FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavfilter/avf_ahistogram.c	Lines:	0	207	0.0 %
Date:	2021-04-14 23:45:22	Branches:	0	127	0.0 %


/*
 * Copyright (c) 2015 Paul B Mahol
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "libavutil/avassert.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "avfilter.h"
#include "filters.h"
#include "formats.h"
#include "audio.h"
#include "video.h"
#include "internal.h"

enum DisplayScale   { LINEAR, SQRT, CBRT, LOG, RLOG, NB_SCALES };
enum AmplitudeScale { ALINEAR, ALOG, NB_ASCALES };
enum SlideMode      { REPLACE, SCROLL, NB_SLIDES };
enum DisplayMode    { SINGLE, SEPARATE, NB_DMODES };
enum HistogramMode  { ACCUMULATE, CURRENT, NB_HMODES };

typedef struct AudioHistogramContext {
    const AVClass *class;
    AVFrame *out;
    int w, h;
    AVRational frame_rate;
    uint64_t *achistogram;
    uint64_t *shistogram;
    int ascale;
    int scale;
    float phisto;
    int histogram_h;
    int apos;
    int ypos;
    int slide;
    int dmode;
    int dchannels;
    int count;
    int frame_count;
    float *combine_buffer;
    AVFrame *in[101];
    int first;
    int nb_samples;
} AudioHistogramContext;

#define OFFSET(x) offsetof(AudioHistogramContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

static const AVOption ahistogram_options[] = {
    { "dmode", "set method to display channels", OFFSET(dmode), AV_OPT_TYPE_INT, {.i64=SINGLE}, 0, NB_DMODES-1, FLAGS, "dmode" },
        { "single", "all channels use single histogram", 0, AV_OPT_TYPE_CONST, {.i64=SINGLE},   0, 0, FLAGS, "dmode" },
        { "separate", "each channel have own histogram", 0, AV_OPT_TYPE_CONST, {.i64=SEPARATE}, 0, 0, FLAGS, "dmode" },
    { "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
    { "r",    "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
    { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, FLAGS },
    { "s",    "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, FLAGS },
    { "scale", "set display scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64=LOG}, LINEAR, NB_SCALES-1, FLAGS, "scale" },
        { "log",  "logarithmic",         0, AV_OPT_TYPE_CONST, {.i64=LOG},    0, 0, FLAGS, "scale" },
        { "sqrt", "square root",         0, AV_OPT_TYPE_CONST, {.i64=SQRT},   0, 0, FLAGS, "scale" },
        { "cbrt", "cubic root",          0, AV_OPT_TYPE_CONST, {.i64=CBRT},   0, 0, FLAGS, "scale" },
        { "lin",  "linear",              0, AV_OPT_TYPE_CONST, {.i64=LINEAR}, 0, 0, FLAGS, "scale" },
        { "rlog", "reverse logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=RLOG},   0, 0, FLAGS, "scale" },
    { "ascale", "set amplitude scale", OFFSET(ascale), AV_OPT_TYPE_INT, {.i64=ALOG}, LINEAR, NB_ASCALES-1, FLAGS, "ascale" },
        { "log",  "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=ALOG},    0, 0, FLAGS, "ascale" },
        { "lin",  "linear",      0, AV_OPT_TYPE_CONST, {.i64=ALINEAR}, 0, 0, FLAGS, "ascale" },
    { "acount", "how much frames to accumulate", OFFSET(count), AV_OPT_TYPE_INT, {.i64=1}, -1, 100, FLAGS },
    { "rheight", "set histogram ratio of window height", OFFSET(phisto), AV_OPT_TYPE_FLOAT, {.dbl=0.10}, 0, 1, FLAGS },
    { "slide", "set sonogram sliding", OFFSET(slide), AV_OPT_TYPE_INT, {.i64=REPLACE}, 0, NB_SLIDES-1, FLAGS, "slide" },
        { "replace", "replace old rows with new", 0, AV_OPT_TYPE_CONST, {.i64=REPLACE},    0, 0, FLAGS, "slide" },
        { "scroll",  "scroll from top to bottom", 0, AV_OPT_TYPE_CONST, {.i64=SCROLL}, 0, 0, FLAGS, "slide" },
    { NULL }
};

