GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavfilter/avf_showwaves.c Lines: 0 423 0.0 %
Date: 2020-09-25 23:16:12 Branches: 0 233 0.0 %

Line Branch Exec Source
1
/*
2
 * Copyright (c) 2012 Stefano Sabatini
3
 *
4
 * This file is part of FFmpeg.
5
 *
6
 * FFmpeg is free software; you can redistribute it and/or
7
 * modify it under the terms of the GNU Lesser General Public
8
 * License as published by the Free Software Foundation; either
9
 * version 2.1 of the License, or (at your option) any later version.
10
 *
11
 * FFmpeg is distributed in the hope that it will be useful,
12
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14
 * Lesser General Public License for more details.
15
 *
16
 * You should have received a copy of the GNU Lesser General Public
17
 * License along with FFmpeg; if not, write to the Free Software
18
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19
 */
20
21
/**
22
 * @file
23
 * audio to video multimedia filter
24
 */
25
26
#include "libavutil/avassert.h"
27
#include "libavutil/avstring.h"
28
#include "libavutil/channel_layout.h"
29
#include "libavutil/opt.h"
30
#include "libavutil/parseutils.h"
31
#include "avfilter.h"
32
#include "filters.h"
33
#include "formats.h"
34
#include "audio.h"
35
#include "video.h"
36
#include "internal.h"
37
38
enum ShowWavesMode {
39
    MODE_POINT,
40
    MODE_LINE,
41
    MODE_P2P,
42
    MODE_CENTERED_LINE,
43
    MODE_NB,
44
};
45
46
enum ShowWavesScale {
47
    SCALE_LIN,
48
    SCALE_LOG,
49
    SCALE_SQRT,
50
    SCALE_CBRT,
51
    SCALE_NB,
52
};
53
54
enum ShowWavesDrawMode {
55
    DRAW_SCALE,
56
    DRAW_FULL,
57
    DRAW_NB,
58
};
59
60
enum ShowWavesFilterMode {
61
    FILTER_AVERAGE,
62
    FILTER_PEAK,
63
    FILTER_NB,
64
};
65
66
struct frame_node {
67
    AVFrame *frame;
68
    struct frame_node *next;
69
};
70
71
typedef struct ShowWavesContext {
72
    const AVClass *class;
73
    int w, h;
74
    AVRational rate;
75
    char *colors;
76
    int buf_idx;
77
    int16_t *buf_idy;    /* y coordinate of previous sample for each channel */
78
    AVFrame *outpicref;
79
    int n;
80
    int pixstep;
81
    int sample_count_mod;
82
    int mode;                   ///< ShowWavesMode
83
    int scale;                  ///< ShowWavesScale
84
    int draw_mode;              ///< ShowWavesDrawMode
85
    int split_channels;
86
    int filter_mode;
87
    uint8_t *fg;
88
89
    int (*get_h)(int16_t sample, int height);
90
    void (*draw_sample)(uint8_t *buf, int height, int linesize,
91
                        int16_t *prev_y, const uint8_t color[4], int h);
92
93
    /* single picture */
94
    int single_pic;
95
    struct frame_node *audio_frames;
96
    struct frame_node *last_frame;
97
    int64_t total_samples;
98
    int64_t *sum; /* abs sum of the samples per channel */
99
} ShowWavesContext;
100
101
#define OFFSET(x) offsetof(ShowWavesContext, x)
102
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
103
104
static const AVOption showwaves_options[] = {
105
    { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS },
106
    { "s",    "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS },
107
    { "mode", "select display mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_POINT}, 0, MODE_NB-1, FLAGS, "mode"},
108
        { "point", "draw a point for each sample",         0, AV_OPT_TYPE_CONST, {.i64=MODE_POINT},         .flags=FLAGS, .unit="mode"},
109
        { "line",  "draw a line for each sample",          0, AV_OPT_TYPE_CONST, {.i64=MODE_LINE},          .flags=FLAGS, .unit="mode"},
110
        { "p2p",   "draw a line between samples",          0, AV_OPT_TYPE_CONST, {.i64=MODE_P2P},           .flags=FLAGS, .unit="mode"},
111
        { "cline", "draw a centered line for each sample", 0, AV_OPT_TYPE_CONST, {.i64=MODE_CENTERED_LINE}, .flags=FLAGS, .unit="mode"},
112
    { "n",    "set how many samples to show in the same point", OFFSET(n), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, FLAGS },
113
    { "rate", "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, FLAGS },
114
    { "r",    "set video rate", OFFSET(rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, FLAGS },
115
    { "split_channels", "draw channels separately", OFFSET(split_channels), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
116
