mirror of https://git.videolan.org/git/ffmpeg.git
avfilter/af_astats: add RMS difference too
Signed-off-by: Paul B Mahol <onemda@gmail.com>
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9cd62b2ca4
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@ -1614,6 +1614,7 @@ Max_level
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Min_difference
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Max_difference
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Mean_difference
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RMS_difference
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Peak_level
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RMS_peak
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RMS_trough
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@ -1629,6 +1630,7 @@ Max_level
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Min_difference
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Max_difference
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Mean_difference
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RMS_difference
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Peak_level
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RMS_level
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RMS_peak
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@ -1670,6 +1672,9 @@ Maximal difference between two consecutive samples.
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Mean difference between two consecutive samples.
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The average of each difference between two consecutive samples.
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@item RMS difference
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Root Mean Square difference between two consecutive samples.
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@item Peak level dB
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@item RMS level dB
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Standard peak and RMS level measured in dBFS.
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@ -36,6 +36,7 @@ typedef struct ChannelStats {
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double min_runs, max_runs;
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double min_diff, max_diff;
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double diff1_sum;
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double diff1_sum_x2;
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uint64_t mask, imask;
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uint64_t min_count, max_count;
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uint64_t nb_samples;
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@ -121,6 +122,7 @@ static void reset_stats(AudioStatsContext *s)
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p->min_runs = 0;
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p->max_runs = 0;
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p->diff1_sum = 0;
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p->diff1_sum_x2 = 0;
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p->mask = 0;
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p->imask = 0xFFFFFFFFFFFFFFFF;
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p->min_count = 0;
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@ -197,6 +199,7 @@ static inline void update_stat(AudioStatsContext *s, ChannelStats *p, double d,
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p->min_diff = FFMIN(p->min_diff, fabs(d - p->last));
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p->max_diff = FFMAX(p->max_diff, fabs(d - p->last));
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p->diff1_sum += fabs(d - p->last);
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p->diff1_sum_x2 += (d - p->last) * (d - p->last);
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p->last = d;
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p->mask |= i;
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p->imask &= i;
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@ -232,6 +235,7 @@ static void set_metadata(AudioStatsContext *s, AVDictionary **metadata)
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nmin = DBL_MAX, nmax = DBL_MIN,
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max_sigma_x = 0,
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diff1_sum = 0,
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diff1_sum_x2 = 0,
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sigma_x = 0,
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sigma_x2 = 0,
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min_sigma_x2 = DBL_MAX,
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@ -251,7 +255,8 @@ static void set_metadata(AudioStatsContext *s, AVDictionary **metadata)
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nmax = FFMAX(nmax, p->nmax);
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min_diff = FFMIN(min_diff, p->min_diff);
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max_diff = FFMAX(max_diff, p->max_diff);
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diff1_sum += p->diff1_sum,
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diff1_sum += p->diff1_sum;
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diff1_sum_x2 += p->diff1_sum_x2;
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min_sigma_x2 = FFMIN(min_sigma_x2, p->min_sigma_x2);
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max_sigma_x2 = FFMAX(max_sigma_x2, p->max_sigma_x2);
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sigma_x += p->sigma_x;
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@ -272,6 +277,7 @@ static void set_metadata(AudioStatsContext *s, AVDictionary **metadata)