AVFILTER_DEFINE_CLASS(ahistogram);

static int query_formats(AVFilterContext *ctx)
{
    AVFilterFormats *formats = NULL;
    AVFilterChannelLayouts *layouts = NULL;
    AVFilterLink *inlink = ctx->inputs[0];
    AVFilterLink *outlink = ctx->outputs[0];
    static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_NONE };
    static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE };
    int ret = AVERROR(EINVAL);

    formats = ff_make_format_list(sample_fmts);
    if ((ret = ff_formats_ref         (formats, &inlink->outcfg.formats        )) < 0 ||
        (layouts = ff_all_channel_counts()) == NULL ||
        (ret = ff_channel_layouts_ref (layouts, &inlink->outcfg.channel_layouts)) < 0)
        return ret;

    formats = ff_all_samplerates();
    if ((ret = ff_formats_ref(formats, &inlink->outcfg.samplerates)) < 0)
        return ret;

    formats = ff_make_format_list(pix_fmts);
    if ((ret = ff_formats_ref(formats, &outlink->incfg.formats)) < 0)
        return ret;

    return 0;
}

static int config_input(AVFilterLink *inlink)
{
    AVFilterContext *ctx = inlink->dst;
    AudioHistogramContext *s = ctx->priv;

    s->nb_samples = FFMAX(1, av_rescale(inlink->sample_rate, s->frame_rate.den, s->frame_rate.num));
    s->dchannels = s->dmode == SINGLE ? 1 : inlink->channels;
    s->shistogram = av_calloc(s->w, s->dchannels * sizeof(*s->shistogram));
    if (!s->shistogram)
        return AVERROR(ENOMEM);

    s->achistogram = av_calloc(s->w, s->dchannels * sizeof(*s->achistogram));
    if (!s->achistogram)
        return AVERROR(ENOMEM);

    return 0;
}

static int config_output(AVFilterLink *outlink)
{
    AudioHistogramContext *s = outlink->src->priv;

    outlink->w = s->w;
    outlink->h = s->h;
    outlink->sample_aspect_ratio = (AVRational){1,1};
    outlink->frame_rate = s->frame_rate;

    s->histogram_h = s->h * s->phisto;
    s->ypos = s->h * s->phisto;

    if (s->dmode == SEPARATE) {
        s->combine_buffer = av_malloc_array(outlink->w * 3, sizeof(*s->combine_buffer));
        if (!s->combine_buffer)
            return AVERROR(ENOMEM);
    }

    return 0;
}

static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
    AVFilterContext *ctx = inlink->dst;
    AVFilterLink *outlink = ctx->outputs[0];
    AudioHistogramContext *s = ctx->priv;
    const int H = s->histogram_h;
    const int w = s->w;
    int c, y, n, p, bin;
    uint64_t acmax = 1;
    AVFrame *clone;

    if (!s->out || s->out->width  != outlink->w ||
                   s->out->height != outlink->h) {
        av_frame_free(&s->out);
        s->out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
        if (!s->out) {
            av_frame_free(&in);
            return AVERROR(ENOMEM);
        }
        for (n = H; n < s->h; n++) {
            memset(s->out->data[0] + n * s->out->linesize[0], 0, w);
            memset(s->out->data[1] + n * s->out->linesize[0], 127, w);
            memset(s->out->data[2] + n * s->out->linesize[0], 127, w);
            memset(s->out->data[3] + n * s->out->linesize[0], 0, w);
        }
    }

    if (s->dmode == SEPARATE) {
        for (y = 0; y < w; y++) {
            s->combine_buffer[3 * y    ] = 0;
            s->combine_buffer[3 * y + 1] = 127.5;
            s->combine_buffer[3 * y + 2] = 127.5;
        }
    }

    for (n = 0; n < H; n++) {
        memset(s->out->data[0] + n * s->out->linesize[0], 0, w);
        memset(s->out->data[1] + n * s->out->linesize[0], 127, w);
        memset(s->out->data[2] + n * s->out->linesize[0], 127, w);
        memset(s->out->data[3] + n * s->out->linesize[0], 0, w);
    }
    s->out->pts = in->pts;

    s->first = s->frame_count;

