopeContext *s = ctx->priv;
537
    AVFilterLink *outlink = ctx->outputs[0];
538
    AVFrame *out = ff_get_video_buffer(outlink, in->width, in->height);
539
    int max[4] = { 0 }, min[4] = { INT_MAX, INT_MAX, INT_MAX, INT_MAX };
540
    float average[4] = { 0 };
541
    double std[4] = { 0 }, rms[4] = { 0 };
542
    const char rgba[4] = { 'R', 'G', 'B', 'A' };
543
    const char yuva[4] = { 'Y', 'U', 'V', 'A' };
544
    int x, y, X, Y, i, w, h;
545
    char text[128];
546
547
    if (!out) {
548
        av_frame_free(&in);
549
        return AVERROR(ENOMEM);
550
    }
551
    av_frame_copy_props(out, in);
552
    av_frame_copy(out, in);
553
554
    w = s->ww / s->w;
555
    h = s->ww / s->h;
556
557
    if (s->wx >= 0) {
558
        X = (in->width - s->ww) * s->wx;
559
    } else {
560
        X = (in->width - s->ww) * -s->wx;
561
    }
562
    if (s->wy >= 0) {
563
        Y = (in->height - s->wh) * s->wy;
564
    } else {
565
        Y = (in->height - s->wh) * -s->wy;
566
    }
567
568
    if (s->wx < 0) {
569
        if (s->x + s->w >= X && (s->x + s->w <= X + s->ww) &&
570
            s->y + s->h >= Y && (s->y + s->h <= Y + s->wh)) {
571
            X = (in->width - s->ww) * (1 + s->wx);
572
        }
573
    }
574
575
    if (s->wy < 0) {
576
        if (s->x + s->w >= X && (s->x + s->w <= X + s->ww) &&
577
            s->y + s->h >= Y && (s->y + s->h <= Y + s->wh)) {
578
            Y = (in->height - s->wh) * (1 + s->wy);
579
        }
580
    }
581
582
    ff_blend_rectangle(&s->draw, &s->dark, out->data, out->linesize,
583
                       out->width, out->height,
584
                       X,
585
                       Y,
586
                       s->ww,
587
                       s->wh);
588
589
    for (y = 0; y < s->h; y++) {
590
        for (x = 0; x < s->w; x++) {
591
            FFDrawColor color = { { 0 } };
592
            int value[4] = { 0 };
593
594
            s->pick_color(&s->draw, &color, in, x + s->x, y + s->y, value);
595
            ff_fill_rectangle(&s->draw, &color, out->data, out->linesize,
596
                              x * w + (s->ww - 4 - (s->w * w)) / 2 + X, y * h + 2 + Y, w, h);
597
            for (i = 0; i < 4; i++) {
598
                s->values[i][x][y] = value[i];
599
                rms[i]     += (double)value[i] * (double)value[i];
600
                average[i] += value[i];
601
                min[i]      = FFMIN(min[i], value[i]);
602
                max[i]      = FFMAX(max[i], value[i]);
603
            }
604
        }
605
    }
606
607
    ff_blend_rectangle(&s->draw, &s->black, out->data, out->linesize,
608
                       out->width, out->height,
609
                       s->x - 2, s->y - 2, s->w + 4, 1);
610
611
    ff_blend_rectangle(&s->draw, &s->white, out->data, out->linesize,
612
                       out->width, out->height,
613
                       s->x - 1, s->y - 1, s->w + 2, 1);
614
615
    ff_blend_rectangle(&s->draw, &s->white, out->data, out->linesize,
616
                       out->width, out->height,
617
                       s->x - 1, s->y - 1, 1, s->h + 2);
618
619
    ff_blend_rectangle(&s->draw, &s->black, out->data, out->linesize,
620
                       out->width, out->height,
621
                       s->x - 2, s->y - 2, 1, s->h + 4);
622
623
    ff_blend_rectangle(&s->draw, &s->white, out->data, out->linesize,
624
                       out->width, out->height,
625
                       s->x - 1, s->y + 1 + s->h, s->w + 3, 1);
626
627
    ff_blend_rectangle(&s->draw, &s->black, out->data, out->linesize,
628
                       out->width, out->height,
629
                       s->x - 2, s->y + 2 + s->h, s->w + 4, 1);
630
631
    ff_blend_rectangle(&s->draw, &s->white, out->data, out->linesize,
