double min, max;
double min_run, max_run;
double min_runs, max_runs;
+ double min_diff, max_diff;
+ double diff1_sum;
+ uint64_t mask;
uint64_t min_count, max_count;
uint64_t nb_samples;
} ChannelStats;
p->min = p->min_sigma_x2 = DBL_MAX;
p->max = p->max_sigma_x2 = DBL_MIN;
+ p->min_diff = p->max_diff = -1;
}
}
return 0;
}
+static unsigned bit_depth(uint64_t mask)
+{
+ unsigned result = 64;
+
+ for (; result && !(mask & 1); --result, mask >>= 1);
+
+ return result;
+}
+
static inline void update_stat(AudioStatsContext *s, ChannelStats *p, double d)
{
if (d < p->min) {
p->sigma_x += d;
p->sigma_x2 += d * d;
p->avg_sigma_x2 = p->avg_sigma_x2 * s->mult + (1.0 - s->mult) * d * d;
+ p->min_diff = FFMIN(p->min_diff == -1 ? DBL_MAX : p->min_diff, FFABS(d - (p->min_diff == -1 ? DBL_MAX : p->last)));
+ p->max_diff = FFMAX(p->max_diff, FFABS(d - (p->max_diff == -1 ? d : p->last)));
+ p->diff1_sum += FFABS(d - p->last);
p->last = d;
+ p->mask |= llrint(d * (1LLU<<63));
if (p->nb_samples >= s->tc_samples) {
p->max_sigma_x2 = FFMAX(p->max_sigma_x2, p->avg_sigma_x2);
static void set_metadata(AudioStatsContext *s, AVDictionary **metadata)
{
- uint64_t min_count = 0, max_count = 0, nb_samples = 0;
+ uint64_t mask = 0, min_count = 0, max_count = 0, nb_samples = 0;
double min_runs = 0, max_runs = 0,
- min = DBL_MAX, max = DBL_MIN,
+ min = DBL_MAX, max = DBL_MIN, min_diff = DBL_MAX, max_diff = 0,
max_sigma_x = 0,
+ diff1_sum = 0,
sigma_x = 0,
sigma_x2 = 0,
min_sigma_x2 = DBL_MAX,
min = FFMIN(min, p->min);
max = FFMAX(max, p->max);
+ min_diff = FFMIN(min_diff, p->min_diff);
+ max_diff = FFMAX(max_diff, p->max_diff);
+ diff1_sum += p->diff1_sum,
min_sigma_x2 = FFMIN(min_sigma_x2, p->min_sigma_x2);
max_sigma_x2 = FFMAX(max_sigma_x2, p->max_sigma_x2);
sigma_x += p->sigma_x;
max_count += p->max_count;
min_runs += p->min_runs;
max_runs += p->max_runs;
+ mask |= p->mask;
nb_samples += p->nb_samples;
if (fabs(p->sigma_x) > fabs(max_sigma_x))
max_sigma_x = p->sigma_x;
set_meta(metadata, c + 1, "DC_offset", "%f", p->sigma_x / p->nb_samples);
set_meta(metadata, c + 1, "Min_level", "%f", p->min);
set_meta(metadata, c + 1, "Max_level", "%f", p->max);
+ set_meta(metadata, c + 1, "Min_difference", "%f", p->min_diff);
+ set_meta(metadata, c + 1, "Max_difference", "%f", p->max_diff);
+ set_meta(metadata, c + 1, "Mean_difference", "%f", p->diff1_sum / (p->nb_samples - 1));
set_meta(metadata, c + 1, "Peak_level", "%f", LINEAR_TO_DB(FFMAX(-p->min, p->max)));
set_meta(metadata, c + 1, "RMS_level", "%f", LINEAR_TO_DB(sqrt(p->sigma_x2 / p->nb_samples)));
set_meta(metadata, c + 1, "RMS_peak", "%f", LINEAR_TO_DB(sqrt(p->max_sigma_x2)));
set_meta(metadata, c + 1, "Crest_factor", "%f", p->sigma_x2 ? FFMAX(-p->min, p->max) / sqrt(p->sigma_x2 / p->nb_samples) : 1);
set_meta(metadata, c + 1, "Flat_factor", "%f", LINEAR_TO_DB((p->min_runs + p->max_runs) / (p->min_count + p->max_count)));
set_meta(metadata, c + 1, "Peak_count", "%f", (float)(p->min_count + p->max_count));
+ set_meta(metadata, c + 1, "Bit_depth", "%f", bit_depth(p->mask));
}
set_meta(metadata, 0, "Overall.DC_offset", "%f", max_sigma_x / (nb_samples / s->nb_channels));
set_meta(metadata, 0, "Overall.Min_level", "%f", min);
set_meta(metadata, 0, "Overall.Max_level", "%f", max);
+ set_meta(metadata, 0, "Overall.Min_difference", "%f", min_diff);
+ set_meta(metadata, 0, "Overall.Max_difference", "%f", max_diff);
+ set_meta(metadata, 0, "Overall.Mean_difference", "%f", diff1_sum / (nb_samples - s->nb_channels));
set_meta(metadata, 0, "Overall.Peak_level", "%f", LINEAR_TO_DB(FFMAX(-min, max)));
set_meta(metadata, 0, "Overall.RMS_level", "%f", LINEAR_TO_DB(sqrt(sigma_x2 / nb_samples)));