    switch (s->ascale) {
    case ALINEAR:
        for (c = 0; c < inlink->channels; c++) {
            const float *src = (const float *)in->extended_data[c];
            uint64_t *achistogram = &s->achistogram[(s->dmode == SINGLE ? 0: c) * w];

            for (n = 0; n < in->nb_samples; n++) {
                bin = lrint(av_clipf(fabsf(src[n]), 0, 1) * (w - 1));

                achistogram[bin]++;
            }

            if (s->in[s->first] && s->count >= 0) {
                uint64_t *shistogram = &s->shistogram[(s->dmode == SINGLE ? 0: c) * w];
                const float *src2 = (const float *)s->in[s->first]->extended_data[c];

                for (n = 0; n < in->nb_samples; n++) {
                    bin = lrint(av_clipf(fabsf(src2[n]), 0, 1) * (w - 1));

                    shistogram[bin]++;
                }
            }
        }
        break;
    case ALOG:
        for (c = 0; c < inlink->channels; c++) {
            const float *src = (const float *)in->extended_data[c];
            uint64_t *achistogram = &s->achistogram[(s->dmode == SINGLE ? 0: c) * w];

            for (n = 0; n < in->nb_samples; n++) {
                bin = lrint(av_clipf(1 + log10(fabsf(src[n])) / 6, 0, 1) * (w - 1));

                achistogram[bin]++;
            }

            if (s->in[s->first] && s->count >= 0) {
                uint64_t *shistogram = &s->shistogram[(s->dmode == SINGLE ? 0: c) * w];
                const float *src2 = (const float *)s->in[s->first]->extended_data[c];

                for (n = 0; n < in->nb_samples; n++) {
                    bin = lrint(av_clipf(1 + log10(fabsf(src2[n])) / 6, 0, 1) * (w - 1));

                    shistogram[bin]++;
                }
            }
        }
        break;
    }

    av_frame_free(&s->in[s->frame_count]);
    s->in[s->frame_count] = in;
    s->frame_count++;
    if (s->frame_count > s->count)
        s->frame_count = 0;

    for (n = 0; n < w * s->dchannels; n++) {
        acmax = FFMAX(s->achistogram[n] - s->shistogram[n], acmax);
    }

    for (c = 0; c < s->dchannels; c++) {
        uint64_t *shistogram  = &s->shistogram[c * w];
        uint64_t *achistogram = &s->achistogram[c * w];
        float yf, uf, vf;

        if (s->dmode == SEPARATE) {
            yf = 256.0f / s->dchannels;
            uf = yf * M_PI;
            vf = yf * M_PI;
            uf *= 0.5 * sin((2 * M_PI * c) / s->dchannels);
            vf *= 0.5 * cos((2 * M_PI * c) / s->dchannels);
        }

        for (n = 0; n < w; n++) {
            double a, aa;
            int h;

            a = achistogram[n] - shistogram[n];

            switch (s->scale) {
            case LINEAR:
                aa = a / (double)acmax;
                break;
            case SQRT:
                aa = sqrt(a) / sqrt(acmax);
                break;
            case CBRT:
                aa = cbrt(a) / cbrt(acmax);
                break;
            case LOG:
                aa = log2(a + 1) / log2(acmax + 1);
                break;
            case RLOG:
                aa = 1. - log2(a + 1) / log2(acmax + 1);
                if (aa == 1.)
                    aa = 0;
                break;
            default:
                av_assert0(0);
            }

            h = aa * (H - 1);

            if (s->dmode == SINGLE) {

                for (y = H - h; y < H; y++) {
                    s->out->data[0][y * s->out->linesize[0] + n] = 255;
                    s->out->data[3][y * s->out->linesize[0] + n] = 255;
                }

                if (s->h - H > 0) {
                    h = aa * 255;

                    s->out->data[0][s->ypos * s->out->linesize[0] + n] = h;
                    s->out->data[1][s->ypos * s->out->linesize[1] + n] = 127;
                    s->out->data[2][s->ypos * s->out->linesize[2] + n] = 127;
                    s->out->data[3][s->ypos * s->out->linesize[3] + n] = 255;
                }
            } else if (s->dmode == SEPARATE) {
                float *out = &s->combine_buffer[3 * n];
                int old;

