GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavfilter/avf_abitscope.c Lines: 0 114 0.0 %
Date: 2020-08-14 10:39:37 Branches: 0 63 0.0 %

Line Branch Exec Source
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/*
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 * Copyright (c) 2016 Paul B Mahol
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include "libavutil/avassert.h"
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#include "libavutil/avstring.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/opt.h"
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#include "libavutil/parseutils.h"
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#include "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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typedef struct AudioBitScopeContext {
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    const AVClass *class;
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    int w, h;
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    AVRational frame_rate;
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    char *colors;
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    int nb_channels;
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    int nb_samples;
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    int depth;
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    uint8_t *fg;
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    uint64_t counter[64];
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} AudioBitScopeContext;
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#define OFFSET(x) offsetof(AudioBitScopeContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption abitscope_options[] = {
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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="1024x256"}, 0, 0, FLAGS },
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    { "s",    "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="1024x256"}, 0, 0, FLAGS },
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    { "colors", "set channels colors", OFFSET(colors), AV_OPT_TYPE_STRING, {.str = "red|green|blue|yellow|orange|lime|pink|magenta|brown" }, 0, 0, FLAGS },
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    { NULL }
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};
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AVFILTER_DEFINE_CLASS(abitscope);
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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;
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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_S16P, AV_SAMPLE_FMT_S32P, AV_SAMPLE_FMT_NONE };
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    static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_RGBA, AV_PIX_FMT_NONE };
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    int ret;
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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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        return ret;
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    layouts = ff_all_channel_counts();
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    if (!layouts)
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        return AVERROR(ENOMEM);
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    if ((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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    AudioBitScopeContext *s = ctx->priv;
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    int ch;
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    char *colors, *saveptr = NULL;
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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->nb_channels = inlink->channels;
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    s->depth = inlink->format == AV_SAMPLE_FMT_S16P ? 16 : 32;
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    s->fg = av_malloc_array(s->nb_channels, 4 * sizeof(*s->fg));
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    if (!s->fg)
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        return AVERROR(ENOMEM);
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    colors = av_strdup(s->colors);
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    if (!colors)
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        return AVERROR(ENOMEM);
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    for (ch = 0; ch < s->nb_channels; ch++) {
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        uint8_t fg[4] = { 0xff, 0xff, 0xff, 0xff };
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        char *color;
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        color = av_strtok(ch == 0 ? colors : NULL, " |", &saveptr);
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        if (color)
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            av_parse_color(fg, color, -1, ctx);
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        s->fg[4 * ch + 0] = fg[0];
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        s->fg[4 * ch + 1] = fg[1];
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        s->fg[4 * ch + 2] = fg[2];
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        s->fg[4 * ch + 3] = fg[3];
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    }
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    av_free(colors);
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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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    AudioBitScopeContext *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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    return 0;
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}
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static void count_bits(AudioBitScopeContext *s, uint32_t sample, int max)
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{
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    int i;
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    for (i = 0; i < max; i++) {
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        if (sample & (1U << i))
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            s->counter[i]++;
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    }
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *insamples)
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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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    AudioBitScopeContext *s = ctx->priv;
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    AVFrame *outpicref;
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    int ch, i, j, b;
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    outpicref = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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    if (!outpicref) {
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        av_frame_free(&insamples);
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        return AVERROR(ENOMEM);
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    }
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    for (i = 0; i < outlink->h; i++)
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        memset(outpicref->data[0] + i * outpicref->linesize[0], 0, outlink->w * 4);
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    outpicref->pts = insamples->pts;
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    outpicref->sample_aspect_ratio = (AVRational){1,1};
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    switch (insamples->format) {
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    case AV_SAMPLE_FMT_S16P:
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        for (ch = 0; ch < inlink->channels; ch++) {
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            uint16_t *in = (uint16_t *)insamples->extended_data[ch];
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            int w = outpicref->width / inlink->channels;
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            int h = outpicref->height / 16;
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            uint32_t color = AV_RN32(&s->fg[4 * ch]);
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            memset(s->counter, 0, sizeof(s->counter));
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            for (i = 0; i < insamples->nb_samples; i++)
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                count_bits(s, in[i], 16);
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            for (b = 0; b < 16; b++) {
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                for (j = 1; j < h - 1; j++) {
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                    uint8_t *dst = outpicref->data[0] + (b * h + j) * outpicref->linesize[0] + w * ch * 4;
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                    int ww = (s->counter[16 - b - 1] / (float)insamples->nb_samples) * (w - 1);
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                    for (i = 0; i < ww; i++) {
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                        AV_WN32(&dst[i * 4], color);
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                    }
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                }
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            }
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        }
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        break;
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    case AV_SAMPLE_FMT_S32P:
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        for (ch = 0; ch < inlink->channels; ch++) {
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            uint32_t *in = (uint32_t *)insamples->extended_data[ch];
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            int w = outpicref->width / inlink->channels;
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            int h = outpicref->height / 32;
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            uint32_t color = AV_RN32(&s->fg[4 * ch]);
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            memset(s->counter, 0, sizeof(s->counter));
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            for (i = 0; i < insamples->nb_samples; i++)
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                count_bits(s, in[i], 32);
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            for (b = 0; b < 32; b++) {
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                for (j = 1; j < h - 1; j++) {
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                    uint8_t *dst = outpicref->data[0] + (b * h + j) * outpicref->linesize[0] + w * ch * 4;
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                    int ww = (s->counter[32 - b - 1] / (float)insamples->nb_samples) * (w - 1);
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                    for (i = 0; i < ww; i++) {
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                        AV_WN32(&dst[i * 4], color);
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                    }
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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(&insamples);
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    return ff_filter_frame(outlink, outpicref);
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}
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static int activate(AVFilterContext *ctx)
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{
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    AVFilterLink *inlink = ctx->inputs[0];
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    AVFilterLink *outlink = ctx->outputs[0];
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    AudioBitScopeContext *s = ctx->priv;
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    AVFrame *in;
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    int ret;
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    FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
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    ret = ff_inlink_consume_samples(inlink, s->nb_samples, s->nb_samples, &in);
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    if (ret < 0)
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        return ret;
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    if (ret > 0)
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        return filter_frame(inlink, in);
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    FF_FILTER_FORWARD_STATUS(inlink, outlink);
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    FF_FILTER_FORWARD_WANTED(outlink, inlink);
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    return FFERROR_NOT_READY;
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}
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static const AVFilterPad inputs[] = {
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    {
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        .name         = "default",
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        .type         = AVMEDIA_TYPE_AUDIO,
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        .config_props = config_input,
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    },
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    { NULL }
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};
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static const AVFilterPad outputs[] = {
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    {
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        .name         = "default",
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        .type         = AVMEDIA_TYPE_VIDEO,
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        .config_props = config_output,
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    },
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    { NULL }
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};
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AVFilter ff_avf_abitscope = {
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    .name          = "abitscope",
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    .description   = NULL_IF_CONFIG_SMALL("Convert input audio to audio bit scope video output."),
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    .query_formats = query_formats,
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    .priv_size     = sizeof(AudioBitScopeContext),
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    .inputs        = inputs,
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    .outputs       = outputs,
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    .activate      = activate,
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    .priv_class    = &abitscope_class,
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};