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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->outcfg.formats )) < 0 || |
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(layouts = ff_all_channel_counts()) == NULL || |
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(ret = ff_channel_layouts_ref (layouts, &inlink->outcfg.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->outcfg.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->incfg.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]; |
240 |
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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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} |
248 |
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break; |
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} |
250 |
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251 |
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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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257 |
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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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} |
260 |
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261 |
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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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266 |
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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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} |
273 |
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274 |
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for (n = 0; n < w; n++) { |
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double a, aa; |
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int h; |
277 |
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278 |
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a = achistogram[n] - shistogram[n]; |
279 |
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280 |
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switch (s->scale) { |
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case LINEAR: |
282 |
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aa = a / (double)acmax; |
283 |
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break; |
284 |
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case SQRT: |
285 |
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aa = sqrt(a) / sqrt(acmax); |
286 |
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break; |
287 |
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case CBRT: |
288 |
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aa = cbrt(a) / cbrt(acmax); |
289 |
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break; |
290 |
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case LOG: |
291 |
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aa = log2(a + 1) / log2(acmax + 1); |
292 |
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break; |
293 |
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case RLOG: |
294 |
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aa = 1. - log2(a + 1) / log2(acmax + 1); |
295 |
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if (aa == 1.) |
296 |
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aa = 0; |
297 |
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break; |
298 |
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default: |
299 |
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av_assert0(0); |
300 |
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} |
301 |
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302 |
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h = aa * (H - 1); |
303 |
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304 |
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if (s->dmode == SINGLE) { |
305 |
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306 |
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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; |
308 |
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s->out->data[3][y * s->out->linesize[0] + n] = 255; |
309 |
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} |
310 |
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311 |
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if (s->h - H > 0) { |
312 |
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h = aa * 255; |
313 |
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314 |
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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; |
317 |
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s->out->data[3][s->ypos * s->out->linesize[3] + n] = 255; |
318 |
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} |
319 |
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} else if (s->dmode == SEPARATE) { |
320 |
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float *out = &s->combine_buffer[3 * n]; |
321 |
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int old; |
322 |
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323 |
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old = s->out->data[0][(H - h) * s->out->linesize[0] + n]; |
324 |
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for (y = H - h; y < H; y++) { |
325 |
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if (s->out->data[0][y * s->out->linesize[0] + n] != old) |
326 |
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break; |
327 |
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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 |
|
|
}; |