                old = s->out->data[0][(H - h) * s->out->linesize[0] + n];
                for (y = H - h; y < H; y++) {
                    if (s->out->data[0][y * s->out->linesize[0] + n] != old)
                        break;
                    old = s->out->data[0][y * s->out->linesize[0] + n];
                    s->out->data[0][y * s->out->linesize[0] + n] = yf;
                    s->out->data[1][y * s->out->linesize[1] + n] = 128+uf;
                    s->out->data[2][y * s->out->linesize[2] + n] = 128+vf;
                    s->out->data[3][y * s->out->linesize[3] + n] = 255;
                }

                out[0] += aa * yf;
                out[1] += aa * uf;
                out[2] += aa * vf;
            }
        }
    }

    if (s->h - H > 0) {
        if (s->dmode == SEPARATE) {
            for (n = 0; n < w; n++) {
                float *cb = &s->combine_buffer[3 * n];

                s->out->data[0][s->ypos * s->out->linesize[0] + n] = cb[0];
                s->out->data[1][s->ypos * s->out->linesize[1] + n] = cb[1];
                s->out->data[2][s->ypos * s->out->linesize[2] + n] = cb[2];
                s->out->data[3][s->ypos * s->out->linesize[3] + n] = 255;
            }
        }

        if (s->slide == SCROLL) {
            for (p = 0; p < 4; p++) {
                for (y = s->h; y >= H + 1; y--) {
                    memmove(s->out->data[p] + (y  ) * s->out->linesize[p],
                            s->out->data[p] + (y-1) * s->out->linesize[p], w);
                }
            }
        }

        s->ypos++;
        if (s->slide == SCROLL || s->ypos >= s->h)
            s->ypos = H;
    }

    clone = av_frame_clone(s->out);
    if (!clone)
        return AVERROR(ENOMEM);

    return ff_filter_frame(outlink, clone);
}

static int activate(AVFilterContext *ctx)
{
    AVFilterLink *inlink = ctx->inputs[0];
    AVFilterLink *outlink = ctx->outputs[0];
    AudioHistogramContext *s = ctx->priv;
    AVFrame *in;
    int ret;

    FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);

    ret = ff_inlink_consume_samples(inlink, s->nb_samples, s->nb_samples, &in);
    if (ret < 0)
        return ret;
    if (ret > 0)
        return filter_frame(inlink, in);

    FF_FILTER_FORWARD_STATUS(inlink, outlink);
    FF_FILTER_FORWARD_WANTED(outlink, inlink);

    return FFERROR_NOT_READY;
}

static av_cold void uninit(AVFilterContext *ctx)
{
    AudioHistogramContext *s = ctx->priv;
    int i;

    av_frame_free(&s->out);
    av_freep(&s->shistogram);
    av_freep(&s->achistogram);
    av_freep(&s->combine_buffer);
    for (i = 0; i < 101; i++)
        av_frame_free(&s->in[i]);
}

static const AVFilterPad ahistogram_inputs[] = {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_AUDIO,
        .config_props = config_input,
    },
    { NULL }
};

static const AVFilterPad ahistogram_outputs[] = {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = config_output,
    },
    { NULL }
};

AVFilter ff_avf_ahistogram = {
    .name          = "ahistogram",
    .description   = NULL_IF_CONFIG_SMALL("Convert input audio to histogram video output."),
    .uninit        = uninit,
    .query_formats = query_formats,
    .priv_size     = sizeof(AudioHistogramContext),
    .activate      = activate,
    .inputs        = ahistogram_inputs,
    .outputs       = ahistogram_outputs,
    .priv_class    = &ahistogram_class,
};


