438 lines
15 KiB
C
438 lines
15 KiB
C
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/*
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* Copyright (c) 2015 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/opt.h"
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#include "libavutil/parseutils.h"
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#include "avfilter.h"
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#include "filters.h"
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#include "formats.h"
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#include "audio.h"
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#include "video.h"
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#include "internal.h"
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enum DisplayScale { LINEAR, SQRT, CBRT, LOG, RLOG, NB_SCALES };
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enum AmplitudeScale { ALINEAR, ALOG, NB_ASCALES };
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enum SlideMode { REPLACE, SCROLL, NB_SLIDES };
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enum DisplayMode { SINGLE, SEPARATE, NB_DMODES };
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enum HistogramMode { ACCUMULATE, CURRENT, NB_HMODES };
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typedef struct AudioHistogramContext {
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const AVClass *class;
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AVFrame *out;
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int w, h;
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AVRational frame_rate;
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uint64_t *achistogram;
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uint64_t *shistogram;
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int ascale;
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int scale;
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float phisto;
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int histogram_h;
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int apos;
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int ypos;
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int slide;
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int dmode;
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int dchannels;
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int count;
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int frame_count;
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float *combine_buffer;
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AVFrame *in[101];
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int first;
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int nb_samples;
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} AudioHistogramContext;
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#define OFFSET(x) offsetof(AudioHistogramContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption ahistogram_options[] = {
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{ "dmode", "set method to display channels", OFFSET(dmode), AV_OPT_TYPE_INT, {.i64=SINGLE}, 0, NB_DMODES-1, FLAGS, "dmode" },
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{ "single", "all channels use single histogram", 0, AV_OPT_TYPE_CONST, {.i64=SINGLE}, 0, 0, FLAGS, "dmode" },
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{ "separate", "each channel have own histogram", 0, AV_OPT_TYPE_CONST, {.i64=SEPARATE}, 0, 0, FLAGS, "dmode" },
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{ "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
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{ "r", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
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{ "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, FLAGS },
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{ "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="hd720"}, 0, 0, FLAGS },
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{ "scale", "set display scale", OFFSET(scale), AV_OPT_TYPE_INT, {.i64=LOG}, LINEAR, NB_SCALES-1, FLAGS, "scale" },
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{ "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=LOG}, 0, 0, FLAGS, "scale" },
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{ "sqrt", "square root", 0, AV_OPT_TYPE_CONST, {.i64=SQRT}, 0, 0, FLAGS, "scale" },
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{ "cbrt", "cubic root", 0, AV_OPT_TYPE_CONST, {.i64=CBRT}, 0, 0, FLAGS, "scale" },
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{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=LINEAR}, 0, 0, FLAGS, "scale" },
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{ "rlog", "reverse logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=RLOG}, 0, 0, FLAGS, "scale" },
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{ "ascale", "set amplitude scale", OFFSET(ascale), AV_OPT_TYPE_INT, {.i64=ALOG}, LINEAR, NB_ASCALES-1, FLAGS, "ascale" },
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{ "log", "logarithmic", 0, AV_OPT_TYPE_CONST, {.i64=ALOG}, 0, 0, FLAGS, "ascale" },
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{ "lin", "linear", 0, AV_OPT_TYPE_CONST, {.i64=ALINEAR}, 0, 0, FLAGS, "ascale" },
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{ "acount", "how much frames to accumulate", OFFSET(count), AV_OPT_TYPE_INT, {.i64=1}, -1, 100, FLAGS },
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{ "rheight", "set histogram ratio of window height", OFFSET(phisto), AV_OPT_TYPE_FLOAT, {.dbl=0.10}, 0, 1, FLAGS },
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{ "slide", "set sonogram sliding", OFFSET(slide), AV_OPT_TYPE_INT, {.i64=REPLACE}, 0, NB_SLIDES-1, FLAGS, "slide" },
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{ "replace", "replace old rows with new", 0, AV_OPT_TYPE_CONST, {.i64=REPLACE}, 0, 0, FLAGS, "slide" },
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{ "scroll", "scroll from top to bottom", 0, AV_OPT_TYPE_CONST, {.i64=SCROLL}, 0, 0, FLAGS, "slide" },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(ahistogram);
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static int query_formats(AVFilterContext *ctx)
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{
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AVFilterFormats *formats = NULL;
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AVFilterChannelLayouts *layouts = NULL;
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AVFilterLink *inlink = ctx->inputs[0];
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AVFilterLink *outlink = ctx->outputs[0];
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static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_FLTP, AV_SAMPLE_FMT_NONE };
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static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE };
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int ret = AVERROR(EINVAL);
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formats = ff_make_format_list(sample_fmts);
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if ((ret = ff_formats_ref (formats, &inlink->out_formats )) < 0 ||