    { "colors", "set channels colors", OFFSET(colors), AV_OPT_TYPE_STRING, {.str = "red|green|blue|yellow|orange|lime|pink|magenta|brown" }, 0, 0, FLAGS },
117
    { "scale", "set amplitude scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, SCALE_NB-1, FLAGS, .unit="scale" },
118
        { "lin", "linear",         0, AV_OPT_TYPE_CONST, {.i64=SCALE_LIN}, .flags=FLAGS, .unit="scale"},
119
        { "log", "logarithmic",    0, AV_OPT_TYPE_CONST, {.i64=SCALE_LOG}, .flags=FLAGS, .unit="scale"},
120
        { "sqrt", "square root",   0, AV_OPT_TYPE_CONST, {.i64=SCALE_SQRT}, .flags=FLAGS, .unit="scale"},
121
        { "cbrt", "cubic root",    0, AV_OPT_TYPE_CONST, {.i64=SCALE_CBRT}, .flags=FLAGS, .unit="scale"},
122
    { "draw", "set draw mode", OFFSET(draw_mode), AV_OPT_TYPE_INT, {.i64 = DRAW_SCALE}, 0, DRAW_NB-1, FLAGS, .unit="draw" },
123
        { "scale", "scale pixel values for each drawn sample", 0, AV_OPT_TYPE_CONST, {.i64=DRAW_SCALE}, .flags=FLAGS, .unit="draw"},
124
        { "full",  "draw every pixel for sample directly",     0, AV_OPT_TYPE_CONST, {.i64=DRAW_FULL},  .flags=FLAGS, .unit="draw"},
125
    { NULL }
126
};
127
128
AVFILTER_DEFINE_CLASS(showwaves);
129
130
static av_cold void uninit(AVFilterContext *ctx)
131
{
132
    ShowWavesContext *showwaves = ctx->priv;
133
134
    av_frame_free(&showwaves->outpicref);
135
    av_freep(&showwaves->buf_idy);
136
    av_freep(&showwaves->fg);
137
138
    if (showwaves->single_pic) {
139
        struct frame_node *node = showwaves->audio_frames;
140
        while (node) {
141
            struct frame_node *tmp = node;
142
143
            node = node->next;
144
            av_frame_free(&tmp->frame);
145
            av_freep(&tmp);
146
        }
147
        av_freep(&showwaves->sum);
148
        showwaves->last_frame = NULL;
149
    }
150
}
151
152
static int query_formats(AVFilterContext *ctx)
153
{
154
    AVFilterFormats *formats = NULL;
155
    AVFilterChannelLayouts *layouts = NULL;
156
    AVFilterLink *inlink = ctx->inputs[0];
157
    AVFilterLink *outlink = ctx->outputs[0];
158
    static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
159
    static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_RGBA, AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE };
160
    int ret;
161
162
    /* set input audio formats */
163
    formats = ff_make_format_list(sample_fmts);
164
    if ((ret = ff_formats_ref(formats, &inlink->outcfg.formats)) < 0)
165
        return ret;
166
167
    layouts = ff_all_channel_layouts();
168
    if ((ret = ff_channel_layouts_ref(layouts, &inlink->outcfg.channel_layouts)) < 0)
169
        return ret;
170
171
    formats = ff_all_samplerates();
172
    if ((ret = ff_formats_ref(formats, &inlink->outcfg.samplerates)) < 0)
173
        return ret;
174
175
    /* set output video format */
176
    formats = ff_make_format_list(pix_fmts);
177
    if ((ret = ff_formats_ref(formats, &outlink->incfg.formats)) < 0)
178
        return ret;
179
180
    return 0;
181
}
182
183
static int get_lin_h(int16_t sample, int height)
184
{
185
    return height/2 - av_rescale(sample, height/2, INT16_MAX);
186
}
187
188
static int get_lin_h2(int16_t sample, int height)
189
{
190
    return av_rescale(FFABS(sample), height, INT16_MAX);
191
}
192
193
static int get_log_h(int16_t sample, int height)
194
{
195
    return height/2 - FFSIGN(sample) * (log10(1 + FFABS(sample)) * (height/2) / log10(1 + INT16_MAX));
196
}
197
198
static int get_log_h2(int16_t sample, int height)
199
{
200
    return log10(1 + FFABS(sample)) * height / log10(1 + INT16_MAX);
201
}
202
203
static int get_sqrt_h(int16_t sample, int height)
204
{
205
    return height/2 - FFSIGN(sample) * (sqrt(FFABS(sample)) * (height/2) / sqrt(INT16_MAX));
206
}
207
208
static int get_sqrt_h2(int16_t sample, int height)
209
{
210
    return sqrt(FFABS(sample)) * height / sqrt(INT16_MAX);
211
}
212
213
static int get_cbrt_h(int16_t sample, int height)
214
{
215
    return height/2 - FFSIGN(sample) * (cbrt(FFABS(sample)) * (height/2) / cbrt(INT16_MAX));
216
}
217
218
static int get_cbrt_h2(int16_t sample, int height)
219
{
220
    return cbrt(FFABS(sample)) * height / cbrt(INT16_MAX);
221
}
222
223
static void draw_sample_point_rgba_scale(uint8_t *buf, int height, int linesize,
224
                                         int16_t *prev_y,
225
                                         const uint8_t color[4], int h)