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 2015 Paul B Mahol
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			#include "libavutil/avassert.h"
22			#include "libavutil/opt.h"
23			#include "libavutil/parseutils.h"
24			#include "avfilter.h"
25			#include "filters.h"
26			#include "formats.h"
27			#include "audio.h"
28			#include "video.h"
29			#include "internal.h"
30
31			enum DisplayScale { LINEAR, SQRT, CBRT, LOG, RLOG, NB_SCALES };
32			enum AmplitudeScale { ALINEAR, ALOG, NB_ASCALES };
33			enum SlideMode { REPLACE, SCROLL, NB_SLIDES };
34			enum DisplayMode { SINGLE, SEPARATE, NB_DMODES };
35			enum HistogramMode { ACCUMULATE, CURRENT, NB_HMODES };
36
37			typedef struct AudioHistogramContext {
38			const AVClass *class;
39			AVFrame *out;
40			int w, h;
41			AVRational frame_rate;
42			uint64_t *achistogram;
43			uint64_t *shistogram;
44			int ascale;
45			int scale;
46			float phisto;
47			int histogram_h;
48			int apos;
49			int ypos;
50			int slide;
51			int dmode;
52			int dchannels;
53			int count;
54			int frame_count;
55			float *combine_buffer;
56			AVFrame *in[101];
57			int first;
58			int nb_samples;
59			} AudioHistogramContext;
60
61			#define OFFSET(x) offsetof(AudioHistogramContext, x)
62			#define FLAGS AV_OPT_FLAG_FILTERING_PARAM\|AV_OPT_FLAG_VIDEO_PARAM
63
64			static const AVOption ahistogram_options[] = {
65			{ "dmode", "set method to display channels", OFFSET(dmode), AV_OPT_TYPE_INT, {.i64=SINGLE}, 0, NB_DMODES-1, FLAGS, "dmode" },
66			{ "single", "all channels use single histogram", 0, AV_OPT_TYPE_CONST, {.i64=SINGLE}, 0, 0, FLAGS, "dmode" },
67			{ "separate", "each channel have own histogram", 0, AV_OPT_TYPE_CONST, {.i64=SEPARATE}, 0, 0, FLAGS, "dmode" },
68			{ "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
69			{ "r", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
70			{ "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, FLAGS },
71			{ "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, FLAGS },
72			{ "scale", "set display scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64=LOG}, LINEAR, NB_SCALES-1, FLAGS, "scale" },
73			{ "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=LOG}, 0, 0, FLAGS, "scale" },
74			{ "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SQRT}, 0, 0, FLAGS, "scale" },
75			{ "cbrt", "cubic root", 0, AV_OPT_TYPE_CONST, {.i64=CBRT}, 0, 0, FLAGS, "scale" },
76			{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=LINEAR}, 0, 0, FLAGS, "scale" },
77			{ "rlog", "reverse logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=RLOG}, 0, 0, FLAGS, "scale" },
78			{ "ascale", "set amplitude scale", OFFSET(ascale), AV_OPT_TYPE_INT, {.i64=ALOG}, LINEAR, NB_ASCALES-1, FLAGS, "ascale" },
79			{ "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=ALOG}, 0, 0, FLAGS, "ascale" },
80			{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=ALINEAR}, 0, 0, FLAGS, "ascale" },
81			{ "acount", "how much frames to accumulate", OFFSET(count), AV_OPT_TYPE_INT, {.i64=1}, -1, 100, FLAGS },
82			{ "rheight", "set histogram ratio of window height", OFFSET(phisto), AV_OPT_TYPE_FLOAT, {.dbl=0.10}, 0, 1, FLAGS },
83			{ "slide", "set sonogram sliding", OFFSET(slide), AV_OPT_TYPE_INT, {.i64=REPLACE}, 0, NB_SLIDES-1, FLAGS, "slide" },
84			{ "replace", "replace old rows with new", 0, AV_OPT_TYPE_CONST, {.i64=REPLACE}, 0, 0, FLAGS, "slide" },
85			{ "scroll", "scroll from top to bottom", 0, AV_OPT_TYPE_CONST, {.i64=SCROLL}, 0, 0, FLAGS, "slide" },