632
                       out->width, out->height,
633
                       s->x + 1 + s->w, s->y - 1, 1, s->h + 2);
634
635
    ff_blend_rectangle(&s->draw, &s->black, out->data, out->linesize,
636
                       out->width, out->height,
637
                       s->x + 2 + s->w, s->y - 2, 1, s->h + 5);
638
639
    for (i = 0; i < 4; i++) {
640
        rms[i] /= s->w * s->h;
641
        rms[i]  = sqrt(rms[i]);
642
        average[i] /= s->w * s->h;
643
    }
644
645
    for (y = 0; y < s->h; y++) {
646
        for (x = 0; x < s->w; x++) {
647
            for (i = 0; i < 4; i++)
648
                std[i] += SQR(s->values[i][x][y] - average[i]);
649
        }
650
    }
651
652
    for (i = 0; i < 4; i++) {
653
        std[i] /= s->w * s->h;
654
        std[i]  = sqrt(std[i]);
655
    }
656
657
    snprintf(text, sizeof(text), "CH   AVG    MIN    MAX    RMS\n");
658
    draw_text(&s->draw, out, &s->white,        X + 28, Y + s->ww +  5,           text, 0);
659
    for (i = 0; i < s->nb_comps; i++) {
660
        int c = s->rgba_map[i];
661
662
        snprintf(text, sizeof(text), "%c  %07.1f %05d %05d %07.1f\n", s->is_rgb ? rgba[i] : yuva[i], average[c], min[c], max[c], rms[c]);
663
        draw_text(&s->draw, out, s->colors[i], X + 28, Y + s->ww + 15 * (i + 1), text, 0);
664
    }
665
    snprintf(text, sizeof(text), "CH   STD\n");
666
    draw_text(&s->draw, out, &s->white,        X + 28, Y + s->ww + 15 * (0 + 5), text, 0);
667
    for (i = 0; i < s->nb_comps; i++) {
668
        int c = s->rgba_map[i];
669
670
        snprintf(text, sizeof(text), "%c  %07.2f\n", s->is_rgb ? rgba[i] : yuva[i], std[c]);
671
        draw_text(&s->draw, out, s->colors[i], X + 28, Y + s->ww + 15 * (i + 6), text, 0);
672
    }
673
674
    av_frame_free(&in);
675
    return ff_filter_frame(outlink, out);
676
}
677
678
static const AVFilterPad pixscope_inputs[] = {
679
    {
680
        .name           = "default",
681
        .type           = AVMEDIA_TYPE_VIDEO,
682
        .filter_frame   = pixscope_filter_frame,
683
        .config_props   = pixscope_config_input,
684
    },
685
    { NULL }
686
};
687
688
static const AVFilterPad pixscope_outputs[] = {
689
    {
690
        .name         = "default",
691
        .type         = AVMEDIA_TYPE_VIDEO,
692
    },
693
    { NULL }
694
};
695
696
AVFilter ff_vf_pixscope = {
697
    .name          = "pixscope",
698
    .description   = NULL_IF_CONFIG_SMALL("Pixel data analysis."),
699
    .priv_size     = sizeof(PixscopeContext),
700
    .priv_class    = &pixscope_class,
701
    .query_formats = query_formats,
702
    .inputs        = pixscope_inputs,
703
    .outputs       = pixscope_outputs,
704
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
705
};
706
707
typedef struct PixelValues {
708
    uint16_t p[4];
709
} PixelValues;
710
711
typedef struct OscilloscopeContext {
712
    const AVClass *class;
713
714
    float xpos, ypos;
715
    float tx, ty;
716
    float size;
717
    float tilt;
718
    float theight, twidth;
719
    float o;
720
    int components;
721
    int grid;
722
    int statistics;
723
    int scope;
724
725
    int x1, y1, x2, y2;
726
    int ox, oy;
727
    int height, width;
728
729
    int max;
730
    int nb_planes;
731
    int nb_comps;
732
    int is_rgb;
733
    uint8_t rgba_map[4];
734
    FFDrawContext draw;
735
    FFDrawColor   dark;
736
    FFDrawColor   black;
737
    FFDrawColor   white;
738
    FFDrawColor   green;
739
    FFDrawColor   blue;
740
    FFDrawColor   red;
741
    FFDrawColor   cyan;
742
    FFDrawColor   magenta;
743
    FFDrawColor   gray;
744
    FFDrawColor  *colors[4];
745
746
    int nb_values;
747
    PixelValues  *values;
748
749