226
{
227
    if (h >= 0 && h < height) {
228
        buf[h * linesize + 0] += color[0];
229
        buf[h * linesize + 1] += color[1];
230
        buf[h * linesize + 2] += color[2];
231
        buf[h * linesize + 3] += color[3];
232
    }
233
}
234
235
static void draw_sample_point_rgba_full(uint8_t *buf, int height, int linesize,
236
                                   int16_t *prev_y,
237
                                   const uint8_t color[4], int h)
238
{
239
    if (h >= 0 && h < height) {
240
        buf[h * linesize + 0] = color[0];
241
        buf[h * linesize + 1] = color[1];
242
        buf[h * linesize + 2] = color[2];
243
        buf[h * linesize + 3] = color[3];
244
    }
245
}
246
247
static void draw_sample_line_rgba_scale(uint8_t *buf, int height, int linesize,
248
                                        int16_t *prev_y,
249
                                        const uint8_t color[4], int h)
250
{
251
    int k;
252
    int start   = height/2;
253
    int end     = av_clip(h, 0, height-1);
254
    if (start > end)
255
        FFSWAP(int16_t, start, end);
256
    for (k = start; k < end; k++) {
257
        buf[k * linesize + 0] += color[0];
258
        buf[k * linesize + 1] += color[1];
259
        buf[k * linesize + 2] += color[2];
260
        buf[k * linesize + 3] += color[3];
261
    }
262
}
263
264
static void draw_sample_line_rgba_full(uint8_t *buf, int height, int linesize,
265
                                       int16_t *prev_y,
266
                                       const uint8_t color[4], int h)
267
{
268
    int k;
269
    int start   = height/2;
270
    int end     = av_clip(h, 0, height-1);
271
    if (start > end)
272
        FFSWAP(int16_t, start, end);
273
    for (k = start; k < end; k++) {
274
        buf[k * linesize + 0] = color[0];
275
        buf[k * linesize + 1] = color[1];
276
        buf[k * linesize + 2] = color[2];
277
        buf[k * linesize + 3] = color[3];
278
    }
279
}
280
281
static void draw_sample_p2p_rgba_scale(uint8_t *buf, int height, int linesize,
282
                                       int16_t *prev_y,
283
                                       const uint8_t color[4], int h)
284
{
285
    int k;
286
    if (h >= 0 && h < height) {
287
        buf[h * linesize + 0] += color[0];
288
        buf[h * linesize + 1] += color[1];
289
        buf[h * linesize + 2] += color[2];
290
        buf[h * linesize + 3] += color[3];
291
        if (*prev_y && h != *prev_y) {
292
            int start = *prev_y;
293
            int end = av_clip(h, 0, height-1);
294
            if (start > end)
295
                FFSWAP(int16_t, start, end);
296
            for (k = start + 1; k < end; k++) {
297
                buf[k * linesize + 0] += color[0];
298
                buf[k * linesize + 1] += color[1];
299
                buf[k * linesize + 2] += color[2];
300
                buf[k * linesize + 3] += color[3];
301
            }
302
        }
303
    }
304
    *prev_y = h;
305
}
306
307
static void draw_sample_p2p_rgba_full(uint8_t *buf, int height, int linesize,
308
                                      int16_t *prev_y,
309
                                      const uint8_t color[4], int h)
310
{
311
    int k;
312
    if (h >= 0 && h < height) {
313
        buf[h * linesize + 0] = color[0];
314
        buf[h * linesize + 1] = color[1];
315
        buf[h * linesize + 2] = color[2];
316
        buf[h * linesize + 3] = color[3];
317
        if (*prev_y && h != *prev_y) {
318
            int start = *prev_y;
319
            int end = av_clip(h, 0, height-1);
320
            if (start > end)
321
                FFSWAP(int16_t, start, end);
322
            for (k = start + 1; k < end; k++) {
323
                buf[k * linesize + 0] = color[0];
324
                buf[k * linesize + 1] = color[1];
325
                buf[k * linesize + 2] = color[2];
326
                buf[k * linesize + 3] = color[3];
327
            }
328
        }
329
    }
330
    *prev_y = h;
331
}
332
333
static void draw_sample_cline_rgba_scale(uint8_t *buf, int height, int linesize,
334
                                         int16_t *prev_y,
335
                                         const uint8_t color[4], int h)
336
{
337
    int k;
338
    const int start = (height - h) / 2;
339
    const int end   = start + h;
340