86			{ NULL }
87			};
88
89			AVFILTER_DEFINE_CLASS(ahistogram);
90
91			static int query_formats(AVFilterContext *ctx)
92			{
93			AVFilterFormats *formats = NULL;
94			AVFilterChannelLayouts *layouts = NULL;
95			AVFilterLink *inlink = ctx->inputs[0];
96			AVFilterLink *outlink = ctx->outputs[0];
97			static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_NONE };
98			static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE };
99			int ret = AVERROR(EINVAL);
100
101			formats = ff_make_format_list(sample_fmts);
102			if ((ret = ff_formats_ref (formats, &inlink->outcfg.formats )) < 0 \|\|
103			(layouts = ff_all_channel_counts()) == NULL \|\|
104			(ret = ff_channel_layouts_ref (layouts, &inlink->outcfg.channel_layouts)) < 0)
105			return ret;
106
107			formats = ff_all_samplerates();
108			if ((ret = ff_formats_ref(formats, &inlink->outcfg.samplerates)) < 0)
109			return ret;
110
111			formats = ff_make_format_list(pix_fmts);
112			if ((ret = ff_formats_ref(formats, &outlink->incfg.formats)) < 0)
113			return ret;
114
115			return 0;
116			}
117
118			static int config_input(AVFilterLink *inlink)
119			{
120			AVFilterContext *ctx = inlink->dst;
121			AudioHistogramContext *s = ctx->priv;
122
123			s->nb_samples = FFMAX(1, av_rescale(inlink->sample_rate, s->frame_rate.den, s->frame_rate.num));
124			s->dchannels = s->dmode == SINGLE ? 1 : inlink->channels;
125			s->shistogram = av_calloc(s->w, s->dchannels * sizeof(*s->shistogram));
126			if (!s->shistogram)
127			return AVERROR(ENOMEM);
128
129			s->achistogram = av_calloc(s->w, s->dchannels * sizeof(*s->achistogram));
130			if (!s->achistogram)
131			return AVERROR(ENOMEM);
132
133			return 0;
134			}
135
136			static int config_output(AVFilterLink *outlink)
137			{
138			AudioHistogramContext *s = outlink->src->priv;
139
140			outlink->w = s->w;
141			outlink->h = s->h;
142			outlink->sample_aspect_ratio = (AVRational){1,1};
143			outlink->frame_rate = s->frame_rate;
144
145			s->histogram_h = s->h * s->phisto;
146			s->ypos = s->h * s->phisto;
147
148			if (s->dmode == SEPARATE) {
149			s->combine_buffer = av_malloc_array(outlink->w * 3, sizeof(*s->combine_buffer));
150			if (!s->combine_buffer)
151			return AVERROR(ENOMEM);
152			}
153
154			return 0;
155			}
156
157			static int filter_frame(AVFilterLink inlink, AVFrame in)
158			{
159			AVFilterContext *ctx = inlink->dst;
160			AVFilterLink *outlink = ctx->outputs[0];
161			AudioHistogramContext *s = ctx->priv;
162			const int H = s->histogram_h;
163			const int w = s->w;
164			int c, y, n, p, bin;
165			uint64_t acmax = 1;
166			AVFrame *clone;
167
168			if (!s->out \|\| s->out->width != outlink->w \|\|
169			s->out->height != outlink->h) {
170			av_frame_free(&s->out);
171			s->out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
172			if (!s->out) {
173			av_frame_free(&in);
174			return AVERROR(ENOMEM);
175			}
176			for (n = H; n < s->h; n++) {
177			memset(s->out->data[0] + n * s->out->linesize[0], 0, w);
178			memset(s->out->data[1] + n * s->out->linesize[0], 127, w);
179			memset(s->out->data[2] + n * s->out->linesize[0], 127, w);
180			memset(s->out->data[3] + n * s->out->linesize[0], 0, w);
181			}
182			}
183
184			if (s->dmode == SEPARATE) {
185			for (y = 0; y < w; y++) {
186			s->combine_buffer[3 * y ] = 0;
187			s->combine_buffer[3 * y + 1] = 127.5;
188			s->combine_buffer[3 * y + 2] = 127.5;
189			}
190			}
191
192			for (n = 0; n < H; n++) {
193			memset(s->out->data[0] + n * s->out->linesize[0], 0, w);