    void (*pick_color)(FFDrawContext *draw, FFDrawColor *color, AVFrame *in, int x, int y, int *value);
750
    void (*draw_trace)(struct OscilloscopeContext *s, AVFrame *frame);
751
} OscilloscopeContext;
752
753
#define OOFFSET(x) offsetof(OscilloscopeContext, x)
754
755
static const AVOption oscilloscope_options[] = {
756
    { "x",  "set scope x position",    OOFFSET(xpos),       AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1,  FLAGSR },
757
    { "y",  "set scope y position",    OOFFSET(ypos),       AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1,  FLAGSR },
758
    { "s",  "set scope size",          OOFFSET(size),       AV_OPT_TYPE_FLOAT, {.dbl=0.8}, 0, 1,  FLAGSR },
759
    { "t",  "set scope tilt",          OOFFSET(tilt),       AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1,  FLAGSR },
760
    { "o",  "set trace opacity",       OOFFSET(o),          AV_OPT_TYPE_FLOAT, {.dbl=0.8}, 0, 1,  FLAGSR },
761
    { "tx", "set trace x position",    OOFFSET(tx),         AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0, 1,  FLAGSR },
762
    { "ty", "set trace y position",    OOFFSET(ty),         AV_OPT_TYPE_FLOAT, {.dbl=0.9}, 0, 1,  FLAGSR },
763
    { "tw", "set trace width",         OOFFSET(twidth),     AV_OPT_TYPE_FLOAT, {.dbl=0.8},.1, 1,  FLAGSR },
764
    { "th", "set trace height",        OOFFSET(theight),    AV_OPT_TYPE_FLOAT, {.dbl=0.3},.1, 1,  FLAGSR },
765
    { "c",  "set components to trace", OOFFSET(components), AV_OPT_TYPE_INT,   {.i64=7},   0, 15, FLAGSR },
766
    { "g",  "draw trace grid",         OOFFSET(grid),       AV_OPT_TYPE_BOOL,  {.i64=1},   0, 1,  FLAGSR },
767
    { "st", "draw statistics",         OOFFSET(statistics), AV_OPT_TYPE_BOOL,  {.i64=1},   0, 1,  FLAGSR },
768
    { "sc", "draw scope",              OOFFSET(scope),      AV_OPT_TYPE_BOOL,  {.i64=1},   0, 1,  FLAGSR },
769
    { NULL }
770
};
771
772
AVFILTER_DEFINE_CLASS(oscilloscope);
773
774
static void oscilloscope_uninit(AVFilterContext *ctx)
775
{
776
    OscilloscopeContext *s = ctx->priv;
777
778
    av_freep(&s->values);
779
}
780
781
static void draw_line(FFDrawContext *draw, int x0, int y0, int x1, int y1,
782
                      AVFrame *out, FFDrawColor *color)
783
{
784
    int dx = FFABS(x1 - x0), sx = x0 < x1 ? 1 : -1;
785
    int dy = FFABS(y1 - y0), sy = y0 < y1 ? 1 : -1;
786
    int err = (dx > dy ? dx : -dy) / 2, e2;
787
    int p, i;
788
789
    for (;;) {
790
        if (x0 >= 0 && y0 >= 0 && x0 < out->width && y0 < out->height) {
791
            for (p = 0; p < draw->nb_planes; p++) {
792
                if (draw->desc->comp[p].depth == 8) {
793
                    if (draw->nb_planes == 1) {
794
                        for (i = 0; i < draw->desc->nb_components; i++) {
795
                            out->data[0][y0 * out->linesize[0] + x0 * draw->pixelstep[0] + i] = color->comp[0].u8[i];
796
                        }
797
                    } else {
798
                        out->data[p][out->linesize[p] * (y0 >> draw->vsub[p]) + (x0 >> draw->hsub[p])] = color->comp[p].u8[0];
799
                    }
800
                } else {
801
                    if (draw->nb_planes == 1) {
802
                        for (i = 0; i < draw->desc->nb_components; i++) {
803
                            AV_WN16(out->data[0] + y0 * out->linesize[0] + (x0 * draw->pixelstep[0] + i), color->comp[0].u16[i]);
804
                        }
805
                    } else {
806
                        AV_WN16(out->data[p] + out->linesize[p] * (y0 >> draw->vsub[p]) + (x0 >> draw->hsub[p]) * 2, color->comp[p].u16[0]);
807
                    }
808
                }
809
            }
810
        }
811
812
        if (x0 == x1 && y0 == y1)
813
            break;
814
815