    for (k = start; k < end; k++) {
341
        buf[k * linesize + 0] += color[0];
342
        buf[k * linesize + 1] += color[1];
343
        buf[k * linesize + 2] += color[2];
344
        buf[k * linesize + 3] += color[3];
345
    }
346
}
347
 static void draw_sample_cline_rgba_full(uint8_t *buf, int height, int linesize,
348
                                         int16_t *prev_y,
349
                                         const uint8_t color[4], int h)
350
{
351
    int k;
352
    const int start = (height - h) / 2;
353
    const int end   = start + h;
354
    for (k = start; k < end; k++) {
355
        buf[k * linesize + 0] = color[0];
356
        buf[k * linesize + 1] = color[1];
357
        buf[k * linesize + 2] = color[2];
358
        buf[k * linesize + 3] = color[3];
359
    }
360
}
361
362
static void draw_sample_point_gray(uint8_t *buf, int height, int linesize,
363
                                   int16_t *prev_y,
364
                                   const uint8_t color[4], int h)
365
{
366
    if (h >= 0 && h < height)
367
        buf[h * linesize] += color[0];
368
}
369
370
static void draw_sample_line_gray(uint8_t *buf, int height, int linesize,
371
                                  int16_t *prev_y,
372
                                  const uint8_t color[4], int h)
373
{
374
    int k;
375
    int start   = height/2;
376
    int end     = av_clip(h, 0, height-1);
377
    if (start > end)
378
        FFSWAP(int16_t, start, end);
379
    for (k = start; k < end; k++)
380
        buf[k * linesize] += color[0];
381
}
382
383
static void draw_sample_p2p_gray(uint8_t *buf, int height, int linesize,
384
                                 int16_t *prev_y,
385
                                 const uint8_t color[4], int h)
386
{
387
    int k;
388
    if (h >= 0 && h < height) {
389
        buf[h * linesize] += color[0];
390
        if (*prev_y && h != *prev_y) {
391
            int start = *prev_y;
392
            int end = av_clip(h, 0, height-1);
393
            if (start > end)
394
                FFSWAP(int16_t, start, end);
395
            for (k = start + 1; k < end; k++)
396
                buf[k * linesize] += color[0];
397
        }
398
    }
399
    *prev_y = h;
400
}
401
402
static void draw_sample_cline_gray(uint8_t *buf, int height, int linesize,
403
                                   int16_t *prev_y,
404
                                   const uint8_t color[4], int h)
405
{
406
    int k;
407
    const int start = (height - h) / 2;
408
    const int end   = start + h;
409
    for (k = start; k < end; k++)
410
        buf[k * linesize] += color[0];
411
}
412
413
static int config_output(AVFilterLink *outlink)
414
{
415
    AVFilterContext *ctx = outlink->src;
416
    AVFilterLink *inlink = ctx->inputs[0];
417
    ShowWavesContext *showwaves = ctx->priv;
418
    int nb_channels = inlink->channels;
419
    char *colors, *saveptr = NULL;
420
    uint8_t x;
421
    int ch;
422
423
    if (showwaves->single_pic)
424
        showwaves->n = 1;
425
426
    if (!showwaves->n)
427
        showwaves->n = FFMAX(1, av_rescale_q(inlink->sample_rate, av_make_q(1, showwaves->w), showwaves->rate));
428
429
    showwaves->buf_idx = 0;
430
    if (!(showwaves->buf_idy = av_mallocz_array(nb_channels, sizeof(*showwaves->buf_idy)))) {
431
        av_log(ctx, AV_LOG_ERROR, "Could not allocate showwaves buffer\n");
432
        return AVERROR(ENOMEM);
433
    }
434
    outlink->w = showwaves->w;
435
    outlink->h = showwaves->h;
436
    outlink->sample_aspect_ratio = (AVRational){1,1};
437
438
    outlink->frame_rate = av_div_q((AVRational){inlink->sample_rate,showwaves->n},
439
                                   (AVRational){showwaves->w,1});
440
441
    av_log(ctx, AV_LOG_VERBOSE, "s:%dx%d r:%f n:%d\n",
442
           showwaves->w, showwaves->h, av_q2d(outlink->frame_rate), showwaves->n);
443
444
    switch (outlink->format) {
445
    case AV_PIX_FMT_GRAY8:
446
        switch (showwaves->mode) {
447
        case MODE_POINT:         showwaves->draw_sample = draw_sample_point_gray; break;
448
        case MODE_LINE:          showwaves->draw_sample = draw_sample_line_gray;  break;
449
        case MODE_P2P:           showwaves->draw_sample = draw_sample_p2p_gray;   break;
450
        case MODE_CENTERED_LINE: showwaves->draw_sample = draw_sample_cline_gray; break;
451
        default:
452
            return AVERROR_BUG;
453
        }
454
        showwaves->pixstep = 1;
455
        break;
456
    case AV_PIX_FMT_RGBA:
457
        switch (showwaves->mode) {
458
        case MODE_POINT:         showwaves->draw_sample = showwaves->draw_mode == DRAW_SCALE ? draw_sample_point_rgba_scale : draw_sample_point_rgba_full; break;
459
        case MODE_LINE:          showwaves->draw_sample = showwaves->draw_mode == DRAW_SCALE ? draw_sample_line_rgba_scale  : draw_sample_line_rgba_full;  break;
460
        case MODE_P2P:           showwaves->draw_sample = showwaves->draw_mode == DRAW_SCALE ? draw_sample_p2p_rgba_scale   : draw_sample_p2p_rgba_full;   break;
461
        case MODE_CENTERED_LINE: showwaves->draw_sample = showwaves->draw_mode == DRAW_SCALE ? draw_sample_cline_rgba_scale : draw_sample_cline_rgba_full; break;
462
        default:
463
            return AVERROR_BUG;
464
        }
465
        showwaves->pixstep = 4;
466
        break;
467
    }
468
469
    switch (showwaves->scale) {
470
    case SCALE_LIN:
471
        switch (showwaves->mode) {
472
        case MODE_POINT:
473
        case MODE_LINE:
474
        case MODE_P2P:           showwaves->get_h = get_lin_h;  break;
475
        case MODE_CENTERED_LINE: showwaves->get_h = get_lin_h2; break;
476
        default:
477
            return AVERROR_BUG;
478
        }
479
        break;
480
    case SCALE_LOG:
481
        switch (showwaves->mode) {
482
        case MODE_POINT:
483
        case MODE_LINE:
484
        case MODE_P2P:           showwaves->get_h = get_log_h;  break;
485
        case MODE_CENTERED_LINE: showwaves->get_h = get_log_h2; break;
486
        default:
487
            return AVERROR_BUG;
488
        }
489
        break;
490
    case SCALE_SQRT:
491
        switch (showwaves->mode) {
492
        case MODE_POINT:
493
        case MODE_LINE:
494
        case MODE_P2P:           showwaves->get_h = get_sqrt_h;  break;
495
        case MODE_CENTERED_LINE: showwaves->get_h = get_sqrt_h2; break;
496
        default:
497
            return AVERROR_BUG;
498
        }
499
        break;
500
    case SCALE_CBRT:
501
        switch (showwaves->mode) {
502
        case MODE_POINT:
503
        case MODE_LINE:
504
        case MODE_P2P:           showwaves->get_h = get_cbrt_h;  break;
505
        case MODE_CENTERED_LINE: showwaves->get_h = get_cbrt_h2; break;
506
        default:
507
            return AVERROR_BUG;
508
        }
509
        break;
510
    }
511
512
    showwaves->fg = av_malloc_array(nb_channels, 4 * sizeof(*showwaves->fg));
513
    if (!showwaves->fg)
514
        return AVERROR(ENOMEM);
515
516
    colors = av_strdup(showwaves->colors);
517
    if (!colors)
518
        return AVERROR(ENOMEM);
519
520
    if (showwaves->draw_mode == DRAW_SCALE) {
521
        /* multiplication factor, pre-computed to avoid in-loop divisions */
522
        x = 255 / ((showwaves->split_channels ? 1 : nb_channels) * showwaves->n);
523
    } else {
524
        x = 255;
525
    }
526
    if (outlink->format == AV_PIX_FMT_RGBA) {
527
        uint8_t fg[4] = { 0xff, 0xff, 0xff, 0xff };
528
529
        for (ch = 0; ch < nb_channels; ch++) {
530
            char *color;
531
532
            color = av_strtok(ch == 0 ? colors : NULL, " |", &saveptr);
533
            if (color)
534
                av_parse_color(fg, color, -1, ctx);
535
            showwaves->fg[4*ch + 0] = fg[0] * x / 255.;
536
            showwaves->fg[4*ch + 1] = fg[1] * x / 255.;
537
            showwaves->fg[4*ch + 2] = fg[2] * x / 255.;
538
            showwaves->fg[4*ch + 3] = fg[3] * x / 255.;
539
        }
540
    } else {
541
        for (ch = 0; ch < nb_channels; ch++)
542
            showwaves->fg[4 * ch + 0] = x;
543
    }
544
    av_free(colors);
545
546
    return 0;
547
}
548
549
inline static int push_frame(AVFilterLink *outlink)
550
{
551
    AVFilterContext *ctx = outlink->src;
552
    AVFilterLink *inlink = ctx->inputs[0];
553
    ShowWavesContext *showwaves = outlink->src->priv;
554
    int nb_channels = inlink->channels;
555
    int ret, i;
556
557
    ret = ff_filter_frame(outlink, showwaves->outpicref);
558
    showwaves->outpicref = NULL;
559
    showwaves->buf_idx = 0;
560
    for (i = 0; i < nb_channels; i++)
561
        showwaves->buf_idy[i] = 0;
562
    return ret;
563
}
564
565
static int push_single_pic(AVFilterLink *outlink)