set_meta(metadata, 0, "Overall.RMS_peak", "%f", LINEAR_TO_DB(sqrt(max_sigma_x2)));
set_meta(metadata, 0, "Overall.RMS_trough", "%f", LINEAR_TO_DB(sqrt(min_sigma_x2)));
set_meta(metadata, 0, "Overall.Flat_factor", "%f", LINEAR_TO_DB((min_runs + max_runs) / (min_count + max_count)));
set_meta(metadata, 0, "Overall.Peak_count", "%f", (float)(min_count + max_count) / (double)s->nb_channels);
+ set_meta(metadata, 0, "Overall.Bit_depth", "%f", bit_depth(mask));
set_meta(metadata, 0, "Overall.Number_of_samples", "%f", nb_samples / s->nb_channels);
}
static void print_stats(AVFilterContext *ctx)
{
AudioStatsContext *s = ctx->priv;
- uint64_t min_count = 0, max_count = 0, nb_samples = 0;
+ uint64_t mask = 0, min_count = 0, max_count = 0, nb_samples = 0;
double min_runs = 0, max_runs = 0,
- min = DBL_MAX, max = DBL_MIN,
+ min = DBL_MAX, max = DBL_MIN, min_diff = DBL_MAX, max_diff = 0,
max_sigma_x = 0,
+ diff1_sum = 0,
sigma_x = 0,
sigma_x2 = 0,
min_sigma_x2 = DBL_MAX,
min = FFMIN(min, p->min);
max = FFMAX(max, p->max);
+ min_diff = FFMIN(min_diff, p->min_diff);
+ max_diff = FFMAX(max_diff, p->max_diff);
+ diff1_sum += p->diff1_sum,
min_sigma_x2 = FFMIN(min_sigma_x2, p->min_sigma_x2);
max_sigma_x2 = FFMAX(max_sigma_x2, p->max_sigma_x2);
sigma_x += p->sigma_x;
max_count += p->max_count;
min_runs += p->min_runs;
max_runs += p->max_runs;
+ mask |= p->mask;
nb_samples += p->nb_samples;
if (fabs(p->sigma_x) > fabs(max_sigma_x))
max_sigma_x = p->sigma_x;
av_log(ctx, AV_LOG_INFO, "DC offset: %f\n", p->sigma_x / p->nb_samples);
av_log(ctx, AV_LOG_INFO, "Min level: %f\n", p->min);
av_log(ctx, AV_LOG_INFO, "Max level: %f\n", p->max);
+ av_log(ctx, AV_LOG_INFO, "Min difference: %f\n", p->min_diff);
+ av_log(ctx, AV_LOG_INFO, "Max difference: %f\n", p->max_diff);
+ av_log(ctx, AV_LOG_INFO, "Mean difference: %f\n", p->diff1_sum / (p->nb_samples - 1));
av_log(ctx, AV_LOG_INFO, "Peak level dB: %f\n", LINEAR_TO_DB(FFMAX(-p->min, p->max)));
av_log(ctx, AV_LOG_INFO, "RMS level dB: %f\n", LINEAR_TO_DB(sqrt(p->sigma_x2 / p->nb_samples)));
av_log(ctx, AV_LOG_INFO, "RMS peak dB: %f\n", LINEAR_TO_DB(sqrt(p->max_sigma_x2)));
av_log(ctx, AV_LOG_INFO, "Crest factor: %f\n", p->sigma_x2 ? FFMAX(-p->min, p->max) / sqrt(p->sigma_x2 / p->nb_samples) : 1);
av_log(ctx, AV_LOG_INFO, "Flat factor: %f\n", LINEAR_TO_DB((p->min_runs + p->max_runs) / (p->min_count + p->max_count)));
av_log(ctx, AV_LOG_INFO, "Peak count: %"PRId64"\n", p->min_count + p->max_count);
+ av_log(ctx, AV_LOG_INFO, "Bit depth: %u\n", bit_depth(p->mask));
}
av_log(ctx, AV_LOG_INFO, "Overall\n");
av_log(ctx, AV_LOG_INFO, "DC offset: %f\n", max_sigma_x / (nb_samples / s->nb_channels));
av_log(ctx, AV_LOG_INFO, "Min level: %f\n", min);
av_log(ctx, AV_LOG_INFO, "Max level: %f\n", max);
+ av_log(ctx, AV_LOG_INFO, "Min difference: %f\n", min_diff);
+ av_log(ctx, AV_LOG_INFO, "Max difference: %f\n", max_diff);
+ av_log(ctx, AV_LOG_INFO, "Mean difference: %f\n", diff1_sum / (nb_samples - s->nb_channels));
av_log(ctx, AV_LOG_INFO, "Peak level dB: %f\n", LINEAR_TO_DB(FFMAX(-min, max)));
av_log(ctx, AV_LOG_INFO, "RMS level dB: %f\n", LINEAR_TO_DB(sqrt(sigma_x2 / nb_samples)));
av_log(ctx, AV_LOG_INFO, "RMS peak dB: %f\n", LINEAR_TO_DB(sqrt(max_sigma_x2)));
av_log(ctx, AV_LOG_INFO, "RMS trough dB: %f\n", LINEAR_TO_DB(sqrt(min_sigma_x2)));
av_log(ctx, AV_LOG_INFO, "Flat factor: %f\n", LINEAR_TO_DB((min_runs + max_runs) / (min_count + max_count)));
av_log(ctx, AV_LOG_INFO, "Peak count: %f\n", (min_count + max_count) / (double)s->nb_channels);
+ av_log(ctx, AV_LOG_INFO, "Bit depth: %u\n", bit_depth(mask));
av_log(ctx, AV_LOG_INFO, "Number of samples: %"PRId64"\n", nb_samples / s->nb_channels);
}