        e2 = err;
816
817
        if (e2 >-dx) {
818
            err -= dy;
819
            x0 += sx;
820
        }
821
822
        if (e2 < dy) {
823
            err += dx;
824
            y0 += sy;
825
        }
826
    }
827
}
828
829
static void draw_trace8(OscilloscopeContext *s, AVFrame *frame)
830
{
831
    int i, c;
832
833
    for (i = 1; i < s->nb_values; i++) {
834
        for (c = 0; c < s->nb_comps; c++) {
835
            if ((1 << c) & s->components) {
836
                int x = i * s->width / s->nb_values;
837
                int px = (i - 1) * s->width / s->nb_values;
838
                int py = s->height - s->values[i-1].p[s->rgba_map[c]] * s->height / 256;
839
                int y = s->height - s->values[i].p[s->rgba_map[c]] * s->height / 256;
840
841
                draw_line(&s->draw, s->ox + x, s->oy + y, s->ox + px, s->oy + py, frame, s->colors[c]);
842
            }
843
        }
844
    }
845
}
846
847
848
static void draw_trace16(OscilloscopeContext *s, AVFrame *frame)
849
{
850
    int i, c;
851
852
    for (i = 1; i < s->nb_values; i++) {
853
        for (c = 0; c < s->nb_comps; c++) {
854
            if ((1 << c) & s->components) {
855
                int x = i * s->width / s->nb_values;
856
                int px = (i - 1) * s->width / s->nb_values;
857
                int py = s->height - s->values[i-1].p[s->rgba_map[c]] * s->height / s->max;
858
                int y = s->height - s->values[i].p[s->rgba_map[c]] * s->height / s->max;
859
860
                draw_line(&s->draw, s->ox + x, s->oy + y, s->ox + px, s->oy + py, frame, s->colors[c]);
861
            }
862
        }
863
    }
864
}
865
866
static void update_oscilloscope(AVFilterContext *ctx)
867
{
868
    OscilloscopeContext *s = ctx->priv;
869
    AVFilterLink *inlink = ctx->inputs[0];
870
    int cx, cy, size;
871
    double tilt;
872
873
    ff_draw_color(&s->draw, &s->dark,    (uint8_t[]){   0,   0,   0, s->o * 255} );
874
    s->height = s->theight * inlink->h;
875
    s->width = s->twidth * inlink->w;
876
    size = hypot(inlink->w, inlink->h);
877
    size *= s->size;
878
    tilt  = (s->tilt - 0.5) * M_PI;
879
    cx = s->xpos * (inlink->w - 1);
880
    cy = s->ypos * (inlink->h - 1);
881
    s->x1 = cx - size / 2.0 * cos(tilt);
882
    s->x2 = cx + size / 2.0 * cos(tilt);
883
    s->y1 = cy - size / 2.0 * sin(tilt);
884
    s->y2 = cy + size / 2.0 * sin(tilt);
885
    s->ox = (inlink->w - s->width) * s->tx;
886
    s->oy = (inlink->h - s->height) * s->ty;
887
}
888
889
static int oscilloscope_config_input(AVFilterLink *inlink)
890
{
891
    OscilloscopeContext *s = inlink->dst->priv;
892
    int size;
893
894
    s->nb_planes = av_pix_fmt_count_planes(inlink->format);
895
    ff_draw_init(&s->draw, inlink->format, 0);
896
    ff_draw_color(&s->draw, &s->black,   (uint8_t[]){   0,   0,   0, 255} );
897
    ff_draw_color(&s->draw, &s->white,   (uint8_t[]){ 255, 255, 255, 255} );
898
    ff_draw_color(&s->draw, &s->green,   (uint8_t[]){   0, 255,   0, 255} );
899
    ff_draw_color(&s->draw, &s->blue,    (uint8_t[]){   0,   0, 255, 255} );
900
    ff_draw_color(&s->draw, &s->red,     (uint8_t[]){ 255,   0,   0, 255} );
901
    ff_draw_color(&s->draw, &s->cyan,    (uint8_t[]){   0, 255, 255, 255} );
902
    ff_draw_color(&s->draw, &s->magenta, (uint8_t[]){ 255,   0, 255, 255} );
903
    ff_draw_color(&s->draw, &s->gray,    (uint8_t[]){ 128, 128, 128, 255} );
904
    s->nb_comps = s->draw.desc->nb_components;
905
    s->is_rgb   = s->draw.desc->flags & AV_PIX_FMT_FLAG_RGB;
906
907
    if (s->is_rgb) {
908
        s->colors[0] = &s->red;
909
        s->colors[1] = &s->green;
910
        s->colors[2] = &s->blue;
911
        s->colors[3] = &s->white;
912
        ff_fill_rgba_map(s->rgba_map, inlink->format);