566
{
567
    AVFilterContext *ctx = outlink->src;
568
    AVFilterLink *inlink = ctx->inputs[0];
569
    ShowWavesContext *showwaves = ctx->priv;
570
    int64_t n = 0, column_max_samples = showwaves->total_samples / outlink->w;
571
    int64_t remaining_samples = showwaves->total_samples - (column_max_samples * outlink->w);
572
    int64_t last_column_samples = column_max_samples + remaining_samples;
573
    AVFrame *out = showwaves->outpicref;
574
    struct frame_node *node;
575
    const int nb_channels = inlink->channels;
576
    const int ch_height = showwaves->split_channels ? outlink->h / nb_channels : outlink->h;
577
    const int linesize = out->linesize[0];
578
    const int pixstep = showwaves->pixstep;
579
    int col = 0;
580
    int64_t *sum = showwaves->sum;
581
582
    if (column_max_samples == 0) {
583
        av_log(ctx, AV_LOG_ERROR, "Too few samples\n");
584
        return AVERROR(EINVAL);
585
    }
586
587
    av_log(ctx, AV_LOG_DEBUG, "Create frame averaging %"PRId64" samples per column\n", column_max_samples);
588
589
    memset(sum, 0, nb_channels);
590
591
    for (node = showwaves->audio_frames; node; node = node->next) {
592
        int i;
593
        const AVFrame *frame = node->frame;
594
        const int16_t *p = (const int16_t *)frame->data[0];
595
596
        for (i = 0; i < frame->nb_samples; i++) {
597
            int64_t max_samples = col == outlink->w - 1 ? last_column_samples: column_max_samples;
598
            int ch;
599
600
            switch (showwaves->filter_mode) {
601
            case FILTER_AVERAGE:
602
                for (ch = 0; ch < nb_channels; ch++)
603
                    sum[ch] += abs(p[ch + i*nb_channels]) << 1;
604
                break;
605
            case FILTER_PEAK:
606
                for (ch = 0; ch < nb_channels; ch++)
607
                    sum[ch] = FFMAX(sum[ch], abs(p[ch + i*nb_channels]));
608
                break;
609
            }
610
611
            n++;
612
            if (n == max_samples) {
613
                for (ch = 0; ch < nb_channels; ch++) {
614
                    int16_t sample = sum[ch] / (showwaves->filter_mode == FILTER_AVERAGE ? max_samples : 1);
615
                    uint8_t *buf = out->data[0] + col * pixstep;
616
                    int h;
617
618
                    if (showwaves->split_channels)
619
                        buf += ch*ch_height*linesize;
620
                    av_assert0(col < outlink->w);
621
                    h = showwaves->get_h(sample, ch_height);
622
                    showwaves->draw_sample(buf, ch_height, linesize, &showwaves->buf_idy[ch], &showwaves->fg[ch * 4], h);
623
                    sum[ch] = 0;
624
                }
625
                col++;
626
                n = 0;
627
            }
628
        }
629
    }
630
631
    return push_frame(outlink);
632
}
633
634
635
static int request_frame(AVFilterLink *outlink)
636
{
637
    ShowWavesContext *showwaves = outlink->src->priv;
638
    AVFilterLink *inlink = outlink->src->inputs[0];
639
    int ret;
640
641
    ret = ff_request_frame(inlink);
642
    if (ret == AVERROR_EOF && showwaves->outpicref) {
643
        if (showwaves->single_pic)
644
            push_single_pic(outlink);
645
        else
646
            push_frame(outlink);
647
    }
648
649
    return ret;
650
}
651
652
static int alloc_out_frame(ShowWavesContext *showwaves, const int16_t *p,
653
                           const AVFilterLink *inlink, AVFilterLink *outlink,
654
                           const AVFrame *in)
655
{
656
    if (!showwaves->outpicref) {
657
        int j;
658
        AVFrame *out = showwaves->outpicref =
659
            ff_get_video_buffer(outlink, outlink->w, outlink->h);
660
        if (!out)
661
            return AVERROR(ENOMEM);
662
        out->width  = outlink->w;
663
        out->height = outlink->h;
664
        out->pts = in->pts + av_rescale_q((p - (int16_t *)in->data[0]) / inlink->channels,
665
                                          av_make_q(1, inlink->sample_rate),
666
                                          outlink->time_base);
667
        for (j = 0; j < outlink->h; j++)
668
            memset(out->data[0] + j*out->linesize[0], 0, outlink->w * showwaves->pixstep);
669
    }
670
    return 0;
671
}
672
673
static av_cold int init(AVFilterContext *ctx)
674
{
675