194			memset(s->out->data[1] + n * s->out->linesize[0], 127, w);
195			memset(s->out->data[2] + n * s->out->linesize[0], 127, w);
196			memset(s->out->data[3] + n * s->out->linesize[0], 0, w);
197			}
198			s->out->pts = in->pts;
199
200			s->first = s->frame_count;
201
202			switch (s->ascale) {
203			case ALINEAR:
204			for (c = 0; c < inlink->channels; c++) {
205			const float src = (const float )in->extended_data[c];
206			uint64_t achistogram = &s->achistogram[(s->dmode == SINGLE ? 0: c) w];
207
208			for (n = 0; n < in->nb_samples; n++) {
209			bin = lrint(av_clipf(fabsf(src[n]), 0, 1) * (w - 1));
210
211			achistogram[bin]++;
212			}
213
214			if (s->in[s->first] && s->count >= 0) {
215			uint64_t shistogram = &s->shistogram[(s->dmode == SINGLE ? 0: c) w];
216			const float src2 = (const float )s->in[s->first]->extended_data[c];
217
218			for (n = 0; n < in->nb_samples; n++) {
219			bin = lrint(av_clipf(fabsf(src2[n]), 0, 1) * (w - 1));
220
221			shistogram[bin]++;
222			}
223			}
224			}
225			break;
226			case ALOG:
227			for (c = 0; c < inlink->channels; c++) {
228			const float src = (const float )in->extended_data[c];
229			uint64_t achistogram = &s->achistogram[(s->dmode == SINGLE ? 0: c) w];
230
231			for (n = 0; n < in->nb_samples; n++) {
232			bin = lrint(av_clipf(1 + log10(fabsf(src[n])) / 6, 0, 1) * (w - 1));
233
234			achistogram[bin]++;
235			}
236
237			if (s->in[s->first] && s->count >= 0) {
238			uint64_t shistogram = &s->shistogram[(s->dmode == SINGLE ? 0: c) w];
239			const float src2 = (const float )s->in[s->first]->extended_data[c];
240
241			for (n = 0; n < in->nb_samples; n++) {
242			bin = lrint(av_clipf(1 + log10(fabsf(src2[n])) / 6, 0, 1) * (w - 1));
243
244			shistogram[bin]++;
245			}
246			}
247			}
248			break;
249			}
250
251			av_frame_free(&s->in[s->frame_count]);
252			s->in[s->frame_count] = in;
253			s->frame_count++;
254			if (s->frame_count > s->count)
255			s->frame_count = 0;
256
257			for (n = 0; n < w * s->dchannels; n++) {
258			acmax = FFMAX(s->achistogram[n] - s->shistogram[n], acmax);
259			}
260
261			for (c = 0; c < s->dchannels; c++) {
262			uint64_t shistogram = &s->shistogram[c w];
263			uint64_t achistogram = &s->achistogram[c w];
264			float yf, uf, vf;
265
266			if (s->dmode == SEPARATE) {
267			yf = 256.0f / s->dchannels;
268			uf = yf * M_PI;
269			vf = yf * M_PI;
270			uf = 0.5 sin((2 * M_PI * c) / s->dchannels);
271			vf = 0.5 cos((2 * M_PI * c) / s->dchannels);
272			}
273
274			for (n = 0; n < w; n++) {
275			double a, aa;
276			int h;
277
278			a = achistogram[n] - shistogram[n];
279
280			switch (s->scale) {
281			case LINEAR:
282			aa = a / (double)acmax;
283			break;
284			case SQRT:
285			aa = sqrt(a) / sqrt(acmax);
286			break;
287			case CBRT:
288			aa = cbrt(a) / cbrt(acmax);
289			break;
290			case LOG:
291			aa = log2(a + 1) / log2(acmax + 1);
292			break;
293			case RLOG:
294			aa = 1. - log2(a + 1) / log2(acmax + 1);
295			if (aa == 1.)
296			aa = 0;
297			break;
298			default:
299			av_assert0(0);
300			}
301
302			h = aa * (H - 1);
303
304			if (s->dmode == SINGLE) {
305
306			for (y = H - h; y < H; y++) {
307			s->out->data[0][y * s->out->linesize[0] + n] = 255;
308			s->out->data[3][y * s->out->linesize[0] + n] = 255;
309			}
310
311			if (s->h - H > 0) {
312			h = aa * 255;
313
314			s->out->data[0][s->ypos * s->out->linesize[0] + n] = h;
315			s->out->data[1][s->ypos * s->out->linesize[1] + n] = 127;