913
    } else {
914
        s->colors[0] = &s->white;
915
        s->colors[1] = &s->cyan;
916
        s->colors[2] = &s->magenta;
917
        s->colors[3] = &s->white;
918
        s->rgba_map[0] = 0;
919
        s->rgba_map[1] = 1;
920
        s->rgba_map[2] = 2;
921
        s->rgba_map[3] = 3;
922
    }
923
924
    if (s->draw.desc->comp[0].depth <= 8) {
925
        s->pick_color = pick_color8;
926
        s->draw_trace = draw_trace8;
927
    } else {
928
        s->pick_color = pick_color16;
929
        s->draw_trace = draw_trace16;
930
    }
931
932
    s->max = (1 << s->draw.desc->comp[0].depth);
933
    size = hypot(inlink->w, inlink->h);
934
935
    s->values = av_calloc(size, sizeof(*s->values));
936
    if (!s->values)
937
        return AVERROR(ENOMEM);
938
939
    update_oscilloscope(inlink->dst);
940
941
    return 0;
942
}
943
944
static void draw_scope(OscilloscopeContext *s, int x0, int y0, int x1, int y1,
945
                       AVFrame *out, PixelValues *p, int state)
946
{
947
    int dx = FFABS(x1 - x0), sx = x0 < x1 ? 1 : -1;
948
    int dy = FFABS(y1 - y0), sy = y0 < y1 ? 1 : -1;
949
    int err = (dx > dy ? dx : -dy) / 2, e2;
950
951
    for (;;) {
952
        if (x0 >= 0 && y0 >= 0 && x0 < out->width && y0 < out->height) {
953
            FFDrawColor color = { { 0 } };
954
            int value[4] = { 0 };
955
956
            s->pick_color(&s->draw, &color, out, x0, y0, value);
957
            s->values[s->nb_values].p[0] = value[0];
958
            s->values[s->nb_values].p[1] = value[1];
959
            s->values[s->nb_values].p[2] = value[2];
960
            s->values[s->nb_values].p[3] = value[3];
961
            s->nb_values++;
962
963
            if (s->scope) {
964
                if (s->draw.desc->comp[0].depth == 8) {
965
                    if (s->draw.nb_planes == 1) {
966
                        int i;
967
968
                        for (i = 0; i < s->nb_comps; i++)
969
                            out->data[0][out->linesize[0] * y0 + x0 * s->draw.pixelstep[0] + i] = 255 * ((s->nb_values + state) & 1);
970
                    } else {
971
                        out->data[0][out->linesize[0] * y0 + x0] = 255 * ((s->nb_values + state) & 1);
972
                    }
973
                } else {
974
                    if (s->draw.nb_planes == 1) {
975
                        int i;
976
977
                        for (i = 0; i < s->nb_comps; i++)
978
                            AV_WN16(out->data[0] + out->linesize[0] * y0 + x0 * s->draw.pixelstep[0] + i, (s->max - 1) * ((s->nb_values + state) & 1));
979
                    } else {
980
                        AV_WN16(out->data[0] + out->linesize[0] * y0 + 2 * x0, (s->max - 1) * ((s->nb_values + state) & 1));
981
                    }
982
                }
983
            }
984
        }
985
986
        if (x0 == x1 && y0 == y1)
987
            break;
988
989
        e2 = err;
990
991
        if (e2 >-dx) {
992
            err -= dy;
993
            x0 += sx;
994
        }
995
996
        if (e2 < dy) {
997
            err += dx;
998
            y0 += sy;
999
        }
1000
    }
1001
}
1002
1003
static int oscilloscope_filter_frame(AVFilterLink *inlink, AVFrame *frame)
1004
{
1005
    AVFilterContext *ctx  = inlink->dst;
1006
    OscilloscopeContext *s = ctx->priv;
1007
    AVFilterLink *outlink = ctx->outputs[0];
1008
    float average[4] = { 0 };
1009
    int max[4] = { 0 };
1010
    int min[4] = { INT_MAX, INT_MAX, INT_MAX, INT_MAX };
1011
    int i, c;
1012
1013
    s->nb_values = 0;
1014
    draw_scope(s, s->x1, s->y1, s->x2, s->y2, frame, s->values, inlink->frame_count_in & 1);
1015
    ff_blend_rectangle(&s->draw, &s->dark, frame->data, frame->linesize,
1016