    ShowWavesContext *showwaves = ctx->priv;
676
677
    if (!strcmp(ctx->filter->name, "showwavespic")) {
678
        showwaves->single_pic = 1;
679
        showwaves->mode = MODE_CENTERED_LINE;
680
    }
681
682
    return 0;
683
}
684
685
#if CONFIG_SHOWWAVES_FILTER
686
687
static int showwaves_filter_frame(AVFilterLink *inlink, AVFrame *insamples)
688
{
689
    AVFilterContext *ctx = inlink->dst;
690
    AVFilterLink *outlink = ctx->outputs[0];
691
    ShowWavesContext *showwaves = ctx->priv;
692
    const int nb_samples = insamples->nb_samples;
693
    AVFrame *outpicref = showwaves->outpicref;
694
    int16_t *p = (int16_t *)insamples->data[0];
695
    int nb_channels = inlink->channels;
696
    int i, j, ret = 0;
697
    const int pixstep = showwaves->pixstep;
698
    const int n = showwaves->n;
699
    const int ch_height = showwaves->split_channels ? outlink->h / nb_channels : outlink->h;
700
701
    /* draw data in the buffer */
702
    for (i = 0; i < nb_samples; i++) {
703
704
        ret = alloc_out_frame(showwaves, p, inlink, outlink, insamples);
705
        if (ret < 0)
706
            goto end;
707
        outpicref = showwaves->outpicref;
708
709
        for (j = 0; j < nb_channels; j++) {
710
            uint8_t *buf = outpicref->data[0] + showwaves->buf_idx * pixstep;
711
            const int linesize = outpicref->linesize[0];
712
            int h;
713
714
            if (showwaves->split_channels)
715
                buf += j*ch_height*linesize;
716
            h = showwaves->get_h(*p++, ch_height);
717
            showwaves->draw_sample(buf, ch_height, linesize,
718
                                   &showwaves->buf_idy[j], &showwaves->fg[j * 4], h);
719
        }
720
721
        showwaves->sample_count_mod++;
722
        if (showwaves->sample_count_mod == n) {
723
            showwaves->sample_count_mod = 0;
724
            showwaves->buf_idx++;
725
        }
726
        if (showwaves->buf_idx == showwaves->w ||
727
            (ff_outlink_get_status(inlink) && i == nb_samples - 1))
728
            if ((ret = push_frame(outlink)) < 0)
729
                break;
730
        outpicref = showwaves->outpicref;
731
    }
732
733
end:
734
    av_frame_free(&insamples);
735
    return ret;
736
}
737
738
static int activate(AVFilterContext *ctx)
739
{
740
    AVFilterLink *inlink = ctx->inputs[0];
741
    AVFilterLink *outlink = ctx->outputs[0];
742
    ShowWavesContext *showwaves = ctx->priv;
743
    AVFrame *in;
744
    const int nb_samples = showwaves->n * outlink->w;
745
    int ret;
746
747
    FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
748
749
    ret = ff_inlink_consume_samples(inlink, nb_samples, nb_samples, &in);
750
    if (ret < 0)
751
        return ret;
752
    if (ret > 0)
753
        return showwaves_filter_frame(inlink, in);
754
755
    FF_FILTER_FORWARD_STATUS(inlink, outlink);
756
    FF_FILTER_FORWARD_WANTED(outlink, inlink);
757
758
    return FFERROR_NOT_READY;
759
}
760
761
static const AVFilterPad showwaves_inputs[] = {
762
    {
763
        .name         = "default",
764
        .type         = AVMEDIA_TYPE_AUDIO,
765
    },
766
    { NULL }
767
};
768
769
static const AVFilterPad showwaves_outputs[] = {
770
    {
771
        .name          = "default",
772
        .type          = AVMEDIA_TYPE_VIDEO,
773
        .config_props  = config_output,
774
    },
775
    { NULL }
776
};
777
778
AVFilter ff_avf_showwaves = {
779
    .name          = "showwaves",
780
    .description   = NULL_IF_CONFIG_SMALL("Convert input audio to a video output."),
781
    .init          = init,
782
    .uninit        = uninit,
783
    .query_formats = query_formats,
784
    .priv_size     = sizeof(ShowWavesContext),
785
    .inputs        = showwaves_inputs,
786
    .activate      = activate,
787
    .outputs       = showwaves_outputs,
788
    .priv_class    = &showwaves_class,
789
};
790
791
#endif // CONFIG_SHOWWAVES_FILTER
792
793
#if CONFIG_SHOWWAVESPIC_FILTER
794
795
#define OFFSET(x) offsetof(ShowWavesContext, x)
796
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
797
798
static const AVOption showwavespic_options[] = {
799
    { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS },
800
    { "s",    "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "600x240"}, 0, 0, FLAGS },
801
    { "split_channels", "draw channels separately", OFFSET(split_channels), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