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(layouts = ff_all_channel_counts()) == NULL ||
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(ret = ff_channel_layouts_ref (layouts, &inlink->out_channel_layouts)) < 0)
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return ret;
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formats = ff_all_samplerates();
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if ((ret = ff_formats_ref(formats, &inlink->out_samplerates)) < 0)
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return ret;
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formats = ff_make_format_list(pix_fmts);
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if ((ret = ff_formats_ref(formats, &outlink->in_formats)) < 0)
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return ret;
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return 0;
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}
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static int config_input(AVFilterLink *inlink)
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{
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AVFilterContext *ctx = inlink->dst;
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AudioHistogramContext *s = ctx->priv;
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s->nb_samples = FFMAX(1, av_rescale(inlink->sample_rate, s->frame_rate.den, s->frame_rate.num));
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s->dchannels = s->dmode == SINGLE ? 1 : inlink->channels;
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s->shistogram = av_calloc(s->w, s->dchannels * sizeof(*s->shistogram));
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if (!s->shistogram)
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return AVERROR(ENOMEM);
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s->achistogram = av_calloc(s->w, s->dchannels * sizeof(*s->achistogram));
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if (!s->achistogram)
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return AVERROR(ENOMEM);
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return 0;
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}
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static int config_output(AVFilterLink *outlink)
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{
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AudioHistogramContext *s = outlink->src->priv;
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outlink->w = s->w;
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outlink->h = s->h;
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outlink->sample_aspect_ratio = (AVRational){1,1};
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outlink->frame_rate = s->frame_rate;
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s->histogram_h = s->h * s->phisto;
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s->ypos = s->h * s->phisto;
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if (s->dmode == SEPARATE) {
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s->combine_buffer = av_malloc_array(outlink->w * 3, sizeof(*s->combine_buffer));
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if (!s->combine_buffer)
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return AVERROR(ENOMEM);
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}
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return 0;
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *in)
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{
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AVFilterContext *ctx = inlink->dst;
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AVFilterLink *outlink = ctx->outputs[0];
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AudioHistogramContext *s = ctx->priv;
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const int H = s->histogram_h;
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const int w = s->w;
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int c, y, n, p, bin;
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uint64_t acmax = 1;
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AVFrame *clone;
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if (!s->out || s->out->width != outlink->w ||
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s->out->height != outlink->h) {
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av_frame_free(&s->out);
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s->out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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if (!s->out) {
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av_frame_free(&in);
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return AVERROR(ENOMEM);
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}
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for (n = H; n < s->h; n++) {
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memset(s->out->data[0] + n * s->out->linesize[0], 0, w);
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memset(s->out->data[1] + n * s->out->linesize[0], 127, w);
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memset(s->out->data[2] + n * s->out->linesize[0], 127, w);
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memset(s->out->data[3] + n * s->out->linesize[0], 0, w);
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}
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}
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if (s->dmode == SEPARATE) {
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for (y = 0; y < w; y++) {
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s->combine_buffer[3 * y ] = 0;
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s->combine_buffer[3 * y + 1] = 127.5;
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s->combine_buffer[3 * y + 2] = 127.5;
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}
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}
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for (n = 0; n < H; n++) {
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memset(s->out->data[0] + n * s->out->linesize[0], 0, w);
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memset(s->out->data[1] + n * s->out->linesize[0], 127, w);
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memset(s->out->data[2] + n * s->out->linesize[0], 127, w);
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memset(s->out->data[3] + n * s->out->linesize[0], 0, w);
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}
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s->out->pts = in->pts;
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s->first = s->frame_count;
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switch (s->ascale) {
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case ALINEAR:
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for (c = 0; c < inlink->channels; c++) {
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const float *src = (const float *)in->extended_data[c];
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uint64_t *achistogram = &s->achistogram[(s->dmode == SINGLE ? 0: c) * w];
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for (n = 0; n < in->nb_samples; n++) {