316			s->out->data[2][s->ypos * s->out->linesize[2] + n] = 127;
317			s->out->data[3][s->ypos * s->out->linesize[3] + n] = 255;
318			}
319			} else if (s->dmode == SEPARATE) {
320			float out = &s->combine_buffer[3 n];
321			int old;
322
323			old = s->out->data[0][(H - h) * s->out->linesize[0] + n];
324			for (y = H - h; y < H; y++) {
325			if (s->out->data[0][y * s->out->linesize[0] + n] != old)
326			break;
327			old = s->out->data[0][y * s->out->linesize[0] + n];
328			s->out->data[0][y * s->out->linesize[0] + n] = yf;
329			s->out->data[1][y * s->out->linesize[1] + n] = 128+uf;
330			s->out->data[2][y * s->out->linesize[2] + n] = 128+vf;
331			s->out->data[3][y * s->out->linesize[3] + n] = 255;
332			}
333
334			out[0] += aa * yf;
335			out[1] += aa * uf;
336			out[2] += aa * vf;
337			}
338			}
339			}
340
341			if (s->h - H > 0) {
342			if (s->dmode == SEPARATE) {
343			for (n = 0; n < w; n++) {
344			float cb = &s->combine_buffer[3 n];
345
346			s->out->data[0][s->ypos * s->out->linesize[0] + n] = cb[0];
347			s->out->data[1][s->ypos * s->out->linesize[1] + n] = cb[1];
348			s->out->data[2][s->ypos * s->out->linesize[2] + n] = cb[2];
349			s->out->data[3][s->ypos * s->out->linesize[3] + n] = 255;
350			}
351			}
352
353			if (s->slide == SCROLL) {
354			for (p = 0; p < 4; p++) {
355			for (y = s->h; y >= H + 1; y--) {
356			memmove(s->out->data[p] + (y ) * s->out->linesize[p],
357			s->out->data[p] + (y-1) * s->out->linesize[p], w);
358			}
359			}
360			}
361
362			s->ypos++;
363			if (s->slide == SCROLL \|\| s->ypos >= s->h)
364			s->ypos = H;
365			}
366
367			clone = av_frame_clone(s->out);
368			if (!clone)
369			return AVERROR(ENOMEM);
370
371			return ff_filter_frame(outlink, clone);
372			}
373
374			static int activate(AVFilterContext *ctx)
375			{
376			AVFilterLink *inlink = ctx->inputs[0];
377			AVFilterLink *outlink = ctx->outputs[0];
378			AudioHistogramContext *s = ctx->priv;
379			AVFrame *in;
380			int ret;
381
382			FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
383
384			ret = ff_inlink_consume_samples(inlink, s->nb_samples, s->nb_samples, &in);
385			if (ret < 0)
386			return ret;
387			if (ret > 0)
388			return filter_frame(inlink, in);
389
390			FF_FILTER_FORWARD_STATUS(inlink, outlink);
391			FF_FILTER_FORWARD_WANTED(outlink, inlink);
392
393			return FFERROR_NOT_READY;
394			}
395
396			static av_cold void uninit(AVFilterContext *ctx)
397			{
398			AudioHistogramContext *s = ctx->priv;
399			int i;
400
401			av_frame_free(&s->out);
402			av_freep(&s->shistogram);
403			av_freep(&s->achistogram);
404			av_freep(&s->combine_buffer);
405			for (i = 0; i < 101; i++)
406			av_frame_free(&s->in[i]);
407			}
408
409			static const AVFilterPad ahistogram_inputs[] = {
410			{
411			.name = "default",
412			.type = AVMEDIA_TYPE_AUDIO,
413			.config_props = config_input,
414			},
415			{ NULL }
416			};
417
418			static const AVFilterPad ahistogram_outputs[] = {
419			{
420			.name = "default",
421			.type = AVMEDIA_TYPE_VIDEO,
422			.config_props = config_output,
423			},
424			{ NULL }
425			};
426
427			AVFilter ff_avf_ahistogram = {
428			.name = "ahistogram",
429			.description = NULL_IF_CONFIG_SMALL("Convert input audio to histogram video output."),
430			.uninit = uninit,
431			.query_formats = query_formats,
432			.priv_size = sizeof(AudioHistogramContext),
433			.activate = activate,
434			.inputs = ahistogram_inputs,
435			.outputs = ahistogram_outputs,
436			.priv_class = &ahistogram_class,
437			};