                       frame->width, frame->height,
1017
                       s->ox, s->oy, s->width, s->height + 20 * s->statistics);
1018
1019
    if (s->grid && outlink->h >= 10) {
1020
        ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
1021
                          s->ox, s->oy, s->width - 1, 1);
1022
1023
        for (i = 1; i < 5; i++) {
1024
            ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
1025
                              s->ox, s->oy + i * (s->height - 1) / 4, s->width, 1);
1026
        }
1027
1028
        for (i = 0; i < 10; i++) {
1029
            ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
1030
                              s->ox + i * (s->width - 1) / 10, s->oy, 1, s->height);
1031
        }
1032
1033
        ff_fill_rectangle(&s->draw, &s->gray, frame->data, frame->linesize,
1034
                          s->ox + s->width - 1, s->oy, 1, s->height);
1035
    }
1036
1037
    s->draw_trace(s, frame);
1038
1039
    for (i = 0; i < s->nb_values; i++) {
1040
        for (c = 0; c < s->nb_comps; c++) {
1041
            if ((1 << c) & s->components) {
1042
                max[c] = FFMAX(max[c], s->values[i].p[s->rgba_map[c]]);
1043
                min[c] = FFMIN(min[c], s->values[i].p[s->rgba_map[c]]);
1044
                average[c] += s->values[i].p[s->rgba_map[c]];
1045
            }
1046
        }
1047
    }
1048
    for (c = 0; c < s->nb_comps; c++) {
1049
        average[c] /= s->nb_values;
1050
    }
1051
1052
    if (s->statistics && s->height > 10 && s->width > 280 * av_popcount(s->components)) {
1053
        for (c = 0, i = 0; c < s->nb_comps; c++) {
1054
            if ((1 << c) & s->components) {
1055
                const char rgba[4] = { 'R', 'G', 'B', 'A' };
1056
                const char yuva[4] = { 'Y', 'U', 'V', 'A' };
1057
                char text[128];
1058
1059
                snprintf(text, sizeof(text), "%c avg:%.1f min:%d max:%d\n", s->is_rgb ? rgba[c] : yuva[c], average[c], min[c], max[c]);
1060
                draw_text(&s->draw, frame, &s->white, s->ox +  2 + 280 * i++, s->oy + s->height + 4, text, 0);
1061
            }
1062
        }
1063
    }
1064
1065
    return ff_filter_frame(outlink, frame);
1066
}
1067
1068
static int oscilloscope_process_command(AVFilterContext *ctx, const char *cmd, const char *args,
1069
                                        char *res, int res_len, int flags)
1070
{
1071
    int ret;
1072
1073
    ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
1074
    if (ret < 0)
1075
        return ret;
1076
1077
    update_oscilloscope(ctx);
1078
1079
    return 0;
1080
}
1081
1082
static const AVFilterPad oscilloscope_inputs[] = {
1083
    {
1084
        .name           = "default",
1085
        .type           = AVMEDIA_TYPE_VIDEO,
1086
        .filter_frame   = oscilloscope_filter_frame,
1087
        .config_props   = oscilloscope_config_input,
1088
        .needs_writable = 1,
1089
    },
1090
    { NULL }
1091
};
1092
1093
static const AVFilterPad oscilloscope_outputs[] = {
1094
    {
1095
        .name         = "default",
1096
        .type         = AVMEDIA_TYPE_VIDEO,
1097
    },
1098
    { NULL }
1099
};
1100
1101
AVFilter ff_vf_oscilloscope = {
1102
    .name          = "oscilloscope",
1103
    .description   = NULL_IF_CONFIG_SMALL("2D Video Oscilloscope."),
1104
    .priv_size     = sizeof(OscilloscopeContext),
1105
    .priv_class    = &oscilloscope_class,
1106
    .query_formats = query_formats,
1107
    .uninit        = oscilloscope_uninit,
1108
    .inputs        = oscilloscope_inputs,
1109
    .outputs       = oscilloscope_outputs,
1110
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
1111
    .process_command = oscilloscope_process_command,
1112
};