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bin = lrint(av_clipf(fabsf(src[n]), 0, 1) * (w - 1));
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achistogram[bin]++;
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}
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if (s->in[s->first] && s->count >= 0) {
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uint64_t *shistogram = &s->shistogram[(s->dmode == SINGLE ? 0: c) * w];
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const float *src2 = (const float *)s->in[s->first]->extended_data[c];
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for (n = 0; n < in->nb_samples; n++) {
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bin = lrint(av_clipf(fabsf(src2[n]), 0, 1) * (w - 1));
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shistogram[bin]++;
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}
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}
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}
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break;
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case ALOG:
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for (c = 0; c < inlink->channels; c++) {
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const float *src = (const float *)in->extended_data[c];
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uint64_t *achistogram = &s->achistogram[(s->dmode == SINGLE ? 0: c) * w];
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for (n = 0; n < in->nb_samples; n++) {
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bin = lrint(av_clipf(1 + log10(fabsf(src[n])) / 6, 0, 1) * (w - 1));
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achistogram[bin]++;
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}
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if (s->in[s->first] && s->count >= 0) {
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uint64_t *shistogram = &s->shistogram[(s->dmode == SINGLE ? 0: c) * w];
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const float *src2 = (const float *)s->in[s->first]->extended_data[c];
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for (n = 0; n < in->nb_samples; n++) {
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bin = lrint(av_clipf(1 + log10(fabsf(src2[n])) / 6, 0, 1) * (w - 1));
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shistogram[bin]++;
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}
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}
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}
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break;
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}
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av_frame_free(&s->in[s->frame_count]);
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s->in[s->frame_count] = in;
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s->frame_count++;
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if (s->frame_count > s->count)
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s->frame_count = 0;
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for (n = 0; n < w * s->dchannels; n++) {
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acmax = FFMAX(s->achistogram[n] - s->shistogram[n], acmax);
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}
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for (c = 0; c < s->dchannels; c++) {
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uint64_t *shistogram = &s->shistogram[c * w];
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uint64_t *achistogram = &s->achistogram[c * w];
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float yf, uf, vf;
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if (s->dmode == SEPARATE) {
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yf = 256.0f / s->dchannels;
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uf = yf * M_PI;
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vf = yf * M_PI;
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uf *= 0.5 * sin((2 * M_PI * c) / s->dchannels);
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vf *= 0.5 * cos((2 * M_PI * c) / s->dchannels);
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}
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for (n = 0; n < w; n++) {
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double a, aa;
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int h;
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a = achistogram[n] - shistogram[n];
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switch (s->scale) {
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case LINEAR:
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aa = a / (double)acmax;
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break;
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case SQRT:
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aa = sqrt(a) / sqrt(acmax);
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break;
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case CBRT:
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aa = cbrt(a) / cbrt(acmax);
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break;
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case LOG:
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aa = log2(a + 1) / log2(acmax + 1);
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break;
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case RLOG:
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aa = 1. - log2(a + 1) / log2(acmax + 1);
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if (aa == 1.)
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aa = 0;
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break;
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default:
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av_assert0(0);
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}
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h = aa * (H - 1);
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if (s->dmode == SINGLE) {
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for (y = H - h; y < H; y++) {
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s->out->data[0][y * s->out->linesize[0] + n] = 255;
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s->out->data[3][y * s->out->linesize[0] + n] = 255;
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}
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if (s->h - H > 0) {
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h = aa * 255;
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s->out->data[0][s->ypos * s->out->linesize[0] + n] = h;
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s->out->data[1][s->ypos * s->out->linesize[1] + n] = 127;
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s->out->data[2][s->ypos * s->out->linesize[2] + n] = 127;
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s->out->data[3][s->ypos * s->out->linesize[3] + n] = 255;
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}
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} 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,
|
||
|
|
};
|