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set_meta(metadata, c + 1, "Min_difference", "%f", p->min_diff);
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set_meta(metadata, c + 1, "Max_difference", "%f", p->max_diff);
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set_meta(metadata, c + 1, "Mean_difference", "%f", p->diff1_sum / (p->nb_samples - 1));
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set_meta(metadata, c + 1, "RMS_difference", "%f", sqrt(p->diff1_sum_x2 / (p->nb_samples - 1)));
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set_meta(metadata, c + 1, "Peak_level", "%f", LINEAR_TO_DB(FFMAX(-p->nmin, p->nmax)));
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set_meta(metadata, c + 1, "RMS_level", "%f", LINEAR_TO_DB(sqrt(p->sigma_x2 / p->nb_samples)));
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set_meta(metadata, c + 1, "RMS_peak", "%f", LINEAR_TO_DB(sqrt(p->max_sigma_x2)));
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@ -290,6 +296,7 @@ static void set_metadata(AudioStatsContext *s, AVDictionary **metadata)
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set_meta(metadata, 0, "Overall.Min_difference", "%f", min_diff);
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set_meta(metadata, 0, "Overall.Max_difference", "%f", max_diff);
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set_meta(metadata, 0, "Overall.Mean_difference", "%f", diff1_sum / (nb_samples - s->nb_channels));
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set_meta(metadata, 0, "Overall.RMS_difference", "%f", sqrt(diff1_sum_x2 / (nb_samples - s->nb_channels)));
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set_meta(metadata, 0, "Overall.Peak_level", "%f", LINEAR_TO_DB(FFMAX(-nmin, nmax)));
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set_meta(metadata, 0, "Overall.RMS_level", "%f", LINEAR_TO_DB(sqrt(sigma_x2 / nb_samples)));
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set_meta(metadata, 0, "Overall.RMS_peak", "%f", LINEAR_TO_DB(sqrt(max_sigma_x2)));
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@ -419,6 +426,7 @@ static void print_stats(AVFilterContext *ctx)
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min = DBL_MAX, max = DBL_MIN, min_diff = DBL_MAX, max_diff = 0,
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nmin = DBL_MAX, nmax = DBL_MIN,
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max_sigma_x = 0,
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diff1_sum_x2 = 0,
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diff1_sum = 0,
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sigma_x = 0,
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sigma_x2 = 0,
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@ -439,7 +447,8 @@ static void print_stats(AVFilterContext *ctx)
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nmax = FFMAX(nmax, p->nmax);
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min_diff = FFMIN(min_diff, p->min_diff);
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max_diff = FFMAX(max_diff, p->max_diff);
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diff1_sum += p->diff1_sum,
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diff1_sum_x2 += p->diff1_sum_x2;
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diff1_sum += p->diff1_sum;
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min_sigma_x2 = FFMIN(min_sigma_x2, p->min_sigma_x2);
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max_sigma_x2 = FFMAX(max_sigma_x2, p->max_sigma_x2);
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sigma_x += p->sigma_x;
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@ -461,6 +470,7 @@ static void print_stats(AVFilterContext *ctx)
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av_log(ctx, AV_LOG_INFO, "Min difference: %f\n", p->min_diff);
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av_log(ctx, AV_LOG_INFO, "Max difference: %f\n", p->max_diff);
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av_log(ctx, AV_LOG_INFO, "Mean difference: %f\n", p->diff1_sum / (p->nb_samples - 1));
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av_log(ctx, AV_LOG_INFO, "RMS difference: %f\n", sqrt(p->diff1_sum_x2 / (p->nb_samples - 1)));
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av_log(ctx, AV_LOG_INFO, "Peak level dB: %f\n", LINEAR_TO_DB(FFMAX(-p->nmin, p->nmax)));
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av_log(ctx, AV_LOG_INFO, "RMS level dB: %f\n", LINEAR_TO_DB(sqrt(p->sigma_x2 / p->nb_samples)));
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av_log(ctx, AV_LOG_INFO, "RMS peak dB: %f\n", LINEAR_TO_DB(sqrt(p->max_sigma_x2)));
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@ -480,6 +490,7 @@ static void print_stats(AVFilterContext *ctx)
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av_log(ctx, AV_LOG_INFO, "Min difference: %f\n", min_diff);
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av_log(ctx, AV_LOG_INFO, "Max difference: %f\n", max_diff);
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av_log(ctx, AV_LOG_INFO, "Mean difference: %f\n", diff1_sum / (nb_samples - s->nb_channels));
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av_log(ctx, AV_LOG_INFO, "RMS difference: %f\n", sqrt(diff1_sum_x2 / (nb_samples - s->nb_channels)));
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av_log(ctx, AV_LOG_INFO, "Peak level dB: %f\n", LINEAR_TO_DB(FFMAX(-nmin, nmax)));
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av_log(ctx, AV_LOG_INFO, "RMS level dB: %f\n", LINEAR_TO_DB(sqrt(sigma_x2 / nb_samples)));
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av_log(ctx, AV_LOG_INFO, "RMS peak dB: %f\n", LINEAR_TO_DB(sqrt(max_sigma_x2)));
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