802
    { "colors", "set channels colors", OFFSET(colors), AV_OPT_TYPE_STRING, {.str = "red|green|blue|yellow|orange|lime|pink|magenta|brown" }, 0, 0, FLAGS },
803
    { "scale", "set amplitude scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, SCALE_NB-1, FLAGS, .unit="scale" },
804
        { "lin", "linear",         0, AV_OPT_TYPE_CONST, {.i64=SCALE_LIN}, .flags=FLAGS, .unit="scale"},
805
        { "log", "logarithmic",    0, AV_OPT_TYPE_CONST, {.i64=SCALE_LOG}, .flags=FLAGS, .unit="scale"},
806
        { "sqrt", "square root",   0, AV_OPT_TYPE_CONST, {.i64=SCALE_SQRT}, .flags=FLAGS, .unit="scale"},
807
        { "cbrt", "cubic root",    0, AV_OPT_TYPE_CONST, {.i64=SCALE_CBRT}, .flags=FLAGS, .unit="scale"},
808
    { "draw", "set draw mode", OFFSET(draw_mode), AV_OPT_TYPE_INT, {.i64 = DRAW_SCALE}, 0, DRAW_NB-1, FLAGS, .unit="draw" },
809
        { "scale", "scale pixel values for each drawn sample", 0, AV_OPT_TYPE_CONST, {.i64=DRAW_SCALE}, .flags=FLAGS, .unit="draw"},
810
        { "full",  "draw every pixel for sample directly",     0, AV_OPT_TYPE_CONST, {.i64=DRAW_FULL},  .flags=FLAGS, .unit="draw"},
811
    { "filter", "set filter mode", OFFSET(filter_mode), AV_OPT_TYPE_INT, {.i64 = FILTER_AVERAGE}, 0, FILTER_NB-1, FLAGS, .unit="filter" },
812
        { "average", "use average samples", 0, AV_OPT_TYPE_CONST, {.i64=FILTER_AVERAGE}, .flags=FLAGS, .unit="filter"},
813
        { "peak",    "use peak samples",    0, AV_OPT_TYPE_CONST, {.i64=FILTER_PEAK},    .flags=FLAGS, .unit="filter"},
814
    { NULL }
815
};
816
817
AVFILTER_DEFINE_CLASS(showwavespic);
818
819
static int showwavespic_config_input(AVFilterLink *inlink)
820
{
821
    AVFilterContext *ctx = inlink->dst;
822
    ShowWavesContext *showwaves = ctx->priv;
823
824
    if (showwaves->single_pic) {
825
        showwaves->sum = av_mallocz_array(inlink->channels, sizeof(*showwaves->sum));
826
        if (!showwaves->sum)
827
            return AVERROR(ENOMEM);
828
    }
829
830
    return 0;
831
}
832
833
static int showwavespic_filter_frame(AVFilterLink *inlink, AVFrame *insamples)
834
{
835
    AVFilterContext *ctx = inlink->dst;
836
    AVFilterLink *outlink = ctx->outputs[0];
837
    ShowWavesContext *showwaves = ctx->priv;
838
    int16_t *p = (int16_t *)insamples->data[0];
839
    int ret = 0;
840
841
    if (showwaves->single_pic) {
842
        struct frame_node *f;
843
844
        ret = alloc_out_frame(showwaves, p, inlink, outlink, insamples);
845
        if (ret < 0)
846
            goto end;
847
848
        /* queue the audio frame */
849
        f = av_malloc(sizeof(*f));
850
        if (!f) {
851
            ret = AVERROR(ENOMEM);
852
            goto end;
853
        }
854
        f->frame = insamples;
855
        f->next = NULL;
856
        if (!showwaves->last_frame) {
857
            showwaves->audio_frames =
858
            showwaves->last_frame   = f;
859
        } else {
860
            showwaves->last_frame->next = f;
861
            showwaves->last_frame = f;
862
        }
863
        showwaves->total_samples += insamples->nb_samples;
864
865
        return 0;
866
    }
867
868
end:
869
    av_frame_free(&insamples);
870
    return ret;
871
}
872
873
static const AVFilterPad showwavespic_inputs[] = {
874
    {
875
        .name         = "default",
876
        .type         = AVMEDIA_TYPE_AUDIO,
877
        .config_props = showwavespic_config_input,
878
        .filter_frame = showwavespic_filter_frame,
879
    },
880
    { NULL }
881
};
882
883
static const AVFilterPad showwavespic_outputs[] = {
884
    {
885
        .name          = "default",
886
        .type          = AVMEDIA_TYPE_VIDEO,
887
        .config_props  = config_output,
888
        .request_frame = request_frame,
889
    },
890
    { NULL }
891
};
892
893
AVFilter ff_avf_showwavespic = {
894
    .name          = "showwavespic",
895
    .description   = NULL_IF_CONFIG_SMALL("Convert input audio to a video output single picture."),
896
    .init          = init,
897
    .uninit        = uninit,
898
    .query_formats = query_formats,
899
    .priv_size     = sizeof(ShowWavesContext),
900
    .inputs        = showwavespic_inputs,
901
    .outputs       = showwavespic_outputs,
902
    .priv_class    = &showwavespic_class,
903
};
904
905
#endif // CONFIG_SHOWWAVESPIC_FILTER